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South Poway Planned Community Development Plan - Volume 3 Final EIR July 1985SOOTH POWAY PLANNED COMMUNITY DEVELOPMENT PLAN POWAY. CAlIFORNIA VOlUME 3-FINAl ENVIRONMENTAL IMPACT REPORT SCH 184053008 Pr e pa red by: PHILLIPS BRANDT REDDICk 18012 Sky Park C ;r c l e Irvine, California 92714 Contact Person: Telephone Number: Tom Holm, Alep (714) 261-8820 Prepared for: THE CITY OF POWAY P.O. Box 785 Poway, Cal;forn;a 92064 Contact Person: John Bridge s Telephone Number: (619) 748-6600 July 1985 Section No. 1.0 2.0 3.0 4.0 TABLE OF C(J(fEffTS Title IffTROOOCTI� SUMMARY OF IMPACTS AND MITIGATION MEASURES PROJECT DESCRIPTION 3.1 Regfonal Setting 3.2 local Setting 3.3 3.4 3.5 3.6 3.7 3.8 locatfon (lomership Project C�nfty Plan CIljectives D1scretfona� Approvals General Pl a n and Zoning Status and Consistency Page No. 1-1 2-1 3-1 3-1 3-1 3-2 3-2 3-2 3-5 3-6 3-6 3.B.1 Current Zoning Status and Proposed 3-6 Des; gnat ions 3.8.2 General Plan Consistency 3.9 Current l�nd Use 3.10 Property Hfstory EXISTING ENVIRONMENTAL CONDITIONS, IMPACTS. o AND MITIGATION MEASURES 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10 4.11 4.12 landform and Topograp� Geol ogy, Soils and Mineral Resources Hydro logy and Water Quality Biologica l Res ources Cul tu ra l Resou rces Land Use Socioeconomfcs Fiscal Analysis Trafffc and C�rculation Ai r Resou rces Acoustic Environment Public Services and Uti lit i es 4.12.1 Fire Protection 4.12.2 Police Service 4.12.3 Public Utilities 4.12.4 S ol i d Waste ; 3-6 3-10 3-10 4-1 4-1 4-4 4-1B 4-28 4-39 04-46 4-51 4-56 4-58 4-74 4-83 4 -9 1 4-91 4-9 4 4-96 4-98 Exhibit No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17-21 22-26 27 28 29 29a 30-32 33 34 35 36 37 LIST OF EXHIBITS Tftle Regional Location Project Vic;n1ty Map Proj ect Location Ae ri a l Photograph Owners hi p Corrmuni ty Pl an General Plan Land Us e To pogra phy 51 ope Anal ys; s Critical El evations Geology Hydrology Biological Resources St atis tic al Ar e a s City of Poway Circulation Element San Diego County Circu lation Elem ent Horizon Year Traffic Forecasts Volum e to Capacity Ratios Noi se Anal ysi s Area and Link Numbers Public Facilities Comput er-Gen erated Viewshed Analysis Site Photo Index Site Photographs Cross-S ections Locations Cros s-S ections Isometric Views Conc eptual Land Use Plan, Alternative 1 - Low Intens ity Conc eptual Land Us e Plan, Alternative 3 - High Int ensity ; i ; Foll owing Pag!! 3-2 3-2 3-2 3-2 3-2 3-4 3-6 4-2 4-2 4-2 4-4 4-20 4-28 4-52 4-62 4-62 4-64 4-69 4-87 4-91 4-115 4-117 4-117 4-117 4-117 4-117 5-2 5-4 Table No. 1 2 3 4 5 6 7 8 9 10 1 1 12 13-17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 LIST (J" TABLES Tit le South Poway PC Land Use Summary Alternatives (1) and (3) Land Use Summary Soil Characteristics Existing Land Use Designations Regional Land Use Designations 1980-84 Growth Rates Regional Growth Forecast: MSA-l -North City Metropolitan San Diego Salary Survey Combined Operating Funds Costs and Revenues Intersec �ion Capacity Utilization Poway Master Planned Roadway Classifications Roadway Capacities Volume to Capacity Ratios Ambient Air Quality Standards Ambient Air Quality Summary SANDAG Se ries V Growth Forecasts Anticipated Stationary Source Emi ssions Estimated Mobile Source Emissions Total Esti mated Project-Generated Emissions Current Noise Levels Adjacent to Master Planned Roadway Li n k s Roadway Noise Levels Noise Levels Adjacent to Arterials Operating at Capacity Estimated Annual Energy Consumption by Proposed Project Solid Waste Generation Public Recreational Facilities City Park Standards Student Generation Wastewater Flow Projections Water Flow Projections Water Storage Projections Cumu lative Major Project Statistics 1v Page 3-3 3-4 4-8 4-46 4-48 4-52 4-53 4-54 4-57 4-59 4-61 4-61 4-65 to 4-69 4-76 4-77 4-78 4-79 4-80 4-80 4-84 4-87 4-88 4-97 4-101 4-102 4-103 4-104 4-108 4-112 4-11 3 8-3 \0 1.0 INTR(J)UCTI� This Environmental rmpact Report (E IR) has been prepar ed in accor danc e with the requir ements set forth in the Cal i forni a Env ironmental Quality Act, Section 21000 et seq. of the Publi c Resources Code. the revised 1984 CEQA Guidel ines, and the city of Poway Proce dures to Impl ement the California Environ men tal Quality Act. The city of Poway is the lead agen cy responsible for prepar ation of envi ronmental documentation pursuant to CEQA an d is responsible for approval or denial of the project be ing proposed. This EIR is an informational document designed to provide the reader with an objective and knowledgeable perspective for assessment of potential environmen tal effects associated with the proposed project an d possible future proje ct s requiring discretionary approval in the ar�a. T�e analy si s is pr esen ted in a co nci se and organ; zed format' to facil itate the read er's understanding. This report ana lyzes the impacts associated with the proposed development of a 2,500-acre area known as the South Poway Planned Communit y which incor pora tes resi de nt ial, commercial/office. indus trial/ business park,. and open space uses as well as the impl ementatio n of a key regional tr ansportation link, the South Poway Arterial. This document addresses specific topics of en vironmental con cern. For each environmental topic the curr ent setting is desc ribed, impacts and effects of sever al alternative development plans are identified, cumula-. tive effects are considered, and possible mitigation measures for minimi zing or eliminating nega ti ve impacts are recommended. In several sections, ba seline data is sU nJllarized from detailed technical reports and in corporated into the document for reading by the general pub lic. Th ese reports are as semb led into tec hnical appendices which follow the en vironmental impact report. Substantial baseline data for the project has been prepared by PRe Engi nee ring, project engineers for the Buehler Property Owners As soci ation, 1-1 2.0 SUMMARY OF IMPACTS AND MITIGATION MEASURES This section summarizes the conclusions of this envi ronmental anal ysis. 2-1 N I '" POTENTIAL MPACTS • Subst an t i al l and form a He rat ion from grading wil l occur in the ce nt ral highlands area� Canyon heads adjacent to de v el o pment sites will be fil led. Roadway construction will require sub stantial gr a d in g . • Specific area s (eg., c om p re ss i ble alluvium and Friars Forma tion) are subject to �dv ers e geologic conditions and may re quire corr ect i ve engineering mea sures. Development and e x i s t i ng small earth-fill dams may be sub j ect to groundshaki ng from ea rth- quake act i vi ty � SUMMARY OF IMPACTS MITIGATION MEASURES lANDFORM AM) TOPOGRAPHY • Gr adi n g ac tiviti es shall be in accordance wi th city of Poway Land Resou rce Conservation Ele me nt recommendations, P l a nn e d Corrmunity gui de 1 i ne s , and geo technical engi ne eri ng specifica tions ; grading plans shal l be included in the Devel opment Plan and tenta tive ma p and submitted f or review by the city of Poway. • The PC Devel o pment Pl an and 'text shall i nc l u d e detailed grading design guidelines incorporating contour gradi n9 and mi ni mum gra d; ng methods. GEOLOGY, SOilS, �ND MINERAl RESOURCES • The Deve l o p me n t Plan shall in clud e detailed grading stan dards. Detailed engineering. geol og ic . and soils in v estiga tions should be submitted with subarea plans or tent ati v e maps for review by the city of Poway� Subsequ ent studies shal l ad dress correct i ve engineer ing measures. LEVEL OF SIGNFICANCE AFTER MITIGATION . Mitigated to insignificant level. . Mi t ig a ted to i n S i g n ifica n t level . f. , N I W POTENTIAL IMPACTS Removal of vegetati ve cover from highly eros iv e soils will sub ject soils to 1ncreased erosion potent 1 a 1 u nt i 1 re-covered. Highly e xpa n siv e soil s wi 11 require engineering mitigations. • Project development without bene ficial use of t he underlying M�Z-2 aggre g at e resource wou l d re pr es ent a p ot e nt ially si gni fi cant direct and cumulative loss of this regional resource. • Flow patterns and channel 10ca- t ions and f eat u res wi 11 be modi fied. Si gnificant i ncr eases in stonmwater r un of f volumes and peak. f1 ows wi 11 OCCur wit h devel opment. E xis ti ng facilities will require improvements. • Creation of i mperv i o us surfaces wi 11 reduce the amount and al ter the location of groundwater recharge. • Su rfa c e water qua 1 i ty wi 11 be degraded at the proje c t site and downstream due to increased urban runoff poll ut a nts and increased sediments. SUMMARY OF IMPACTS MITIGATION MEASURES • Short-term and eros; on cont ro 1 be implemented. long-term soi 1 measures shall · A recla m ati o n plan for the exist ing and expanded ag gr e gat e mining operation shoul d be pre pared ; n ac c o rd a nce with the city surface mining ordlnance. HYDROLOGY AND WATER QUALITY • Specific dra i nag e and fl ood con t ro 1 des i 9ns in con f o rmance with city of Poway Water R eso u r ce Con ser vat i on and Flood Haz�rd Man agement policies shall be submit ted in conjunction with tenta tive mapS/Site plans. The pro ject sha 11 comply with local, state. an d federal water conser vation and flood hazard manage ment regulations and re c ommend a t i ons . Long-term eros ion and sediment control shall be prov id ed by pro- per placement of siltation basins. downdra ins, te rr a c e drains, slope revegetation and maintenance of r1parian areas; s tor mwater manag ement pl ans shall be developed to re d u c e water quality de g ra d ati o n from urban runoff. LEVEL OF SIGNFICANCE AFTER MITIGATION Mitigated to insignificant level. Sign if i ca nt adverse impacts. (partially mi t i Q ated with recommende d recovery option) . Mitigated to inSignificant level. Insignificant adverse impact. (groundwater) Mi t i g ated to insignificant level. {urban runOff } N • � POTENTIAL IMPACTS Approximately 50 percen t of the veget at ion ons i te wi 11 be re moved and the associated wild life wi 11 be r em oved or dis placed. Some sensitive habit ats and a numb er of sensiti ve botan ic species, including coast bar rel cactus, will be removed. Wildfire potential will increase at the open space/development boundary. • Si x archaeo1 ogi cal sites located in or near are as proposed for development or roadways could be 1 mpacted by grad1 ng or cons truc tion. Of Native Amerfcan con cern is a stand of Juncus whiCh may be impacted by the deve 1 op mente SUMMARY OF IMPACTS MmGATION MEASURES BIOLOGICAL RESOURCES The Development Pl an shall ' in clude standards and guidelines for prese rvation and management of open space and si goi fi can t riparian areas. In order to min imize biological impacts. design of an d standards for the site and fo r landscaping shall be approved by the city. • Extensive common open sp ace areas will be maintained by the Master P ro pe r t y Owners' Associa tion; open space acc ess control methods shall be developed and i m pl emen t ed to minimize habitat disruption. A spring biological should be conducted to the presence or absence ci fic sensitive species. CULTURAL RESOURCES survey confirm of sp e- • Site specific avoidance, or test ing and excavation meaSllres are recommended for pot entially im pactec1 sites; complianc e shall be demonstrated in conjunction with tentative map/site plan. or road improvement plan submit- tal s. Pri or to th e issuance of a grading permft. specific treat m ents for cu ltu ra 1 resoll rces LEVEL OF SIGNFICANCE AFTER MITIGATION . Mitigated to insignificant level. . Mitigated to insignificant level. POTENTIAL IMPACTS • The project will significantly alter the rural � open space char acter of the site with the con version of vacant land to resi dential, conmercial and fndus- N tria 1 1 and uses. Potent i a 1 for � land use conflicts is minimized with proposed pe ri meter RR-A, RR -C and open space uses. The project will significantly in crease the amount of employment generating land uses within the c; ty of Poway and along the 1-15 corri dor . • The project will generate an estimated 272 dwelling units with approximately 816 res i dents at buildout. Employment opportunities are estimated at 12,300 in dustrially related jobs and 9UO co mmerc i all y relat ed jobs. SUMMARY OF IMPACTS MITIGATION MEASURES identified during construction shall be pre p ared by a certified archaeologist and approved by the c i ty . Additional surveys for potential indirect impacts should be required with subse quent detailed plans. LAND USE • The project shall comply with cfty General Plan pol i cies. SfX:I �CllUJUCS • No mitigation measures are pro posed. LEVEL OF SIGNFICANCE AFTER MITIGATION . Mitigated to insignificant level. Significant overall positive imp act. N I 0'\ POTENTIAL IMPACTS • Th e project is estimated to gen erate up to 73.160 daily trips (includes 237 existing nearby reside ntial units ); of th es e daily trips, approximately 54,235 are es timated trip attrac tions. Various local road de sign capacities w i l l be exceeded either with or without the pr o posed proj ect. • Daily vol urnes on Poway Road will significantly exceed design capa city as a major arterial, both wi th or w1 thout South Poway Pl an ned Community. Reclassification to a primary arterial will re qui re a dd it i ona 1 ri ght -of -way acquis1tion and building dis placements. However, the over capac1ty conditions along Poway Road are min1m1zed under SANDAG Route 125 North location Analy sis Alternatives 8 and 12 with the potential connection of the South Poway Arter1 a 1 to the Mer cy Road 1 nterchange at Inter state 15. SUMMARY OF IMPACTS MrTlGA TION MEASURES TRAFFI C AND C I RC lilA TI (It • The basic cOllJ1'lunity design of the South Poway Pl anned COfTIIlun i ty, including trip-a ttractin g i ndust ri a 1 and conmerc i all off; ce uses, will help to reduce the i mba 1 ance of peak hou r flows cu r rently occurring in and out of the Poway community. • The existing city of Poway Circu la tion Element and other appro priate circulation elements sh ou 1 d be amended ta prav; de fo r the construction Of the Alterna t i ve 8 c; rcu 1 at i on system as pre sented in the Route 125 North location Analysis. • Despite right-of-way acquisition requir ements, consi deration should be given to reclassifying Poway Road as a primary arterial be tween Interstate 15 and Garden Road . The South Poway Arterial shoul d be cl ass Hi ed as a major arterial between Mercy Road and Pomerado Road, and as a primary arterial hetween Pomerado Road and the extension of Community Road, and as a major arterial be tween Community Road and Syca more Canyon Road. Ba sed on pro ject-level studi es , the segment between Pome rado Road and C OImJU n ity Roa d cou 1 d be red uced to a major art erial with de velopment of a secondary access to Pomer ado Road. LEVEL OF SIGNIFICANCE AFTER MITIGATION . Significant cumulative adverse impact. . Significant cumulative adverse impact. N I ....... POTENTIAL IMPACTS • Development of a secondary proj ect ac cess to Pomerado Road south of Metate Road coul d re sult in significant redu c tion s in traffic vo lumes both on the South Poway Arter; al bet ween Pom erado �oad and the Corrmuni ty Road extension. and on Pomerado Road itself along the segment be tween the proposed sec ondary acces s int ersection and the South Poway Arterial. • Bu;ldout of the project can be expec ted to gener ate demand for al ternative transportatio n mode facilities and ser vices. Bus turnouts. "par k-and-ri de" facili ties. and shelters at transfer points may be required onsite. SUMMARY OF IMPACTS MITIGATION MEASURES • Improvements to two critical in tersections. Poway Road/Pomerado Road and Poway Road/Community Road. should occur early in the development process, prior to development of Subareas 1 or 2. • Detailed traffic studies focus ing on local street locations and slzlng, and roadway access provisions shall be provided at sub sequent levels of planning • • Ons ite circulat ion improvement s shall be provi ded by the project in accor dance with South Pow ay Planned Communit y Development Plan standards; the project should contribute tow ard future off site improvements in propor tion with its ant icipated use of impacted facilit ies . • Alternative modes of transporta tion shall be encouraged through provision of bike lanes and pub lic tr ansit ac comftlOdations. Emp 1 oyers shou 1 d be encou raged to support "flextime!! or nontra ditional work scheduling. and ride-sharing in or der to lighten peak hour traffic volumes. • r n emp 1 oyment areas, ons He transit coordinators should be required to develop and imple ment carpool ing/vanpool ing pro grams; pr eferential parking spaces (IO%) should be provided. LEVEL OF StGNFlCANCE AFTER MITIGATION Mitigated to insignificant level . . Mi tigated to insignificant level. N I co POTENTIAL IMPACTS • Short-term fugitive dust and exhaust emissions wil l occur during construction and grading. lon g -t e rm stationary and mobile source emissions wi 11 occur both onsite and offsite. • Noise impacts associated with th e proj ec t 1nclude sh ort -term construction noise and long-term i n cre as es in a mbi e nt noise lev els, pr ima ri l y from increased v e h i cu lar t raffi c. Sens i t he no1s e receptors may be dev e lo p e d near existing noise sources. SUMMARY OF IMPACTS MfTIGATtoN MEASURES AIR RESUCES • The project s hall compl y wi t h a 11 ru l,es and regu 1 at ions of the SOAPeD. Dust control measures, vehicular emis sion s control mea sures, energy conservation prac tices. and various design mea sures shall be implemented. An an al ys is of m; croscale ai r quali ty sha ll be performed pursuant to p roj ect specif; c t raffi c studies. ACOUSTIC ENVIRONMENT • The project s h a l l comply with the ci ty noise ordinance. Buf fers, barriers, and attenuations shall be utflized to redu c e noise levels. Prior to the issu a n ce of building permits, an a cou s t i c authority shall perform a noise analysis and evidence of attenua t io n shall be su b m1 t ted for city approval. LEVEL OF SIGNIFICANCE AFTER MITIGATION Signigicant cumulative adverse impact on regional air quality (absent a revisi on to the Regional Air Quality Strategy). . Mitigated to insignificant level. N POTENTIAL IMPACTS • The p ropo s ed development will ge ne r ate significant l o ng -ter m demand for local servi ces. facil ities, and utilities. Included are fire, police , electricity, n atu ra l gas, t elephone , solid was te, water and wastewater, parks, schools, and hospitals. • • ID Short-term visu(ll impacts c l u de phased grading and struction acti viti es. 1n con- • long-term impacts incl ude sub stantial landform modification, loss of v e geta t i on , i nt rod uet 1 on of o rname ntal vegetation, i ntr o ductio n of urban development a nd roadways. landform a lte r a t i on associated w i th major collector and/or arterial road ac ce s s points will be v is ib le elements of the proj e ct ; the proj ect wi 11 also be visible from vant a ge points a l ong Pomerado Road, at g r ea te r distances from hills to the east, points on Scenic Htgh way 67, and from res i dences at higher elevations fn the no rth portion of Poway. SUMMARY OF IMPACTS MITIGATION MEASURES PUBLIC SERVICES AND UTILITIES • A number of miti ga tion measures are proposed inc lud in g conserva tion measures. adequate access, developer pr ovid ed infrastruc tu re and developer's fees. AESTHETICS Road improvement plans should en sure t ha t cut and fill slopes are c o ntou red and ali gned for minimum t opo gra ph i c disturbance. The Development Plan desi gn guid el ines shall specify arter ial buf fer widths, landscaping, and bui l ding setbacks in accord ance with the c it y 's Scenic High ways Element. • The north-and south-f aci ng slopes shall be retained in a n a tu r a l state fo r thei r vi sual qualit y and sc re e ni n g effect. At minimum, pr o j ect perimeter de sign shall incl ude contoured fill slopes, maximum use of na tive plant species, and ve get a tive screening of potentiall y vi s ible edges of the loop road and other perimeter r oad s . LEVEL OF SIGNFICANCE AFTER MITIGATION Significant cumulative adverse impact on regional water supplies (other services impacts mitigated to insignificant levels ). . Mitigated to insignificant level. . Mitigated to insignificant level. POTENTIAL IMPACTS • The proj ec t will incrementally contribute light so urces which affect the night sky. N I ...... C) SUMMARY OF IMPACTS MITIGATION MEASURES • Int ernal project desi gn stan- dards shall include landscaping th ro ugho ut the proj ect, under ground utilities, low-reflective b uil d in g materials. and arch ite c tural screening of m e cha nic al equiprnent. Architectural de sign, b u ild i ng materials, sign age, and e�terior lighting shall be subject to strict harmonious desi gn controls specified in development standards or subse quent deta i 1 ed pl ans . low pres- sure sodium lamps and lamp- Shields should be used when appropri ate to respect ni ght sky requi rernents of local observator ies • lEVEL OF SIGNFICANCE AFTER MITIGATION Mitigated to insignificant level. 3.0 PROJECT DESCRIPTION 3.1 REGIOOL SETIING The South Poway Planned Community is located in the city of Poway in the western coastal valley of San Diego County. The area lies approximately thi rteen mil es ; n 1 and f rom the Pacifi c Ocean between S tate Road 67 and Interstate 15. To t he east and south is Camp Elliott Naval R es e rva t ion . The project area is l oc a ted between the corrmunities of R an ch o Bernardo. Mira Mesa, Tierrasanta and Lakeside (Exhibit 1 ). Many c ity of Poway residents (55 percent of the re sident labor force) CQ ITllwte approximately fifteen miles southwest to San Diego em pl oy ment centers. Temperatu res in the reg; on are character; st i ca 11y moderate and the avera ge rai nfall in the area gives rise to the c oa st al sage that intermingles with chaparral on the foothill s and ste eper slopes in the region. 3 .. 2 LOCAL SETTING The city of Poway incorporated in De ce m ber 19HO as a predominantly residen tial corrmunity. Its approximately 23,600 acres are still predominately o pe n space (75 percent). but the city's population increased 240 percent from 1970 to 1980. Today, Poway is home to ab out 37,000 people (1970 and 1980 U.S. Census). The residents of Po way primarily live in single-fami ly, 1 arge-l at homes, a re young or middle-aged, white, and employed profes Sionally. The city of San Diego flanks Poway's southern and western bo rd er s with the exception of a 'small southwestern corner. The remai nder of the c i ty of Poway is bordered by San D i e go County (Exhibit 2). The 2.500-acre prop osed project s i t e extends in an east-west di re cti on along the southern portion of the ci ty. The pri mary topographi c feat u res of the project area are a s er i es of steep, rocky rid g es covered with mostly southern coastal sage scrub and some chaparral and grassland. It ;s dotted with a few homes which lend a rural. ranch character to the area. The ea s t -we s t tr ending ridges bisect Poway Creek's and Beeler Creek's drainage basins. with the northe rn portion of the property drain i ng into Poway Creek and th e southern po rt io n dra ining into Beeler Creek. Sco res of dry canyo ns with finger-like p ro j e c ti on s dissect the area; a few stoc k watering ponds ar e located on these hillsides. Elevations range from a ppro x i mately 1 �047 fe et mean sea 1 evel (MSL) near the east end of the site to approximately 453 f e e t MSL adjacent to the west end of the site. 3.3 LOCATION The proj ect area is si tuated 1 n the southern portion of the city of Poway. Beeler Creek an d Beeler C a ny on Road form the so ut h e rn border of the proper ty. The ea st e rn and western borders are defi ned by Sycamore Canyon Road and P ome ra do Road. respectively. To the nort h . Metate Lane and existing development along Poway Road form th e project boundary. Exhibit 3 illus trates the location of the proposed South Poway Pl anned COl11ilunity. Exhi bit 4 g ives an a e ria l view of the project si t e . 3.4 OWNERSHIP The South Poway Pl anned Commun Hy prape rty is owned by 43 i ndi v i dua 1 s and corporations co llec tivel y known as the Buehler Property Owners Associa t i o n . Of ·these 43 owne rs , e1 even possess ap pro ximatel y 78 p erc en t of the to tal acreage. The largest single-ownership par c e l is 661 acres. Most parcels are consid erably sma ller and there are s e vera l ownerships of less than three acres. Exhi bi t 5 ill ustrates o w n e rs h i p boundar; es wi thi n t he proposed project ar ea and 1 i sts t h e property owners wi thi n t h e pr opos e d project boundaries. 3.5 PROJECT COMMUNITY PLAN The proposed pr oject co nsists of the dev el opm ent of an app rox im ate ly 2.500-acre pl ann ed cOITJRun1 ty whi ch incorporates a variety of 1 and uses into an org an iz ed , comprehensive c ommun i ty . The pro je ct proposes a mix of light industrial and res i de nt i a l land uses with anc111ary COOJrIercial uses. Several roa dwa y s are proposed in conjunction with the project including construction of a reg i o n al ly plann ed highwa y (the So u th Poway Arterial) J 3 -2 Mira Mesa PenalQultoa Escondido Rancho Bernardo Poway Project Site Tlerrasante Regional Location m ;::;:� 2� SOUTH POWAY PLANNED COMMUNrrv w.."... , Ramona EXHIBIT 1 o Cltv of Poway ..lZZZJ City of San Diego 1M County of San Diego E � � .; � ?..: ..:; * South Poway Planned Community 1 Rancho Arbolltos 2 Penaaqulto8 East 3 Carmel "cLlntaln Ranch 4 Sabre Springe S Miramar Ranch North 6 Scripps Miramar Project Vicinity SOUTH POWAY PLANNED COMMUNITY EXHIBIT 2 • f1, Project Location SOUTH POWAY PLANNED COMMUNITY EXHIBIT 3 Aerial Photograph SOUTH POW A Y PLANNED COMMUNITY and a 100 P road wi th can n e ct 0 rs wh i c h encampas 5 and 1 ink the cent ra 11 y located industrial areas. O p en space for recreational u s es and buffering purposes is al so pl anned for the proj ect • Tabl e 1 li s t s the prop o s ed land uses for the pro j ect and E x h ib i t 6 illus tr at e s the community plan for the proposed project. Table 1 SOUTH POWAY PLANNED COMMUNITY LAND USE SUMMARY Land Use Commercial/Office Industri a 1 Park L1 g h t I nd u s t r; a 1 Total Industrial Rural Res idential A Rural Residential C Residential Single Family 2 Residential Mobile Homes Total Residential Open Space Remainingl PHASING Dwel li ng Units 46 91 85 50 272 Net Acres 28 149 495 644 571 211 97 8 887 481 +460 Phas; ng of the pr o po s ed project wi 11 sp an 15 to 20 years. However, a spe cific phasing p l an relative to subarea development or roadway construction is not currently available. 1 Remaining acreage is undesignated and will be us e d for any combination of open space, residential use, road rights-of-way or slope. 3-3 The p re lim i n a ry phas ing s c he du le w a s comp leted to eval uate the fi scal impacts of t he project . T h i s schedu le ou tl ine s steady increme n t al indu st ri al de velopme nt s p a n n i n g s eve nteen ye ars , comme rci al increment s exten ding o v e r sixteen years and re side nt ial de vel opment completed in t he fi rst twel ve years . ALTERNATI V ES For compa ris on pu rposes , two alte rnat i ves to t he proposed proj ect we re de vi sed and stud ied. Alterna ti ve (1) is a low i nt ensity devel opment com posed of p r i ma r ily re s ident ial land u s es at low den si ti es. Al ternat ive (1) req u i r e s mi ni mal road construction at the s i t e . Al ternat1 ve (2) repre sents t h e proposed proj ect as des cri bed in Tabl e 1. A l t e rn a ti v e (3) is a hi gh i n t e n s i ty plan ned commun ity d e ve l o p me n t compri sed of industri al . com me re i a 1 a n d res i d e n t 1 al l and uses and a comp lex ro adway network . Th; s alt e r n a t i v e proposes industri al and comme rci al acreage simi lar to the p r o posed alternat ive. Res i den ti al land use is grea ter in de nsi ty and nUnDe r of un its than the proposed alte rna ti ve. A statisti cal 5Urmla ry of land uses for the al ternati ves to the proposed proj ect is tabul ated be low. Table 2 ALTE RNA TI VES (1) AND (3) LAND US E SUMMAR Y Alternati ve (1) -Low Inte n si ty Land Use Rural Resi dent ial A R u r a l Resi dent ial C Tota l Resi dential Al ternati ve (3) -Hi gh Inte nsity Commercial /Off ice Industrial/Busines s P a r k 1 Ind ust ri al/Busi ness Park 2 Industri al/Bus iness Park 3 Tota l Industrial 3-4 Owe 11 i n 9 Un its 121 137 258 Net Ac res 2.020 265 2,285 37 147 255 277 6 7 9 .' i_·�':--" \ '.': --=- Community Plan. Proposed Alternative :� .. ,. . . _.-.... SOUTH POWAY PLANNED COMM UNITY .. .---"' ' . .. -,' ." .. '. �"'" LEGEND South Poway Commarclal Induatrlal Park Aural Aa.ld.nlla' A Aural " •• ICI.nClal C Slngl.-F ,mlly 2 (1-2 OU/Nat AQ.) --- '--- --- EXHIBIT 6 Ru r al Resi dential B Ru ra l Resi dent ial C Resi dential S ing l e Fami ly 2 Resi dential Singl e Fami ly 7 Res i denti al Mobi le H ome s Tota l Resi de nt ial Ta bl e 2 (cont 'd) 9 9 152 520 50 740 18 10 75 75 9 187 Exh; bi ts 36 a n d 37 ; 11 ust rate con c e p t u a l 1 and use pl ans for Al ternat i v es (1 ) and (3). 3.6 OBJ EC TI VES The g e ne ra l object ives of t he So uth Poway Pl anned C omm unity are the fo l lowi ng: 1. To uti lize the plan n e d commu n i t y app roa ch to c r e a te a co hesi ve mi xed -use commun ity. i n c l udi n g res i den ti al , ind ustr i a l, commerci al a n d open space uses ; 2. To creatp. a s t r o n g ba se of emp l oyment -genera ti ng land uses ; 3. To ma intain a rural and aesthet ic ch a r a ct er for the area; 4, To p r o v ide a safe and e f fici en t local ci rculation sy stem and to assi st in re gional arterial linkages ; 5, To prov ide pu blic services . f a c i l iti e s . and ame niti es wh ich are comm ens urate wi th the level of de velop m e n t proposed ; 6. To pu rsue an o rd e r l y long-range phas ing program (i e ., 20 years ) wh ich ref lects ma rketing real ities; 7. To impl ement the go a l s and obj ecti ves of the c i t y of Poway Comp re h ens i v e Pl an and Land Us e Pl an wh ile s e cur i n g vi ab le uses and econ om i c return for the property own ers . 3-5 3.7 DISCRETIONARY APPROVALS Oeve 1 opment of the South Poway Pl anned COl'llTlunHy req ui res su bmftta 1 by the proj e ct proponents of a Devel opme nt Plan and Text , pu rsuant to Planned Conrnu ni ty R e g u lat i ons . and subsequent ap p r o va l by t h e Poway Ci ty Co uncl 1. The D e ve l opme nt Plan wi ll establ ish and defi ne land uses, but non -develop ment areas w ill re tai n the city 's b as e zone des ignat ions . 3.8 GENERAL PLAN AND ZONI NG STATUS AND CONSISTENCY 3.8.1 Current Zoni ng Status and Proposed DeS ignations The ent i re proj ect Al lowable de v elopment Plan Text approved by area is c u r rently zoned Pl anned Commun ity (PC ). within a PC zone is es tab lished by a De ve l opment th e Poway City Counci l. The Deve lopment Plan Text wi ll est a b l i s h and defi ne spe ci fic u s e lists ; non -de vel opment areas wi ll re ta in the base zones of the city 's land Use Plan (Exhibit 7). Current ba se zones in the S o u th P o w ay P l a n n e d C omm uni ty are Resi denti al Rural -A (RR-A) wi th sm al l border sect i ons of RR -C. RR -C maxi mum dens i ty is one uni t per 1, 2, or 4 net acres ; RR -A ma ximum d e n s i t y is one u n it per 4, 8, 20 , or 40 n e t ac res .1 The proposed de ve lopme nt i nvo I ves construct; on of 28 acres of cO lfllle rc i a 1 / offi ce uses , 644 ac res of indust ri al /bus i ness pa rk uses , 887 a c r e s of residenti al u s es and 481 acres of open space (Exhi bit 6). The proposed de ve l opment is in fu ll comp l i a n c e wi th current zoni ng s t a t us . 3*8.2 General Plan Cons i stency The ci ty of Poway 's Land Use Pl a n serves as a sUlfIIlary of the Gene ra 1 Plan and embodies i ts ni ne mandatory el ements : land Us e. Ci rcu lation, Hous ing. Op en Space , Conservation, Noi se , S ce ni c Roadwa ys . Sa fety . a n d Sei smic Safety, as we ll as seven opt ional elements: Parks and Recreation, Pu bl ic- 1 Mi ni mum lot si zes are de termined by avera ge sl ope and cOiOOlun ity wa te r serv ice avai labi l ity. 3 -6 • Faci lities. Energy Conse rvation , Trai ls, Bikeways , Cu ltural /H istori c/ Arc haeo log i ca 1 Pres ervat ion, and Commun i ty Desi g n. (The numbers as si gned to the plan obj ect ives are fo r �l arity and are not incl uded in Poway 's Land Use Pl a n.) Land Use Pl an Objec ti ve 1 Incl uded in Poway 's Land Use Pl an is the Buehler Pl anned COlTlrlunity A re a (Sout h Po way Plan ned Commun ity). The obj ecti lie is to ensure that South Poway is pl anned to incorporate a va riety of uses su ch as res idential , comme rc ial /offi ce. industri al , publ ic and open space wi th strong emp has is upon emp loymen t-generat ing uses . Comp a tibil ity and ennancement of the proposed and exi st ing uses are encouraged . Intensi ve land uses , such as industri al or ma nu fact uring, sh oul d be centrally located in the project area . Proje ct Response The proposed proj ect wi ll comp ly fu lly with these go al s. The proposal incorporates 28 acres of cO/llT1ercial devel opment . 88 7 acres of res idential , and 644 acres of cent ra lly located indust r ial /busi ness pa rk de vel opment. Open space zo nes and/or r u ra l res i de nt ial areas bu ffer the surroundi ng existing land uses . It should be not ed , howe ve r, that va cant land adj a cent to the proj ect site has potential fo r devel opme nt wh ich is not desi g nated at th is ti me. However , th e proj ect l a n d uses ne ar the se areas are open sp ace and wi ll buffer the sur roun di ng areas . Land Use Plan Objecti ve 2 In ord e r to ma intain the aes thetics of the area , th e Land Use Pl an speci fi es that the northe rnmo st and southe rnmost ri dg el i nes and north sl opes Shou ld be prese rved . Grad ing shoul d be con fi ned to th e interi or of the area , to the extent fe as ible. whi le still al lowi ng for an eff ici ent ci rc u lation sy stem. Topographi c mo di f icat ions should be des i gned in ha rmony with the area 's g eneral form. The Poway Land Us e Pl an encou ra ges res iden tial uses in steeper areas wi th less th an 25 perce nt sl ope in orde r to pre- 3-7 serve the ru ra l and a e s t h e t i c cha racter of the area . The L a n d Use Plan suggests t h a t intensi ve uses be located in the interior of the p l a n ni n g area . PrOj ect Respon se Vi s u a l l y promi nent nort hern and sout hern sect ions of the proj e c t site are p r o p o s ed for open space and rural r e s ide n t i a l deve l opment at a mi nimum of one u n i t pe r ac re . Grad ing for and pl ac ement of i n t e n s i v e industri al /bu si nes s pa rk or c omme r c ial land uses wi ll be c o n fi n e d to the interi or of the site, al though gra d i n g fo r road connecti ons to the s urro u n d i n g ci rcu lation network is requi re d. Homes ites shou ld be graded at multi leve ls to har mo ni ze with hi llsides . Roadways wi ll be cent ra lly concentra ted . Within the c e n tra l portion of the s i t e , land uses wi ll not ma i n t a i n the area IS rural character . However, thes e uses wi ll be s c r e e n e d from a d jac e n t land uses by the inter ven ing to pography. Land Us e Pl an Obje c t i ve 3 Three areas wh ich need fu rthe r investi gat ion and co ns i derat ion are identi fied in the city's land Us e Plan. T h e s e are pres ervati on of key bi ol o gi c are as , the ' va lue t o the ci ty of e x i s t i ng aggregate re sourc es , and the sa fety and stabi lity of local ized areas of Friar 's f o r matio n . Fu rt her proj ect-s pec ific ge o l ogi c stud ies wi 11 be prep ared . Proj e c t R e s po n s e An An a lys i s of Aggrega te Re sources for the p r o j e ct area has been prep ared a dd r e s s i n g th ese r es o u r c e s with i n t h e site (Secti on 4.5), and fu rther b i o logi ca l studi es we re c on d u c t e d to ide nti fy key biol ogi c areas (Sect ion 4 .4). D e t a ile d geologic en gineeri ng studi es will be performed prior to Te ntat ive Map Si te Plan submi t tal . land Us e Pl an Objecti ve 4 The Poway Land Us e Plan speci fies tha t a ba ckbone ci rc ul a ti on sy stem wh ich emph asi zes an east-west re gi o nal a r t e r i a l and c o n n ect o r to p l a nned re gi o n- 3-8 a1 transport ati on ro ute s shoul d be de v e 1 o p e d . An aesthet ic de si gn should accomm odate re gi onal through-traffi c, inte rconnect ions wi th the exi st ing local sy stem, and access to uses on property abutti ng th is sy stem in the ci ty of Poway . P r oj e c t Respon se The proposed ci rcul at ion s yst e m consists of an east -we st arteri al whi ch traverses the c e nt e r of the South Poway Pl anned C omm u n i ty and e x t e n d s in each direct ion to p r ov ide local transportation s e r v i c e and to p r o vi de linK age wi th reg ional arteri als (eg., I nt e rst ate 1 5 and State H i ghw a y 67 ). Intercon nect ions to the e x i sti n g ci rc ul at ion sy stem are p r o v i d e d at Pome r ado Road, Metate Road , Commun ity Road , Midl and Road, and Sy camore Canyon �oad . Access to res idential uses north of the South P oway Planned Comm uni ty is e n ha n c e d by the p roposed ci rculation sys tem . The road al i gnments p r o v i d e proper setbacks from cre eksi de are as . Desi gns shou ld incl ude trees and vege tation. Land Use Pl an Objecti ve 5 The Land Use Plan st at es that speci fi c land use studies sh oul d establ ish on -and off-site pu bl ic faci lities and ser vice requ irement s. Phas ing and fi nanci al plans shall assu re de v elopment of these fa ci lities s u ch as streets , SCho ol s, fi re and p o l i c e prot ection, water. sewe r, storm drai ns , a n d parks . Devel opme nt of th e proj ect area is re qui red by th e P o w ay land Us e Plan to be in a cc o r d a nce wi th the Planned Comm un ity Zone . P r oj e c t R e spo n s e On-and o f f -s i t e service req ui rements are identi fied and des cribed in the EIR . A phas ing and fi nanci ng p l a n to as sure deve l opment of these faci l; t i e s wi 11 b e req ui red prior to p r o ject app ro v al s. The proposed project wi ll comp ly ful ly with the PC Zone regulati ons (refer to Sect i o n 3.7.1, Cu rre nt Z on i n g Status and Proposed Des i gnat ions ). 3-9 3 .9 CURRENT LAND USE The large majori ty of the South Poway site is cu rrent ly undevel oped and v a c a n t . The o p e n space 1 s u s e d pr; rna ri 1 y for graz; ng of 1; ve stock and f o r recreat iona l uses , incl ud ing hi king. ri ding, off-road vehi cle us e, and shooting. There a re scatte red homes located al ong the southwe ste rn and w e ste rn borde rs of the s i te adj acent to P ome ra do Road . Towa rd the cen ter of the s o u t h e rn proj ect si te bo undary, a smal l s a n d and gravel ready-mi x p lant is in operat ion. Su rroundi ng l a nd uses incl ude res ident ial de v elo pment to the no rt h an d w e s t at 0.25 to 8.0 dw el lings pe r a c r e . open space to the east and s o u t h, and a General Dy nam i cs mi s sile de v el opme nt site to the south of t h e proj ect site. 3 .10 PRlPERTY HIST(RY Poway was fi rst sett led in the l a t e 1700s by tile Spa nish mi ss iona ri es. Du r ing this peri od unti l the mi d 18805 , t h e area was grazed by mi ssi on and rancho c a t t 1 e. The fi rst wh ite s et t 1 ers entered t h e area in 1859 and for the centu ry to fo l low, farmed the land . The South Poway proj ect site has remai n ed pri mari ly o p en space for li v e stock gra zi n g . When t h e city of Poway incorporated in 1980, t he ensu ing Comp rehe nsi ve Plan (1983 ) deS i gnated the l a n d of the p ro j e c t site for Plan ned CO/TlTlun lty devel opmen t. Pr ior a p pro v a l s fo r the site al lowed con st ruction of sc a t t e re d res iden tial areas and a smal l a gg re g a t e proc es sing p lant (Padre Trans it ) wh ich r e c ei v e d a c o n d i t i o n a l use p e rmit to mi n e from 1975 to 1990 . There are no a d di t i o n a l ap proved envi ro nment al doc u ments p e r t a i n ing to th e proj ect site ot her than the city of Poway Gene ra l Plan Envi ronmental Imp act Rep ort. The C a l i f orni a Di vi s ion of M i n e s and G e o logy has ide nt i fi ed a large po r tion of t he si te to be a s i g n i fica nt s o urce of hi gh -qual i ty cons truct ion agg r egate . 