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2018-499601 1, DOC# 2018-0499601 - IIIII III IIII IIIII IIII IIIII III I II I III I III I II II IIII IIII Dec 04, 2018 04:10 PM OFFICIAL RECORDS Recording Requested By: Ernest J. Dronenburg, Jr., SAN DIEGO COUNTY RECORDER City Engineer FEES: $0.00 (SB2 Atkins.-,$0.00) PAGES: 23 When Recorded Mail to: City Clerk City of Encinitas 505 South Vulcan Avenue Encinitas, CA 92024 SPACE ABOVE FOR RECORDER'S USE AGREEMENT FOR MAINTENANCE OF PRIVATE STORM WATER POLLUTION AND rA FLOW CONTROL FACILITIES BY SCHOOL DISTRICT ®e� APN: 257-050-81 Planning Case #: NA CDP ADDRESS: 2150 Village Park Way Grading Plan: 13852-G THIS AGREEMENT is between the City of Encinitas, a municipal corporation, hereinafter referred to as the "City", and SAN DIEGUITO UNION HIGH SCHOOL DISTRICT, its heirs, successors, and assigns, collectively hereinafter referred to as "Owner", owner(s) of that certain real property, hereinafter referred to as "Property", that is described in Exhibit "A" which is attached hereto and made a part hereof. This Agreement is for the periodic Maintenance of certain private stormwater treatment and pollution control facilities, hereinafter referred to collectively as "Stormwater Facilities". Stormwater Facilities include but are not limited to Best Management Practices (BMPs), Integrated Management Practices (IMPs), Low Impact Development (LID) features, Structural stormwater treatment devices, and drainage facilities. The description and plat of Stormwater Facilities 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 Property and are used by OWNER; and WHEREAS, the Property benefits and uses the Stormwater Facilities, which are described in Exhibit "B"; and WHEREAS, it is the desire of the City and the responsibility of the 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 r , 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 the Owner and the City that this Agreement constitute 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 the Owner's maintenance requirements for the Stormwater Facilities. 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) The Owner shall inspect the Stormwater Facilities after all major storms. In addition, the Owner shall inspect the Stormwater Facilities at the minimum frequency specified in Exhibit "C", but not less than twice per year. ii) The Owner shall provide upkeep and repair to preserve the Stormwater Facilities in good working order and shall repair all deficiencies identified in the 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, the Owner shall ensure that the Stormwater Facilities are in proper working order for the rainy season, which starts on October 1. iii) The 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, the Owner shall perform an inspection of the 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) The Property 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 12 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 and have Maintenance performed by the Owner in accordance with the terms and conditions of this agreement and the plans and specifications identified in approved Grading Plan Number 13852-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 the 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 access roadbeds; 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. 7) Any liability of the Owner for personal injury to any worker employed to provide Maintenance under this Agreement, or to third persons, as well as any liability of the 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 the Owner. 