2017-264496 DOC# 2017-0264496
111111 11111 11111 11111 1111 111111 11111 11111 11111 11111 11111 11111 lilt 1111
Recording Requested By: Jun 13, 2017 03:11 PM
City Engineer OFFICIAL RECORDS
Ernest J. Dronenburg, Jr.,
SAN DIEGO COUNTY RECORDER
When Recorded Mail To: FEES $99.00
City Clerk
City of Encinitas PAGES zs
505 South Vulcan Avenue
Encinitas, CA 92024
^,A THIS SPACE ABOVE FOR RECORDER'S USE
AGREEMENT FOR MAINTENANCE OF PRIVATE STORMWATER TREATMENT AND
STORMWATER POLLUTION CONTROL FACILITIES BY HOMEOWNER
APN: 264-590-01,/through 264-590-18� Planning Case #: 89-031TMl15-251 DR
264-591-01 through 264-590-10 Grading Plan: 6857-G
THIS AGREEMENT FOR MAINTENANCE OF PRIVATE STORMWATER
TREATMENT AND STORMWATER POLLUTION CONTROL FACILITIES BY
HOMEOWNER ("Agreement") is between the City of Encinitas, a municipal
corporation, ("City"), and Shea Homes Limited Partnership, a California limited
partnership, its heirs, successors, and assigns ("Developer').
WHEREAS, Developer is the owner of that certain real property ("Property"),
that is described in Exhibit "A" which is attached hereto and made a part hereof, and
consists of twenty-eight (28) residential lots (collectively, "Lots" and individually, "Lot").
WHEREAS, this Agreement is for the periodic Maintenance by each buyer of a
Lot in the Property (collectively, "Owners" and individually, "Owner") of certain private
stormwater treatment and pollution control facilities (collectively, "Stormwater
Facilities") located on each Lot, which include, but are not limited to, Best Management
Practices (BMPs), Hydromodification Management Plan (HMP) Facilities, Integrated
Management Practices (IMPs) and Low Impact Development (LID) features. The
description and plat of Stormwater Facilities located on each Lot is set forth in Exhibit
"B" which is attached hereto and made a part hereof.
WHEREAS, this Agreement is required by the City as a condition of approval of
a City permit pursuant to City of Encinitas Municipal Code Chapter 20.08 and Chapter
23.24 as well as the City of Encinitas Stormwater Manual; and
WHEREAS, the Stormwater Facilities benefit said the Lots and will be and are
used by the Owners; and
SMRH.474540864.3 '1'
WHEREAS, each Lot benefits and uses the Stormwater Facilities, which are
shown in Exhibit "B"; and
WHEREAS, it is the desire of the City and the responsibility of each Owner that
Maintenance of said Stormwater Facilities occur on a regular and periodic basis as
necessary to preserve the Storm Water Facilities in good-working order in accordance
with the minimum Maintenance requirements set forth in Exhibit "C" which is attached
hereto and made a part hereof and in accordance with the City of Encinitas Municipal
Code, the Encinitas Stormwater Manual, and other related City policies and
requirements; and
WHEREAS, it is the intention of Developer, each Owner and the City that this
Agreement constitutes a covenant running with the land, binding upon each successive
owner of all or any portion of the Property into perpetuity.
NOW THEREFORE, IT IS HEREBY AGREED FOR VALUABLE
CONSIDERATION AS FOLLOWS:
1) This Agreement establishes each Owner's maintenance requirements for the
Stormwater Facilities located on his or her Lot. The term "Maintenance" wherever
capitalized in this Agreement shall include, but shall not be limited to: inspection
for purposes of identifying operational deficiencies in the Stormwater Facilities,
routine upkeep and repair of the Stormwater Facilities in proper working order as
determined by the City, and preparation and submittal of the annual inspection
report to the City, all as set forth in subparagraph 1.i) through 1.iii).
i) Each Owner shall inspect the Stormwater Facilities after all major storms. In
addition, each Owner shall inspect the Stormwater Facilities at the minimum
frequency specified in Exhibit "C", but not less than twice per year.
