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HomeMy WebLinkAbout20141124000995 STORM WATER EASEMENT AND MAINT AGREEMENT 11/18/2013i5fi [)w\ vAl6o 7;q /I17�0 Return Address: Ill SIIINGTON ST lnl �, 3(v -Z1_q 0102 ER'S Cover Sheet Please print or type mformanon Document Title(s) (or transactions contained therein): (all areas applicable to your document must be filled in) Reference Number(s) of Documents assigned or released: Additional reference WS on page - of document Grantor(s) Exactly as name(s) appear on document 1. O' Re it lU NQiQMC MP- Additional names on page of document. Grantees) Exactly aass namc(s) appear on document Pmobif n, 2. Additional names on page of document. Legal description (abbreviated: i.e. lot, block, plat or section, township, range) K -, iini <3c3 'f Al N - Rs{ Additional legal is on page _ of document. Assessor's Property Tax Parcel /Account Number assigned Qi'_•% Inl f C1Ir� The Auditor /Recorder Will rely on the information provided on to verifv the accuracy or completeness of the indexing informal ❑ Assessor Tax 11 not yet form. The staff will not read the document provided herein. "I am signing below and paying an additional 550 recording fee (as provided in RCW 36.18.010 and referred to as an emergency nonstandard document), because this document does not meet margin and formatting requirements. Furthermore, I hereby understand that the recording process may cover up or otherwise obscure some part of the text of the original document as a result of this request." of Requesting Patty to submiticr: Do not sign above no aJ ditimtal S50 fee if the document meets %.RICAN zkA \m Return Address: City of Auburn City Clerk 25 West Main Auburn, WA 98001 ftL� . ri ds Uivisiun BY _Uelwly Above this line reserved for recording information. STORM WATER EASEMENT AND MAINTENANCE AGREEMENT GRA12 -0010 Reference # (if applicable): N/A Grantor/Borrower: O'Reilly Automotive Stores, Inc. Grantee /Assignee /Beneficiary: City of Auburn Legal Description /STR: NE' /4536— T21N —R4E Assessor's Tax Parcel ID #: 362104 -9102 THI EASEMENT AND AGREEMENT made and entered into this AL day of r , 2013, by and between the City of Auburn, a municipal corporation of King County, Washington, hereinafter referred to as "CITY" and O'Reilly Automotive Stores, Inc. hereinafter referred to as "PROPERTY OWNER ". WHEREAS, PROPERTY OWNER has applied for certain permits with the CITY for the construction of facilities for O'Reilly #3 located at 4227 A Street SE, which create impervious surface; and WHEREAS, the PROPERTY OWNER will complete a storm system; and WHEREAS, the PROPERTY OWNER and the CITY desire that the storm system be maintained to provide adequate facilities for controlling both the quantity and quality of storm drainage; and WHEREAS, for maintenance of a storm system it is necessary to have appropriate right -of -way to bring in equipment to conduct maintenance functions; and WHEREAS, maintenance requirement is a covenant running with the land and binding upon all heirs, successors and assigns of both parties; and WHEREAS, the parties desire that this Agreement be recorded to advise heirs, successors and assigns of both parties as to the existence of this easement and agreement; and Said documents were filed if Storm Water Easement and Maintenance Agreement record as an accommodation oniv. Page I of 18 N. ha. net tsuen exammod at io proper execution or as to its eff" upon title. WHEREAS, an easement is needed to bring in maintenance equipment; and WHEREAS, the parties are both desirous of permitting inspection of the storm system to make certain that it is functioning properly and for purposes of determining the appropriate repairs. NOW, THEREFORE, BASED UPON MUTUAL COVENANTS TO BE DERIVED THE PARTIES AGREE AS FOLLOWS: Section 1, EASEMENT PROPERTY OWNER hereby provides a non - exclusive easement to the City for access, inspection, and maintenance for the purposes of this Agreement and the attached Storm Water Pollution Prevention Plan, over, under and on that real estate described in Exhibit "A" & `B" and on that portion of the property as showing on the approved Record Drawings revised pursuant to construction records for the City of Auburn under Permit No. GRA12 -0010, which record drawings are hereby incorporated by reference as if set out in full. This easement shall be a burden to that real estate which is legally described and attached as Exhibit "A" & `B" and incorporated herein by this reference, and shall be a benefit to the City Storm Drainage Utility System. parties. Section 2, HEIRS, SUCCESSORS AND ASSIGNS This Agreement shall be binding upon the heirs, successors and assigns of the Section 3, MAINTENANCE The PROPERTY OWNER agrees to maintain the storm system in accordance with the ordinances and all applicable codes of the CITY and the Storm Water Pollution