3-10 4.0 EXISTING ENVIRONM£NTAl CON DITIONS, IMPACTS , AND MITIGATION MEAS URES 4.1 LANDF CRM AND T<P CliRAPHY 4.1.1 Exi sti ng Condi tions The proj ect si te and vici ni ty are ch aracteri zed by steep hi llsi des and canyons . Ridges a c r o s s the prope rty trend e a s t -w est and the re are many dry can yons wh i ch di sse c t the site . The p r o p e rty ap pears as a si gn 1fi cant land form fo rm i ng a sout herly ba ck d rop to the Poway cOlTJ11un ity . E lev a t ion s ra nge from 1,047 feet �an sea level (MSL ) near the eas t ern property bo un dary to 453 fe et MSL at the western end of t he site (E x h i b i t 8). The majori ty of the p r o p erty cons i sts of hi ll 51 des in excess of 25 p e rce nt s l ope (Exh ibit 9). A cont inuing aggregate mi ni ng operation has si gnifi cant ly mo di fi ed the top ography in the Beel er Creek. area by mi ni ng sand and gra v e l . The ci ty of Poway grading o r d i n a n c es reg ul ate grad ing wi t hin the ci ty, and prov ide re gulati ons for grad ing in hi llside are a s . 4.1 .2. Impacts Proje ct I mpa ct s . Pl anned communi ty de ve lopment wou l d invol ve su bstanti a 1 l a nd fo rm alterat ion and gra d i n g of the site's cent ral hi ghlands (pri m ari ly Mas ter Plan S u b a r e a s 1 and 2) to c re a t e pads fo r ind ust ri al and corrme r ci al - uses . Thi s is c o n s i d e re d a si gni ficant i m p ac t of the proposed proj ect . lnfi ll ing of ca n y on hea ds adj acent to de v elopment sites wo u l d be ne cessary to b a lan ce cut and fi ll a re a s on the site. Exhibit 10 i n d i c a t es the lim its of g r a d i n g for de v elopme nt areas . A dd i t i o n al gradi ng would al so be re qui red for cons truction of roadways through peri me ter open space and pro posed ru ra 1 res i dent i a 1 areas . Port ions of the South Poway Arter; a 1 exten sion, COlTmun ity Road and Midland R oa d ext ensi ons wi ll involve cut and fi ll to canyon sides app roaching 25 perc e n t sl ope . In pa r ticular, the proposed South Poway A rt e r i a l extens ion w es t e r l y across Beeler Canyon wi ll re s ult in si gnifi cant g r a d i n g to hi ll sides on bot h si des of the canyon . An addi ti ona l proj ect entry is also contemp lated from Pome rado Road t hro u g h an unnamed ca ny o n into Suba rea 1 s o ut h of Meta te Lane (see 4.9 TR AFFIC AND 4-1 CIR CULAT ION ). If implement ed . thi s link co uld al so re qu ire si gni fi cant gradi ng in planned open space depe ndi ng upon the al i gnment sel ected. Gradi ng fo r sing le fami ly dwe l ling s (SF-2. RR -A , RR-C and RM de si gnati ons ) is not co nsi de red si g ni ficant and wi ll affo rd greater opportunities to retai n landform cha ract eri sti cs . 1. La nd fo rm s wo uld be su bsta nti al ly al tered from gradi ng acti viti es to create usab le industri al and comme rci al /offi ce pads primarily in Ma ster Plan Suba reas 1 and 2. 2. Ma nu factured sl opes in excess of t hi rty feet in hei ght wi ll be re qui red at the de vel opment /open space interface . These sl opes are not anti cipated to be highly vi sible from offsi te areas at lower el eva ti ons • 3. Al i gnment of co llector and arter ial roadways through surroundi ng open space in areas of slope exceedi ng 25 pe rcent wi ll requi re add itional Si gn ifi cant grading. 4. From se l ected vant age po ints in Poway at hi gher el evati ons , p r oj ect landform alteration wi ll resu lt in pot enti al ly signif1cant visual effec ts . (These effect s are add re ssed in Sect ion 4.13 .2.) Cumu lative landform alterat ion effects of the proj ect in conj un c tion wi th exi sting and planned de vel o pment s are not co nsi dered si g ni fi cant . Proj ect Al ternati ves . Impact s to land f orms as soci ated wi th the hi gh intens ity Al ternat ive (3) wo ul d exceed those of the proposed proj ect wi th limi ted ex tensi ons of industri al de vel opment into open space or ru ra l resi dential areas in several subareas and increased densities at residential use areas . Conversion of RR -A or RR-C areas to SF -2 and SF-7 desi gnat ions wi ll necess ari ly result in increa sed gradi ng to ac commoda te sm a ller lot, p rod uct ion-type housi ng . The low intens ity Al ternati ve (1) su bstantial ly red uces 1 and fonn a 1 terat ion req ui re ments re lati ve to the proposed project. as it incl udes o nl y ru ral res identi al uses . Th is alternat ive may al so 4-2 4.2 GEQaiY. SOI LS AND MINERAL RES (uCES A prel iminary reconnai ssance for the p r o p o s ed project site was performed by Geocon , Inc . in Novembe r 1982 in orde r to iden ti fy geol og ic a n d soi l condi tions, and pot ent ial g eo l o g i c haza rds . In addi tion. an a n a l y s i s of a ggregate re sources at _ the site was p r ep a r e d by PRe Engi neeri ng, Inc . in Aug u s t 1984 . The pri n C i p a l fi ndi ngs of the se studies are sunmari zed in the fol lowi ng sect ions ; the ori gi na l Geo con repo rt is Op portu nities and Con stra ints Rep o r t ana 1 ys 1 S of aggregate res o u r c e s by PRe A p p e n di x C. 4.2.1 Exi st ing Condi tions Geology contai ned in PRe 's A p p e n d i x to the Buehler Pl an ning Area . and the Engineeri ng. Inc. can be fo und. in Fou r g e o logi c fo rmati ons and fi ve surfi cial ma t e r i a l ty pes we re obse r v ed at the prop osed proj ect si te . The geo 109; c f o r mat ions cons; st of three eocene sedimentary units : Friar 's F o r m a ti o n . Pomera do Congl omerate , and Stad ium Congl ome rate (composed of san d s t o n e and congl omerate lay ers ). The f o u rth geologic fo rmati on o n s i t e is cret aceous peri od granit ic roc ks of the southern Ca li forni a ba thol ith. The s u r f i c i al mat eri als o bs erv ed a r e tops oi 1 and q ua t e r n a r y 1 a n d s 11 des , wh i eh '111111 be a dd r e s s e d sep ara tely . and allu vium, slope was n, and debri s fl ows . Exhi bi t 1 1 ill ustrates the occ u r re nce of these ma teri al s. The geo logic b ed s are ne a r l y hori zont al on the site, dipp ing on l y about two to fi ve degrees to the west or southwest . Fri ar 's Format ion ge nera lly Occu rS bel ow a n ele vat i on of a bo ut 600 to 65U feet M e a n Sea Level (MSL ) whe re exp osed . Friar's F o rmat ion is chara cte r i st1 ca lly subject to vari OUS fo rms of ma ss wasta ge su c h as so1 1 creep and anci ent landslid es . Pomerado Congl omerate , a c obb l e d congl omerate , gene r al ly caps the ri d g e lin es at the site. Li thological ly or format ion al ly the Pome rado Conglome r ate is identical to the unde r l y i n g Stadium C on g l o me rate and di ffe rs p r i ma ri ly in age . 4-4 -' " , '.. " ...... � . " ..... Geology . ' ,.- ,,' ... " .. '.-" "", '.; ..:: , '- l·�::·J.'.·'::". .. �11.� ... �:�f.li· .. -.:� - -.• =: , ... SOUTH POW A Y PLANNED COMMUNITY --' ...... ,. .- ��:1".A:: "-",:'U+" •.. -- . -. -.• " :.' .......... . " , -. , " , , LEGEND Cal Cdt Alluvium Debris Flow Qls Landslide (Queried Wher Existence Uncertain) Tp Pomerado Conglomerate Tstss Stadium Conglomerate (Sandstone part) Tst Stadium Conglomerate Tf Frairs Formation Kgr Granitic Rock r--../ Geologic Contact / ..... --.-; Inferred Geologic Conta " ,,� Geologic Cross -Seelio � Earth Fill Dam 1=1 MRZ-2 n MRZ-3 m Existing Aggregate Lease A .oo.e __ _ ___ ._._0.-.... . -...-- EXHIBIT 11 Stadi um Congl omerate on the si t e co nsi sts of a c o n gl o me rat ic po r ti on whi ch contai ns an unusual ly thi cIc: be d of sand stone. The sandstone bed obse rved is genera lly at e7evat ions of 650 to 700 feet MS L. The co ngl omerat ic portion ts a light ly cemented cobb le cong l omerate. M i n o r debri s fl ows are COJTmon ons ite at the hea ds of canyons composed of t h e Stad1 urn Con gl om erate . Th is form at ion may prov ide good fi ll mate rial as both pa rts of the Stadi urn Congl omerate pos sess good s1 0pe s ta b i 1 ity c h a r a cte r i s ti c s 1 n bo t h cut and fi ll and manu factu red slopes . Nea r the east end of the site. gra ni ti c ro c k s are exposed and ge ol og; c tren ds indicate that gran i ti c rock may al so be present at shal low depths be low sed imentary un Hs . Deep cu t s in areas of granitic rock may requ ire bl ast ing. Al l u v i um, wh i ch is poorly con sol i d ated soi l depos ited by wa ter su ch as a st ream , is p r es ent in canyon bottoms and tends to vary proporti onal ly wi th c any o n si z e. Ten to fi fteen -foot dept hs are coronon in the large c any on s in the north-central area of the site. Wi t hin the Beel er Creek fl ood plain, similar depths of al luvi um are expec ted . Sma l ler canyons have al l uvi al dep o s i ts of about fi ve fe et in depth . Sl opewa sh d ep o s i ts cOlllTlon ly co n si s t of compre ssi b le soi ls and are co mp o s ed of cl ays , sands and gravel s. They are frequent ly obse rved at the base of canyon fl anks and areas adjacent to Friar's Fo rma ti ons . Sl opewas h mu st be removed and recomp acted in order to prov ide suppo rt of fi ll or stru ctu res . De bri s fl ows or flMJdfl ows occ ur ma inly in as soci at ion wi th Stad ium Con gl om era t e and probab ly occur due to a ny combi nati on of hi g h-i nt ens ity ra in fal l, loss of veget ati ve cover, and s t e e p sl ope . FAULTS AND SE ISMICITy1 Poway is rema rkab ly free from fau lts, though located in s o u the rn Ca 1 ifor nia reg i on wh ich experi ences re latively hi gh ea rthquake acti vity. Li t t1e 1 Ba s ed on Poway ComB rehens ive Pl an . 1 983 . 4-5 to n o dama ge has occurred from sei smic acti v ity. yet p o t en t i a l fo r some local damage ex; sts 1 n the event of ma jor e a r t h q uake al ong one of the three nea rby fau lt sy stems . The th ree fa u 1t sy s t e ms are the El sinore, San Jaci nto , and Ros e Canyon . The acti ve El si nore fa ult t r e n d s no rthw est and ;s about 22 mi les n o rt h eas t of Poway . The San J a c i n t o fa u lt is al so an a c ti v e northwest-t re nd ing fau lt about 45 mi l e s northeast of Poway . The Rose Canyon fault ;s located about 16 to 20 mi les w es t of Poway in the Pa ci fi c Ocean and is co nsi dered potential ly acti v e. Ground shaki ng is the m o s t si gni fi cant event anti ci pated i n P o w ay du e to local sei smi c a ct i vity . LIQUEFACT ION Liquefaction. wh ich ;s the loss of st rength unconsolidated sed iments . occu rs primari ly in sha 11 ow wat er t a b 1 es du ri ng g r o u n d shak i ng. 1 i qu efact ions oc cu rs when the ground tl f l ows II A reas poten tially susce pti ble to liq u ef act ion site. h ow eve r, it should be considered in engi neeri ng inves ti ga tion. LAND SL I DES in gra nu lar, saturated, or a r e a s of deep sedi ments and Potent ial for damage from and b u i l di n g s ti lt or sink. we re not observed on the a mo re detai led g e olog i C Lands lides are common in t h e Poway area and general ly oc cur as a re s u l t of g round shak ing in areas of unstabl e g eo l o g i c conditi o ns, su ch as the Friar's Fo rmat ion. On the proposed proj ect site, areas of sl i de-p rone Friar 's F o rmat ion are general ly at lowe r elevati ons , pa rticularly al on g the northern and we stern property b o u nd a ry (Exhi bi t 11). So1 1s1 The ma j ori ty of the sit e ;s ove rl ain by c l a y ey and cobbl y t o p s o i l s wi th th i c k n e sses est i ma ted at o ne to fi ve feet . The most coman soi l types w ithi n the sHe bo undari es are Reddi ng cobb 1 y loam w i t h 1 5-50 pe rcent sl opes an d Di abl o-Ol i venha in c o mp l e x with 9-30 percent slopes . 1 USDA Soi l Conse rvati on Se rvice , Soi l Survey of San Di ego Area , C a l ifo rn i a, Dec ember 1973. 4 -6 Tabl e 3 1 i st s the soi 1 s fo und on site ill order of de creasi ng a bundance and des cri bes soil ch aracteri stics. Rough ly 90 pe rcent or more of the area is covere d by ei ther Redd ing co bb ly loam (R fF ) or Oiablo-Olivenha1 n comp lex (DoE ). These s oi ls are found pri mari ly on st eep sl opes . The maj ori ty of the soi ls exhi bit a high s hri nk -swel l or expansi ve pote n tial wh ich tends to crack stru ctu res unless compe nsated for th is cha r a c t er isti c. Mos t soi ls also have a h1 gh erosi ve poten tial due to roc ky tex turesJ st eep slopes or both . Agri cultural capabi l ity cl assi fi ca ti ons ra nge from Class II (mode rate limi tati ons restricting some agricultural uses ) to Cl ass VIII (soi ls and land forms prec l ude use fo r producti o n o f comercial cro ps bu t al low use for re creation al , wi ldl ife, and aesthet ic pu rposes ). Most soi l areas are d es i gnated Cl as s VII (gener al ly unsu ited fo r cu lti vati on ). Anot her agri cul tural use indi cator is the Storie Index wh i ch ran ges from gra de s 1 to 100 , whe re l e s s than 10 is uns uited to fa rmi ng pu rposes and 80. to 1 00 is sui table for most cro ps . Soils on the si te predomi nantly ea rn a Stori e Index of 10 with some areas r an g i ng in the 2Us and 40 5 indica ting se vere to mode rate limitati ons for crop produ ct ion but sui tabi l ity for pasture or range . Due to the hi gh dema nd for constructi on grade ma teri al s in the San Di ego area and due also to the requi re ment to ba lance cut and fi ll areas onsite. Soi ls con si dered su itab le sou rce s of gra v el , sand or dec ompo sed gra ni te are listed in Tabl e 3. Soi ls are also ra ted by the Soil Conservation Servi ce S o i l Survey for use as tops oi ls or roa dfi ll . Redding an d Visal ia soi ls are consi de red fa ir to poor roa d fi ll and D iablo-01i ve nhain complex soi ls are determi ned to be po or source s of bot h roa dfi ll and tops oi l. Mi nera l Resou rces ! T he Cal iforni a Depa rt ment of Conse rvati on and State Mi ning and Geo l ogy Board ha s des; gn ated Reg i onal ly 5i g n; fi cant Construct; on Aggre gate 1 A n a l ys is of Aggrega te Resources Buehl er Planning Area, Poway, Cal ifor nia, PRe E n g i n e eri n g , Inc. 4-7 Ta ble 3 SOI L CHARAC TER ISTI CS 1 Ca pabi 1 ity Shri nle -Swe 11 Cl ass ifi cat ion / So; 1 T��e Sl oQe s Po tent ial St ori e Inde x RfF-Redd ing Cobb ly Loam 1 5-50 % Hi gh VIIe-7/1O DoE -Di abl o Ol i venha1n Compl ex 9-30% Hi gh D iabl o IVe-5/23 01 i venh ai n Vle-7/23 VbB -Visal ia Gravel ly Sandy 2-5% Low IIe-l /49 Loam VbC-Vi sal ia Gra v el ly Sandy 5-9% Low IIe-1/44 Loam Rrn-R i ve rwa sl1 Low VII Iw-4/40 OaF-Di abl o Cl ay 30-50% High VIe-S/13 Da E-Di abl o Clay 15-30% Hi gh IVe-5/30 DaC -Oi abl o Cl ay 2 -9% Hi gh IIe-5/42 SbC-Sal inas Cl ay Loam 2-9% Mo de r ate IIe-1/73 RdC-Redd ing Gravel ly Loam 2-9% Hi gh VI e-3/19 CnE 2-Ci eneba-Fa llbrook Rocky Sandy Loarns (E roded) 9-30% Low Ci en eba Vle-7/18 Fal l brook VIe-71l8 Rock Ou tcrop VII Is-l/na 1 USDA S oi l Conservati on Ser vice, Soi l Sur vey, Decembe r 1973 . 4-8 Sui tabi 1 fty as Const ructi on Ma ter; a 1 SourcE G ra ve 1 Gra ve 1 Decomposed Granite Resource Areas in the Western San Di ego County Producti o n-Con sumpt ion Reg ion (M arch 198 4). Currently. a deficit ;s p r o j e c ted for agg regate re sources; howeve r. a su b stantial amo unt of th i s re sou rce re mai ns avai l able for mi ning to me et the re gi onwide proje cted de mand. The West ern San Diego Produc ti o n-Consump tion Region is rep o rted to cont ai n app roxi mately 43 0 m i l l i o n tons of aggregate res e'rves wh ich ha ve use permi ts al lowing mi n i n g operat ions. In the next 50 yea rs . 760 mi llion ton s of aggreg ate is proj ected to be n eed ed by the cons tru ct ion industry, wh ich leave s a 3 30 mi llion ton defi cit . Hi gher qu ality agg re gate compri ses nea rly ha lf of the ent ire aggregate demand . The great maj ori ty of the proposed proj ect site is des ignated Mi nera l Resou rce Zone-2 (MRZ-2) by the state (Exhi bi t 11 ). An MRZ -2 ; s defi ned as "an area where adequ ate informa ti on indi c ates that Si g nifi c ant mi nera l depos its are pres ent or wh ere it i s judged that there is hi gh likel ihood fo r t h e i r presence . Thi s zone (MRZ-2) shal l be appl ied to known mi ne ra l dep o sits or wh ere wel l -d evel oped lines of re ason ing, ba sed upon economic ge ol ogi c pri nci pa ls and adequate data . demons trate tha t the likel i hood fo r occurren ce of s igni f icant mi neral depos its is hi gh ." The re mai nder of the s i t e is d e si gnated MRZ -3 wh icl1 indi cates "a reas co nt ai ning mi nera l de pos its, t h e si gn ifi cance of wh ich ca nnot be eval uated from available data ." The South Poway pl anning area is underl ain by l a r g e amounts of co ngl om erate composed of aggregate mate rial s. Tota l aggregate reso urces , both permi tted fo r ext ract ion and unpermi tted . are es ti mated at 317 million tons w ith i n the s i te . Padre Trans it is a small perm itt ed aggregate mi ni ng and processing o per a ti on located adj acent to Beeler Creek in the south -cent ral porti on of the prop erty . T h e pe rmi tted area of 82 a c r e s is es ti ma ted to cont a; n 21 -35 mi llion tons of high qual ity aggregate wi thin about a one-mi le radi us of the pl ant . 4.2.2 hlpacts Proje ct Impacts . The proposed proj ect ;s not found to have a n y unmanage ab le ge ol ogi c or soils con strai nts . Construction and devel opment is con side red geotechni cal ly fe asi bl e. howe v er . furt her si te speci f ic g e o logi c a l 4-9 en gi n e e r i n g stu dies are re qui red by the ci ty of Poway. F u tu re de s ign level inves ti ga tions s h o u l d add r ess potent ial site-s peci fi c g e ol o g i c con st r a ints and t h e i r impl icat ions . Geology G r a d i n g for the proposed proj e ct is conc ent rated wi th i n · the ce ntral po r ti on of the site w h e r e the most intense use of t h e land w i l l be made . Exhi bit 11 ill ust rates that t h e area p r o p o s e d for industri a 1 a n d conme r ci al uses is g e nera l l y und erlain by the st abl e S t a d i um C o n g l ome ra t e or Pom erado Congl omerat e. However , s o m e industrial and especi ally some res iden tial u ses and roadways are p r o p o s ed in areas of F r i a r 's Format ion. Al lu v i a l deposits pro j e c t into a l m o s t al l areas of the s i t e and frequent ly u n d e r l y proposed roadways . less si gnificant g r a d i ng for r u ra l re sident ial homesi tes is p r o p o s e d in a r ea s supported mainly by t h e two co ngl omera te form a t ion s and the grani t ic unit. Areas subject to adverse g e o l o g i c con diti ons pot e n t i a l l y req ui ring correcti ve me a su r e s are discussed be low. 1. Comp re ssi bl e al luvi um and s l o pew a s h de pths are ant ic1 pated to be fi ve t o ten feet d ee p . These are fo und primari ly al ong canyon al i gnments and wi ll re qu ire at least pa r tial remov a l and re c o m p a ct i o n prior to pl a c e me n t of fi ll in canyons . 2. Cut and fi ll slopes constructed of Friar 's F o r ma t ion mate ri als may n ot po ssess a ht gh safety factor aga i nst sliding. B u t t r es s es may be requ ired for cut slopes and stabi lity fi l l s may be re qu ired fo r fi ll sl opes comp osed of Friar's F o r ma t i on materi al s. Mate ri als obtai ned f ro m the o v e r l y i ng con gl ome rates may prov ide these st r on g bu ttres ses and stabi l i ty fi l l s. S 1 i d e de bri s often c o n t a i ns zones of camp r es sible ma teri al s wh ich req ui re re compact ion to re duce th e ch ance o f di fferent ial settl eme nt. 3. Groundwate r s e e p s are common ly e n c o u nte re d in cu t sl opes d uring gra ding ope rati o ns . If such seeps a r e encou nt ered, mi ti gati ve me asu res 4-10 such as int ercept drai nage sy s tems may be re q u ired at that ti me. Seeps are anti cipated at the cont act of the Stadi um Congl omerate and F r iar 's Fo rma tion. 4. Groundwater is al so antici pated at shal low d e p t h s wi thi n al l uvi al d e p o s i t s in large r canyons . When thi s conditi on exi sts in areas re cei vi ng f i l l . �anyon subdrains wi ll be requi red . 5. G r a n i t i c ro ck may re qui re heavy ri pp ing or 'b last ing in deep cut areas . (Ri ppabi lity cha racteri stics may be det ermi ned by sei smic r e f r a c t i on surveys .) FAULTS AND SE ISMICITY Bec ause the re are no known fa ults in the area . the site ;s not exp ected to be s u b j ec t to di rect su rface rupture or fa ulting. Deve l opment wi ll. how ever, be subject to ha zards due to g r o u n d shak i n g from ea rt hquak e act i vi ty . One area i d e n ti f i ed fo r fu rthe r s tudy is the stabi lity of seve ral exi sting smal l ea rth-fi lled dams ons ite. They shou ld be e v a lua t e d as thei r cond ition is cu rrent ly unk nown . Dam fai lure due to g ro u n d shak ing could resul t in dama ge to down stream p rope r ty or endange r p e rson s in areas subj ect to inundat ion. LIQUEFACT ION Invest iga tion of soil, groundwater and se i s mi c condi ti ons ons ite i n d ica t e s that liqu efact ion wi 1l not si gni ficant ly impact p r o p o sed de velop ment . Sma 11 . deep pock et s of unconsol ; da ted al l uvi urn with shal l ow gr oundwater may be e n c o u n t e red . However, th ese areas are e x p e ct ed to be ame nabl e to compact ion and wi 11 not p o s e a c o nstra i n t to de vel opme nt . L A ND S L I D ES Lands lid es are f oun d to be p re va l e n t in portions of the site. pa r ticularly those areas of Fri ar 's Formati o n. Some fact ors wh ich cont ri bute to ground mo vement on uns t a b l e sl opes are the f o l l o w i n g: 4-11 slopes greater than 30 p e r c e n t on l a n d s l i de prone areas ; undercut sl ope bases due to e r o s i o n or g radin g ; slopes overl oaded wi th wei gh t; satu rated u n s t a b le slopes due t o pro lon g e d rai nfal l. over-i rri ga tion, leaky swi mmi ng pool s or pi pes , leach line di scharge . W here d e vel o p me nt is pla n n ed . in land sl i de-prone a r e as , re m ed i a l g r a d ing me asu res wi ll be ne c e s sa ry . Ty pi c al ly, t h e measu res i n c l u de const ructi on of ea rt hfi ll butt res ses wi th associ ated subsu rface dra ina g e sys tems . Ot her techni ques w h ich may re d u c e sl ide h a za rd incl ude remov ing, re d i s tri buting. c o m p a c t i n g . or othe rwi se stabi lizing earth mas ses p r o n e to mov e me nt , and pract iCing ca refu l land scapi ng and i r r iga t i o n tech ni ques . Soil s Removal of v ege t a t i v e cove r from hi g hly eros ive soi ls wi ll su bject them to s urf a ce eros ion from w ind and w a t e r . These impacts wi 11 be associ ated w i t h the s h o rt -t e r m const ruct ion phase as re vege tati on wi ll b e accom pl i shed fol lowi ng g r a d i n g and const ruction. La rge a r e as of ru ral r e s i d e n tial and open space uses wi ll ret ai n the na tu r al cover of ve get at ion. Moderate ly to hi ghly e xpans i v e t o p s o ils wi ll be en co u n t e red over rruch of the site 's ground su rface . The pre sen c e of the soi ls may neces sitate underc utti ng of dayl ight lines in cut/fi ll transition lots , possib le und e rc u tt i n g of cut lots wh e r e t o p s o ils are e x p o s e d ove r a large r p o r t i on of the f i n i S h e d lot s u r f a c e � excavation of re lati vely deep keys in a r e a s where f i l l is to be p l a c e d , and placement of tops oi ls in de epe r fi lls whe re p o s s i b l e . Expa n s ive soils may a l s o be en c ount e re d wi thi n t h e Friar's Format ion and landslide ma t e r i als . Handling o f these mat e ri al s ;s simi lar to that of topsoi ls, discus sed above. Si nce Friar's Fo rmat ion and landslide materi al s are g e n e r a l l y located at lower el e v a t i on s , site grading s ho u l d be pl a n n e d su ch th at t h e 1 ess expans i ve co ngl omerat es are pl aced over these exp ans ive mat erial s when fe as ible. Th is wo uld el imi nate the need for speCial ly de s igned foundati ons . 4-12 Due to the ext reme ly l i m i t ed extent of pri me agricultural s o i l ans ite, impacts to a g r i cu l t u ra l soi ls are not co nside red si gn i fi cant . Use of p r o p o s e d de vel o pment areas for grazing is lim ited to some extent by steep sl opes , narrow r i d ge l ine s and coastal sage scrub v e g eta t i on . Potent ial usabl e ran gel and for grazi ng of 11 v e s t o c k wi 11 be retained in op en space and rural r e s i d e n t i a l a r e as. Mi neral Resou rces The PRe E n g ; nee ri n9 invest i gat; ons of aggre gate rec overy addres sed fo u r altern at i ves ) The fi rst al te r n a ti ve wa s a no-p roj ect s ituation where al l ex i st i ng site condi ti ons wou ld rema in unchanged. The exi st ing m i ning o pe r at i on wou ld cont inue unti l its p ermi tt ed aggre gate reserves we re ex hausted or the p ermi t expi re d. ti es wo uld be avoi ded . Impacts a ssoc i ated wi th lar ger scal e mi ni ng a c t i vi How ever, th e present aggreg ate supp ly de f1 ci t in the San D i ego produ ct ion consumpti on reg i o n wou ld not be reduced . The second al ternat i ve proposed that tl'te 2 ,50 0 -ac r e site be used excl lJ si vel y for mi ning opera tions. This alterna ti ve is cons i d ered a ba sic alternati ve to the. proposed South P o w ay Pl anned Comm unity wh ich wou ld re su lt in the si g nifi cant re duct ion of the re gi onw ide 50-yea r supply d efi c i t ; howeve r, en vi ronmenta l impacts a s s o ci a ted wi th thi s major r es o urc e ext ract ion al ter nati ve wou ld be si gn ificant . The t h i rd and fou rth al terna ti ves , wh ich pro posed the expans ion of ex isting mi ni ng ope rat ions and on s i te use of aggre gate ob tained du ring grading, wou ld re su l t in the re ducti on of the 50-year aggregate de fi ci t. A combi nat ion of t he s e last two a l t e rn a ti ves wou ld pro vide a re du ct i o n of the re g ion wi de supp ly defi cit with m i ni m a l si gn ifi cant adverse effects r e su l t i n g from the mi ning operat ion. The ec onomi c fea s i bi lity of mi ning and process ing during g r a di n g wou ld have to be det e rmi n ed a fter S o uth Poway Pl a n n ed Commun i ty grad; ng pl ans were devel oped w h e n a tota l amount of recove rable ma terial was esti mated . An eval uati on of impacts a s s oci ated wi th th ese latter al ternati ves is provi ded be low. 1 PRe Engi neering, Inc., Analysi s of Agg regate Re sources , Bueh ler Pl a n ning Area , Augu st 1984 . 4-13 Expansion of the Exi st ing Mini ng Op e r at ion This alternat ive wou ld al low the limite d e x p a n si on of t he Pad re Transit agg regate prod uction pl ant l o c at e d in the s o uth ce ntral po rtion of the Sou t h Poway a r e a . The und e v e l o p ed a rea east of the exi st ing Padre T r a n s i t property b o u n da r i e s co uld be i nc orporated i nt"o the mi ni ng p l a n . A tot al of a pproximately 13 .5 a c r e s cou ld be opened to m i ni n g acti v ities with a pot ential yie ld of app roximate ly 1.2 mi ll ion t ons of ag gre gate ma t e r i a l. The 13 .S-ac re ext ens ion wou ld al low an ex p a n s i o n in m i ni ng a c t i v i ti es wi th mi nor v i s u al impacts . Further e x ten s i o n s , whi ch a r e feas i ble, wou ld resu lt in t he l o s s of b u ffe r i n g ri dgelines a nd more si gnifi c a n t vi sual impacts . A lthou g h the mi ning a r e a wou ld ex pan d, th e size of the proce s sing plant w ould remain the s ame un les s the aggregate dema nd increased . Produ cti on ra tes would re ma i n co ns ist ent wi th market dema nd and th e r ef o r e , the i n t e n s Hy of e x i s tin g noi se, ai r and dust po l l u t ion and tru c k traf fic w o u l d al so fl uctuate wi th ma rket d e ma n d . The increase in m i n a b le land wou ld mean a large r vi sual ly a l tered area . Imp a ct s on the fu ture plan area de v e l o pme n t as soci ated with the mi ni ng act i vi t i e s wou ld va ry dependi ng upon the ty pe and l o c a t i o n of land uses permi tted in the South Poway Pl anned C omm un i t y . Carefu 1 pl an ni n9 wou ld be n ee d e d to a s s ure that impacts from the e x i s t ing and e x p a n ded ope rat ions on f u t u re de v elop ment wou ld be avoi ded . T h e mi ni ng o p e r at i ons cou ld ha ve vi s ua l, noi se a n d truck traffic e ff ect s on pro p o s e d deve l opment if bu ffe r zones a n d app rop ri a �e truck ro utes w e r e not es tab lis hed. F u g iti v e ai r an d dust emi ssi ons wou ld be re gu l ated pu rsuant to n a t i o n a l ambi ent air q u a l i ty standards and should not ha ve an effect on su rroundi ng de vel opment. Ex i s t ing t r uck traffi c impacts on s u r ro u n d i n g res i dents cou ld be mi t i ga ted if a new north-south access ro ute w a s de vel oped that el i mi nated th e use of eX isting Beeler Canyon Road and ro uted truc ks di rect ly onto more m a j o r roads such as the S o uth Poway Arter; a 1 • Such a road is p ro p o s e d as pa rt of the S o u th Poway Comm unity Plan (Ex hi b it 6). On si te Use of Aggr ega t e Obt aine d Du ri ng Devel opme nt A pl an for the ons ite use of aggregate o b t a i n e d d u r i n g t h e d e v e l o p me n t of the South Poway P l a nn e d COl1lTlun i ty wou ld be impl emented under thi s al terna ti v e. The fo l lowi ng is an ou tl ine of the p r o pose d plan: 4-14 Du r i n g gra ding act; vi ti es , con gl omerate wou ld be proces sed fo r use in concret e, base ma teri als for o ther materi al s nee ded fo r the de v el o pment of t he area . re covered fo undati ons and and The unusabl e materi al o bt ained during p ro c e s s i ng wou ld be used fo r fi ll ma t e ri a 1. Gra di ng p l a n s wou ld be de s ign e d to avoi d the need to import or e x p ort ma teri al s. The economi c feasibi lity of the o u tl ined p lan has not bee n e va luat e d and wo uld depend on indi v idual proj ect pl ans and t h e need for and cost of a g gre g a t e proc essi ng faci l i t i e s in a d dit i o n to Padre Tra nsi t. Padre Tran sit curre n tly mi nes wi th in a o n e -m ile rad ius of the pl ant, not only beca use the sup ply o f res ou rces is ab undant wi th in the one-mi le area but also bec a u s e it is current ly. not eco nom i c a ily fe as ible to haul un proces sed materi al fU rthe r than one mi le. For th is re a s on , a p o rt a b le pro c e s sing plant may need to be uti 1ized near si te gradi ng a nd de ve l opme nt acti vi ties and re l ocated du ri n g th e di ffe rent de vel opme nt and gradi ng ph a ses. How e v e r . if futUre studi es re veal that a port a b le process ing plant is not economi ca lly fe as ible or des irab le , ex port ma ter ial from grad ing acti vi ti es could be tra nspo rted to Padre Tra n sit and e ith e r stock.pi led or illlTle di ately processed for fu tu re ons ite use or sa le . Truck tra f fi c ou tsi de of the de vel opment wo uld d e c rease due to the redu ced need to i m p o rt or export materi als. Combi nation Aggr egate M i n i ng P l a n The altern ati ves di scussed above cou ld be combi ned i n t o a v iab l e de v elop ment program whi ch incorpo rated plans for e x p ans i on of the e xi s t i n g mining ope r a t i o n and on site use of aggregate obt ai ned du r ing g r a d i n g . Wit h thi s app r o ac h , the aggregate re gi onwi de supp 1y def; cit wou 1 d be d e c r e ased , and at t he same time a demand for aggregate wo uld be fi l led . Impacts as soci a ted with t h e expo rtation and imp o r t a ti on of ma t e r i a l s wou ld be red uced due to the de c r ea s e in th e ne e d to hau l unusable materi al s aw ay f ro m the si te or a ggr ega t e to the site. If the ons i t e use of aggregate m at e r i a l s wa s f ound to be ec onomi cally fe asible, these two al ternat i ves co ul d be c oo rdi nated wi th ons ite devel opme nt acti viti es . 4-15 4. S t r u c t u r es should be de si gned in accordance wi t h th e ci ty of Poway bui lding c od e to ensure that ea rt hquake standa r ds are met . 5. If exi st ing ea rthen dams are re ta ined on site , hazards shou ld be avoi ded by tho ro ugh ly investi gat ing t h e stru ctu ral integri ty of ex ist ing dams wi th res pect to· a nt i c ipa t e d sei smic ac ti vity. 6. Withi n re si dential areas , over-i rri gat ion. l e a ky swi mmi ng po ol s or uti lity pi pes , and sept ic sy stem/leach line di scha rge wh ich can co n t r ibu t e to land sl ides shou ld b e avoi ded by ca refu l p l a n ni n g and des i g n at the t e n t a t i v e map sta ge . 7. Eros ion potent ial du ring grading a n d constructi on p e r i o d s shou ld be control led with rap id de vel op ing planti ng tech niques, su ch as hy dro seeding. To the ex t ent fe as i b l e , gra ding sh oul � be s c he d u l e d to avoi d the ra i ny mo nths of late fa ll th r ough early s p r i n g . Temporary eros ion control me as ures such as pe ri me ter sa ndba gging and desi l t i n g ba sins sh all be inc orpora ted into fi nal g ra d i n g pla n s . 8. Lon g-term so; 1 eros i on sho u l d be avoi ded us; ng re vegetat ; on and prope r drai nage cont rol d evi c e s such as si lta tion bas ins, te r ra ce dra i ns , and downd rai ns , and brow ditches . 9. A re clamat ion pl an for the ex isti ng Padr e Tran sit operat ion and a n y futu re expans ion should b e prepa red in acco rdance wi th the city of Poway su rface mi ni ng ordi nance . 4-17 n ort h e r l y di re c tion. Poway Creek i s located off site bu t re ce ives ru no f f from the northe rn portion of t h e site and a l s o fl ows w e s t e r ly . These ma jor channel s then me rge with P o me r a d o Cree k and become Penasq uitos Creek . Exhi bi t 12 il lus trates su rroundi ng drai nage fea ture s . Ra inf al l ;n P oway occu rs a l mo s t exc l usi vely duri ng the fa ll and w i n t er mo nths be twe en Oc tober and A p r i l ; annual ra inf all ave rages ni ne inches . Be eler Cree k floodplain extends the length of the southern p r op e rty bou n d a ry and the flow level from the lOO-year storm (Q100 ) ;s e s ti m a te d at about 3,700 c ubi c feet per sec ond (cfs ) at e xi s t ing cond i tons wh ere the creek passes unde r Pomera do Road. T h e Poway Creek fl oodpl ai n e xt e n d s the 1 en g t h of the prope rty (offs He ) and the Q100 fo r Poway Creek at Sta nd; sh Ori lie is about 5,600 cf s. Th ese -channel s are subject to change in confi gu r a t ion due to fl oodi ng. Orai na ge i m p r o v e me n t s affected by r uno ff at the proj ect site were ana lyzed by PRC Engi neeri ng, Inc . in 1984 . Th is Hy drol ogi cal An alyses i s c onta i n e d in Appendi x 0 and desc ri bes the drai nage bas ins 'and existi ng fa ci lities and pot e n t i a l impa cts to the se by de velopment . D rai n a g e improveme nt s cu r rent ly exi st al ong the northern and w es t e r n site bo unda ries in c o nj u n c tio n wi th deve l o p e d areas . Refer to Exhibit 12 for t h e locat ions and ty p e s of t h e s e 1 mp rovements . T h ey are eval u�ted b e l ow as ei ther adequate o r i n a d e qU ate for fu ture de vel opment . Th e re are no i mp o r t a n t fa ci lities along the eas tern and southern pro p e rty bo u n d a ri e s . To the west are two cu l verts unde r Pome rado Road and a smal l b r i d g e on Pom erado Road wh ich c ro s s es Beeler Creek . The se aN! cons i dered adequate for Beel er Creek 's u sua l inte rmi tt ent fl ow b u t inadeq uat e fo r the IOO -yea r storm. To the north is a r e i n f o r ced c o n c re t e p ipe (Re p) at Montauk Lane , a dip in Me tate L a n e fo r overl and ru nOff . a c o rru g a te d met al pi pe (CM P) and arch , a re info r ced c o n c r e t e box (RCB ), and another CM P lead ing to a CMP arch . Mo st of these fa ci l iti e s are ol d and appear to ha ve been d es i gn ed for the exi st ing d e vel opments o n l y and fo r a st orm of lesser m a g n itu d e than the lOO-y ear s t o r m . I n a d d i t i o n . the s t r e a mbe d al ong Mont au k Lane has deteri orated co n s i derab l y u nder natural c o nd i t i o n s . Newer re si dent ial d e ve l o pme n t ea st of Commun ity Road ins t a l led a n Re p a t W ood g a t e Place and an RCP at G r ims l ey Street wh ich a ppe a r to be c u rre nt ly �n a d eq u a t e a nd ade quate . re spect ively. 4-19 Increa ses in down stream drai na ge fl ows are regu lated by t he Nat iona l Fl ood Insurance Act of 1968. Thi s act limi ts di recti on and vo l ume of fl ow Chan ges and re q uires notificati on of ch an ges to down stream ow ne rs . Gro undwat er Groundwate r is of importance as an inducement to vegetat ion and as a natural sto rage fad 1 ity. It has be en det ermi ned in recent y e ars that San Diego 's groundw ater re sources are di mini shing due to overdraft. Geol ogi c and soi l condi tions in Poway are n ot condu ci ve to groundwater rech arge . therefore the ci ty imports water for dom�st ic and ot he r uses . A few area s. howeve r, in the eastern s e Ct ion of the city re ly on wel ls for potab le and i r r iga t ion wat er . On site groundwater app ears to be enco unte red on ly in al luvial dep osi ts along drai nage Channels. It is lik ely that groundwater wi ll be encoun t e r e d between tl'le re lati ve ly pe rmea ble St adium Con gl omerat e fo rma ti o n and the less permea bl e Fr;ar1s Formation duri ng gra di ng activities on site.1 Groun dwat er reC harge wi th the prope rty bo u nda r; es occurs in drai na ge chan ne ls, parti cul arly Beel er Cre ek , and occas ional swal es whe re wa te r ponds . Water Qual ity Prima ry respons ibil ity fo r al l wat er qua lity re sts wi th the Sta te Water Resources Cont rol Board. It is supported in Poway by the San Di ego area division, tne San Diego Regi ona l Wa ter Qu al ity Con trol Boa rd (RWQCB ). SURFACE DRA I NAGE Surface wate r on the si te is ma pped by tne U.S. Geol og ical S urvey as inter mi t t e n t , however, most of the time , tne drai na ge channel s are d ry . Storrn wa ters Wh ich col lect on the site may gather p l a n t nutri ents , sedi ments , and debris associ ated w 1 t h g razing of livestock . Su rface water in the Beel er Creek d rainag e channe l soutl'l of the Padre Tran sit mi ning operati on in parti cu lar, con t a i n s a re lati ve ly hi gh load of s edi me nts due to the crushed aggregate wh ich c u rrently spi lls into th e channel . 1 Geocon , Inc., Geo log i c Reconna issance for Buenler Pl anni ng Area , November 1982 . 4-20 i'��)l ' 'N"" " " 1 1 ..::·:-' �,; " . '. \ \ .. " , 1·1r "'��···· -.,' ..• ' ',-' �-' . , . ..•. ,'�,!4"" -� '".:-'.-!" : -� -r . �-" " .' -......... -"." Hydrology . . .� .. ' " '�'r �... . .,� .. . .. �:;, , SOUTH POWAY PLANNED COMMUNITY ." LEGEND --Drainage Basin Limits ,..-/ Existing Flow Line +6 Concentration Points ",... . ../ USGS Blueline Stream: a'00 100-YearDes!gn Starn (cfs> m Floodplain � Ponds EXHIBIT 12 Regi ona lly, wat er qual ity in su rficial waters is good . Poway Creek, wh ich drai ns a port ion of t he City of Poway and the northern porti on of the site. is the on ly creek in the site vi ci ni ty wh ich ha s been IOOni tored for water qua 1 ity by the RWQCB .1 Wate r qu al ity in Poway Creek is rep res ent a ti ve of reg ional su rface wat ers . The qual ity is re lati ve ly good al thou g h some what hi gh in tot al di ssol ved sol ids (TOS ). Surfa ce waters tend to decl ine in qu ality as they pro gress downstream and assume contri butions o f water pol l utants from agri cultural and urban land uses su ch as pl ant nutri ents, heavy me t als, and sediments . Of particular concern in the Penas qui tos Hy drol ogi c Un it is the wate r qu al ity o f the Pe rJasqui tos lagoon . The lag oon is located approxi mate ly ten mi les west of Interstate 15 and is a major coas ta l wetl and en compas si ng about 38 5 ac res . About 70 pe rcen t of these acres are comp ri sed o f sal t marsh vegeta ti on and ti dal ch annel s. Du ri ng mo st of the year , the lagoon is closed from the ocean wh ile water po llut ants influx conti nual ly. caus ing ma rked wat er qual ity de grad at ion. The bi ol ogical va lue of the Pena s qui tos La goon is hi gh because of the scarcity of salt water ma r sh l ands in southern Ca lifornia. Wate r qu ality in the lagoon di rect ly affects th e b i 01 og i ca 1 qu al i ty • GR OUNDWA TER Groundwater with in the Penasqu itos Hy drograph ic Un it is cons idered to be of mar ginal quality for dom est ic pu rp oses and of sui tabl e to infe rior qual - ity fo r irri ga tion pu rposes . The rea son for t hese inferi or rati ngs is due prima ri ly to the hi gh concentrati ons of lOS . C o astal area groundwater is naturally hi gh in sal ts due to its ma ri ne ori gi n. Regi o na l grou ndw ater qua l i ty tends to be less than good due to lim ited ra infa ll and irr igati on with Col orado R i ve r wate r. 4.3.2 IIllPacts Drai nage/Flooding Impacts to drainage and fl oo ding nea r the proj ect site are an ticipated to incl ude 5i gn ificantly increased runoff vo l um es (th is wi ll conti nue 1 Te l ephone co nversati on w ith Greg Peters , SDRWQCB , No vembe r 1984 . 