Storm Water Facilities Maintenance Agreement 2023-01163405/4/23, 11:31 AM
Batch 15685588 Confirmation
RECORDING REQUESTED BY:
CITY OF POWAY
AND WHEN RECORDED MAIL TO:
CITY CLERK
CITY OF POWAY
P 0 BOX 789
POWAY, CA 92074
APN: 277-202-23
DOC# 2023-0116340
IIIIII IIIII IIIII IIIII IIII IIIIII IIIII IIIII IIIII IIIII IIIII IIIII IIII IIII
May 04, 2023 11:25 AM
OFFICIAL RECORDS
JORDAN Z. MARKS,
SAN DIEGO COUNTY RECORDER
FEES: $0.00 PAR:
Atkins: $0.00)
POOR: N/A
PAGES: 42
(THIS SPACE FOR RECORDER'S USE)
STORM WATER FACILITIES
MAINTENANCE AGREEMENT
Rihan Residence
(M DRA21-025)
The undersigned grantor(s) declares:
Documentary Transfer Tax is $ -0- pursuant to R & T Code 11922 (conveyance to a Government Agency)
This AGREEMENT for the maintenance and repair of certain Storm Water Facilities is entered into
between the Property Owner(s) Husam Rihan and Khloudi Tarabulsi, (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 62 of Parcel Map 13708, in the County of San Diego, State of California,
filed in the office of the County Recorder of San Diego County, December 17, 1998, (hereinafter referred
to as the "PROPERTY"), which is being developed into a single family residence, in accordance with
the application for a Minor Development Review (MDRA 21-025) which is 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 Stormwater Management and Discharge Control
Ordinance, Poway Municipal Code, Chapters 13 and 16 (the "Stormwater 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 Facilities which are identified as "Best Management Practices" or "BMPs":
One (1) biofiltration basin, one (1) biofiltration with partial retention basin, and one (1) permeable
paver area located throughout the site as shown on Exhibit "A".
The precise location(s) and extent of the BMPs are indicated on the approved plans on file with CITY's
Development Services Department as MDRA21-025. The manner and standards by which the BMPs
must be repaired and maintained in order to retain their effectiveness and the approximate location of
the BMPs are as set forth in the Operation and Maintenance Plan (hereinafter "O&M PLAN"), which is
attached hereto and incorporated herein as Exhibit "B".
Because additional impervious area may require the addition of or alteration of storm water facilities
and strategies, no impervious area may be added to the project site without prior approval from the City
https://gs.secure-recording.com/Batch/Confirmation/15685588 1/2
RECORDING REQUESTED BY:
CITY OF POWAY
AND WHEN RECORDED MAIL TO:
CITY CLERK
CITY OF POWAY
P O BOX 789
POWAY, CA 92074
APN: 277-202-23
(THIS SPACE FOR RECORDER'S USE)
STORM WATER FACILITIES
MAINTENANCE AGREEMENT
Rihan Residence
(M DRA21-025)
The undersigned grantor(s) declares:
Documentary Transfer Tax is $ -0- pursuant to R & T Code 11922 (conveyance to a Government Agency)
This AGREEMENT for the maintenance and repair of certain Storm Water Facilities is entered into
between the Property Owner(s) Husam Rihan and Khloudi Tarabulsi, (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 62 of Parcel Map 13708, in the County of San Diego, State of California,
filed in the office of the County Recorder of San Diego County, December 17, 1998, (hereinafter referred
to as the "PROPERTY"), which is being developed into a single family residence, in accordance with
the application for a Minor Development Review (MDRA 21-025) which is 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 Stormwater Management and Discharge Control
Ordinance, Poway Municipal Code, Chapters 13 and 16 (the "Stormwater 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 Facilities which are identified as "Best Management Practices" or "BMPs":
One (1) biofiltration basin, one (1) biofiltration with partial retention basin, and one (1) permeable
paver area located throughout the site as shown on Exhibit "A".
