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Tigard HS - COT Private Stormwater Facilities Agreement RETURN RECORDED DOCUMENT TO: CITY HALL RECORDS DEPARTMENT CITY OF TIGARD 13125 SW Hall Blvd. Tigard,OR 9722 Space above reserved for Washington County Recording information PRIVATE STORMWATER FACILITIES AGREEMENT This Agreement is made and entered into this 4th day of January 2019,by and between the CITY OF TIGARD, a municipal corporation of the State of Oregon(City) and Tigard Tualatin School District(Owner). RECITALS A. Owner has developed or will develop the Facilities listed below. (List the type of private stormwater facilities on site and the quantity of each type). Facility type: Contech StonnFilter Vault SDFV-1 Quantity: 17 (Low drop filter cartridges) Size: 8' x 11' Facility type: Contech StormFilter Vault SDFV-2 Quantity: 13 (Low drop filter cartridges) Size: 8' x 11' Facility type: Contech StormFilter Vault SDFV-3 Quantity: 14(18"filter cartridges) Size: 8'x 11' Facility type: Contech StonnFilter Catch Basin Quantity:. 5 (Single low-drop filter cartridge) Size:n/a Facility type: Contech StormFilter Catch Basin Quantity: 1 (Dual filter low-drop cartridges) Size: n/a Facility type: Contech StonnFilter Catch Basin Quantity: 1 (Single 18"filter cartridge) Size:n/a Facility type: Contech StormFilter Catch Basin Quantity: 5 (Dual 18"filter cartridges) Size; n/a Facility type: Contech StormFilter Manhole Quantity: 5 (Low-Drop filter cartridges) Size: 72" Facility type:Flow-Through Stormwater Planters Quantity: 12 on-site planters Size:per plan Facility type: 5' wide Vegetated Filter Strip Quantity: 1 Size: 313 LF Facility type: 12"wide Rock Gallery Quantity: 1 Size:480 LF B. The Facilities enable development of property at 9000 SW Durham Road,Tigard,OR 97224 while mitigating the impacts of additional surface water and pollutants associated with storm water runoff prior to discharge from the property to the public storm water system. The consideration for this Agreement is connection to the public storm water system. Page 1 —Private Storm water Facilities Agreement 50014-36792 6/2/17 C. The property benefited by the Facilities and subject to the obligation of this Agreement is described below or in Exhibit A(Property) attached hereto and incorporated by reference. See Attached Exhibits: EXHIBIT A—Legal Description EXHIBIT B—Property Map/Site Plan EXHIBIT C—Catch Basin StormFilter Operation and Maintenance EXHIBIT D—StormFilter Inspection and Maintenance Procedures EXHIBIT E—Flow-Through Planter Operation and Maintenance Plan EXHIBIT F—Vegetated Filter Strip Operation and Maintenance Plan EXHIBIT G—Water Quality Manhole Operation and Maintenance Plan D. The Facilities are designed by a registered professional engineer to accommodate the anticipated volume of runoff and to detain and treat runoff in accordance with Clean Water Service City's Design and Construction Standards. E. Failure to inspect and maintain the Facilities can result in an unacceptable impact to the public storm water system. NOW,THEREFORE,it is agreed by and between the parties as follows: 1. OWNER RESPONSIBILITIES. The City shall provide Owner an Operations and Maintenance (O&M Plan)for each facility. Owner agrees to operate,inspect and maintain each Facility in accordance with the current O&M Plan and any subsequent modifications to the Plan. Owner shall maintain a log on inspection activities. The log shall be available to the City upon request during City inspections 2. DEFICIENCIES. All aspects in which the Facilities fail to satisfy the O&M Plan shall be noted as "Deficiencies". 3. OWNER CORRECTIONS. All Deficiencies shall be corrected.at Owner's expense within thirty (30)days after completion of the inspection. If more than 30 days is reasonably needed to correct a Deficiency, Owner shall have a reasonable period to correct the Deficiency so long as the correction is commenced within the 30-day period and is diligently prosecuted to completion: 4. CITY INSPECTIONS. Owner grants City the right to inspect the Facilities. City will endeavor to give ten(10)days prior written notice to Owner,except that no notice shall be required in case of an emergency. City shall determine whether Deficiencies need to be corrected. Owner(at the address provided at the end of this Agreement, or such other address as Owner may designate in writing to City)will be notified in writing through the US Mail of the Deficiencies and shall make corrections within 30 days of the date of the notice. 5. CITY CORRECTIONS. If correction of all Owner or City identified Deficiencies is not completed within the timeframe set forth in Section 3,City shall have the right to have any Deficiencies corrected. City(i)shall have access to the Facilities for the purpose of correcting such Deficiencies and (ii)shall bill Owner for all costs reasonably incurred by City for work performed to correct the Deficiencies (City Correction Costs)following Owner's failure to correct any Deficiencies in the Facilities. Owner shall pay City the City Correction Costs within thirty(30)days of the date of the invoice. Owner understands that this is a debt owing to City. In addition,Owner agrees that upon non-payment, City Correction Costs shall be secured by a lien on the Property for the City Correction Cost amount plus interest and penalties. 6. EMERGENCY MEASURES. If at any time City reasonably determines that the Facilities create any imminent threat to public health,safety or welfare,City may immediately and without prior notice.to Page 2—Private Storm water Facilities Agreement 50014-36792 6/2/17 Owner take measures reasonably designed to remedy the threat. City shall providenotice of the threat and the measures taken to Owner as soon as reasonably practicable, and if such imminent threat arose from a Deficiency with the Facilities, charge Owner for the cost of these corrective measures as provided in Paragraph 5. 7. FORCE AND EFFECT. This Agreement shall constitute an equitable servitude or covenant running with the land and shall bind all owners of the Property present and future,and their heirs, successors and assigns. 8. AMENDMENTS. The terms of this Agreement may be amended only by mutual agreement of the parties.Any amendments shall be in writing, shall refer specifically to this Agreement,and shall be valid only when executed by the owners of the Property, City and recorded in the Official Records of the county where the Property is located. 9. PREVAILING PARTY. In any action brought by either party to enforce the terms of this Agreement,the prevailing party shall be entitled to recover all costs, including reasonable attorney's fees as may be determined by the court having jurisdiction,including any appeal. 