ii) Each Owner shall provide upkeep and repair to preserve the Stormwater
Facilities in good working order and shall repair all deficiencies identified in
each Owner's inspections no later than 30 days following the inspection or
prior to the next anticipated rain event. Interim water quality control measures
shall be utilized to protect damaged or deficient Stormwater Facilities during
any storm event until such time as the Facilities are restored to good working
order. The minimum upkeep and repair frequency shall be consistent with
the Exhibit "C" but not less than once per year. To the satisfaction of the
Director of Engineering Services, each Owner shall ensure that the
Stormwater Facilities are in proper working order for the rainy season, which
starts on October 1.
iii) Each Owner shall obtain the City of Encinitas Stormwater Inspection Report
form from the City website or the City of Encinitas Civic Center, complete the
inspection report form, and submit the inspection report to the City of
Encinitas Department of Engineering Services. Prior to the submittal of the
inspection report to the City, each Owner shall perform an inspection of the
SMRH.474540864.3 -2-
Stormwater Facilities, identify deficiencies, and repair and correct all
deficiencies. The inspection report shall be submitted to the City once a year
between August 1 and September 30.
2) Each Lot is benefited by this Agreement, and it is the purpose of the signatories
hereto that this instrument be recorded to the end and intent that the obligation
hereby created shall be and constitute a covenant running with the land. Any
heirs, executors, administrators, assignees, and/or successors in interest to all or
any portion of the Property, by acceptance of delivery of a deed and/or
conveyance regardless of form, shall be deemed to have consented to and
become expressly bound by these presents, including without limitation, the right
of any person entitled to enforce the terms of this Agreement to institute legal
action as provided in Paragraph 13 hereof, such remedy to be cumulative and in
addition to other remedies provided in this Agreement and to all other remedies at
law or in equity.
3) The Stormwater Facilities shall be constructed by Developer and have
Maintenance performed by each Owner in accordance with the terms and
conditions of this Agreement and the plans and specifications identified in
approved Grading Plan Number 6857-G which is on file as a permanent public
record in the City of Encinitas.
4) The cost and expense of Maintenance of the Stormwater Facilities shall be paid by
each Owner.
5) In the event the Property is subdivided in the future, the owners, heirs, assigns,
and successors in interest of each such newly created parcel(s) shall be liable
under this Agreement for their then pro rata share of expenses reflecting such
newly created parcels.
6) The Maintenance to be performed under this Agreement shall include upkeep,
repair, and improvements to adequately ensure the Stormwater Facilities are in
proper working order as determined by the City. Upkeep, repair, and
improvements under this Agreement shall include, but are not limited to, repairing,
preserving, and providing improvement for the upkeep of drainage structures;
removing debris, sediment, oil, grease, and other pollutants as determined by the
City; perpetually preserving adequate groundcover and/or other erosion control
measures within the Property in order to prevent erosion; and the management of
materials, pollutants, and hazardous waste to prevent pollution of the stormwater
system or Municipal Separate Stormwater Sewer System (MS4) as referenced in
local and State codes. Upkeep, repair, and improvement shall also include other
work necessary to repair and preserve the Stormwater Facilities for their intended
purposes as well as the restoration of the Stormwater Facilities following any non-
permitted modification. The restoration shall be as required to restore the
Stormwater Facilities to the condition existing prior to damage or alteration.
SMRH:474540864.3 -3-
7) Any liability of an Owner for personal injury to any worker employed to provide
Maintenance on his or her Lot under this Agreement, or to third persons, as well
as any liability of an Owner for damage to the property of any third persons, as a
result of or arising out of Maintenance under this Agreement, shall be borne by
such Owner.
8) Each Owner shall jointly and severally defend, indemnify, and hold harmless the
City, City's engineer, its consultants, and each of its officials, directors, officers,
agents, and employees from and against all liability, claims, damages, losses,
expenses, personal injury, and other costs, including costs of defense and
attorney's fees, to any contractor, any subcontractor, any user of the Stormwater
Facilities, or to any other third persons arising out of or in any way related to the
use, Maintenance of the Stormwater Facilities on his or her Lot, or the failure to
provide Maintenance for the Stormwater Facilities on his or her Lot. This
Agreement imposes no liability of any kind whatsoever on the City and each
Owner agrees to hold the City harmless from any liability in the event the
Stormwater Facilities located on his or her Lot fail to operate properly.
