Storm Water Management Facilities Maintenance Agreement 2015-0047780RECORDING REQUESTED BY.
CITY OF POWAY
dC�) AND WHEN RECORDED MAIL TO
CITY CLERK
CITY OF POWAY
P O BOX 789
POWAY CA 92074
APN: 277 - 220 -36
DOC# 2015 - 0047780
1 111111 VIII VIII VIII IIII 111111 VIII VIII VIII VIII VIII VIII IIII IIII
Feb 03, 2015 11:51 AM
OFFICIAL RECORDS
Ernest J. Dronenburg, Jr
SAN DIEGO COUNTY RECORDER
FEES. $0.00
PCOR N/A
(THIS SPACE FOR RECORDER'S USE)
STORM WATER MANAGEMENT FACILITIES
MAINTENANCE AGREEMENT
Boghosian Residence 18710 Heritage Drive
(B13 -0658)
The undersigned grantor(s) declares:
Documentary Transfer Tax is $ -0- pursuant to R & T Code 11922 (conveyance to a Govemment Agency)
This AGREEMENT for the maintenance and repair of certain Storm Water Management Facilities is
entered into between the Property Owner(s) Charlie H. Boghosian (hereinafter referred to collectively
as "OWNER ") and the City of Poway (hereinafter referred to as "CITY ") for the benefit of the CITY, the
OWNER, the successors in interest to the CITY or the OWNER, and the public generally.
WHEREAS, OWNER is the owner of certain real property located in the City of Poway, California,
more particularly described as Lot 36 of City of Poway Tract No. 98 -02 Heritage Ranch Estates, in the
City of Poway, County of San Diego, State of California, according to Map thereof No. 14388, filed in
the office of the County Recorder of San Diego County, May 8, 2002 (hereinafter referred to as the
"PROPERTY "), which is developed as a single - family residence, in accordance with applications for
Minor Development Review Application 13 -0001, and Building Permit No. B13 -0658, which are on file
with the CITY. This Agreement is required as a condition of approval for such development.
WHEREAS, in accordance with the City of Poway's Standard Urban Storm Water Mitigation Plan,
Poway Municipal Code, Chapter 16, Division VI (the "SUSMP Ordinance"), the City of Poway
Subdivision Ordinance, the City of Poway Zoning Ordinance, the City of Poway Grading Ordinance
and/or other ordinances or regulations of CITY which regulate land development and urban runoff,
OWNER has proposed that storm water runoff from the PROPERTY be managed by the use of the
following Storm Water Management Facilities which are identified as "Best Management Practices" or
BMPs":
Two bioretention basins as shown in the approved Water Quality Technical Report
The precise location(s) and extent of the Bi are indicated in the approved Water Quality Technical
Report on file with CITY's Development Services Department. The manner and standards by which
the BMPs must be repaired and maintained in order to retain their effectiveness are as set forth in the
Operation and Maintenance Plan (hereinafter "O &M PLAN "), which is attached hereto and
incorporated herein as Exhibit "A ".
WHEREAS, OWNER's representations that the Bi will be maintained have been relied upon by
CITY in approving OWNER's development applications. It is the purpose of this Agreement to assure
that the Bl are maintained, by creating obligations that are enforceable against the OWNER and
the OWNER's successors in interest in the PROPERTY. It is intended that these obligations be
enforceable notwithstanding other provisions related to BMP maintenance that are provided by law.
NOW, THEREFORE, for consideration of (a) CITY's approval of the above development applications
and (b) the mutual covenants set forth herein, IT IS HEREBY AGREED AS FOLLOWS:
1. Maintenance of Storm Water Management Facilities. OWNER agrees, for itself and its
successors in interest, to all or any portion of the PROPERTY, to comply in all respects with
the requirements of the SUSMP Ordinance with regards to the maintenance of BMPs, and in
particular agrees to perform, at its sole cost, expense and liability, the following
"MAINTENANCE ACTIVITIES ": all inspections, cleaning, repairs, servicing, maintenance and
other actions specified in the O &M PLAN, with respect to all of the BMPs listed above, at the
times and in the manner specified in the O &M PLAN. OWNER shall keep records of this
maintenance and provide copies of such records and annual certification of maintenance as
requested by CITY. OWNER shall initiate, perform and complete all MAINTENANCE
ACTIVITIES at the required time, without request or demand from CITY or any other agency.