The precise location(s) and extent of the BMPs are indicated on the approved plans on file with CITY's
Development Services Department as MDRA21-025. The manner and standards by which the BMPs
must be repaired and maintained in order to retain their effectiveness and the approximate location of
the BMPs are as set forth in the Operation and Maintenance Plan (hereinafter "O&M PLAN"), which is
attached hereto and incorporated herein as Exhibit "B".
Because additional impervious area may require the addition of or alteration of storm water facilities
and strategies, no impervious area may be added to the project site without prior approval from the City
Engineer. Additional impervious area includes, but is not limited to, patio covers, hardscape
improvements, and building additions.
WHEREAS, OWNER's representations that the BMPs 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 BMPs 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:
Incorporation of Recitals. The recitals set forth above are incorporated herein by this reference
and constitute a part of this AGREEMENT
2. Maintenance of Storm Water 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 Stormwater 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.
3. 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.
4. 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,
SWFMA (MDRA21-025) Page 2
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
property or properties of the responsible parties pursuant to the procedures set forth in Poway
Municipal Code Chapter 8.72.
5. Grant of Easement to CITY. OWNER hereby grants to CITY a perpetual easement over, under
and across those portions of PROPERTY described in Exhibit "C" and shown in Exhibit "D", 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 upon reasonable 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.
6. 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
7. 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 (specifically including but not limited to OWNER's alleged
noncompliance with the Stormwater Ordinance), 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.
8. Allocation of Costs. Following the sale or transfer of any 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.
SWFMA (MDRA21-025) Page 3
9. 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.
10. 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.
11. 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.
12. 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.
13. Attorney's Fees. The prevailing party in any action or proceeding to enforce or interpret the
terms of this Agreement shall be entitled to recover all of its reasonable litigation expenses,
including its expert fees, attorneys' fees, courts costs, arbitration costs, and any other fees.
IN WITNESS WHEREOF, the parties have executed this Agreement on the dates set forth hereinafter.
OWNERS: Husam Rihan and Khloudi Tarabulsi
c 7,
By:
Husam Rihan
By:
loudi Tarabulsi
Date:
Date:
(signatures must be notarized)
SWFMA (MDRA21-025) Page 4
CALIFORNIA ALL-PURPOSE ACKNOWLEDGMENT
CIVIL CODE § 1189
A notary public or other officer completing this certificate verifies only the identity of the individual who signed the
document to which this certificate is attached, and not the truthfulness, accuracy, or validity of that document.
State of California
County of San Diego )
On April 28, 2022 before me, Yvonne Mannion, Notary Public
Date Here Insert Name and Title of the Officer
personally appeared Husam Rihan and Khloudi Tarabulsi
Name(s) of Signer(s)
who proved to me on the basis of satisfactory evidence to be the person(s) whose name(s) is/are
subscribed to the within instrument and acknowledged to me that he/she/they executed the same in
his/her/their authorized capacity(ies), and that by his/her/their signature(s) on the instrument the
person(s), or the entity upon behalf of which the person(s) acted, executed the instrument.
,y YVONNE MANNION
=
Notary Public - California
r,
s
San Diego County >
•
My
Commission M 2363699
Comm. Expires Jul 1, 2025
I certify under PENALTY OF PERJURY under the laws
of the State of California that the foregoing paragraph
is true and correct.
WITNESS my hand and official seal.
Signature i,� L i' . cell /I;�--�
Signature of Notary Public
Place Notary Seal Above
OPTIONAL
Though this section is optional, completing this information can deter alteration of the document or
fraudulent reattachment of this form to an unintended document.