9) Nothing in this Agreement, the specifications, other contract documents, the City's
approval of the plans and specifications, or the City's inspection of the work
constitutes an acknowledgement of any City responsibility for any such item or the
material contained therein, and the City, City's engineer, its consultants, and each
of its officials, directors, officers, employees and agents, shall have no
responsibility or liability therefore.
10) Each Owner shall provide access to the Stormwater Facilities located within his or
her Lot to City's inspectors, employees, agents, and contractors and/or the
homeowner association property manager within 48 hours of receipt of a written
notification by the City. The access shall be provided unconditionally and without
any obstruction, interference, or hazard. Any animals kept on the Property shall
be secured outside of the area subject to the City's inspection.
11) Each Owner hereby grants permission to the City, its authorized agents, and its
employees, and the homeowner association property manager to enter upon the
Property and to inspect the Stormwater Facilities following a 48 hour notice from
the City whenever the City deems necessary. The purpose of inspection is to
evaluate the condition and performance of the Stormwater Facilities, to follow-up
on reported deficiencies, to respond to citizen complaints, and/or to comply with
State and City requirements for City inspection of such facilities. The City shall
provide the Owner with copies of the inspection findings and a directive to
commence with any repairs deemed necessary.
12) In the event that an Owner fails to maintain the Stormwater Facilities located within
his or her Lot in good working condition in accordance with the Maintenance
requirements as determined by the City Engineer, the City shall have the right, but
not the obligation, to perform the necessary Maintenance. If the City elects to
perform such maintenance on behalf of an Owner of a Lot, the City shall give
SMRH:474540864.3 -4-
written notice to such Owner setting forth with particularity the Maintenance
requirements which the City finds are not being performed by such Owner and
requesting the same be completed by the Owner within a period of thirty (30) days
from the giving of such notice. In the event that the Owner fails to carry out such
maintenance of the Stormwater Facilities within the period specified by the City's
notice, the City shall be entitled, but not obligated, to cause such work to be
completed and shall be entitled to reimbursement with respect thereto from the
Owner as provided herein.
13) In the event the City has performed the necessary Maintenance of the Stormwater
Facilities as provided in Paragraph 12 of this Agreement, the City shall submit a
written invoice to such Owner for all out-of-pocket costs reasonably incurred by the
City to perform such Maintenance on the Owner's Lot. Said invoice shall be due
and payable by the Owner within thirty (30) days of receipt by the Owner. If the
Owner fails to pay such invoice in full within the period specified, City may pursue
collection from the Owner by means of any remedies available at law or in equity.
Without limiting the generality of the foregoing, such invoice shall constitute a
charge on the Property and shall be a continuing lien upon such Property. Owner
hereby vests the City with the right and power to impose a lien upon the Property
and to bring all legal actions and/or to pursue lien foreclosure procedures against
the Property for purposes of collecting payment for such invoice. It is expressly
understood and agreed that the City is under no obligation to maintain or repair
said Stormwater Facilities, and in no event shall this Agreement be construed to
impose any such obligation on the City.
14) The terms of this Agreement may be amended in writing by the City and each
Owner upon prior written approval by the City Engineer.
15) This Agreement shall be governed by the laws of the State of California. 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.
SMRH:474540864.3 -5-
IN WITNESS HEREOF, the parties have executed this Agreement.
OWNER:
SHEA HOMES LIMITED PARTNERSHIP, a California
limited paAwr5hiip
By: /
Na e: .4 . is. -��c- V ��
Title: -+ or1ieA Ay-e4 Date
Name:'e�jsxs thin
Title:��„a: c Date
Signature of OWNER must be notarized. Attach the appropriate acknowledgement.
CITY F ENCI ITAS.