OWNER further agrees that "MAINTENANCE ACTIVITIES" shall include replacement or
modification of the BMPs in the event of failure. Replacement shall be with an identical type,
size and model of BMP, except that:
(a) The City Engineer may authorize substitution of an alternative BMP if he or she
determines that it will be as effective as the failed BMP, and
(b) If the failure of the BMP, in the judgment of the City Engineer, indicates that the BMP in
use is inappropriate or inadequate to the circumstances, the BMP must be modified or
replaced with a more effective BMP to prevent future failure in the same or similar
circumstances.
2. Notices. OWNER further agrees that it shall, prior to transferring ownership of any land on
which any of the above BMPs are located, or any lot or portion of the PROPERTY which is
served by the above BMPs, and also prior to transferring ownership of any such BMP, provide
clear written notice of the above described maintenance obligations to the transferee.
3. CITY's Right to Perform Maintenance. It is agreed that CITY shall have the right, but not the
obligation, to elect to perform any or all of the MAINTENANCE ACTIVITIES if, in the CITY's
sole judgment, OWNER has failed to perform the same. Such maintenance by the CITY shall
be conducted in accordance with the nuisance abatement procedures set forth in Poway
Municipal Code Chapter 8.72. In the case of maintenance performed by the CITY, it may be
performed by CITY forces, or a contractor hired by the CITY, at the CITY's sole election. It is
recognized and understood that the CITY makes no representation that it intends to or will
perform any of the MAINTENANCE ACTIVITIES, and any election by CITY to perform any of
the MAINTENANCE ACTIVITIES shall in no way relieve OWNER of its continuing
maintenance obligations under this agreement- If CITY elects to perform any of the
MAINTENANCE ACTIVITIES, it is understood that CITY shall be deemed to be acting as the
agent of the OWNER and said work shall be without warranty or representation by CITY as to
safety or effectiveness, shall be deemed to be accepted by OWNER "as is ", and shall be
covered by OWNER's indemnity provisions below.
If CITY performs any of the MAINTENANCE ACTIVITIES, after CITY has demanded that
OWNER perform the same and OWNER has failed to do so within a reasonable time stated in
the CITY's demand, then OWNER shall pay all of CITY's costs incurred in performing the
MAINTENANCE ACTIVITIES, plus an administrative fee. OWNER's obligation to pay CITY's
costs of performing MAINTENANCE ACTIVITIES is a continuing obligation. If OWNER fails to
pay CITY's costs for performing MAINTENANCE ACTIVITIES, CITY may assess a lien on the
SWMFMA Boghosian Page 2
property or properties of the responsible parties pursuant to the procedures set forth in Poway
Municipal Code Chapter 8.72.
4. Grant of Easement to CITY. OWNER hereby grants to CITY a perpetual easement over,
under and across all of the property, for purposes of accessing the BMPs, inspecting the
BMPs, and performing any of the MAINTENANCE ACTIVITIES specified in Paragraph 1
above. CITY shall have the right, at any time and without prior notice to OWNER, to enter
upon any part of said area as may be necessary or convenient for such purposes. OWNER
shall at all times maintain the PROPERTY so as to make CITY's access clear and
unobstructed.
5. Administration of Agreement for CITY. CITY hereby designates the City Engineer as the
officer charged with responsibility and authority to administer this Agreement on behalf of
CITY. Any notice or communication to the City related to the implementation of this
Agreement shall be addressed to:
City Engineer
City of Poway
13325 Civic Center Drive
Poway, CA 92064
6. Defense and Indemnity. CITY shall not be liable for, and OWNER and its successors in
interest shall defend and indemnify CITY and the employees and agents of CITY (collectively
"CITY PARTIES "), against any and all claims, demands, liability, judgments, awards, fines,
mechanic's liens or other liens, labor disputes, losses, damages, expenses, charges or costs
of any kind or character, including attorneys' fees and court costs (hereinafter collectively
referred to as "CLAIMS "), related to this Agreement and arising either directly or indirectly from
any act, error, omission or negligence of OWNER, OWNER's successors, or their contractors,
licensees, agents, servants or employees, including, without limitation, claims caused by the
concurrent negligent act, error or omission, whether active or passive, of CITY PARTIES.
OWNER shall have no obligation, however, to defend or indemnify CITY PARTIES from a
claim if it is determined by a court of competent jurisdiction that such claim was caused by the
sole negligence or willful misconduct of CITY PARTIES. Nothing in this Agreement, CITY's
approval of the development application or plans and specifications, or inspection of the work
is intended to acknowledge responsibility for any such matter, and CITY PARTIES shall have
absolutely no responsibility or liability therefore unless otherwise provided by applicable law.