Description of Attached Document
Title or Type of Document: Storm Water Facilities Maintenance Agreement MDRA21-025
Document Date: Number of Pages:
Signer(s) Other Than Named Above:
Capacity(ies) Claimed by Signer(s)
Signer's Name:
❑ Corporate Officer — Title(s):
❑ Partner — ❑ Limited ❑ General
❑ Individual ❑ Attorney in Fact
❑ Trustee ❑ Guardian or Conservator
rl Other:
Signer Is Representing:
Signer's Name:
❑ Corporate Officer — Title(s):
❑ Partner — ❑ Limited ❑ General
❑ Individual ❑ Attorney in Fact
❑ Trustee ❑ Guardian or Conservator
❑ Other:
Signer Is Representing:
02016 National Notary Association - www.NationalNotary.org - 1-800-US NOTARY (1-800-876-6827) Item #5907
CITY OF OWAY:
� ja� I J�f
Robert J. Manis
Director of Development Serviis-/
APPROVED AS TO FORM:
Office of the City Attorney
Alan Fenstermacher
City Attorney
Date: 517-a-
(signature must be notarized)
Attachments
1. Certificate of Acceptance
2. Exhibit A — BMP Site Plan
3. Exhibit B — Operation and Maintenance Plan
4. Exhibit C — Easement Legal Description
5. Exhibit D — Easement Plat
APPROVED AS TO CONTENT:
Engineering Div' 'on
Melody Road, P.E.
City Engineer
SWFMA (MDRA21-025) Page 5
CALIFORNIA• •WLEDGMENT CIVIL CODE § 1189
A notary public or other officer completing this certificate verifies only the identity of the individual who signed the
document to which this certificate is attached, and not the truthfulness, accuracy, or validity of that document.
State of California )
County of San Diego )
On May 4, 2022
Date
personally appeared
before me, Yvonne Mannion, Notary Public
Here Insert Name and Title of the Officer
Robert J. Manis
Name(s) of Signer(s)
who proved to me on the basis of satisfactory evidence to be the person(s) whose name(s) is/are
subscribed to the within instrument and acknowledged to me that he/she/they executed the same in
his/her/their authorized capacity(ies), and that by his/her/their signature(s) on the instrument the
person(s), or the entity upon behalf of which the person(s) acted, executed the instrument.
*my
YVONNE MANNION
Notary Public - California
San Diego CountyCommission H 2363699
Comm. Expires Jul 1, 2025
I certify under PENALTY OF PERJURY under the laws
of the State of California that the foregoing paragraph
is true and correct.
WITNESS my hand and official seal.
i
Signature
( % Signature of Notary Public
Place Notary Seal Above
OPTIONAL
Though this section is optional, completing this information can deter alteration of the document or
fraudulent reattachment of this form to an unintended document.
Description of Attached Document
Title or Type of Document: Storm Water Facilities Maintenance
Document Date:
Signer(s) Other Than Named Above:
Capacity(ies) Claimed by Signer(s)
Signer's Name:
❑ Corporate Officer — Title(s):
❑ Partner — ❑ Limited ❑ General
❑ Individual ❑ Attorney in Fact
❑ Trustee ❑ Guardian or Conservator
n Other:
Signer Is Representing:
reement MDRA21-025
Number of Pages:
Signer's Name:
❑ Corporate Officer — Title(s):
❑ Partner — ❑ Limited ❑ General
❑ Individual ❑ Attorney in Fact
❑ Trustee ❑ Guardian or Conservator
I-1 Other:
Signer Is Representing:
02016 National Notary Association • www. National Notary, org • 1-800-US NOTARY (1-800-876-6827) Item #5907
CERTIFICATE OF ACCEPTANCE
(Storm Water 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 5 of the attached document dated AarI 28 2zoa from
Husam Rihan and Khloudi Tarabulsi, 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. 17-007 adopted on April 18, 2017.
Dated: Z 2 Z CITY OF POWAY
Seal:
SWFMA (MDRA21-025)
By:
R bert J. Mani
Department of Development rvices
EXH I BIT 'A'
STRUCTURAL BMP SITE PLAN
SITE PLAN
14150 BRYCE POINT
BF-1-1: BIOFILTRATION, A=957 S.F.
PR-1-1: PARTIAL RETENTION BY BIOFILTRATION, A=516 S.F.
INF-3-1: RETENTION BY PERMEABLE PAVEMENT, A=1,227 S.F.