1 Z l �
JL22
#lner,m J. Z Date
Depu ngineer
SMRH:474540864.3 -6-
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 3ar» 0 )
On Jane- 9 0?0� � before me, e' ell ga a 04e , a Notary Public,
personally appeared Vance cnd /�Pnn� ed to me on the basis of
satisfactory evidence to be the person(g) whose name( +e/are subscribed to the within
instrument and acknowledged to me that heFs4e/they executed the same in hisµier/their
authorized capacity(ies�, and that by W&Agef/their signature(§§) on the instrument the person(,
or the entity upon behalf of which the person(§) acted, executed the instrument.
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.
HELEN A.ANAYA-RIOUX
Notary Public -California
San Diego County
Commission •2153589
My Comm.Expires May 19.2026
Signatur
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 Californ )
County of _,v, b I e a o )
On — 15- Z)- before me, Nv e-�(A A.<S1fWV'1 , a Notary Public,
personally appeared o er+ -3 Z-O-InG who proved to me on the basis of
satisfactory evidence to be the person(s) "se name(s)6i /are subscribed to e within
instrument and acknowledged to m that e/ he/they executed the same in his her/their
authorized capacity(ies), and that by is er/t elr signature(s) on the instrument th person(s),
or the entity upon behalf of which the person(s) acted, executed the instrument.
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.
ANGELA A. SIMON
UI c WTAV weu2182395• N
/�' $NI DIE00 Caxtt �
Signature
^.t
SMRH:474540864.3 -7-
TRUE COPY CERTIFICATION
(Government Code 27361.7)
S�
o
/ 1.44 rf2 L
Place of Execution
I certify under penalty of perjury that this material is a true copy of the
original material contained in this document.
DIC ✓i A') S J C1l4 r o ed e r-
Date signature of Declarant
�& A (7 ✓A
Type or Print Name
Rec.Form#R9.1 (Revised 11-15-10)
A notary public or other officer completing this certificate verifies only the identity of the individual who signed the
doewnent to which this certificate is attached, and not the truthfulness, accuracy, or validity of that document.
State of California )
County of )
On before me, a Notary
Public, personally appeared 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.
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
SMRH:474540864.3 -8-
EXHIBIT "A"
Legal Description of the Property
LOTS 1 THROUGH 28, INCLUSIVE, OF CITY OF ENCINITAS TRACT NO. 89-031, IN
THE CITY OF ENCINITAS, COUNTY OF SAN DIEGO, STATE OF CALIFORNIA,
ACCORDING TO MAP THEREOF NO. 14032, FILED IN THE OFFICE OF THE
COUNTY RECORDER OF SAND DIEGO COUNTY ON SEPTEMBER 7, 2000.
SMRH:474540864.3 EXHIBIT "A"
EXHIBIT "B"
Description and Plat of Stormwater Facilities
[Attached Hereto]
All items, and location of items, shown on illustration are shown for informational
purposes only and should not be relied upon for content, precise design or dimension.
The actual conditions will control. The above plan is for illustrative purposes only and
are approximate dimensions.
SMRH 474540864.3 EXHIBIT „B"
EXHIBIT A-1
LEGAL DESCRIPTION
LOTS 1 THRU 28 INCLUSIVE OF CITY OF ENCINITAS TRACT NO 89-031, IN THE CITY OF ENCINITAS, COUNY
OF SAN DIEGO STATE OF CALIFORNIA, ACCORDING TO MAP THEREOF NO. 14032, FILED IN THE COUNTY
RECORER OF SAN DIEGO COUNTY,SEPTEMBER 7, 2000.
E)aMIT B-1
STORNIWATER MAINTENANCE AGREEMENT EXH[BIT
OPE OAK - LOTS 1-28
INFLOW FROM
BROW DITCH
AS SHOWN
ON PLAINS DEEP ROOTED, DENSE, DROIK#fT
TOLERANT PLANTING SUITABLE
FOR WELL DRAINED SOIL
VARIES PER PLAN �14" MIN.