10. SEVERABILITY. The invalidity of any section, clause, sentence, or provision of this Agreement shall not affect the validity of any other part of this Agreement,which can be given effect without such invalid part or parts. Page 3—Private Storm water Facilities Agreement 50014-36792 60117 IN WITNESS WHEREOF, Owner and City have signed this Agreement. NOTARIZE DOCUMENT BELOW By: C, Title: C j v STATE OF OREGON ) , ) ss. County of This instrument was acknowledged before me on s. '. as ,20 a-0 ,by Pti`‘r1 a c. (kA oo as CPO of 1j — T edio.Ft ie) ltQ ,. LULL NOTARY PUBLIC FOR OREGON � PATRICIA CLAUSEN ROBERT'S My Commission Expires: 1114 I D.1 NOTARY PUBLIC-OREGON COMMISSION NO.964265 MY COMMISSION EXPIRES JULY 04.2021 CITY OF TIGARD By: City Engineer) Page 4—Private Storm water Facilities Agreement 50014-36792 6/2/17 Lot Book Service Guarantee No.:7019-2931751 Page 5 of 5 ALSO, EXCEPTING THEREFROM that portion described on the Dedication Deed for road or street purposes recorded June 07, 2007 as Fee No. 2007 063003. AND ALSO, EXCEPTING THEREFROM that portion described on the Dedication Deed for road or street purposes recorded January 17, 2008 as Fee No. 2008 004472. PARCEL IV: The West 260 feet of the following described tract of land situated in Section 14,Township 2 South, Range 1 West, of the Willamette Meridian, in the City of Tigard, County of Washington and State of Oregon: Beginning at a point 30 rods South of the Northeast corner of said Section 14;thence West 53 1/3 rods; thence South 36 rods;thence East 53 1/3 rods; thence North 36 rods to point of beginning. PARCEL V: The West 260 feet of the following described tract of land situated in Section 14,Township 2 South, Range 1 West, of the Willamette Meridian, in the City of Tigard, County of Washington and State of Oregon; Beginning at a point 66 rods South of the Northeast corner of said Section 14; thence West 53 1/3 rods; thence South 24 rods;thence East 53 1/3 rods; thence North 24 rods to point of beginning. NOTE: This legal description was created prior to January 1, 2008. First American Title Lot Book Service Guarantee No.:7019-2931.751 Page 4 of 5 Exhibit"A" Real property in the County of Washington,State of Oregon,described as follows: PARCEL I: A parcel of land located in Section 14,Township 2 South, Range 1 West of the Willamette Meridian, in the City of Tigard, County of Washington and State of Oregon and being described as follows: Beginning at the Northwest corner of that tract of land described in Deed Book 341, page 413, said point being West 1760.0 feet and South 0°01'West 940.5 feet from a stone at the Northeast corner of said Section 14;thence East, along the North line of said tract, 880.00 feet to the Northeast corner thereof, said point also being on the West line of that tract described in Deed Book 585, page 210; thence Northerly, along the West line of said Deed Book 585, page 210 and the Northerly extension thereof, 940.50 feet to the North line of said Section 14; thence Westerly,along the North line of said Section 14, 880.00 feet to the intersection of the centerlines of SW Durham Road and SW 92nd Avenue; thence Southerly, along the centerline of SW 92 Avenue 940.50 feet to the point of beginning. EXCEPTING THEREFROM those portions lying within the boundaries of SW Durham Road and SW 92nd Avenue. ALSO, EXCEPTING THEREFROM that portion described on the Dedication Deed for road or street purposes recorded January 17, 2008 as Fee No. 2008 004472. PARCEL II: A parcel of land located in Section 14,Township 2 South, Range 1 West of the Willamette Meridian, in the City of Tigard, County of Washington and State of Oregon and being described as follows: Beginning at the Northwest corner of that tract of land described in Deed Book 341, page 413, said point being West 1760.0 feet and South 0°01'West 940.5 feet from a stone at the Northeast corner of said Section 14;thence East,along the North line of said tract, 880.00 feet to the Northeast corner thereof, said point also being on the West line of that tract described in Deed Book 585, page 210;thence Southerly,along the West line of said Deed Book 585, page 210 and the Southerly extension thereof, 544.50 feet to the North line of WAVERLY ESTATES, a recorded subdivision; thence Westerly,along the North line of said WAVERLY ESTATES subdivision, 880.00 feet to a point in the centerline of SW 92nd Avenue; thence Northerly, along the centerline of SW 92nd Avenue,544.50 feet to the point of beginning. EXCEPTING THEREFROM that portion lying within the,boundaries of SW 92nd Avenue. ALSO, EXCEPTING THEREFROM that portion described on the Dedication Deed for road or street purposes recorded January 17, 2008 as Fee No. 2008 004472. PARCEL III: Beginning at the Northeast corner of Section 14,Township 2 South, Range 1 West, of the Willamette Meridian, in the City of Tigard, County of Washington and State of Oregon; running thence West along section line 53 1/3 rods; thence South 30 rods; thence East 53 1/3 rods to section line;thence North along section line 30 rods to place of beginning. EXCEPTING THEREFROM those portions lying within the boundaries of SW Durham Road or SW 85th Avenue. First American Title Reference Parcel Number 2S114AA 00100 w Se , 4.0 i,;.,,,...,..,-fty•w.v...-,4fr.kmettpiof,,Att.n, ? i f I: % ---I l'PrOlf4"'" ' - .... -,-t,,,-.1-.J. ------": It1 : -- --- ----- "'''':'---',.,.1''''1-=--*- - . 1 I I i* '1 *t 1 f I - * 1., i ,.. , f I, I 1 t, 1 I , 1 , 2374 lf-11 I I ! r,'1 , 1 i - r I I ikn ,..,. al I 1 i a / I lj 1 11 i l it i $1 / 1 /* ii li 1 1 1 i,..,„ , •-. --PZ'-4-.,.-1. ...!.*-- r.-ft-_,LZ- 4 5::.,,41-t i,t.:—.1—,,,,i,..4V7i I l'i .41.1^ 2S'1 14AA r Prope4 Information Department FirSt A IneriCa n 121 SW Mormon Sheet Suite 300 Portland,OR 97204 Tide Company of ar'egall Phone:503 219 TRIO(8746) Fax:503 7901872 Email'picIportland@firstam,opm , _ .... THIS MAP IS PROVIDED AS A CONVENIENCE IN LOCATING PROPERTY. FIRST AMERICAN TITLE COMPANY OF OREGON ASSUMES NO LIABILITY FOR ANY VARIATIONS AS MAY BE DISCLOSED BY AN ACTUAL SURVEY 9w 4 ... EXHIBIT B 10. $$iiO3t�1p1l� ��77��{N{@@��5S��N-SOADE 20. LDA.PLANTER-4271 SF CONTRIBUTING AREA 26. UDA•10 PLANTER- 70 SF CONTRIBUTING AREA - 1 T'A'D IS 1 CARTRIDEES 383 SF BOTTOMN$A SFBOTTOMA '`,.,_,___,0 �T� WATER QUALITY FLOW:0.05 CFS 6'TOTAL DEPTH WITH 3:1 SIDE SLOPES TO BOTTOM 6-DEPTH FLOW THROUGH PLANTER • u'7 PEAK FLOW:O.BOCFS AREA SITE/PROPERTY DATA 1s1' A 111 JUNCUS PATENS.SPREADING RUSH 11. $TQR FI T fR7CISIM.SDAD•7 302 JUNCUS PATENS-SPREADING RUSH 19 CAMASSWQUAMASH-COMMON CAMAS tE 114081lU RS CAW:0,04 S 107 CAREX EDTA•BOWLES GOLDEN SEDGE 117 CARIX OBNUPTA-SLOUGH SEDGE SITE ADDRESS; 9000 SW DURHAM RD. WATERQSIALITYPLOW:0,04C/S 74 CALIASSAQUAMASH-COMMOM4CAMAS 111 DESCHAMPSUCESPROSA'BERINGENSIS'•TUFTED TIGARD,OR 97224 Li� PEAK FLOW:0.65 CFS 293 SCIRPUS MICROARPUS•SMALL-FRUITED BULRUSH HAIRGRASS ASSESSOR'S MAP: 25114AA - , RI$�1 = �7p��T` 21 CORNUSSERICEA'KELSEYI'•KELSEY RED TWIG 19SYMPHYOTRICHUMSUBSPICATUM-DOUGLAS'ASTER SITE TAX LOT: 100 I if 12- TWO IS TIEg,SlARTRIIS02.50Ge•tfi DOGWOOD svltNtA>'WwRo ILTER GAIY�RIDGES 27, UDA•61•PLANTER-J 939 SF CONTRIBUTING AREA PLANNING DISTRICT: CITY OFTIGARD WATER QUALITY FLOW 006 CPS 21. LIDA-5 PLANTER-11761 SF CONTRIBUTING AREA 306 SF BOTTOM AREA SITE SIZE: 43.5 ACRES .o A tor RA..., PEAK FLOW:0.12CPS 704 SF BOTTOM AREA 6'DEPTH FLOWTHROUGNPLANTER LIfil CARTRIDGE FLOW RATE:15 GPM 6'TOTAL DEPTH WITH 3:1 SIDE SLOPES TO BOTTOM is AREA 107JUNCUS PATENS-SPREADING RUSH s+"� PROJECT. 