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Home My WebLink About20130617001436 STORM WATER EASEMENT & MAINT AGREEMENT 08/09/2012IffCAN Return Address: City of Auburn Cih' Clerk 25 West Main Auburn, WA 98001 �@�sWtldE�6I1N3 €i 20130611001436 N( 2UON Co 3Y14 sv� Go. � dSUnisial By aepttlp Above this line resen ed for recordm2 mtormatton. STORM WATER EASEMENT AND MAINTENANCE AGREEMENT FAC 12 -0001 Reference 4 lifapphcablel N/A r Grantor/Bornmer Auburn RTSI LLC Grantee /Assi_neeBeneticiary City of Auburn Leeal Description /STR. Nl W 'G S 12 —121 N — R41- Assessor s Fax Parcel 11)4* 1221049041 R 122104 -9042 THIS EASEMENT AND AGREEMENT made and entered into this Q day of n rgctsf . 2012. by and between the City of Auburn. a municipal corporation of Wing County, Washington, hereinafter referred to as "CITY" and Auburn BTS1, LLC hereinafter referred to as "PROPERTY OWNER" WHEREAS, PROPERTY OWNER has applied for certain permits With the CITY for the construction of facilities for HCSA Laundry Facility located at 15th Street N.W. and `NI' Street N.W., 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. 'thl?parties desire that this Agreement be recorded to advise heirs. successors and assi._ns of both parties as to the existence of this easement and agreement: and Storm water Easement and Maintenance Agreement r; UR1'R9Y UCORDIIiQ ON I'ugc I of 19 ` al Afff��777777&wjgnM n M TiMELV&V R LtR C(4g*14S 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 proposes 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. FAC12 -0001. 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 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 Gasemcnt and Maintenance Agreement Page 2 of 10 Section 4, ACKNOWLEDGMENT OF OTHER ENFORCEMENT ACTIONS PROPERTY OWNER acknowledges that there may be liability for violations of codes that could result in additional tines and /or the possibility, of incarceration in addition to the fees for maintenance should violations occur EXECUTED as of the date first written above. AUBURN BTSI, LLC, a Delaware limited liability, company By PDC Seattle, LLC a Delaware limited liability company. Manager By Brynestad Family 3, LLC. a Washington limited liability company, Manager By Bart Brynestad. Sole Member STATE OF WASI-IINGfON ) ) ss COUNTY OF KING ) I certify I have know or have satisfactory evidence that '+Pw(V --T (f'ESYfF� and Ore the person(s) who appeared before me, and said person(s) acknowledged that he /she /they signed this instrument on oath stated that /she /they was/were authorized to execute the instrument and acknowledge as the Giot'C - -. L— and of r1ev Nis-r 1! i x5 v , . t z t v e _ a limited liability company, to be the free and voluntary act of such part for the uses and purposes mentioned in the instrument Dated 4pw &QsT --7 ?,e., I Z Q� P. W.tSSIOjy'•. sq ��i �Q•4� A i V t NOTARY Notary Public in and for the State of Washington y' PUBuc J a? Residing at k'�tQL, C o TJ \UNLt�i,W Z •• r M% appointment expires CJ2 - I:::) -'LD IZ Slurrr(AY*j'k.SS.*WrA'and Maintenance Agreement Pa,,,c 3 of (Atnr °' CITY OF AUBURN arlaw Storm nage Engineer Da c Z STATE OF WASHINGTON) )ss. COUNTY OF KING ) 1 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 01" AUBURN to he the free and voluntary act of such party for the uses and purposes mentioned in this instrument. Dated ) / ] / (,g __��` �•N111111 I' a*P��'; i�9A, �F' ^,�ctalrlG Notary Public in Residing at My appointment 1IS /tlb tile. 1329 RI ?F H \DFVI3L0PN fFN lVrojects \I ICSA Lmuniry Facihh \Legal Documents12012 Storm Water Easement and Maintenance Agreement Page 4 of 19 EXHIBIT "A" LEGAL DISCRIPTION FOR STORM MAINTENANCE EASEMENT NEW LEGAL DESCRIPTION' THE LAND REFERRED TO IS SITUATED IN THE COUNTY OF KING, CITY OF AUBURN, STATE OF WASHINGTON, AND IS DESCRIBED AS FOLLOWS. LOT(S) 1, 3 AND 4, CITY OF AUBURN SHORT PLAT NO SPL0015 -90, RECORDED UNDER RECORDING NO 9111040979, RECORDS OF KING COUNTY, WASHINGTON, EXCEPT THAT PORTION OF SAID LOT 