BERM
18"x18" BROOKS BOX OUTLET TOP OF
STRUCTURE TG PER PLAN ROCK SPILLWAY
—12
EFERGEMCY OVER FLOW
12'1
5IX51 ROCK RIP-RAP
BAC PER FIl1ER — III— I - III - ! -III I' + 1 y IM°EPoNABLE VISIXEEN LINING
PER 0-40, N0. 2
CLOTH. T=2' (TYP) III 11— 1
it it I III I I II I I 'I
18" MIN. ENGINEERED El II-111 III 111 III III. III
SOIL .. -
*SEE NOTE BELOW �u rr,4 �.v�..��t ` + er r`�`,.•�� 'r
I4%WABLE VISQLEEN
LINING
12"-3/4" CRUSHED ROCK _8" PVC EMERGENCY.. .
4" PERFORATED PIPE TO CCA ECT J OUTLET PIPE CONSTRUCT HEADWALL
TO INLET. PLAN PER SDRSO D-30
NOTE 4" PIPE SHALL BE CENTERED B" PVC DRAIN PIPE 5h5' ROCK R PER D-40,
IN IMP RUN ENTIRE LENGTH OF TAP @ 2% MIN. W. 2 BACKING W/ FILTER
CLOTH. T=2' (TYP)
*'ENGINEERED SOIL" LAYER SHALL BE MINIMUM 24" DEEP "SANDY LOAM" SOIL MIX WITH
NO MORE THAN 5% CLAY CONTENT. THE MIX SHALL CONTAIN 50-60% SAND, 20-30%
COWOST OR HARDWOOD M,LCHj AND 20-30% TOPSOIL
NOTE TO CONTRACTOR
PERMANENT VEGETATED IMP AREAS SHALL BE CONSTRUCTED PER SIZE ON PLANS AND
SPECIFICATIONS PROVIDED ON THIS DETAIL. ANY DEVIATIONS WITHOUT PRIOR APPROVAL
FROM BOTH THE CITY OF ENCINITAS AM TW ENGINEER OF RECORD WILL RESULT IN
REMOVAL AND RECONSTRUCTION OF IMP AREA.
NOTE.,
BASIS ON LOT 7, 10, 12-21 & 23. TO BE UTILIZED AS STORM WATER TREATMENT
BIORETENTION BASINS TO TREAT R L NOFF FROM PROPOSED STREETS. ON LOTS 1-6, 8, 9
11, 22 & 24-28 BIORETENTION BASINS TO BE UTILIZED AS STORM WATER TREATMENT
BIORETENTION BASINS WHEN f0ES ARE PROPOSED ON EACH LOT.
TYPICAL SECTION BIORETENTION WITH PARTIAL
RETENTION AND BIOFMMATION BASIN
NO SCALE
18"x18" BROOKS 18'k1B" BROOKS WATER QUALITY
BOX OUTLET WATER QUALITY BOX OUTLET VOLIME(DCV)
f SAU7FACEINISHED - y_ W
PEA PLAN WSEL PER PLAN _ _ BASIN FINISHED
STRl1CTUAE TG -- - - - -- VOL UAE OCV STRUCTURE T - -_--- SURFACE
y- - -
_ _ RESTRICTOR PLATE - - — "
ASSEMBLY
- FLOW CONTROL
4" PERFORATED PVC •-v ORIFICE SIZE
8" PVC EALRGENCY.•, EMERGENCY B" PVC PER PLAN
CUTLET PIPE OUTLET PIPE DRAIN PIPE
OUTLET STRUCTURE DETAIL
NO SCALE
EXHIBIT B-2
BMP SIZING
Lot# PROP A(SF) SURFACE VOLUME:V1(CF) BASIN VOLUME:V2(CF) ORIFICE(IN)
1 600 600 600 0.50
2 600&260 600&260 600&260 0.50
3 600&760 600&760 600&760 0.50
4 600&440 600&440 600&440 0.50
5 600&552 600&552 600&552 0.50
6 700 700 700 0.53
7 700 700 700 0.53
8 600&225 600&225 600&225 0.53
9 600 600 600 0.53
10 900 900 900 0.53
11 700 700 700 0.53
12 600 600 600 0.53
13 600 600 600 0.53
14 700 700 700 0.53
15 600 600 600 0.53
16 700 700 700 0.53
17 900 900 900 0.53
18 700 700 700 0.53
19 200 200 700 0.53
20 1 600 600 600 0.53
21 700 700 700 0.53
22 600 600 600 0.53
23 600 600 600 0.53
24 600 600 600 053
25 700 700 700 0.53
26 600 600 600 0.53
27 600 600 600 0.53
28 600 600 600 0.53
EXHIBIT B-3
STORMWATER MAINTENANCE AGREEMENT EXHIBIT
ONE OAK - LOTS 1-3
LEGEND
®PROPOSED BIOFILTRATION
BAS IN
1
1
SCALE 1"=60'
60 0 60