13 RAI\Fogging 18CAMASSIAQUAMASH•COMMONCAMAS �• OASIS PlLTER GPR IDOS 574 JUNCUS PATENS-SPREADING RUSH 107 CAREXOBNUPTA-SLOUGH SEDGE 1' LOCATION = WATER DUALITY FLOW:0,01CFS 182 CMEX EL&TA-BO`M.ES GOLDEN SEDGE IE750SCHA1APSIA CESPROSA'BERINGEN5IS'•NFTED .,,.. PEAKflOW:0.73 CFS 126CAMASSIA QUAMASH-COMMON CAMAS HAIRGRASS CARTRIDGE RFLOW RATE:15 GPM 373SGRPUSM!CROARPUS-SMALL-FRUITED BULRUSH 18SYMPHYOIRICHUMSUBSPIATUM•DOUGLAS'ASTER Vico-..-.• Y.. SSCALE S '♦ 14. W611'IU AFITERVA7LTFSDFV1 SCO WOOD ELSEYI'-NEI.Sf:YREDTWIG 20. �SFSO PLANTER 6,517 SF-CONTRIBUTING AREA I We •- - 'r _- a --.--,--i-,-,:,=.-:-4-- -` ' _---,T WATERQUALITY FLOW:037 CFS 22, UDA•6PLANTER•$729.5 SF CONTRIBUTING AREA 6'TOTAL DEPTH WITH 3:I SIDE SLOPES TO.EOTTOA! s: i ® ® /. 1e1 ' ---.,h----r-..,,--,--7,---__::_..........._::::::=-7--.11, - -J LOW DROP FILTER CARTRIDGES:17 2605F BOTTOM AREA AREA ' _ � '• CARTRIDGE FLOW RATE 100PM .DEPTH FLOW-THROUGH PLANTER It'll ,+ 518 JUNCUS PATENS•EPREADIIIG RUSH ; ,� lvltl•1,1�.7 ' 15^ 8':11'STORMfILTERVAULT-SGFV-3 91 JUNCUS PATENS-SPREADING RUSH 223 CAREX ELATA•BOOWLES GOLDEN SEDGE - l ® ® �'y _ ”-1-..,.'- 3t IMPERVIOUS AREA 138.686 SF 16 CAAIASSIA QUAMASH-COMMON CAIAAS 61 CAMASSLIQUAMASH-COMMON CAMAS 1 ✓* ,I"1b'1 R,•,.-71.10 [ WATER DUALITY FLOW:029CFS 91 CAREXOBNUPTA-SLOUGH SEDGE 25CORNUS SERICEAYELSEYl'•KELSEY RED TWIG 24 .2,._{V \,� LOW DROP FILTER CARTRIDGES:13 91 DESCHAMPSIACESPITOSA'BERINGENSIS-TUFTED DOGWOOD - c FIL}l! ITS"T .. CARTRIDGE FLOW RATE:10 GPM HAIRGRASS IU (I I�`�� ,.i_ a 165YMPHYOTRtCHUM SUBSPICATUM-DOUGLAS'ASTER 29, ]]jj$T{{��ft���11fT�7�j fLHHOLE it t i ..c'�� "1'"-' �a� -'I.r,•, 18 16. -B'z 11 STORMFILTER VAULT•SDFV3 IMaERVfOUS AREAMQ,066 SF t}• ' ;�'�'I MIR f IMPERVIOUS AREA218.461 SF 23, LIOA•7 PLAHTER•7,Sd1.SFCOHTRIBUTING AREA WATER QUALITY FLOW:0,10 CFS I' J 11 -It ; p.. #,_, t '- _R ,� d,J� l tL'+I WATERQUALIN FLOW:0.46CFS 165 SF BOTTOM AREA LOW-DROP CARTRIDGES:5 ' „ 1k - y`� ,.. 18'FILTER CARTRIDGES:14 6'DEPTH FLOWTHROUGH PLANTER CARTRIDGE FLOW RATE:10 GPM I,O. x , ♦ .1 J� �"-" "`- CARTRIDGE ROW RATE:15 GPM ' 1 r.,-,,,': rea `' 'u._-.1+ 56 JUNCUS PATENS-SPRFADING RUSH 30, 1T WIDE ROCK GALLERY•2,050'SF CONTRIBUTING 10t 17 >� ��-- ��®� -'`. r tr ^0 •i 17. UOA•1 PIAMTTER•T.B4t SP CONTRIBUTING AREA 10 CAMNSSIA QUAMASH-COMMON CAMAS AREA r•, I--- �y Ff A - �`I STORMWATER NOTES "470SF BOTTOM AREA _580AREXODIUPTA-SLOUGH SEDGE 482 SF TREATMENT AREA ' 11 1 -! `'"z _ $7 �F�7 RE �j�B� 6•DEPTHFLOWTHROUSL PLANTER 58DESCHUIPSIACESPROSABERIN0ENMT-TUFTED 6•DEEP DRAINROCKSECTIONWITH4S%VOIDS �� .-0 • ' t 0 t• Ohi F1LT�RECAA 10FiE SIN.SDCB•26 HAIRGRASS -. 1 _ 164 JUNCUS PATENS•SPREADING RUSH 10 SYMPHYOTRICHUM SUBSPICATUAC DOUGLAS'ASTER 31. TWICE FILTt9287RW•1A76 SF COMTTTUBUTING AREA ' B • C 28 CAMASSIA QUAMASH-COMMON CAWS 1,563SPTREATMENTAFIEA ykkN 2. SW-SOCB-27 164 CARES OBNUPTA•SLOUGH SEDGE 24. USA-B PLANTER•425$SF CONTRIBUTING AREA SLOPE VARIES(6.4%TO 20%) .I g i t0 71 g ig 164 CAREX MPSIACESPROSA'BERINGENSIS'•TUFTED 2605FBOTTOM AREA 0 qG HAIRGRASS 6'DEPTH FLOWTHROUGHPLANTER 5 LBS APPROVED LOW GROW SEED MIX: �.I 1 I ��• •;I 3. OJ7{N(:Il,`f QTC B/15IH•SOCB•28 28SYMPHYOTRICHUM SUBSPICATUM-DOUGLAS ASTER 40%DWARF TALL FESCUE r 1 f,4 JIM % E 92 JUNCUS PATENS-SPREADING RUSH 30%DWARF PERENLAL RYE ^` 18. UDA•2 PLANTER•..110�0l!140 SF CONTRIBUTING AREA 16CAMASSIAQUAMASH-COMMON CAMAS 25%CREEPING RED FESCUE I 2765E BOTTOM AREA 91 CAREX OBNUPTA-SLOUGH SEDGE 5%COLONIAL BENT GRASS d. 5 8�11�.R�jT}Lep51N•SDCR-3D 6'OFPTH FLOWTHROUGH PLANTER 92 DESCHAMPSACESPITOSATERINGENSIT•TUFTED 6 D ATTR DGE HAIRGRASS 5. 0 TQGRSIN-SOCB-29 6JUNCUS PATENS•SPREADING RUSH 16 CAMASSIA QMMASH-COMMON CAMAS 16SYMPHYOTRICHUM SU65PICATUM•DOUGLAS ASTER 96CAREXOBNUPTA-SLOUGH SEDGE 25. LIDA•9PLANTER•784i SF-CONTRIBUTWGAREA I _I V ' 96 DESCHAMPSIA CESPITOSA EERINGENSIS'•TUFTED 470SF BOTTOMAI�A I -,'`\ 6. Whit C@iCjijLASIN-SDCB•31 HAIRGRA53 6'DEPTH FLOWTHROUGH PLANTER N10 FILTERLAT9TI1(GE 165YMPHYOTRIGiUMSUBSPICANM-DOUGLAS ASTER • 6 7- $'((jgBEI�T�ASIN-SDCB•32 163JUNCUS PATENS-SPREADING RUSH e 9 OIFEEC�:�E7IEERR 19. LRIAJ PLANTER•A.(L13SFCONTNIBUIING AREA 28 CAMASSU QUAMASH-COMMON CAMAS 23T SF BOTTOM 163 CARIX OBNUFTA-SLOIIGVISEDGE t1 77 x 8, STORRFILTERff��A1TCH BASIN-SOAOd EDEPTH FLOWTHROUGH PLANTER 163 DESCHAMPS:ACESPITOSA'BERINGENSIS'-TUFTED '% Z9 _-_,..�._.._.- RAD?B'FILTERTJIRTRRNBES 83 JUNCUS PAT018$-SPREADING RUSH 28 SYMPAHYOCTR CHUM SLIBSPICATUM-DOUGLAS'ASTER WATER QUALITY FLOW:065 CFS• 14 CAMA5g1A OVAMASH,COMMON CAMAS PEAKROW:0.54 CPS 83 CAREX OBNUFTA-SLOUGH SEDGE SITE PLAN �� 9. STUR9FILTERCATCH BASIN-SOAO.5 83DESCCHAU RCESPITOSA'BERINGENSIS'•TUFTED RAIRGRASS SCALERS ,> TWO 18'FILTER CARTRIDGES 14 SYMPHYOTRICNUM SUBSPICATUM-DOUGLAS'ASTER WATER QUALITY FLOW:0.64 CFS PEAK FLOW:0.85 CFS c4/& OPERATION AND ®®®!► NTECH® ENGINEERED SOLUTIONS MAINTENANCE CatchBasin Ston mFiite TM Maintenance Guidelines Mosquito Abatement Maintenance procedures for typical catch basins can be applied In certain areas of the United States, mosquito abatement is to the CatchBasin StormFilter(CBSF).The filter cartridges desirable to reduce the incidence of vectors. contained in the CBSF are easily removed and replaced during maintenance activities according to the following guidelines. In BMPs with standing water,which could provide mosquito breeding habitat, certain abatement measures can be taken. 1. Establish a safe working area as per typical catch basin service activity. 1. Periodic observation of the standing water to determine if the facility is harboring mosquito larvae. 2. Remove steel grate and diamond plate cover(weight 100 lbs. each). 2. Regular catch basin maintenance. 3. Turn cartridge(s)counter-clockwise to disconnect from pipe 3. Use of larvicides containing Bacillus thuringiensis israelensis manifold. (BTI). BTI is a bacterium toxic to mosquito and black fly larvae. 4. Remove 4"center cap from cartridge and replace with lifting cap. In some cases,the presence of petroleum hydrocarbons may interrupt the mosquito growth cycle. 5. Remove cartridge(s)from catch basin by hand or with vactor truck boom. 6. Remove accumulated sediment via vactor truck(min. Using Larvicides in the CatchBasin StormFilter clearance 13"x 24"). Larvicides should be used according to manufacturer's recommendations. 7. Remove accumulated sediment from cartridge bay. (min. clearance 9.25"x 11"). Two widely available products are Mosquito Dunks and Summit B.t.i. Briquets. For more information,visit http://www. 8. Rinse interior of both bays and vactor remaining water and summitchemical.com/mos ctrl/d efault.htm. sediment. — The larvicide must be in contact with the permanent pool.The 9. Install fresh cartridge(s)threading clockwise to pipe larvicide should also be fastened to the CatchBasin StormFilter manifold. by string or wire to prevent displacement by high flows.A 10. Replace cover and grate. magnet can be used with a steel catch basin. 