8) 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, or the failure to provide Maintenance for the Stormwater Facilities. This Agreement imposes no liability of any kind whatsoever on the City and the Owner agrees to hold the City harmless from any liability in the event the Stormwater Facilities 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)The Owner shall provide access to the Stormwater Facilities within the Property to City's inspectors, employees, agents, and contractors 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)The Owner hereby grants permission to the City, its\ authorized agents, and its employees, to enter upon the Property and to inspect the Stormwater Facilities following a 48 hour notice 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)ln the event the Owner fails to maintain the Stormwater Facilities in good working condition as determined by the City Engineer, the City, its agents, employees, or its contractors, may enter upon the Property and take the steps deemed necessary to correct deficiencies and shall charge the costs of such repairs to the Owner. In the event the City pursuant to this Agreement, performs work of any nature, or expends any funds for attorney's fees, administrative costs, contractors, employees, consultants, materials, or other costs in the performance of said work, the Owner shall reimburse the City in full. Such reimbursement shall be due within thirty (30) days of receipt of a notification for all costs incurred by the City, including any administrative costs and attorney's fees. If said funds are not paid by Owner within (30) days, City reserves the right to take legal action for cost recovery and to file with the County Recorder of San Diego County an assessment lien on the Property. 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. 13)The terms of this Agreement may be amended in writing following Owner's request and upon written approval by the City Engineer. 14)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. IN WITNESS HEREOF, the parties have executed this Agreement. OWNER: ` 10/24/18 Tina ouglas For DATE San Dieguito Union High School District Signature of OWNER must be notarized. Attach the appropriate acknowledgement. CITY OF ENCINITAS:. --, —0— � , / — Iii 29 $ C DWARD J. PE DAT CIT rJMER, NGINEER DEVELOPMENT SERVICES 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 S-ain 1Pci ) On before me, e11� Dad Here Insert Name mid Title of the Officer personally appeared , inVas Jame(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. I certify under PENALTY OF PERJURY under the laws of the State of California that the foregoing paragraph is true and correct. CYNTHIA G.SKEBER WITNESS my hand and official seal. Notary Public-California z z San Diego County n Commission#2194345 My Comm.Expires Apr 28,2021 Signature Q, Signature of Notary P lic 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 � � w� � ��� Title or Type of Documen : C-)yVyZ wa � WYl r R C Document Date: �'1(t . 