Prevention Maintenance and Operation Schedule attached as Exhibit "C" and incorporated herein by this reference. The PROPERTY OWNER does hereby agree that the CITY may enter onto the property of the PROPERTY OWNER via the easement described above to inspect and perform necessary maintenance if, after the PROPERTY OWNER is given notice to maintain, the PROPERTY OWNER fails to maintain. Further, the PROPERTY OWNER agrees the CITY may enter onto the property of PROPERTY OWNER via the easement described above to perform emergency maintenance in the event of the storm system's failure which might result in adverse impacts(s) on public facilities or private facilities of other property owners. In both events the PROPERTY OWNER agrees to reimburse the CITY for the costs incurred by the CITY in maintaining the storm system. Should the CITY incur attorney's fees and/or costs in enforcing the agreement and/or in maintaining or collecting maintenance fees, the PROPERTY OWNER agrees to pay reasonable attorney's fees and all costs incurred by the CITY. Storm Water Easement and Maintenance Agreement Page 2 of 18 Section 4, ACKNOWLEDGMENT OF OTHER ENFORCEMENT ACTIONS PROPERTY OWNER acknowledges that there may be liability for violations of codes that could result in additional fines and/or the possibility of incarceration in addition to the fees for maintenance should violations occur. EXECUTED as of the date first written above. 71114lty Owner UA`Si!EoLt� STATE OF WASnRIGTON -) C,Y fAkg . ) ss COUNTY OF KD4G ) i t atte 4";UO'A1 -ts in-zq, Date >cS�Atc- �t.c. I c tfv that I know or have satisfactory evidence that SC-04 k- Yat�� V10 df GQ L tax and / is /are the person(s) who appeared before me, and said individual(s) acknowledged that he /she /they signed this instrument and acknowledged it to be his/her /their free and voluntary act for the uses and purposes mentioned in this instrument. Dated Notary Public in d for Residing at ckrl 5 My appointment expires Storm Water Easement and Maintenance Agreement Page 3 of 18 ELIZABETH A. DUG f;EF Notary PuGI'r„ State of M14, our Qomnssion Christian County Commission #10398753 Expires June 25, 201 Notary Public in d for Residing at ckrl 5 My appointment expires Storm Water Easement and Maintenance Agreement Page 3 of 18 CITY OF AUBURN m Carlaw, Storm Drainage Engineer Date STATE OF WASHINGTON) )ss. COUNTY OF KING ) I certify that I know or have satisfactory evidence that Tim Carlaw is the person who appeared before me, and said person acknowledged that he signed this instrument, on oath stated that he was authorized to execute the instrument and acknowledged it as the STORM DRAINAGE ENGINEER of THE CITY OF AUBURN to be the free and voluntary act of such party for the uses and purposes mentioned in this instrument. Dated t 1 4) / t P�_,.aaauup� N �i�i � F� zip � y Notary Public and for the S to of C Residing at My appointment expires t t t iy1 OR uuesN����'� HS /tlb File: 91340 REF. H: \DEVELOPMENT\Projects \O'Reilly Auto Parts 3 \GRA12- 0010 \Legal Documents\2013 Storm Water Easement and Maintenance Agreement Page 4 of 18 EXHIBIT "A" O'REILLY AUTO PARTS STORE AUBURN, WA #3 THAT PORTION OF THE NORTHEAST QUARTER OF THE NORTHEAST QUARTER OF SECTION 36, TOWNSHIP 21 NORTH, RANGE 4 EAST, WILLAMETTE MERIDIAN, KING COUNTY, WASHINGTON, BEING MORE PARTICULARLY DESCRIBED AS FOLLOWS: BEGINNING AT THE SOUTHEAST CORNER OF LOT 2 OF THE CITY OF AUBURN SHORT PLAT NUMBER SPL -04 -0004, AS RECORDED UNDER RECORDING NUMBER 20050203000175, RECORDS OF KING COUNTY, WASHINGTON; THENCE NORTH 89 033'05" WEST A DISTANCE OF 254.63 FEET TO THE SOUTHWEST CORNER OF LOT 2 OF SAID SHORT PLAT; THENCE NORTH 01 *10'09" WEST A DISTANCE OF 140.06 FEET TO THE NORTHWEST CORNER OF LOT 2 OF SAID SHORT PLAT; THENCE SOUTH 89 °33'05" EAST A DISTANCE OF 260.64 FEET TO THE NORTHEAST CORNER OF LOT 2 OF SAID SHORT PLAT; THENCE SOUTH 01 °17'16" WEST A DISTANCE OF 140.01 FEET TO THE POINT OF BEGINNING. SAID PARCEL CONTAINING 36,069 SQUARE FEET OR 0.828 ACRES, MORE OR LESS. SUBJECT TO EASEMENTS, RESTRICTIONS, RESERVATIONS AND CONDITIONS OF RECORD. BASIS OF BEARINGS IS BASED UPON KING COUNTY DEPARTMENT OF PUBLIC WORKS SURVEY CONTROL POINTS 6901 (NE QUARTER SECTION 36) AND 6902 (NORTH QUARTER CORNER SECTION 36). HELD PUBLISHED BEARING OF N89 °33'05 "W BETWEEN SAID POINTS. CONTROL POINT INFORMATION PROVIDED BY THE WASHINGTON COUNCIL OF COUNTY SURVEYORS (WCCS). MO ANDERSON �� (-ENGINEERING ,1N _ ENGINEERS• SURVEYORS•.AfI MTORIES• DRILLING aolMRWNCwcnew xi1.,� 1, ssmr K. I�nleeezi„ xou,�nsox cou mu . au,��.uwsi se..sos5 4 -13 O'REILLY AUTOMOTIVE STORES, INC. SHEET NUMBER O'REILLY AUTO PARTS STORE 1 SITE LEGAL DESCRIPTION OF 1 4227 A STREET SE DATE' 054(.13 AUBURN, WA #3 O ODYgO1T AIOfR501 OIdIFWIQ NG ]01] MO ANDERSON �� (-ENGINEERING ,1N _ ENGINEERS• SURVEYORS•.AfI MTORIES• DRILLING aolMRWNCwcnew xi1.,� 1, ssmr