11. Return original cartridges to Contech for cleaning. For more information on mosquito abatement in stormwater Media may be removed from the filter cartridges using the BMPs, refer to the following: http://www.ucmrp.ucdavis.edu/ vector truck before the cartridges are removed from the catch publications/manegingmosquitoesstormwater8125.pdf basin structure. Empty cartridges can be easily removed from the catch basin structure by hand. Empty cartridges should be reassembled and returned to Contech as appropriate. Materials required include a lifting cap,vector truck and fresh filter cartridges. Contact Contech for specifications and availability of the lifting cap.The vactor truck must be equipped with a hose capable of reaching areas of restricted clearance. the owner may refresh spent cartridges. Refreshed cartridges are also available from Contech on an exchange basis. Contact the maintenance department of Contech at 503-258-3157 for more information. Maintenance is estimated at 26 minutes of site time. For units with more than one cartridge,add approximately 5 minutes for each additional cartridge.Add travel time as required. Page 2 Y^i•D UR R A R E E www.ContechES.com/stormwater 800-338-1122 Stormwater Solutions from Contech` '.c: ©2013 Contech Engineered Solutions CONTECH® ENGINEERED SOLUTIONS MAINTENANCE CatchBasin StorrnFilterTM Important: These guidelines should be used as a part of your site stormwater plan. Overview The CatchBasin StormFilterTM (CBSF)consists of a multi-chamber Once in the cartridge chamber, polluted water ponds and steel, concrete,or plastic catch basin unit that can contain up to percolates horizontally through the media in the filter cartridges. four StormFilter cartridges.The steel CBSF is offered both as a Treated water collects in the cartridge's center tube from where it standard and as a deep unit. is directed by an under-drain manifold to the outlet pipe on the downstream side of the overflow weir and discharged. The CBSF is installed flush with the finished grade and is applicable for both constrained lot and retrofit applications. It When flows into the CBSF exceed the water quality design can also be fitted with an inlet pipe for roof leaders or similar value, excess water spills over the overflow weir, bypassing the applications. cartridge bay, and discharges to the outlet pipe. The CBSF unit treats peak water quality design flows up to 0.13 Applications cfs, coupled with an internal weir overflow capacity of 1.0 cfs for The CBSF is particularly useful where small flows are being the standard unit,and 1.8 cfs for the deep steel and concrete treated or for sites that are flat and have little available hydraulic units. Plastic units have an internal weir overflow capacity of 0.5 head to spare.The unit is ideal for applications in which cfs. standard catch basins are to be used. Both water quality and catchment issues can be resolved with the use of the CBSF. Design Operation The CBSF is installed as the primary receiver of runoff,similar Retro-Fit to a standard,grated catch basin.The steel and concrete CBSF . The retrofit market has many possible applications for the CBSE units have an H-20 rated,traffic bearing lid that allows the filter The CBSF can be installed by replacing an existing catch basin to be installed in parking lots,and for all practical purposes, without having to"chase the grade,"thus reducing the high cost takes up no land area. Plastic units can be used in landscaped of re piping the storm system. areas and for other non-traffic-bearing applications. The CBSF consists of a sumped inlet chamber and a cartridge chamber(s). Runoff enters the sumped inlet chamber either by sheet flow from a paved surface or from an inlet pipe discharging directly to the unit vault.The inlet chamber is equipped with an internal baffle,which traps debris and floating oil and grease, and an overflow weir.While in the inlet chamber, heavier solids are allowed to settle into the deep sump,while lighter solids and soluble pollutants are directed under the baffle and into the cartridge chamber through a port between the baffle and the overflow weir. Page 1 www.ContechES.com/stormwater 800-338-1122 Siormwaler Solutions from Contechr ©2013 Contech oEngineeereeredd Solutions CONTECH ENGINEERED SOLUTIONS StormFilter Inspection and Maintenance Procedures ;. _'f' mom: y l A "yy T y ° � ^r Z..._r-1 °. w '� .vr ; 7 � r f t r r —« y ti t4. '' I .g F lf ?#yr a r2r .' .i - `tie ' : ' . n f ,p I � The Stormwater Management StormFilter Maintenance Guidelines In addition to these two activities, it is important to check The primary purpose of the Stormwater Management the condition of the StormFilter unit after major storms for StormFilter'is to filter and prevent pollutants from entering our potential damage caused by high flows and for high sediment waterways.Like any effective filtration system, periodically these accumulation that may be caused by localized erosion in the pollutants must be removed to restore the StormFilter to its full drainage area.It may be necessary to adjust the inspection/ efficiency and effectiveness. maintenance schedule depending on the actual operating conditions encountered by the system.In general,inspection Maintenance requirements and frequency are dependent on the activities can be conducted at any time,and maintenance should pollutant load characteristics of each site. Maintenance activities occur, if warranted,during dryer months in late summer to early may be required in the event of a chemical spill or due to fall. excessive sediment loading from site erosion or extreme storms.It is a good practice to inspect the system after major storm events. Maintenance Frequency The primary factor for determining frequency of maintenance for Maintenance Procedures the StormFilter is sediment loading. Although there are many effective maintenance options,we believe the following procedure to be efficient, using common A properly functioning system will remove solids from water by equipment and existing maintenance protocols.The following trapping particulates in the porous structure of the filter media inside the cartridges.The flow through the system will naturally two-step procedure is recommended:: decrease as more and more particulates are trapped. Eventually 1.Inspection the flow through the cartridges will be low enough to require • Inspection of the vault interior to determine the need for replacement. It may be possible to extend the usable span of the maintenance. cartridges by removing sediment from upstream trapping devices on a routine as-needed basis,in order to prevent material from 2.Maintenance being re-suspended and discharged to the StormFilter treatment • Cartridge replacement system. • Sediment removal The average maintenance lifecycle is approximately 1-5 years. Inspection and Maintenance Timing Site conditions greatly influence maintenance requirements. At least one scheduled inspection should take place per year with StormFilter units located in areas with erosion