1DC, `�©1 Number of Pages: Signer(s) Other Than Named Above: Capacity(ies) Claimed by Signer(s) Signer's Name: �1f1'a,�"'�C`1VLA 'a Signer's Name: ❑Corporate Officer — Title(s)� q ❑ Corporate Officer — Title(s): ❑ Partner — ❑ Limited ❑General ❑ Partner — ❑ Limited ❑General ❑ Individual ❑Attorney in Fact ❑ Individual ❑Attorney in Fact ❑Trustee ❑ Guardia or onsewator El Trustee ❑Guardian or Conservator $Other: A v � ❑ Other: Signer Is Representing: Signer Is Representing: 02016 National Notary Association •www.NationalNotary.org • 1-800-US NOTARY(1-800-876-6827) Item#5907 ' ALL-PURPOSE ACKNOWLEDGMENT 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 0—VIN SS. On 1 a' — -3 --10 1 � , before me, 101 � S � �'l U►'1 ,Notary Public, DATE personally appeared �=��o-'C' I YYl�� ,who proved to me on the basis of satisfactory evidence to be the person(s) whose name(s) is are subscribed the within instrument and ac ged to me th he she/they executed the sa �his er/th eir authorized capacity(ies), and that by hi / eir signature(s) on the instrument the person(s), or the entity upon behalf of which the person(s) acted, executed the instrument. ANGELA A. SIMON Comml 2182396 N I certify nder PENALTY OF PERJURY under the N 3 NOTARY PUBLIC-CALIFORNIA Y SAN DIEGO COUNTY laws of the State of California that the foregoing � MY Comm.EXP.MAR.2,2021� paragraph is true and correct. WITNESS my hand and official seal. a', & a , "-," PLACE NOTARY SEAL IN ABOVE SPACE NOTARY'S SIGNATURE OPTIONAL INFORMATION The information below is optional. However,it may prove valuable and could prevent fraudulent attachment of this form to an unauthorized document. CAPACITY CLAIMED BY SIGNER(PRINCIPAL) DESCRIPTION OF ATTACHED DOCUMENT ❑ INDIVIDUAL ❑ CORPORATE OFFICER TITLE OR TYPE OF DOCUMENT ❑ PARTNER(S) =E(S) ❑ ATTORNEY-IN-FACT NUMBER OF PAGES GUARDIAN/CONSERVATOR ❑ SUBSCRIBING WITNESS DATE OF DOCUMENT ❑ OTHER: OTHER SIGNER(PRINCIPAL)IS REPRESENTING: RIGHT r NAME OF PERSON(S)OR ENTITY(IES) THUMBPRINT 6 OF E SIGNER o a 0 APA01/2015 NOTARY BONDS,SUPPLIES AND FORMS AT HTTP://WWW.VALLEY-SIERRA.COM ©2005-2017 VALLEY-SIERRA INSURANCE EXHIBIT "A" LEGAL DESCRIPTION PARCEL 1: APN: 257-050-81 THAT PORTION OF LOT 20 OF RANCHO LAS ENCINITAS, IN THE COUNTY OF SAN DIEGO, STATE. OF CALIFORNIA, ACCORDING TO MAP THEREOF NO. 848 FILED IN THE OFFICE OF THE COUNTY RECORDER OF SAID COUNTY. =loll FUSCOE lip... E N G I N E E R I N G 6390 Greenwich Dr.,Suite 170,San Diego,California 92122 tel 858.554.1500 o fax 858.597.0335 o www.fuscoe.com EXHIBIT "B" SHEET 1 BIOFILTRATI BASIN FOR OMBINED POLLUTANT AND HYDR DIFICATION CONTROL 00 D �u NEW CLASSROOM BUILDING 'P' SEE GRADING PLAN 13852-G mp 1] u�II u BIOALTRATION BASIN FOR COMBINED POLLUTANT LLUTANT AND DROMODIFICATION -VON KEY MAP gill SCALE: 1"=60' FUSCOE E N G I N E E R I N G 6390 Greenwich Dr.,Suite 170,San Diego,California 92122 tel 858.554.1500 c fax 858.597.0335 0 www.fuscoe.com ' EXHIBIT "B" SHEET 2 BASIN WIDTH VARIES PER PLAN DEEPENED CURB & GUTTER WHERE OCCURS. SEE DETAIL 'D' ON THIS SHEET FLOW CONTROL STRUCTURE SLOPE TO EXTEND TO TOP PER DETAIL 'I' THIS SHEET OF CURB IN AREAS WITHOUT CURB CUT 6" CLEANOUT PER SDRSD PLANTING PER SC-01W/ THREADED CAP. LANDSC P�4 E PLANS 1.5q MAN. — 11 MOUND ROCK/SOIL AROUND �JA CLEANOUT v EEBOARD VAREI — I�IT� IIIaIHIHII �1I-E ill is I 18" , IIr _�_ _ FG PER PLAN IES � 1 MIN. , - _ I- y k o •�1 1-11 III I -ILI _ —I I ly,l II i �I�I I ilT-iii-iT( -Tfi=Tff�TIT= - n n�i� I-E I =1I I I JTi-a I I �� MIN. 18" SOIL MEDIA WITH 2" WELL-AGED, ��I I I�I=aI�I�I�I I I��1-I �1T11 I!I I MIN. 5 IN/HR INFILTRATION SHREDDED �I 111I1111IITL till II� II l� = RATE HARDWOOD MULCH 4" WASHED PEA .. ::... GRAVEL FILTER 12" THICK LAYER OPEN COURSE LAYER ABOVE AGGREGATE GRADED SUB-BASE `� COURSE, ROUNDED #57 30 MIL THICK PVC STONE, 40% VOIDS OR APPROVED EQUAL IMPERMEABLE �r, VERTICAL LINER ` ` `r ` ` ` ' ` �� ?