K. I�nleeezi„ xou,�nsox cou mu . au,��.uwsi se..sos5 4 -13 19 STORMTECH- SC -740 CHAMBERS (INFILTRATION) I� 1 1 -f 11 ji � a j EXHIBIT "B" O'REILLY AUTO PARTS STORE AUBURN, WA #3 INLET #1 J N89'3 3 INLET #2 /STORMFILTER UNIT. LOT 1 pttaw .0 sNGBr PLaT NO S8f301�E 260.64 mI ®I . Imle� O lolol� DEALER EGRESS DOGR DOOR O'Reilly Auto Pads W9 xwW ' 0 fiT -2.A1 (YE x RDILDUG) Fw FL4 EL. =5209 I� 5"W 254.63— INLET #3 /OVERFLOW STRUCTURE INLET #4 NORTH SCALE: 1 -40' MO ANDERSON rA� C--ENGINEERING,INC _ ENGINEERS • SURVEYORS - LIBORATOR ES • DRILLING MS W_ 67 ND•SPAINGFIED. NI5SpPo -PXONE I411I �JT•1 �L NxCEN50N C0.1 /3U] � 1EHGEL, PE9•U&5 u e' JMIDI 1014 -13PJE NB-109-465 O'REILLY AUTOMOTIVE STORES, INC. SHEET NUMBER O'REILLY AUTO PARTS STORE SITE PLAN OF 1 4227 A STREET SE DATE: 0541613 AUBURN, WA #3 0 =3 INLET #3 /OVERFLOW STRUCTURE INLET #4 NORTH SCALE: 1 -40' MO ANDERSON rA� C--ENGINEERING,INC _ ENGINEERS • SURVEYORS - LIBORATOR ES • DRILLING MS W_ 67 ND•SPAINGFIED. NI5SpPo -PXONE I411I �JT•1 �L NxCEN50N C0.1 /3U] � 1EHGEL, PE9•U&5 u e' JMIDI 1014 -13PJE NB-109-465 O'REILLY AUTO PARTS 4227 A STREET SE AUBURN. WA #3 STORMWATER SYSTEM OPERATION & MAINTENANCE MANUAL PREPARED FOR: O'Reilly Automotive Stores, Inc. 233 S. Patterson Springfield, MO 65802 Phone #: (417) 862 -3333 PREPARED BY: Anderson Engineering, Inc. 2045 W. Woodland Springfield, MO 65807 Phone #: (417) 866 -2741 TABLE OF CONTENTS 1. DESCRIPTION OF FACILITIES A. Stormtech SC -740 Chambers B. Stormfilter Catch Basin C. Inlets /Overflow Structure 2. FACILITIES SITE MAP 3. INSPECTION CRITERIA 4. MAINTENANCE PROCEDURES 5. STORMWATER SYSTEM BMP INSPECTION FORM APPENDIX 1. Stormtech SC -740 Chambers O &M Manual 2. Stormfilter Inspection and Maintenance Procedures O'REILLY AUTO PARTS 4227 A STREET SE AUBURN, WA #3 Description of Facilities: 1. Stormtech SC -740 Chambers: Approximately 25 -feet west of the building are fifty -seven (19) Stormtech SC -740 Chambers installed to capture and control the release of stormwater runoff generated by the O'Reilly Auto Parts store and parking lot. The chambers control the release of the runoff by infiltrating it into the ground. 2. Stormfilter Catch Basin: A Stormfilter catch basin is located immediately upstream of the buried SC -740 chambers to filter the runoff draining to the buried chambers and being infiltrated into the ground. 3. Inlets /Overflow Structure: There are four different inlets on site. Inlet #1 is a yard inlet at the southeast corner of the buried chambers. It is open on all four sides to receive surface runoff. Inlet #2 /Stormfilter Catch Basin is a grated inlet to receive parking lot runoff, but it also filter the runoff. Inlet #3 /Overflow structure is a grated inlet to receive parking lot runoff, but it is also the emergency overflow structure that is connected to the city system. It is located in the drive aisle northeast of the northeast corner of the building. Inlet #4 is a grated inlet capturing parking lot runoff and is located in the pavement north of the O'Reilly Auto Parts pole sign. m 0 4 Aa r N E / 31 tl1Ntl$ NN3HLNON N019Nfitl(IB OO Rfilly AUTO PARTS ANDERSON 10010.13 "0 EE.j H 90'ObL M.,60,0L.LON A =i� am � N WH- j09J56 _ A$ O j P" _ n.,.S�a �.' a°� 4227 A STREET BE AUBURN, WASHINGTON a I mm m p n �304Cs C�3G3L�DD OG`:1C� p�G`� - 2a2 .n,....,n � N S z Co c.� — / _ � cli m II nz rm -C H II ptt I Im Om I .I y II CA } OO Rfilly AUTO PARTS ANDERSON 10010.13 "0 EE.j A =i� C—ENGINEERING.mc WH- j09J56 A$ j P" _ n.,.S�a �.' a°� 4227 A STREET BE AUBURN, WASHINGTON a ;fix a �304Cs C�3G3L�DD OG`:1C� p�G`� om. �. 2a2 .n,....,n --T O'REILLY AUTO PARTS 4227 A STREET SE AUBURN, WA #3 Inspection Criteria: The following schedule sets forth the minimum frequency of inspections for the BMP: 1. Stormtech SC -740 Chambers 2. Stormfilter Catch Basin: Annually OR As Needed Semi - Annually OR As Needed 3. Inlets: Semi- Annually OR As Needed O'REILLY AUTO PARTS 4227 A STREET SE AUBURN, WA #3 MAINTENANCE PROCEDURES RESPONSIBLE MAINTENANCE PERSONNEL: O'Reilly Automotive Stores, Inc. Maintenance Department Manager: Jason Bayless Phone #: (417) 862 -3333 Fax #: (417) 874 -7112 The Maintenance Department with O'Reilly Automotive Stores, Inc. is fully qualified to examine the Retention System including removal of the grates on the inlets, inspecting the pipe and chamber systems for silt accumulation. This manual shall be kept on -site at all times and must be made available to the City, upon request, for inspection. SCHEDULE OF DETENTION SYSTEM INSPECTIONS: The Maintenance Personnel shall inspect pollution control measures at least once every 6 months and within 24 hours after a storm event of 1 inch or greater. Damaged measures that prove to be ineffective shall be replaced with more effective measures or additional measures. Repeated failure of a control measure requires installation of a more suitable device to prevent discharge of pollutants from the site. The owner will keep a record of all inspections using the Stormwater System BMP Inspection Form. SYSTEM INSPECTION PROCEDURE: 1. Make a copy of the Stormwater System BMP Inspection Form from the Maintenance Manual. 