or active maintenance following as warranted. construction may need to be inspected and maintained more often than those with fully stabilized surface conditions. First,an inspection should be done before the winter season. During the inspection the need for maintenance should be Regulatory requirements or a chemical spill can shift maintenance determined and, if disposal during maintenance will be required, timing as well.The maintenance frequency may be adjusted as samples of the accumulated sediments and media should be additional monitoring information becomes available during the obtained. inspection program.Areas that develop known problems should be inspected more frequently than areas that demonstrate no Second,if warranted,a maintenance(replacement of the filter problems,particularly after major storms. Ultimately,inspection cartridges and removal of accumulated sediments)should be and maintenance activities should be scheduled based on the performed during periods of dry weather. historic records and characteristics of an individual StormFilter system or site. It is recommended that the site owner develop a database to properly manage StormFilter inspection and maintenance programs.. jec r, -, `iacf k- ' AnA*, 'k'+ (, , - ,8. ,, Lit - ' @ .1i 5.''.'.:-.:'!:-';':::'''''''',7t1.'9:" ke !: ,.±q?t+t may. 41-:4 ,, i� Atm a } .. # >-'^... 'ti r e s* 2 Maintenance Decision Tree • _' t The need for maintenance is typically based on results of the , ` ms's. inspection. The following Maintenance Decision Tree should be used as a general guide.(Other factors,such as Regulatory Requirements,may need to be considered) • 1. Sediment loading on the vault floor. a. If>4"of accumulated sediment,maintenance is required 2. Sediment loading on top of the cartridge. • a. If>1/4"of accumulation,maintenance is required. � q 3. Submerged cartridges. a. If>4"of static water above cartridge bottom for more than 24 hours after end of rain event, maintenance is required.(Catch basins have standing water in the cartridge bay.) Inspection Procedures 4. Plugged media. The primary goal of an inspection is to assess the condition of a. If pore space between media granules is absent, the cartridges relative to the level of visual sediment loading as maintenance is required. it relates to decreased treatment capacity.It may be desirable to conduct this inspection during a storm to observe the relative 5. Bypass condition. flow through the filter cartridges. If the submerged cartridges a. If inspection is conducted during an average rain fall are severely plugged,then typically large amounts of sediments event and StormFilter remains in bypass condition will be present and very little flow will be discharged from the (water over the internal outlet baffle wall or submerged drainage pipes.If this is the case,then maintenance is warranted cartridges),maintenance is required. and the cartridges need to be replaced. 6. Hazardous material release. Warning: In the case of a spill,the worker should abort a. If hazardous material release(automotive fluids or other) inspection activities until the proper guidance is obtained. is reported, maintenance is required. Notify the local hazard control agency and Contech Engineered Solutions immediately. 7. Pronounced scum line. a. If pronounced scum line(say>_ 1/4"thick)is present To conduct an inspection: above top cap,maintenance is required. important: Inspection should be performed by a person who is familiar with the operation and configuration of the StormFilter treatment unit. 1. If applicable,set up safety equipment to protect and notify surrounding vehicle and pedestrian traffic. 2. Visually inspect the external condition of the unit and take 14,1 • fi,. L M notes concerning defects/problems. w 3. Open the access portals to the vault and allow the system _ vent. {: • 4. Without entering the vault,visually inspect the inside of the unit,and note accumulations of liquids and solids. 5. Be sure to record the level of sediment build-up on the floor of the vault,in the forebay,and on top of the cartridges.If flow is occurring,note the flow of water per drainage pipe. Record all observations.Digital pictures are valuable for , historical documentation. f • 6. Close and fasten the access portals. 7. Remove safety equipment. �r a 8. If appropriate,make notes about the local drainage area relative to ongoing construction,erosion problems,or high loading of other materials to the system. 9. Discuss conditions that suggest maintenance and make decision as to weather or not maintenance is needed. 3 Maintenance ► ` ` Depending on the configuration of the particular system, maintenance personnel will be required to enter the vault to , perform the maintenance. fa 4 Important:If vault entry is required,OSHA rules for confined kx �, space entry must be followed. - - - q t 9replacementduringdry Filter cartridge should occur weather. , � It may be necessary to plug the filter inlet pipe if base flows is >' 1: �� occurring. Replacement cartridges can be delivered to the site or customers facility.Information concerning how to obtain the replacement cartridges is available from Contech Engineered Solutions. .l, _ { { Warning:In the case of a spill,the maintenance personnelrte � ��1 �, a, , should abort maintenance activities Until the proper guidance R ; � �` � _ r is obtained.Notify the local hazard control agency and ,- Contech Engineered Solutions immediately. ^ � To conduct cartridge replacement and sediment removal maintenance: �t '� - `� 1. If applicable,set up safety equipment to protect maintenance "^ � v $w ti s personnel and pedestrians from site hazards. • 2. Visually inspect the external condition of the unit and take notes concerning defects/problems. 3. Open the doors(access portals)to the vault and allow the system to vent. 4. Without entering the vault,give the inside of the unit, Important:Care-must be used to avoid damaging the including components,a general condition inspection. cartridges during removaland,installation.:The cost of 5. Make notes about the external and internal condition of repairing component damaged duringmaintenance.wlll be the vault.Give particular attention to recording the level of the responsibility of the owner. sediment build-up on the floor of the vault,in the forebay, C. Set the used cartridge aside or load onto the hauling and on top of the internal components. truck. 