EXHIBIT'B'
STORM WATER AGREEMENT
STRUCTURAL BMP OPERATION & MAINTENANCE
4150 BRYCE POINT
BF-1
Biofiltration
BMP MAINTENANCE FACT SHEET
FOR
STRUCTURAL BMP BF-1 BIOFILTRATION
Biofiltration facilities are vegetated surface water systems that filter water through vegetation, and soil or
engineered media prior to discharge via underdrain or overflow to the downstream conveyance system.
Biofiltration facilities have limited or no infiltration. They are typically designed to provide enough hydraulic head
to move flows through the underdrain connection to the storm drain system. Typical biofiltration components
include:
• Inflow distribution mechanisms (e.g., perimeter flow spreader or filter strips)
• Energy dissipation mechanism for concentrated inflows (e.g., splash blocks or riprap)
• Shallow surface ponding for captured flows
• Side slope and basin bottom vegetation selected based on climate and ponding depth
• Non -floating mulch layer
• Media layer (planting mix or engineered media) capable of supporting vegetation growth
• Filter course layer consisting of aggregate to prevent the migration of fines into uncompacted native soils
or the aggregate storage layer
• Aggregate storage layer with underdrain(s)
• Impermeable liner or uncompacted native soils at the bottom of the facility
• Overflow structure
Normal Expected Maintenance
Biofiltration requires routine maintenance to: remove accumulated materials such as sediment, trash or debris;
maintain vegetation health; maintain infiltration capacity of the media layer; replenish mulch; and maintain
integrity of side slopes, inlets, energy dissipators, and outlets. A summary table of standard inspection and
maintenance indicators is provided within this Fact Sheet.
Non -Standard Maintenance or BMP Failure
If any of the following scenarios are observed, the BMP is not performing as intended to protect downstream
waterways from pollution and/or erosion. Corrective maintenance, increased inspection and maintenance, BMP
replacement, or a different BMP type will be required.
The BMP is not drained between storm events. Surface ponding longer than approximately 24 hours
following a storm event may be detrimental to vegetation health, and surface ponding longer than
approximately 96 hours following a storm event poses a risk of vector (mosquito) breeding. Poor drainage
can result from clogging of the media layer, filter course, aggregate storage layer, underdrain, or outlet
structure. The specific cause of the drainage issue must be determined and corrected.
Sediment, trash, or debris accumulation greater than 25% of the surface ponding volume within one
month. This means the load from the tributary drainage area is too high, reducing BMP function or
clogging the BMP. This would require pretreatment measures within the tributary area draining to the
BMP to intercept the materials. Pretreatment components, especially for sediment, will extend the life of
components that are more expensive to replace such as media, filter course, and aggregate layers.
Erosion due to concentrated storm water runoff flow that is not readily corrected by adding erosion
control blankets, adding stone at flow entry points, or minor re -grading to restore proper drainage
according to the original plan. If the issue is not corrected by restoring the BMP to the original plan and
grade, the [City Engineer] shall be contacted prior to any additional repairs or reconstruction.
BF-1 Page 1 of 11
January 12, 2017
BF-1
Biofiltration
Other Special Considerations
Biofiltration is a vegetated structural BMP. Vegetated structural BMPs that are constructed in the vicinity of, or
connected to, an existing jurisdictional water or wetland could inadvertently result in creation of expanded waters
or wetlands. As such, vegetated structural BMPs have the potential to come under the jurisdiction of the United
States Army Corps of Engineers, SDRWQCB, California Department of Fish and Wildlife, or the United States Fish
and Wildlife Service. This could result in the need for specific resource agency permits and costly mitigation to
perform maintenance of the structural BMP. Along with proper placement of a structural BMP, routine
maintenance is key to preventing this scenario.