` ` ` r. TRENCH NATIVE SOIL AROUND r MIN. 6" PERFORATED. rj fir` r r BOTTOM PERIMETER TO EXTEND EXISTING NATIVE SOIL .PVC UNDERDR IR �'ti r ,r r`. VERTICAL LINER 2' MIN. INTO SOIL OF THE TORREY SANDSTONE ORIFICE PER DETAIL 'I' ON THIS SHEET OUTLET PIPE. SIZE AND IE PER PLAN DETAIL- BIOFILTRATION BASIN (BMP 1 &2) NOT TO SCALE v� lil,.o FUSCOE E N G I N E E R I N G 6390 Greenwich Dr.,Suite 170,San Diego,California 92122 tel 858.554.1500 o fax 858.597.0335 c www.fuscoe.com EXHIBIT "B" SHEET 3 ELEVATION TABLE EMERGENCY OVERFLOW BMP ID FG - TG - CATCH BASIN TYPE 'G-1' PER SDRSD BMP 1 236.70' 237.53' D-08 BMP 2 236.30' 237.30' PONDING WATER SURFACE 2" (BMP 1) ELEVATION EQUAL TO TOP 6" (BMP 2) TOP OF BASIN OF GRATE ELEVATION ELEV PER PLAN - W 3l 1 ! il - lli Oo! w FINISHED GRADE (FG) PER PLAN (LEVEL BOTTOM) ORIFICE r SIZE AND IE PER PLAN PIPE OUT PER PLAN. 6" DIA. PERFORATED SEE PVC LINER SUBDRAIN/S PER PLAN PENETRATION NOTE THIS SHEET. FLOW CONTROL ORIFICE PLATE SEE DETAIL TO IE OUT PER PLAN LEFT 3" X 3/8" DETAIL: FLOW CONTROL STRUCTURE STAINLESS NOT TO SCALE STEEL BOLT PLATE ORIFICE PLATE: AND NUT MIN. SQUARE DIMENSIONS 1' MIN. 6" (TYP.) d GREATER THAN PIPE DIA. HOT DIP GALVANIZED PLATE AFTER HOLES 3" (TYP.) ORIFICE HAVE BEEN DRILLED —— 0 0 1/2" f GASKET MAX INFLOW PIPE 0 o ORIFICE DIA.: BMP 1: 2.98" a 3/8" DIA. BMP 2: 1.50" HOLE (TYP.) 1. ORIFICE & FLANGE CONNECTION TO CONCRETE SHALL F U SCOE BE FILLED WITH 30 DUROMETER NEOPRENE RING FLOW CONTROL ORIFICE PLATE E N G I N E E R I N G NOT TO SCALE 6390 Greenwich Dr.,Suite 170,Son Diego,California 92122 tel 858.554.1500 0 fax 858.597.0335 o www.fuscoe.com EXHIBIT "C" POST-CONSTRUCTION PERMANENT BMP OPERATION & MAINTENANCE PROCEDURE DETAILS STORM WATER MANAGEMENT AND DISCHARGE CONTROL MAINTENANCE AGREEMENT 0&M RESPONSIBLE PARTY DESIGNEE: SDUHSD INSPECTION MAINTENANCE MAINTENANCE QUANTITY BMP DESCRIPTION FREQUENCY FREQUENCY METHOD TREATMENT CONTROL PR-1 BIOFILTRATION BEFORE AND AFTER AS DETERMINED BY REMOVE TRASH AND 2 EA BASIN (BMP 1 & 2) LARGE STORM EVENTS INSPECTION OF ANY DEBRIS. VEGETATION OR ON A WEEKLY BLOCKAGE OF INLETS/ SHOULD BE TRIMMED BASIS DURING PERIODS OUTLETS, STRUCTURAL TO MAX. 18 INCHES OF WET WEATHER. DAMAGE AND EROSION IN HEIGHT. DAMAGE. HYDROMODIFICATION CONTROL FLOW CONTROL STRUCTURE BEFORE AND AFTER AS DETERMINED BY 2 EA LARGE STORM EVENTS INSPECTION OF ANY OR ON A WEEKLY BLOCKAGE OF INLETS/ BASIS DURING PERIODS OUTLETS, STRUCTURAL OF WET WEATHER. DAMAGE AND EROSION DAMAGE. lily,. FUSCOE E N G I N E E R I N G 6390 Greenwich Dr.,Suite 170,San Diego,California 92122 tel 858.554.1500 0 fax'858.597.0335 o www.fuscoe.com a 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 BIVIPs have an elevated:underdrain discharge point that creates storage capacity in:the aggregate storage layer.Typical biofiltration with partial retention components include: 4 Inflow distribution mechanisms(e.g:,perimeter flow spreader or filter strips) •_ Energy dissipation mechanism for concentrated inflows(e.g.,splash blocks or ripmp) - • 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 Fife 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. Biof ltration with Partial Retention •, Erosion,due to concentrated storm water runoff that is not readily:corrected by add.ing�erosion . control blankets, adding stone at flow entry points, 'or minor re-grading to restore proper drainage according to the:or:iginal 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,Ca I ifornia Department of Fish and Wildlife,or the United States fish and Wildlife Service. This could result in the need for specific resource agency perrnits.