6. Using appropriate equipment offload the replacement cartridges(up to 150 lbs.each)and set aside. D. Continue steps a through c until all cartridges have been 7. Remove used cartridges from the vault using one of the removed. following methods: Method 2: Method 1; A. This activity will require that maintenance personnel enter A. This activity will require that maintenance personnel enter the vault to remove the cartridges from the under drain the vault to remove the cartridges from the under drain manifold and place them under the vault opening for manifold and place them under the vault opening for lifting(removal). Disconnect each filter cartridge from the lifting(removal). Disconnect each filter cartridge from the underdrain connector by rotating counterclockwise 1/4 of underdrain connector by rotating counterclockwise 1/4 of a turn. Roll the loose cartridge,on edge,to a convenient a turn. Roll the loose cartridge,on edge,to a convenient spot beneath the vault access. spot beneath the vault access. B. Unscrew the cartridge cap. Using appropriate hoisting equipment,attach a cable C. Remove the cartridge hood and float. from the boom,crane,or tripod to the loose cartridge. Contact Contech Engineered Solutions for suggested D. At location under structure access,tip the cartridge on its attachment devices. side. B, Remove the used cartridges(up to 250 lbs.each)from the E. Empty the cartridge onto the vault floor.Reassemble the vault. empty cartridge. F. Set the empty, used cartridge aside or load onto the hauling truck. G. Continue steps a through e until all cartridges have been removed. 4 8. Remove accumulated sediment from the floor of the Material Disposal vault and from the forebay.This can most effectively be The accumulated sediment found in stormwater treatment accomplished by use of a vacuum truck. and conveyance systems must be handled and disposed of in 9. Once the sediments are removed,assess the condition of the accordance with regulatory protocols. It is possible for sediments vault and the condition of the connectors. to contain measurable concentrations of heavy metals and 10.Using the vacuum truck boom,crane,or tripod, lower and organic chemicals(such as pesticides and petroleum products). install the new cartridges.Once again,take care not to Areas with the greatest potential for high pollutant loading damage connections. include industrial areas and heavily traveled roads. 11.Close and fasten the door. Sediments and water must be disposed of in accordance with 12.Remove safety equipment. all applicable waste disposal regulations.When scheduling 13.Finally,dispose of the accumulated materials in accordance maintenance,consideration must be made for the disposal of with applicable regulations. Make arrangements to return the solid and liquid wastes.This typically requires coordination with used empty cartridges to Contech Engineered Solutions. a local landfill for solid waste disposal.For liquid waste disposal a number of options are available including a municipal vacuum truck decant facility, local waste water treatment plant or on-site treatment and discharge. Related Maintenance Activities - Performed on an as-needed basis '` .. Storm Filter units are often just one of many structures in a more � R 7; ` �i : � comprehensive stormwater drainage and treatment system. l`f;`t0a ' , f3 ^ �,•.,,, . In order for maintenance of the StormFilter to be successful,it is imperative that all other components be properly maintained. The maintenance/repair of upstream facilities should be carried •_• out prior to StormFilter maintenance activities. € ,3 �`• 9 In addition to considering upstream facilities,it is also important c „� , to correct any problems identified in the drainage area. Drainage ''� , area concerns may include:erosion problems, heavy oil loading, 4� •r y �c� sr, e , and discharges of inappropriate materials. r ` a xa _� r ,-4.4,,,,':,,'R,,,44,41,6, ---':',..4-.'x r * ,(rte c'. n„k{ ,73 i ms's yf i c • 6' f""`.`... C. Lam, ,, �b, '� *4- E " g�e , , ri 4! , 1111 ' ' �� 3 ''''''. '*1r lie w *11' e4tr'V >, , tea;. ,,,,,,_.,f ';.f ,.,�t' . �t ,, `� -�"tr "tt3'� ', `>6.t„.xx 5 Inspection Report Date: Personnel: Location: System Size: System Type: Vault ❑ Cast-In-Place ❑ Linear Catch Basin ❑ Manhole ❑ Other ❑ Date: Sediment Thickness in Forebay: Sediment Depth on Vault Floor: Structural Damage: Estimated Flow from Drainage Pipes(if available): Cartridges Submerged: Yes ❑ No ❑ Depth of Standing Water: StormFilter Maintenance Activities(check off if done and give description) ❑ Trash and Debris Removal: ❑ Minor Structural Repairs: ❑ Drainage Area Report Excessive Oil Loading: Yes ❑ No ❑ Source: Sediment Accumulation on Pavement: Yes ❑ No ❑ Source: Erosion of Landscaped Areas: Yes ❑ No ❑ Source: Items Needing Further Work: Owners should contact the local public works department and inquire about how the department disposes of their street waste residuals. Other Comments: Review the condition reports from the previous inspection visits. Stornii ter aintenance Report Date: Personnel: Location: System Size: System Type: Vault❑ Cast-In-Place ❑ Linear Catch Basin ❑ Manhole E Other ❑ List Safety Procedures and Equipment Used: System Observations Months in Service: Oil in Forebay(if present): Yes ❑ No ❑ Sediment Depth in Forebay(if present): Sediment Depth on Vault Floor: Structural Damage: Drainage Area Report Excessive Oil Loading: Yes ❑ No ❑ Source: Sediment Accumulation on Pavement: Yes ❑ No ❑ Source: Erosion of Landscaped Areas: Yes ❑ No ❑ Source: StormFilter Cartridge Replacement Maintenance Activities Remove Trash and Debris:. Yes ❑ No ❑ Details: Replace Cartridges: Yes ❑ No ❑ Details: Sediment Removed: Yes ❑ No ❑ Details: Quantity of Sediment Removed(estimate?): Minor Structural Repairs: Yes ❑ No ❑ Details: Residuals(debris,sediment) Disposal Methods: Notes: 1 ®9 p �RECYCLED, T .. W PAPER O NTECIE ENGINEERED SOLUTIONS ©2016 CONTECH ENGINEERED SOLUTIONS LLC. 800-338-1122 www.ContechES.com Alf Rights Reserved. Printed in the USA. Contech Engineered Solutions LLC provides site solutions for the civil engineering industry.Contech's portfolio includes bridges, drainage,sanitary sewer,stormwater and earth stabilization products.For information on other Contech division offerings,visit contech-cpi.com or call 800.338.1122. Support • Drawings and specifications are available at www.conteches.com. • Site-specific design support is available from our engineers. NOTHING IN THIS CATALOG SHOULD BE CONSTRUED AS AN EXPRESSED WARRANTY OR AN IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR AN Y PARTICULAR PURPOSE.SEE THE CONTECH STANDARD CONDITIONS OF SALE(VIEWABLE AT WCONTECHES.COM/COS)FOR MORE INFORMATION WW. . 800.338.1122 .conteches.com StormFilter Inspection and Maintenance Procedures 8/2016 www . . „ . Flow.Through Planter Operation and MaintPlan Annual inspections are,required,, .Itbs lec,,:mai.,gm, „0, :,,,,tiiit, -theflai*is-irjip„etted.Orta-MOJittr!basis to ensure proper f.unctIon.The plan below describes 7--0,k4 inspection and'maintenance-activities,and Maybe used as'an inspectionlog.tontatithe design engineer,Clean Water Services or City representative for more informatiOni. •,,,,,...; , . ,- ',•,:,),,,' ...,,_.:_.=,--.... , ,,::-„, -..Aff-tv:;:i-g=i-k-ev..:,A---,-,=16 -',ii-1-.:,,,,,--;=,,:,,,,,,,,i.,•,,,--. ,.-i,-,, -.-.,,---,,,,.,.,=,-- ,, ,-, „„--,..,...„.,, Identified Problem Condition to Check for 1 Maintenance Activity Maintenance Timing V'Task Complete Comments ... .. .,',-„„.-1',,, „ , „ . .-_,-„,V,:„.!:."