2. Visually inspect each inlet and note on the Inspection Form the amount of sediment accumulated in the inlet. 3. Remove any sediment that has settled within the inlet and collect with qualified collection device such as a heavy duty garbage bag or solid garbage can. 4. Note on the Inspection Form that the Inlet has been cleaned. 5. Contact the local landfill or garbage collection company to coordinate a pick up and disposal of the sediment. 6. Walk the site and note any areas of soil erosion or pollution discharge from the site. Make note of these occurrences on the Detention Inspection Form and Contact the O'Reilly Maintenance Department to schedule a repair of these areas. 7. Provide maintenance for the Stormtech SC -740 Chambers and Stormfilter Catch Basin per the manufacturer's requirements in the Appendix. 8. Note on the Inspection Form that the BMPs have been inspected and cleaned. 9. Sign & date the report, fax a copy to the O'Reilly Maintenance Department, and file the original in the On -Site Inspection Manual. O'REILLY AUTO PARTS 4227 A STREET SE AUBURN, WA #3 STORMWATER SYSTEM BMP INSPECTION FORM STEP 1. INSPECT FOR SEDIMENT & DEBRIS: Check the box for each BMP inspected: Stormtech SC -740 Chambers: ❑ Inlet #1: ❑ Inlet #2 /Stormfilter Catch Basin: ❑ Inlet #4: ❑ Inlet #3 /Overflow Structure: ❑ STEP 2. NOTE ANY SEDIMENT OR DEBRIS WITHIN BMP'S AND DEPTH: STEP 3. VERIFY EACH BMP THAT HAS BEEN CLEANED: Check the box for each structure to confirm is it clean of sediment & debris: Stormtech SC -740 Chambers: ❑ Inlet #1: ❑ Inlet #2 /Stormfilter Catch Basin: ❑ Inlet #3 /Overflow Structure: ❑ Inlet #4: ❑ STEP 4. VISUAL INSPECTION & RECORD OF ANY SITE EROSION: STEP 5. SIGN, DATE, FAX COPY TO O'REILLY MAINTENANCE & FILE: Printed Name of Inspector Signature of Inspector Date APPENDIX Save Valuable Land and Protect Water Resources a .S#®rmTdcha Detention • Retention -Recharge Subsurface Stormwater Management'u Isolator TM Row O &M Manual StormTech° Chamber System for Stormwater Management 1.0 The Isolator "m Row 1.1 INTRODUCTION An important component of any Stormwater Pollution Prevention Plan Is inspection and maintenance. The StormTech Isolator Row is a patent pending technique to inexpensively enhance Total Suspended Solids (TSS) removal and provide easy access for inspection and maintenance. Looking down the Isolator Row from the manhole opening, woven geotextile is shown between the chamber and stone base. 1.2 THE ISOLATOR" ROW The Isolator Row is a row of StormTech chambers, either SC -310, SC -740 or MC -3500 models, that is surrounded with filter fabric and connected to a closely located man- hole for easy access. The fabric - wrapped chambers provide for settling and filtration of sediment as storm water rises in the Isolator Row and ultimately passes through the filler fabric. The open bottom chambers and perforated sidewalls allow storm water to flow both verti- cally and horizontally out of the chambers. Sediments are captured in the Isolator Row protecting the storage areas of the adjacent stone and chambers from sedi- ment accumulation. Two different fabrics are used for the Isolator Row. A woven geolextile fabric is placed between the stone and the Isolator Row chambers. The tough geotextile provides a media for storm water filtration and provides a durable surface for maintenance operations. It is also designed to prevent scour of the underlying stone and remain intact during high pressure jetting. A non -woven fabric is placed over the chambers to provide a filter media for flows passing through the perforations In the sidewall of the chamber. The Isolator Row is typically designed to capture the "first flush" and offers the versatility to be sized on a vol- ume basis or flow rate basis. An upstream manhole not only provides access to the Isolator Row but typically includes a high flow weir such that storm water flowrates or volumes that exceed the capacity of the Isolator Row overtop the over flow weir and discharge through a manifold to the other chambers. The Isolator Row may also be part of a treatment train. By treating storm water prior to entry Into the chamber system, the service life can be extended and pollutants such as hydrocarbons can be captured. Pre - treatment best management practices can be as simple as deep sump catch basins, oil -water separators or can be inno- vative storm water treatment devices. The design of the treatment train and selection of pretreatment devices by the design engineer is often driven by regulatory requirements. Whether pretreatment is used or not, the Isolator Row is recommended by StormTech as an effective means to minimize maintenance requirements and maintenance costs. Note: See the StormTech Design Manual for detailed information on designing inlets for a StormTech system, including the Isolator Row, StormTech Isolator Row with Overflow Spillway (not to scale) MANHOLE WITH OVERFLOW WEIR ECCENTRIC OPTIONAL ACCESS OPTIONAL PRE- TREATNIENT' STORMTECH r ISOLATOR ROW ` STORMTECH CHAMBERS 2 Call StormTech at 888.892.2694 or visit our website at www.stormtech.com for technical and product information. Jlrl1Jr1 .tih IM1.rrlll man .