4 CONVEYED TO THE CITY OF AUBURN FOR STREET AND PUBLIC UTILITIES BY DEEDS RECORDED UNDER RECORDING NOS 9212112165 AND 9212112166 EXCEPT THAT PORTION OF LOT 4 CONVEYED TO THE CITY OF AUBURN UNDER KING COUNTY RECORDING NO 20120418001200, TOGETHER WITH A PERPETUAL NONEXCLUSIVE EASEMENT FOR INGRESS AND EGRESS, AS DISCLOSED BY ACCESS AND ENCROACHMENT EASEMENT RECORDED UNDER RECORDING NO 9111080282 SITUATE IN THE COUNTY OF KING, STATE OF WASHINGTON Storm Rater I'mement and Nlamtenance Agreement Paee 5 of 19 i I PROPOSED POND 3 lw_1100' _ -_ -- - — — ;__ III 1 1 BOUNDARY \ LOT 1 a \ APN 122104 -9041 \ CITY OF AUBURN SPL0015 -90 / \ REC. NO 911104097./ \ �0\�� PROPOSED 1 " I I POND 2 j-� PROPOSED PjQND u 1 b I LOT 2 E APN 122104- o N 4708"W 81.1 4'461Y 7� 59.94. ,i „j - 74.9I'� 3 I$ ;� POBURN t2 v { I C1 SPOp0151 90 p9'9 � SCALE: For JOB NUMBER HORIZONTAL I" =100' VERTICAL N/A PANATTONI 15285 GHAV KENT, WA AVENUE SOU 7H DEVELOPMENT COMPANY PQ' S� KENT, 51 98032 /5285LO/i.000 425 251 -6222 m Z 425 251 -8782 FAX TINA: SHEET CML ENGINEERING, LAND STORM DRAINAGE PLANNING. EASEMENT EXHIBIT 1 2 ENVIRONMENTAL TAL SERVICES CES of Paoe 6 of 19 01 I a' I -I I I I Y i v 1y I \ a�i2N L'op ��' ADa R 'u NO LOT 3 &4 APN 122104 -9042 m w 1" =100' \ SCALE: For: job ,vtr..OE.R 'oORIZONTAL I =t10' ,_RTICAI. N/A PANATTONI 15285 GHq� lezls r<NO �vENUE SOUTH DEVELOPMENT COMPANY Q' S KENT, 'R'4 98032 ; 5285L, 01;. DOC Q)P _ FZ 1)425)25 i -6222 _ `425)251 -8782 FAx Title: SHEET CIVIL ENGINEERING, LAND STORM DRAINAGE ''�ca� ENVIRONIVENT L ERVICES EASEMENT EXHIBIT 2 0 2 fOrin :11er .a.c`mCn1 :m, ❑Inlc`nancC, ul'cemcnt I'a�e 7 of 19 EXHIBIT `C' STORM WATER POLLUTION PREVENTION MAINTENANCE and OPERATION SCHEDULE For the Hospital Central Services Association Laundry Facility SEPA # SEP11 -0018 FAC# FAC12 -0001 GRA # GRA12 -0002 Site Address. The project is located in the NW 1/4 of Section 12, Township 21 North, Range 4 East, W.M., at the northeast corner of 15th Street N.W and 'M' Street N.W The tax parcel numbers are 122104 -9041 and 122104 -9042. Introduction, This storm drainage technical information report has been prepared to address the City of Auburn's site development and storm drainage requirements for the proposed HSCA Laundry Facility project located at the Northeast corner of 15th Street N.W and 'M' Street N.W The site has an area of approximately 9 59 acres and is currently vacant pasture land. The subject site will be developed as a hospital laundry service facility The subject site will have one large building surrounded by parking and drive aisles. According to the City of Auburn's Construction Standards for storm water management, the City requires storm water quantity and quality control to all proposed developments. We have proposed to collect all of the storm water runoff from the landscaped, building and pavement areas in a series of catch basins. This water will be conveyed by storm drainage pipe to a storm water wet/detention pond located on the north parcel. Here the storm water will be released into an 18 -inch existing conveyance pipe flowing northerly in 'M' Street N.W ultimately discharging into Mill Creek several hundred feet north of the site Sturm Water Easement and Maintenance Agreement Pace 8 of 19 Plan Goal: The specific purpose for the storm water facility is to minimize pollution that is typically associated with modern development. In general, pollution from motor vehicles and pollution generated from erosion. Attached to this narrative is a maintenance manual, which offers guidelines to the owner for storm water facility maintenance. Prevention BMP'S. The catch basins shall have stenciled on them "DUMP NO WASTE — DRAINS TO STREAM." The owner shall be responsible for sweeping the lot, installing storm drainage stenciling and provide spill control procedures. In case of spill call the Department of Ecology at 1- 425 - 649 -7000 The catch basins, detention /wetpond, and control structures will be visually inspected for accumulation