7. Allocation of Costs. Following the sale or transfer of any of the individual residential lots by
OWNER, the cost of the MAINTENANCE ACTIVITIES required by this Agreement shall be
divided equally by all lot owners, and paid by each lot owner or his or her heirs, assigns and
successors in interest. This requirement shall be binding on all lot owners in the subdivision,
and each shall be responsible for his or her equal share of the cost associated with the
maintenance.
8. Agreement Binds Successors and Runs With the PROPERTY. It is understood and
agreed that the terms, covenants and conditions herein contained shall constitute covenants
running with the land and shall be binding upon the heirs, executors, administrators,
successors and assigns of OWNER and CITY, shall be deemed to be for the benefit of all
persons owning any interest in the PROPERTY (including the interest of CITY or its
successors in the easement granted herein). It is the intent of the parties hereto that this
Agreement shall be recorded and shall be binding upon all persons purchasing or otherwise
acquiring all or any lot, unit or other portion of the PROPERTY, who shall be deemed to have
consented to and become bound by all the provisions hereof.
SWMFMA Boghosian Page 3
9. OWNER's Continuing Responsibilities Where Work Commenced or Permit Obtained.
Notwithstanding any other provision of this Agreement, no transfer or conveyance of the
PROPERTY or any portion thereof shall in any way relieve OWNER of or otherwise affect
OWNER's responsibilities for installation or maintenance of BMPs which may have arisen
under the ordinances or regulations of CITY referred to in this Agreement, or other federal,
state or CITY laws, on account of OWNER having obtained a permit which creates such
obligations or having commenced grading, construction or other land disturbance work.
10. Amendment and Release. The terms of this Agreement may be modified only by a written
amendment approved and signed by the Director of Development Services acting on behalf of
CITY and by OWNER or OWNER's successor(s) in interest. This Agreement may be
terminated and OWNER and the PROPERTY released from the covenants set forth herein, by
a release, which CITY may execute if it determines that another mechanism will assure the
ongoing maintenance of the BMPs or that it is no longer necessary to assure such
maintenance.
11. Governing Law and Severability. This Agreement shall be governed by the laws of the
State of California. Venue in any action related to this Agreement shall be in the Superior
Court of the State of California, County of San Diego. OWNER hereby waives any right to
remove any such action from San Diego County as is otherwise permitted by California Code
of Civil Procedure Section 394. In the event that any of the provisions of this Agreement are
held to be unenforceable or invalid by any court of competent jurisdiction, the validity, and
enforceability of the remaining provisions shall not be affected thereby.
IN WITNESS WHEREOF, the parties have executed this Agreement on the dates set forth
hereinafter.
OWNER: SEE ATTACHED
FOR NOTARY CERTIFICATE
By: " — Date:
Charlie H. Boghosian
CITY OF POWAY:
,XO Date: Zoo �S
Robert J. Manis
Director of Development Services
APPROVED AS TO FORM:
Office of the City Attorney
Morga le City ttorney
Attachment
1. Certificate of Acceptance
WengseMLand Development Projects12013\1313 -0658 Boghoslan\.SWFMA, docx
APPROVED AS TO CONTENT:
Engineering Division
4�z
S ven Crosby, P.E.
City Engineer
SWMFMA Boghosian Page 4
CALIFORNIA ALL- PURPOSE
CERTIFICATE OF ACKNOWLEDGMENT
State of California
County of San Diego
On P ZG IN before me, /1/1711`e
(}far
personally appeared C�GYII GJr /GI
SaYJ Notary Public
oulcer)
who proved to me on the basis of satisfactory evidence to be the person(* whose name( p) is /are subscribed to
the within instrument and acknowledged to me that he/9l executed the same in his/hOA4hei"uthorized
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which the person(10 acted, executed the instrument.
1 certify under PENALTY OF PERJURY under the laws of the State of California that the foregoing paragraph
is true and correct.
OFFICIAL SEAL
WITNESS my hand and offici e81. TOMMIE RICHARDSON
_' r NOTARY PUBLIC•CALIFORNIA
COMM. NO. 2070126
�C SAN DIEGO COUNTY
signature of (Notary S MY COMM. EXP. JUNE 1, 2018
gm Notary Public
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CERTIFICATE OF ACCEPTANCE
(Storm Water Management
Facilities Maintenance Agreement)
This is to certify that the interest in real property located in the City of Poway conveyed by the
Grant of Easement described in Item 4 of the attached document dated: /'C;Z(v- /S ,
from Charlie H. Boghosian to the City of Poway, a political corporation and /or governmental agency, is
hereby accepted by the undersigned officer or agent on behalf of the City Council pursuant to
authority conferred by Resolution No. 34 adopted on January 20, 1981.