-E E-- .-E E-- .- o-- . -011 - .- E>E- -I ■-lS -- .- 11 -- .-E E-- ` STORMTECH CHAMBERS 2 Call StormTech at 888.892.2694 or visit our website at www.stormtech.com for technical and product information. 2A isolator How Inspection /Maintenance StormTech• 2.1 INSPECTION The frequency of Inspection and Maintenance varies by location. A routine inspection schedule needs to be established for each Individual location based upon site specific variables. The type of land use (i.e. industrial, commercial residential), anticipated pollutant load, per- cent Imperviousness, climate, etc. all play a critical role in determining the actual frequency of inspection and maintenance practices. At a minimum, StormTech recommends annual Inspec- tions. Initially, the Isolator Row should be inspected every 6 months for the first year of operation. For subsequent years, the inspection should be adjusted based upon previous observation of sediment deposition. The Isolator Row incorporates a combination of standard manholes) and strategically located inspection ports (as needed). The Inspection ports allow for easy access to the system from the surface, eliminating the need to perform a confined space entry for inspection purposes. If upon visual Inspection it Is found that sediment has accumulated, a stadia rod should be inserted to deter- mine the depth of sediment. When the average depth of sediment exceeds 3 Inches throughout the length of the Isolator Row, clean -out should be performed, 2.2 MAINTENANCE The Isolator Row was designed to reduce the cost of periodic maintenance. By "isolating" sediments to just one row, costs are dramatically reduced by eliminating the need to clean out each row of the entire storage bed. If inspection indicates the potential need for main- tenance, access is provided via a manhole(s) located on the ends) of the row for cleanout. If entry into the manhole Is required, please follow local and OSHA rules for a confined space entries. StormTech Isolator Row (not to scale) Examples of culvert cleaning nozzles appropriate for Isolator Row maintenance. /These are not StormTech products.) Maintenance Is accomplished with the JetVac process. The JetVac process utilizes a high pressure water noz- zle to propel itself down the Isolator Row while scouring and suspending sediments. As the nozzle Is retrieved, the captured pollutants are flushed back Into the man- hole for vacuuming. Most sewer and pipe maintenance companies have vacuum /JetVac combination vehicles. Selection of an appropriate JetVac nozzle will improve maintenance efficiency. Fixed nozzles designed for cul- verts or large diameter pipe cleaning are preferable. Rear facing jets with an effective spread of at least 45" are best. Most JetVac reels have 400 feet of hose allow- ing maintenance of an Isolator Row up to 50 chambers long. The JetVac process shall only be performed on StormTech Isolator Rows that have AASHTO class 1 woven geotextlle (as specified by StormTech) over their angular base stone. COVER ENTIRE ROW'N1TH AASHTO M280 INSPECTION PORT CLASS 2 NON WOVEN GEOTEXTILE LOCATION PER ENGINE - SC- 310.6(1.5 m) WIDE 5TRIP DRAWING SC-740-8'(2.4 )WO E STRIP STORMTECH x/MC-3500.12.5'(3 SO ) WIDE STRIP rENOCAP SC-740- 24.(600 m) PIPE REQUIREMENTS, BETWEEN STONE BASE AND CHAMBERS MC- 3500.24'(600 mm) PIPE SC- 310.4'(1, 2 m) WIDE STRIP SC- 710.5'6'(1.5 .)'WIDE STRIP &1C35C0. UT (2.5 mI WIDE STRIP Call StormTech at 888.892.2694 or visit our Website at www.stormtech.com for technical and product information. 3 PIUUN_" SC-740- 24.(600 m) PIPE REQUIREMENTS, BETWEEN STONE BASE AND CHAMBERS MC- 3500.24'(600 mm) PIPE SC- 310.4'(1, 2 m) WIDE STRIP SC- 710.5'6'(1.5 .)'WIDE STRIP &1C35C0. UT (2.5 mI WIDE STRIP Call StormTech at 888.892.2694 or visit our Website at www.stormtech.com for technical and product information. 