BF-1 Page 2 of 11
January 12, 2017
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PR-1
Biofiltration with Partial Retention
BMP MAINTENANCE FACT SHEET
FOR
STRUCTURAL BMP PR-1 BIOFILTRATION WITH PARTIAL RETENTION
Biofiltration with partial retention facilities are vegetated surface water systems that filter water through
vegetation and soil or engineered media prior to infiltrating into native soils, discharge via underdrain, or overflow
to the downstream conveyance system. These BMPs have an elevated underdrain discharge point that creates
storage capacity in the aggregate storage layer. Typical biofiltration with partial retention components include:
• Inflow distribution mechanisms (e.g., perimeter flow spreader or filter strips)
• Energy dissipation mechanism for concentrated inflows (e.g., splash blocks or riprap)
• Shallow surface ponding for captured flows
• Side slope and basin bottom vegetation selected based on climate and ponding depth
• Non -floating mulch layer
• Media layer (planting mix or engineered media) capable of supporting vegetation growth
• Filter course layer consisting of aggregate to prevent the migration of fines into uncompacted native soils
or the aggregate storage layer
• Aggregate storage layer with underdrain(s)
• Uncompacted native soils at the bottom of the facility
• Overflow structure
Normal Expected Maintenance
Biofiltration with partial retention requires routine maintenance to: remove accumulated materials such as
sediment, trash or debris; maintain vegetation health; maintain infiltration capacity of the media layer; replenish
mulch; and maintain integrity of side slopes, inlets, energy dissipators, and outlets. A summary table of standard
inspection and maintenance indicators is provided within this Fact Sheet.
Non -Standard Maintenance or BMP Failure
If any of the following scenarios are observed, the BMP is not performing as intended to protect downstream
waterways from pollution and/or erosion. Corrective maintenance, increased inspection and maintenance, BMP
replacement, or a different BMP type will be required.
The BMP is not drained between storm events. Surface ponding longer than approximately 24 hours
following a storm event may be detrimental to vegetation health, and surface ponding longer than
approximately 96 hours following a storm event poses a risk of vector (mosquito) breeding. Poor drainage
can result from clogging of the media layer, filter course, aggregate storage layer, underdrain, or outlet
structure. The specific cause of the drainage issue must be determined and corrected.
Sediment, trash, or debris accumulation greater than 25% of the surface ponding volume within one
month. This means the load from the tributary drainage area is too high, reducing BMP function or
clogging the BMP. This would require pretreatment measures within the tributary area draining to the
BMP to intercept the materials. Pretreatment components, especially for sediment, will extend the life of
components that are more expensive to replace such as media, filter course, and aggregate layers.
PR-1 Page 1 of 11
January 12, 2017
PR-1
Biofiltration with Partial Retention
• Erosion due to concentrated storm water runoff flow that is not readily corrected by adding erosion
control blankets, adding stone at flow entry points, or minor re -grading to restore proper drainage
according to the original plan. If the issue is not corrected by restoring the BMP to the original plan and
grade, the [City Engineer] shall be contacted prior to any additional repairs or reconstruction.
Other Special Considerations
Biofiltration with partial retention is a vegetated structural BMP. Vegetated structural BMPs that are constructed
in the vicinity of, or connected to, an existing jurisdictional water or wetland could inadvertently result in creation
of expanded waters or wetlands. As such, vegetated structural BMPs have the potential to come under the
jurisdiction of the United States Army Corps of Engineers, SDRWQCB, California Department of Fish and Wildlife, or
the United States Fish and Wildlife Service. This could result in the need for specific resource agency permits and
costly mitigation to perform maintenance of the structural BMP. Along with proper placement of a structural BMP,
routine maintenance is key to preventing this scenario.
PR-1 Page 2 of 11
January 12, 2017
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INF-3
Permeable Pavement as Structural BMP
BMP MAINTENANCE FACT SHEET
FOR
STRUCTURAL BMP INF-3 PERMEABLE PAVEMENT AS STRUCTURAL BMP
Permeable pavement is pavement that allows for percolation through void spaces in the pavement surface into
subsurface layers. The subsurface layers are designed to provide storage of storm water runoff so that outflows,
primarily via infiltration into subgrade soils or release to the downstream conveyance system, can be at controlled
rates. Permeable pavement as structural BMP usually receives runoff from a larger tributary area than permeable
pavement as site design BMP (see SD-613 for permeable pavement as site design BMP). Pollutant control is
provided via infiltration (retention). Flow control is provided by infiltration and/or an outlet control structure.