-,.. $ttidittiedAtOrTfUliffeffiff 1 ''', --01t1ifelifdePttvtileck-00*: '--:ft' l' ;;•'- 0,''V!tifTn_l!11,17!1-- ,,, Treatnient Area- ' ' -. areaAnSirreplenterts levet front side to side and drains freelitoweil summsk PAL otitle4infrstanding water Wi*iiit 24: floret_afterany major storm,,O4ritiiitr, ', -Ideakiadry-seasOn 24 hours) — - -- -, - 9 'L. Erosion , „,„.,.. .. Erosion or thannelkation that impacts , Repair eroded atas-anci,;stabilized ,,-Or4i1ects the function t)f-thE4A'ditty ot..,.„-1:using proper erosion control me-- ,--,,,-,,, 5:,- FALL WINtER 50*Rthid ta) , r.. , •;ieateSgItlfetY140certi, ''' - sures Establish appropriate vegetatirA '' as needed inspett after majoritorm 4.- .. -:, , „ „•,... ,.. , : fl41drii24-hotitsi m, . --,,, .„,„„ Po ! Standing Water :stir*IlAotarktileOlantepi*tvireen:2„ :!---,fierndgcrar4tiktr-,:y0tilliFF-P9 ..‘ = atitwaStitatdoet.ti4dMiili14$1, 4A--ittr,a :O.tmo-t-rniltt0-#11(1-',„ 0 . ' * , Water should drain after 24 hours of i',imPrOve end toerid grade , LC, al- ' dry weather. H no 4404111,4=wMan SMUGateri' - - — .,,• , ..•,,, -= -,,„,..... , •• . . , . . „, „ _ nA flow_Nnt'Distributed :'.Flow ono,teniyOt 44140091i- :; 4*.,):A00,HisP-raiida„.,f0d tre....at1 so „ - ,__,- to- , -, ... plantOliiitithdittittlmevait-Or,„- :„;---fthat-40,10prea4z„'everliyoviloptira„, :;..: *lb, .. - 411‘;',- dogged flow spreader-- „ ' ' pia riter4ridth-,, ' -,: , „2 ;',', * ilo ir.,'Nd • obstructedirdetigetWt Material such aslie9glatiOni. edrinerii* '„,- Rernoy bJockes,from 1adtlty- trasivia,biocking.mate than tOotti_of o. the inlet/outlet pips , , N xlifiltia , - 2 Inspect aftermajor storm (t,initip24 bole) Flow-Through Planter Operation and Maintenance Plan (continued) Annual inspections are required.It is recommended that the facility is inspected on a monthly basis to ensure proper function.The plan below describes • • inspection and maintenance activities,and may be used as an inspection log.Contact the design engineer,Clean Water Services or City representative for more information, Identified Problem Condition to Check for Maintenance Activity Maintenance Timing Task Complete Comments -r7 t 4 , Poor Vegetation Coverage 80%survival of approved vegetation Determine cause of poor growth and 74t.''and no no bare areas large enough to correct the condition*,replant with affect function of facility, plugs or containerized plant per ap- SPRING EAU_ proved plans and applicable standards Ideal time to plant is spring and 0., at time of construction.Remove ex- fall seasons cessive weeds and all invasive plants., Invasive Vegetation as Invasive vegetation found in facility. Remove excessive weeds and all 2, outlined in Appendix A Examples include:Himalayan Blackber- invasive plants.Attempt to control ry;Reed Canary Grass;Teasef, even if complete eradication is not SPRING SUMMER PAU. CP English Ivy,Nightshade,Clematis, feasible Refer to Clean Water Services -Q Cattail,Thistle Integrated Pest Management Plan for appropriate control methods,includ- ing proper use of chemical treatment. Excessive Vegetation Vegetation grows so tall it competes Prune over-hanging limbs,if possible; with or shades approved emergent remove brushy vegetation as needert semi,* wetland grass/shrubs;interferes with Prune emergent wetland grass/shrubs Ideal time to prune emergent access or becomes a fire danger that have become overgrown. wetland grass is spring Vector Control Evidence of rodents or water flowing Repair damage to facility. Remove As Needed through facility via rodent holes.Harm- harmful insects,call professional if ful insects such as wasps or hornets needed.Refer to Clean Water Services present Integrated Pest Management Plan for c-) ET management options. I !-S4. )dI_ ThohParOer4adfefttireon Atinuatinttitetiont.arequiredltlirecotnrrrended tha �t ���l tyis r���� a� nthiy f �erSurpray r�trttitt Th plan below describes �# inspeetiar and ttrafr tenance attivltles,and may be used as art it s 'cd on 10 nta he•design erlgir eer, lean Water Services or City representative for • •,,, •ormatlnn Identified ProblemProblemConditionitian to Check for Maintenance Activity Maintenance Timing V Task Comp e"e omments Trash and Debris sr`al evtdenO.O t as ,detirts.or ariltiOtVgd4ispo$0 fTe and del r dum in"_ bra'faicility i)spO5a' taroperly N " Rots. 'sUM,Mr`lt FALL WINTER • • Contamtnat(on and O rdence of otll gasoline toratamrnattt r gor tnYnanis or utarris preser►t, • hollutiorr orotherpoltut� ttrot4 ,&tIha�1emoYaeatYt,p:�vtifttocat _ '� • v odor or signs of ontaininafro, Itirtsdiction, WINTIR • Outlet Structure Damaged Grate or oVerOnsV strOdure is missing aepai'Or reptate'outiet strttctUre.. As Needed or only partiallyIn place and may have missing orbrokengrate members, (0 • CP • • u_I C l 2 ... Vegetated Filter Strip Operation and Maintenance Plan , ,AR Annual inspections are required.it is recommended that the facility is inspected on a monthly basis to ensure proper function,The plan below describes -94‘ inspection and maintenance activities,and may be used as an inspection log.Contact the design engineer,Clean Water Services or City representative for g. more information. 0 Identified Problem Condition to Check for Maintenance Activity Maintenance Timing V Task Complete Comments Flow not distributed evenly Flows unevenly distributed through Level and clean the spreader so that filter strip due to uneven or clogged flows spread evenly over entire filter • -C1 flow spreader strip width WINTER SPRING :C. Invasive Vegetation as Invasive vegetation is found in facility. Remove excessive weeds and all t.i outlined in Appendix A Examples include:Himalayan Blackberry; invasive plants.Attempt to control Reed Canary Grass;Teasel; even if complete eradication is not SPRMG SUMMER FALL .0 English Ivy;Nightshade;Clematis; feasible,Refer to Clean Water Services itt = Cattail Thistle;Scotch Broom integrated Pest Management Plan for appropriate control methods,including , proper use of chemical treatment. ...- --,--.' _ --, Poor Vegetation Coverage 80%survival of approved vegetation Determine cause of poor growth El = and no bare areas large enough to and correct the condition;replant -VJ LCD rt' affect function of facility, with plugs or containerized plants FALL SPRING =1 i-P- per approved plans and applicable :-, standards at time of construction. Ideal time to plant is Spring and .70. Remove excessive weeds and all Fall seasons Lo tt, invasive plants :73 1 Excessive Vegetation Vegetation grows so tall it competes Cut grass tall grass 4"to 6"and -o "0 with or shades approved emergent remove clippings.Prune emergent ,-, SPRING 75 wetland grass/shrubs;interferes with wetland grass/shrubs that have Ideal time to prune emergent Cl access or becomes a fire danger become overgrown. wetland grass is Spring.Cut c-... grass In dry months Tree/Shrub Growth Tree/shrub growth shades out Prune trees and shrubs that block sun wetland/emergent grass in treatment from reaching treatment area.Remove area.interferes with access for trees that block access points. WINTER maintenance/inspection Do not remove trees that are not ideal timing for pruning trees is interfering with access or maintenance winter without first contacting Clean Water un Services or local City. ,t, ,..