3 3.0 Isolator Row Step By Step Maintenance Procedures Step 1) Inspect Isolator Row for sediment StormTech Isolator Row (not to scale) A) Inspection ports (it present) 1. Remove lid from floor box frame ii. Remove cap from inspection riser iii. Using a flashlight and stadia rod, measure depth of sediment and record results on maintenance log. iv. If sediment Is at, or above, 3 inch depth proceed to Step 2. If not proceed to step 3. B) All Isolator Rows L Remove cover from manhole at upstream end of Isolator now ii. Using a flashlight, inspect down Isolator Row through outlet pipe 1. Mirrors on poles or cameras may be used to avoid a confined space entry 2. Follow OSHA regulations for confined space entry if entering manhole iii. If sediment is at or above the lower row of sidewall holes (approximately 3 inches) proceed to Step 2. If not proceed to Step 3. Step 2) Clean out Isolator Row using the JetVac process A) A fixed culvert cleaning nozzle with rear facing nozzle spread of 45 inches or more is preferable B) Apply multiple passes of JetVac until backflush water is clean C) Vacuum manhole sump as required Step 3) Replace all caps, lids and covers, record observations and actions Step 4) Inspect & clean catch basins and manholes upstream of the StormTech system Sample Maintenance Log e ormTdChD Detention • Retention -Recharge Subsurface Stormwater Management'" 208eaveriSuite104 1Welhersfield 1 Connecticut 106109 860.529.8168 1 888.892.2694 fax 866.328.8401 I vrwvstormtech.can StormTech producis are covered by one or more of the following patents: U.S. Patents: 5,401,459; 5,511,903; 5,716,1633; 5,508,778; 5,839,844; Canadian Patents: 2,150,418 Other U.S. and Foreign Patents Pending Printed In U.S.A. © Copyright. All rights reserved. StormTech LLC, 2009 5090809 ~r- '�GI ►� a �Ww 11 STORMWATER SQLUTit7�75� StormFilter Inspection and Maintenance Procedures Maintenance Guidelines The primary purpose of the Stormwater Management StormFilter" is to filter out and prevent pollutants from entering our waterways. Like any effective filtration system, periodically these pollutants must be removed to restore the StormFilter to its full efficiency and effectiveness. Maintenance requirements and frequency are dependent on the pollutant load characteristics of each site. Maintenance activities may be required in the event of a chemical spill or due to excessive sediment loading from site erosion or extreme storms. It is a good practice to inspect the system after major storm events. Maintenance Procedures Although there are likely many effective maintenance options, we believe the following procedure is efficient and can be implemented using common equipment and existing maintenance protocols. A two step procedure is recommended as follows: 1. Inspection Inspection of the vault interior to determine the need for maintenance. 2. Maintenance Cartridge replacement Sediment removal Inspection and Maintenance Timing At least one scheduled inspection should take place per year with maintenance following as warranted. First, an inspection should be done before the winter season. During the inspection the need for maintenance should be determined and, if disposal during maintenance will be required, samples of the accumulated sediments and media should be obtained. Second, if warranted, a maintenance (replacement of the filter cartridges and removal of accumulated sediments) should be performed during periods of dry weather. In addition to these two activities, it is important to check the condition of the StormFilter unit after major storms for potential damage caused by high flows and for high sediment accumulation that may be caused by localized erosion in the drainage area. It may be necessary to adjust the inspection/ maintenance schedule depending on the actual operating conditions encountered by the system. In general, inspection activities can be conducted at any time, and maintenance should occur, if warranted, in late summer to early fall when flows into the system are not likely to he present. Maintenance Frequency The primary factor controlling timing of maintenance of the StormFilter is sediment loading. A properly functioning system will remove solids from water by trapping particulates in the porous structure of the filter media inside the cartridges. The flow through the system will naturally decrease as more and more particulates are trapped. Eventually the flow through the cartridges will be low enough to require replacement. It may be possible to extend the usable span of the cartridges by removing sediment from upstream trapping devices on a routine as- needed basis in order to prevent material from being re- suspended and discharged to the StormFilter treatment system. Site conditions greatly influence maintenance requirements. StormFilter units located in areas with erosion or active construction may need to be inspected and maintained more often than those with fully stabilized surface conditions. The maintenance frequency may be adjusted as additional monitoring information becomes available during the inspection program. Areas that develop known problems should be inspected more frequently than areas that demonstrate no problems, particularly after major storms. Ultimately, inspection and