Typical permeable pavement components include:
• Permeable surface layer
• Bedding layer for permeable surface
• Aggregate storage layer with optional underdrain(s)
• Optional final filter course layer over uncompacted existing subgrade
• Uncompacted native soils at the bottom of the facility
• Optional subsurface check dams at regular intervals when pavement is sloped (more closely spaced on
steeper slopes)
• Optional outflow control structure for runoff released via underdrain(s)
Normal Expected Maintenance
Routine maintenance of permeable pavement includes: removal of materials such as trash and debris accumulated
on the paving surface; vacuuming of the paving surface to prevent clogging; and flushing paving and subsurface
gravel to remove fine sediment. If the BMP includes underdrains and/or an outflow control structure, check and
clear these features. A summary table of standard inspection and maintenance indicators is provided within this
Fact Sheet.
Non -Standard Maintenance or BMP Failure
If the permeable pavement area is not drained between storm events, or if runoff sheet flows across the
permeable pavement area and flows off the permeable pavement area during storm events, the BMP is not
performing as intended to protect downstream waterways from pollution and/or erosion. During storm events up
to the 85th percentile storm event (approximately 0.5 to 1 inch of rainfall in San Diego County), runoff should not
flow off the permeable pavement area. The permeable pavement area is expected to have adequate hydraulic
conductivity and storage such that rainfall landing on the permeable pavement and runoff from the surrounding
drainage area will go directly into the pavement without ponding or overflow (in properly designed systems, the
surrounding drainage area is not more than half as large as the permeable pavement area). Following the storm
event, there should be no standing water (puddles) on the permeable pavement area.
If storm water is flowing off the permeable pavement during a storm event, or if there is standing water on the
permeable pavement surface following a storm event, this is an indicator of clogging somewhere within the
system. Poor drainage can result from clogging of the permeable surface layer, any of the subsurface components,
or the subgrade soils. The specific cause of the drainage issue must be determined and corrected. Surface or
subsurface ponding longer than approximately 96 hours following a storm event poses a risk of vector (mosquito)
breeding. Corrective maintenance, increased inspection and maintenance, BMP replacement, or a different BMP
type will be required. If poor drainage persists after flushing of the paving, subsurface gravel, and/or underdrain(s)
when applicable, or if it is determined that the underlying soils do not have the infiltration capacity expected, the
[City Engineer] shall be contacted prior to any additional repairs or reconstruction.
INF-3 Page 1 of 8
January 12, 2017
INF-3
Permeable Pavement as Structural BMP
Other Special Considerations
The runoff storage and infiltration surface area in this BMP are not readily accessible because they are subsurface.
This means that clogging and poor drainage are not easily corrected. If the tributary area draining to the BMP
includes unpaved areas, the sediment load from the tributary drainage area can be too high, reducing BMP
function or clogging the BMP. All unpaved areas within the tributary drainage area should be stabilized with
vegetation. Other pretreatment components to prevent transport of sediment to the paving surface, such as grass
buffer strips, will extend the life of the subsurface components and infiltration surface. Along with proper
stabilization measures and pretreatment within the tributary area, routine maintenance, including preventive
vacuum/regenerative air street sweeping, is key to preventing clogging.