of debris and silt and will be maintained as required by this pollution prevention plan and attachments. Maintenance Standards for Drainage Facilities (from the City of Auburn Surface Water Management Manual, November 2009) (Add numbered standards) No 1 — Detention Pond No 4 — Control Structure /Flow Restrictor No 5 — Catch Basins No 6 — Debris Barriers No 7 — Energy Dissipaters No 11 — Wetpond Treatment BMP'S A two- celled detention /wetpond has been installed to treat runoff for conventional pollutants. The wetpond was designed to treat 64% of the 2- year storm event (water quality storm) for water quality treatment. In addition, the detention pond was designed to detain the volume created from releasing half the existing 2 -year and 10 -year storm events, while holding the developed 2 -year and 25 -year storm volumes. Storm Water Easement and Maintenance Agrcement Page 9 or 19 Inspection /Maintenance: Regular inspections of the drainage facilities should be carried out twice per year, in the spring and fall. The responsible party should keep records of these inspections available for review by the City Additional inspections may be required after severe storms. Routine maintenance of the site will include mowing, care of landscaping and the removal of trash and debris from the drainage system. The parking lots and driveways should be kept clean and in repair Events such as major storms or heavy winds will require immediate inspections for damages. To ensure proper water quality and treatment, the detention /wetpond must be properly maintained. Be careful to avoid introducing landscape fertilizer to receiving waters or groundwater If wetpond side slopes become eroded over 2" deep, stabilize by using appropriate erosion control measures (e.g., rock reinforcement, planting of grass, compaction). Catch basins shall be cleaned when sump is 1/3' full of sediment or debris, Person of Responsibility: Patrick Gemma Panattoni Development 6840 Fort Dent Way, Suite 350 Seattle, WA 98188 (206) 248 -0282 Design Engineer: Dan Balmelli Barghausen Consulting Engineers 18215 -72nd Avenue South Kent, WA 98032 (425) 251 -6222 Plan and /or Information Updates The City of Auburn Storm Drainage Utility section is to review and approve any changes to this Storm Water Pollution Prevention Plan prior to changes in its implementation. Additionally, any changes in ownership or person of responsibility are to be reported to the City Storm Drainage Utility section. Swim %\later Easement and Maintenance Aei ecment Page 10 of 19 INSPECTION /MAINTENANCE CHECKLIST STRUCTURE DATE OF INSPECTION /MAINTENANCE Results/ Maintenance Date Inspection All Catch Basins Results Maintenance Done Storm Detention/ Inspection Wet and Results Maintenance Done Inspection Conveyance Pipes Results Maintenance Done Flow Control Inspection Structure Results Maintenance Done Debris Inspection Barriers Results Maintenance Done Energy Inspection Dissipaters Results Maintenance Done Storm Water Easement and Xlaintenance Aai crment Page I I or 19 Maintenance Standards for Drainage Facilities. The facility- specific maintenance standards contained In this section are intended to be conditions for determining if maintenance actions are required as identified through inspection. They are not intended to be measures of the facility's required condition at all times between inspections. In other words, exceeding these conditions at any time between inspections and/or maintenance does not automatically constitute a violation of these standards However, based upon inspection observations, the inspection and maintenance schedules shall be adjusted to minimize the length of time that a facility is in a condition that requires a maintenance action. No. 1 — Detention Ponds Maintenance Defect Conditions When Maintenance Is Results Expected When Component Needed Maintenance Is Performed General Trash & Any trash and debris which exceed 5 Trash and debris cleared from site Debris cubic feet