maintenance activities should be scheduled based on the 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. Prior to the development of the maintenance database, the following maintenance frequencies should be followed: Inspection One time per year After major storms Maintenance As needed, based on results of inspection (The average maintenance lifecycle is approximately 1 -3 years) Per Regulatory requirement In the event of a chemical spill Frequencies should be updated as required. The recommended initial frequency for inspection is one time per year. StormFilter units should be inspected after major storms. Sediment removal and cartridge replacement on an as needed basis is recommended unless site conditions warrant. Once an understanding of site characteristics has been established, maintenance may not be needed for one to three years, but inspection is warranted and recommended annually. Inspection Procedures The primary goal of an inspection is to assess the condition of the cartridges relative to the level of visual sediment loading as it relates to decreased treatment capacity. It may be desirable to conduct this inspection during a storm to observe the relative flow through the filter cartridges. If the submerged cartridges are severely plugged, then typically large amounts of sediments will be present and very little flow will be discharged from the drainage pipes. If this is the case, then maintenance is warranted and the cartridges need to be replaced. Warning: In the case of a spill, the worker should abort inspection activities until the proper guidance is obtained. Notify the local hazard control agency and CONTFCH stormwater Solutions immediately. To conduct an inspection: 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 notes concerning defects/problems. 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. 6. Close and fasten the access portals. 7. Remove safety equipment. 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. Maintenance Decision Tree The need for maintenance is typically based on results of the 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. 3. Submerged cartridges. a. If >4" of static water in the cartridge bay for more that 24 hours after end of rain event, maintenance is required. 4. Plugged media: a. If pore space between media granules is absent, maintenance is required. 5. Bypass condition. a. If inspection is conducted during an average rain fall event and StormFilter remains in bypass condition (water over the internal outlet baffle wall or submerged cartridges), maintenance is required. 6. Hazardous material release. a. If hazardous material release (automotive fluids or other) is reported, maintenance is required. 7. Pronounced scum line. a. if pronounced scum line (say ? 1/4" thick) is present above top cap, maintenance is required. 8. Calendar Lifecycle. a. If system has not been maintained for 3 years maintenance is required. Assumptions • No rainfall for 24 hours or more • No upstream detention (at least not draining into Storm.-Filter) • Structure is online • Outlet pipe is clear of obstruction • Construction bypass is plugged Maintenance Depending on the configuration of the particular system, maintenance personnel will be required to enter the vault to perform the maintenance. Important: If vault entry is required, OSHA rules for confined space entry must be followed. Filter cartridge replacement should occur during dry weather. It may be necessary to plug the filter inlet pipe if base flows is occurring. Replacement cartridges can be delivered to the site or customers facility. Information concerning how to obtain the replacement cartridges is available from CONTECH Stormwater Solutions. Warning: In the case of a spill, the maintenance personnel should abort maintenance activities until the proper guidance is obtained. Notify the local hazard control agency and CONTECH Stormwater Solutions immediately. To conduct cartridge replacement and sediment removal maintenance: 1. If applicable, set up safety equipment to protect maintenance 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, including components, a general condition inspection. 5. Make notes about the external and internal condition of the vault. Give particular attention to recording the level of sediment build -up on the floor of the vault, in the forebay, and on top of the internal components. 6. Using appropriate equipment offload the replacement cartridges (up to 150 lbs. each) and set aside. 