INF-3 Page 2 of 8
January 12, 2017
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LEGAL DESCRIPTION
EXHIBIT "C"
EASEMENTS FOR DRAINAGE, ACCESS AND MAINTENANCE OVER LOT 62, MAP No.13708 IN
THE CITY OF POWAY, COUNTY OF SAN DIEGO, STATE OF CALIFORNIA, MORE FULLY
DESCRIBED AS FOLLOWS:
EASEMENT "A"
BEGINNING AT THE MOST NORTHERLY CORNER OF SAID LOT 62, THENCE ALONG THE
NORTHWESTERLY LINE THEREOF SOUTH 55044'07" WEST, A DISTANCE OF 30.00 FEET; THENCE
ALONG THE NORTHERLY LINE OF SAID LOT 62 NORTH 90000'00" WEST, A DISTANCE OF 172.60
FEET; THENCE LEAVING SAID NORTHERLY LINE SOUTH 2099'01" EAST, A DISTANCE OF 43.33
FEET; THENCE NORTH 90°00'00" EAST, A DISTANCE OF 42.57 FEET; THENCE NORTH 00000'00" EAST,
A DISTANCE OF 35.55 FEET; THENCE NORTH 90°00'00" EAST, A DISTANCE OF 116.29 FEET; THENCE
NORTH 55044'07" EAST, A DISTANCE OF 31.78 FEET TO A POINT ON THE NORTHEASTERLY LINE OF
SAID LOT 62, BEING A POINT ON A CURVE, CONCAVE NORTHEASTERLY HAVING A RADIUS OF
54.00 FEET; A RADIAL BEARS TO SAID POINT SOUTH 50°25'21" WEST; THENCE NORTHWESTERLY
ALONG THE ARC OF SAID CURVE THROUGH A CENTRAL ANGLE OF 5018'46" AN ARC DISTANCE
OF 5.01 FEET TO THE POINT OF BEGINNING.
EASEMENT "B"
BEGINNING AT THE NORTHEASTERLY CORNER OF SAID LOT 62; THENCE ALONG THE EASTERLY
LINE OF SAID LOT SOUTH 00"34'43" WEST, A DISTANCE OF 172.70 FEET; THENCE LEAVING SAID
EASTERLY LINE NORTH 89025'17" WEST, A DISTANCE OF 22.00 FEET; THENCE NORTH 00°34'43" EAST,
A DISTANCE OF 90.50 FEET; THENCE SOUTH 89°25'17" EAST, A DISTANCE OF 17.00 FEET; THENCE
NORTH 00034'43" EAST, A DISTANCE OF 82.43 FEET TO A POINT ON THE NORTHEASTERLY LINE OF
SAID LOT 62, BEING A POINT ON A CURVE CONCAVE NORTHERLY HAVING A RADIUS OF 54.00 FEET;
A RADIAL BEARS TO SAID POINT SOUTH 5053'29" WEST; THENCE SOUTHEASTERLY ALONG THE ARC
OF SAID CURVE THROUGH A CENTRAL ANGLE OF 5018'46" AN ARC DISTANCE OF 5.01 FEET TO THE
POINT OF BEGINNING.
#11,912 02,9
LAND S
Du,s,
G� c c
O
No. LS 5112
Exp. 6/30/23
�I L I OF Raj
EXHIBIT "D"
PLAT OF DRAINAGE EASEMENT LOCATION
OVER LOT 62, MAP 13708, CITY OF POWAY,
COUNTY OF SAN DIEGO, STATE OF CALIFORNIA
DATA TABLE
® A=5'18'46",R=54.00',L=5.01'
(R) indicates radial bearing
LOT 3
MAP13708 N 55'44'07" E, (R)
30.00,,
N 90'00'00" E, 240.14'
172.60'
u'--------� tk
N �``' N 90'00'00" E 1 16 29' ' �` '
BRYCE POINT
0=55'09'24"
R=54.00'
L=51.98'-,
'wo 0Lq 00
M W
o
N 90'00'00" E Z
42.57' DRAINAGE, ACCESS AND t
MAINTENANCE EASEMENT "A" MI
S 89'25' 17" E o
17.00' J
OF
Lq
l
LOT 62, MAP 13708 CD
w
M
M
O
O
DRAINAGE, ACCESS AND Z
MAINTENANCE EASEMENT "B"L
N 89 25 17., W7
22.00' o
Sep � 115/2022
a F. Dreasel �h `
�O
J ' �
No. LS 5112
* Exp. 6/30/23 * DRESSELHAUS SURVEYING
SCALE: 1 "=40 FEET 31034 VALLEY CENTER ROAD
c44 1 FORN\P VALLEY CENTER, CA 92082
760-212-0197
0 20 40 80 email:donalddresselhous®att.net
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