per 1,000 square feet (this is about equal to the amount of trash it would take to fill up one standard size garbage can) In general, there should be no visual evidence of dumping If less than threshold all trash and debris will be removed as part of next scheduled maintenance Poisonous Any poisonous or nuisance No danger of poisonous vegetation Vegetation vegetation which may constitute a where maintenance personnel or and noxious hazard to maintenance personnel or the public might normally be. weeds the public (Coordinate with local health department.) Any evidence of noxious weeds as defined by State or local regulations Complete eradication of noxious weeds may not be possible (Apply requirements of adopted IPM Compliance with State or local policies for the use of herbicides) eradication policies required Contaminant Any evidence of oil, gasoline, No contaminants or pollutants s and contaminants or other pollutants present Pollution (Coordinate removal (cleanup with local water quality response agency) Rodent Holes Any evidence of rodent holes if Rodents destroyed and dam or facility is acting as a dam or berm, or berm repaired. (Coordinate with any evidence of water piping through local health department, dam or berm via rodent holes. coordinate with Ecology Dam Safety Office if pond exceeds 10 acre -feel ) Storm Water Easement and Maintenance Agreement Page 12 or 19 No. 1 — Detention Ponds Maintenance Defect Conditions When Maintenance Is Results Expected When Component Needed Maintenance Is Performed Beaver Dams Dam results in change or function of Facility is returned to design the facility function (Coordinate trapping of beavers and removal of dams with appropriate permitting agencies.) Insects When insects such as wasps and Insects destroyed or removed from hornets interfere with maintenance site activities Apply insecticides in compliance with adopted IPM policies. Tree Growth Tree growth does not allow Trees do not hinder maintenance and Hazard maintenance access or interferes activities. Harvested trees should Trees with maintenance activity (i e , slope be recycled into mulch or other mowing, silt removal, vactonng, or beneficial uses (e.g. alders for equipment movements) If trees are firewood) not interfering with access or maintenance, do not remove. Remove hazard trees. If dead, diseased, or dying trees are identified. (Use a certified Arbonst to determine health of tree or removal requirements ) Side Slopes Erosion Eroded damage over 2 inches deep Slopes should be stabilized using of Pond where cause of damage is still appropriate erosion control present or where there is potential for measure(s), e.g., rock continued erosion. reinforcement, planting of grass, compaction Any erosion observed on a compacted berm embankment. If erosion is occurring on compacted berms a licensed civil engineer should be consulted to resolve source of erosion Storage Area Sediment Accumulated sediment that exceeds Sediment cleaned out to designed 10% of the designed pond depth pond shape and depth, pond unless otherwise specified or affects reseeded if necessary to control inletting or outletting condition of the erosion. facility Liner (If Liner is visible and has more than Liner repaired or replaced. Liner is Applicable) three 1/4 -inch holes in it fully covered. Storm Water Basement and Maintenance Agreement Page 13 of 19 No. 1 — Detention Ponds Maintenance Defect Conditions When Maintenance Is Results Expected When Component Needed Maintenance Is Performed Pond Berms Settlements Any part of berm that has settled 4 Dike is built back to the design (Dikes) inches lower than the design elevation. elevation If settlement is apparent, measure berm to determine amount of settlement. Settling can be an indication of more severe problems with the berm or outlet works A licensed civil engineer should be consulted to determine the source of the settlement Piping Discernable water flow through pond Piping eliminated Erosion