Dated: lcgco - I CJ CITY OF POWAY
Seal:
By:
Sheila R. Cobian, CIVIC
ity Clerk
SWMFMA Boghosian Page 5
EXHIBIT "A"
OPERATION AND MAINTENANCE PLAN (O&M PLAN)
Bioretention Facility — General Overall Plan
This project will be utilizing two Bioretention Facilities as the main
Structural BMPs. This section will discuss Preventive and Corrective
Maintenance followed by a Project Specific Operation and Maintenance
Plan (O &M Plan) that includes inspection frequency, maintenance
procedures and indicators. The main operational and maintenance
needs of a Bioretention Facility are as follows:
• Vegetation management to maintain adequate hydraulic functioning
and to limit habitat for disease - carrying animals.
• Animal and vector control.
• Periodic sediment removal to optimize performance.
• Trash, debris, grass trimmings, tree pruning, and leaf collection and
removal to prevent obstruction of the drainage into the top layer of
the "engineered soil ".
• Erosion and structural maintenance to prevent the loss of soil and
maintain the performance of the basin.
Functional Maintenance
Functional maintenance has two components:
Preventive maintenance
Corrective maintenance
Preventive Maintenance
Preventive maintenance activities to be instituted at a Bioretention
Facility are:
Trash and Debris. During each inspection and maintenance visit to
the site, debris and trash removal will be conducted to reduce the
potential for inlet and outlet structures and other components from
becoming clogged and inoperable during storm events. Inspections
will be conducted at least annually. More frequent visual inspections
are recommended especially after runoff producing rainfall events.
• Sediment Removal. Sediment accumulation, as part of the operation
and maintenance program for a Bioretention Basin, will be monitored
once a month during the dry season, after every large storm (0.50
inch), and monthly during the wet season. Specifically, if sediment
reaches a level at or near plant height, or could interfere with flow or
operation, the sediment will be removed. If there is a visible
accumulation of debris or sediment is determined to be the cause of
decline in design performance, prompt action (i.e., within ten working
days) will be taken to restore the Basin to design performance
standards.
• Removal of Standing Water. Standing water must be removed if it
contributes to the development of aquatic plant communities or
mosquito breeding areas, or is present 72 hours after a rain event.
• Fertilization and Irrigation. The vegetation seed mix should be
designed so that extremely minimal fertilization and irrigation is
necessary. Since these basins are within Zone "A" of the Fire Fuel
Management Zone, it is anticipated that some fertilizers and irrigation
will be required. Inspection of irrigation system can be done as part
of normal landscaping maintenance.
• Elimination of Mosquito Breeding Habitats. The most effective
mosquito control program is one that eliminates potential breeding
habitats. Any standing water that is visible after 48 hours should be
eliminated.
Corrective Maintenance
Corrective maintenance is required on an emergency or non - routine
basis to correct problems and to restore the intended operation and safe
function of a Bioretention Facility. Corrective maintenance activities
include:
• Removal of Debris and Sediment. Sediment, debris, and trash,
which impede the proper functioning of the Bioretention Basin and
prevent vegetative growth, will be removed and properly disposed.
• Structural Repairs. Once deemed necessary (if vegetated area fails
or the area remains ponded during dry periods), repairs to structural
components of the bioretention area and its inlet and outlet structures
will be done within 10 working days. This could include replacing the
basin media or a portion thereof.
Embankment and Slope Repairs. Once deemed necessary, damage
to the embankments and slopes of the basins will be repaired within
10 working days.
Erosion Repair. Where a reseeding program has been ineffective, or
where other factors have created erosive conditions (i.e., pedestrian
traffic, concentrated flow, etc.), corrective steps will be taken to
prevent loss of soil and any subsequent danger to the performance of
a basin. There are a number of corrective actions than can be taken.
These include erosion control blankets and riprap for temporary
stabilization. A permanent solution could include energy dissipation
improvements at basin inlets.
Hazardous Waste
Suspected hazardous wastes will be analyzed to determine disposal options.