4·-2 1 downst ream of the site). si gn ifi cant mod ifi cation of ex isting fl ow patte rns and channe' 1 ocat ions a n d featu res , and expos ure/protect ; on of devel opment to flood h a z a rd s . Stormwater runoff wi ll increase in vo l ume and p eak fl ows wi ll change in time and inte nsity as development cov e r s soils wfth i m pe rv iou s su rfaces such as co n struct i o n pad s , bui ldi ngs . a nd ro ad s. Runoff di re ction wi ll change as stormwater tends to fa 11 ow r oa dwa y s and ot h e r ma n-made slopes until it ;s co llec ted and r e di r ect e d by storm d r ai ns . Runoff from irri gll ti o n of lands capi ng m ay contri bute fl ows to new drai na ges wh ich are current ly dry or sea sonally dry . For pu rposes of th is ana lys·is. co nstruction pad and st reet fl ow di rect ions were roughly dete nni ned us; ng a h yp o t h e t i c a l grading scheme . The impact s of the pro po s e d de v e l opmen t appear to be s i g n f f ica n t dra i nage di ve rs i o n and increased ru noff. Impact s from the p r o p o s e d proj ect to ex istir).9 dra ina ge fa ci l ities at the p r o p erty pe rimeter include : a. runoff draini ng i nt o the RCP un d e r Met ate Lane wou ld increa se about 60 pe rcent to 185 cfs and the very smal l dete nti on basin upstream from the pi pe wi ll c ant in ue to ; nadequat el y reta rd st r e a m vel oc it i es ; the s treambed adj acent to M ont a u k Lane wo u l d conti nue to dete ri orat e; b. f l o ws at Metate Lane a n d COllJl1uni ty R oad Rep wou ld almost do ubl e to about 595 efs ; c. fl ows at the CMP and joining arch wh ich drai n into Poway Creek from Commu nity Road would increase abo ut 20 pe rcent to 128 cfs j d. the runoff to the RCP at Woodgate Pl ace wou ld increase by ab out 15 p e rcent to 423 c f s ; e. the b r idg e at Pomerado Road whi ch crosses Be eler Creek wo ul d remai n un dersi zed ; 4-22 ... -_� ... _ L. -_. -.... :::. .-'. -,'�' f. ru noff to the two cul verts located un der Pomera do Roa d wo uld dec rea se due to diversi on of runoff to other areasj the facl lities wo ul d rem a in inadequate ; g. erosion impact s to the Beel er Creek bed area and tri buta ri es are unknown wi thout fu rt her site specific studies; h. the Gri msley Avenue Rep wou ld not be impact ed be cause pro posed devel op ment is mi nimal at the subbasin wh ich drains to it. G,.ou ndwater Impacts to groundwater incl ude a dec rease in aqu ifer recharge due to the large area wh ich wi ll be devel oped with impervious su rfaces such as pads , bui ldings , and roads . The mo st si g ni fi cant re cha rge area ons ite is the Beeler Creek d ra i na ge channel . Th is . channel wi ll primari ly rema in i n its ex isting natu ral state except for the con t inuing adj ace nt aggregate mi ning operati on and the smal l res identi al dev el opment proposed al ong the channel in Ma st e r Plan Su bar ea 5. Water Qual 1ty Both short-term and long-term impact s as we ll as di rect and indi rect impacts cou ld be associ ated with impl ementation of the propo sed proj ect . Sh ort -term impact S are re I ated to co nstructi on and grad1 ng whi 1 e long-term impacts are associ ated wi th the change in land forms and urban runOff. SURFACE DRAI NAG E Without any miti gation me asures , except the natural ri pari an ve getation wh ich fi l te rs out sed iments and urban po ll utants somewh at . eros ional pro cesses duri ng g ra d i n g and con st ruction of the proj ect wo ul d increase si g ni fi cantl y . The sediment load of su rface fl ows woul d increase markedly and the he avier particles woul d increme ntal l y fa ll out ;n areas of pond ing or s l ow fl ow rates enro ute to the Paci fi c Ocean . Silt and s ed iments wo u l d be depos ited in the se nsitive Pe nasqui tos lagoon . These impact s can be mi ti gated wi th proper management pract ices such that sed i ment contributions to water fl ows are re duced bel ow pre-devel opment level s. 4-23 Mo st p ol l u t e d su rface waters come from indust ri al operat ions and w a te r q u a l i ty �ou ld be impacted by urban ru noff from street s a nd industri al /colTlllerci al are as . A s s u mi n g that h a z ard o u s indust ri al wa stes a r e pro perly disposed , urban runoff wou ld ge neral ly contain heavy me tal s, oil and gre ase . deb ri s, and some pl ant nu tri ents and herbi ci des from land scaped areas as wel l as s o l v e n ts, lubri cants, and det ergents di sposed of in storm drains by indi vi du al res idences . Sal ts may also be added to d r a i na ge wat ers downst ream if water softening agents are uti lized i n potable water be cause wa ter treatment pl ants dispose of t re a t e d wa ter in the Penasqu itos Hy drograph ic Un it. T h e proj ect-gene rated p o llut a n t s wi ll incremental ly add to the degradation of Pe nasqu itos Lagoon al t h o u g h as an individual devel opmen t. the proposed proj ect wo u ld not si gn i f i c a nt l y impact water qual ity i n the P e nas q u itos Hy drographi c Unit. GROUN DWATER Grou ndwat er qu al ity i mp a c t s are de te rmi n e d by t he pol l utants contai ned in the wa ters and the characteri stics of the soi ls through wh ich the wat er percol ates . G r o u n dw a t e r is not ant ici pated to be Si g ni fi cant ly i mp a ct e d by the proposed proj ect . S a l ts wi ll p r obab l y i n c rea s e i n s ign i f i c a n t l y due to irri gati on with Col ora do Ri ver wa ter . As previ ous ly me n t i o ned , ri pa r ian v e g e tat i o n within t h e Beel er Creek area w o u l d fi lter s ome of the urban runoff p o llut ants pri or to p e r c o lati o n . Cumul at ive Impac ts . C umu l at i v e impacts to the P e n a squi t os Hyd r o gra p hi c unit are primari ly the combi ned w a t er q u a l i t y impacts of a g r icu ltu r a l land use , con struct ion, and u rb a n d e ve l o p ment . D e v e l opme n t of th e proposed pro j e c t wou ld add i n c r e me nta l amounts of s e d i m e nt s , urban runoff pol lu tants , and p l a nt nut ri ent s and sa lt from lan dscape ru noff. Down st ream, th ese pol l utants from the e n t i re hy drograp hic un it acculTIJ 1 ate in the Pe n asq ui tos Lagoon and cause al gal bl o oms , sedi mentat ion, a n d su bsequent bi o log ica l degradat ion. These p o l l u t a n t s (wi th the except ion of sediment s ) al so combi ne to degrade groundwa ter bas in qu al ity. The proj ect would add t o these impacts incremen tal ly as wel l as ; nc rement al ly dimi ni shi ng ground water re charge d u e to u rb a n de ve lopment . The pro j ect wi ll not d i m i ni s h grou ndwater suppl ies through p u mp i n g , however. 4-24 Project Al ternati ves . Impacts of Al tern ati ve (3) to drainage/floo di ngt g rou ndw ater and water quality wou ld be very simi lar to those of the pro posed p roj ect . Impacts of low intensity Al ternati ve (1) w o uld be mi n imal. Minor d ive r s i on of drai nage channel s wo ul d be requi red due t o roadway ali gnment s. Runoff vol umes wou ld increase somew hat at exi sti ng fa ci litfes except t h e cul ve rt s unde r Pome rado Road wh ich wou ld recei ve re duced flows . R ep l aceme nt , expansi on , or addi ti on of fac i lities w o u l d be re qui red in al l al te rn ati ves incl uding IIno proj ect ll in order to b r i ng exi st ing faci liti e s up to IOO-year st orm standa rd s. 4.3.3 Mi t igat ion Measures 1. Impacts to ex i s t i n g drai nage fac i liti es cou ld be mi ti gated with expan ded o r addi tional faci lities. Speci f;cal ly� these are the fol lowing: a. Con st ruction of a larger det e nt ion ba si " up stream of Met ate Lane; b. I m p rove me nt or rep laceme nt of the Rep at Metate/C ommun ity Roads . a detent ion bas in u p s t r e a m of the RCB ; c. Addition of a new sys tem of c a p a c i ty equi va lent to the exi stlng CM P and a r c h at Community Road ; d. A ddi t i o n of det e nt i o n ponds above the RCP at Woodgate Place ; e. Replacement of the exi sti ng bri dge du r i n g the proposed re a li gnment of Pome rado Road ; f. R e p l a c e me n t or e n lar g e me n t of the two Re p 's unde r Pomerado R oa d ; g. Furt he r site speci fi c studies of the Beel er Creek a r e a to d e t e rm i ne impacts and mi ti gat i on measu re s. 2. SpeCi fi c drai nage and fl ood control des i gns shall be su bmi tted in con junc tion wi th tentati ve ma p/devel opment re view ap plicati ons and app rova ls. These des igns shall be in c o n f o Mllan ce wi th city of Poway w a te r resource c o n s e r vat i o n pol i cies and fl ood ha zard ma na gement po l icies: 4-25 a. al l st ructures must be ra ised one foot above fl ood level ; b. a hy drol og ic or civi l engi neering repo rt must certify the IOO-year fl ood level , and no change in up st re am or do wn st ream flood plain; c. a l l -we a t h er access to dev e lopme nt must be prov ided ; d. drai nage mi ti gat ions shal l be ut i lized to mai ntai n natural drai nage channel states. 3. Grad ing nea r the fl ood pl ai n may re qu ire channel ban k and sl ope st ab i l i za tion mea sures such as vegetat i on , drop structu res , and rock ri prap slope protec tion. To prot ect from eros ion or hy drau lic impacts , gra ding a nd dev'e lopme nt in the Bee ler Cree k fl oodplain area wi ll be iden ti fied in sub sequent tent at ive map plans . 4. The proj ect wi ll comply wi t h provi si ons of the Nat ional Fl ood Insur ance Act of 1968 wh iCh red uce potential fl ooding and drainage impacts dow nst ream . 5. To mi nimize si ltati on and sed imentati on i mp acts from gra ding and co n struction, the fa llowi ng measures shal l be imp l e m e n t ed : 4. location of temporary si Ha tion ba sins at stra tegic dra1 na.ge poi nts ; b. pa ving or ra pi d seeding of grad ed sl opes ut i lizing method s such as hy droseeding; c. schedu l in9 of maj or grad ing and con st ructi on act i viti es during the non-ra iny season mo nths of April through October; d. pe rimet er sandbagg ing re vetment s or pl asti c membrane mat eri al to stabi lize slopes and red uce erosi on and sedimentat ion impacts; e. divers ions of fl ow from steep sl opes du ri ng grading . 6. Lon g-tenn eros ion and sedi ment control shal l be prov ided by proper pl acemen t of 5i l tat i on ba s; ns , do wnd rai ns. terrace dra ; ns , veget ati on of sl opes, and mai nt ena nce of ri pari an areas . 7. Stornrwater management p1ans shal l be de velo ped to re duce wa ter q u al ity degradati on such as a st reet clean ing program , peri o diC sto rm dra i n cl eani ng , and land scape plans wh tch re duce pl ant nut ri ent and herb1- 4-26 ci de impacts to wa ter qu a l ity . U r b a n w a t e r p o llut a n t s from sol vent s and det ergents used to wash auto and truck mot ors and the oi ls and greases that are di ssol ved mu s t be co llected for t r ea t me n t and not al lowed to e n t e r the storm drai n sys t ems. Resi dential df sposal of such materi al s i nto storm drai ns shoul d be di s cou ra ged . 8. The proj ect shal l comply wi th t h e Cal iforni a De partment of Water Res ou rces recolTlTlendat ions and r egul a ti o ns re l a ti ng to wa t e r con serva tion and flood damage prevent ion. I n c lud ed are the fol l owi ng r e com me ndat ions : d. use Of re cl aimed water for i r r i g a t i o n pu rp oses � b. i n s t a 11 at i on of 1 ow -O ow s h ow e r s , fa ucets , toi l ets and wate r co nservi ng ap p liances , c. drought-to l e�ant lands capi ng, d. use of pe r vious pa ving ma terial s. 4-27 4.4 BIOLOGICAL RESOURCES 4.4.1 �i sti ng Condi tions Bi o log 1 c a l re sources on the 2,SOO-ac re South Poway s ite we re 1nitial ly assessed by Haro l d A. Wi er As s o ci ates, Bi 01 og1 cal C o nsul t a n t s in November 1982 . The p urp o se of the study was to identi fy and map bi o l o g 1ca l re sources on the site a nd to ou tl ine p os s ibl e biol ogi cal oppo rtunities and constrai nts to devel opme nt of the area . Su b seque n tly , a s e c ond compl ete survey and m a p p i n � of biologi cal re sources was pe rformed by the PBR Bi ol og ical Serv i c e s Di vi sion. Th is assessment was done in late Sept ember 1984. Both s u r v ey s are refe renc.ed in the fo l lowi ng text . The PBR biolog1 cal survey i s contai ned in A p pe n di x E. High r i d g e lin e s and steep sl opes wi th a ssoci at ed canyons characteri ze the si t e. T h e s e phys iographic fe atures combi ned wi th the semi-arid cl imat e a nd the g e n e ra l l y thi n so ils dete rmi ne the types and f re quency of the e x i s t i ng fl ora and fa una. Th e veg eta ti o n on site is p r ima ri l y coastal sage scrub. Large a r e a s of grassl and occur al ong the val ley fl oors a n d lowe r sl opes of the proml nent no rthern and so ut h e r n hi llsides . To the so uth along Se e l e r Creek are r i par ian areas and cha parral . Re sidenti al are as , road s and · the Pa dre Tr a ns it mi ni ng o pera tion have d1 stu rbed the native veget a ti on o n l y in rather r e s tri c t e d areas onsite. The se habi tats are di sc ussed be low and map ped as pl ant commun iti es in E x h i b i t 13. Coastal Sage Scrub The coastal s a g e scrub commun ity occurs p r ima r ily in warm , dry, th in soi led, upl and are a s on si te . It is the domi nant commu nity c om p r i Si n g about 65 p e rc e n t of the vegetat ion on the prope rty . The pl ant spe cies di ve rs ity is high in the coastal sage scrub coltJTlun 1ty. Th e d om i n a n t species are gene r a l l y sh rubs (less tha n fo ur fe e t tal l ) whi ch are dormant duri ng s umme r drought condi tions . The sage s cru b stands ansite ran ge from ve ry de nse to open and grassy. The m o s t cOllll1on s pe c i e s of the communi ty is Cal iforni a sagebrush . 4-28 introduced annual gra s s e s and red uced numbers of nati ve fo rbs . The rema ining native grassl and is c om p r i s ed primari ly of the bunchgrass . pur ple n e edl egrass wi th smal ler amo unts of other pe ren ni al grasses such as junegrass pl us the nat ive a nn u a l grasses fox tai 1 fe scue and Paci f1 c fe scue. A variety of wi l dfl owe rs al so occ ur. E uro pean annual gra sse s and broadl eaved plants are t h e major compone nts of the annual gr asslands , soft chess (somet imes with its a s s o c i ate ni tgrass ), red brome , and ripgutg rass domi nate . Va l ley a n d swale a rea s incl ude n o n -n at i ve . herbaceous pl ants such as bur clovers an d mu stards . Du ring the ra pid spri ng growth peri od , a prog res sion in f1 0weri ng of di fferent speci es can be ex p ected . Al though heavy gr azing of li vestock has great ly c h ange d the compo nents of the g rassl and v e g e t a t 1 on , wi 1 dl ; fe supported by thi S cOlTlTlu ni ty has changed rel ativel y litt le. Rabbi ts, squi rrel s, and go p h e r s are st il l fo und , but a gra z i ng mu ledeer is r a r el y seen . Med i um and smal l-si ze mamma ls a re sti ll rel at ively a b u n d a nt and di verse in the gr ass lan ds . Incl uded are smal l ro dents such as t he Cal ifornia vol e, valley pOC Ket go pher, and s e ver a l mo use spe cies. Rept iles such as 11zards . !<i ngsnakes , and ratt lesnake s are ex pected . COfIVTIon bi rd inh abi tants inc 1 ude the we stern meadowl ark., horned lark, va rious sparrows , and logge rhead s h ri ke . Rapt ors incl ude the red ta iled hawk , Ame rican kestrel , bl ack-sho ulde red kite, m a rsh hawk , gol den e a gle , turkey vul ture, and var ious owl s. Ot her fo rage rs include the raven , common crow, and ro ad runner . Ri pari an Water co urses ansi te tend to be narrow wi th steep st reambanks wh ich re s trict the ri pari an areas to narrow stri ps of on ly a few met ers width . Ab out fo ur to fi ve pe rcent of the ve g etat i on ons ite is ri p ari an . Water fl ow in these d r a i n a ge channel s is not uni fo rm, but varies wi th season al rains. At times there is on ly a trickl e of wa te r or mo ist sand remai ns . Year-round surface wa ter promo tes the devel opment of a wi llow ri pari an associ ati on . The arroyo wi llow is the mo st abundant species. Th is as soci at ion is limited on si te due to the us ual ly intermi ttent s treamfl ow. 4-30 The sycamo re wood l a nd associ at i on 1 s deve loped where ne ar-surface wa ter is present in stream cha nne ls ye ar-ro und. The Cal i fornia sycamore grows near stream margi ns . C a l iforn i a fuchsia. narrow-leaf mi l kweed , wi ld oat s . and other gras ses are associ ated sped es grow1 ng unde r a nd abo ut the sy camore. Th e sy camo re woodl and on the si te is sparse . The maj o ri ty of the ri pari an vegetat i on on the property is comp osed of ri pari an b r u s h wh ich grows in the st r e am ch annel s and on channel margi ns . Of local importa nce a re s t a n d s of mi lk thi st le. co ck.l eb ur, and curly dock weedy he rb s as soci ated wi th the more moi st r i p a r i a n areas . Two spri ng/seep areas ons 1te. one in Beel er Ca nyon a nd the other located near the prope rty 's northwestern border . s uppor t herbaci ous ri pari an associ at ions (both have been tapped by we lls). The Seel er Canyon site is domi nated by the low. herbaceous pl ants sa ltgrass and ra bbi ti s-foot grass . The no rt hwest ern spri ng site supports he rbs such as broad-l eaved cattail . Ho ok er's eveni ng primrose . and white swe et -c lover � a s we ll as the he rbs fo und at the Beel er Canyon sHe . Sy camo re woodl and and ri p ari an wi 11 ow associ at ions extend upst ream and down st ream of thi s latter si te. A di v e r s e array of an imals may be sup p o r ted by the ri pari an c01TlT1 uni ty. Incl uded are va riou s am phi bi ans . re pti les, bi rds . and mammal s wh ich depend on the commun i ty for one or more rea sons as a wat er or food sou rce or for shel te r. A wi de range of bi rd spe ci es d e p e n d on the ,broad ri parian habitat. Notable speci es incl ude those ment i oned in other cOrMIuni ti es as we ll as the weste rn bl uebi rd , hummi ngbi rds . fl ycatchers , v i reo s , and wa r bl ers . Mi grating bi rds may also uti lize these ri pari an areas duri ng s p r i n g and fal l. Raptors are common in the uppe r b r a n ch e s of trees . pa rti cul arl y the sy camore fo und ; n the ri pari an are as . Si gni fi c ant pred atory bi rds whi ch re ly on these area s incl ude the fo llowing: re d-shoul dered hawk , Cooper's hawk . red -tai led haWK , Ame ri can ke stral, bl ack-shoul de red k i t e , and great h orned ow l. 4-31 D1 sturbed Di stu rbed habi tat s on the p r o p os e d pr oj e c t site compri se about fi ve pe r c e n t of t h e area. Res idence s. ro ad s and the on si te m i n ing operat ion have cont ri buted mo st to the di sturba nce of the nat ive commun ities. Eu calyptus pl anti ngs . ol ive groves . and o t h e r ornamen tal s pl ant i ngs add to the ae sthet ics of the area but al ter the natu ral habitats. The very fe w pl ant spec; es that ex1 st ; n these di sturbed areas are termed rud eral s and are often introduced Eu ropean we e ds . Several stock ponds occur on the 5; te . Ty pi cal p l ants at the pond marg; ns are c a tta i l s , s e d g e s , and wi llows . Th roughout di s t u rb ed areas , animal numbers and species are re duced due pri m a r i l y to the lack of cover and food . Hab itat Su..ary The study area c o nt ai n s sma l l but signi fi cant ri pa rian areas wh ich are rel ati vely undisturbed. Th ese areas are re s t r i c t e d to the st re am channel s on the site. Ri pari an c ommun iti e s are becomi ng increasi ngly va luabl e to the r e g i o n due to thei r deve l opme nt-i mpo sed decl ine. The site po ssesses inh erent bi ol ogical val ue espe ci al ly wh en vi ewed as a ve ry large , rel ati vel y undisturbed a r e a . Ad ded to t h i s is the "edge effect " of p l a n t commun ities a l o ng the ri dges and cany ons. Whe re the pl ant c omm u n i t i e s intergrade or overl ap (eco tones) the wi ldlife habi tat v a lue is g r e a t e r th an that of any s ing l e communi ty . The annual grassl ands and rem aini ng native grassl ands contai n many fl owe r i ng he rbs and prav; de fa r a g e and hab i tat fa r a nu mbe r of bi rds and ma lTllla 1 s wh ich are recogn izabl e to the g e n e r a l publ ic. Sens itive raptor speci es are suppo rted p r ima r i l y by the gra ssl ands a n d ri par ian areas o n s i t e . 4-32 Wi ldlife Move.ent The sHe coul d b e co nsi dered pa rt of a re gi ona l wi ldlHe co rri dor which extends from Pe n a s q u i tos Lagoon e a s twa rd across the property to natural are a s east of the si te . An imal s that ut ilize the lowe r sl opes ' and val ley bottoms' di rt roads and t ra ils as movement corri dors incl ude mu l edeer , c oy o t e . and po s s i bl y bobcat and fo x. Se nsittve Bi ol ogi cal Re sources Th ree sens itive p l a n t species grow on s ite : Sa n Di ego sagewort , coast ba rrel cactus and me sa cl ubmo ss (Ex hi bit 13 ). The si te c on t a i ns the largest , most den se p o p ul ation of t h e ba rrel ca ctus in the r e g ion . Al though not c o n s i d e r ed rare , enda ngered , or threatened by any state or f e der a l . ag enci es, these p l a n t s are co nsi dered urare in -Cal Hor nia , cOllIOOn e lse w h e r e " by the Cal i forni a Nat ive Pl ant S oc i e t y . Ot her se nsi ti ve spe cies are an ti ci pated ons ite but we re n o t confi rmed due to th e fa l 1/ wi nte r survey seasons . Two lizards, the S a n Di ego c o a s t ho rned li zard a n d orange th roat e d wh iptai l may be fo und onsi te . Ot her s e n sit i v e ani mal species o b s e rv ed or expect ed to use the 51 te incl ude p r ima r ; 1y bi rds such as · the northern ha rri er, bl aCK-t ai led gnatcatcher, cactus wren , l o g g erh e a d shri ke , bl ack-shoul de red ki te , and re d-sho ul de red hawk . The harri er , k i t e . and hawk are ra pto r s (bi r ds of prey). Ot her raptors e xpec t e d on t h e si te but not o b s e r ved incl ude t h e go lden e a g l e . turkey vul ture. A1Ie rican ke st rel , and owl s. 4.4.2 I!!pacts Impact s to bi ol ogical resou rces are di s c u s s e d be low. Direct l oss of Ve getat ion and Habi tat . The propo sed proj ect is anti c ipated to remove a b out fi fty percent by area o f the tot al vegetati on coveri n g the site. Di rect loss of v e g e t at i o n and wildlife hab itat wi ll be c o n ce n t rat e d in t h e central po r ti o n of the site propo sed prima rily f o r industrial de vel opment . Additional ve get a ti o n removal fo r r esi denti al l a nd uses (ie., SF -2. RR-C, RR-A, RM ) woul d al so oc cur, wi th undete nn1 ned i m p a ct s att ri but a bl e to the predomi natly l a r g e lot/rural resi denti al cha racter of devel opment propos ed . 4-33 Wl ldl1fe D1 spl acetl8nt . Wi ldlife wi ll be di splaced to su rroun di ng area s of simi lar habftat. Most of these displ aced fndi viduals w i l l be el imi nated d u e to u n s u c ce s s fu l comp eti ti on in an a1 ready f i l l e d hab itat or ecosystem. Some animal life wou ld be lost di rectly due to gradi ng and const ruct ion acti viti es. Erosi on frOll Devel oped Are a Runoff Wa ters. The impervi ous roo fs . st r eet s and paved areas of a devel oped area great 1y 1 n c rea s e the amo unt and acce 1- erate the rate of sto rmwat er run off. These fl ows wi 11 cause ser; ous ero s;on un l ess carefully con trol led. A c o lle c t i o n system must incl ude energy di ssi p at ion d e v i c es wh ere sl ope s are steep . Te mp orary st orage rese rvoi rs may be needed to prevent the accel erated ru n o f f from exceedi ng the hyd rau - 1ic capac ity of ex isting s t r e am ch annel s (See Se c t i o n 4.3.3 HYDROLOGY ). Open Space Devel oJ)llent Bou ndary (nterface . A po tenti a1 i m p a c t at the open s pac e /de v e 1 opme n t boundary is wi 1 d f i re . Fi re can cross the 1 i ne in ei ther di rect ion. Th e best me thod to re d u c e the f1 re t h r e a t ; s the ma1 ntenance of a fuel breaK al ong the b o r d e r s and the pl ac ement of bui ldi ngs back from the crest of hi lls and ri dges . Fue l bre aks wh i c h entai l a reduct ion of pl ant -densi ty. introduct ion of p l a nt spec i es w i th low fuel ma ss . and some i r r i g a t ion wi ll furt her reduce natu ral ve getati on and reduce wi ldlife ha bi tat . Exoti c Pl ant Introducti on on Open Space Borders . E s c a pe of exoti c garden pl ants over the b o u n d a r i e s be twe en propo sed re sidenti al deve l opment and o p en space may occ ur . In most ca s e s the exotic pl ants on ly cross the bo und ary as far as the infl uence of irri gati on . Impacts of Acces s to Retlai nfng Nat ural Open Space . In are a s of natural open space , uncontrol led acces s, off-road vehicl es , and pl anned rec reati onal uses such as trai ls wi 11 remove addi ti onal amo unts of the nati ve v e ge t a t i o n and the indi rect effects of increased human pre sence wi ll deter inhabi tat ion by an imal life. 4-34 Oth er speci f ic di rect and indi rect i mpacts as soci at ed wi th devel opment of the pro po sed proj ect are iden tified in the fol lowi ng text. Re.o val of Syca.ore Woodland and Ripari an Brush Sy camo re wood l and and r1 pa r1an brush communities are located primari ly within des i gnated o pen space or ru r al re sident1 al areas at the north . west and south pro perty limi ts (Su bareas 1.4 and 5). Some loss of sy camo re wood 1 and areas may res ult from the extension of maj or nort h-south co l lec tor roads (COITITlunity Road and Mi dl and Road ). the possible extens ion of the no rt h 100 p ro ad we stward to Pome rado Road as a secondary acc ess . the con struction of a deten tion basi n in the north loop road area, and industri al devel opment we st of the ma in loop ro ad in Suba rea 1. Isol ated ri pari an bru sh areas associ ated wi th sma ll ponds within Su ba rea 2 wi l.1 be el iminated ,wi th development. These st ock pond s re present an un common reso urce in the area . Si g nificant ri pa ri an brush and wil low ri par ian ha bi tat ;s p rese rved w1 thin the Beel er Cree k fl ood pl ai n we st of the Padre Transit operat ion . These areas al on g the creek wi ll retain some of the1 r ha bi tat va 1 ue and opportu niti es for wi 1 dl He moveme nt . However , the val ue of these area s coul d be diminished by eros ion and sedi mentation associ ated with ru no ff to Be eler Cree k from de vel o ped area s of the site . Re.ova l Qf Raptor Hab i tat The maj ority of the grassl and habi tat uti li zed fo r rap tor fo r aging is loca ted on ttle northern, western , and southern sl opes wh ich wi ll be primarily re tained in nat ural open space . Theref ore , impact s due to gra ssland re mo val are anti ci pated to be insi gni fi c ant . Sens itfve Speci es Project devel opment wi ll re su lt in the loss of si gni fi cant numbe rs of co ast ba rr-el cactus , mesa cl ubmoss . and San Di ego sagewort associ ateci wi th the coa stal sage scrub conrnunity. Loss of co ast barrel cactus is cons i dered pa r ticul arly si gni ficant gi ven the high concent ra ti ons i d e n t i f i ed in the si te . 4-35 Loss of si gnifi cant coa stal sage saub area ons ite can be ex pected to reduce f r eque ncy of use of se v e r a l de cli ning spe ci es , incl ud ing c a c t u s wren , bl ack-tailed gnat cather , and po s s ibl y San Diego horned l i z a r d and ora nge-th roated wh i pt a i l . Cum ul ati ve Impacts. Potenti al c um ulati ve i mpac t s to re g i on a l b i o l og i c a l resources resul t from the com b i ned effects of inc remental losses of habi tat . Of parti cul ar re gional concern is th e loss of ri pari an h ab itat and impacts to raptor s p eci es. However . the proj ect wi ll no t resul t in 5i gn i fi cant r emo n 1 of ri pari an h abi t at . S ub stant i a 1 g ra s s 1 and areas are re tai ned in desi gnated open space. conservation . and rural r e s i dent i al areas en comp ass ing much of the proj ect s ite, and no cumul a ti vel y s igni fi cant effect is anti ci pated. ProJect Al ternatives . The hi gh i nt e n s i ty al te rn a ti ve (3) can be ex pec t ed to produce impacts to bi ological re s o u r c es wh ich are ve ry simi lar to t h o s e of the p ro po sed al ternat ive. The impacts co u l d be s l i ght ly greater due primari ly to mo re hom e site s and ad ditional r e side n t i a l a r e a s . Alternati ve (1), howeve r, wo ul d not have such si gn ifi cant i m pac t s . Thi s a lte r n a t i ve p r o p oses fewer roadways . 1 ess total development area,· and most importantly it proposes on ly res ident ial de vel opment . Opportu ni ties to design resi dent ial areas to pres erve speci fi c reso u rce feat u res or ret ai n n at u ra l mi gration cor ri dors co uld re su lt from red uced land form mod ifica tion requi reme nts rel at ive to industri al devel opments . 4.4.3 Mi tigati on Neasures The fol lowing mi t igat i on measu res are re c onrn e n d e d to red u ce or el imi nate impacts to biol og ical r e s o urc e s . 1. The Devel opment P l a n sh al l incl ude st a n dard s and guidel i nes for the preserv at ion and man a g eme nt of permanent open spac e. incl uding s1 gnl fi cant woodl and res ource areas and grassl and slopes . Mai nte nance of e x tensi ve conm on o p e n s p ace areas shall be the re spons ibility of the Ma ster Property Own ers j Associ at ion . 4-36 ,:. .... 2. Proposed C OrmJ u n i ty Road and Hi dl and Road extens ions and the pass i bl e extensi on of the north loop road shou ld be al i gned such that loss of sy camo re woodl and or wi llow ri pa ri an trees is mi ni mi zed . 3. Wi th the except ion of re si dent ial use areas , the spoi ls of earthmov ing, f n c l u d i n g road co nst ruction, shal l be confi ned wi th in the ide nt i fied limi ts of gradi ng (Exh ibit 10 ). Exposed f1 11 sl opes , whe rever they occu r, shaul d be su rfaced wi th topsoi l s and revegetated befo re they are eroded by ra infal l. A mu lch may be re qui red to protect fi ll sl ope su rfaces whi le veg e tat ion is bei ng esta bl i shed . 4. Landscapi ng stand ards shal l be de veloped for the ve getat ion of graded areas and peri met er sl opes . Nati ve pl ant s shall be used to the ex tent po ssi ble. 5. D r a i n age co ntrol s incl ud ing energy di ssipa tors and detenti on basins shal l be utl l ized to prot ect ri pa ri an areas (eg., Beel er Cree k) from the erosi on/sedimentation e f f ec t s of urba n ru n off (see HY DROLOGY ). 6. Parkways and med ians in devel oped areas should be pl anted or land scaped wi th trees . Use of nat ive or i nd i g e n o u s speci es is enco urage (eg., Cal iforni a sy camo r e). 7. Ac ces s con trol met hod s such as si gnage and/or fenc ing should be uti l ized on trai ls pl anned wi thin natu ral open space or ru ral res idential areas , in order to mi nimize habi tat di sruption . Of pa rticular co ncern is the need to re stri ct Off-road vehicles within grass l and slopes . 8. Bu ffe r zones � set baCKS , easements , and open space shoul d be ut ilized in order to separate natu ral areas from devel opments . This pract ice wo ul d al so hel p prevent invasion of n a t i ve pl ant COTml unities by exoti c 1 andscape v e getati o n and thus pres erve the inte grity of natu ral hllbi tats . 9. Provf s ions sha ul d be de vel oped for the p r e s e r vati on , en hanceme nt and management of sycam ore wo odl and and wi llow r1 pari an areas with; n areas 4-37 zoned Rural Re si denti al A an d /or Ru ral Re s idential C. En fo rcement c ou ld be the responsi b ility of the Mast er Homeow ner 1s As so ci at ion through pl an rev iew and Cove nants, Condi tions and Re stri c ti ons (CC&Rs ). 10. A spri ng bi ol o gi cal re sources survey shoul d be c o nduc te d to det ermi ne the presence or absence of antici pated sensi tive spec i es . Survey emphasi s shaul d al so be pl aced on sens it1 ve h a b 1 tats su ch as sy c amo r e woo dlands . 4-38 4.5 CUlTURAL RES OURCES A cul tu ral res ource s re cord s search and fi el d su rvey were pe rfo rmed by Scienti fi c R eso u r c e Su rveys , Inc. (SRS ) for the p ro p o s ed South Poway Planned C O l1lTl u n i t y are a . The su rvey and re cords se arch were in compl1ance wi th t h e ci ty of Poway e nvi ronmental planning re g u l a t i o n s . The records search co n s i s t e d of co n t a c t wi th the S a n Di ego Mu seu m of Man and the Cu l tural Resource M a n a g eme n t Center. The wal king fi eld survey was co ndu ct ed over ni n e days in Septembe r and was e xp a n d e d by tw o d a y s in De ce mbe r 1984 . The su rvey c rew consist ed of two c o nsu lti n g arch aeologi sts and two arc haeol ogi cal a ssi s t a n ts from t h e Sant a Ys abel and Rincon Indi an R e s e r vati o n s . Work. p e r f o rm e d by SRS, Inc. supp lemented and u p d a ted a p re v i o u s fi el d survey a n d archaeol ogi ca l rep o rt for the site by B r i a n Sm ith, ce r ti fi ed archae ologi st .l Though e n c omp a s s i n g th e ent ire s i t e , the S R S fi el d sea rch emphas ized a r eas of intermi ttent or subsu rf ace streamfl ow and gran i t i c r oc k e xp o s ure s as t h e s e are lik e l y locati ons fo r arche ol o gical si tes . The SRS Cu l tura l Resou rces Survey is co n t a i n e d in Ap pendi x F an d provi des more d e t ai l e d inform a ti o n. An a d d e n d u m to t he ori gi nal report, whi ch incl uded a l i s t of mo di ficati ons to the do c ume nt . is al so co ntai ned in Ap pendi x F. 4.5.1 Existing Condi ti ons AR CHAE OL OG I CAL RES OURCES The re co rd s search re ve al ed that s e v e r a l si tes have be en re co r d ed in the vi ci nity of the project area. A few vi llage sites have been re co rded a l o n g wi th several mi ll ing stations . an h i s t o r i c cemet ery and scatte red arti facts. Fi ve archaeo1 agi cal si tes and an isol at e d arti fact were loc ated du ri ng the f i e ld su rveys of the South Poway prope rty . Three of these s i t e s we re 1 Bri an F. Smi th , Arch aeol ogi cal Stu dy for Bueh ler Planni ng Area , No vember 1982 . 4-39 recorded pre vi ously; two ne w si tes and the a r t i f a c t were di scove red duri ng the SRS s u r v eys and r e c o r d ed . Previ ous ly r e c o rd ed si tes we re g i v e n Ca l ifor n1a Archaeologi cal SHes Inventory (eA-SO;) iden tification numbers and t he two recent ly located sites are tempo ra ri ly r e ferred to as SRS-l and SRS-2. The isol a ted a r t Ha c t is refe rred to as SRS -700-3. Mappi ng of a r chaeo l o g ica l si tes and a site of Nati ve A me r i c an interest has been pro vi ded to the cj ty o f Poway . The sites are de s c r i b e d in the fol lowi ng pa ra g r a phs . CA-SDi -4608 (S yc amo r e C a nyo n Site): Thi s site was re co rded in 1970 and w a s descri bed a s a l a r g e site disp laying ground stone art i f a c t s and be drock mi lling f e a t u re s . Except for the mi l l i n g featu res located just ou ts ide the property bo unda ries, t his site w a s des t royed by m o d e r n re sidential and horti cultural acti vi ty. I ns p e c ti on of the surface a r e a ons ite di d not re veal any v isi b l e cu l tural remains. B e c a u s e the Sy ca mo re Canyon s i t e has bee n descri bed as a l a r g e site next to a d e p e n d abl e "water sou"rce wi th extens ive s u r f a c e scatters of arti facts , it ;s p o s s i b l e that s u b s u rf a c e deposits lie near the base of the h i l l co n taini ng the mi lling feat u re s. The potent ial rema ins of t hi s archaeo logi cal site appea r to be located adj acent to, but of f of the pro p o s e d p r oj e c t s ite . W-3347 (P ow ay Creek site ): This si t e is a lso centered just off of the northern p ro p e rty bou ndary and is a d j ac e n t to Poway Creek at a ca ny on mo u th . This l a rge habi tati on site is cove red by about ei ght f e e t of soi l and res i den ti al d e v e l o p me nt . Groundstone arti facts and mi l l i n g fe atu res were d isc o v e r ed here i n a resi dent ial ba c ky a r d . The fi el d su r vey re v e al e d gri ndi ng slick s on tw o bo ulders about 80 y a r d s south from the expected archaeol og ical si te locus and up t o one mile south , scatte red stone fl akes and a re ma i n i ng co re we r e locat ed . These fi nd ings sugg est a c o nt i n u um of cu l tu ra l ma teri al between thes e food proces si ng s i t e s located up th e c a ny o n and the l arge bu r ied si te at the canyon mou th. It is ve ry lik ely t h at this m ate ri a l wou ld be b u r i ed . Thi s unnamed c anyon d 1 spl ay s the largest c o ncentra ti on of arc haeol og ical sites at t he pro p ose d proj ect bou ndary. 4-40 CA-SOi -7 231 (bo ul der sit e ): Thi s small food processi ng site is located withi n the Buehl er P lann i ng Area about one-ha lf mi le up the same canyon referred to above (W-3347 ). Th is site cons ists of fo ur gri ndi ng s l i c k s and one shal low b e d ro c k mortar p l aced on the 1 e v el su rfaces of two large g r an i te bou lders . In a d d iti on to the re corded mi lling features de scri bed above. the fi e ld su rvey reveal ed th ree un ifac1 al . unshaped manos (hand hel d g ri ndi n g stones used in conjuncti on w i t � g r i n d ing sl i c ks) whi ch lie at the base of the largest boulder. SRS-l: Th is is a scatter of about ten qu artzite and ba salt fl akes exposed in a path about 45 yards wes t of the bou lder site. The exact lim its of thi s fl ake scatter are unknown due to the den se gr ass cover. SRS-2: Located about anoth er o n e -h al f mi le south of the bou lder site and up tne same canyon , a s ing l e gri nd1 ng sl ick was d i s c ove re d on a pl le of ja gged gran ite boulders . Al though no other cu ltural material was obs erved at the surface , a previ ous archaeol og ical reconna issance of the prope rty descri bed the site as a campsi te wi th "l ithic de bris ass oci'ated with bed rock oute ropp in gs • " SRS-700-3: Loc ated on tl'le Beel er Creek f lood pl a i n , tn is isol ated arti fact cons ists of a small nand stone . The di stu rbed nature of th is locati on sugge s ts that the ha nds ton e di d not ori gi nate here. NAT IVE AMER ICAN CONCERNS Juncus : A stand of a large reed , Juncus , located fn Master Plan Suba rea 1, wa s i dent ifi ed by tne I pa; members of the su rvey team. Grow; ng about 275 ya rds down stream and n o r t h w est of a �s ervoi r, thi s stand of Jun cus is probably thri ving on a seep from the reser voi r. Tn is 1 arge reed is used by t�e Ipai in we aving b a s ket s and th is is a tradi tiona l g a t h eri n g area . Wf thi n San Di ego County, th; s pl ant speci es is be com i ng ra re due to gra ding and de vel opment in tile re gion. Thus , thi s stand of Juncus is co nsi - dered a signifi cant cu ltural resou rce to thi s N a t i v e Ame ri can comm un ity. 4-41 PAlEONTOl OGICAL RES OURCES 1 Genera lly, the geologie fo rmat ions on site are not c o nduci ve to foss i l format i on . The grani t i c ro c k s onsite were formed by mol ten mat eri a ls wh ich typical ly do flot co nt ai n any foss il ma teri al . Withi n the Pome r a do Co ngl ome rate and the S tadi um Congl omera t e, t h e large cobb les pres ent du ri ng de posit ion te n d to b r e a k up or crush any fos si ls whi ch may ha ve been pres ent . Fri ars Format ion is not known to be a r i ch sou rce of fo ss ilif erous mat er i al s . About ten mi les south of the p ro j e c t site. a few mo l l u s k fo ssi l s have been rep ort ed in the Fri ars F o rma t i o n . However , fos s ils on the pro jec t site are con s i d e re d unl ikely. G e n e r a l l y . the si te is not consi de red a significant sou rce of pa l eontological re sou rces . 4.5.2 IlIIpacts ARCHAE OL OGICAL RES OUR CES Almost eve ry archae ol ogical s i t e as we ll as the Juncus stand ;s loc a t e d within the prop osed 1 imi ts to grad ing fo r the pro ject . One sit e , the boulder s i te . is just outsi d e a proposed ro ad al i gnment . CA -SOi -4608 (Sycamore Canyon site): The South Poway arteri al al i g nme nt is proposed to ext e n d east-we st acro ss the pro p ert y bo undary nea r Syca mo r e Canyon Road in the v i c i n i ty of this s i t e . Potent ial impa cts inc l u d e d i s r up t ion of poss ible buri ed ma teri al s or the mi lling fe atu res just off; ste. W-3347 (P ow ay Cree k site): Potential a l i g n me n t s of t h e Midland Road ext e n s i o n traverse t his large archaeol o gi cal site . There i s a high potent ial for fu rthe r bu ri e d arti facts wh ich would be re moved or b uri ed du ri ng gra di ng act ivities. 1 Te l ephone conversat ion wi th Michael Chapi n. GE OCON� Inc., Noveroer 1984 . 4-42 CA-SD i-7231 (b o u lde r site ): Thi s food p r oc e ssing site is located just east of the prop osed al i gnme n t fo r the Mi dl and Road extension . The bou lder sHe 11 es wi th in the ru ra 1 res 1 dent 1a 1 (RRC ) 1 and use des 1 gnat ion and coul d be impacted by res ident ial construction. SRS -l : Thi s fl ake scatt er may al so lie with in the pro pos e d a l ign ment for the Midl and Road ext ens ion. Grad ing and construction co uld dest roy or b u ry th is si te . SRS-2 : Th is grinding sl ick a nd campsite is l o c a t e d just ea st of the pro po sed Mi dl and Road ext ens ion al i g n ment . but co uld be i mpa c t ed by gradi ng for adj acent industr ial l a n d use . SRS-7 00-3: S i nc e th is i s ol a t e d arti fact is nat l fKe l y to be located nea r its ori gi n, no impacts to archaeol og ical reso urces are anticipated at thi s location. Offsite co nstruct ion ac ti vity (eg •• st reet and uti lity extensi o ns ) co uld resu lt in indi rect impacts to any archaeo logi cal reso urces wh ich may be located in su rro und i n g are as . NATI VE AMER ICAN CON CERNS The stand of Juncus ;s l o c a t ed just ea st of the proposed cOlT11luni ty road e xt e n s i o n . Though located with in proposed open space , this stand may be imp ac t ed by grading at the de vel opment edge for indust ri al land use�. Al so. grad ing for the industrial area co uld alter natu ral drai nage pat te rn s outsi d e the act ual co nstruction area . the reby re su lting in i nd irect impacts to the reed st and . PALEONTO LOG ICAL RESO URCES No pal eontol ogi cal resources are li kel y to be encount e re d and no s1gni fi cant impact ;s fo reseen . 