berm. Ongoing erosion with potential potential resolved. for erosion to continue. (Recommend a Goethechnical engineer be called in to inspect and evaluate condition and recommend repair of condition Emergency Tree Growth Tree growth on emergency spillways Trees should be removed. If root Overflow/ creates blockage problems and may system is small (base less than 4 Spillway and cause failure of the berm due to inches) the root system may be left Berms over 4 uncontrolled overtopping. in place. Otherwise the roots feet in height. should be removed and the berm Tree growth on berms over 4 feet in restored A licensed civil engineer height may lead to piping through the should be consulted for proper berm which could lead to failure of berm /spillway restoration the berm. Piping Discernable water flow through pond Piping eliminated Erosion berm Ongoing erosion with potential resolved potential for erosion to continue. (Recommend a Goethechnical engineer be called in to inspect and evaluate condition and recommend repair of condition. Emergency Emergency Only one layer of rock exists above Rocks and pad depth are restored Overflow/ Overflow/ native soil in area five square feet or to design standards. Spillway Spillway larger, or any exposure of native soil at the top of out flow path of spillway (Riprap on inside slopes need not be replaced.) Erosion See "Side Slopes of Pond " Storm Water Easement and Maintenance Agi cement Page 14 of 19 No. 4— Control Structure /Flow Restrictor Maintenance Defect Condition When Maintenance is Needed Results Expected Component When Maintenance is Performed General Trash and Debris Material exceeds 25% of sump depth or 1 Control structure (Includes Sediment) foot below orifice plate orifice is not blocked All trash and debris removed. Structural Damage Structure is not securely attached to Structure securely manhole wall attached to wall and outlet pipe Structure is not in upright position (allow up Structure in correct to 10% from plumb) position. Connections to outlet pipe are not watertight Connections to outlet and show signs of rust pipe are watertight, structure repaired or replaced and works as designed. Any holes, other than designed holes, in the Structure has no structure. holes other than designed holes Cleanout Damaged or Missing Cleanout gate is not watertight or is missing Gate is watertight and Gate works as designed One maintenance person cannot move up Gate moves up and and down gate. down easily and is watertight. Chain /rod leading to gate is missing or Chain is in place and damaged works as designed Gate is rusted over 50% of its surface area. Gate is repaired or replaced to meet design standards Orifice Plate Damaged or Missing Control device is not working properly due Plate is in place and to missing, out of place, or bent orifice plate works as designed. Obstructions Any trash, debris, sediment, or vegetation Plate is free of all blocking the plate obstructions and works as designed. Overflow Pipe Obstructions Any trash or debris blocking (or having the Pipe is free of all potential of blocking) the overflow pipe. obstructions and works as designed Manhole See "Closed See "Closed Detention Systems (No. 3). See "Closed Detention Systems' Detention Systems" (No 3) (No 3). Catch Basin See "Catch Basins" See "Catch Basins' (No. 5). See "Catch Basins" (No. 5). (No 5). Sturm Water Lasemeni and D]ointcnance Agreement Page 15 of ly No. 5 —Catch Basins Maintenance Defect Conditions When Maintenance is Needed Results Expected Component When Maintenance is performed General Trash & Trash or debris which is located immediately in No Trash or debris Debris front of the catch basin opening or is blocking located immediately in inletting capacity of the basin by more than front of catch basin or 10 %. on grate opening. Trash or debris (in the basin) that exceeds 60 No trash or debris in the percent of the sump depth as measured from catch basin, the bottom of basin to invert of the lowest pipe