Hazardous wastes generated onsite will be handled and disposed of according to
applicable local, state, and federal regulations. A solid or liquid waste is
considered a hazardous waste if it exceeds the criteria list in the CCR, Title 22,
Article 11.
Maintenance Category
Bioretention Facility:
The inspection and maintenance of the Bioretention Basin will be the
responsibility of the individual private land owner. The City of Poway should have
only minimal concerns for ongoing maintenance. The proposed Bioretention
Basins will inherently "take care of themselves ", or property owners can naturally
be expected to do so as an incident of taking care of their property.
Responsible Party
The inspection and maintenance of the landscaping will be performed as
necessary by the private land owner. Inspection has been discussed in this plan,
and at a minimum, should occur annually. Records of these inspections are to
be maintained in perpetuity for a period of 5 (five) years, minimum, and shall be
made available to the City upon request. The land owner will be subject to all
applicable ordinances referenced herein. Structural repairs that involve
permanent energy dissipation and /or replacement/amending of the basin media
should be at the direction of a qualified professional.
The maintenance of the Biorelention Basins will be performed as necessary by
the land owner and the construction superintendent and once the development is
complete, the homeowner will assume all financial responsibility for ensuring that
the treatment devices are maintained.
Project Specific Operation and Maintenance Plan (O&M Plan)
The Bioretention Facilities for this project shall be maintained at regular intervals
and after qualifying rain events. The section will dictate what specific
maintenance frequencies and indicators are required to properly execute this
O &M Plan. Unless otherwise specified, the Bioretention Facilities shall be
inspected at least twice a year. One inspection shall be between 30 days and 60
days prior to the start of the rainy season to insure that all necessary
maintenance and repairs can be performed prior to the start of the rainy season.
The second inspections shall be immediately after the end of the rainy season.
The following is a compilation of Routine Actions required for the Bioretention
Facility for this project.
Routine Action: Inspect Height of Vegetation on Basin Invert and Side
Slopes
Maintenance Indicator: Abnormal and /or Invasive Vegetation Present
Field Measurements: Visual Inspection
Inspection Frequency. 1. Once during wet season
2. Once during dry season
Maintenance Activity: Remove Abnormal and /or Invasive Vegetation
Routine Action: Inspect for Standing Water
Maintenance Indicator: Standing water for more than 72 hours
Field Measurements: Visual Inspection
Inspection Frequency: Within 72 hours of a storm event that is 0.75
inches or greater
Maintenance Activity: 1. De -water immediately
2. Remove Sediment
3. Scarify invert and re- grade, if needed
2. Notify engineer immediately if a solution
is not immediately evident
Routine Action: Inspect for Debris Accumulation
Maintenance Indicator:
Field Measurements
Inspection Frequency:
Maintenance Activity:
Debris, trash, or litter present
Visual Inspection
During routine trashing
Remove debris, trash, and litter
Routine Action: Inspect for Sediment Management
Maintenance Indicator: Sediment depth exceeds one -half the height
(5- inches) of the Orifice Catch Basin that
extents 10- inches above the finish surface of
the Bioretention Basin.
Field Measurements: Visual Inspection
Inspection Frequency: Annually
Maintenance Activity: Remove and properly dispose of accumulated
sediment materials
Routine Action: Inspect Catch Basin and Orfiice
Maintenance Indicator: Standing Water (Clogging /Ponding water in
Orifice Catch Basin) for more than 72 hours
Field Measurements: Visual Inspection
Inspection Frequency: Within 72 hours of a storm event that is 0.75
inches or greater
Maintenance Activity: 1. De -water immediately
2. Remove Sediment
3. Clean out catch basin and orifice
3. Notify engineer immediately if a solution
is not immediately evident
Routine Action: Inspect for Burrows In Basin
Maintenance Indicator: Burrows, holes, mounds present
Field Measurements: Visual Inspection
Inspection Frequency: Annual: 30 days prior to the rainy season
Maintenance Activity: Backfill and re- vegetate
ff • of
LOCATION OF BIORETENTION BASIN
ADDRESS & APN
• 18710 HERITAGE DRIVE
POWAY, CA 92064
• APN: 277 - 220 -36
BIORETENTION MAINTENANCE
• PERFORM PREVENTIVE &
CORRECTIVE MAINTENANCE ON
ANNUAL BASIS AND ALSO PRIOR
TO & AFTER STORM EVENTS.
REFER TO THE "O &MPLAN"
EXHIBIT "A" OF THIS DOCUMENT
FOR SPECIFIC DETAILS.