4-43 4.5.3 Mi t igation Meas u�s In o r d e r to red uce potent ial cul tural res ource impacts , the fol lowi ng mi t i gat ; on me asures are r e c onrne n d ed as part of the tentati ve map/devel opment re view or road improvement p l a n level of development proces sing. 1. CA-SD i -4608 (Sycamo re Canyon s i te): An au ger sho ul d be used to test for the pres e nce of s u b s u rface cu ltural m aterf a l' between the hi ll on the n o rt h . Beel er Creek o n the south . and Sy camore Canyon R oad on the east . If subsu rface c u l t u r a l materi al ;s p r e s e n t . the s i t e sho uld be te sted fu rt her wi th a seri es of hand e x c a v a t i o n un its . 2. W-334 7 (Poway C r e e k si te): Sy stemati c al ly ex c a v ated au ger hol es should be pl aced s t r a t e g ica l l y across the mouth of the canyon to test for the presence of ad ditional ·subsurface deposi ts . If subs u rfa c e cul tu ral materi al is p r e sent , a series of hand. exca vati on units sho ul d be du g to t e s t the de p o s i t furt her . 3. CA-SDi-7231 (bou l de r site): If p ossi b l e . the bo u lder site as a rel a ti vely intact fe at ure shoul d be avoided and l e ft in pl ace d u r i n g fut Ure devel opment of the subj e ct pro p e rty. A l t e r n at i vel y. a photo dac umentat �on . mapping and re c ord a t i o n of th is featu re shoul d be com p l e t ed in c o n jun c t i o n wi th any de vel opme nt p r o c e s s i n g within the RRC a re a . In a d d i t i o n , a mi ni mum of th ree o n e -m e t e r by on e-meter u ni t s sho ul d be e x c a v a t ed near the eastern (down sl ope) base of the bo ul der p i l e to tes t fo r subsu rface materi al s. s u gg e s t e d by t he occ urrence o f isol ated a rt i f a c t s 1n prox imity to the bou lder site. 4. SR S -l : The grass s h o u l d be removed a n d the fl ake scatter shoul d be map ped u s i n g a tra n si t , then su rface col lected.. In a d d i t i on , one o n e -m ete r by one-meter ha nd exc a v a t ion un1t shou 1d be d u g in the center of the s ite to determi ne if s u b s u r fa ce cul tural mate rial exists . 5. SRS-2: If po ssi ble, the boul d er cont aini ng t h e sl ick s h o u l d be avoi d ed and left in p l a c e during de velopme nt . A o ne-m e t e r by one-meter h a n d excavat ion un it s h o u l d be pl aced next to the bo ul d er to de termi n e if a subsu r f a c e d e p o s i t ex ists. 4-44 4.6 LAND USE 4.6.1 Exi sti ng Condi ti ons ONS ITE The maj o ri ty of t h e proj ect site is c u r re n t l y ru ral . unde vel oped , and vacant . A few res i dences a re scatte red al ong the southwe ste rn proj ect b oun d a ry in Suba rea 5. Grazing of li ves toc k is co ITI1JO n on the h i l l si d e s and a few stock-w ateri ng p o n d s are p r e sent . A few di rt roads t r a v ers e the ri d g e l ines . Recreat ional act; vi ti es on the si te are not frequent but peop le occas ional ly use the pro pe rt y for hors eback ri di ng , off-road ve hi cles, shoo ting. a n d hi king. Padre Transit ;s a small mi ni ng o p e r a t i on cu r rent ly mi ni ng and p r o c ess i n9 aggregate al ong the sout hern p r o p e rty border in Subarea 5. The p r o j e c t property is de s; gn a t e d for Pl anned Commun ity (PC) devel o pme nt in the city of Poway Land Use El emen t. Prior to fu rt her spe c i f ica t ion by the project proponents , thi s area wi ll ret ain t h e ci ty 's ba se land use desi gn ati ons which are listed in the f o l l owi n g .table. Ta ble 4 EX ISTING LAND USE DES I GNATI ONS App rox i mate Acres Per Des i gnati on Ac reage Owe 11 i n g Un i t 1 Rural Resident1al-A 2,218 4 , 8, 20 . or 4 0 Rura 1 Res i de nti al -C IH2 1, 2, o r 4 Under these 1 and use desi gn at; on s a m a ximu m of 260 dwe ll ing uni ts are per mitted wi t hin the p roj ect pro p e r t y . Howe ver , with t h e ove rl ay ing PC des ig n at ion , the proj e c t proponents may propo se and defi ne land uses wi t hin the prope rty bo und a r i es . 1 Mi nirrum lot s i z e s are de termi ned by a v e r a g e sl ope and cOlTlllunity wate r servi ce avai labi l ity. 4-46 SUR�OUN D ING A va ri ety of land uses su rround t he project property . D evel opment wi t h i n the city of Poway lies adjacent and to t he north of the p r o p e rty . devel op ment w i thin the c i ty of San Di ego lies to the we st . To t h e south and eas t i s vacant land wit hi n the city of San I)i ego limits and the c ounty of San D i e go limi ts . res pecti vely � A c o unty of San D i e g o island ap proxi mately 400 a c res in s i ze 1 i es t o the sou thwest betwe en the ci t 1 es of San 01 ego and Poway. Land u s e to the north and west is re s1 denti al , wi th de nsities ra ngi ng from U.25 to 8.0 dwe 11 i ng un; ts per acre. The v a c ant 1 and to the south and east is pri ma ri ly Nava l R e s erv e property. A General Dy nam i c s mi ssi le devel opment si te is l ocat e d south of t h e prope rty . Ammun ition bunkers on the s i t e are st i ll vi si b le. Exhi bit 7 ; llust rates land uses a cc ord ing to the c i ty of Poway and city of San D;ego Gen eral Pl a ns. R EGI ON AL la rge amou nts of land desi gnated as re si dential, c O lTlTl e r ci a l . and indus tri al ex ist w ithin the north co unty area (Ta ble 5 ). Within indi vi dual com mu ni ti es , however , not al l uses are rep re sented . For e xam p l e , wi t hin th e ci ty of Poway . lit tle land is cu rrent ly des i gnated for industrial use and cOl1ll1erc;al use . Ta ble 5 illust rates the pe rce ntage of land de s i g n a ted fo r commercial and indu stri al land u s e s within the re gi on and in indi vi dual communi ties. Mi ra M es a has de S i g n ated thi rty percent of the co rrrnuni ty's t ot al acreage to industri al land uses . Six to e i g h t percent is more preva 1 ent . A s h o r t a g e of land fo r industri al de v el opment ex ists in t h e cou nty as a whol e. In pa r ti cu lar, a shortage of large p a r c e1 s of 100 a c r e s or more of industri al land is in short supp ly, especi ally in the I n ters t a te 15 vici nity. La rge comme rci al parce l s are avai lable.l 1 Op portuniti es and Constra ints Rep ort: Buehler Pl anni ng Area , PRe Toups, M a r ch 1983 , p. 10. 4-47 Ta ble 5 INDUSTRIAL AND COMMERCIAL LAND USE ALLOCATI ON Ci ti es: Carl sbad Ran cho B e r n a rdo Oceanside San Ma rcos V i sta E s c o n d ido De l Ma r Poway C o nrnu n iti e s : Mi ra Mesa Canmel Mountain Ra nch Scri pps f\1i rama r Mi ramar R a nc h No rth Sabre S pri n gs Penas q u 1 t o s East San Oieg uito No rth County Total Pe rcent of Total Ac res Industri al 16 10 8 8 4 3 2 0.2 30 7 7 6 3 o o 6 C o mmerc i a l 4 3 9 3 4 3 2 1 .4 6 47 1 1 1 2 2 3 Several re gi ona l transportat ion st u d i e s incl ud ing the SA NOAG Route 125 North Locati on A n a l y si s (s e e Section 4.9 TR A FFI C AND CIRC ULAT ION) and ot her SA NDAG forec asts indi cate a re gional need fo r an east -west tre n d ing arterial to prov ide linka ge to e x i s t i n g ma jor transportati on art erial s whi ch run north-south . Loca l and re gional agenci es ide n t i fy a ne ed for thi S link . 4.6.2 IlIIpacts Implementat ion of th e Pl anned COl1JT1unity proj ect wou ld invo lve de vel opment of re si denti al , cOllJTlerci al . and industrial land uses wi th associ ated road ways . and re t ent i o n of open space are as . The proposed proj ect wou ld des ig n ate Ru ral Resi dential . Singl e Fami ly Res i dential, Res i d e n t i a l Mobi le Homes . Corrrnercidl /Offi ce . Industrial Park. li ght I n d u s t r i a l . and Open Space land u s e s (see Table 1 in Sect ion 3.5 PROPOSED COMMUN ITY PLAN ). ONS ITE Resi den tial devel opment at g re a te r than one unit per acre and pa rticul arly de vel opment of i n d ust r ial and cOfmlerci al land uses wi ll alter the ru r al 4-48 ':'.- character of the proj ect site. Requi red re creat ional uses on t h e proj ect prop erty wi ll be de ve l oped in consu ltation with the city CormJun ity Ser vices Dep artme nt . SURR OOND I NG The proj ect wi ll provide buffer areas of open space, ru ral res ident ial and resi denti al l a n d uses betwe en s u rro u nd i n g land u s e s -a nd conmerci al /indus tri al devel opme nt wi t hi n the ce n t r a l p o rt ion of the property . Thes e "buf fe r" uses are cons idered com p a t i bl e wi th surrounding re s i d e n t i a l and v a c a n t land. Sl ight incompatibi lity may re su lt at the propos ed single fam ily r e s ide n t i a l (S F-2 ) de ve l opment and exi st ing surroundi ng vacant land interface. P ote n t 1 a l for incompatible fu ture land uses oc cu rri ng in the v a c ant areas' to the south and east of the proposed project prope rty is mi n imi zed by the ope n ,s pace bu ff er wi thi n the p r oj ect . Ex; st f ng vf ews of the pro p e r ty wi ll be altered and gl are and light i m p a c t s to exi st ing res i den ces i n Subarea 5 are not likely to occu r s i n c e the indus tri al /co/Jlne r cial are as are cl u s t e re d in the cent ral areas of the site. REGI ONAL A pri mary obj ecti ve of the proj ect is t o prov ide emp l oyment op portuni ties in an area with a weak emp loyme nt b a se . Implem entation of the p ro p o s e d project w o u ld provide 28 ac res of land fo r conme rci al uses and 644 acres for light i n d u s t r i al uses . T h i s wou ld stre n gt hen the proporti on of e m p l oy ment-gene rating land uses in the c i t y of Pow ay an d in the No rth Cou nty re gi o n. A second ob j e ct i ve of th e proj ect is to provide a re g ion a lly needed ea st west transportation linkage. Implement ati on of the proposed proj ect would create a c o nn e ct i n g 1; nk . the South Poway Arter1 al bet w ee n Interstate 15 an d St ate Road 67. Currul at i ve IIIJlCl ct s . Cum ul at i ve impact s to l a n d use wi t hin th e proj ect area incl ude a ge ne ral ch ange in ch aracter in the area u n d e ve loped to devel oped. Open space and g r a z i ng lands wi ll be incremental ly co nverted to resi denti a l, i n d u s t r i a l and conwnerci al land uses . The a re a wl ll con - 4-49 tinue to de vel op al o ng ttle major eas t -we st arteri al s, with opportuniti es for vehi cu lar acce ss. The c u rrula ti ve effects of li ghting from urban land uses wi ll add some ref l ect ion and gl are, part icularly to the ni ght sky . Proje ct Al te rnati v es . The hi gh i nte n s ity Al terna ti ve (3 ) wi ll have impacts similar to those of t h e proposed proj ect but of g r e a t e r ma g ni tu de since Al ternat ive (3 ) di ffers pri ma r i ly by a larger numbe r of res i den ces and by an i n c re a s e o f 35 ac res of industri al l and uses . The low intensity Al ternat ive (1 ) impacts wo uld di ffe r due to the lack of industri al or com merc ial land u s e . In addi tion, the re is no potent ial for incompa ti b il1ty between si ngle fami ly des i gnat ; ons and va cant land because the en ti re si te is d e s i g nated for ru r al res i dent ial use. 4.6.3 M'tigat ion Mea sures 1. The 'p roject wi ll comp ly wi th ci ty of Poway po l i c i e s re gardi ng shi el ding and d i r e ction �f li ghting and refl ecti vity of bu ilding mat eri al s to mini m ize ref lect ion and gl are. 2. The proj ect shal l comp ly wi th ci ty of Poway Gene ral Plan p o l ici e s wh ich p r o v ide for emp l oyment -generat ing land uses in the Bue hler Planning Area (South Poway P l a nne d Commun ity area ). 4-50 4.7 SOCI(l:C(MCJ4ICS 4.7.1 EXi s ti ng Condi tions The proposed South Poway Pl ann e d COlTlTlunity 15 l oca t ed in th e Poway Subre g i onal Area (SRA 15) in the N orth C ity Major Stati sti c al A r e a (MSA 1) of the San Di ego Rp.g ion (see Exhibi t 14 ). In Jan uary 1984, Subregi o nal Are a 15 had a popu lation e s t i ma t e of 48 ,246 a n d 16,095 hous ing un its. The p op u l a t i on i ncreased by 12.9 percent si nce 1980 fro m 4 2 ,7 30 and th e number of h o u s e h o l d s increa sed by 10.0 pe rcen t from 14 .639. In 1980. the area had a total emp loyment o f 1 5 ,266 . E m p l oyme n t est imates for January 1984 are not readi ly avai lable.1 The N o r t h City MSA had a 1980 p o pu l at i o n of 436,32 7. 161 ,223 househ ol ds and 2 2 1 .7 26 civil ian emp loyees . Regi onal grow th forec a s ts for these areas are comp leted by the S a n Di ego Associ ation of. Go vernments . The MSA has a c i v i l i a n emp l oyme nt mix of 31 .4 pe �cent in basi c industri es (e x p ort i n g ) and 6�.6 percent in a local serving emp l oym ent . Th ese data co rrespo nd to 137 .0 jobs per 100 households.2 ·T he 1980 esti ma t e s for the ci ty of Poway, wh ich incl udes on ly a p o rt i on of SRA 15, was 33,178 perso ns, 10,716 hous ing uni t s and 11 .168 e mp l oy e es . In Janua ry 1984 , th e es t i ma t e s fo r th e city of P ow ay are a population of 35,454 and 11,261 hous ing u n i ts . From 1980 , the population i n c r e a s ed by 6.9 p e r c e n t and the number of ho us ing u n i t s by 5.1 p e r c e nt . Therefore, the growth ra tes are much l ow e r for the ci t y of Poway than... the ent; re Poway SRA . E mp loyme n t es ti ma tes for J a n uary 1984 are not re adily avai l a bl e .2 C amp a ri sons of t h e popu 1 a t i on and ho u s i ng growth rates from 1980-84 for the fou r g eograp"h i cal areas are shown in Tabl e 6. As shown , the city of Pow ay has the lowe st growt h r a t e s of the fo u r are as .3 1 S a n Di ego R e g i o n 1983 E mp loyme nt Estimates and J a n u a ry I, 1984 P o pu la ti on and Housing Estimates, San D i e g o Associ ati on of Gove rnments , July 1984 . 2 San Di ego Regi on 1980 Emp loyment I n v e nt o ry and Re giona l Growt h Forecas ts 1980-2000 , San D i e g o Associ at ion of Governments . 3 San D i e g o Region 1983 Esti mates . 4-51 Tabl e 6 1980-84 GR OWTH RATES 1980-84 Percentage Increase POQulati on Hous ing Uni ts City of Poway 6.9 5.1 Poway (Subregiona l Area 15) 12.9 10 .0 North City Ma jor Stati sti c al Ar ea (MSA 1) 8.8 6.3 San Di ego Reg ion 9.6 5.9 Witl1i n the c i ty of Poway, the South Poway Pl anned Comm uni ty is located in the South Subarea , and wi thi n Census Tract 170.11 . Only three census tracts (170 .10-170.12) are within thi s subarea . Det a iled popu lation, ho us ing and inc ome data are avai labl e from the U.S . Census and are incl uded in the Housing Need s Assessme nt Report, comp leted by Phel ps Comp any and Van Del l and Associ ates fo r the city of Poway in Decemb e r 1982. The re port compi led data on land u ses , popul a tion, househ ol d and hous ing stock characte ri stics and market analysis trends in the city. The rep ort ;s avai labl e fo r publ ic revi ew at t h e ci ty Pl anni ng Services Oepartment . Growt h Foreca sts The San Oi ego Ass oci at i on of Government s comp 1 et es gr owth fo recasts for ma jor s t at i s t i c a l areas in the regi on . Tabl e 7 surrma rizes the proj ecti ons for MSA 1 (N o r t h Ci t y). The South Poway Pl anned Connnunity wo u ld lik.ely be devel oped by 1995 -2000 . The popu 1 at; on of MSA 1 may increase by approx; ma tely 211,000 from 1980-2000 o r 2.4 pe rcent annual ly. The number of housi ng uni ts and ci vi lian emp loyme nt may grow by 2.8 percent and 2.2 percent , re spec ti ve ly. The growt h proj ect ions en vi si on app roxi mately 1,500 ac res of land bei ng de vel oped annual ly from 1980-2000 . Approxi ma tely 1,100 acres of res iden ti al land are projected for de vel opment annually. 4-52 Legend _CITY OF POWAY lm!tSUBAEGIONAL AREA 16 !IIIJtMAJOR STATISTICAL A REA 1-NOR'ni CrTY SOURCE! SAN OIEGO A8S0CIATION OF GOVERNMENTS Statist ical Areas SOUTH POW A Y PLANNED COMMUNITY EXH'B'T 14 ".fC � _r-;,.. � � ,-- \ \ \ \ \ " ,�. �, Legend 18 -Link Number ·------Pr� ----M.P -----s.ca-V -.-._.--CcM'-ctor City of Poway Circulat ion El ement SOUTH PO WAY PLAN NED COMMUNITY .... -. , . I I .' I I I I I ! i / ( �. SOURCE: KUNZMAN ANO ASSOCIATES EXHIBIT 15 Tab 1 e 7 REGIONAL GR OWT H FORECAST: MAJOR STAT ISTICAL AREA 1 -NORTH CITyl 1980-2000 1980-20UO Numeri c Pe r cent 1980 1990 2000 Change Change Tot al Po pulati on 436 .327 549 .835 64 6,888 210,561 48 .26 Oc cupi ed Ho usi ng Uni ts 161,223 206,852 253,086 91 ,863 56 .98 Hou sehol d Si ze 2.64 2.6 0 2.51 Tot al Civi lian Emp l oy ment 22 1,726 279,847 320,776 99 ,050 44 .67 Tota l Un i fo rmed Mi l itary 9,566 9 ,3 9 1 9,391 -1 75 -1 .83 To tal Ac reage 182,580 182,580 182.580 0 0 Developed Ac reage 53 ,865 70,859 83,618 29,753 55.24 Re si denti al Ac reage 32 ,851 46.310 55,204 22 ,353 68.04 Non-Res i denti al Ac res 17,674 2 0 ,91 2 23,417 5 ,7 43 32.49 F r ee wa y Ac res 3,340 . 3,638 4,997 1.657 4 9 .61 Vacant Ac reage 128,715 11 1.721 98 ,962 -29,753 -23.12 4.7.2 Impacts The South Poway Pl an ned Commu nity proposes 272 dwel ling un its on 887 a c r e s (0.3 du/acre). Ba sed 011 a projected fac tor of 3.0 pers on s/du, t he proj ect wi ll have a popu 1 at; on of 816 at bui l dout . The greater impact of the project is on increa sed area empl oyment opportuni ti e s. �ased on an estima ted si te c o v erage ratio of 33 percent , the 644 indust ri al acres may gener ate approx i ma tel y 12,300 em pl oy ees and the 28 acres of cOlTlTle rci al /off1ce use may generate 900 emp l oyees .2 Th erefo re , at bu i ldout . the proj ect may generate 13,200 emp l oye es . 1 Com pi led from Fi nal Seri es 6: Re gi onal Growt h Fo r ecasts 1980-2000, San Di ego As sociati on of Gove rnment s. 2 Ba sed on 33 percent 5i te cove rage , 750 square fe et pe r empl oyee fo r i nd ustri al use and 450 square fe et for C:OI1IT1e rci a 1 /offi ce use. The se facto rs co rrespond to 19 empl oy ees/ac re fo r i n d u s t ri a l use and 32 em p l oy ees per a c re for commerci al /offi ce use . 4-53 Compari ng these proj ect i cns w; th the data for MSA 1 ; n Tab Ie 7. assumi ng the p r o j e ct is compl eted be fo re y e a r 20 00, i n d i ca t e s the proj ect may r �p re sent app roxi mately 13 p e r c e n t of t h e proj ected 1980-2000 c i v ili a n empl oy ment g row t h ; n MSA 1 but 1 e s s than one percent (.00 5) of the popu 1 at i on i n c re a se ; n the s a me per; od . T h ere fore , the s; gn11; cant imp a c t s of the proj ect are re lated to e m p l oym ent gr owth and its re lated i m p a c t s . The re lated impacts of traffi c, ai r qu al ity. and n o i s e are di scussed in ot h e r sect ions of th is re port. The es ti mates i n cl u d ed in the 'S e r i e s 6 Forecast for th e p ro j ect area are based on t h e cu rrent 1 and use des ; gnati o n s of the Gene ra l Plan. Estimates ba sed on the c u r r e n t desi g n a t i o n s resu lt ;n pro ject ion s of 260 dwel ling un its and a popu l a t i o n of 863 . INCOME The labor force ant i c i p a t e d to be emp l oyed by b u si n ess es wi t hi n the South Poway Pl a nned Corrwn unity wi ll likely have incomes c o m p ara b l e to the met ro pol itan S a n Di ego a r e a. Ta bl e 8 lists s e l e cte d occ upat ions and avera ge mo n t h l y wa ges for the San Diego area . Tabl e 8 MET�O POL ITAN SAN DIEGO SA LARY SURVE Y -1984 1 (M o n thly Base Rates for S e l e c ted Occu pat ions ) Clerk Typist-I Cl erk Ty pi st I I Data E n t ry O p e r a t o r Stenographer Grou nds C are t ake r Laborer Accountant Cl inical laborat ory Technol ogist Dra ft i n g Techni c ian El ect ro nic Computer O pe r a t or E n g ine e r Sy stems Ana lyst/Programmer Custodian Food S e r v ice Wo rker Auto/Equi pme nt MeChanic Average Mont hly Wage 2 $ 1,144 1,250 1,235 1,54 5 1,1 25 1,4 34 1,9 35 2,268 2,076 1,660 2,621 2,374 1,284 985 2,157 1 Met ropol itan San Di ego s a l a r� S u r v ey . March 1984 , c i t y of San Diego Ci vi l Service Commi ssion and an D i e g o City School s Compensat ion Admi n istrat ion Depa rt me nt . 2 Wei ghted average for ba se rat e s for mon thly wa ges for a 40-hou r wee k and a 173.33-hou r mo nt h. 4-54 4.7.3 Mi tigat ion Mea sures No miti gat ion measu res are re qui re d. 4-55 4.8 FISCAL ANALYS IS The fi sca 1 ; mpact of the South Poway Pl anned COlTJOOnity upon the cHy of Poway was eval uated in a fi scal impact analysis prepa red by Pu bl ic Affai rs Consu l tants in Novembe r 1984 .1 A brief summary of the fi scal impact ana lysis is provi ded be low. The di s cussi on descri bes the sc ope of the re port, states the re port 1s con cl usi o ns and re iterates the ma jor assumpti ons used in the a n a l ys i s .2 Scope of the Repo rt The fi scal impact an alysis comp ares the effect s of the proj ect on the C i ty 's operating re venues and expend itu res for each of the th ree alterna ti ve land use pl ans -incl uding the medi um concept whi ch is the subject of thi s EIR . The ana lysis al so proj ects the prope rty t ax increments avai l able to the Poway Red evelopment Area wh ich wi ll be a v a ila bl e to fi nance capital impro veme nt s. (The proj ect is located wi th in thi s redevel opment di s tri c t.) Projected 'city re venues and op erat ing costs are ba sed on ana lys is of the fiscal yea r 1984-8 5 budget . The analySis incl uded al loca ti on of i ndire ct and o v e r h ead costs to di rect serv ice acti vities of the C i ty . Reserve-Cost Su..ary The projected cos ts and re venues fo r each land use pl an we re sUlT1T1a ri zed in four-y ear i n t e r v a 1 s. Of the th ree a 1 te r na ti ves, the prop os ed medi um 1 and use al ternat ive concept is t h e most cost effe cti v e; the ra t io of re ve nues to costs is consi stently greater than the ot her alternati ves . The med ium 1 The fu ll re port is avai labl e fo r re vi ew at the fo llo wi ng addre ss : Planning Servi ces Depa rtment , city of Poway. 13202 P ow ay Road . Poway. Calif or ni a 92064 . 2 S tate and cau nty CE QA gu 1 de 11 nes do not requ ire anal ys is of ecanomi c or fi scal impacts in an EIR. 4-56 concept land us� a l ternat i ve has net fi scal impact of $941 .345 in 2002 (y ea r 16). The re venue-cost r a t io for this alternat; ve ranges from 1.52 to 1.57. B ot h re venues and co sts we re proj ected in 1984 dol lars to assess the re ven ue-co st rati o. Tab 1 e 9 COMB INED OPERATING FUNDS COSTS AND REVENUES Proposed Proj ect Year 4 Ye ar 8 Ye ar 12 Year 16 Reve nues 524 ,639 1,2 32 .487 1,91 1,983 2.598,666 Costs 344 .036 7991840 11250 J 999 11657�321 Net Imp act $' 180,602 $ 432 .647 $ 660 .984 $ 94 1 ,345 Revenue-Cas t Rat io 1.52 1.54 1.53 1.57 Sou rc e: South Poway Pl an ned C ommun ity Fi scal Impact A nal ys is. Pu bl ic A fta ; rs Consu ltan ts , San Diego. No vembe r 1984, pa g e 1-5. In the j ear 2002 , the med i um concept may prod uce a p r o pe rty tax increme nt of $8 ,322 ,018. If 2 0 -y e a r bo nd s ha ve an avera ge intere st rate of 10. p e r c e n t , the med ium con cept al t ern a t i ve may support up to $112.8 mi llion in de bt . Thes e fu nds may be used to fu nd capital improveme nts in th e re devel opment area . The annual re ven ue project i ons for the med ium c o n cept al ternati ve al so exceed the prOj ected a n n u a l expend itures for ea ch y e ar from 1986 to 2002 . Majo r Study AS 5u�tions Th e report ut i li z es the per capi ta . servi ce s t a n d a r d and average co st me t h od s . the tra d i t i o n a l me thodo logies e l1llloy e d in fi scal analysi s. The phasing as s umpti ons and val uati on as sump ti ons are k ey fa c t or s in any fi s cal ana lysis. A the pe rcent appre ci at ion rate for both land and improve m e n t s an d an an nual tu rn over ra te of ten pe rce nt f or re s identi al property were assumed in p roj e ct i n g . re ve nues fo r the b o n d i n g c a p a b i l i ty of the redevel opment agen cy. Rev iew of the bas ic va l uation a ssum p t i o n s, as st ated in the rep ort by city staff , is al so appropri ate . 4-57 : ."� _'... :� .. �... . .. . �,.. .' ....... " .. In ad di tion to the prop osed South Poway Art eri al con nect ion to P o me ra do Road, an addi ti ona 1 co ll ecto r-l evel entry has been concept ual ly prop o s e d from Pomerado R o a d to the proj ec t 's No rt h Loop Road. The al i gn me n t wou ld fo l low the major eas t-west cany on d r a i n age in S u b a r e a 1. i n te r s ect i n g Pom erado Road sou th of Met ate Roa d and an ex isting su bdi vi sion . Pomerado Road is a n o r t h -south roadway wh ich extends from Mi rama r Ro ad at I n ter s t a te 15 to Hi ghl and Val ley Road at Interstate 15. Pomerado Road is clas sified as a major arteri al on the city of P oway Ci rcu lation Element . It cu rren tly se rves app rox imately 9,000 vehicl es per day south of Poway Road . P oway Road is an ea st-we st ro adway wh ich ext en ds from Rancho Penas qu i tos Boul evard at Interstate 15 to R o u t e 67 . Poway Roa d is cl a ss i f i e d as a maj or a rte r i a l on t�e city of Poway Ci rcu l ati on E leme n t. West of the ci ty of Poway , the road wi ll be improved to pr;ni ary arteri al standa rds in co njunct ion with Sabre Spri ngs deve lopme nt . Within the ci ty. it c a rri e s approxi mate ly 32,000 v e h i c l e s per day between P o me r a d o Road a n d Carri age Road , and about 3!:>,OUO veh i c l e s pe r day bet ween Carriage R o a d and Mi dl and Road . Ta bl e 10 INTERS ECTI ON CA PAC ITY UT ILI ZAT I ON ! A .M . P.M. Intersect ion leu LOS 2 leu LOS Poway Road/Pome rado Road .80 D .82 0 Pome rado/Met ate3 .43 A .50 A Poway Road/Commun ity Road .63 B .85 0 Poway Road/Gard en Roa d .31 A .60 A Garden Road /Sycamore Cany on A A 1 S o u rc e : Buehl er Pl anning A re a Traf fi c Overview; Federhart & Associ a t es . Janua ry 1983 . 2 Le ve l of Servi ce : A :: f re e f1 ow� Be stabl e fl ow/sl ight de lay; C = sta ble fl ow/acc e p t abl e d e l ay � 0 � approach ing unstabl e flow; E - unstable fl ow/conges tion . 3 Assumes tw o nort hbound lanes on Pomerado app roaching Met a te . 4-59 Th e intersect ions of Poway Road with Pome rado Road and Conmun ity Road are very nea r capacity. The remaining key poi nts do have capacity avai lable. Con gest ion at the Poway/CormlUnity intersection occ urs pa r t l y beca use peo ple entering Poway from t h e sout h on Pome rado R o a d use the Metate Lane /Com rrunity Road link to by pas s the Poway/Pome rado intersection. It is di f fi cu lt t o improve th is intersect i on be cau se of devel opme nt on the west si de of Commu nity Road and a deep drainage ch annel on the east side. The proposed South Poway A rt e ri a l is shown on the c i ty of Poway Circu la ti on El ement as an ea st-west secondary wh ich tra ve rs es th is area . Interstate 15 is c u r re n t l y experi enci ng a si g ni ficant inc rease i n traffi c v o l u mes with the devel opment of several ma jor new pl a n n e d commu ni ti es along the co rridor. Subs tant ial i n c r ea s e s in fu ture traffic are proj ected re ga rd less of whi ch Route 125 Al ternate is ul timat ely devel oped. A ra nge of traffi c operational imp rovements are ei ther cu rrently prograrrmed or ultimately anti cipated as needed to meet traffic vo l umes in t h e 220-240,000 average w e ek d ay (A DT) ra nge. In g e n e r a 1, the fol low; n9 observ ations are made concerni ng re gi ona 1 con d; ti on s: 1. Land uses th ro ughout the 1-15 re g ion are su ch that traffi c leaves th is area in the m o rn ing and retu rns in the even ing, creat ing a s1 gn ifi cant imba lance in pe ak hou r fl ows . 2. Ma jor roa d s in Sabre Spri ngs (incl udi ng Poway R oad ), Mi rama r Ran ch North, and Rancho C a rm e l wi 11 be near ca paci ty if develop me nt proceed s as pl anned , as wi ll I-IS and its interch anges . 3. Congesti on on Poway Road , Pome rado R oad and maj or inte r secti ons on the roa ds wi ll cont inue if a d d t t i o n s to the ci rculati on sy s t e m are not ma de . 4-60 ",,' :.... .' .. �.'� Ci rculation Elements Exhi bit 15 fllust rates the cu rrent city of Poway Ci rc ul a tion El ement . This fi gure sh ows the natu re and extent of exi sting and prop osed arteri al hi ghways wh i ch are ant i ci pated to serve the ulti ma te de v el opment depi cted by the Land Use Element of the city Gene ral Plan (refer to Section 4.6, LAND USE ). Tabl e 11 shows key roadway segmen ts wh ich are ana lyzed as pa rt of the traf fic study, and iden ti f ies the master planned clas sificat i on for each 11nl< based upon the ci ty of Poway Ci rcu lation Element . Tabl e 11 POWAY MAS TE R PLANNED ROADWA Y CLASS IFICAT IONS li nk No . 33/34 39 15/19/20/22 21 49 3 0/7 18 4/5 Roa dway South Poway Art eri al Sy camo re Canyon Road Poway Road Ga rden Road Midl and Road ComrocJnity Road Metate Road Po me ra do Road I nters tate 15 Cl ass Hi cat ion Secondary Seconda ry Maj o r Seconda ry Secondary Sec onda ry /Major Secondary Maj or Freeway Maximum dai ly vo l ume s for roa dway classificati ons are illu strated in the fo ll ow ing tabl e. Class ifi cat ion Loca l Colle ctor Seconda ry Major Primary Freeway * VPD = ve hicles per day Table 12 ROADWAY CAPAC ITIES De scription Two Lanes Undi vi ded Two Lane s Un di vided Fo ur Lanes Undi vi ded Four Lanes Di vi ded Si x lanes Di vided Ten La nes Di vi d ed 4-61 Dai ly Des ign Capac1 ty* 6,000 VPD 10,000 VPIl 20 ,000 VPD 30,000 VPD 45 ,000 VPD 175 ,00U VPD ... _ .. ' ... '.' ... :. � ,.. U en , •. �.' ::. -:I�... � .. . . '. " ,.. 0 • - u.. CfI .. (II' .! • .. • SA 770 Legend __ 'Fr� •••• Prime Arterial. --. MllJor Ra.ds --. Col lector RaIKIs -_. RUNII Col lectors • • • • Light C� lector. .. ' � ... ,�.: .. '.� ..... ..:.....-� ........... . r SOURCE: KUNZMAN AND ASSOC IATES San Diego County Circulati on Element SOUTH POWAY PLAN NED COMMUN ITY EXHIBIT 16 Al ternat ive 11: The A l t e r n a t i v e 11 roa dway netwo rk is s imi lar to th e A 1 ter n a t ; ve 10 sy stem except t h a t the sect i on of Route 125 in t h e ce nt ral Poway area has bee n do w n gra ded to a fou r·lane expre ssway. Alternat i ve 12: The A l t ern a t i v e 12 sy s t e m is s imila r to the Al t ern ati ve 8 n etw o rk e xc ept tha t the e x t e n s i o n of Route 125 so uth of the S o u t h Poway Arteri al is de l eted. For each of the f1 ve SANDAG a lternati v es , total roa dway vo l urnes for vari ous roa dway s e g me n t s we re as si gned wh i ch ref 1 ect t h e ho ri z on y e a r (Exh i - bi ts 17-21). Next , us ing the number of tri ps to and from the p roj e c t site (SANOAG Subzon e s 865 to 86 7. 882 , and 891 to 895) v o l u m es contributed by the proj ect to ro adway segments s urr ou ndi n g the s i te we re as si gned . These "se lect zone assi gnme n ts" as w e ll as total a s si g n ment vol umes are t a b u l a ted in the Kunzman re port. Alternat i ve Modes of Transportatfon Transportat ion al t ernat ives to the c o n v e n t i on a l automobi le incl ude the us e of bikeways , equestri an tra i l s . pedestri an faci liti e s. and p u b l i c transit. Th e ci ty of P ow ay Ge neral Plan p o l i c i e s provi de fo r these al tern a tive s. COlllTlensu r ate with P ow ay 's rural /ranc h character, t h e city's Mast er Pl an of T r a i l s provi des for an ex t e n s i ve netwo rk of re g i ona l J corrmu nity and loca l tra i l s for p e d e s t r,i a n and equ es trian use . Several reg i o n a l trai ls tra verse the proposed pro jec t site incl u di ng on e trai l a l o n g Pome rado Road/ Beel er C a nyon and one w h i c h fo l lows the South Poway Arteri al al ignment . Devel ope rs are encoura ged to ded icate ex isting trai ls . The city's Mast er Plan af Bikew ays was desi gned to encourage b i cy c l ing as an al ternati VE! me a n s of t r a n s port a t ion . In g e n e r a l . bi keway s are encou r a ged al ong majo r, s e c o n d a ry . and col l ector roa d s as we ll as in parks. Mas ter pl anned bi keway s w ithi n the p roj ec t boundari es fol low Po merado Road . Metate Road . and the proposed South Poway A rt eri a 1. B ikew ay s s hou 1 d be instituted in conjunction wi th roa dway cons truction. 1 Co rresponde nce wi th R.J. Mas sman . County of San Di ego Department of Publ ic Work s. Septe mbe r 1984. 4-63 Several ty pes of pu bl ic transportati on are a va i l a b l e �n the c ity of Poway .l Th e c ou nty tra n s it sy stem provi des th e Poway T r a n s i t Servi ce wh ich cons ists of two bus ro u tes traversing the ci ty and connecti ng wi th the North Cou nty Trans it Di stri ct . The San D i e g o Co u nty Transit Sy stem also provi des the Poway -S an Diego Expre ss, wh ich is a COIlITIut er serv ice from Poway to Center Ci ty S a n D i e g o . Whi le the above se rvices are avai labl e to the genera l pu b lic, the fol l ow ing transportation serv i ces are a v a i l ab l e to a limited segment of the pop u lation. Di al-A-Ride Se rv ice prov ides transit to res idents of pa rticular areas of the city; Cal l-A-Ri de s erv i c e aids the el derly and handic apped of Poway and vicinity. The San Di ego A irp ort Transportation Serv ice is a user-subs idi zed ai r�ort s h u t t l e . The c i t y of P ow ay I s S h ort -R a nge Trans it Pl an. (1983-1988) d oe s not prov; de . for any new ro utes o r se rvi ces wi t hin th is peri od .1 4.9.2 I!llpact s Futu re traffi c co nditi ons are ana lyzed under the ex isting General P l an . A 11 futu re traffic con di t; ons are · for areaw ; de bui l dout 1 and use cond; tions . Futu·re v o l ume s and v o l um e to capa city rat ios ba sed upon bu i l d o u t of the Poway Ci rcu lation El ement wi th and w i t h out the proposed proj ect are incl uded in Tabl es 13-17 . Da ily vol ume to capaci ty ra ti os fo r Level of Serv ice C condi ti ons b a s e d on t he city Ci r cu lation E l e me n t are shown in EXhi bits 22 -26. Tot al fut Ure t r a f f i c vol um es an d v o lume to ca paci ty ra t i o s wi ll si gn ifi cant ly i n c r e ase for roadways in the p roj ec t vicinity. 1. The project wi ll g e ner a t e up to 73 .158 da; 1y tri ps t ba sed upon SA NDAG proj ect ions whi ch i n c l u d e 237 exi st ing nearby res i dent ial uni ts. Of t he se dai ly tri ps , 18,923 are es ti mated trip pro ductions and 54 ,235 are est i mated trip att racti ons . 2. The horizon ye ar traffi c fo reca sts indi cate that da ily vo l umes on Poway R o ad wi ll si g ni fi c ant ly exceed des ign capaci ty as a major 1 Refer to Corres pondence. 4-64 l � � ESCON7DDO � -t'IJ p-\� <:)', -.............. t. HORIZON YEAR , :c �l TRAFFIC FORECAST '� ).... 1\& Average We e kday Tr affic In Thousa nds "" . t j of Dally Ve hicles �6 80 .;' 40 �E . Legen d 50 �-;;;::-------o· ;-",: 25 .�� . ./ __ ) __ �� -Freeways I ,;; I ---E)(prMsways , \ �I /" �� I� i! / �S ( �N �. � ..>O�,) I POWAY W( AAMAR NAS $$ / I / ' �� - c.� '60------1 l.... �$ I I '\ 1l'I! sS � NI IS' \ § ) � �U .-4--=0 '-----(.-....".-----1. IV \ / Poway Rd. to 7t---,��' � � � . , Q � , �-?.o ;, Jf..e(\a\ �'-SOUth Poway � tg � I C\j �-..------.- SANTEE n �\ \ SOURCE: 8ANDAG 'No Build" 'Al ternat ive SOUTH POWAY PLANNED COMMUNITY EXHIBIT 17 I DI EGO AMAR NAS Alternative 8 HORIZON YEAR TR AFFIC FOREC AST Average We ekday Tr affic In Thousands .J.O � .... a:: POWAY i w Twin Peaks of Daily Veh icles begend _ FrHWlYI 4-Lanl ••••• EXprellWJIYI __ 6-Lanl ( Expreuwlyl � �o •••• South Poway I I -, I Il)I N1 0 itl LtJ °1 I I I I I Art.rill Extenlion 30 SC7S0 SANT,EE SOURCE; SANDAG -, SOUTH POWAY PLANNED COMMUNITY o EXHIBIT 18 ·' l DI EGO AMAR NAS Al ternative 10 25 .. --." . ...' HORIZON YEAR TRAFFIC FORECAST Av erage Wee kda� Tr affic In Thousa nds of Dally Ve hIcles .0 " .-I!: • Lege nd ---�Lan. EJlpr.UW1IVI POWAY §. w Twin Plain Rd, -,--50 ,8'0 g .o ?\�, 1 6 \ \� \ I , I I I tQ l llI �I IO (I), I , I I I r;o I �I I ( SANT�E 80URCE:SANDAG SOUTH PO WAY PLANNED COM MUNITY o EXHIBIT 19 ) DI EGO MAR NAS Alternative 11 . -, � -' ......... ' .. ESCON DIDO HORIZON YEAR TR AFFIC FORECAST Average We ekday Tr affic In Thousands of Dally Vehic le s 25 • In "CI ... legend -Freewavl 4-Ll ne a: t'II POWAY ]. ••••• Eltprt5tWlllyl } I w __ 6-Lane .-/1 ExprenwlIYs � Twin Peaks _..._... Rd. "0 -'" ••••••• , 45 .... ""s .. -\ ) I A� 40 \ --� 15 .�� \ •• 30 'l�� y----I SC7BO � "\�o\)\" Poway p..rte ria\ I \ � j I I inl N'o [:I U"I Ull I I I I I :�v �I I ' I I i I SA NTEE : SOURCE: SANOAG SOUTH POWAY PLAN NED COMMUNITY EXHIBIT 2 0 DI EGO .MAR NAS Alternative 12 ESCON DIDOF .. .-/ HORIZ ON YEAR TR AFFIC FORECAST Average Wee kday Tr affic In Thousands of Daily Ve hicles 26 ,Q -,::I "'"' a: = POWAY I: IoU I Legend __ FrHWIIYS 4-un. ••••• EXP"UWIY'� __ Solan. ExprelSw.y. '2.� •••• South Poway Artlrl.1 Extension 36 SC780 SOURCE:SANDAG SOUTH POWAY PLANNED COM MUNITY o EXHIBIT 21 1 •. _ -----, , I I I I I ..... "*.:.:;:.;.;.....:D::.;r�l v:.:e:......;;L;....;;;.-i ,--- r -'" ::;:1!:7::"t ....... .:.=fi-c hr' s t man Lane \ «)I ,;\ � 1 __ --.., Road J ��--�--�� I ��. I ,-1 l&1�' ..... �_-, -�:':';';;';'�"""'-+-"'--J... il;;. ; I "No Build" Alternative I -, , , , Volume to Capacity Ratios SOUTH POWAY PLANNED COMMUNITY -- Legend t97. VIC R.tlo With South Poway I m VIC R.tlo Wlthc Llt South Poway ... ... ... , I , , , \ \ \ \ \ \ , , " I \ , \ \ , .... ... I I , , J I r ----�J g18. ' ,; I " I I J I I I , \ \ I \ \ I -----I ---------- 8� KUNZMAN MiD A88OCIATE8 EXHIBIT 22 ,. Alternat ive 8 ...... , __ !' •. _.. J.. ,2- I I ---__ I I I I I I I OrNe L -- 1 �.;. -- r -" r-I • .1 Christman Lane Road ---, I I I 1 -, , , \bl ume to Capacity Ratios SOUTH POWAY PLANNED COM MUNITY '-- .... -I' ••••••• Legend .B9 _ VIC Ratio With South POWay .64 VIC Ratio Wi thout 5cKJth Poway I I ... "-" , , \ \ , , \ \ \ \ , \ \ \ \ \ \ \ \ .... " I I I " I I J ___ .. _..Lo-r �� J " I " I J I \ I I I , , I I I I -----I 8OURCE: KUNZMAN AND A8SOCIA TEa EXHIBIT 23 ,� ---__ I , I I , I I ��D�r�lv�e��L�-1 Christ man Lane --1 Road I -l,..�-"''''''';'';'';;;;';� / Pomerado Alternative 10 I I / Q> I iQ I "tl �J�I \ , \ , I I -, , '\. Vol ume to Capacity Ratios SOUTH PO WAY PLANNED COM MUNITY '-- I I " " Legend 92 _ V Ie Retlo Wit" South Po •• y aD VIC Ret lo Without South �ey ... ... , I , , \ \ \ \ \ \ '\. '\. '\. \ \ , , � , " " I I I ... J I I ..... _-...� ..J.-, I gl�. " I ,/ I I I I I \ \ I • \ , I I -----I ... -------�- SOURCE: KUNZMAN AND A880CIA TEa EXHIBIT 24 ,_.,"" " ... ,2- . '. t I ---__ I I I I I I I I-....:.: • ....:;:� __ ..;;L;...;;._ "j Christman Lane \ -0\ �\ U. \ __ II .. --., � �� .... "- ' .......... -, I I Alternative 11 Vol ume to Capacity Ratios SOUTH POWAY PLANNED COMMUNITY ,--I I , , , . " . --'- Legend .88 -'lIe Ra tio With South Pow!! .83 VI C Ratkt Without South � , , \ \ \ \ \ \ \ \ , \ , \ \ \ \ , , " , I I I '" J I I �_ ... _.J.-o lC¥! J I "'./C! I I " / " I I I I \ \ I I I \ \ I I -----I !..--------- EXHIBIT 25 ,2- I I ---__ I I I I I I I Orive L --I Golden �--- Alternative 12 r -� r- Christman Lane Road ---, ) " I I I " I ! �� I . ·,...1 .... .... I -, , , Volume to Capac ity Ratios SOUTH PO WAY PLAN NED COMMUNITY Legend , -_ M. V Ie Ratio With South Pow-v I .eo VI C Ratio WIthout South Pow., I " .... .... , , \ \ \ \ \ \ \ , , , , \ \ \ \ \ \ ..... .... I I I I , I , \ \ ", I I I \ \ -----I co lli) -. ..., -. EXHIBIT 26 arteri al for al l of the c i r c ul a tion sy stem al ternati ves . bo th wi th or wi t nout South Poway Pl anned Commun ity. However. t h e over capac ity c o n d i t i on s are mi nimi zed wi th SANDAG Al ternati ves 8 and 12 because of the prop osed connect ion o f the South Poway Arteri al to the Mercy Road interchange at I n te r s t a te 15. For exampl e, total fu tu re vol umes on Poway Road west of Pome rado Road ra nge from 58 ,000 to 59 ,000 v eh i c les per d ay for the No-bui ld A1 ternati ve and Al ternat ive 11 , down to 49 ,900 veh icles per day fo r A1 t e rn ati ve 8. 3. Though not speci f ical ly e v a lua ted in the Ku n2man stu dy, de vel o pment of a seconda ry proj ect access to Pome rad o Road s o u th of Metate Road c o u l d r esu l t in si gni fi cant reducti ons in traffi c vo l umes bo th on the Sout h Poway Arteri a1 betwee n Pome rado Road and the Commun ity Road ext ension. and on Pomerado Roa d its e l f a l o n g the s e gm e n t betwee n the proposed seconda ry access intersection and the South Poway Arterial . 