into or out of the basin, but in no case less than a minimum of six inches clearance from the debris surface to the invert of the lowest pipe Trash or debris in any inlet or outlet pipe Inlet and outlet pipes blocking more than 1/3 of its height. free of trash or debris Dead animals or vegetation that could generate No dead animals or odors that could cause complaints or vegetation present dangerous gases (e g , methane). within the catch basin Sediment Sediment (in the basin) that exceeds 60 No sediment in the percent of the sump depth as measured from catch basin. the bottom of basin to invert of the lowest pipe into or out of the basin, but in no case less than a minimum of 6 inches clearance from the sediment surface to the invert of the lowest pipe Structure Top slab has holes larger than 2 square inches Top slab is free of holes Damage to or cracks wider than 1/4 inch. and cracks Frame and /or Top Slab (Intent is to make sure no material is running into basin) Frame not sitting flush on top slab, i e Frame is sifting Flush on separations of more than 3/4 inch of the frame the riser rings or top from the top slab Frame not securely attached slab and firmly attached Fractures or Maintenance person judges that structure is Basin replaced or Cracks m unsound repaired to design Basin Walls/ standards Bottom Grout fillet has separated or cracked wider than Pipe is regrouted and 1/2 inch and longer than 1 foot at the joint of secure at basin wall. any inlet /outlet pipe or any evidence of soil particles entering catch basin through cracks. Settlement/ If failure of basin has created a safety, function, Basin replaced or Misalignment or design problem repaired to design standards. Vegetation Vegetation growing across and blocking more No vegetation blocking than 10% of the basin opening. opening to basin. .,term Water Easement and Maintenance -kgreement Page 16 of 19 No. 5 —Catch Basins Maintenance Defect Conditions When Maintenance is Needed Results Expected Component Needed When Maintenance is General Trash and Trash or debris that is plugging more performed Debris Vegetation growing in inlet/outlet pipe joints No vegetation or root Metal Damaged/ that is more than six inches tall and less than growth present. Missing six inches apart more than 3/4 inch. Contaminate See "Detention Ponds" (No 1) No pollution present n and Bars are missing or entire barrier Bars in place according to Pollution missing design. Catch Basin Cover Not in Cover is missing or only partially in place. Any Catch basin cover is Cover Place open catch basin requires maintenance. closed. Locking Mechanism cannot be opened by one Mechanism opens with Mechanism maintenance person with proper tools Bolts proper tools Not Working into frame have less than 1/2 inch of thread Cover Difficult One maintenance person cannot remove lid One maintenance to Remove after applying normal lifting pressure person can remove (Intent is keep cover from sealing off access to cover maintenance ) Ladder Ladder Ladder is unsafe due to missing rungs, not Ladder meets design Rungs securely attached to basin wall, misalignment, standards and allows Unsafe rust, cracks, or sharp edges maintenance person safe access. Metal Grates Grate Grate with opening wider than 7/8 inch. Grate opening meets (If Applicable) opening design standards Unsafe Trash and Trash and debris that is blocking more than Grate free of trash and Debris 20% of grate surface inlettng capacity debris. Damaged or Grate missing or broken member(s) of the Grate is in place and Missing grate. meets design standards. No. 6 — Debris Barriers (e.g., Trash Racks) Maintenance Defect Condition When Maintenance is Results Expected When Components Needed Maintenance is Performed General Trash and Trash or debris that is plugging more Barrier cleared to design flow Debris than 20°% of the openings in the barrier capacity Metal Damaged/ Bars are bent out of shape more than 3 Bars in place with no bends Missing inches more