7. Remove used cartridges from the vault using one of the following methods: Method 1: A. This activity will require that maintenance personnel enter the vault to remove the cartridges from the under drain manifold and place them under the vault opening for lifting (removal). Unscrew (counterclockwise rotations) each filter cartridge from the underdrain connector. Roll the loose cartridge, on edge, to a convenient spot beneath the vault access. Using appropriate hoisting equipment, attach a cable from the boom, crane, or tripod to the loose cartridge. Contact CONTECH Stormwater Solutions for suggested attachment devices. B. Remove the used cartridges (up to 250 lbs. each) from the vault. C. Set the used cartridge aside or load onto the hauling truck. D. Continue steps a through c until all cartridges have been removed. Method 2: A. Enter the vault using appropriate confined space protocols. B. Unscrew the cartridge cap. C. Remove the cartridge hood screws (3) hood and float. D. At location under structure access, tip the cartridge on its side. ', Important Note_that cartndges containing ' media other .'+ Il T. leaf media require unscrewing from then threaded F, = 'connectors :Take care not to damage .the manifold ":connectors'This connedoi should remain installed in the f �- manifold and capped if necessary _'•x `s D. Emptj the cartridge onto the vault Floor. Reassemble the empty cartridge. E. Set the empty, used cartridge aside or load onto the hauling truck. ' F. Continue steps a through a until all cartridges have been removed. 8. Remove accumulated sediment from the floor of the vault and from the forebay. This can most effectively be accomplished by use of a vacuum truck. 9. Once the sediments are removed, assess the condition of the vault and the condition of the connectors. The connectors are short sections of 2 -inch schedule 40 PVC, or threaded schedule 80 PVC that should protrude about 1" above the floor of the vault. Lightly wash down the vault interior. a. If desired, apply a light coating of FDA approved silicon lube to the outside of the exposed portion of the connectors. This ensures a watertight connection between the cartridge and the drainage pipe. In. Replace any damaged connectors. 10. Using the vacuum truck boom, crane, or tripod, lower and install the new cartridges. Once again, take care not to damage connections. 11. Close and fasten the door. 12. Remove safety equipment. 13. Finally, dispose of the accumulated materials in accordance with applicable regulations. Make arrangements to return the used emot cartridges to CONTECH Stcrmwater Solutions. Related Maintenance Activities - Performed on an as- needed basis StormFilter units are often just one of many structures in a more comprehensive stormwater drainage and treatment system. 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. In addition to considering upstream facilities, it is also important to correct any problems identified in the drainage area. Drainage area concerns may include: erosion problems, heavy oil loading, and discharges of inappropriate materials. Material Disposal The accumulated sediment found in stormwater treatment and conveyance systems must be handled and disposed of in accordance with regulatory protocols. It is possible for sediments to contain, measurable concentrations of heavy metals and organic chemicals (such as pesticides and petroleum products). Areas with the greatest potential for high pollutant loading include industrial areas and heavily traveled roads. Sediments and water must be disposed of in accordance with all applicable waste disposal regulations. When scheduling maintenance, consideration must be made for the disposal of solid and liquid wastes. This typically requires coordination with 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. CAORECYC PMER lED �ira'driG3�AS7° stcnxs'rate¢ � 800.925.5240 co n t ech sto rmwa ter. co m Support Drawings and specifications are available at con techstormwater.com. • Site- specific design support is available from our engineers. ©2007 CONTECH Stormwater Solutions CONTECH Construction Products Inc. 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 Nothing in this catalog should be construed as an expressed warranty or an implied warranty of merchantability or fitness for any particular purpose. See the CONTECH standard quotation or acknowledgement for applicable warranties and other terms and conditions of sale. %R:r W410 :NO i 1111C.!7 STORMWATER SOLUTIONS»<. I. Inspection Report Date: Personnel: Location: System Size: System Type: Vault ❑ Cast -In -Place ❑ Linear Catch Basin ❑ Manhole ❑ Other ❑ Sediment Thickness in Forebay: Date: 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: %R:r W410 :NO i 1111C.!7 STORMWATER SOLUTIONS»<. ' I Review the condition reports from the previous inspection visits. I an p• I Date: Personnel: Location: System Size: System Type: Vault ❑ Cast -In -Place ❑ Linear Catch Basin ❑ Manhole ❑ Other ❑ List Safety Procedures and Equipment Used: I I System Observations I Months in Service: Oil in Forebay: Yes ❑ No❑ Sediment Depth in Forebay: 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: I I I A��I %�IYCAI�� M"rZ STORMWATER SOLUTIONS .�.