4. With sev era l ro adways pro vi ding a c c e s s from the proj ect to Poway Ro ad, Pome rado Road , and Sy ca more Cany on Road . good e me r g en cy access is a nt i c ipa t e d at bui l dout be cau se there are two way s of re aching any poi nt w i t h i n the site. 5. A specific a l i gn ment fo r a potenti al South Poway Arteri al extension throu gh the uni ncorporated i s l a n d and Mi rama r Ranch No rth has not be en identified. An extens ion wh ich wou ld al ign wi th proposed Cyp res s Can yon �oad pri or t o its intersect ion wi th Spring Canyon Road in Mi ram ar Ranch North is consi dered most likely . P o t e n t i ally si gn ifi cant land fo r m al teration , vi sual and land use effects co uld occur with ma jor arteri al ro ad devel opme nt through t h e se hi ll side are as . 6. Bu ildout of t h e proj ect can be ex pected to ge nerate dema nd for alterna ti ve transporta tion mode f a c i l i t i e s and s e r v i ces . Bus tu rn outs . "park -and-ri de" faci l Hies, and Shel ters at transfer poi nt s may be requi red ons ite. Cumul ati ve Impac t. Based o n total t ra f f i c vol ume s and share of tot al fu tu re vol umes on exi st ing and pl anned faci liti es (Tables 13-17 ), the proj ect wi ll ha lle a si gn ifi cant cumul ati ve i m p a c t on both the loca l and reg ional ci rcu lati on network . 4-70 Al ternat ives Impa ct s: Al ternati ve (3). the hi gh intensity al ternati ve , wou ld si gni ficantly increase impacts to traffic and circu l at ion re lati ve to the prop osed proj ect . The addi ti onal 400+ res iden ti al uni ts and 35 ac res of indu strial park /li gh t industrial uses co u ld be antici pated to ge nerate 7.000 to 8,500 additiona l avera ge dai ly tr1 ps , representing approx ima tel y a ten percent inc r ea se ove r proposed project level s.! Al ternati ve (1), the low intens ity alternati ve wo u ld su bs tant ial ly reduce total traffi c vol ume s with the incl usi on of on ly resi dential land uses . In compa rison to the prop osed proj ect , th is al ternati ve could ge nerate approximately 6,500 average da i ly tri ps , re presenti ng a re ducti on of approx imately 90 percent of the total da ily trips att ri buted to the pro posed proj ect using SANDAG select zone data . Significantly. however , thi s al ternat ive provi des little trip attract ion capab i lity and does not contri bute to ba lan cing of traf fic fl ows in and ou t of the Poway communi ty. 4.9.3 Mi tigation Mea sures The fol lowi ng measu res are recommen ded to mi ti gate the impacts of the proj ect on traffi c and ci rcu lation. 1. The ba si c comm unity des ign of the South Pow ay Pl an ned Corrmuni ty. inc 1u di ng trip att r a ct i n g industri al and corrrnercial /offi ce uses , wi ll hel p to re duce the imba l ance of peak hou r fl ows cu rre nt ly oc cu rri ng in and out of the Poway comm un ity. 2. Amend the ex isting ci ty of Poway Ci r culati on El ement and ot her appro pri ate ci rculation el ements to prov ide for the constru ct i on of the A lternat i ve 8 ci rcu 1 at; on sy stem as presented in the Route 125 North Location Analysi s. 3. Poway Road should be cl a ssi fi ed as a primary arteri al between Inter- state 15 and Ga rden Road based upon the SANDAG forecas ts. It should 1 Dat a as sumes 10 to 15 dai 1 y tri ps per dwe 11 i n9 unit for 1 ow-medi um to rura l resi dential uses. 1,250 dai ly tri ps per acre for nei ghborhood cOfllTlerci a 1 and 100 dai ly tri ps pe r acre fo r the proposed i nd.ustr1 a 1 mi x. 4-71 be noted J howeve r, t h a t adeq uate ri ght-of-way fo r a pri mary arteri a1 from the c i ty of Poway I s western bo undary to Ga rden Road does not pres ent ly ex ist and its acqui sition wo u ld req ui re t h e con demnat ion of a 1 arge number of ex; st 1 ng pri vate ly ow ned bui 1 di ngs and ot her struc t u re s . The South Poway Arteri al shoul d be cl assi f ied as a ma jor arte r ial between Mercy Road and Po merado Road , and as a primary arteri al between Pome rado Road a n d the ex tension o f Commun ity Ro ad, and a s a major arteri al between C OOImu n i ty Road and Sy camo re Canyo n Road . Based on project-level studies� the segment bet ween Pomerado Road and Commu nity Road cou ld be redu ced to a ma jor arterial wi th de vel opment of a secon dary access to Pome ra do Road . 4, Rega rd less o f the SANDAG Route 125 A l t ernat i ve implemented, improve ments to two cri tical intersec tions , Poway Road/Pomerado Road and Poway Road/Commu nity Road , should oc cur re lati vely ea rly in the devel opment o f the prop osed projec t. At the Pmtay/P ome ra do intersection. the si t uati on c o ul d be imp roved by having dua l left -tu rn lanes on al l four app roaches , instead of two app roaches as now exi sts . W i d e nin g of CO/11Tlun ity (unde rgroun dfng the drainage channe l) and the ad di ti on of dua l left-t urn lanes from we stbound Pow ay Road onto Contnun ity Road wou ld greatly improve .the op erati on of th is inters ect ion. 5. Ma int ain a hi gh level of servi ce along arteri als by re stri ct ing park ing and cont rol ling roadway access. 6. Const ruct al l s t r e e ts internal to the proj ect to fu ll ultimate cross sect ions as adj acent de vel opme nt occurs . 7. Cons truct al l s t reet s bo rderi ng the proj ect to ul timate hal f-sect ion wi dths in conjuncti on wi th de ve l opm ent . 8. Since t h i s traffi c stu dy fo cuses on l o ng-r a n g e (yea r 2005 ) traffi c pro jec tions , more det ai led traffi c imp a ct s such as local street locations and si zi ng, a nd roa dway acces s p r o vi s i o ns shou ld be addressed at s u b s e quent leve ls of planni ng. 9. Cklsi te ci rc ul ati on impro vement s s h a l l be provi ded by th e proj ect in accordance with South Paway Planned Commun ity Deve lopment Plan standards . 4-72 10. The project shou ld co ntri bute towa rd futu re offsite imp rovements in prop ort i on wi th its ant i c i p a ted use of impacted faci lities. Pe rcent of-total traff ic vo lume ca lcul at i ons (Appendi x G, Tab les 3 through 7) may be uti lized as a basis for esti mat ing contributi ons . 11 . The pro j ec t proponents shoul d support and en cou rage al ternati ve roodes of transportation through p ro vision of bike lanes and pu bl ic transit access . I ndu st ri al uses should encou r age ri de -shar1 ng. 12. The proj ect proponents should ded icate exi sting and master pl anned t r a 11 5 on s 1t e • 13. Emp loyers shou ld be e n c ou r a g ed to prov ide incenti ves for u s i n g al terna ti ve transportat ion mo d e s and to pro v i de "fl ext1me� or nontra ditional work schedu ling in order to l 1gh t e n pea k hou r traffi c vo l umes . 4-73 , I 4.10 AIR RES OURCES 4.10 .1 Exi st ing Condi ti ons The co u n ty of S a n Di ego lies wi thin the San D i ego Ai r Basi n (S DAB ). Ai r qua 1 i ty wi thi n the SDAB is d e t e rm i ned oy both p r i mary po 11 utants (e g . J c a r bon monoxide, pilrti cul ates and hydro carb ons ) wh ich a re added d a i l y to the air mass, and by secondary po ll u tan t s (eg •• o z o n e . oxi des of nit rogen and photochemi ca 1 ae ros o l s ) a l re ady pres ent in the ai r ma ss . Second a ry po ll u t ant s (e s pec; al ly oxi dants su ch as ozon e ) present the major air qu a l i ty probl em in the ba sin . The ai r q ua l i ty of the proj ect area is det ermi ned by t h e p r i m a ry p o llu tan t s e m i t t ed l oca lly , and the exi st ing regi o nal ambi ent ai r q u a lity , comhi ned wi th the sp e c ific met e o r o logi c a l factors wh ich i nfl u e n ce the site. C1 1�te and Meteoro logy Cl i m at e comb ; nes with m e t e o ro 1 09 i c and t o p o g r aph i c c o n di t i ons to affe ct local and reg ional ai r qua l ity. A d i scus s i on of l ocal t o pog r a ph i c condi tions is c o n t a i n e d in Sect ion 4.1 LAN DF ffiM AND TOP <XlRAPHY , whi le cl i matolo gic and me teorologi c con di ti ons e n demi c to t h e Pow ay area are descri bed be low. Poway has the same c o o l . semi ari d mediterranean cl ; mate fo und th roughout southern Cal iforni a. This cl imate is characteri zed by ho t, dry sunmers a nd mi ld, wet wi nters. Prevai ling wi n d s are we ste r ly to northwes terl y and occur during the dayti me hO urs . These are u s u a l l y mi ld wi nds of n o mo re than ten k n o ts in ve loci ty. D u r i n g the ni ght and early IOOrn i n g hou rs , the wi nds re v e r s e di recti on and bl ow easterly at a mi l d speed of 1 ess th a n fi ve knots . Oc cas ional hot. dry east erly wi nd s (Sant a A n a s ) us ual ly occ ur in two-or three-day p eri o d s in the autumn mo nths . Maximum r a i n fal l occu rs between Decembe r and March , aver agi ng ap proxi mately el even i n ch es per y e a r . Sunny days are the nonn th roughout the y eara A v e r a ge tempe ra tu re in the area is 62DF. The Poway are a freq uent ly expe ri ences tempe rat u re i nvers ions , whi ch trap ai r and ai r p ol l u t a n ts in a limited at mospheric vo lume n ear the ground . 4-74 Te �erat ure inversions are comon in the co astal and footh ill re gions of San Di ego County and the hil l and canyon topography of the reg ion accen tuates these co nd iti ons . A.bf ent Ai r Qual ity Ambi ent ai r qu a 1 ity us ua 11y is des cri bed 1 n terms of compl iance wi th stat e and federal air qua lHy standards . These st anda rds have been set to pro tect pu bl ic health wi th a n added ma rg in of safety . Ta ble 18 presents current state and fede ra l a mbient air qual ity st andards . Ambient ai r qu al ity data is moni tored by the San Diego Ai r Po ll ut ion Con trol Di stri ct (APCD ) and the Ca lifornia A1 r Resources Board (ARB ) at mon i t o ring stati ons th roughout the co u nty . The moni tori ng stat ion ne arest to the South Poway proj ect site is located in Escondido and provi des air qual ity date., wh ich can be co nsi dered ind ica tive of co nditions in the station vi Cinity. Tabl e 19 provi des � sUlllTlary of the ai r quality data re co rded from 1981 to 1983 at th e Escond ido stat ion. Cou ntywide ai r qu ality is also shown for the same pe ri od (the cou ntywide data is rep resentati ve of bas i nwide co ndi tions ). Al though the standards for ozone and pa r ticul ates ha ve been exceeded on several occas ions , general ly. ai r qua lity in the proj ect vicinity is cons i dered go od . Therefore, sensiti ve re cept ors su ch as school s, hospi tal s, con va lescent homes and agricul tural areas are not currently subject to si g ni fi c ant ai r po llutant probl ems. Ai r Qual ity Pl a nni ng Programs The fede ra l Clean Ai r Act (1977 ) re qui res al l states to meet federal cl ean ai r standardS . States are requi red to su bmi t irTJ,)leme ntat ion plans to the En vi ron ment al Prot ect; on Agency show; ng at ta1 nment of the cl ean ai r st an da rds in areas wh ere such standards are not be ing me t. The San Di ego Ai r Basin ha s bee n de si gn ated a "non -att ai nment area " because concent rat ions of several air pol l utants pe riodi cal ly exc eed air qual ity standards .SDAB was ori gi n al ly de si gnated as a non -att ai nment area for oz one , ca rbon monox ide. particul ate matter, nitrogen dioxide and lead . Over the past several 4-75 AM BIENT AIR QUALITY STANDARDS 1 �nt A" ..... nm. C .. Hor .... 'hndar.' NaIoMI ........ C�ntr�loft" __ etholt' !'rlm�.· IMIOftdary'. • "etllocl' --o..id.nt'O I �, 0,10 WrYI Ultr.,,'. ---(200 ug/m") PhotO,"-1 rv Orone , �r --0.12 pc)m S..". as PrirMry Ethvllnll (235 Ulil/m") Sll �rd Chemllumil\eSClncll Carbon MQnDlllOe 9.0 ""m Hon-Dilperlln'l S.ml I. NorI-Di�rlivl B�I (10 mg/�) '"trl/eel 10 mg/ml Prlmlry Inftlred Spec1rosc;opy (9 ppm) Su ndlrd. Spectroacopy 1 hour 20 ppm (N DIR) 40 mg/ml (NDlR) (23 mo/m') (35 ppm) li6itrOlliJI" DIoxide A"nuII A",.,.lgI -100 Ulil/m> Gas PtlI .. GI. ""I .. 10.05 ppm) C h amilu mi 0 51"'1 .. PrirMry Chlmi lumin.-ee"C8 I hcK.ir 0.26 ppm n.-nc. -StancMlrd (470 "'111 m') Suit",' Dioaidl An"uII Avet'lge -80 u ll /m' - (0.03 ppm) 24 t\cxIr 0.05 ppm 365 ulil/m' -/131 ull/m'l-UltraviDle! 10 14 ppm) PIP lIosanili", FIUOflKenel J hoUI --1300 ug/m' (0.1i ppm) , hotil 05 ppm --(1 310 vll/ml) SUlpended A""uII GeomllH,e 60 LJ<jj/m> 75 ug/m' 110 Uil/m' P.,.ueullte �'I" High Volume High Vo lume Mlnlr 24 nou' 100 ull/m' Slmpllng 280 ull/m> 150 ull /m> Slmphl\Q 5ulll1l5 24 hour 25 ulil/ml Tur*"dimetrie --- a"lum Sulfl!e 1.I� 30 dllY 1.5 ulllm' Ato miC ---AYllrag' A�rpllOn CIII"dar --'.5 ull/m' Seme I. Pl io At o,,\(c QUI"er mIry Stlndald AbsOfl;Jt I on �drog.n , hoor 0,03 ppm Cldmium Hydrox 0 ---SuKid, (42 uil/ml) ide STflKtI" Vinyl Chione» 24 hour 0.010 ppm TMlI' � /Ch'CWOllhl"lI) (28 ug/ml) Collection. .. --- Chrom.c",,.phy Vllibility I ooa-rvilion In luHiC:III"' Imount 10 fI�ucinll reduce Ihl prlvailing vilibllityl P.nieI .. to ' .. 1 thin '0 rnll .. wtIet'I thll rllwlvlI humidity it lea thin 7� --- APPUCABLE ONLY IN THE LAKE TA HOE AI R BASIN: Carbon MonoxicM II hour II ppm I NOIR ---(7 mg/ml) Vilibil;ry 1obMnr.von In �lticilf11 IlllOUnl to R.auClng reducll the p!'lhl iling v'-ibil/ty'l ---Plnidft 10 I ... Ina" 30 mi ... when t!'le '�lti"l humic:lity � IftIlhan � 1 Source: California Air Re80urces Board, Ca llforn'a Air C uaUtv Data, Volume X V ,1 883_ 4-76 Ta ble 19 AMB IENT A IR QUAL ITY SUMMARy1 Number of Days Exceeded Lo ca1 2 /Cou nty Pol lutant S t a n dar d 1981 1982 1983 Ozo ne 5 S t at e 52 /192 47 /120 6 2 /126 F e de r a l 13/78 14/47 20/65 Max . Concent rat ion .19/.29 .22/.23 .20/.28 C a r b on mo nox i de St ate N /A 0/0 0/0 F e d e r a l 1/1 1 /1 0/1 Max. Concentra tion 15/l� 15/15 1 4 /16 Nitrogen di o xide S t a t e 0/0 0/0 0/0 federal N/A N/A N/A Max. Con c entrati on .17/.27 .lB/.20 .17/.20 Sul fu r d i o xi d e St ate 0/0 0/0 0/0 Fede ra 1 N/A N/A N/A Max. Concen trati on .05/.12 .04/ .13 .03/.07 Suspended particu1ates3 State 23/48 4/17 7/10 F e de r a l 0/0 0/0 0/0 Max. Concent ra ti on4 122/271 127/1 71 147 /150 years, SDA B 's ai r qua lity has improved to wh ere o n l y oz one and parti c ul ate co nce ntrations st i ll ex ceed fe deral stand ards . In 1976 , the San D i e go Ai r P ol l u t ion Cont rol Di strict (S OAPCD ) in conj uncti on w i t h the San Di ego A ssoci ati on of Go ve rnment s (SANDAG ) p r ep a r e d an ai r qu al ity pl an prov i d i n g prog rams and p l a n s for local gove rnme nts in an eff o rt to meet state and fede ra l qu a l ity standards. N o v e mbe r 1982 is the latest p l a n re vi sion. 1 Ai r Resources Board, Ca li forni a Ai r Qu al ity Dat a. 1981 -83 , Vol s. XII I-XV . 2 Dat a from Escondi d o Ai r Q ual ity Mo ni tori ng Stati o n. 3 Expressed as perc entage of s a f11)l es taken wh ich exceeded the speci fi ed stand ard. 4 P a r t icu l at e s indi cat ed in ug/m3 . A l l ot her pol l utants indi cated in ppm. 5 1983 ozone d at a sou rce : Te lephone con v e r s a t i on wi th Cl ay ton Wh ite J San Diego Ai r Po l lution Control D1 stric t, March 1985 . 4-77 Th e 1982 St ate Impl e me nt a t ion Pl an (SI P) re visi on fo r the San D i e go Ai r Basin p rovi d es a s tra t e gy to bri ng the bas in into c o �l i a n ce with requi red standa rds . An i n t e g ra l pa rt of the pl an re v i s i o n uti li zes emi ssion p r oj e c ti ons for t h e bas in based u po n the SANDAG Seri es V Reg ional Gr owth Fore casts for the c o unty .1 Tabl e 20 presents t h e growth fo re c a s ts for S u b re giona l Area 15, wh i ch incl udes Poway (see E xh i bi t 14. Statisti cal A rea s ). Tab le 20 SANDAG S ER I E S V GROWTH FOR ECASTS SUBR EGI ONAL AREA 15 Popu lation· Ho us ing Un its Gross Resi dent ial D e ns i ty 4 .10.2 1000acts A.bi ent Ai r Qual ity 1985 46 .490 14 .616 3.3 1995 64 ,369 21 .811 2.3 2000 67 ,097 23 ,216 2.2 Impl emen tat ion of the p ro posed p r o j e c t wi ll r e s u l t in bot h lon g-term and short -term ai r qu ality impacts from stat i on ary as wel l as mo bi le sou rces . The proj ect-re l ated imp a c t s incl ude the fo llowing: 1. Implement at ion of the project wi ll res u l t in short -t e nn exhaust emi s si ons from the o p era t i o n o f construction eq ui pment . and fugi ti ve dust generated d u r i n g constru ct ion activities. Gene ral ly. g r a di n g and con s t r u c ti o n act ivities wt ll o c c u r in the proj ect area for bri ef p e r iod s duri ng the ent i r e appro ximate ly 20-ye ar devel opment p e r iod . Thi s acti vity wi ll be con cent rated , p r o b a b ly wi thi n t h e master pl an su ba reas t si n c e devel opment wi 11 most fe asib ly o c c u r conti gu ous ly wi thi n t h e se subareas . Det a iled const ructi on eq u i p me n t emi ssions were not ca lcula ted due to the lack of speCi fi c constructi on i n f orm a t i on . Gene r al ly, em1 ssions occur from hea vy, di esel -p owe red m a c h i ne ry and al so from 1 Note t h a t SANDAG S e r i es V f o re c a s t s ha v e be en r e v i sed and the cu rrent Seri es VI data i s ap pl ied fo r ot h e r pu rposes . Seri es V d ata is be ing ut iliz ed here in orde r to ap ply the 1982 SI P re v ision. 4-78 fu gi ti ve dus t du ri ng grading . The n u isa n ce from fu git1 ve dust wh ich is ge nerated at an avera ge rat� of 1 .2 tons per acre of constructi on per month � is co nsi dered the most s1 g ni fi ca"t short -term ai r qu al ity 1 mpact .1 T he am ount of du st emi ss ions wi ll v a ry day to day and is infl uenced by a numbe r of factors (ie ., we ather, level of acti vity, et c. ) • 2. Lo ng-te rm ope rat ion of the proj ect wi ll re sult in ai r pol l ut ant emi s s ions from both mo b; 1 e and stat 10nary sources . Mob; le sou rce emi s sions re sult f ro m combusti on of fossi l fu el s by project -g enerated traf fi c. S t a tiona ry sou rces of emi ssi ons resu lt at power plant faci lities from co nsumpt ion of electri ci ty and natu ral gas on s ite . Emi ss ions wi ll occur ons ite due to heat ge ne rati on in indi vi dual bui ldi ngs and reS i dences , and perhaps from op erat ions by industri es . Although the proj ect wi ll ge nerate mo bi le source emi ssions in the Poway area due to the traffi c-generat ing natu re of indust ri al land use, reci procal ly, the proj ect cou ld re duce co u ntywi de emi ssi ons by re duci n 9 the numbe r of dai l y c Olll1lut e r s to San 0; ego emp 1 cyment ce nt ers . The fo l lowi ng tables pr es ent ant ici pated emi ssi ons from vari ous mobi le and st a tion ary sou rc es at proj ect bu i ldout . Ta ble 21 AN TICIPATE D STATI ONAR Y SOURCE EM ISS IONS Poll utant Carbon mo nox ide Ni t rogen ox i des Hyd roca rbons Emi ssi ons (tons/yea r)2 4.0 23 .7 1.6 1 U.S . EPA AP-42 emi ssions factor fo r fu gi ti ve du st . 2 Generation factors from Ai r Qu ality Hand book, South Co ast A 1 r Quality Man a gemen t Di s trict, 1983 . Assumpt ions are listed in Appendi x H. 4-79 Ta ble 22 ESTIMATED M�IlE SOURCE EMISS IONS Pol l utant Carbon mono x ide Ni trogen ox; des Hy d roca rbons Tabl e 23 Emi ssi ons {ton s/ye ar}1 2,444 196 302 T OT AL ES T! MAT ED PR OJECT -GENE �ATE D EM ISS I ONS 2 Pol l utant Carbon mo noxi de N itrogen ox i des Hy d roca rbons Ai r Quality Planni ng P�grams Emi ssions (tons/year ) 2,448 220 304 The South Poway P l a n n ed COlTlTlunity proposes , at bu ildout , a t o t a l of 27 2 dwel ling uni ts and a t o t a l popu lation of 816. A lth o u g h bu ll dout is an tici pat ed fol lowing ye ar 2U05 . if .the fu ll d e ve l o p me n t statistics are comp ared to p r oj e c t ed growt h f orec a s ts for yea r 200U , the proj ect cont ri bution to Subr egional Area IS 's res iden ti al growth is m i n i m a l . Project bu il dout pop � ul at ion and hous ing u ni ts compri se about one and one-half pe rcent of the su b regi o n a l are a tot al . Cumul at ; ve Impacts . The p r o p o s e d proj ect wi 11 con t r i bute increme ntal ly to ai r qual ity de gradat ion in the SDA B . Although indi vi dual ly the proj ect 's impact to ai r qu al ity is mi ni mal , in co nj unction wi th s u r rou n d i n g devel op ments and the us a g e of automobi les as the p r i m a ry means of transportation, the ai r po ll u t an t s co nt ri bute d to the ai r ba s in wi ll have si gni fi cant i �acts . 1 Deri ved uti lizing UR B EMIS #1 Mode l, Cal i forni a Ai r Resou rce s Board . 1983 . 2 Refe r to Append fx H fo r ass umpti ons an d cal cul ations . 4�8 0 Proj ect Al ternati ves . Al ternati ve (3) imp acts to ai r q u a lity wou ld be cons; de rab ly greater than those of the proposed proj e ct due to the hi ghe r intensity use of th e land . In re lati ons hi p to the prop osed p roj e ct . Alter n at i ve (3) wo uld produce mo re stati onary sou rce emi ssi ons due to the lar ger numbe r of homes and industries , and greater quanti ties of mobi l e emi ssions due to the mu ch greater traffi c g enerat ion . Al te rnati ve (1) wo u ld not prod uce any indust ri al emi ssi ons . and res identi al e m iss i on s wou ld app roxi mate those of the proposed alternati ve. 4.10.3 Mitigation Measures The fo l lowing measures are proposed to mi ti gate the short -term and long term ai r quality impacts associ ated wi th the p ro pos e d proj ect . 1. The p r o j e ct sh al l comp ly f u lly wi th al l ru les and re gu1ations of the San Di ego Ai r Po l l u t i o n Control Di strict . 2. T h e impact of co nstructi on-generated dust particulates sh al l be re du ced to the extent feas ible by schedu ling constructi on and gradi n g p eri od s around the dry sunmer mont hs and by pe ri od ic sp r inkli ng wi th w a t e r .• Ot her fu gi t i v e dust control tactics out li ned in the Region Ai r Quality strategy shall be appl ied. 3. San Di ego County 's vehi c ular emi ssi ons wi ll be red uced throu gh legi sla ti ve exhau st em i s s ion control s, the prov ision of ma ss transi t. and the devel opme nt of cl oser emp l oyme nt centers , as wel l as impleme ntati on_of the co n t rol measu r es d el i n e a ted in the 1982 SI P r evisi o n fo r San Diego. 4. The Pl an ned Community De vel opment Pl an sha 11 incorporate energy co nser vation practi ces i nto the desi gn of the proj ect and i t s st ru ctures such that st at i onary Sou rce pol l utants both on and offs ite are limi te d. 5. Va rious des ign meas ures re corrrnend e d by the Cal iforni a Ai r Re source s Board (ARB ) shal l be incorporated into the master plan, including the fo 11 ow ; ng: 4-81 a. bi cycl e paths and on -st reet lanes b. pedestri an and equestri an faci lities c. ma jor open space and rec rea ti on faci lities 6. Proj ect and structu ral desi gn shoul d incl ude . at a mi n imum. tne fol lowi ng : a. ene rgy-effi cient lighti ng b. opt imum ins ulation st andards c. sol ar ac ces s siti n9 d. sol ar space heat ing/hot wa te r sy stems/pool he at ing e . energy-effi ci ent bui ltin app1 iances f. su pport of r1 deshari ng and publ i c trans it . inc1 udi ng provi si on of bus turnouts 7. Pursuant to det ai led proj ect-lev el traffi c studies. an an alysi s of local ai r qua lity at key roadway intersecti ons shal l be pe rfonned fo r ex1 sti ng and fu tu re (yea r 2005 ) condit; on s. 8. Onsite transit coordi nators should be requi red by the ci ty in order to develop and impl ement ca rpool i n9 . van pool i ng prog rams withi n the em p loyme nt/colTlllercial area of the South Poway Planned COfTITlunity. Ten percent of the on site empl oyment area pa rking spaces sh oul d be p re fer ential spaces desi g nated fo r carp ool s/vanpool s. 4-82 4.11 AC OUSTI C ENVIR ONMENT 4 .11 .1 Exi sti ng Cond iti ons Acou sti c en vi ron ment is ch aracteri zed by no 1 se sou rces and no; se re ce ptors in an area. With1n the Poway area, sen si ti ve noi se re cept ors ti a l areas , s c h oo l s , chu rches , h o s p i t a l s , li brar1 es , et c. s ou r c es of noise i n t he city are pri mari ly arte rial roadways , a r e a is subj ect to o c c a si o n a l ai rc raft overfl i ghts . City No ise Pol i cies are reside n S; gn ifi c a nt al thou gh the The ci ty of Pow ay has es t abl i shed standards fo r acce p tabl e noi se level s: 60 d e c i be l Commun ity Noi se E q u iva l e n cy Level (dBA CNEL ) is the maximum accept abl e o u t d o o r no ise exposu re for ru ral and s i n g l e fami ly res idential areas . 6b dBA CNEL is es tabl ished as the a c c ep t a b l e outdoor noi se expo sure fo r mu ltifa mi ly res i dential are as . 70 dBA CNEL is the accept abl e outdoor noi se exposure l e v e l for s c ho o l s . librari es . chu rches , hosp ital s, nu r sing homes , p arks , and re c r e a t i o n are as . In the e vent that ac ceptabl e outdoor no ise leve ls can not be re ached by v a r i o u s noi se att enuati o ns , indoor no ise levels s h a l l not exce ed 4S dBA CNEL . Current City Noi se Level s Current no i s e level s adj acent to roa dway links were det e rm i n e d in the ci ty of Poway Compreh ensi ve Plan (1983). The Hi ghway Traffi c Noi se Pre d i ction Madel de ve lop ed by the F ede r a l Hi ghway Admi ni st rati on was uti li zed in the determi nat i ons . Tabl e 24 on the fo l l ow i n g page i llu s t r a t es the cal c ulated noi se level s fo r ro adway li nks in the proposed proj ect site vi ci nity. The m o s t si gnifi cant f act o r in det ermi ning hi ghw ay n o ise level s tends to be re lated to traffi c s p ee d s rather than t h e numbe r of veh i c l e s pe r day . Wi th; n the ci ty, s e n s i t i ve r e c e ptors are 5i gn; fi c a nt l y ; mp act ed by noi se . Seve ra 1 sens it; v e re ceptors are e x p o s e d to noi se at the upper 11 mi t of the n orm a l l y accep ted cate gory. Included areas are Garden Road COlTl'llun ity 4-83 Ta bl e 2 4 CURRENT NO ISE L EVE L S ADJAC ENT TO MASTE� PLANNED ROA DWA Y LI NKSl R o a d wat Unk 50 CNEL1 D i s t a n ce to 60 CNE L Pomerad o Road (south of P o w ay Road) 69 dBA 1 9 6 fe et Poway Roa d (west of P omerado Road ) 73-76 dBA 376 feet Pome rado Road to Conmuni ty Roa d 74 dBA 401 fee t C o mmu n i ty R o a d to Garden Roa d 73 dBA 328 feet Ga rden R o a d 66 dBA 133 fee t M e t a t e Lane 62-65 dBA 74 feet School , G a r d en Park. an d Pome rado Elementary School . S e vera l res i den tial a re a s are c urr e n t l y expos ed to u n a tte n u a ted noi se level s up to 70 dBA due to p ro x i m i ty to r o a dw a y s . These areas a re l o c a t e d al ong Poway Road. Espo la Roa d. M i d l and Road. a n d Pomerado Roa d (from Poway Ro a d to Stone Can y o n ). Some of thes e homes are noi se' a tt e n u ate d by setbacks and noi se bar ri ers. Pot enti al ly senS'i ti ve rec e p t o r s in the proj ect v i c i n i ty incl ude 1) i so 1 ated r e s i dences a n d other s i ngl e-fami ly dwel l i ngs a dj acent to P o me r a d o Road sout h of M et a t e Lane, 2) mo b i l e homes al ong Metate Lane . and 3) low den s i ty re sidential uses south of Poway Road in the v i ci n i ty of t he pro posed Mi dl and R o a d e�tension. Ons ite Noi se Level s Within th e property bo unda ri es of the p r o p o sed South P o w ay Pl anned Communi ty. r o u g h topo graphy pl ays an important r o l e in intervent ion of noi se. D istance , hi gh ri dg el i nes and vegetation be t we e n ro adways an d the c e n t r a l porti on of the site serve to d1mi ni sh exi st ing noi se from r o a dway s . Exi st- ing resi dences located al ong P ome rado Road are not wi t hi n the 60 dBA CNEL a n d thus are not impa cted by roadway noi se. 1 B a s e d on ci ty of Poway Comprehensi ve Pl an (1983 ). 4-84 Pot ent ial proces ses based upon long-term s t a t i o nary no ise sou rc es are and machi nery. These s o u rc es are not proposed res tri ct ions to li ght industri al re 1 ated to i ndust ri a 1 cons i dered si g n i fi c a nt uses ansi te . T he heavy trucks and eq ui pment _ currently uti lized in the Padre T rans it mi ning operat ion wi ll co nt inue; expanded mi ning operat ions a s s o ci at ed wi th proj ect devel o p m e n t re presents a si g ni ficant potent ial n oi se imp act al ong Beel er Canyon Road -Pomerado Road . However , ro u ti ng of sand and gra vel operati on traff ic to a new Beeler Road wi th access off Sy camo re Cany on R oad or the South Poway Arte r i a l cou ld red uce or e l i m i n at e noi se eff ects on existi ng Beel er Cany on Road and Pome rado Road. Futu re Noi se Levels The pri ma ry noi se sou rces on the South Poway Pl anned Corrmu ni ty site and in the v i c ini ty are a"nt ic;pa ted to occ ur due to traffic several years in the futu re. Future traffic, whet her or not the proposed proj ect is de veloped . is antici pated to ra ise noi se l eve l s in proxi m ity to arteri al s. A noi se an alysi s prep ared by PRe Engi nee ri ng, Inc . for the South Poway Pl anned COJl1l11un ity, uti lized proj ections by Kunzman A s s o c i a t es to es ti mate futu re traffi c noi se level s in and around the proj ect are a with the South Poway de vel opment (see TRAFF IC AND CIRC U LATI ON, Sect ion 4.9). In order to present a wo rst case ana lysis , the noi se stu dy ut i li zed the hi ghest of the fi ve al te rnati ve traf fi c "o lumes al ong each of the anal yzed links . Addi t i o nal l y . the a n aly s is as sumed that si x pe rcent of th e traff ic co n si sted of trucks wh ich are t'li gher n o i s e level gene rato rs . The a n a l y s i s as sumed that roadways were level with the ad jacent propert ies so t h a t topographi c noi se attenuat ion was not considered. Exhibit 27 illustrates the nurroers as si gned to each an alyzed roadway 11nk. Tabl e 25 presents the worst case noi se l e ve l s cal cu l ated al ong each of these 1 i n k s. S; nce t h e nu rroe r of 1 anes and the speed 1 i mi t were as sumed , and because these ass umed va ri ab les can alter the n o i s e co nto ur interval by mo re th an 100 feet , these assu mp t i on s are incl uded in the tab l e. 4-86 Ta b 1 e 25 ROADWAV NO ISE LEVELS % of ADTs Di stances to CNEL Hi gh Gene rated Number Contou r Interva ls Li nk Al ternat he by of Speed 1feetl·· Number Ana 1lzed ADT s. Powa� Lanes {m2h } 6� 55 70 75 1 Al t. 14 30 ,000 3 1 4 4S 35"2 163 76 35 2 Al t. 10 30,000 32 4 45 352 163 76 35 3 Al t. 14 70 ,000 7 6 5 5 702 3 2 6 150 70 4 Al ts .ll&14 6 0 ,0 0 0 13 6 55 631 293 136 63 5 Al ts .11&14 4 5 ,000 1-6 4 45 461 214 99 46 6 Al l Al ts . 40 ,000 3-6 4 45 4 2 6 198 92 43 7 Al ts . 8, 10 11 & 12 2 0 ,0 00 10 4 55 376 175 81 38 8 Al ts . 8, 10 11 & 12 15,000 4-8 4 45 222 103 48 2 0 9 Al t. 10 -45, 000 4 55 646 300 1 39 65 10 Al t. 10 55,000 4 55 739 343 159 7 5 11 Al ts . 8&12 5 0,0 00 18-10 6 55 559 259 120 56 12 Al ts . 8&1 2 20 .000 4 5 5 376 175 8 1 38 13 Al ts . 8&12 2 5,0 0 0 54-61 4 55 4 3 7 203 94 44 14 Al l Al ts . 25,000 31-61 4 55 437 203 94 44 15 Al ts . 8&12 35,000 59-61 4 55 546 254 118 55 16* 15,000 4 45 222 103 48 20 17 Alts . 8,11 12 & 14 20,000 61 4 55 3 76 175 81 38 18 Al t. 8 25,000 55 4 55 437 203 94 44 1 9 * 6,000 2 45 134 62 29 13 20 Al t. 8 25 ,000 55 4 55 437 2 0 3 9 4 44 l1 Al l Al ts. 25,000 2-42 4 55 437 2 0 3 94 44 22 All Al ts . 25,000 2-42 4 55 4 3 7 203 94 44 23 Al t. 12 40 .000 10 4 S5 597 277 129 60 • Esti mated ADT volumes not de ri ved from the SANDAG study. *. Mea sured from the cent er of the ou tside lane . 4-87 Noise Analysis Area and Link Numbers �I"'\I I T H POW A Y PLANNED COM MUNITY LEGEND 3 -Link Nurnb4tr -_ .... --._ ... _----.. --- ._- EXHIBIT 2- In a d d i t ion to noi se generated alon g maj or a rt eri al s . the uti 1izat1 0n of mi nor local st reets wi ll ge nerate some noi se ons ite. Noise level s wh ich are ty pi cal of v a r i ous ro adway ty pes op erating at cap aci ty an d at Le vel of Servi ce C are surrrnari zed in Table 26 . Tabl e 26 NOISE LE VELS ADJACENT TO ARTER I ALS CPERAT lNG AT CAPACITyl Dai ly Cap acity2 Di stance to CNEL Co ntou rs (F eet )3 Roadw ay Type Co 11 ector Secondary 60 dBA 65 d B A 70 dBA 10,000 20 ,OOU 118 188 55 88 26 44 Note al so t h at commun ity eq ui val ency noi se level s wi th in the sHe wi ll con tinue to be infl uen ced by ai rcra ft overfl ights . Si nce the sHe is ou ts ide the a i r station 's 60 dBA noise co ntour, these imp acts are not co nsi de red s i gni fi cant . «Msite L and uses proposed for the proj ect site wi ll vary co nsi derabl y in se nsi ti v ity to no ise. Very sensitive noi se re cept ors proposed incl ude singl e-fam ily res i den ces and mobi le hOme paries and m ay incl ude p as si ve parks and re c r e a t ion are as . Rel a ti vely insensiti ve receptors include cOfll1lerci al and of fice uses . Insens iti ve re cept ors incl ude indus tri al and ware housing land u ses and parking lots . In gene r al , the less sensi t ive uses are pl an ned al o ng the major ro adways and the more sens iti ve uses are pl anned near mi nor roadways . C umul at ive Impacts . Proj ect-g ene rat ed ve hi cu l ar traffi c wi ll have a pot e n tial for si gn iff cant curru lati ve a c ou s t i c imp acts in con jun ct i o n wi th a r eaw i de traffi c on ro adway li nks ap proach ing or operati ng at capaci ty. 1 Based on ci ty of Poway C omprehens ive Plan, 1 983 . 2 Le vel of Servi ce C. 3 Di stan ce me as u r e d from roadw ay cent e rl 1 ne • 4-88 Al ternati ves . R oa d w ay noi se imp acts from Al ternati ve (3) co u ld be s;gn1 fi cant ly gre ater th an those of the p r oposed proj ect as a r esult of a p roj e c ted tot al tri p ge n e r a ti o n increase of app roxi mate1y 5-10 percent from in creased resi de nt ial and indu stri al development. Short-term noi se impacts of construction would o cc u r wi th increased grad ing requi re ments in SF-2 and SF-7 a r e as . Alternati ve (1) would si gni fi cantly reduce roadway noi se impact s on key proj ect ac cess ro ads (ie., Pomerado , Community, Midl and extens ion) re 1ati ve to that of the proposed proj ect . Th is low intens ity al ternative wou ld requ ire mi ni mal gra ding and con s truct i o n fo r bu i ldi ng pads . 4.11 .3 Mi tigation Me asu res The fo llowi ng me as ures a re prop osed to mi t; gate the short -term and 7ong-term n o i se impacts associ ated wi th implementati on of the proj ect. 1. The proj ect shal l comp ly wi th the ci ty noi se ordi nance. 2. Construction acti viti es shal l be lim ited to the hours of 7 a.m.-7 p.m., Monday th rough Fri day, and 8 a.m.-5 p.m. on S atu rd a y . In ad di tion, al l c o n s t r u ction eq ui pment s ho u l d be eq ui pp ed wi th effe ct; ve muffling devi ces and shal l ut i lize des ignated ro utes of ingress and egress to the proj ect site. 3. Setbacks and cl ustering, ac oust ic arch itectu ral desi g n, acoust ic con struction, an d noi se ba rri ers can be used to redu c e outdoor noi se level s in re si dent ial are as ons ite and offsite . RecollJJ1ended noi se bar ri er hei gh ts range from about fo ur to si x fe et , depending on the road way. Barri ers can be a be rm. wa ll , or a co mbi nation berm an d wa1l. These methods shall be s peci fi c a l ly identified in subsequent site specHi c pl ans . 4. Buffer areas. noi se barri ers, bu ilding at tenuati ons or a conili nation s hall be uti lized such that resi denti a l/industri al land use inte rfaces are not subject to noi se level incompati b ilities. 4-89 5. Industri es sh al l provi de noi se at tenu ati on de vices for equi pment or ma c hi nery produ ci ng e x c essi ve noi se level s. 6. Res i dential stru ctu res shal l be at tenu at ed su ch that indo or noi se l e v e l s do not exceed 45 dBA wi th the wi n dows closed in any habi table room. 7. Upon f i l in g a n ap pl i cat i o n f or b u ild ing p e r mi t s . an accredi ted expert or a utho ri ty in the fi e ld of acoustics shal l submit evi den ce in accordance wi th the fol lowi ng procedu res wh ich certi fies th at l o c al noi se st andards wi ll be sati sfi ed: a. An acoust ical an alys is re p ort de seri bing in det a i 1 the exteri or no ise en vi ronment a nd the a c ou s t i c al des ign fe atu res requi red to achieve the interi or no i s e st andard shal l be su bmi tted to the Di re ct or of Planning S e r v i c es for ap proval . b. Prior to issu ance of b u ildi n g pe rm its, satisfactory e v ide n ce shal l be sub mi tted to the Di rector of P l ann i n g Service s. wh ich indi cates that the sound atte nu a ti on me as ures speci fied in the a p p ro v ed acousti ca'l report have been incorporated into the des i gn of the project . 4-90 4.12 PUBL IC SERVICES AND UTIL ITIES Al l of the agencies wh ich provi de pub l ic se rv ices and ut l lities to the prop osed project area were cont act ed concern ing their ab ility to serve the area . Each ser vice is addre ssed bel ow . Exhi bi t 28 illustrates the loca ti on of publ ic faci lities. 4.12.1 Fire Protect ion 1 Existi ng Conditions The proposed proj ect is an are a su hj ect to brush fi res or wi ldl and fi res due to the dry, fai rly de nse ve get at ion th at c o v e rs the land du ri ng the mon ths of SUrmler and ea rly fall . The cent ral area is not cu rrent ly se rved by roads and avai lable access to the site is gene ral ly by country bad< road s or in cases of se vere eme rgen cy. by hel icopter. The project s ite lies wi thi n the ser vice are a of the City of Poway Fi re Depa rtment . The re is an Automa tic Ai d agreeme nt wi th t he Ci ty of San Di ego Fi re De p a rtme nt such that in the event of a l a rge fi re on the pro posed proj ect prope rty , San Di ego wou ld prov ide ad di tional support from the Scri pps Ranch Stati on . The fi re De partment rel ies on the Dep artment of P u b l i c Servi ces for adeq uate wat er pres sure to comb at fi res . Faci lities. There are two fi re st ati ons cu rrent ly ser ving the proposed proj ect area . Response ti mes below are es t i m a t ed for the western, eastern, and southern p o rt i o ns of t h e site wi th cu rrent acces s. The standard response time for effecti ve servi ce is fi ve mi nutes. Station Station 1 13050 Community Road Station 2 169 12 Ol d Coach Road Response Time 4-5 mi nutes 9-10 mi nutes 1 Based on P o l i c e and Fi re Servi ce s, Bueh ler Pl anning Area , prep ared by PRC Engi neeri ng, Inc., August 1984. 4-91 2() .. ,: Rancho ..--.. /' -. � .• -;"---r .-"-'- . -� �: . . . �:r,:: .. " ('\:::::/ w . -, Public Faci lities >--.. ./ --- 'H HIgh School J Junior High School E Elementary School F Fire Station S She riff Ststlon ;'_, P Park ._ L Library ,----....-_.,-29 M Hospita l ,,' ..-' W Water Treatment Plant --,;:+---"---I '-;--'---r · We lton Reservo Ir :;�� ;t-<t' ••• Wa ter Facilitie s / J:.l /' .� . 31 /:� .....;. � -V ' .... __ �. 00 Wastewater Fac lll1ies -SDG&E Tr ansmission Linea • SDG&E SubstatIon SOUTH POWAY PLANNED COMMUNITY EXHIBIT 28 Two add it i Dna 1 f1 re stat ions are pl an ned but no land has yet been pu r ch ased f o r their location . One si te is pl anned fo r western Poway at Cami no del No rt e Road by about 1988. A s ec o nd st at ion wi ll probably be bunt near the Highway 67 corri dor , howev er , no pl ans have been confi rmed .1 Pe rsonnel . To gether the fi re stat ions have 30 ful l-t ime pal d p e rs o nnel incl udi ng three ch ief offi cers , one fire i"spector, and one secret ary. Th ere are 29 vol unteer fi re -fi ghters . At each sh ift. there is a si x-per son team at Stat ion 1 and a three-person team at St a ti o n 2. The ma in fi re station at Comm unity Road has one paramedi c un it wi th two pers onnel . Eq ui pm e n t . Th ere are two 750 GPM Cl ass A re serve pumpers , two 1,500 GPM Cl ass A pumpers , two brush f1 re f1 ght 1 ng ri gs , one res erve brushfi re f1 ght - i ng ri g. one wa ter tan k e r , one paramedi c amb ul an ce . ambul ance, one rescue ri g, and four st aff vehicles. be operat ed wi th th e personnel on hand at each shi ft . on e res erve paramedi c Al l equi pme nt can not Serv ice level . Th e level of fi re prot ect ion servi ce is ev al uated by two criteri a: the ab il ity of the d e p a rt ment to respond to a cal l wi thin si x mi nut es and by the Ins u r an c e Serv ice Organization (ISO) rat ings . If the six-mi nute response time is achi eved , the current serv ice level to that area meet s t h e fi rst criteri on . The Po way Fi re De partment cu rrent ly achiev es an ISO rating of 4 and has set a g oal of at tai ning a better ISO rating of 3 . (The ISO rati ng is a co mp lex eval uati on of fac il ities, equi p ment . serv; ce . need , et c. 1 n an area .) I!p acts PrOj ect Impa cts . fo llows : Impact s associ ated wi th the pro posed project are as 1. D e velopm e n t 1 n th i s area wl 1l 1 ncrease personal and property damage hazard-from brush f; res es peci al ly wnere there ;s res ; dent ial use and interface with open space. 1 Te lephone con versation wi t h Bi ll To on , Safety Se rvi ces Department , City of Poway , October 1984 . 4-92 2. The propos ed proj ect wou ld requ ire some addit ional pers onn el and eq u ip ment in order to mai nta in the current service level . One truck com pany may be re qui red . 3 . The proposed devel opment may ultimately creat e a need for a new fi re stati on in the area . 