than 3/4 inch. Bars. Bars are missing or entire barrier Bars in place according to missing design. Bars are loose and rust is causing 50% Barrier replaced or repaired to deterioration to any part of barrier design standards. Inlet/Outlet Debris barrier missing or not attached to Barrier firmly attached to pipe Pipe pipe Sturm Water Easement and Maintenance Acreement Pdgc 17 of lU No. 7 — Energy Dissipaters Maintenance Defect Conditions When Maintenance is Results Expected When Components Needed Maintenance is Performed External- Rock Pad Missing or Only one layer of rock exists above Rock pad replaced to design Moved Rock native soil in area five square feet or standards larger or any exposure of native sod Erosion Soil erosion in or adjacent to rock pad Rock pad replaced to design standards Dispersion Pipe Plugged Accumulated sediment that exceeds Pipe cleaned /flushed so that it Trench with Sediment 20% of the design depth. matches design. Not Visual evidence of water discharging at Trench redesigned or rebuilt to Discharging concentrated points along trench standards Water (normal condition is a "sheet flow" of Properly water along trench) Intent is to prevent erosion damage. Perforations Over 1/2 of perforations in pipe are Perforated pipe cleaned or Plugged plugged with debris and sediment replaced. Water Flows Maintenance person observes or Facility rebuilt or redesigned to Out Top of receives credible report of water flowing standards "Distributor" out during any storm less than the Catch Basin. design storm or it's causing or appears likely to cause damage Receiving Water in receiving area is causing or No danger of landslides. Area Over- has potential of causing landslide Saturated problems. Internal: Manhole /Cham Worn or Structure dissipating flow deteriorates Structure replaced to design ber Damaged to 1/2 of original size or any standards. Post, Baffles, concentrated worn spot exceeding one Side of square foot that would make structure Chamber unsound. Other Defects See 'Catch Basins" (No. 5) See "Catch Basins" (No. 5). Storm Water Easement and Maintenance Aercement Page 18 01-19 No. 11 — Wetponds Maintenance Defect Condition When Results Expected When Maintenance Component Maintenance is Needed is Performed General Water level First cell is empty, doesn't hold Line the first cell to maintain at least 4 water feet of water Although the second cell may drain, the first cell must remain full to control turbulence of the incoming flow and reduce sediment resuspension. Trash and Accumulation that exceeds 1 Trash and debris removed from pond. Debris CF per 1000 -SF of pond area. Inlet/Outlet Inlet /outlet pipe clogged with No clogging or blockage in the inlet and Pipe sediment and /or debris outlet piping. material. Sediment Sediment accumulations in Sediment removed from pond bottom Accumulation pond bottom that exceeds the in Pond depth of sediment zone plus 6- Bottom inches, usually in the first cell Oil Sheen on Prevalent and visible oil Oil removed from water using oil - Water sheen absorbent pads or vactor truck. Source of oil located and corrected. If chronic low levels of oil persist, plant wetland plants such as Juncus effusus (soft rush) that can uptake small concentrations of oil Erosion Erosion of the pond's side Slopes stabilized using proper erosion slopes and /or scouring of the control measures and repair methods pond bottom, that exceeds 6- inches, or where continued erosion is prevalent Settlement of Any part of these components Dike /berm is repaired to specifications. Pond that has settled 4- inches or Dike /Berm lower than the design elevation, or inspector determines dike /berm is unsound Internal Berm Berm dividing cells should be Berm surface is leveled so that water level. flows evenly over entire length of berm Overflow Rock is missing and soil is Rocks replaced to specifications Spillway exposed at top of spillway or outside slope Storm Water Easement and Maintenance Agi cement Pae-c 19 of 19