STORMWATER MAINTENANCE AGREEMENT EXHIBIT EXHIBIT B-4
ONE OAK - LOTS 4-6
ILL
i
�Q I
Ar
J,
SCALE: V=60'
60 0 60
EXHIBIT B-5
STORMWATER MANTENANCE AGREEMENT EXHIBIT
OAE OAK - LOTS 7 6 10
l
10 SCALE.' 1"=60'
,
0 0 60
EXHIBIT B-6
STORMWATER MAINTENANCE AGREEMENT EXIHBIT
ONE OAK - LOTS 8-9
I , _
1� IL= �-rY-�-
- -_� f -,
I
4-
SCALE.' 1"=60'
60 0 60
EXHIBIT B-6
STORMWATER MAINTENANCE AGREEMENT MaMIT
OW OAK - LOTS 11-12 /
/
12
I1
SCALE: 1"=60'
60 0 60
STORMWATER MAINTENANCE AGREEMENT EXHIBIT EXHIBIT B-7
ONE OAK - LOTS 13-16
- - 16 -
IS
DD
j, 14
13
SCALE..' 1"--60'
i
60 0 60
STORMWATER MAIlVTENANCE AGREEMENT DaMIT EXHIBIT B-8
Old OAK - LOTS 17-20
SCALE..' 1"=60'
60 0 60
19
J �
18
i 17
EXHIBIT B-9
STORMWATER MAINTENANCE AGREEMENT EXHIBIT
ONE OAK - LOTS 21-22
22
/
/
21
SCALE: 1"=60'
60 0 60
EXHIBIT B-10
STORMWATER MAINTENANCE AGREEMENT EXTHBIT
ONE OAK - LOT
24
�7
<J
�\ 23 ^�
\
\
\
\
\
\
\
\
\ SCALE: 1"-60
60 0 60
EXHIBIT B-11
5TORMWATER MAINTENANCE AGREEMENT EXHIBIT
OIE OAK - LOTS 25
r
`. 25
\ � i
SCALE.: 1"=60'
60 0 60
STORMWATER MAIlVTENANCE AGREEMENT EXHIBIT EXHIBIT B-12
GAE OAK - LOT 26
26
\ I
\
SCALE.' 1"=60'
60 0 60
EXHIBIT B-13
STORMWATER MAINTENANCE AGREEMENT EXFIMTT
ONE OAK - LOTS 27-28
L� �1
27 I
a
28
; 1
SCALE..' 1"=60'
60 0 60
EXHIBIT C-1
Biofiltration with Partial Retention
SUMMARY OF STANDARD INSPECTION AND MAINTENANCE FOR PR-1 BIOFILTRATION WITH PARTIAL RETENTION
The property owner is responsible to ensure inspection,operation and maintenance of permanent BMPs on their property unless responsibility has been formally transferred to
an agency,community facilities district,homeowners association,property owners association,or other special district.
Maintenance frequencies listed in this table are average/typical frequencies.Actual maintenance needs are site-specific,and maintenance may be required more frequently.
Maintenance must be performed whenever needed,based on maintenance indicators presented in this table.The BMP owner is responsible for conducting regular inspections
to see when maintenance is needed based on the maintenance indicators.During the first year of operation of a structural BMP,inspection is recommended at least once prior
to August 31 and then monthly from September through May. Inspection during a storm event is also recommended.After the initial period of frequent inspections,the
minimum inspection and maintenance frequency can be determined based on the results of the first year inspections.
Threshold/Indicator Maintenance Action Typical Maintenance Frequency
Accumulation of sediment,litter,or debris Remove and properly dispose of accumulated materials, . Inspect monthly. If the BMP is 25% full- or more in
without damage to the vegetation or compaction of the one month, increase inspection frequency to monthly
media layer. plus after every 0.1-inch or larger storm event.