4. New roadways proposed by the project wou ld benefi t acc ess to the site by fi re -fi ght ing eq ui pment . Cumulative Impacts . Growt h and de v elopment in the ci ty of Poway can be expe ct ed to increase demand for fi re prot ecti on pe rsonnel , eq ui pme nt and fac i lities. Occa si on' for ai d needed from the San Oiego Fi re Depa rt ment can be e xpected to increase insi gni fi c antly. Proje ct Al tern ati ve s. Any add itional de ve lopment wou ld increas e ha zard from local fi res and all al ternati ves provi de the benefit of road improve ments . The hi gh intens ity Al ternati ve (3) co uld re qu ire ad ditional pe rson ne l and equi pme nt whi le Alternati ve (1) wou ld reduce fi re protect ion re qu i rements in compari son to the proposed proj ect . Mitigati on Meas ures Miti g at ion measu res shall at least incl ude the fol low ing: 1. Dedicati on of approximately two ac res to the Safety Services Depa rt ment fo r con st ructi on of a new fi re prot ect ion faci l ity (Safety Serv i ces re corrm ends ded i cat ion of an area in the eastern porti on of t.he si t e); 2. Conti n uati on of the Automat ic Ai d agreement wi th the ci ty of San Oiego until al l porti ons of the site can be adeq uately se rved by the ci ty of Poway ; 3. Al l -weat her access provi ded to al l de vel opme nt areas , incl u di ng ru ra l res ident ial si tes ; 4-93 1. Adopt ion of the proposed c i ty of P ow ay Security Ordi nance; 2. I n st al l at i on of s ec urity al arm sy ste ms on al l corrmerci al bu i ldings ; 3. Use of s ec urity li ghti ng on al l parking lots . pathways an d tral 1s throu gh commercial /indu stri al areas ; 4. Provi sion of c l e ar l y ma rk ed st reet names and nu mb e r s to enh an ce pol 1 c e i dent; fi cat 1 on ; 5. Siti ng of landscapi ng, p a r k i n g lots , and wa l kw ays to maximi ze ped es tri an and auto saf ety ; 6. Or g a ni z at ion of Nei ghbo rhood Watch Programs in re s i de n t i a l are as and crime pre ve nt i o n pro grams in industrial and commerci al areas. 4.12.3 Publ fc Uti 11tfes Exi sti ng Con ditions ELECTR ICITY AND NA TURAL GAS 1 Na tural g as a nd e l ect r i c i ty are cu rrent ly suppl ied to the area by San O i ego Gas an d El ect ri c. One 230 kV and one 69 kV el ectri cal t r a n smi s s i o n f ac ilit y traverse the s ite wi thi n ri ghts -of-way 200 feet and 12 feet wi d e , respecti ve ly . The nearest su bstation servi n g the ar e a is l o c a ted on Twfn Peak s Road at Budwi n Lane . Natu ral gas lines cu rrent ly serve re si de nces adj acent to the prop osed project si te. The location of tr ansmi ss ion lines whi ch wou ld s e r v i ce the s i t e can be det ermi ne d at the tent at 1 ve map pl an ni ng stage . TELEPHONE 2 Tel ep hone se rvi ce is p rovi d e d to the area by P a ci fi c Te l ephone C ompany . The ne a rest t ran smi ss i o n faei l ity appe ars to be l o c a t ed at CQI1I11un ity Road and the s witch ing offi ce is located at 14010 Mi dl and Road . 1 Corresponden ce wi t h San D i e g o Gas an d El ectri c C o •• John Dawsey, Donna McG ui r e. and te l ephone conversati on wi th Jay S h e p p a r d , October-Novem ber 1984 . 2 Correspo ndence wi t h Rick Hi ll� No vembe r 1984 . 4-96 CAB LE TE LE VIS ION 1 Cable televi si on serv ice presen tly is not avai labl e on th e p roj ec t site , howe ver, there are existing faci lities ad jacent to the site. These faci li ties, p ro vi ded by Cox Cabl e San Di ego , are in a posi ti on to serv ice the proj ect site area. See A p p endi x B for a speci fic list o f the bas ic and premi um channel s av ai labl e. hJ)acts De v e lopme nt of the p r o p ose d proj ect wi ll place si gni ficant addi ti onal deman ds fo r el ect ri city. natu ral gas . and tel epho n e servi ce upon these uti liti es . ELECTRICITY AND NAT URAL GAS Pri or to bu fldou t,'a new el ect ri cal SUbstat ion may be re qui red in the project s i t e vi c ;�ity as wel l as transmi ss ion li nes for electri city and natu ra l gas . The fo llowi ng tabu lates the amo unt of energy ex pect ed to be u t i liz e d at the prope rty u p on bui l dout of t h e de ve l opment . Table 27 ESTI MATED ANNUAL ENERGV CONS UMP TI ON BY PROPOSED PROJECT Land Us e Resi denti al COlllTlerci al Industri al TOTAL TELE PHONE Elect ri ci ty (Mwh /yr) 1.6 4.9 57 .4 63 .9 Mw h/yr Natu ral Gas (Mcf/yr ) 21 .8 13 .1 366 .6 401 .5 Mcf/yr Some ease ments may be re qui red for 1 ocat i n9 smal l ho usi ngs of tel ephone eq ui pment on the site. Ph a Sing of the de ve lopment is ant ici pated to al low Paci fi c Telep hone to as sembl e an d instal l the neces sary equi pment . Some l i n e extensi on c h a r ges may be ap pl i cable. 1 Correspondence wi th Bruce W. Wi nter , Pl anni ng a nd D e ve l o p me n t Supe rvi sor (S ept embe r 198 4). Cox Cabl e, San Diego. 4-97 CAB LE TE LEVIS ION De velopment of the proposed proj ect al so wi ll res ult in an incr eas ed demand for cable tel evi sion and wi ll req ui ,.e the exten sion of a conduit sy stem and one te levi sion o u t l et in each dw ell ing wh ich wi shes to obt ai n this service. Mi tigati on Me asures 1. Develo pment of th e propo sed project shou ld c o mp l y wi th the energy s a v i n g res idential b u i l d i n g st andards outlined in T i t l e 24 of the Cal iforni a Admi ni st rati ve Code . 2. El ect ri ci t y. n at u r a l gas, and tel ephone extensions and di stri bution sy stems should be prov ided in coordi nation wi th phas ing of devel op ment . 3. Ene rgy-effi ci ent structu res shou ld be construc ted u t i l i zing bot h bu i l d i n g desi gn and s i t i n g . and l a n ds capi ng des ign such as: a. tak ing ad vant age of heating/co ol ing by sun/wi nd ex posu re; b. uti liz ing energy-ef fi Ci ent light ing sys tems; c. incorporating sol a r water heat ing sy stems as fe as ibl e or co nstru c tin g bui ldi ngs to al low easy instal lation of such sys tems later . 4. Project architects and pl anners shou ld comp ly wi th SDG&£ re conmenda ti ons for app lying energy cons ervati on techn iques . 5. Ful l advantage shou ld be t ak en of op portu ni ties to ut i 1; ze co gene ra ti on or heat exch ange sy stems wi thi n indus tri al and conmercial land uses. 4.12.4 Sol fd Waste Exi st fng Conditi ons 1 Cu r r ent l y the site p rod u c e s large ly undevel oped stat us . mi ni mal amounts of so l id wast e due to its The area south of Poway Road in the city of 1 Te l ephone co nversat ion with Dave G ro s s m a n . Engi neer. West Mi ramar Sol id Waste Di sposal Faci lity. Oct ober 1984 . 4-98 Poway is wi ttl; n t h e servi ce area of W es t Mi ramar Sol i d Waste Oi sposa 1 f a c i lity . Th is f a c i l i ty is op e r a t ed by the ci ty of San Di ego a nd is l oca ted south of Mj ramar Nava l A i r Stati on at 5180 Mercu ry St reet , San Di ego. Mai nly two ru bbi sh co ll ecting com pani es provide servi ce to the p r o p o s e d proj ect vi c i ni ty : San1 -t ai ner and Mas hburn Sani tat10n comp ani es . The West Mi r amar Sol id Waste Di spos al faci lity opened in Ju ly 1983 w1 th an estimat ed life e x p e ct a n cy of .: 15 years . C a p aci ty of th e land fi ll is ap proxi mate ly 35.500 ,000 ton s of sol id waste ; t o t al ton nage to date (Oct o be r 1984 ) is about 1,5 00 ,000 ton s wh ich leaves a rem aining 34 .000.000-ton capacity. (Estimat ed t o nna ge of so lid waste gene rat ed per person per ye a r is app roxi mately one to n.) The West Mi rama r landfi ll ;s a C l as s 11-2 d i s pos a l faci lity wh ich ac c epts hou seho ld ref use. de compos a ble trash , a n d cons tru ct ion and de mo11ti on materi a1 s. No haz ardous wastes are d i s pos a l fad lHy in nea re st proximi ty located in S a n t a Barba ra Cou nty . IlIJJacts acce pted. The hazardou s w a s t e to the proposed proj ect site ;s I m p a c t s due to the di s p a s a 1 of sol i d wa ste f r om the proposed p r o j e c t si te include the fol lowi ng: Projec t I mpa ct s . The proposed proj ect wou ld g e n e r a t e s1 gn; fi cant vol urnes of sol ld w a s t e wh ich w o u l d requ ire d i s p o s a l in local landfills. Comp lete bu ildout of t h e project is not an tici pated f o r 15-20 years. therefore max i mum impact p o t e nt i a l wou ld not be reached u n t i l af ter the proj ected cl osu re of the West Mi ramar landfill . It Should be noted t h at San Diego Energy Resou rces is propos ing an inci neration proj ect at t h e West Mi ramar f a ci l 1ty . Implement a ti on of th is proj ect would extend the West Mi ramar l i fe expectancy. Other a r e a landfi lls wh ich are near enough to recei ve project-gene rated sol id waste are the Ramon a landfi ll. nort h ea s t of Poway in S a n Diego Cou nty� and the San Cleme nte Cany on land fi ll wh ich is bei ng consi dered in Santee. 4-99 Indus tri al land u s e s proposed by the proj ect are ant i c ipated to gen e rat e hazarouds was tes in qua n t i ty and q u a 1 i ty cOtmlensurate wi th the type of i n d u s t ry . The n e a rest hazardous waste fa ci lity is located in S a n t a Barbara Cou nty . Ta bl e 28 on the fol lowi ng page i l l ust ra t e s Uworst ca s e " sol id was te g en e r at i on at bu i l dout (A lternati ves (1) and (3) are incl u d ed he re fo r easy re fe ren ce ). Cumulati ve Impacts . Res i dential devel opme nt in the area can be ex pect ed to generate sol id w a s t e at an approx imate ra t e of one ton per p e r s o n each year. These was t e s as we ll as com e r c i a l and industry-g ene rated wa stes mu s t be col l ected and remo ved · to area 1 and fi 11 s such as West Mi rama r a n d Ramona . Additiona l was tes not accounted fo r in gr ow t h projec tions used in des; gn of the 1 and fi 11 s can sho rten the life expectanc; es of these fad 1i ties wi th cu rrent o p e rati o n met hods . P r oj e c t Al ternati ve s . Impacts as s oci ated wi th A l t ern ati ve (3) wo ul d be c omp a r a b l e to t hos e of the prop osed al terna ti ve . A l ternat ive (1) would gene rate on ly re si den t i a l waste . Refer to Tab le 28 for solid wa ste generat ion. Mi tigati on Measu res Miti gation measu res to al l evi a te sol id waste ge n e ra t ed by the proposed pro ject should incl ude encou ragement of r ecy c l ing in resi den ti al, corrrnerci al and industri al uses . Sep arati on of recycl a ble ma t eri a l s at the site or in the landfi ll proces ses cou ld extend the life of t h e land fi ll a s wel l as conserve re sou rces . Impl ement at ion of the p ro p o s e d San Diego Energy Resou rces inci nerator at the West Mi ra mar faci lity wo uld al so extend the life expectancy of t h e landfil l. 4-100 Table 28 S (L 10 WAS TE GENERA TI � Proposed A lterllat; ve (3) Al ternati ve (l} GeneratIon Popu l at j on Ton ... / Popu lat ion To ns/ Popu 1 at ion Ton s/ Land Us e Factor E�l o;[e es Year E!!]!lo�ees Ye ar EmQl o;[ees Yur Res; dent ! a 1 toni person/ tn6 816 2,220 2,220 774 774 year C Dlllllerci a 1 / 3.B tD"S /�p 'oyee 900 3,420 1,215 4,617 0 a Of fIce year Indu strial 7.6 ton5/eP!ployee/ 12 .300 93,480 12 ,900 98,040 0 0 ye a r TOTAL 97 ,716 104 ,877 774 4-101 4.12.5 Pa rk s and Recreat ion Existing Cond 1tions1 The ctty of Poway has 457 a c re s of de di cated pa rk land ; 21 of the acres are d e v e lope d . Tne maj o ri ty of th is land is in the L a k e Poway /C l y d e E. R e x rode Wi l de rnes s Area . Th is is a reg i on a l pa rk whi ch incl udes fi shing, b o a t i n g . pl ay groun ds , picnic areas and trai ls. Incl uded in" the Poway Com mu nity Park and Center are baseba ll fi el ds , pl ay grounds, a co rrrnuni ty ce n te r, an aud ito r ium. and the We i ngart Se nior Citi zens C ente r . There a r e also pl ayg round areas and ba ll fi el ds in Garden Roa d Park wh ich is just north of the pro p o sed proj ect si te. Two a dd i tion a l parks in c lose prox i mi ty to the site are Poway C OlTlTl u n ity Park . 1 oca ted " just no r th of Metate Lane and th e Ponds Pa r k , wh ich ;s west of Pome r a d o Road . In addi tion to p u b lic parkl and . there are abo ut 242 a cre s of pri vate re creat ional a r eas . Poway Un ified Schoo l District is another large provi der of park land since " " the faci l i t i e s are free for pu bl ic use in the e ven i n gs and on week ends . Tab le 29 i n d ica t e s the names and si zes of parks s e r vi n g Poway . Table 29 PUBLIC RECREATI ONAL FACILI TIES Lake Poway/Rexrode W i ldern e s s Area Los Arbol 1tos Pa rk Communi ty Pa r k Garden Road Park Pano rama Hi lls Park The ,",onds Park TOTA L 380 a c r e s 38 ac res 28 a c res 5 ac res 5 acres 1 a c r e 457 a c r e s The city of P oway pa rk and recre ation goals incl ude the f o l l o w i n g stan da rds for re c r e a ti o n areas : 1 B a s ed on Poway Compr ehe nsi ve Pl a n, 1983 . 4-102 Tab l e 30 CITY PARK STANDARD S Ac re s per Size of Type _________ , __ l...!OOO ?o�_. _____ S ite Pl ay g rounds 1.5 2 Nei ghborh ood parks 2.0 15 Pl a yfi el ds Conrnuni ty parks D i s t r i c t pa rks 1.5 3.5 2.0 10 40 100 Ra dius of Area Se rved .5 mi le .5 m i l e 1.5 mi l es 2.0 mi l e s 3.0 mi l es E!.E.J ��_mp�c t� • The add it i on of 816 new re s i dents 1 i n t o the p roposed South Poway P l a n n ed Commun ity woul d req u i r e new parks . Based on the assumpt ion that pa rks and r e c r e a t ion standards are present ly met in Poway , the s e new res i de nts wou ld requi re 8.6 ac res of addi tional park lands to ma intain th ese go al s. Cumul at�.!!�I ��cts . L o c a l devel opment s wi 11 pu t i ncre a s i ng pres sure on Pow ay to me et the es tablished goal s but i mpa c t s are not consi de red si g ni f i cant . PrOj ect Al ternati ves Th e low i n tens i t y Al ternati ve (1) wo u l d re qu ire an a d di t i on of 8.1 ac res o f p a rk l a n d s and the hi gh inten sity Al ternat ive (3) wou ld req ui re 23 .3 acres ba sed on the abo ve ass umptions . Mi tigat ion Measu res 1. App roxi mately 8.6 a c re s of the proj ect si te s h o u l d be con served as open space for natural a r ea s and trai ls wi th a s s oc i a t ed rec reat ional uses or des ; gn a t e d specifically for park land s a n d /o r the proj ect pro pon e nt should p ay fees in l i e u of park l and dedi cation. 2. P r i vat e rec reati onal fac i liti es should be e n c oura g e d . -------- 1 Based on 3.0 r e s i d ent s gene rated per househol d. 4-103 4.12 .6 School s Exi s ting Conditions The p ro p o se d proj ect site is located wi th in Poway Un i f i ed School Distr1 ct (PUSD). T h e PUSD encompas ses R a n c h o Berna rdo and Rancho Penasqu1 tos in the ci ty of S a n D 1 e go as w e ll as tne ci ty of Poway . Most of the school s wi thi n t he · district are near or o ve r c a p a c i t y . C u rre n t ly planned are o n e el emen tary school by 1986 . one or two el ement ary school s wi th in fhe to ten yea rs , and a hi gh s c h o o l and mi ddl e school w1 t hi n ten ye a r s .1 PU SD impl emen ts a devel o per ls fee t o off set costs of pro viding ed ucat ional fa cil ities for new proj ec t-generated stu dents •. Us.1 ng PUSD gene rat ion fa c tors . impact s to sc hool s in the di strict were esti ma ted. These s t u d ent s wou ld attend Val ley El ementary School J M e ad o w broo k or Tw in Peaks Mi ddl e School s. an d P o way Hi gh School . Project Impa ct s. The pro posed proj ect wou l d increase demand for educa tion al staff and perh aps requ ire new fac i lit ies. The proposed resi dent ial uses are ex pec ted to gen erate 150 students ov eral l. Ta bl e 31 s n ows an tici pated student numbers by grade level fo r the prop osed proj ect pl us Al ternati ves (1) and (3). Tabl e 31 STUDENT GENERATION Generat ion F a c t o r 2 Stu dent s Gen erated School Level S1 n91 e Faml l�3 Mob i le Home P ro�o s ed Al t Pl Al l (K-12) .63 .1 9 }50 163 E lem en t a r y .27 .07 64 70 M i dd l e .13 .05 31 34 H i g h .23 .07 55 59 1 Tel ephone co nversat ion w i t h Step han ie Au s t i n , Poway Un ified School Di strict, Octobe r 1984 . 2 From PUSD data, May 1984 . 3 Two+ bedrooms, detac hed . 4-104 Al t( 3} 444 190 92 162 Cum ul a tive Impacts . By the y e a r 2000 . ro ughly 40,000-60 ,000 new dwel ling units a r e estimated to be bui l t wi thi n PUSD. Th is wou ld g i v e ri se to many st u de n t s that mu st be a c c o mm od a t e d by the school d1 str1ct. Proj ect over al l. Al ternati v es . Al t e r n ati v e (l) wou ld Alternative (3) wou ld add 444 stu dents . Mi tigati on Measures generate 163 st ude n t s Refer to T a b l e 31 . 1. Po way Unifi ed School Distri ct s h o uld cont inue to re q u i r e de vel oper's f e e s to al l evi ate increasi ng need s for edu cat iona l fa ci liti e s. 4.12.7 Library Exi st ing Cond1 tions1 The c o u n t y of San Diego Library Sy stem operates the Poway b r a n c h library. This branch is located in L i v e l y Center on P owa y Road . T h e re are c u r r e n t ly no pl ans for bui lding new fa ci liti es ; however , t h e r e is a pl anned s i te for another branch in Poway in t h e Ci vic Center area � The Poway branch library has ap prox imat ely 38,500 vol um es of wh ich ab o ut 36 ,000 are Ci r cu l at ion vo l ume s. The library o c c u p ies approxi ma tel y 5.000 square fe et and p ro vid e s n ea rl y 40 seats . Proj ect Impacts . The proposed proj ect wa ul d ge nerate about 816 new res i dents . No si g nificant di rect impa ct s are anticipated . Cumul a ti ve Impac ts. Effects as soci ated with de v el o pm en t s in the Pow ay area coul d re qui re additional lib rary faci lities in the future, howe ver i mp ac t s are not co nsi dered si g nificant . 1 Tel ephone co nversation with Ernstlee Henshaw. Poway Branch Li bra ry, O c t o b e r 1984 . 4 -1 05 P roject Al ternati ve s. Wi th 774 and 2.220 n e w re si dent s gene rated by Al ternatt ves (1 ) and (3), re specti ve ly, no di rect si gni f icant imp acts are expect ed . Mi t1gat ion Me asures No mi ti gati ons are re commen ded . 4.12.8 Hospi tal s Exi st ing Condi ti ons l There are two hospital s wi t hin abo ut a ten -m; le rad ius of the proposed proj ect sHe. Pal o mar Hospi tal is located at the peri met er of th is radius in Escond ido . Pome ra do Hos pi tal is located about fi ve mi nutes fram the northwestern bo rde r ·of the site and wi 11 be the fo cus of this analy sis . Pome rado Hos pi tal se rves Poway wi th 130 be ds and ge ne ra lly ope rat es at be low 50 pe rce nt capacity. It is an acute ca re faci lity wh ich offe rs a wi de ran ge of care servi ces except ing psychi at ri c and pediatri c care. r..,acts No di rect impacts of si gni fi cance are an ti ci pated from the proposed pro ject al ternati ve or Alternati ves (1) or (3). CUrnJ lati ve effe cts are not con si de red si gn ifi cant . Mi tiga tion Measu res No miti ga tion me as ures are proposed . 4.12.9 Wastewater Inf ormat ion contai ned in th is secti on in re gard to exi sting and req ui red faci lit1es was provi ded by W.W. Fannon in the 1984 report Water and 1 Telephon e co nvers ation wi th Shi rl ey Watts . Pome rado Hospi tal Ad mi ni strat ion, Octobe r 1984 . 4-106 COLLECT ION FAC ILITIES Wast ewat er fl ows from a co llect ion sy ste m whic h ex t e n ds th ro u gh o ut the dev e l o ped areas of Poway into the P o way Trunk Sewe r wh ich pa ra lle l s Poway Creek past the abandoned tre a tment plan . The Poway Tru nk Se we r cu rrent ly con nects to the Pen asqu i tos Interceptor Sewe r wh ich transfers the wast e water to the Met ro Sy stem . Capaci ty in the Penasqui tos Interceptor and th e Poway Trunk vari es from section to s ect ion but ave ra ges 8 mgd for the interceptor and 5 mgd for the trunk . l!!!pact s Wa stewa ter treatment pl ant s a re de si gned to treat average da ily fl ows and f luc t u a t ion s in fl ow resu lt in f l uctuat ions in effl uent q u al i ty . The hy draul ic ci3 paci ty of wa st ewa ter transmi ssion lines , however . is de si gned to a cco nrn o d ate peak fl o�s and ext reme fl uctuati ons cou ld resu lt in ba,ckup o r overflow. Impl ement ati on of the proposed proj ect wi ll req ui re the pro vision of wast e wat er d1 sposal serv i ce to an area not currently served . AccomJTlo dat i on of the project-generated wa stewat er wi ll re qui re c;onst ructi on of a col lecti on syst em wh ich ext en ds to the cu rrent f a c i l i ti es and pro vi si on of was tewater treatment and di sposal . Prel imi na ry grading conce pts indi cate that wa ste water pumping wi ll not be re qui red on the proposed proj ect si te and det ai led plans wi ll be de s ign e d such that any pumpi ng that may be neces sary is mi nimi zed . Wast ewat er fl ows from the proposed proj ect duri ng dry we ather co ndi tions are shown in the fo ll owing tabl e. Tab le 32 WA STE WATER FLOW PROJ ECTIONS Land Use Un its or Ac re s --'-----:;....::---- Re sidential 27 2 d.u Commerci al 28 ac . Ind ust rial 644 ac . TOTAL Fa ctor 270 gd 2,500 gd 1,000 gd 4-108 Dai ly Wastewater Fl ow 74 ,000 gallons 70 ,000 gal lons 644 ,000 gal l ons 788 ,000 ga 11 ons The potenti al en vi ro nmental impact s associ ated wHh t h e provl slon of wast e w a t e r service to the proposed project site i n cl ude the fo llowing: 1. lon g-term increased demand on fa ci lit i es ; avai labl e wa stewater treatment 2. I n c r e me n t a l cont ri bution to f l o ws in the col lec tion sy stem in the ci ty of P ow ay . the s ubs equent t r a nsmi s s i on lines , and the Poi nt Loma treat men t pl ant as we ll as contri buti on to th e cumulati vely c r e a ted ne ed for ad di tional infrastru ctu re and faci liti es ; 3. S h o rt -t e r m co nst ruction impact s s u c h as noi se and dust a sso c i a t e d wi th li ne placement on the proj ect si t e ; 4. Pot ent i a 1 growth-1 n d u c e me n t impacts associ ated with addi ti on or imp rovement of infrastructure either di rect ly or indi rectly serving the proj ect site; note th at the ma j o ri t y of t h e area s u rro und i n g the proj ect site is e i the r bui lt out or deSi gnated for p lanned or pendi n g growth. Cumu lat ive Impacts . Cum ul ati ve impact s incl ude an a r e a w i d e increase in was t e wa ter flows through the c i t y of Poway c o lle ct i o n faci liti e s, the Poway Trunk . the Pena squitos I n ter ce p t o r , an d the Poi nt Lorna Tr eatment Plant. These increased fl ows from t he area incremental ly add to the need for be tter or l a r g er faci lit ies. Ad di tion o r i m p r o v e m e n t of infrast ruc t u re in the area will c umu la t i v ely induce growth in the area . P r oje c t Alt ernati ves. The i m pa c t s as soci ated wi th de vel opment of Al terna ti ve (3) or (1) wo uld be very simi lar to t h o s e of the proposed al ternative except that more or fe wer faci liti e s and wa stewat er capaci ty wo uld be re qu ired . A l te r n a t ive (3), the hi gh intens ity d evelo p m e n t wou ld generate app roximately on e mill i on gall ons of wa stewat er pe r day wh il e Al ternat ; ve (1) w o uld gen erate about 70 ,000 g a l l o n s d ai ly . Mi tigat ion Meas ures 1. Th e was tewa t e r faci lit ies recofllTlended in the Fa nnon report should be i mp l em e n t ed inc l u d i ng lines co n n e c t ing the pro j ect site to the exi sti ng P o way Tru nk Se wer a nd Penasqui tos Int erce pt or . Eventual ly. pa r a ll el pi pe l i n e s wi ll be req ui red to create additi onal c apa ci ty for thi 5 sy stem. 4-109 2. Funding fo r the s e improvements s h o u l d be b orn e jo intly by th e p r oj e ct propone nts and the city of Pow ay . The proponents shall prov ide linkage to offsite faci lities. 3. C o n str uct i o n of on site improveme nts shou ld b e sched uled in co njuncti on with project implement at ion. 4. Th e project proponent shou ld co ntri bute toward o f f site improvements demanded by the p ro ject . S. The proj ect proponent shal l pay t h e st and ard sewe r con nection fees wh ich cont ri bute to co nstructi on of new pipel i nes and pu rc h a s e of capaci ty ri g h ts . 6. Any offs ite improvement s sh al l be cl osely coord inated wi th and su bj ect to fi nal approval by the city of Poway . 7. Po l ici e s and regul ati ons of the Poway Water Cons ervat ion El ement and the State Water R esou r c e s Board shall be ap plied and incorporated in the bui lding of stru ctu res and site deve lop me nt in or der to reduce the proj �ct 's wastewat er c o l l e c ti o n and tre a tmen t req ui rements . 4.12 .10 Water Informati on re lating to ex isti ng and necessary faci lities is a g a i n pro vi ded by the W.W. Fannon report contained in Ap pe ndi x K. It is as s umed that t h e ci ty of Pow ay wi l l pl a n, de s ign, and operate these fac i lities . Exf sting Con ditfons RE GIONAL WA TER SUPPLY Potable water supp ly to users in the re gion is primari ly f r o m th e Metropol itan Water Di st r ict of Southe rn Cal iforni a (MWD ), wh ich imp o r ts water from t he Feather Ri ve r sy stem in no rthern Cal i forn1 a throu gh t h e St ate Water Project . and from the Col orado Ri v e r . In 1960. MWD contracted with the 4-110 Cal ifornia D epar tme nt of W at e r Resou rces for eventual de l i very by 1990 of a maxim um of about two m i l lio n acre-feet per ye a r of n o rth e r n Cal ifornf a water into the di strf ct 's sy stem. Current ly , the di s t r i ct recei ves ap prox imate ly 700 .000 acre -feet per year from n orthe rn Cal iforni a and 700 ,000 ac re-feet per ye ar from the C o l o rad o Ri v er. Whi le MW D has con tracted for a ce r t a i n quanti ty of water , the actu al amou nt of water avai 1 ab le for de li ve ry is expected to be less wi th out the P e r iph e r a l Canal portion of the State Water Proj ect . Al so, wi th completion of the Cent ral Ari zona P ro j e ct in 1985 , MW D ",i ll lose a p o r ti o n of its w at e r en tit lement from the Co lorado R i v e r . Thi s reduct ion wi ll c ont r ibute fu rther to longer term p ro b l ems of r e g i o n a l water supply. Th e San Di ego County Wat e r Authori ty (CWA) is an MWD membe r agency. The d i s t ri but i on system of CWA cons i sts of the extensi o n s of the aq ueducts from the MWO deliv ery poi nt t o the sou th end of San D ieg o Co unty. inclu ding an extensi ve network of reservoi rs and pipel ines . CITY OF PCltJAY Water servi ce in P o w ay was o r i g i n a l l y provi ded by the Poway Mu nici pal Water Di stri ct but was ab sorbed by the city of Poway upon i n c o r p orat i on . Th e water s y s t e m 1S we ll engi neered and wel T ma intai ned. S e r v i ce is p r o v i ded by uti lizing a r e s e r v o i r , treatment pl ant , di stribu tion s ystem , and distri but ion sto rage re se rvoi rs . The ma j o r i ty of t h e water s u p p ly is obtai ned from the San Di ego County Water Autho rity (CWA). About fi ve p e r c e n t of th e ci ty I s wat e r s u p p ly is obt ai ned from local run off into Lake Poway . This reservoi r serves as a s t o r a g e ba sin for CWA water as w e l l as re c ei vi ng local r u n off . The city o pera tes a wat e r fi l tration. c oag u l a ti o n . sedi ment at ion plant whi ch fi l ters and di si nfects the water pri or to di stri buti o n. The e xi s t i n g fi l tration plant, the Poway Water Treatment Pl ant . has a rated c apaci ty of 24 mgd whi en wi 11 su pport an a ve rage dai 1y fl ow of ab out 10 mg d. (Abou t 200 g a l lon s of water is uti lized per day per capita.) The p l a nt was const ructed such that it co uld be mo d i f i e d to tre at 36 mg d but 4-111 curre ntly the ci t y has no pl ans for ex pansion. In add ition . up to 8 mgd of water is prov i ded to the Ramona Mun ici pal Wate r Di strict by wh at is c o ns ide red an inte ri m arran gement . Di stri but ion is accompl i shed vi a a re lati v ely new pi pel ine network . The sizing and layo ut of the sy stem curre nt ly prov i des adequa t e supplies and pressures th roughout th e serv ice area . The re "are ten d i st r i b ut i o n sto rage re servoi rs wi thi n the system ; the We lton Reservoir is located in the n o rth e a s t e r n portion of the p r o p o sed project site. IlIlP acts Imp l ement at ion of the proposed p r o j e c t wi ll co ntri bute to re gi on al wat er dem a n d wh i le wa ter is antici pated to be come increas ingl y low in suppl y . In additi o n, wa ter service wi ll be requi red in a n area not cu rrent ly s e r v e d . On site de vel opmen t wi ll dema nd water fo r several pu rposes . Fl ows to de vel o p me nt include wa ter uti lized in re si dential, cOl1Tllerci al and industri al land uses as we ll as si zable fl ows ut ili zed in landscape i r ri gat i o n . La rge quantities of wa ter must al so be avai lable upon "dema nd for fi re fi ght ing pu rpo ses . Uti lizing a v e ra g e va l ues bas ed on Poway and ot her mu n i cipal ities the fo ll o w i n g des ign flows we re det enni ned for the proposed pro ject . Tab le 33 WATER FLOW PROJ ECTI ONS _L _a�nd __ U�s�e� ____ �U �n�i �t s�or �A �c �re�s� ____ �F�a�c�t�o�r �s ________ �o a�i�l�y �W �a�t e�r�U�s�a�g �e __ __ Res i dential 272 d.u. 500 gd 136 ,000 gal l ons Commerci al 28 ac . 3,000 gd 84 ,000 g a l l o n s Industrial 644 ac . 2,000 gd 1,2 88 ,000 gal l o n s TOTAL 1,508 ,000 gal lons Di st ri bution storage (ie., storage tanks or r e s e r v o i rs on the di stributi on sy stem ) is nec essary for prov ; sian of wat er dur1 ng peri ods of peak fl ow . T a b le 34 indi cates estimates of di stribut ion s t o ra g e re qui red for the proposed proj ect . 4-112 -; .-< Use Fi re fl ow Devel opment storage TUTAL Tab le 34 WATER STORAGE PROJ ECT IONS Factor 2,000 gpm fo r 2 h r s . 40% of 1.6 mgd Wa ter S t orage 240 ,000 gal l ons 60 ,000 ga l lons 300 ,000 gal lons Th e project wi ll inc reme n ta lly pl ace additional de mand on the Powa� wa ter treatment faci lity but wi ll not necessitate expansi on of the e xi st ing fac ilit y or di stri bution sys tem . Wi thin the property bo undari es , pump s t a tion s , stora ge re ser vo i r s . and a di stribution sy s t em wi ll be needed . These fa ci l ities are gene r ally co nsi stent w i th the co ncepts de vel oped fo r the area in the Wate r Master Plan of the city. Const ruct ion of th ese fa ci l iti es wi ll have short-term impacts on ai r. wate r, and no ise qual ity. Cumu l at; ve Impacts . Th e proposed proj ect combi ned wi th ot he r de v el opme nt s in t he regi on wi ll cumulati ve ly add to re gi onal demands for wate r. The p ro j ect wi ll increme nta lly add to the de m an d fo r treated wat er from the Poway Water Treatment F a c i 1 ity and the de mand for t r a n sm i ssion fad 1 it; es . Addition or i mp r o v eme n t of inf ras tructure in the area wi ll cumul a ti vel y induce growth in the area . Project Al ternati ves . The impa cts of the hi gh and low intensity alte rna ti ves w o u l d be very simi lar to those of the propo sed proj ect exc ept for differences in wa ter demand and di fferences in pipe si zes requi red for di s tribu tion. Alternati ve (3) wou ld de m and about two mi llion gal l ons per day of wat er flow wh ile Al tern a ti ve (1) wo ul d re qu ire a b o u t 129 ,000 gal lons per day. Mitigat ion Measures 1. The wa ter transmi ssion fa ci lit ies recommended in the Fan non re port should be impl emented including dist ribution sto rage , rese r v o irs , pump ing stati ons , and di stri buti on li nes . A detai led wa ter supply service pl anni ng for the proj ect shal l occur duri ng the tentati ve map sta ges of processing an d wi 11 be su bj ect to fi nal ap proval by th e ci ty of Poway . 4-113 2. The proj ect p r o p o n e n t shal l be req ui re d to co nst ruct al l o n s i t e and o f f s i t e wa ter inf ra structure li nkages req ui red fo r transmi ssi on to ma ster pl anned wa ter fac i lities. 3. The proj ect pro pon ent shal l pay the st anda rd c onne c t i o n fees wh ich con tri bute towa rd ex pa n sion of the w at e r treatme nt faci lity and pipe- 1 in es • 4. Al l i mp r o v em ent s to the ex isting wa ter servi ce sy stem nece ssi tated by approval of the proj ect shal l be fi nan ced by t h e proj ect propo nents . 5. Co nstructi on of ons ite i m p r o v e me n t s shoul d b e schedul ed in con junction with proj ect impl eme ntation. 6. The p o l i c i e s and re g u l a ti o n s of t h e Poway Wat er Con servati on El ement and the St ate Water Resources Boa rd shal l be impl eme nted and i nco rp o r a ted in the bui lding of s t r u ctur e s and si te de v el o pme nt . I n c luded are 1 ow-fl ow show ers . 1 ow-fl ush to; l e ts . and wat er conservi ng app 1 i ances and i r r i g a t i o n sy st ems . 7. Wh ere feas ible, rec laimed water should be uti li zed fo r non-contact pu r p o s es such as irri gat ion and gravel was hing. S t r u c t u r e s shou ld be pre-p l umb ed for acceptance of re clai m ed wat er . 4-1 14 4.13 AESTHE TICS The vi sua l ana lysis of the proj ect area incor porated comput er-gene rat ed i sometri c vi ews , vi ews hed anal y ses and devel opment of several key cross sect ions by PRe Eng ineeri ng , Inc . These st udies ha ve be en cri ti qued. rev iewed . confi r�ed by fi el d observat i ons and suppl emented by photographs . 4.13 .1 Exist ing Conditions The PRe Eng inee ri ng comput er-gene rated vi ewshed a n a l ys is co nsi sted of the fol lowi ng st eps . The proj ect si te and i lTlJl e d 1 ate ly adj ace nt areas north to Poway Road were p1 aced ' under a gri d sy stem , consisting of 75-foot -square ce lls. The average e1 evat ion of each cel l was determi ned. Over 20 ,000 cel ls we re ev al uated and then encoded into the comp uter. Twenty -two ob ser vation pai nts surroun ding the proj ect s i t e were then selec ted . Sel ection was ba sed on the assumption that the ci ri ti cal obs ervation area fol l owed the he avi ly travel ed Poway Road to the north of the site, Pome rado Road to the we st (a city Scen ic Roadway/county Sc en ic Hi ghway ) and Beel er Canyon Road (a county Sceni c Hi ghway) to the south (refer to Ex hibit 29 ). The vi ewshed program then anal yzed each cel l in terms of its visi.bi 1 ity from the observat ion poi nts , based on the rel ati ve e lev at i o n of the cel l and the observati on po int and on the re lati ve po si tion of the ce ll wi th surro unding el evat ions . Each c e l l wa s then categori zed as "not visible ." "vi sible from one obs ervation poi nt ," "vi sible from two po ints ," etc •• up to "vi sible from ten poi nts ." as indicated by shades on the graphi c pri ntout. The program i den t i f i e s on ly visi b il ity and makes no eval uation of type or "qual ity" of vi ew, and is limi ted to eval uat ion of gro und-l evel el evations . Fact ors of ot her p oten t i a l ly obscuring fe atu res . su ch as b u i l d i ngs and vege tation, were not incl uded. The propo sed proj ect area cons ists of a maj or eas t-west trendi ng ri dgel 1ne di ssected by nume ro us fi nge r-l ike canyons . The ove ral l appearance of the vacant property is on e of ro l ling, ro unded hl lls bl an keted wi th gras sland scrub gro wth . Some porti ons of the area have been used for grazing. The north-faci ng sl opes form a di st incti ve vi s ual bo undary to th e ci ty of Poway . forming a natural back gro und to the ma in comme r ci al/resi dential 4-115 cent er of the ci ty. Together wi th the hi ll s su rro undi n g t he c i ty on t h e east and nort h . these north -fa cing sl opes prov ide the city wi th a di sti nc ti v e . rural atmosphere. Exhi bits 30 t h r o u g h 32 p r o v i d e pa noramic photo graphic vi ews of the p r ope r ty ; Exhi bit 29a maps the locations from wh ich the ph ot os were t ak e n . The mai n comm erc i a l area of the ci ty. ori ented linearl y al ong Poway Road . borders the proj ect area on the n o rt h . The area consi sts rna ; n ly of nei g h borhood or; ented one-and t wo -s t o ry cOlJlJlerci a 1 uses ; nterdi spersed wi th v ac a n t properti es . These vacant pro pert ies currently p r o v ide potent ial view cor ridors to the north-facing sl opes of the property . On the w e s t si de of the prope rty , Pome rado R o a d wi nd s through a val ley dotted with r u ra l ra nch-style homes . P am e r a do Road t h en cl imbs the stee p h i lls to the west , pro vi ding pa no ra mi c views of the prope rty. The sout h fa ci n g sl opes of the p r o p e rty fo rm the nor t h e r n side of Beel er C anyo n . a distinct ive s c en i c val ley wi th steep wa l ls and a w ide meanderi ng ri ver . Padre Transi t Mi x, Inc . opera tes a large aggregate mi ni ng faci lity in Beeler Cany on ; th is o pe ra t i o n appears as a l a r g e , open cut in the south fa c i n g sl opes of the pro per ty . Th is fa ci lity wi ll be in o p e r a t ion fo r several more years under an exi st ing use permi t. Th e northea st porti on of the pro perty is characteri zed by a northwest s o ut hea s t tren di ng ri d ge and pro m i n ent kno l ls, vi sible from Ga rden Roa d and a d jacent re s i d ent ial areas . The p r o p erty ca n al so be vi ewed from a distance from poi nts on Hi ghway 67 in the hi 11 s t o the east and from some re si dent ial homes l o ca t e d on hi lls north of the comme rci al cen te r. 4.13.2 IlIfJa cts In the analysi s of proj ect impact s, vertical cross -sec ti ons were made across the proj ect site to ill ustrate line-at-si ght views . Com pute r-gener ated isome tric vi e w s provided ob l ique aeri al vi ews of the p r o p o s e d p r oj ect el evati ons and r o a d confi gurations . (Exh i b i t s 33 th rough 35 ) pe r m i ts effects of the propo sed proj ect . A c o mb ined anal ysis of these pro du c ts comp rehensi ve as sess ment of v i s u a l 4-1 16 In gen eral . the de v el opment of the indust ri al /busi nes s park. conmerci al and residential areas , as proposed by the South Poway Pl anned Co","un ity Pl an. wi ll res ult in both short-and long-term visual /aesthetic impacts . 1. Short-te nn vi sual impacts incl ude: • Grading an� con struction acti vi ties proj ect . These short-tenn impacts de velopme nt progres ses th rough the site . duri ng devel opment of the wi 11 occur in phases as 2. Long-te rm impacts wi 11 re su It from : Landform mod i f1 cat i on in the fo rm of grad1 ng fo r de vel opment and the loss of as soci ated exi st ing ve get a tion. The introducti on of ornamen tal veget at ion in de ve l oped areas. The introdu c tion of industri al /busi ness park , cO!Tl1le rci al and re side nti al uses. The proposed proj ect en tai ls an overal l leve l ing of the major ri dge area encl osed in the loop road to en gi neer verti cal road al i gnments and to al low the north and south -faci ng slopes to act as a natu ral "screen ll to vi ews from the ci ty of Poway and Beel e r Canyon . Withi n the de ve l opment area , col l ector ro ads and graded pads wou ld be devel oped according to land uses proposed in each con cept . The proj ect wou ld involve grad ing large pads to accOlJlTlodate i ndustri a 1 u ses. At the west end of the proj ect J these areas wo uld be arran ged in the ci rcu lar pattern defi ned by the loop road . Other areas wou ld be arr anged linearly al o ng the east-west sp ine. Aesthetic anal ysis at the master pl ann ing leve l focuses on the vi sibi lity of the proj ect from su rrounding areas . The ae sthetic qual ity of the pro ject is dependent on how wel l the pro posal meets the objecti ve of retain i ng the pred omi nantly ru ral cha racter of the ci ty of Poway. Intern al ly, the proj ect should meet hi gh standards of industri al park de si gn and l andscapi n g. An ob jecti ve of thi s an alys is is to iden ti fy are as re qui r ing sp eci al des ign con si derations pu rsuant to subsequent detai led pl a ns . 4-117 ® @ Site Photographs SOUTH POWAY PLANNED COMMUNITY EXHIBIT 30 , ® Site Photographs · .. �"J . .;.f ..... �. .. I-• -. .' , . SOUTH POW A Y PLANNED COMMUNITY · '" ... �-,,:",;"' . .p :.' Site Photographs SOUTH POWAY PLANNED COMMUNITY .. , .. -:., .' .... -'.' , .'" .• '0 ., '; � '. -. ,', . : '" . .. ; 0. ... . , 05 OS .� " . -. , ' I,. , ;.,;: " . -:',', .. ... --' �, -', '.' ...... -, , . .. . -'" .,. '. , ..... I, Cro ss Section Locations A SOUTH POWAY PLANNED COMMUNITY G ... , , ... .-",:::2''.'' , c -_... -' o ; . --- -_.,-.--- '--- VlEW FROM THE NORTliWEST Isometric Views ._------- , ./" "tata •••• _-' VIEW FROM JUNCTION OF POWAY ROAD AND COMMUNITY ROAD SOUTH POW A Y PLANNED COMMUNITY ' . . ,', T.�n ,--."'- .-----. '--_ ...... "uti .......... --- --_.