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 PR-1 Riofiltration with Partial Retention SUMMARY OF STANDARD INSPECTION AND:MAINTENANCE FOR PR-1 BIOFILTRATION WITH PARTIAL RETENTION I.The property owner is:responsible to.ensure inspection,operation and maintenance of per BMPs on th.eir: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.lnspection: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. i • 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.. 2/3 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:Y4 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). PR=1.Page 3 of 11 January 12, 2017 PR 1 Biofiltrati®n with Partial Retention SUMMARY,OF STANDARD INSPECTION AND MAINTENANCE FOR PR4 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..0.17inch 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 riot 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 Surface ponding longer than approximately 24 hours invasive vegetation,. clearing . underdrains, or inspection frequency to after every 0.1-inch or larger following. a storm :event may: be detrimental: to repair ing/replacifig clogged.orcompacted soils. storm event. ;vegetation health • Maintenance when needed: 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:B.MP drainage to prevent standing: storm event. htto.l/www.mosguito.orF/biology 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, of 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. PR-1.Page 4 of 11 January 12, 2017 Biofiltrati.o.n with Partial Retention References American Mosquito Control Association. http://Www.moscluito.org/ California Storrs Water Quality Association (CAS.QA). 2003.:Municip.al BMP Handbook, htt s: /.wwW,casga.or r esources/bmp=handbooks/munici; al-bmi)-handbook County of San Diego.2014. Low Impact Development Handbook. http:%/www:sandiegocountv.gov%content/sdc/dnw/watersheds/susmnllid html San Diego County.Copermittees. 2016: Model BMP:Design Mahual,Appendik.E, Fact Sheet PR-1. htto://www.oroie6t6leanwater.'or!z,index.ohb?oi)tioh=com content&view=article&id=250&Itemid=220 PR-1. Page 5:of 11 January 12,20.17 PR-1 Biofiltration with Partial Retention Page.Inte:ntionally;Blank for Double-Sided Painting:.. ..: PR-1 Page 6:of.11 January 12, 2017 Biofiltration with Partial Retention Dater Inspector::... BM P ID No.; Permit:No.: APN(s): Property/Development Name: Responsible Party,Name and Phone Number: Property Address of BMP:: :.Responsible.Party Address: INSPECTION AND MAINTENANCE CHECKLIST FOR PR-1 BIOFILTRATION WITH PARTIAL RETENTION PAGE 1 of 5 Threshold/Indicator Maintenance Recommendation Date Description of Maintenance Conducted Accumulation of sediment,litter,or:debris q ❑ Remove and properly dispose of Maintenance.Needed? accumulated materials,without damage to the vegetation ❑YES El NO ... ❑if.sediment,litter,:or debds:accumulation. exceeds 25%of the surface ponding ❑ N/A volume within one month,(25%full*), • add a forebay or other pre-treatment measures within the tributary area draining to the BMP.to intercept the materials. ❑Other/Comments: Poor vegetation establishment ❑ Re=seed,re-plant,or re-establish Maintenance.Needed?, vegetation per original plans YES ❑Other-/Comments: :. El NO ❑ N/A *'e25%full':'is defined as.