. Remove any accumulated materials found at each
inspection.
Obstructed inlet or outlet structure Clear blockage. . Inspect monthly and after every 0.5-inch or larger
storm event.
. Remove any accumulated materials found at each
inspection.
Damage to structural components such as weirs,inlet or Repair or replace as applicable. . Inspect annually.
outlet structures • Maintenance when needed.
Poor vegetation establishment Re-seed, re-plant, or re-establish vegetation per original . Inspect monthly.
plans. . Maintenance when needed.
Dead or diseased vegetation Remove dead or diseased vegetation, re-seed, re-plant, . Inspect monthly.
or re-establish vegetation per original plans. . Maintenance when needed.
Overgrown vegetation Mow or trim as appropriate. . Inspect monthly.
. Maintenance when needed.
213 of mulch has decomposed, or mulch has been Remove decomposed fraction and top off with fresh . Inspect monthly.
removed mulch to a total depth of 3 inches. . Replenish mulch annually, or more frequently when
needed based on inspection.
-"25%full"is defined as%of the depth from the design bottom elevation to the crest of the outflow structure(e.g.,if the height to the outflow opening is 12 inches from the
bottom elevation,then the materials must be removed when there is 3 inches of accumulation—this should be marked on the outflow structure).
EXHIBIT C-2
Biofiltration with Partial Retention
SUMMARY OF STANDARD INSPECTION AND MAINTENANCE FOR PR-1 BIOFILTRATION WITH PARTIAL RETENTION(Continued from previous page)
Threshold/Indicator Maintenance Action Typical Maintenance Frequency
Erosion due to concentrated irrigation flow Repair/re-seed/re-plant eroded areas and adjust the . Inspect monthly.
irrigation system. . Maintenance when needed.
Erosion due to concentrated storm water runoff flow Repair/re-seed/re-plant eroded areas, and make • Inspect after every 0.5-inch or larger storm event. If
appropriate corrective measures such as adding erosion erosion due to storm water flow has been observed,
control blankets, adding stone at flow entry points, or increase inspection frequency to after every 0.1-inch
minor re-grading to restore proper drainage according or larger storm event.
to the original plan. If the issue is not corrected by . Maintenance when needed. If the issue is not
restoring the BMP to the original plan and grade, the corrected by restoring the BMP to the original plan
[City Engineer] shall be contacted prior to any additional and grade,the [City Engineer] shall be contacted prior
repairs or reconstruction. to any additional repairs or reconstruction.
Standing water in BMP for longer than 24 hours Make appropriate corrective measures such as adjusting • Inspect monthly and after every 0.5-Inch or larger
following a storm event irrigation system, removing obstructions of debris or storm event. If standing water is observed, increase
invasive vegetation, clearing underdrains, or inspection frequency to after every 0.1-inch or larger
Surface po nding longer than approximately 24 hours repairing/replacing clogged or compacted soils. storm event.
following a storm event may be detrimental to
• Maintenance when needed.
vegetation health
Presence of mosquitos/larvae If mosquitos/larvae are observed: first, immediately . Inspect monthly and after every 0.5-inch or larger
remove any standing water by dispersing to nearby storm event. If mosquitos are observed, increase
For images of egg rafts, larva, pupa, and adult' landscaping; second, make corrective measures as inspection frequency to after every 0.1-inch or larger
mosquitos,see applicable to restore BMP drainage to prevent standing storm event.
http�www mosp uito orR/bioloKV water. • Maintenance when needed.
If mosquitos persist following corrective measures to
remove standing water, or if the BMP design does not
meet the 96-hour drawdown criteria due to release
rates controlled by an orifice installed on the
underdrain, the [City Engineer] shall be contacted to
determine a solution. A different BMP type,or a Vector
Management Plan prepared with concurrence from the
County of San Diego Department of Environmental
Health,may be required.
Underdrain clogged Clear blockage. • Inspect if standing water is observed for longer than
24-96 hours following a storm event.
• Maintenance when needed.