-.. --- '--- EXHIBIT 35 �o a d s The mo s t h i gh ly vi si ble areas of the p r oj ect area as iden ti fi ed 1n the v i e ws hed analysis wou ld be in the ma j o r access poi nt s. The South Poway Arteri al woul d req ui re a major cut in the west-fac ing s l o p e of t h e proj ect area . These cut slop e s wo uld be a s i g n i f i c ant change from the exi sting undul at ing slop e s . Th is cut wi ll , h owe ver', be v1 si ble o n l y from a limi t ed p o r ti o n of Pome rado Road . The two n o rt h acces s roa ds wou ld extend through no r th -south tren di ng canyons to the corrrnerci al center of Poway . el iminat ing some g r a s s land area and isol ated ri p a ri a n wo odl and . Both new roa d s wo uld be vi sible bri efly to travel ers o n P ow ay Road and Metate Road . T h e access r o ad on the west (extension of Comm un ity Road ) wou ld be vi si bl e on the ed ges of the tra i ler park located on the north site of M e t a te Road and to a s egme n t of Poway Road . Th e ro ad on the east wou 1 d be p o t e n t i al ly vi si b 1 e to an a r e a of scatt ered r e s i d e n t i a l homes and t o some ext ent on both Poway Road and Garden Road . The s o u th acces s ro a d must ex t e n d up the s t e e p south -faci ng s l o p e s of t he proj ect a r ea and w i 11 t h e re fo re ha ve h; gh vi s i bi 1 ; ty in Be eler Cany on and from a s egm ent of the So uth Poway Arteria 1 Scen; c Hi ghway. However , the ex; st i ng ag g rega t e m; n i ng ope ra t i on adj a c e n t to the proposed road has a s i gni f; cant 1 y greater ; mpact to the vi su a 1 q u a l i ty i n the south ern port i on of the project . The feat ure wi ll n ot be mi ti gabl e unti l mi ni ng operat ions cease . The south ac cess ro ad is des i gned to serve the Padre operat 1 o n (i n order to draw heavy truck traffic off of Beeler Canyon Roa d ) and a fe w re s; dences in the ea st end of the canyon . Se vera 1 ru ra 1 hom es wi 11 ha ve vi ews of the n ew south ac cess road . Th e proposed de vel opment area is su bstanti al ly screened from v1 ew f ro m the c e n t ra 1 cOlTITIe rc i a 1 co r ri dor of the c ity o f P oway and from Bee 1 er C a nyo n . Perimeter land form al te rat ions (eg •• c u t /f i l l slopes ) associ ated wi th t h e proj ect devel opment wo ul d be visi ble from certain obs ervat ion p oi n t s , but not from the ent ire c i ty . For ex ampl e. in the no rthwest end of the l o o p road (cr oss -sect; on FF Fi g ure s 33 and 34 ). the edge o f the loop road and 4.-118 to be the nation 's second best dark sky site. T he proposed proj ect is located approx imate ly 3 5 mi les northwest of the Mount Lagun a Ob se rvatory and ap p rox imat ely 25 mi les southwest of the Mo unt Pal omar Observatory. Cumul ati ve Impacts . The proposed proj ect si gn ifi cant cumu lati ve vi sual effect in is not ant ici pated to have a conj unction with any planned deve 1 opmen ts in su rraundi n 9 corrmu ni ti es . By itsel f. the proj ect wi ll not emit enou gh lig ht to be considered si g nifi cant to the ni ght sky. However. th.e cumulati ve imp act of exi sting and pl anned deve l opment in th e County of San Di ego , incl uding the proposed proj ect is cons i de red sign ificant , and wi ll cont inue to affect adversely the re search ac ti vi ties at the tw o observ ate r; es. Proj ect Alternati v es . Th e "hi ghll conce pt (A l tern at i ve 3) proposes a land use patte rn simi lar to the proposed proj ect , but with hi gher int e ns ity uses. Th e "l owu or ru ral -res idential concept (Al ternati ve I), woul d requi � numerous co llector roads and scatte red bui lding pads . In the "l ow" ru r al -res i dent ial co ncept (A lternati ve 1). devel opment would be vi si ble from certain surrounding observ ation poi nts , as we ll as the acces s roads di scussed earl ier. Depend ing on speci fi c plans . some co l-I· . lector ro ads and bui lding pads may be vi si ble but the low density use would ret ai n the ru ral charact er of the area. In ad di tion. bu ilding set backs and landscape screen ing can effective ly be ap plied at potential view corri dor areas for si ngl e-fami ly housi ng . For the "hi gh" con cept (Al t ernative 3 ), vi sibil ity impact s wou ld be simi lar to or slight ly greater than the proposed project. Peri met er are as , identi fied above , may be slig ht ly mo re vi s ible wh ere the devel opment boun dary extends fu rther th an in the propos ed proj ect . 3.13.3 Mi t1gat ion Measures Seve ra1 mea su res have be en incl uded wh ich mi ni mize the vi su al impact of the prop osed proj ect and project a 1 te rnat; ves . The no rth and south -fac; n9 s lopes are recorrrnended for retent ion in a natural state for th ei r vi sua l qu al ity. In large me as ure, preservat ion of these slopes su bst a nt ial ly 4-120 re duces vi sual effe cts from a ll su rro undi ng vantage poi nts 1 except perhaps some res i dent ial areas at h i g h e r el evat i ons in northern portions of the c1ty. The fal l owi n g mea su res are reconmended for the pro posed proj eet and al l proj ect al ternati ves. Roads : 1. Road improvement plan s sho uld mi ni m ize cut and fi ll sl ope requi rement s through al i gnme nts wh ich are sensi ti ve to the natu ral topography. 2. Cut and fi ll sl opes shoul d be contou red to bl end into the na t u r a l topo g r ap hy and prom pt ly re vegetated wi th na t i ve or 1 n t r od u c ed plant spec i es . 3. Landsca ped buff ers al on g porti o ns of the ro adway s shoul d be impl emen ted to screen views . 4. To meet the intent of th e c i t y I s Seen; c Hi ghways El ement fo r the South Poway Arteri al , gui d el i nes for the wi dth of a bu ffer al ong the a rt e r ial , the ty pes of land scapi ng mate ri al s, and wi dth of bul lding set ba cks shall be spe ci fied in the des ign guidel ines of the devel o pme nt plan. Cut sl opes shoul d be promptl y re veget ated wi th nat ive or natu ral ized ve get at ion com pat ible wi th surround ing open s pac e. Area s whe re ind ustri al or roadway dev el opment interfaces wi th open s p a ce or rural r e s i d e nt i a l land uses , speci al des ign co nsi derati on is requi red . At a mi nimum, the fol lowi ng mea su res are proposed : Proj e c t Perimete r 1. Potent ia 11 y vis; h 1 e ed ge s 0 f the 100 P rca d and ot he r peri mete r roads shou ld be screened wi t h ve getat ion compatible to the surrounding na tu ra 1 area . 4-121 2. Fi ll s lop e s shoul d be c o n t o ured to ap p r o x i m a t e as much as possible the exi st ing topography and p ro mpt l y re vegetated wi th nati ve or i n tro d u ced sped es . 3. Structu res near poten ti al ly v i s i b l e pe rimeter areas s h o u l d be scr eened wi th l a n d sca p i n g . and limited to one story in h e i g ht and/or s et back an ap propri ate distance from t h e de vel opment ed ge . 4. Use of nati ve p l a n t and tree speci es shou ld be maxi mized to the extent fe as i b 1 e. I nte rn a 1 Des i gn To create an ae stneti c al ly plea sing de velopme nt and to mi ni m ize the impact on d i s tant pan orami c vi ews . project des ign shou ld o b ser ve the fol lowi ng g u i d e l ine s : 1. L a n d s capi ng wi ll be provi d e d th roughout the p r o p o s e d deve 1 o p me "t to soften vi sual impacts and enhan ce t h e aestheti c character of the pro j e ct . Gu i del ines for the planni ng of project landsca pi ng and its mai nt enance are set f o r t h in t h e proposed devel opme nt standards text. 2. Al l u t i l iti e s shou ld be located undergrou nd . 3. Low pres su re sodi um l a mp s and l amp s hi e l d s shou ld be used in st re et a n d p a r king 19t l i g h t i n g to re spect the II ni ght sky" r equ i r e men ts of local observatori es . Consi derat ion shou ld be g i v e n to cont r ol l ing pri vate lignt ing th rough the use of CC &Rs and S hi e l di n g of l i g h t to di re ct i l l u mi n at i on d ow n w a rd . 4 . Roofs shoul d be con st ru cted of low-ref lect i ve llIateri al . an d mechani cal equ i pment shou ld be scree ned architect ural ly. 5. ArChi tectural deS ign, b u i l d i n g materi al s, s ignag e a n d e x t e ri o r light ing shou ld be subj ect to stri ct . harmo ni ous desi gn con t r o l s . to b e speci fi ed in the devel opment st andard s. or subseq u e n t detai led pl a ns. 4-122 5.0 ALTERNAT IVES TO THE PR OPOSED PR OJECT 5.1 NO-PR WECT ALTERNATIVE The Ca 1 i f orn ; a [nvi r on rnent a 1 Qu al ity Act req ui re s that al l en v1 ron ment al impact re ports includ e a c om p a r a t i ve e val uation of the IINo-Project" al ter nat i ve . As d ef i n e d for thi s proj ect , the no pro j e ct a lte r n a t i v e as sume s t h e c ity 's Gene ra l Plan for the study area re mai ns unchanged and the pro pose d D e vel o p m e n t Plan and Text are not adopted . Th is a ltern at ; ve assumes that de ve lopment of the site as pro p os e d by the Devel opment P l an and Te xt is n o t rea lized in the f u t ure . In th i s ins tance, the site cou 1 d o n ly be d e v e loped based on the c ur re n t 1 and use des i gnat ions of the Genera l P l a n . Esti mates b a s ed on the cu rrent des igna ti o n s resu lt in -pro jecti ons of 260 dwel ling un its and a p o pu l a ti on of 860 at bu lld o u L No industri al land uses are i n c l ude d in t h is al ternati v e. The site w o uld ei ther re m a i n in its c u rre n tly largely undeveloped s t a t e or be de vel oped under the s t ated General Pl an rural res iden ti al d e s i gn a t i o n s . As the pro f i t a b i 1 1 ty of the e x i s t i n g mi ning operati ons decl ines , addi tion a l develop ment wou ld likely occ ur under the cu rrent Rural Res idential A and Rural Resi dent ial C z o n i n g categori e s. The cont inuati on of exi st ing aggregate re source ope rat ions on th e si te m ay soon be cu r tai led. wh e ther the rem ai nder of the proj e ct site re mains undevel oped or not . Simil arly . as su rroundi ng re si dent ial corrmuni ties de ve lop, gra zing op era t i o n s on t he site wi ll become less fe as i b le. Increased pre ssure from s u r ro u n d i ng areas for ci rcu lation improvements or a r t e r i al s th rough the area may o c cu r even if the a rea is not dev e l o p ed . Th is al ternat ; ve avoi ds the ma g ni tude of imp act s associ ated wi th the pro posed d e v e l o p men t as d e scri b ed in th is ElR . incl udi ng gra di n g. maj or drain age modi f1 cations J art e ri al i"llrovements . l o s s of open space, increased traffi c, ai r and noi se po ll ution, loss of r ura l character and increased d emand s of p u b l i c servi c es and uti lities. Mi ni ma l road con struction wou ld o c c u r on the p roj e c t site in the "No-Pro ject14 a lte r n a t i v e . The di s a dvan tages of t h is al te rnati ve are p r i m arily econ omi c. In ad di ti on to the lack of economi c return on the land for t h e proj ect proponen ts , and the loss of e mp l oy m e n t opportuni ties for t h e ci ty and re gion, is the lost o p p o r t uni - 5-1 ties for po t ent ial tax r e ven u e s to the ci ty of Poway and other taxi ng agenc ies. Si nce no industri al uses are i n c l u d ed in thi s al ternati ve, the land use obj ect ives f or a vari ety of land uses wo uld not be rea liz ed . The no proj ect al ternati ve i s cont rary to the pro ponent 1s desi re to secure a vi ab 1 e use o f the pro perty and create a co hes ; ve mi xed -u se cO lTlT1un1ty I to create a s t r o n g base of emp l oym ent -gen erat ing land uses . and to assi st in the com pl etion of re gional arteri al l1 nkages . The pri mary rea sons for rej ecting this alte r nati ve are the eco n om ic di sadvantages , the fa il ure to effectuate the c u r r e n t p l anned co rrrnuni t y zo ni ng and land use ob ject ives of the General Pl an, and the i m p r o b ab i l i ty of m ai n ta i ning the area in a semi rura1 state wi th the a pp r o ve d and p l a n n e d dev el opment in the immedi ate sur rounding are as . Th e no project a H e rnat 1 ve cou 1 d be con s; dered an tl en vi ron me nta 11 y super ior al ternati ve" in t h a t fe we r traffi c. air pol l utants , noi se a n d pu bl ic service dema nd s than the proposed proj ect wou ld be gene rated . 5.2 DEVELOPMENT OF THE SITE FOR ALTERNAT IVE LAND USES Al te rnat ive 1 -Low Intensity Under th ls al ternati v e, developme nt of th e proj ect site wo uld b e limited to the uses a n d dens ities shown in Ta ble 2 of Sect ion 3.5 of t hi s EIR. Th e si te wou ld be d e v e l o p e d wi th approx imately 260 dwe1 1ing un its . No industrial or comme rci al land uses are propo sed (Exhibi t 36 ). Th is altern a ti v e wo ul d res ult in less i nt e n s ive devel o pment th an the pro po sed proj ect and wou ld be accompan ied by red uced cumul a ti ve demands on reg i onal water suppl ies, energy re s ources , loca l pu bl ic se r v ice s and uti li ties , less l a n d f o rm alterat ion and red u c ed traffi c gen e rat i on . Ac company ing the red u c t i o n in traf fi c ge n e r at i o n wo uld be fe we r mobi le so urce ai r p o l l ut ants and 1 ess v e h i cu 1 a r no; se . The numb e r of dWe 11 ; ng uni ts in the n o p r oj e c t an d low i n t e ns ity a1 t e r nat i ves are si mi l ar . H o we ver � an e a s t west arteri al wo u ld be de v eloped in the low intensity al t e r n a t i v e ; wh ich acc oun t s fo r the maj or increase in en vi ron ment al i mp a cts . 5-2 The di s a dvan tages associ ated wi th thi s al te rnat i 'Ie i n cl ude red uced em pl oy ment opportuni ties. g r ea t er di ffi cu lt ies in providing on-and offs ite pu bl ic faci lities and serv i ces . Co ns idera bl e infrastructure imp rovement s wou ld sti ll be requi red to ac commod ate new devel opme nt , incl udi ng water supply/wast ewat er di sposal sy stems , and arteri al ac cess ro a ds . Essen tial ly fi x ed infrastructure imp rovement costs wou ld have to b e a mo r tize d over a sma l ler devel opment base . Simi larl y, the de vel o pment of fewer un its wi t h i n the study area wou 1 d ge ne rate 1 ess tax reveneus for the city a nd other ta xing a gen c i e s . Th e co st s of provi di ng p o lice and fi re servi ces to the area wo u ld be pai d for through less tax r e ven ue s . Th is al te rna ti ve is not rej ect ed due to the di f fi cul ties as soci ated wi th fi nanci ng service and inf ras tru cture costs , the lower ex pect ed econom ic ret urn . the fai lure to fu l f i l l some obj ect i ves of the genera l pl an or the impacts due to construction of the east -we st arteri al . The ant i c ipa ted env; ronmerltal impact s of the low i n t e nsity al ternati ve are such that the al ternati ve is r etai n e d for cons iderat ion . CEOA requi res a rem a ini n g al ternat ive be de Si gnated en vi ro nmental ly s u peri o r if the no proj ect alter nati ve ;s c o n s i d e red en v·i ronme nt al ly superi or; Al tern ati ve (1) is con si dered en vi ronmental ly s u per i o r of the re m a i n i ng al ternati ves . Al ternat ive 3 -Hi gh Inten sity Und er th is al ternati v e, the proj ect si te wo u ld be de vel oped at the up pe r ra nges of the propo sed res i d ential densities. Implement ation of thi s al tern ati ve wou ld res ult in the co nstruction of app rox imat ely 740 dwe l l ing units at b u ildo u t , 35 mo re ac res of industri al land uses a n d ni ne ad di tion al acres of cOlOO1ercial /offi ce uses than the proposed project . The nu JTi)er of emp l oy ees wou ld increase by approximatel y 960 (Ex hi b it 37 ). Th e advanta ges of th is al ter n a t i v e wo uld be the improved abi lity to pay for devel opment serv ices , the inc rea sed ec onomi c re turn and the increased tax reven ues . Th e co sts fo r d e v e l opment of infras tructure wou ld be am or ti zed over a larger de vel opme nt base . Increased emp l oy ment opportunities, devel opmen t of the e a s t -w est arteri al and impl ementat ion of many of th e land use obj ecti ves of the Ge neral Pl an wou ld be accomp lished . 5-3 Tne dis advantages .o f th is al ternati ve re l ate to the overal l intensi fica� tion of devel opmen t. Imp a cts iden ti f ied throu ghout this EIR w o u l d gene ral ly be in creased. Th; sis es peci al ly true for urban sy stem impacts su ch as traffi c generat ion, ai r and no ise po ll ut ion, demands for pu bl ic servi ces and uti lities , loss of open sp ace, landform altera tion , lo ss of ru ral ch ar� dcte r and aesthet ic impacts . In addi tion, increased resi denti al deve lop ment (400 mo re units t han the proposed proj ect ) would fu rt her co ntri bute to the ; mba 1 ance of emp loyment and popu 1 at ion 1 n the reg i on . The i nt ens i fica tion o f scale wou ld re su lt in the need fo r large r pu bl 1c faci lities and arterial s i n the area. The increase in the en vi ronment al impacts at tri butabl e to Al t ernative (3) rel at i ve to the proposed proj ect re su lt in its rej ec ti o n. The pri mary reasons fo r reject ion of the al tern a ti ve are re l ated to increased traffi c impac ts, the scale Of res ident; al de v elopment in propo rtion to the area l regional deman d, the increa sed modifi cation of landforms , the increased lo ss of open sp ace and the increased loss o f rural ch aracte r. The magni tude of these impacts needs ad di ti o nal ev aluation at later st ages of pl an ning. Al ternati ve (3) -High Intens ity, be cause of the increased impacts due to the intens ificat ion of the land uses is rej ected as a vi abl e al ternati ve due to its pot ent ial en vi ronment al impacts . 5-4 6.0 RELATI OOHIP BETWEEN SHalT -TE� USES (F THE ENVIR(JttENT AND THE MA INTENANCE AND ENHANCEMENT IF LCWG-TERM PROOUCTI VITY The p r imary effect of this proj ect is cOlT1llitment of r ura l and vacant 1 and to more int e n sive ru ral res ident ial and industri al/c omn erci al land uses . D eve l o p me nt of a planned c omm un i ty wh ich cons ists of re si denti al , cOl111!er ci a l , lig ht industrial, and open space uses wi ll i n c r ease the producti v ity of t h e area in terms of ef fi ci e nt u s e of the 1 and and econom i c retu rns • On the ot her hand. de vel opment o f th is proj ect wi ll cont ri bute incremen tally to p e r m a n ent re gi onal and local losses of open space , pasture. and mi nera l res ources . These loss es may have unforeseen lon g-term conse quences . Deve l opment an d use of the property as a p l a n ned comm unity whi ch is a re si dential /emp loy ment center is a n t i c i p a ted to span a b ou t 50 to 75 years. Th is is co n side red a r el at i v e ly short-te rm use of ma n 's en vi ronment . how ever. devel opment is consi dered a perm a nent corrm i tment of l a n d and mi neral re s o u r c e s to urbani zation s inc e it is hi gh ly u n l ikel y that t h e land wou ld reve rt to open space in the fu ture . It is assumed th at the c omp on e n t s of t he pl anned commun ity wi ll be gradu al ly re p laced , as they become o bsol e te , by more p ro d u c ti ve land u s es as rede ve lopme nt re sponds to fu tu re needs . A d van tages of near-term devel opme nt include p r ovi s i o n of emp loyment op por tun iti es in proximity to hOUS ing and an increased revenue base fo r the ci ty of Poway and the c o unty of San Di ego. It is di ffi cul t to dete rmi ne the advanta ges of postpon ing de vel opment of the p r o perty si nce long -ter m d e ve l o p m en t alternati v es are vi rt ual ly unp red ictabl e. Futu re de ve l o pment impacts to the phys ical en vi ronment are lik ely to be very simi lar t o those of the prop osed project . Incl uded are impacts to hy d ro l 09Y J 1 a n d fo r m . bioti c comm unities, open sp ace , e t c . Due to increaSing scarci ty of land and the subsequent increase in val ue of l a n d , t h e c u r re n t l y p ropos e d leve l of o pen space d e d i c a t ion may be pre cl u d ed in the futu re . 6-1 7.0 IRREVERS IBLE AND IRRETR IEVAB LE COMMITMENT OF ENERGY SUPPLIES AND aTHER RES CbCES SHOOlD THE PRGlEtT BE IMPLEMENTED App ro val of the proposed Master Plan for the South Poway Planned COlTll1uni ty and associ ated a c t ion s wO l a llo w de\lel opment of an app r oxi mate ly 2,500-acre sHe compri sed of ru ral and vaca nt 1 and. The life o f the faci l iti es and st ructu res of the project wi ll span an e s t i m a ted 50-7 5 y e a r s , whi ch is a short-term c ommi tme n t of land and mi neral resou rces to a p lan ned communi ty con s i s t ing of re s i d e n c e s . bu sinesses, and indu s t ry . Irret ri evable and l o n g -t erm corrmi tment of e n ergy supplies, structu ral mat eri als, ae sthet ic re sou rces , and natu ral resou rces result from al l deve l opment . Lon g-t erm corrmi t m en ts of resou rces whi ch may di rect ly or indi rec tly re sult from proj ect implement a ti on are summa ri z e d bel o w. A. COolMITMENT OF LANO De ve lopmen t of t h e prop osed proj ect on the site w i n co n strai n fu tu re opti ons for devel opment , p arti cu lar l y in the intensely devel oped cent ral p ort ion of the site. In addi tion, bey ond the 50-75-ye ar li fespan of th e proj ect it 1s u nli k e l y that these structu res wou ld be d emo l i s h ed and the l a n d use revers ed to low intens ity. Urban d eve l o pment wl ll irre vers ibly level the site 's c e n t r al highl ands and al ter the topog rap hy of a r e as proposed for ru ral re si denti al de ve l opment . B. MI NERAL RES OUR CES Indu strial, comme rci a', and res i dent ial devel opme nt bu ilt ove r mi neral res ou rces p r ecl udes ext racti o n. Si nce it is u n l ike ly that re mov al of faci liti es and structu res wi ll be economi cal ly vi able in t h e fu ture, impl ementati on of the prop osed project wo uld irreversi bly cOJ1JT1 it e xi s t ing aggregate re sources to de vel opment . 7-1 C. SCENIC RES OURCES The proposed project re pres ents a per m anent loss of open space wh ich ad ds increm ental ly to re gi onal losses of vacant 1 a nd . Althou gh a po rt ion of the site wi ll be re tai ned as open space, vi ews wi ll be irreversi bly al tered from prima rily pasture to homes ites and corrme r ci a l/i nd ustr1 al land uses . The sitels ch aracter wi ll be transfONJ1ed from ru r a l and unde vel oped to deve loped . o. ENERGY RES OURCES Transformation of open sp ace t o othe r land use re presents a cOl1lT1i tment of vari ous energy resources . Deve lopment wi 11 increase consumpt i on of energy resources at the si te . Since fossi l fu el s are cu rrent ly the most exten si vely uti lized energy sou rces . it is logi cal th at the proj ect wi ll contin Ual ly and incremental ly re duce the non -renewab le supply of natu ral gas and pet r ol eum produ cts s uch as oi l and gasol ine. These" re sources wi ll be requi red for en gi nes used i n proj ect co nstruction, en gi nes used fo r trans portation of peo ple and goods . and al so for heating /coo ling at bu i l d ing s . Th e project wi 11 u1t imat ely co nsume an es ti mated 62 .3 megawatt -hou rs of el ect ri ci ty and 400 .7 mi llion cu bi c feet of natu ra l gas annual ly. wh ich is a long-term, irret ri evabl e commi tme nt of ene rgy re sou rces . E. OTHER NATURAL RES OUR CES Impl eme nt ati on of the proposed proj ect wou ld irret ri evably commi t or depl ete other non -renewable or sl owly renewable res ou rces . These incl ude, but are not limited to : fo re st pro ducts , sand and gravel . pet rol eum pro duct s. metal s such as iron, coppe r, and lead , soi ls sui table tor agric ul ture or pasture, and water. 7 -2 8.0 GROWTH-I NDUCEME NT AND CUMULATIVE IMPACTS 8.1 Gra.th-Induc1 ng I�acts Ul timat ely the proposed p roj e ct wi ll a cc omm od at e a tota l popu lation of a pp rox i ma t e ly 816 . The proj ect wi ll add 272 dw e l l ing un its to the city's h o u s i n g stoc k and app rox imat ely 13 ,200 emp l oyees at bui ldout . The San Di ego Associ ati on of G o ve r n me n t s (SANOAG ) S eri e s 6 growth f o re c a s t s fo r Ma jor St a tisti cal A re a 1 (MSA 1) -North C1 ty p r o j ect substant ial emp l oy me nt growt h for t h e area in t h e next twe nty ye ars (see Section 4.7, Tab le 7). The Series 6 F o r e c a s t incl udes es ti mates of 260 dwe l ling un its and a p o p u l a t i on of 863 for th e proj ect area ba sed on the current l a n d use desi g nat ions of the Gene ra l P lan. The p r oj e c t 's impacts o n re s ident ial gr owt h are re latively mi nimal ; approximately 92 ,000 a d d iti onal dwe l ling uni ts a r e forecast in MSA 1 betwee n 1980-2000 . Over 22 ,000 a dd iti o n a l ac res may be d e voted to r e s iden t i al use in MSA 1 in the next twe nty ye ars. Therefore., devel opment of the proposed proj ect woul d re su lt in mi ni mal increases in the dw e lli n g un it and p o pula ti o n increa ses (le ss than one (1) p e r cent ) anti cipated for MSA 1 from 1980 to 2000 . Withi n the pro p o s ed proj ect irmJedi ate area , deve lop ment is gen e r a l l y establi shed or commi tted by app roved pl a ns . Are a s wi th a p p r o v e d pl ans are the Scri pps Mi ramar Ranch, Sabre Spri ngs , M i ram ar Ranch North . and Rancho A r b o lit os (Ex hi bi t 2). O n l y Ra ncho Arb o1 1tos 1S l o c a t e d wi thi n the c i ty of Poway; other m a j o r proj ect s me nt ioned are located in the city of San Di ego . B e c a u s e su rro un di ng land u s e s are cOlllTlitted and wi ll ge neral ly prec ede the prop osed proj ect phas ing. the p r o j e ct does not resu lt in substa nti al di rect resi dential growth induc em ent . The correspon di ng dwe l ling uni ts , c onwn erc i a l a n d ind u s tr i a l a cre s pro p o sed for each proj ec t are li sted in Ta ble 35 in Se c t i o n 8.2. No 5 i gn ifi cant growth-i n d u ce m e nt effects are ant i ci p at ed in the u n de v e l oped areas s o u t h of the proj ect . Th ese a r ea s, desi gn ated Fu ture Urban izing Areas by the ci ty of San D i e g o , wi ll not i nc l ude any proj ect -rel ated infrast ruct ure extens ions . No new ro adw a y s are p ro p o s e d by th e proj ect through these lands . The 2,000 ac r es owned by General Dy nami cs ;s cu rrent 1y zoned M-2 a n d a general pl an a m en dmen t is req ui red fo r any zone change proposal . 8-1 The c i ty of Poway re tains the abi lity to cont rol growt h on land s go ve rned by the Ge neral Plan. The inmed1 ate areas no rth of the prop osed proj ect are e i t h e r devel oped. in app roved pl ans or wi t hin the c i ty of Poway. N o si gni fi cant growth indu cement is anti cipated in th is d ire c t ion due to the project . The proposed extens ion of the South Poway Arte rial may poten tially induce new growth within the uni ncor pora ted uisland u southwest of the proj ect site. Howe ve r. thi s "i sland " is pr op osed to be anne xed by the ci ty of San Di ego in conjunct ion with the Scripps Mi ramar Ranch de ve l opme nt . D eve l o p ment of the "isl and ll is proba bly i ne v i t a b l e and is i ndu ced by the su rro u nd ing land use plans indepe nde nt ly of the ext ensi on of the South Poway Art eri al . Oeve 1 opme nt of the proposed project wi 11 re q ui re provi s; an of wa t e r and wa stewat er service to an area not previ ous ly servi ced. Ho wever, proposed wa ter and w a st e w a t e r 1 i nes wi 11 be si zed to acc olTlTlod ate proj ect demands wi thout s; gn ifi cant addi ti o na l capaci ti es . Ul ti matel y. addi ti onal sewe r line capaci ty to se rve the proj ect may be re qu i red wlth a para llel li n e to the ex isting Poway Trunk . If needed . this line would traverse exi s ting and cO/1lT1i tted de ve l opment al ong P ow a y Road (eg •• Sabre Springs ) and wou ld not induce si gn ifi ca nt new g r owt h or intensi fi c at ion. The Seri es 6 Foreca st does not incl ude es ti mates of emp l oyme nt re su lting from industrial or conmerci al deve lopme nt w ith i n the proj ect site. There fo r e , the a d d i ti o n of 13,200 emp l oyees to MSA 1 resulti ng from project de ve lopment is a pot ent ial indi cation of a si gni fi cant en vi ron men tal ef f e c t. Whi le the con vers i on of l and to emp l oyme nt uses is a phys ical ch ange wh ich resu lts in economi c changes , the phys ical chan ges , in th is case, are not i ndi c a t ive of a si gni fi cant en vi ron ment al effect in th e i r loca l and re gion al context . The proj ect site is si tuated in a predomi nantly u rb a n reg ion. cha racteri zed by di s persed res i d e n t i a l and empl oyme nt ce n t e r s . Empl oy ment -popu lation ba l ance in a sm al l geographi cal area may be desi rabl e from a n envi ronmental analysis or urban pl anni ng pers pecti ve. bu t du e to the hi stori cal d e v el op m e n t of t he re gion. is mo re likely a c h i e v ed at the regi on al level . Concl usi o ns of si gni fi cant proj ect -i nduced growt h resu lt ing from land con version to emp l oy ment uses is not ev i dent from an analy sis of the inmedi ate project area . Further ana lysis of growth indu cement ;s incl uded in the fo l lowing secti on on cumu lat ive eff ects . 8-2 8.2 Cu.u lati Ye I�cts F orecas t s for MSA 1 i nd ; cate s 1 g n i f i cant growth fo r 1980 t o 2000 . How e v e r . the reg ion m ay ex pe ri ence ba l anced growth; the pe rcenta ge ch ange in popu lat f on 1 s app rox 1 mate 1 y eq ua 1 to the p e r c e n t age chan ge 1 n c1 vi lhn empl oym ent . As d i s c u s s ed prev i ously in sect 10n 4.7 SO CIOECONOM ICS. the ci ty of Poway has ex peri e n ced lower rat es of growth than the ra t e s fo r MSA 1 or the San Di ego reg ion . Wi thi n the con text of proj ected re gional devel opment , vari ous p ro p ose d proj ect 1 m pac t s associ ated wHh res ide nt ial devel opment may be vi ewed as proportionatel y mi nor f r om a cumu lati ve perspect ive. Ali st o f the maj or proj ec ts approved s u r r o u n d ; ng the pro p o s ed South Po way Pl an ned COtTII1un ity ; s d e t a i1 ed in Tabl e 35 . Al l of the proj ects , ex c ep t Rancho Arbol Hos are 1ncl uded in ad o pt e d conm uni ty p l a n s for the ci ty of San Diego.1 T.he Adj usted Series 6 Fo re casts (re v i s e d bas ed on the 1980 Census) 1 n c l ude these p roj e c t s . As ment ioned prev ; ously, Ra ncho A r b a lit o s is l o cat e d wi thi n the ci ty of Poway . Th e app roved proj ects l i sted in Tab 1 e 35 h a v e an e s t ;mated t ot a l popu l a t i on of 63 ,200 and wi 11 add 22 .87 5 d we l lin g uni ts in the re gion a t bui ldout. Approxi matel y 2,2 00 occ upi ed dwel ling u n its were wi thi n S c r i p p s Mi ra mar R a n c h in 1980 . Table 35 CUMULATIVE MAJ OR PROJ ECT STATISTICS P r oj e c t A�2r o v e d Mi ra mar Ranch Nort h 3,900 Sabre Spri ngs 5,100 Scri p p s Mi rama r Ranch 6,000 "C o unty Isl arrdll Amend . R a n c h o A r b o l Hos 975 Ca nnel Mountai n Ranch 51600 TOTAL 21 ,575 OUs Add iti on al Commerci al/ Indust r1 al / P ro�o 5 e d DUs Offi ce Ac r e s Bus1 nes s Park A c res (1,8 00) 18 145 ( 200) (1,500 ) (3 ,500) 35 53 o 186 292 63 290 o 170 668 1 Correspondence from Keith R o g e r s , Sen; or Pl anner . Pl anni ng Department , city of San Diego , Oct ober 18 , 1 984 . 8-3 The c i t i e s are expected to ha ve su ffi ci ent suppl ies to meet nea r-t e r m growth demands . Howeve r, in light of t h e fu ture curtai lment of Col orado Ri v er water , the proposed p r oj e c t wi ll contri bute to growing re gi on a l dependence on increas i ngly scarce imported w ater supplies. Wa s tew ater treatment pl ans fo r th e proj ect site wou ld c ont r i but e to cu mul a t i v e demands on capacity at the Metro Treatment Plan. The proposed proj ect wi ll cont ri bute incrementa lly to demands on c1 tyw1 de servi ces incl uding pol ice and fi re services . Whi le addi ti onal p e rs onnel a n d e q ui pme nt a r e requi r e d bec ause of the p r o j e ct 's impa ct, no new faci li ti es are r e qui red at th is time. Areawi de devel opment wi ll al so ge nerate su bstantial ene rgy demands . To dat e, Sa n Diego Gas and El ectric Company has demonst rated ahi lity to meet the energy demands associ ated with urban g r o w t h . Ene rgy re souces wi 11 co nti nue to be eva l ua ted wi th each inc remental phase of deve lopme nt to ensure cont i nued adequate elect ri city and na tu ral ga s su pply . Of parti c ul ar re levance to city and a re a wide plann ing efforts are the cumu lati ve effects of i n c r e a sed traffi c g r owth. Of parti cul ar co ncern are the cumul ati ve impacts o n Poway Road and Interstate 15. A prel iminary traff ic analysi s by Federhart and Ass oci ates re commended tri p at tract ing uses be located in the proj ect area to help ba lance the peak hO ur fl ows in and out of Poway whi ch now occu r dai ly . The study al so reconmended a major ea s t/ west road through the proj ect to re lieve traffi c on Poway Road . In 1980 , approximate ly 17,400 emp l oy ees li ved in Sub reg ional Are a 15 (Poway ) and only 9,200 wo rked in the subre gion. MSA 1 h a s a better emp l oyme nt bal ance , with 227 ,200 e mp loyees a nd 202 ,000 res i dent wo rkers .l Rel ated to increased vehi cu lar travel . continu ed areaw ide d e v e l o p men t wi ll create inc r e a s e s in auto ai r pol l utant em i ssi ons . Approva l of the pro posed p r o j e c t wi ll have a cUlI1Jlati vely adVerse impa ct on re g ion a l ai r qua - 1 Te lephone con versation with Bi ll McFarl and , SAN DAG . No vember 14, 1984 . 8-5 lity, ab se nt a re vi sion to the Re gi onal Ai r Qu a lity St rategy. Add iti onal ve hicul ar travel wo uld al so increase noi se level s th ro ughout the subregion al area , pr imari ly al ong fu ture art eri al and col l ect or ro adways . Col lecti vely, the mul ti pl e projects fn the So uth Poway area wi ll potent1 al ly resul t in si gni ficant effects on regi onal ai r qual �ty. bi ol ogi cal habi tat av ail a bi l ity, traffi c, publ ic servi ces , water supply and a number of ot her area s of co ncern (eg., cu ltural resou rces ). Indi vidual ly. the sur roundi ng proj ects may have si g n ificant effects and have been subj ect to envi ronm ental rev iew. Th e cumul ati ve , net effect of these and ot her pro jects cannot be comp letely add re ssed in any one EI�, short of a major review of the ci t y1s Comprehensi ve Pl an . The cumul ati ve growt h of the ent ; re city is a subj ect ap propri ate ly a d d ress ed by t h e city of Poway in its di sc re ti onary re vi ew of indi vi dual project s and by SA NDAG through the forecast and po l icy pl ann i ng proce ss. 8-6 9.0 UNAVOI DABLE ADVERSE IMPACTS The fo llowi ng ;s a summary of the unavoi dabl e adverse 1mpacts wh ich are e xpected to occur upon implement at ion of the proposed project . Landfo� and Topography Perma nent large-s cal e l a n d fo r m mod ifi cat i ons wi ll be as soci ated with grading fo r industri al land uses . Further mo di f ications wi ll be ass oci ated wi th gradi ng fo r ro adw ays an d homes 1tes . Geo logy, Soi ls and Mi neral Resources Soi ls wi ll be exposed to eros ion by wi nd and water du ri n g the short term gradi ng and const r uction peri od . Hy d ro logy and Water Qual ity Sed iment at i on potent ; al wi 11 increase duri ng the short-term gradi ng and construction ph ases . Cumul at i'le increas e in r u n o f f and long-t erm urban runoff pol l ut ant d1 scharges wi ll occur to downstream areas . Exi st ing natu ra l drai nage channel s withi n proposed de ve l opment are as wi ll be elimi nated . B1 D1 Dgical Resou rces Ha bi tat and wi ldlife res ource s w1 1l be re moved or d1 spl ace d from devel opment areas. Sens itive speci es such as coast ba rrel cactus wi ll be remo ved in devel opme nt areas. land Use The project wi ll commi t ex ist ing open sp ace and potent ial pasture land to industri al , commercial , and re s idential uses . 9-1 Transportation Up to an e s t i m a t ed 73 ,158 ve hi cl e t r i p s pe r day wi ll be ge nerated . Ai r Qual ity Short-term ai r qual ity i m p act s w1 11 occu r, a s s o c i ated wi th gradi ng an d const ru ction phases (eg., du st, eq u i p ment emi ss ion s). Long-term ai r Qual ity i mpa c t s wil l occur from mobi le and s t a t ion ary em ission sou rces . Acousti c Envi ronme nt No ise level s wi ll inc re ase on site and offsite, most notably as a r e sul t of i n c r e a s e d traffi c vo lumes . Du ri n g gra�ing and co nstruction, short-term noi se leve ls wi ll increase on sHe. Pu bl ic Serv i ces and Uti lit ies Oema nd for s e r v i c es and faci lities wi 11 i n c r e a se . incl u ding fi re an d police prot ection, uti lities. school s, and sol id waste d i s po sal ; waste water tran smi ssion faci lities and cu rrent ly limited treatment capaci ty w i l l incre a se ; consumpt ion of scarce reg i o n al water and energy s up p l i e s wi ll increase . Aes thetics From hi gher e l e v a t i o n s in p o rt i o n s of th e ci ty of Poway, vi ews of the natu ral landforms in the cent ral hi ghl a n d s wi ll b e al te red perma nently due to g ra d i n g and industri al development . Regional devel opme nt including the proposed proj ect wi ll cont inue to affect the ni ght sky ad versely in re lati on to ac ti vi ties at observa tori es . 9-2 10.0 OR GANIZATIONS AND PERSONS CONTACTED A. Partici pants The PBR pe r s o n n e l wh o pa rtici pated in the prepa ration of thi s EIR incl ude : Pri nc ipal -i n-Cha rge P r o jec t Ma na g er Envi ronmenta l Resea rch and Anal ys is Graph ics Word Proc ess ing/Copy Ed iti ng B. Consul tant s Kunzman and Assoc iates Sc ient ific R e s o u r c e Surveys . Inc . Ph i llip R. Schwa rt ze Th omas F. Hol m. Alep Sidn ey Lindma rk . AICP Mel inda Vest W. Wa l ton Wri ght Jayna Moore M a rs h a Woad Barbara Hea th Bi 11 Kunzman John Kai n Nancy A. Wh itney -Des autel s c. Other Organ izat i ons and Pe rs ons Consu l ted PRe Engi n ee ring San Di ego Associ ation of Gove rnme nts Rikki Al berson Tom Larkin Bi ll McFarl and Ki m Pugh Jeff Tayma n Si ll TUomi San Di e g o R e g ion a l Wa te r Qual ity Control Board So uth Coast Ai r Qual ity Ma nagement Di st ri ct Ci ty of Poway Pl an ning Servi ce s Saf ety Serv i ces Co mm u n i t y Se r vice s 10-1 Greg Peters Bri an Ferri s John Bri dges Wi 11 ; am Toon Lee Lew; s P o way Un ified Sc hool Di stri ct Mi r a ma r La nd fi 1 1 City of San Di e go Pl anni ng Ci ty of Santee Pl an ni ng and Comm un ity De v el opment County of San Di ego P lan n ing li brary Pub 1 i c Wo r k s Pal oma r Ob s erv a t o ry Pome rad o Ho spital PacHi c Bel l Sa n Di ego Gas and E lect r i c GEOeON, Inc. Co x Cabl e Sa n Di ego Buehler Property Owners As soci ati on Santa Isabel Indi an Reserv ati on Ri ncon Indi an �ese rv at;on 10-2 Stephan ie Au s ti n Dave Gr ossma n Keith Ro gers Di ana Dugan M1 ke St ang 6eorge Urman Doug Wi lli fo r d Ron May Ernstl ee He n sha w R.J. Ma ssman Robert Bruc ato Shi rl ey Watt s Ri ck Hi ll John Daws ey Don na Mc Gui re Jay Sheppard Mi Ice Ch ap; n Bruce W. Wi nt e r Nevi lle l:3othwel l Erwi n Os una An to inett e La Chappa 11.0 RE FERENCES Cal i forn ia Ai r Resou rces B o ard , Ca l iforni a Ai r Qu a lity Data V o l ume s XIII-XV, 1981-1983 . C i ty of P oway , Comprehens ive Pl a n, Septembe r 1983 . Comp rehensive Planni ng Organi zation of the San Di ego Reg ian. Areawi de Wa ter Qu al ity Manage ment P lan , San Di ego -R:1 vers ide Des i gnated Area Su nuna ry , 1978 . Compre hen si ve Pl anning Organ1 zation of the San Diego Reg ion, Wate r in the San Di ego Regi on , 1980. County of San Di ego, En vi ron me nt al Development Ag ency, Natural Resou rce Inven tory of San Di ego County, S e ct i on 6, Hy dr�, 1971 Envi ronment al D a t a Resea rch , Envi ronmental Impa ct Analysi s, S c r i pps Ranch Un i t s Nos . 8, 9, and 10. San Diego , May 1973. Fannon . Wi ll iam W •• Water and Sewerage Faci lities fo r Buehler Pl anning Area , Po�ay, Ca lifo rnia . Oc tober 1984 . Fede ra l Emer gency Mana gement Agency, Fl ood Ins urance Study -C i ty of Poway , 1983. federhart and Associ ates , Buehler Pl anning Area Tra ffi c Overvi ew . January 1983 . Gi ll espi e-Delorenzo, A .S .L .A & A sso c i a tes . Ca rme l Mou nta in Ranch C o mm u nity Pl an . May 1984 . Kunzman Associ ates . South Po�ay Pl anned Communi ty Tra ffi c Study. January 1985. Laswel l, Na ncy K . Dra ft Supp l eme nt al Envi ronmenta l Impa ct Report, Rancho Arbol itos Phase II . De cembe r 1980. L asw e l l . N ancy K. Dr aft Suppl emental Envi ronme ntal I mpa c t Report , Ran cho Arbolitos Pha se Ill, Au gust 1981 . Phel ps Company. I n c . and Van Del l and A ss o c i a tes , Inc., Ci ty of Poway Ho us ing Needs Assessment Report . De cembe r 1982 . Phi ll ips Brandt Red di c k, Bi ol ogi ca l S u rvey . Sept ember 1984 . Phi ll ips Brandt Red dick, Cloverdal e Final Envi ronmenta l Impact Repo rt , Vo l ume 1, June 1984 . PRe Engi neeri ng. Inc., An alysis of Aggregate Resources -Bue hler Pl an ni ng Area , Au gust 1984 . PRC En gi nee ri ng. Inc., Hy drol ogi cal Ana lys es -Bueh ler Pl anni ng Area . August 1984. P RC E n g ine e ri ng . Inc •• Vi sual Ana lysi s -Buehl er Pl anni ng Area , Au gust 1984. PRC Engi nee ri ng, Inc •• Opportun ities and Constraints Report -Buehl er Planning Area . Ma rch 1983. PRC En gineering, Appe n d i c e s - Constrai nts PRC Eng ineeri ng, Inc., Po l ice and Fire Servi ces -Bueh ler Plann ing Area, August 1984 . Proj ect Des ign Consul tants . Sabre S pri ngs Commu n i ty Plan , J a n u ary 1982 . Rick Engi nee ri ng Comp any , Mi rama r Ranch No rth Community Pl an , January 1980 . San Diego Ai r Pol l ut ion C o n t r o l Oi strict , 1982 State Ifl l e me n t a tio n Pl an Re vi sion for t h e San Di ego Ai r Basi n, Va l s. rand • No v embe r 1982. San Diego Ai r Po l lution Control Di stri ct and Comp r eh ensive Pl anning Organ- ; zat i on of the San Di ego Reg i on . Revi sed Ai r Qu al fty St rategy, Sept em ber 1978. San Diego Associ at ion of G o v e rn me nt s , Se ri es VI Growt h Forecasts , 1983 . Sc ien tific R esou rce Su rveys . Inc •• C u l t u r a l R e sourc e s S u r v ey of the South Poway Project, No vember 1984 . Smith , Bri an F. Archaeologi cal S t u dy for Buehl er Pl anning Area , Nove mber 1982 . Un ited States D e p a rt me n t of Ag ri cul tu re. Soi l Conservation Ser vice. Soi l Survey of the San Di ego Area. Ca liforni a, De cember 197 3 . Wright . �. Wa lton . PBR B i o l o g i c a l Servi ces D i v i S i o n , Biological Su rvey R ep ort , Septembe r 1984 . 