„ Vegetated Filter Strip Operation and Maintenance Plan (continued) Annual inspections are required.It is recommended that the facility is inspected on a monthly basis to ensure proper function.The plan below describes inspection and maintenance activities,and may be used as an inspection log.Contact the design engineer,Clean Water Services or City representative for more information. Identified Problem Condition to Check for Maintenance Activity Maintenance Timing v'Task Conti)lete Comments ,-;.- Erosion Erosion or channelization that impacts Repair eroded areas and stabilize using or effects the function of the facility or proper erosion control measures. 7ri creates a safety concern Establish appropriate vegetation as FALL WINTER SPRING needed _H- -,-,-- "..11 QJ -r2-.- Sediment Accumulation in Sediment depth in treatment area Remove sediment from treatment _-4- --•,,,;:. ---- Treatment Area exceeds 3 inches area, Ensure facility is level from side to side and drains freely toward SUMMER FALL = CI outlet;no standing water once inflow Ideally in the dry season ,..0 Frl has ceased 5 -0 Trash and Debris Visual evidence of trash,debris or Remove trash and debris from facility. 9,1 dumping Dispose of properly 4 , .., -t..,--=^/ SPRING SUMMER FALL WINTER ,.„.., — .— -"----"" '5,1),. = Contaminants and Evidence of oil,gasoline,contaminants If contaminants or pollutants present; —...t. m Pollution or other pollutants.Look for sheens, coordinate removal/cleanup with local * t--_ E odor or signs of contamination jurisdiction SPRING SUMMER FALL WINTER, ra 1 , . Vector Control Evidence of rodents or water piping Repair facility if damaged.Remove As Needed through facility via rodent holes. harmful insects,use professional Harmful insects present such as wasps sentice if needed. and hornets that interfere with Inainte- Refer to Clean Water Services g nance/inspection activities Integrated Pest Management Plan for management options 5 . a Water Quality Manlole Operation and Mahntenance P1an ' _ Annual:intspections,are required.The plan:below describes'maintenance and inspection activities and may be used as.an inspection log.Contact the design engineer Clean Water,Services or;-City representative for more information Identified Problem Condition to Check for Maintenance Activity Inspection Frequency V Task Complete Comments Trash,Debris and Sediment '.`Miaterial:exceedss50%ofsiimp depth Remove material soTee or`Snout isMonthly from November _orone"lootbeldw"the>Tee orSnout. notblockedr=, _. - . throughApril , . v Afinualiy•Required `° Tee,tee plugor Snout -Teettee plug,or�snoutmiSSing Rep lace missing components; . Annually Required.- Missing , ., . Structural Damage to Tee Tee or Snout isnot securely.attached Repairlee,or Snout so that itis '- . Annually Required v or Snout. to�rnanhole wali� securely-attached_to wall and,outlet • pipe. v Manhole structure:not in, Manhole.structure is not upright:_ .Ensure manhole structure is in correct Annually Required- 5 correct,position ' (allow up to 10%from:plumb) position,rrltdst meet design tanards '.. h Structural Damage connections to outlet pipe are not' Repaired or replace damaged ` Annually°Requiredco D watertight. connections;;o outlet''pipe to,ensure they are Watertight;Structure.frtust Workas designed' o c, Structural Damage Darnage;from holes in the structure Repair holes( except:as designed) . Annually Required ' ••(otherthan designed) Locking;mechanismvnot Manhole.cover cannotbe opened by Repair or-replace mechanism so Annually Required_ working on Manhole cover ,one.maintenance person with proper `,manhole cover opens with proper tools tools:bolts into framehave'iest.than-. ' - 'h'it ch of thread(may not apply to<< " - self-locking lids).- - rn , Water Quality Manhole Operation and Maintenance Plan (conti• nued) Annual inspections are required.The plan below describes maintenance and inspection activities and may be used as an inspection log.Contact the design engineer, Clean Water Services or City representative for more Information Identified Problem Condition to Check for Maintenance Activity Inspection Frequency ; V Task Complete Comments Manhole Cover Not in Cover is missing or only partially ih Repair or replace cover.Any open Annually Required rD t Place place manhole needs maintenance immediately Manhole Cover Difficult to One maintenance person cannot remove Cover can be removed by one Annually Required Remove lid using normal lifting pressure;cover maintenance person makes access for maintenance difficult Ladder Rungs Unsafe Maintenance person determines ladder Repair or replace ladder to meet Annually Required t is unsafe(missing rungs,misalignment, design standards and allow for safe rust,cracks);laddermust be repaired access for maintenance or secured immediately ca 3 O• G") Q rA C 2 Porous Pavement Operation and Maintenance Plan Annual inspections are required. It is recommended that the facility is inspected on a monthly basis to ensure proper function.The plan below describes inspection and maintenance activities,and may be used as an inspection log.Contact the design engineer,Clean Water Services or City representative for more information. Identified Problem Condition to Check for Maintenance Activity Maintenance Timing V Task Complete Comments Surface is Clogged Water infiltrates unevenly across Recommend vacuumsweep at least surface or ponds in low areas twice per year,if pavement surface has become significantly clogged SUMMER :ALL use low pressure washer to restore permeability;do not use surfactants Cracked or moving edge Cracked or moving edge constraints, Repair all cracks,settlement or other As Needed constraints;cracked or cracked or settled pavement that of defects that affect performance of settled pavement fects overall performance of stormwa structural components.Refer to ter structural components manufacturers'specifications Leaf,soil deposition on Leaf litter that could affect storrnwwater Sweep leaf litter and sediment to surface infiltration through pavement.Look prevent surface clogging and ponding. for soil washout from adjacent planted Planted areas adjacent to porous mu, WItNTEfi areas pavement should be well maintained During leaf season.As needed to prevent soil washout onto the pavement Excessive weeds Weeds cover 100%of the surface area Remove weeds by hand,or use an herbicide approved for use around sensitive areas;refer to Clean Water SPRING SUMMER EAUL Services integrated Pest Management During the growing season Plan forappropriate control methods, including proper use of chemical treatment Settling of pavers or lack of <Filter medium between pavers re- Reset pavers and replace pore space As Needed aggregate around pavers duced.Aggregate loss in pavers from with aggregate from original design settling and powerwashing ncA. Visual evidence of trash, Any debris or trash that could clog the Remove trash or debris and vacuum As Needed debris or dumping surface sweep area if necessary