%.of the depth from the design bottom elevationto 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). PR4 Page 7:of 11 January 12,2017 :PR-1 Biofiltration with Partial Retention Date:: inspector:. BMP ID No:: Permit:No.: APN(s): INSPECTION AND.MAI NTENANCE.CHECKLIST.FOR PR-1 BIOFILTRATION.WITH PARTIAL RETENTION PAGE 2 of5 Threshold/Indicator Maintenance Recommendation Date:: Description of Maintenance Conducted Dead or diseased vegetation: ❑ Remove dead or diseased vegetation,re- Maintenance Needed? seed,re=plant,or.re-establish vegetation per,original.plans ❑YES ❑ NO ❑Other/Comments: ❑ N/A Overgrown vegetation ❑ Mow or trim as appropriate .. Maintenance Needed? ... ❑ Other Comments: ❑YES ❑:NO El N/A 2/3 of ;mulch has decomposed;.'or mulch has ❑ Remove decomposed fraction and top,off been removed with fresh mulch to a total depth of 3 Maintenance Needed? inches L7 YES ❑Other/Comments'. .. .. El NO ❑ N/A . . wi P13-1.Page 8:of 11 January 12, ;2017 PR-1 p _.:. Bi filt ra ti on w ith Partial Retention Date:: nector: BMP ID No.,. . Permit:No.: APN(s}: INSPECTION AND MAINTENANCE.CHECKLIST.FOR PR-1.13IOFILTRATION.WITH PARTIAL RETENTION PAGE 3 of S* :Threshold/Indicator :. Maintenance Recommendation T Date: Description of Maintenance Conducted Erosion due to concentrated irrigation;flow ❑:Repair/re=seed/re-plant eroded areas:and Maintenance Needed? adjust the irrigation system 11 YES:. El Other/Comments:. ❑NO ❑ N/A.. €rosion due to concentrated storm -water : ❑ Repair/re-seed/re-plant eroded areas;and runoff flow make appropriate corrective measures Maintenance Needed? such as adding erosion control blankets, adding stone at flow entry.points,or ❑YES:. _ minor re-grading to restore proper ❑ NO drainage according to the original plan ❑N/A. ❑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:/Comments:. PR-1,Page 9:6f.11 January 12,2017 PR-1 . Biofiltration with Partial Retention Date:... . kPN(s):spector::. : BMP ID No.: Permit No.: - INSPECTION'AND,MAWTENANC.E,CHECKLIST,FOR PR-1,610FILTRATION WITH PARTIAL RETENTION PAGE 4 of.5 Thresh old%Indicator Maintenance Recommendation Date: Description of Maintenance Conducted Obstructed inlet'or outlet:structure El Clear blockage Maintenance.Needed? ❑•Other/:Comments: :. ❑YES ❑NO ❑N/A. Underdrain clogged: (inspect. underdrain. if: ❑Clear.b:lockage :. standing.water is:observed for longer than.24 ..... 96 hours following a:storm event) ❑Other:/Comments.: Maintenance Needed? El YES ❑NO ❑ N/A Damage to structural components such as ❑Repair or replace as applicable weirs,inlet or outlet structures ❑Other/Comments: Maintenance:Needed?.:. . ❑YES ❑NO N/A .. PR,1.Paage 10.0f.1.1 January 12, 2017 PR-1 Biofiltration with Partial Retention Date: Inspector:. BMP ID No:: Permit No.: APN(s): INSPECTION AND MAINTENANCE CHECKLIST.FOR PR-1 BIOFILTRATION.WITH PARTIAL RETENTION PAGE.5 of 5 Threshold/Indicator Maintenance Recommendation a Date Description of Maintenance Conducted Standing waterin BMP for longer than 24 hours ❑:Make appropriate corrective measures such following a storm event* as adjusting irrigation system,removing obstructions of debris or.invasive Surface ponding longer than approximately.24 vegetation,clearing underdrains,or hours following..a. :storm :event may be detrimental to vegetation health repairing/replacing clogged or compacted soils. Maintenance Needed? El Other/Comments: ❑:YES ❑NO ❑N/A Presence of mosquitos/larvae ❑Apply corrective measures to remove standing water in BMP when standing For images of egg rafts, larva, pupa, and adult water occurs for longer than 24-96 hours mosquitos;see following a.storm event.** httr_://www.mosquito.orp/biology ❑ Other/Comments: Maintenance Needed? ❑YES ❑ NO ❑ N/A *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 o:utlet.structure.The specific cause of the drainage issue-must be determined and corrected.. **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:byan orifice installed on the underdraini;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,maybe required. PR 71.Page 11:of 11 January 12,;2017