12 .0 RESPONSE TO COMMENTS RECE IVED DUR ING PUBL IC REV IEW I nt .-oduct 1 on A wri tten res pon se has bee n pre pa red for ea ch conment recei ved duri ng the re view peri od for the So ut h Poway Plan ned Conmun fty Devel opment Pl an Draft EI R� as requi red by Sect ion 15088 of the CE QA Gui del ines . Thi s Res ponse to Conrne nts con tains a list of the agenci es and organi zati on s wh ich com mented on the dr aft EIR , a copy of the ori ginal letters from tho se who com me nted , and responses to each speci fic comment wi th in the corres po nde nce . Li st of Ca..entfng Agenci es and 0�an1 zat 1 0n5 LETTER NO . DATE RECE IVED FROM 1 5-8-85 San Di ego Co unty Archaeol o gical Soci ety , Inc. 2 5-1ti-85 Poway Uni fi ed School Di strict 3 5-21-85 City of San Di ego 4 5-24-8 5 San Di ego Cou nty Arc haeol o gical Soci ety � Inc . 5 5-28-85 Safi no , Butche r, & Ormande, Inc. 6 5-30-85 De pa rtment of Fish and Game 7 6-3-85 State Department of Conservat ion 8 5-30-85 State Offi ce of Pl anning and Research 9 6-10-85 Cal ifornia Ai r Reso urces Boa rd 12-1 CDfI€J(TS 12-2 3 THE CITY OF SA N DI EGO CITY ADMINISTRATION BUILDING . 202 C STR EET· SAN DIEqO, CALIF. 92101 ENVI RONMENTAL QUALITY DIVISION PLANN ING DEPARTM ENT 23&.6775 May 20 , 1985 Mr . B a rry K. Hagan C ity of Poway Pla n n i n g Services Depa rtment P.O. Box 789 Poway , Ca lifornia 92064 De ar Mr . Hagan : REC-'V'Z--t:I C:.J CiT Y OF PO\,VAY PLANN !NG QEFT. SUBJECT : SOUTH POWAY PLANNED COMMUNITY COMMERC IAL DRAFT EN VI RONMENTAL IMPACT REPORT The Pl anni ng a n d Engi n ee ring and Developme nt depa rtments of the C i ty of S a n Diego h a v e rev i ewed t h e draft EIR for the South Poway Pl anned Commun ity and have the fo l lowing comments . Traffi c Circu lation 1. T h e re are two proj ects p!'e��rl t'ly be ing proces sed in the City of San Di ego wh ich shou ld b� �na l y z e d in the EIR fo r cumu lative impacts . These p r o j e c t s are th� ame ndments to the M i r a m a r Ranch North C ommu n i ty Plan and the Scri pps Mi ramar R a n ch Commun ity Pl an Ame n dm e n t and A n ne x a t i o n . The tra ffi c forecast pe rfo rmed by SANDAG did not incl ude ei ther of these projects because they we re not known p ro j ec t s at the time SANOAG p e r f o rme d its fore cas t. 2. Community R oa d w ay Circ ul ati on . The t ra ffi c secti on of the draft EIR deals p r ima r i l y with a number of reg ional tran sportati on alternati ves . The analysis doe s nat focus on the issue of impacts to the e x ist i n g or p ropo s ed circu lation s y s t ems wi th in the a d j a c e n t communities of S c r ipp s ·Ranch and Mi ramar Ra nch North . The report should speci fi cally address t h o s e impa cts on Pomerado Road , sou thward to Inters tate 15 (�15), that wo ul d o cc u r if the South Poway A rte r i a ' is n o t extended we stwa rd to I-1S. Off-s ite impro veme nts neces sary to mitigate these i m p a c t s shou1d also be addressed . Other r oa d wa y s , such as Spr i n g Ca nyon Road , Cypress 12-5 3-1 3-2 \,.'-.. to ,_," ....... �. " • Page 2 Ca nyon Road , and Poway Road coul d also be i mp a c te d and shou l d, there fore. be anal yzed . 3. Reg ional C i rcul a t i o n . The EIR s h o u l d ana lyze the impact of th is project on the 1-15 i n t erc h a n g e s of P owa y Road , M e rcy Road , Camino del Norte, Mira Me sa B o u l e v a rd , and Pome rado Road . Of p a rt icu l a r con cern is the I-1S/Me rcy Road Interchange , wh ich if the South Poway Arter ial i s ex tended westwa rd , wou ld expe ri ence high traffi c vol ume s as soci ated wi th the ul tima te development of Mi rama r Ranch North , the p r o p o s e d Scri pps Mi rama r Ra n c h Commu nity Pl an Ame n dme n t area , an d the South Poway P l a n n e d COOITluni ty, as we ll as through-traffi c from Ro ute 125 . 4. Transporta tion Faci lit ies Phas ing Plan. In order to avoid e x c es s i v e traffi c vol umes on existing surface stre e t s , pa rt icularly Pome rado Road , th e propo sed dev el opment sho ul d on ly proceed as adequate t ra nspo rt a ti o n fa cil ities become avai labl e to prov ide access to and from t h e propo sed commun ity. A Transporta tion F a c il iti e s Phas ing Pl an shoul d, therefore, be i n c o r po r a ted into the p l a n n e d commu ni ty text • . 5. Page 4-61 : The roa dway c a p a c i t i e s 1" T a b l e 12 a re more pro perl y te rmed "approximate ·ma ximum ADT tI , as the City street des ign standards . C o u n c i l Pol icy 600 -4, Appe n d i x 111 identi fies . Appropri ate ma x i m um ADT are g e n e rally level of s e rv i c e "e" v o l u me s , wh ich are used for d e s ign i n g street fa ci lit ies, and in no m a n n er represent the "capac ityJl for the J 3-2 3-3 3-4 s t ree t fa c i l fty . In addi tion, the approximate ma x i mum AOT used by the 3-5 Ci ty is di ffe re nt for a cou ple of cl a ssificati ons . T h e mo st important di ffere nce is in the prima ry classi fi cation (termed IJ primary a r t e r i a l J l fn the City of San Diego), where a 50 ,0 0 0 VPT (ADT ) is used by the City of San D i e g o where the six l a n e fa ci lity is bu i lt to prima ry arterial standards and t h e re is fu ll contro l of acc es s f rom abutti ng p rope r ty . Th is EIR uses on ly 45 ,000 . The Ci ty uses 40 ,000 if it is a six-l ane major stree t with m a j o r stre et de sign standards and di rect dri veway a cce s s p e rm i t t ed . 6. Page 4-65 to 4-69 (Tables 13 t h rc ug h 17 ) -There are a number of erro.rs in the ass ume d appro ximate m a x i mum ADT for streets in the Ci ty of S a n Di ego in t he s e ta bles. We re comme nd the fo l lowing c h a nge s , based u po n current adopted pl ans of the City of San Di ego : o Mi ra Mesa Boul evard, east of I n te rsta t e 15 is a si x-l ane major s t re e t, wi th an approximate maximum AD T of 40 ,000. � 0 M e rcy Road east of Inters tate 15 is a six-l ane p r i ma ry arte r ial , wi th an a p p rOX i m a t e ma ximum ADT of 50 ,000 . o P owa y Road , immed iately e a s t of Interstate 15 is a s1 x-l ane p r 1 m a ry arteri al , wi th an approx imate ma ximum ADT of 50 ,000 . East of S a b r e Spri ngs Parkway , it is a six-l ane m a j o r street (40 ,000 ADT ) • 12-6 3-6 4 San Dieg o County Arch aeological Society , Inc . Environmental Impact R ep ort Review Com:m.i ttee To : Subject: P. O. Box A-81 106 San Diego . CA 92138 Mr. John Bridg es Senior Planner City of Poway P. O. Box 78.5 May 22, 198.5 Poway , Ca.lifornia 9.2064 llra.i't Environmental Impact Report South Poway Planned Community Development Plan RECE IVED MAY 2,1 i925 CITY OF POWAY PLANNING DEP-;', Dear Mr. Bridg e s : Thank you for the copy of the technical appendices for the subject DmIR. which you recently s en t to 500AS in response t o my l e tter of May 6th. With this additi onal. in:f'omation in hand, I have the following comments to offe r, in addition to those in my earlier letter: 1. Page 16 of Appendix F is a map showing the locations of the s1 tes which. are di5cussed in the re port as be ing in the pl an area.. In order to av oid the publicizing of archaeologica.1 site l o cat ions , the City should remove such map s 4-1 from environmental. d o cwn e n t s and only provide the m to responsible individuals and groups which ne e d them for review purposes . 5i t e record follllS pre sent the same risk. 2. Page 19 of Appendix F ctiSCUBSBS surve y methods , but wi thout clearly stating what survey spacing �&S ut ilized and what areas we re surveyed. The description of the survey procedure, with two persons on th e ridge tops and t�o in the bottom of the drainag es , Bounds potentially inadequate . Concern is he ight ened by the wording of the December 12. 1984, SRS letter included in AppendiA F, since it indicates that it was necessary to go back again to s urve y )64 a cre s which "had. not been inspected pre vi ously by the Na.tive Am erican Archa e ological Ass istants ". Antoinette LaChapp a and Erwin Osuna. But page 19 states that L aChappa and Osuna were part of the original survey cre w, which c o vered "all. but the steepest slopes". Beeler Creek , where the isolate SRS-70o-) was recorded , certainly is not one of the steep slope s. Furthermore , page 19 indicates that the survey methode were sub j e ct to "budgeted time constraint s" which may have influenced the qu ality of the survey work. �QA makes no provision for reduced standards b e cause someone may have put themeel ve s in a. tight financial 5i tuation. ). Pages 1 7 and 18 of Appendix F discuss the results of the recoxds search 4-2 without indicating which site s fall within the planning area. We presume that the three dis cussed are the only ones, but this n e eds to be con£ixmed . Also 4-3 needed is an ident ification of re c o rded sites which are cl o s e to the pro ject b oundarie s , to permit evaluat ion of secondary Or indirect impact s . 12-9 -2- San Diego County Archaeological Society, Inc . TO I Subject� Date: M.r. John Bridges, Senior Pl anner , City of Poway South Poway Planned Communi ty Development Plan DEI.R May 2.2, 1985 4. Page 21 of Appendix F indica t e s that aite :records were submi tted to San Diego State University (misnamed. as C&lifornia. State University at San Diego on that page). Loca.l practice is to alao record all sites a.t the San Diego Museum of Man. 5. The December 12th SRS letter states that SRS-700-3 , recorded as an isolate, W8.S fotlIld. in an area of "extensive excavat i ons , manifested by large bac!r..d.i.rt pils::.". Tt.J.s 6iJ6gaStS that this area was p othunt ed , al though the report do es no t indicate the possible cause for the excavations. Given this . it seams very strange that teet units are not be ing called for in this are at and that SRS -?QO-3 1s being reco:rded as an iso4te . Extensive p othun t ing certainly sugge sts that the p othunters found something . and the project archaeologists should investigate the vicinity to ascertain the nature of the site and to record it accordingly. 0 6. Also related. to this "isolate ". the a.pp endix, in the December 12th letter, states that "it is unlikely that the handstone was discovered at the location of its use". This sugg e s ts movement within the site . But the DEIR. on page 4-41, states "The dis turbed. nature of this location sUUests that the handst one did not originate here." This sugg ests trall.Sl?ort from out side the site . The JEIR and a.p pendix should be brought into conformity. Presumably , the app endix has the correct wording . 7. The IlEIR fails to addre ss indirect imp acts , as required by CEQA. Such impacts can result from extension of utilities and roads, from construction activities extanding beyo nd the pro ject bound aries .o so i l import/exp ort , local po pulat i on in crease resulting in increased site vis i tat ion and pothunting , etc. Many of these impac ts are mitiga.ble . �DCAS a!'llreciates the opportunity to parti cipate in the environmental review pro c e ss of the City of Poway, and looks forward to continued mu�ual cooperation to protec t cultural re s ource s in the City of Poway . co : SIlS . Inc . SDCAS President file S inc erely , Q----. 1'-51 -�o r;' ,� ��'W�oyle ,· jr .---r'O) 0 {r' Chairperson, EIR Review Committee 12-10 4-5 4-6 4-7 SB -., 0 :-.� 'AFINO. mTCHER & lR'l ONDE. xc. Planning Design COnS1.l lifl tion May 23 , 1985 33540 .00 John Bridges City of poway Planning Se rvices Depa r tmen t 13202 poway Ro ad poway , CA 92064 5 '.1 u'r' C) Q ' .. :-::,)-, .. ,. f...J v I� ..... c!n' GF P":'YvVA Y PL..ANr-.�ING S:::P�;·. SUBJECT : S o uth poway Pl ann ed Community Draft EIR De ar John . As repres entatives of the landowners of the 4OQ-ac re county -i s l an d -ad j ac ent to the South Poway Planned Commun ity we feel compelled to respond to yo ur EIR on the proposed proj ect . Ou r comments have as mu ch to do with the planning an d timing of the proj ect itself , as with the adequacy of the EIR , nonethel ess we wan ted to use thi s opportuni ty to voice some concerns . First of al l, we we re disappo inted to discove r th a t the EIR made no me ntion of our proposed plan amendmen t, which has been in p r o c e s s since summer -of -1984." S i n c e co pies of our project plans have been made ava ilable to both you and the pro ject pl anne r at PRe (Rikki Alberson ) since last fall , you are of course awa re of both the gr ading and land use proposals for the site. Whi le it is true that our cl ient 's property is still a cou n ty island , it has been planned fo r devel opme nt in the City of San Diego s inc e 1980, when it was shown as a near term plan amendment in t h e Mirama r Ra nch No rth community Pl an. Since then , it has beco�e mo re s ens i b l e to process our pr oject as pa r t of the Sc r ipp s Miramar Ra nch plan . It is i mpo r tan t that the plans for our prope rty be recogn ized in yo ur EIR , as many of your transpo rtation propos als affect no t only our area but a wi d e r commun ity. Ou r s e c o n d conce rn is the apparent failure of the South poway pla ns to include a conceptual grading study , as we have done for our plans . To suggest land uses and ma jor regional transportation linkages in the abs ence of at least a prelimina ry enginee ring study seems risky , espec ially when al l pl anned areas in the City of San Diego have such studies . If such studi es a re avai lab le , they have n o t been prov ided to us , the ci ty of San Di ego , or the Scripps Ranch Pl ann ing Commi ttee , and have not been ad dressed in the EIR. {(i F) Kt'ilm.V rilla Rllold. Suilp �Ot • San Diego. Californ ia ' \):?f'Zl 12-11 ',' 5-1 5-2 SB (0 -. --'-page Two May 23 , 1985 Finally , we c a nno t at this point suppo rt yo ur project 's proposal to use ou r property fo r a p r i me arter ial connection to Interstate IS , in the absense of a phasing and fin an c ing pl an. Although we were d e l i ght ed to read on page 4-4 9 th a t ·!�plementaticn of the propos ed proj ect wo uld c rea te (a reg ional ly needed e ast-we st ) connect ing link , the South poway Arte rial between Inters tate 15 and state Ro u t e 67 R, we suspect that the d ev e l o pe r s of South poway have yet to agree to fund such a link . unles s and until the y are able to propose a rational cons truction mechan ism fo r off-s ite transpo rat ion sys tem lin k s necessitated arimarily � their prQject, we do not feel an o bl i g a t ion to reflect their proposals on our pl ans . Thank yo u for yo ur cons ide ration of our �oncerns in th is matter. Since rely , �Y'�ICP 7 Pl anning Cons ul tant SKL :sas cc : El len Mo s l e y , City of San Diego Vi cky To uchs tone , City of San Diego GUB Theberge Rikk i Alberson, PRe 12-12 5-3 6 Mem orand um To Subject I 1. P rp j fl c t� C O cfr d iAa1 0 r R�sQ6rc4s A6 enJy May 28 , 198 5 2. City of poway P.O. Box 785 poway , CA 92064 [ru ��\V]� 'm MAY 3 019851 ftA te Clearinghom;. Sou th Poway p l a nned C omm u n ity Deve lopment Plan, San D i e g o County , SCH-8 405 300S We have revie wed the D r a f t EIR for the �roposed p r o j e ct de scrib ing the p o t e n t i a l environmental imp a c t s of the developm ent of a 2,SO Q-acre planned c ommu n i ty th at i n c l ud es a mix of liQht industrial, re sident ial , and c omme r c ial uses located in the s ou t h e rn p o r t i on of the City of p o way . We f i nd that the do cumen t in its present form fails to p rov i de quan titative inf o rm a t i o n regard ing t h e ac reag es of v ar i o u s hab itat typ es and the prec ise project i mp a c ts upo n tha t habitatA In add ition , al tho ug h t h e DE IR does commit to p ro v i d e some l e v e l of protect ion to imp o r t a n t natural resource s, it does not specif ically identify those measures . Given the ra the r general n a tu r e of t he DEIR it is not po ss ible for us t o assess the extent of adverse im pa cts of the proj e ct nor to evaluate the adequacy of p r opo s e d mitigation measures . Th e De p a rtmen t recommends tha t th e fo llowing ac t i o n s be taken to ensure tha t su ff icient bioloqical informat ion is c o lle c t e d and desc ribed in the DE IR to allo� fo r the a ccura t e evaluation of proj ect impa c t s on fish ana wildl ife resource s: 1. A f i eld survey d e s i g n e d to determ ine the sta tus of t h e endangered leas t Be l l 's vireo within the p r o j e c t site s ho u l d be und e r t a k e n by the projact sp o nso r to d e t e rm i ne if a n e s t i n popul ation exis ts and the extent of n e s t i ng use within all r i p a r i a n areas . The resul ts of the s t u d y should be p rov ided to t h e Dep artment of �ish and Game and the u.s. F i s h and 6-1 Wil dlife Serv ice for the ir rev iew a nd comm ent . Me asures to insure the co ntinued ex i stence of th is end ange red s pec i e s should be incorporated into th e pro ject des ign prior to impleme nting the Ci t y's approval p r o c e s s . 2. A s p e c i f i c biolog ical ev al uation of the pond s in Sub-Area 2 should be completed and m a d e av ailable for r e v iew and comme nt as sp ec ified in No . 1 ab o v e . If t h e ponds c on t a in valuable 6�2 and p r oduc t i ve ripa r i an and aqu atic h a b i t a t and/or support nes t ing �airs of the end an g e r e d leas t Se ll ts vireo , a n ac tion program to prese·rv e t h e s e env i r o nrn e n t s mu st be prov ided. 12-13 ,oJ ...... ,y<,' .. ' tat. ofCaUfomia THI It£SOURa5 AGINCY 011 CAUFOlNlA • 7 \Aem orand um o rom Dr. Go rdon P. Snow As sistan t S e c r e t a r y for Re sources; Dote I MAY 15 1985 John Br idqes City of Poway P.O •. Box 785 Poway , CA 920 64 South Poway Planned Communi ty DEIR seE • 84053008 The D epa r tm en t of C o ns e r va t i o n has rev iewed tne Draft EIR for th� so uth Poway P l a n n e d Community Draf t EIR (SCE • 84053008). The Dep a r t m e n t adminis te�s th e Sur face Mining and Reclamation Act (SMARA) at th e state level Th is i n c l u d e s clas sif ication of siqn ificant mi n e r a l resources throughout the state , and designat ion by the State Mining an d Geology B o a r d of min eral areas of statewide or r e gi o n a l significance . We have the fo llowing c o mm e nts on the Specific Plan area 's mineral r e s o u r c e s . As noted in the DElR , mo st of the Spec ific Plan area has been . classified by the D e p a r tment as containing ·significan t mi ne ral d e p o sits · (MRZ-2). Further , it has been d e s i g n ate d by the State Mining and Geo l ogy Board as ceing -Regional ly Signif icant · in terms of the site 's aggrega te d e p o s i t s . Th e DEl R does no t di scuss , however , tbe a pp l i c a b l e state requi reme nts triggered by these act ions . SMARA Sect ion 27 62 (al requ ires lead agencies to incorporate p o li c ies in t h e i r general plan w h i ch will : (1) R e c o g niz e mi ner al information classified by the State Geo logist and transmi tted by the Boar d. (2) Assist i n the management of land use Wh ich affect areas of statewide and reg ional. sign ificance . (3) Emp ha size the 'conserva tion and developmen t of identif ied miner al depos its. Al so , Section 27 63 (a) states: ·�ead a g e n c y land u s e decis ions invo lv ing areas des ign ated as being of regi onal significance shall be in a c c o r da n c e with the lead a g e n c y 's mineral resource man agement po licies and shall also , in b a l a n c i n g miner al val ues a g a ins t alt ernat ive land uses , c o ns i de r the impo rtance of these min e r a l s to their mar ket r e gion as a who le a n d n o t just their impo rtance to th e lead a g e n c y 's area of jur is diction '. 12-15 7-1 Page 2 To be con sider ed comp lete , the ?i na� EIR should recon ci le the J propos ed pr oject and th es e elements of! state law in its Land Us e _ 7 -1 Sect ion. Also incl uded sh oul d be maps of th e class i fied and designated ar eas . The DE IR notes -th at th e San Di ego Produ ct ion/C on sumpt ion Region is for ecas t to need 760 mi llion tons of aggrega tes in the ne xt 50 ye ars , but has on ly 430 mi ll ion ton s of aggr egate reserves, leaving a 330 million ton de ficit . The Final EIR sh ould note that �e res erv e �s timates ar e opt imistic: indeed , several of the sect or s in cluded as res erv es in our ear lier report ar e now proposed for de vel opme nt . As th is pr oject wou ld perman ently el im ina te th e us e of wh at the DE IR es tima�e� as 317 mill ion tons of aggr egates, the Final EIR should list the los s of aggr eqate resour ces as an unavoidab le adv er se impact . As a par ti al mi tigation for th e aggr egate loss , should th e pr oject be approved , we recommend adopt ion of the nCombination Aggr egate Mi ni ng Plan It (DEIR. p. 4-15). While th is pl an wou ld do litt le to al leviate th e regi on-wide a g greg a t e sh ort fall , it would al low uti l ization of some of the vas t resources pr es ent on th e site . Both the Depar tment of Cons arv ation and th e State Min in g and Geoloqy Board ar e extremely co ncerned over th e San Diego region 's pr oje cted aggrega te sh ort fal�. There fore p please regard this letter as a fo rmal reques t fo r you to send both the Departm ent and the Board a copy of the Final EIR pr ior to its certi fi cation hear ing. The addr ess fo r th e Mi ning and Geo logy Board is : Debor ah Herrmann, Special Representative State Mi nin g and Geo logy Board 14 16 9th Str eet, Room 1326-2 Sa cr amento, CA 95 814 If yc u have any questions on our commen ts , pl ease call' me at ( 916 ; 322-5873 . �.:.� . �/�--r- Dennis J. O'Bryan t Env ironm ental Pro gr a m Coord inator cc:: James Anderson, Ch airman Deborah Rerrmann , Special Representati ve 0346C-2 (29 2B ) 12-16 7-2 7 -� RESPONSES TO COMMENTS 12-21 1. Lette r frOil S.n Diego County Archaeolog ical Soci ety. Inc •• JUles W. Royl e. Jr ., EIR Reyf ew eo..fttee 1-1 A copy of Appendh F (Cultu ral Re sources Surv ey of the Sout h Poway Proj ect) has si nce been forwa rd ed to the Sa n Di ego Cou nty A r ch ae ol ogical So ci ety fo r revi ew. 1-2 A IIwaiver· of the p r o v i s i o n s of the Deddeh Act has been obtained ." con si stent wi th the prOVi si ons of the C a l i fo r n i a Envi ronmen tal Qual ity Act . Appen di x K (IV.E). Fundi ng responsi b il ities refe rred to in the mi tigat ion mea sure on page 4-45 are t h o s e of the p roj e c t app l i can t . 2� Latter fro. Poway Unf ff ed School Di st ri ct. St ephanie J. Austi n. Facf li ti es Pl an nf ng 2-1 . Comme nts are not ed . The E IR is hereby re vi sed to read : 1. "educati'Onal fac i liti es " rather than "educati on :1 (p. 4-1 04 . Li ne 7 in the fi rst pa ragraph ); and 2. lIeducat ional faci liti esll rath e r than lIeducational servi ces an d facl 1itiesU (p . 4-1U5, Li ne 2 in Mitiga t i o n Measure 1). 3. Letter fl"'Oll ci ty of San Df ego . Di an a L. Dugan. Envf ron.ental ()Jal 1ty Df yi s fon Pl annf ng Depa rt.ent 3-1 Th e refe renced ame ndmen ts were not i ncl uded in t h e SA NDAG traffi c fo recasts a n d are not yet in the publ ic revi ew phase of the envi r onme n t a l revi ew process at the time of th is wr iting. It is re c omme n d ed that SANDAG re-run the tra f f i G f ore c a s t s to ; nc 1 ude both the So uth Poway Pl a n n e d Commun ity and the most recent amend ment propos a 1 s by Sc r i pps Mi ramar Ra n ch and M1 ramar Ranch North . Ta b 1 e 35 of the ErR is upda ted based on re c e n t cOlllTlun i cat1 ons wi th the city of San Oi ego to ref1 ect the proposed ame ndments to these two ci ty of San Di ego cOlTl11un iti e s. Ta bl e 35 (p o 8-3 ) is hereby updat ed as fo l lows : 12-22 South Poway Arteri al was cons i dered (SANO AG A l t e r n a t i v e 8 and Mira ma r Ranch North Al terna ti ve B) as an al ternati ve to the proposed pl a n. The re port identi fi es An T s , st reet cl as sifi cati ons . cap a ci ti es, vol ume to cap acity rati os and level s of serv ice for th is and ot he r a 1 ternat i ves as i dent ifi ed in Tabl e 1. The roadways addressed incl uded Pome rado Road south to I-1 St Spri ng Canyon Road, Cyp re ss Canyon Road, and Poway Road . Pursuant to EIR traffi c mi tigati on me asu res 118 and #10 (p. 4-72 . 4-73) I o f f s ite improvement s ne ces s a r y to mi t; gate impa cts by the South Poway Pl anned Commu nity shal l be identified in deta iled, p r o ject-speci f ic traffi c stu dies at su bseq uent p1 anni ng l e v el s . In addi t i on , the proj ect shal l contri but e towa rd offs ite improveme nts on a pro ra ta ba si s. The EI R proposes ad option of SA NDAG Al terna ti ve 8, i n cl u d i n g a west erly extens ion of the South Poway Arteri al . as a bas ic mi ti gat i o n mea su re fo r impacts to the su rrounding circ ul a tion system . 3-3 Project ADT impacts on ea s terly app ro aches to each of these inter chang es are iden tified in EIR Tables 13-17 . South Poway Planned . Communi ty vol umes are anal yz ed under two di fferent ci rcul ation al ternatives (8 and 12) in wh ich the South Poway Arter ial is exten ded wes t to Me rc y Road . Thes e va l um e s should be fa ctored into cur ren t env i ronme ntal and traffi c stud ies for M i r a ma r Ranch North and Scri pps Mi ramar Ranch COlTJlluni ty Pl an amendments wh i ch add r e s s the Mercy Road interchange. Com pari son of the SAND AG �No Bui ld� At er nat ive (Tabl e 13) versus Al ternati ve 8 (Ta bl e 14 ) proj ect ed AD Ts at si x key interchange approaches (withi n the city of San Di ego just ea st of 1-15 ) indica tes that vo ll11les are red uced at fo ur of the si x ; nterchanges under Al te rnati ve 8 (wi th So ut h Poway Pl anned COOl1luni ty) re I at ive to the wNo Bui ld" A l t e rn at ; ve . 3-4 Improvements to two critical intersect ions (Po way/Pome rado and Poway/Co/Tllluni ty Road) are iden ti fi ed as need ed in ea rl y ph ases of the proj ect . Proj e ct-level traffi c stud ies addressi ng phas ing of s p e ci f i c improvemen ts wi ll be re qui red by the ci ty of Poway . 12-24 3-5 Termi nol ogy for ro adway ca paci ties ut i lized by the city of San Di ego is noted. Howeve r. the intent of Ta bl e 12 in p r ov idi ng a re l a ti v e mea sure of roa dway capaci ty is not s i g n1 f i c a nt ly chan ged whet her "dai ly desi gn capacity� or II approx imate ma ximum ADTI! is used . The ra n ge in app rox i mate max i mum ADT used by th e c1 ty of San Di ego for s i x -l a n e divi ded faci lit ies (de p e nd i ng on the degree of access cont rol from a b ut t i n g pro pert ies) is al so n ot e d . The fi gure for a s i x -l a n e divi ded f a c i lity ci ted in the EIR fal ls mi dway wi th in thi s ran g e . and its use d o e s not Si gni fi cantly affect traffi c forec asts in the EIR. 3 -6 R e v i s ed ca lculations based on ci ty of San Di ego adopted pl an s for these streets are p r e se n t e d in Ta bl e 1. In each i n sta n c e , re vi sed capaci ties (or app rox imate ma xi mum ADTs ) ex ceed those previ ous ly assumed in Ta bl es 13 t hro u g h 17 . thereby reduci ng proj ected vol ume-to-c apac ity rati os at these locati ons . As noted in the com me nt , vari ous measures to fncrease capac i ty si g ni fi c antly on Inter state 15 are being implement ed and wi ll ultimate ly red uce vo l lJ'Tle to-ca paci ty rat ios i d e nt i f ied in Tabl e 13-17. 3 -7 The Hi ramar Ra nch No rth and Scri pps Mi ramar Ranch COlTlTl uni ty Pl an a m endm ents cu rrent ly in process shoul d specifi cal ly cons i der ci rcu lation sy stems wh i ch are compat ible wi th Al t e r n a t i ve 8. The city of Poway wi ll coo pe rate wi th the city of San Diego in the process i ng of any ci rc ul at; on el emen � amendments needed to res pond to reg ional traffi c demands , however ul ti mate res ponsi bi l ity for ci ty of San Oi ego Genera 1 Pl an ame ndments rest s wi th the-ci ty of San Di ego . The potent ial for landform al teration, vi sual and l a n d use impacts from an extension of the South Poway Arte ri al th rough the uni ncor porated isl and and Mi ra mar Ranch North ;s n ot e d in t h e EIR (p. 4-70,#5). 3-8 Comment so noted . 12-26 Table 2 VOLUME TO CAPACITY RATIOS Based on City of San Diego Standards NO BUILD AL TE RNATIVE 8 ALTERNA TIVE 10 ALTER NAT IVE 11 I-' N , N '-I Hi ra Mesa (east of 1-15 ) Mercy Roa d (east of 1-15 ) Poway Road (east o f 1-15) Route 56* (east of 1-15 ) Cam ino Del Norte· (east of 1-15) W/So . WI D So . Po way P.C. Poway P .C. .85 .85 .79 .78 1.38 1.28 .86 .83 1.10 .99 W/So . WI D So. W/So . W/O So . W/50 . Poway P .c. Poway p.e. Poway p.e. Poway P.C. Poway p.e. • 77 .78 .84 .84 .85 1.00 .81 .79 .78 .RO 1.19 1.15 1.26 1.15 .34 .81 .80 .88 .87 .83 1.23 1.14 1.32 1.22 1.24 * App rox 1�ate ma Kimum ADT undefi ned in ci ty of San Di ego St re et Desi gn St andard s; 65,000 ADT uti lized to cal cu l ate rat ios. W/O So . Poway P .c. .84 .79 1.22 .81 1.14 ALTERNAT IVE 12 W/So . WID So . Poway P.c. Po way P.C • .77 .77 .98 .78 1.23 1.19 .84 .83 1.10 .99 3-9 Project traffi c vol LlTle impacts on reg iona l and local fa ci lities under both Al ternati ves 8 and 11 are identi fi ed in the EIR, Tabl es 14 and 16 . A t th i 5 t i me, the sel ect i on of a SR 125 Al t e r nat i ve has not been res 01 ved between the c 1 t 1 es of Poway a nd San 0" ego . Sel ection of on e of thes e re giona l al ternat ives by the ci ties of Poway and San Diego wi ll fac i lit ate fu rther ana l ys i S of local and reg ional traffi c ci rcul at ion effect s. In addition, the M1 ramar Ra nch North Transportati on Anal y si s pro vi des th is information. Tabl e 1 in response 3-2 tabul ates cum ul a tive regi ona l traffi c and ci rc ul a tion impacts for SANDAG Al terna ti ves 8 and 11 . 3-10 Short -and long-term water qu a 1 ity co ntrol mea sures identi fied in Sect ion 4.3.3 of the EIR w i l l be requt red of subseq uent dev el op ment proposal s. Spe ci f ic g u ide l i n es re garding re vegetat ion of sl opes are pro vided in the afo rem ent i oned Devel opment Plan and Devel opment St andard s. In additi on to these mea su res , Mpari an areas shal l be protected w i t h dra i nage con t r ol s as i d e n t i f ied in miti gation measure 5, Sect ion 4.4 .3 of BIOLOGI CAL RE SOURCES . Subs equent pl an re vi-ew by the city of Poway shal l ensure compl i ance wi th these mi ti gation mea su res . 3-11 COITment noted. Stand ards re lated to materi al s, hei ght . co l or , si te co verage, et c. are prov ided in V01 ume 2. D eve l opme n t Stan dards . 3-12 S e e res ponse 3-1. 4. Letter fro. San Di ego County Archaeol ogi cal Soci ety . Inc •• dues W. 4-1 Royl e. Jr •• EIR Re view Ca..ittee COfIITIent n o t ed . locations, maps EIR appendi ces . In order to avoi d publ ici;z1ng archaeol og ical site and site record forms were incl uded only in the The ap pendi ces are av a ila bl e to respons ible agen- cies, indi vi dual s or groups for rev iew pur po ses . 12-28 4-2 The ent ire South P o w ay Pl anned Conmuni ty 5i t e was su rveyed on foo t e x c lud i n g al l but the steepest s l opes fn e x c es s of 30 p e r c e n t . Sfnce the Ipai a ss i stant s were u n a b l e to at t e n d the entf re 1nftial survey, s om e portions of the sfte we r e re-su rveyed with the Ipa1 a s si s t a nt s in attend ance . A t r a n s e c t su rvey of th e en t i re pro p e r ty was c o n si d e r ed fmp ract 1cal prfma ri ly as a res u l t of steep s l o p e s and the pro ject si z e. The SRS surveys requ i re d el even days in September and Dec embe r 1984 . In add i t i on . the SRS su rveys we re p r ec e d e d by t h e fi rst p ro p e rt y su rv ey menti oned on p a g e 4-39 in th e EIR . 4-3 The th ree si tes di scus sed in t h e su rvey a r e the onl y pr evi ous ly recorded si tes located within or adj acent to ies. Th ese a r e t h e o n l y sites co n side r ed to lik el ihood of i n d i re c t impacts . Potent ial these si t e s are identi fi ed on pa ge 4-42 of the the proj ect boundar have a ny s1 gn ifi cant indi rect impac t s to El R. The locati on of r e cor d e d si tes wi thi n t h e proj ect vicinity are avai labl e from Archaeol og i cal Site Records . As noted on pa ge 17 , mo st of the nea rby sites a r e cl u stered al o ng poway Creek and ot h e r water sou rces . 4-4 Corrm ent noted . The new si tes wi ll be re co rd e d at the S a n Diego Mus eum of Ma n. 4-5 The s i t e of the isol ate , SRS-700-3, is in an a r e a di stu rbed by mechani ca 1 excavat; on s for constru ct; on purposes rather than pot hunti ng. 4-6 Bot h statemen ts are intended to suggest that th e isol ate was trans p o rted f r om n e a r by . 4-7 Conraent no t ed . Specific indi rect impa cts and ap pro p r iate miti ga tion measu res s h al l be identi fied at s u bsequ ent p l ann i ng level s, si nce t h e pre c ise location of roadways . uti lities and such are unk nown at thi s stage . The f o l l ow i n g imp a ct and co rrespond ing mi ti gation me asure are hereby added to the EI R: 12-29 Offs ;te con struct ion ac ti v ity (eg.. s t reet and u t i l i ty ex t e nsi o n s ) coul d result in indi rect i mpac t s to any archae o log i c a l re sources wh 1ch may be loc a t ed in s u rro u nd i n g areas (pa y e 4-43 , new paragraph 5). 9. A dd i t i o n al literature review or su rveys fo r pot ent ial indi rect archaeological i m pa c t s resu lting from o f f s i t e constru cti on ac t i v i t y (eg., street and ut i lity exten s i o n s , offs ite grad ing) shoul d be requ i red in c o n jun c ti o n wi th subsequent detailed pl a n s (page 4-45 , n e w meas ure 19 ). 5 • Lette r f ra. Sa f1 no. But cher • a 0 rwonde • Inc . • Susan 1(. lay . AI CP • Pl anning Con sul tant 5-1 Th e Il co u n ty i s � and" amen dment t o the Sc ri p p s Mi ramar Ranch Corrmun i ty P l a n is re fl ecte d in ,.e sponses 3-1 to 3-9 to the city of San Diego. 5-2 Vol lJT1es 1 a n d 2, Devel o�ent Pl an and Oevel opment S t a n d ards . pro vide. land form and g r a d i n g concept s and gradi ng st andards fo r the p ro j e ct . Detai l ed gra ding and engi nee r; ng studies w i ll be p r e pared at subsequent level s of d e v e l o pm ent . 5-3 The Overa ll Impl eme ntation Plan c o n tained in the Devel opment Pl an provi des a g e n e ra l phasing p l a n of p u b l i c improvements (in cl u d i n g the Sout h Poway Arteri a 1) an d fi nanc; n9 mec hani sms ava 11 ab 1 e fo r these i m p ro v em e nt s . A devel opment agreement (or other mechanism ) between the ci t y of P o way and the proj ect app 1 i c a n t wi 11 en su re p r o p e r and timely con st ru ction of o n s i t e and offsite improvements. 6. Letter fro. Cal iforni a Depart.ent of Fi sh and Ga.e , Jack C. Parnel l 6-1 Least Bell is vi reo is now a cand idate fo r f e d e ra l lis ti ng as an en dangered speCi es and is g e ner a l l y re stri ct ed to wi llow ri pari an habi tats (more spe ci fi cal ly , w ith weedy brush u nd e rst o ry ). Two s u c h loc al ities on t he proj ect s i t e are fo und al o n g Beeler Creek --one is very near the P a d re Transit mining ope rat ions . Al l 12-30 ri pari an wi llow areas on the site were su rvey ed for vegetat ion in September 1984 by the PBR Sen ior Bi ol o gist. No sightings we re made or indicat ions observed of least Be llIs vireo presence. nt is is al so true of the or iginal November 1982 biolo gical s u rvey wh ich em pha si zed ri pari an areas and Beel er Canyon . The onl y wi llow ri parian areas ons ite with potenti al ly suitabl e habi tat for least Be llis vi reo are res tri cted to the Beeler Creek area , which wi ll he retai ned in open space . Be llis vi reo co uld oc cur . re commended spring biological A su rvey fo r the presence of 1 east however, in con junc tion wi th the su rv ey, (mi ti gation measure UO ). 6 -2 These li ve stock-wateri ng pond s are hi ghly di stu rbed and may even be seasonally dry. The ri pa rian brush associ ated wi th the ponds do not prov i d e sui tabl e hab itat for the least Be llis vi reo . Loss of these pon ds is con sidered an unavoi dabl e adverse i m p a ct . 6-3 Pages 4-28 th rough 4-32 of the EI R quant 1fy the vegetat ion ty pes by percent age of tota l site area . The approx i mate percenta ges and acreages of vegetati on ty pes are as fol lows : Coastal sage scrub : Grass land: Cha pa rral Mi xed : Chamise: R i pa ri a n : Distu rbed : 60-65% 10-15% 9% 4% 4-5% 5% (1,5 00-1 ,550 ac res ) (250-375 acres ) (225 acres ) (l00 acres ) (100-125 acres ) (125 ac res ) As indi cated in the EIR , approx i matel y 50% of the tot al vegetat ion ons ite is antici pated to be impacted, primari ly in the cen tral hi ghl ands . Th is impacted area en compa sses mos tly co astal sage scrub , some mi xed c h aparra l . isol ated grassl and pockets , and the smal l pon ds feat u r 1 ng ri pa rhn bru sh growt h . Exhi bi t 13 of the EIR il l ustrates biol o gi c reso urces. Spe ci fi c impacts to wi ldl ife hab itat are ident ified on pa ges 4-33 throug h 4-36 . Effec ts on key res ou rces are des cri bed on pages 12-31 4-35 and 4-36 . Miti gation measu re 1 on p a g e 4-36 of th e EI R i nd i c at e s that spec Hi c p rov i s i o n s fo r preserv ati on and mana gement o f open space . incl ud ing sign ificant woo d l and re sou rce areas and grass l and s l o p e s , shal l be c o n t a i ne d in the Devel opm ent Plan. Mi ti gation measure 9 p ro v i de s for pres ervation and man a gemen t of r ipa r i a n areas wi thin the ru ral resi dential areas . Co mp l i a n c e wi th these m i t i ga t i o n s shal l be accompl ished by ci ty re view at subsequent p l a n n ing l e v e l s . Speci f ic locations and limi ts of p r o p o s e d de tent ion bas ins have not yet b een ident ified. D e v el o pm e n t of these faci lities wi ll r e s u lt in the loss of add itional v eget a t i o n and ha bi tat . The bases of b a s i n si z ing is a d d r e s s e d in the EIR Vol lmle 4 A p p e nd ix 0 Hyd r ologica l Ana lysi s. a co py of wh ich is be i n g forwa rded to th e De partm ent of F 1 sh an d Game . become the re spon s ibil ity As soci at ion. 6-4 Comme nt s o n ot ed . Mai nte nance of such faci 11ties wi ll of t h e Mas ter Property Owne r l s 7. Letter fro. Depart.ent of Co nservati on -Offi ce of the Di rector . Denni s J. O I Bryant 7-1 C omen t so no ted . Th e ci ty of Poway Comprehens ive Plan pol icies re q u; re t hat the s and a n d 9 ra ve 1 r e s o u rces in the So uth Poway a r e a be ev al uated prior to extensi ve d e v el o pm e nt and th at an a s s essme n t of t h e val ue of the d e p o sits be made prior to approv al of devel op me nt . An An a lysis of Ag gregate R e s o urc e s for the p r o j e c t area was pe rformed by PRe Engi neeri ng . The EIR in Sect ion 4.2.2. ass esses and eval uat es t h e agg regate re sources on site. the re gi o nal si gni fi cance . and al ternat ives for recoveri ng, in part . t h e s e resou rces as identi fied in thi s ana lysis . D es ign a t e d Mi neral Res ou rce Zones are mapped a c c ordi n g to c1 a s sifi ca ti o n on Ex hi bit 11 of the EIR a n d also in A p p e n d ix C of the t e c h n i c a l append ices . 7-2 Conrnen t noted . The Dev el opment Plan pro v i d e s for ex p an s ion of the ex isting mi n i n g ope rati on and fo r on site uti lization of agg r e gat e 12-32 rec overed duri ng g r a d i n g . However , most of the a g g regat e ons ite wi ll be cOrml1 tted to devel opment . Th is is cons idered an unavo i d abl e ad verse impact of the proj ect . 7-3 Comment so noted . 8. Letter fro. Cal iforni a Office of Pl anni ng and Resea rch . John B. Ohanian Comm ent noted . 9. Letter fro. Cal ifornia Ai r Resources Bo ard . James D. Boyd 9-1 Comment noted . The fo l lowing is he reby added to the EIR. Ons ite trans it co ord inators sh ou ld be re qui red by the ci ty in order to develop and impl eme nt carpool ing. vanpool ing prog rams with in the ernpl oym ent/corrmerci al a rea of the So uth Poway Pl an ned Community. Ten pe rcent of the o n s i t e emp l oym ent area parki ng spaces should be preferenti al spaces des i gnated fo r ca rpools/ vanpool s (Miti gation Measure NB , page 4-82). 12-33 AP PENDICES Vo lu.e 4 -Appendi ces (Bound unde� Sepa�ate Cove�) A. Not ice of Preparat 1 on B. Correspondence C. Analysis of Aggregate Resources Buehler Plann fng Area D. Hyd rol ogi cal Ana lyses Bueh ler-Pl anni ng Area E. PBR Biologi cal Su �vey F. Cul tural Resources Su rvey of the South Poway Project G. South Poway Pl anned Ca.mun ity T�aff1 c St� H. Air Qua l ity Ca lculations and Assu.pti ons I. Noi se Analys is J. Po lice and Fi �e Servi ces Buehle� P l an n i n g Area K. Water-and Sewerage Faci liti es for-Buehler Pl anning Area L. Vi sual Ana lysis Buehler-Plann ing Area