100 50 0 100
SCALE IN FEET
SCALE: 1" = 100'
OPEN SPACE
EA EMENT�
OPEN SPACE
EASEMENT
ENGINEERING & SURVEYING
SINGLE SOURCE DEVELOPMENT CONSULTANT
310 S. TWIN OAKS VALLEY RD., x/107 -297
SAN MARCOS. CA. 92078
(760) 510 -3152 Ph / (760) 510 -3153 Fax
ff . P9
BASIN
1;
veil-......
`Jlellellell�u'u
'•• eilel
BIORETENTION-'
BASIN /
ATTACHMENT "2" TO EXHIBIT "A"
BIORETENTION BASIN SECTION
�FJ c
\R��F
INFLOW PIPE
PER PLAN
"C -4" WALL PER
SEPARATE BLDG.
PERMIT
PER PLAN
SOIL & STORAGE
SECTION PER IMP
DETAIL THIS SHEET
6" MINUS
RIP RAP
Et•
10 "(V1)
4" PERF PIPE W/
ORIFICE ® 30"
A.D. BOX
30" A.D.
12"
6" PVC SOLID
OUTFLOW
j"C -3" WALL
PER SEPARATE
--.BLDG. PERMIT
BIORETENTION BASIN SECTION
NOT TO SCALE
ENGINEERING & SURVEYING
SINGLE SOURCE DEVELOPMENT CONSULTANT
310 S. THAN OAKS VALLEY RD., #107 -297
SAN MARCOS, CA. 92078
(760) 510 -3152 Ph / (760) 510 -3153 Fox
ATTACHMENT "3" TO EXHIBIT "A"
BIORENTION BASIN & STORAGE DETAIL
30" AREA DRAIN BOX
2, W/ GRATED INLET
�(� r12" MIN.
INFLOW PIPE
PER PLAN
(V2) 18" MIN.
" SEE NOTE
BELOW
18" MIN.
ENGINEERED SOIL 2 —3" OF
*SEE NOTE BELOW 3/8" GRAVEL
4" PERFORATED PVC PIPE
W/ PERFORATIONS ® INVERT
ALONG LENGTH OF IMP
DROUGHT RESISTANT
LANDSCAPING.
12" MIN.
SOLID 6"
PVC /ABS DRAIN
PIPE. OUTLET TO
EXIST 12" S.D.
OR RIP —RAP.
ORIFICE ® CONNECTION OF 4"
PERFORATED PIPE TO 30" A.D. BOX.
SEE ORIFICE PLAN VIEW DETAIL
*BIORETENTION "ENGINEERED SOIL" LAYER SHALL BE MINIMUM 18" DEEP "SANDY
LOAM" SOIL MIX WITH NO MORE THAN 59 CLAY CONTENT. THE MIX SHALL
CONTAIN 50 -609 SAND, 20 -30% COMPOST OR HARDWOOD MULCH, AND 20 -309
TOPSOIL, FREE OF STONES, STUMPS, ROOTS, OR SIMILAR OBJECTS, AND ALSO
FREE OF NOXIOUS WEEDS. MIN. PERK RATE = 5 IN. /HR.
* *18" CRUSHED ROCK LAYER, CL. II PERMEABLE ROCK WITH MIN. 40% POROSITY.
BIORETENTION BASIN &
STORAGE DETAIL
NOT TO SCALE
ENGINEERING & SURVEYING
SINGLE SOURCE DEVELOPMENT CONSULTANT
310 S. THAN OAKS VALLEY RD., #107 -297
SAN MARCOS, CA. 92078
(760) 510 -3152 Ph / (760) 510 -3153 Fax
ATTACHMENT 994" TO EXHIBIT "A"
ORIFICE DETAIL
4" PERF. 4
PIPE
30" SO.
A. D.
6" SOLID PVC W/
SCREW ON END CAP
W/ ORIFICE.
ORIFICE DETAIL
NOT TO SCALE
ORIFICE DIAMETERS:
• IMP 1 = 0.25— INCHES
• IMP 2 = 0.60 — INCHES
ENGINEERING & SURVEYING
SINGLE SOURCE DEVELOPMENT CONSULTANT
310 S. TWIN OAKS VALLEY RD., /107 -297
SAN MARCOS, CA. 92076
(760) 510 -3152 Ph / (760) 510 -3153( 760) 510 -3152 Ph / (760) 510 -3153 Fax
m
4" PERF.
IPIPE
6" PVC ® 0.57.
(MIN.) OUTFLOW