LACEY FOOD BANK HATTON GODAT PANTIER

Transcription

1 LACEY FOOD BANK Preliminary Maintenance Plan Prepared for: Thurston County Food Bank 220 Thurston Ave NE Olympia, WA (360) May 25, 2018 Prepared by: Chloe P. Mclntyre, EIT Reviewed by: Steven D Hatton, PE HATTON GODAT PANTIER 3910 Martin Way E., Suite B Olympia, WA (360) Project No: Project Name: LACEY FOOD BANK E:\office\JOBS\2017\ Lacey Food Bank\PERMH"\RPT-Maintenance Plan docx

2 TABLE OF CONTENTS Maintenance Agreement... 1 Stormwater Facilities Maintenance Program... 8 Introduction...8 Your Stormwater Facilities...9 Facility Key...9 Site Plan...10 Quick List...11 Maintenance Checklists...12 Resource Listing...28 Log Sheet...29 Pollution Source Control Program Introduction General Principles of Pollution Prevention General Source Control BMPs Site / Business Specific BMPS ATTACHMENT A - COMMERCIAL AND INDUSTRIAL ACTIVITIES WORKSHEET...41 ATTACHMENT B-ACTIVITY SHEETS...45 ATTACHMENT C - INTEGRATED PEST MANAGEMENT PLAN ATTACHMENT D-ANNUAL REPORT CHECKLIST ATTACHMENT E - QUICK REFERENCE PHONE NUMBERS AND WEBSITES...63

3 Maintenance Agreement LACEY FOOD BANK PAGE 1

4 COMMERCML/INDUSTRIAL MAINTENANCE AGREEMENT After recording return to: Thurston County 2000 Lakeridge Drive SW Olympia, WA Thurston County Project No. "COMMERCIAL/INDUSTRIAL" AGREEMENT TO MAINTAIN STORMWATER FACILITIES AND TO IMPLEMENT A POLLUTION SOURCE CONTROL PLAN For purposes of this agreement and for indexing by the Auditor as required by R.C.W. Ch , the parties of this agreement are THURSTON COUNTY FOOD BANK, Owner, and Thurston County and succeeding jurisdictions through annexation. LEGAL DESCRIPTION OP PROPERTY: SEE ATTACHED "EXHIBIT A". Assessor Parcel No.(s)

5 (COMMERCIAL/INDUSTRIAL VERSION) AGREEMENT TO MAINTAIN STORMWATER FACILITIES AND TO IMPLEMENT A POLLUTION SOURCE CONTROL PLAN BY AND BETWEEN THURSTON COUNTY AND SUCCEEDING JURISDICTIONS THROUGH ANNEXATION, AND THURSTON COUNTY FOOD BANK, AND ITS HEIRS, SUCCESSORS, OR ASSIGNS (HEREINAFTER "OWNER") The upkeep and maintenance of stormwater facilities and the implementation of pollution source control best management practices (BMPs) are essential to the protection of water resources in Thurston County. All property owners are expected to conduct business in a manner that promotes environmental protection. This Agreement contains specific provisions with respect to maintenance of stormwater facilities and use of pollution source control BMPs. The authority to require maintenance and pollution source control is provided by Thurston County Code. LEGAL DESCMPTION: SEE ATTACHED "EXHIBIT A" RECITALS WHEREAS, OWNER is the owner of certain real property in Thurston County, Washington, described as set forth in the legal description contained herein and referred to in this agreement as the "Property". and WHEREAS, In connection with the OWNER'S proposed development of the Property, Thurston County has required and OWNER has agreed to construct stormwater facilities and to implement a pollution source control plan. The stormwater facilities and pollution source control plan were prepared by Hatton Godat Pantier, Inc.for the OWNER'S property and is on file with Thurston County. and WHEREAS, OWNER has constructed improvements, including but not limited to, buildings, pavement, and stormwater facilities on the Property, in order to further the goals of Thurston County to ensure the protection and enhancement ofthurston County's water resources, THURSTON COUNTY and OWNER hereby enter into this Agreement. The responsibilities of each party to this Agreement are identified below. OWNER SHALL: (1) Implement the stormwater facility maintenance program included herein as Attachment "A". (2) Implement the pollution source control program included herein as Attachment "B".

6 (3) Maintain a record (in the form of a log book) of steps taken to implement the programs referenced in (1) and (2) above. The log book shall be available for inspection by THURSTON COUNTY at 7027 Martin Way E, Olympia, WA during normal business hours. The log book shall catalog the action taken, who took it, when it was done, how it was done, and any problems encountered or follow-on actions recommended. Maintenance items ("problems") listed in Attachment "A" shall be inspected as specified in the attached instructions or more frequently if necessary. OWNER is encouraged to photocopy the individual checklists in Attachment "A" and use them to complete its monthly inspections. These completed checklists would then, in combination, comprise the log book. (4) Submit an annual report to THURSTON COUNTY regarding implementation of the programs referenced in (1) and (2) above. The report must be submitted on or before August 31 of each calendar year and shall contain, at a minimum, the following: (a) Name, address, and telephone number of the business, the person, or the firm responsible for plan implementation, and the person completing the report, (b) Time period covered by the report. (c) A chronological summary of activities conducted to implement the programs referenced in (1) and (2) above. A photocopy of the applicable sections of the log book, with any additional explanation needed, shall normally suffice. For any activities conducted by paid parties not affiliated with OWNER, include a copy of the invoice for services. (d) An outline of planned activities for the next year. (5) Prevent any unauthorized modifications to the drainage system and prevent it from being dismantled, revised, altered or removed except as necessary for maintenance, repair or replacement. Any such actions will be covered under item 4 above and shall be approved of by THURSTON COUNTY. Modifications to the stormwater quantity control and stormwater quality system must be approved in advance by THURSTON COUNTY and may require the submittal of revised design drawings, supporting calculations, modifications to maintenance requirements, and applications for permits. THURSTON COUNTY WILL, AS RESOURCES ALLOW: (1) Provide technical assistance to OWNER in support of its operation and maintenance activities conducted pursuant to its maintenance and source control programs. Said assistance shall be provided upon request, as County time and resources permit and at no charge to OWNER. (2) Review the annual report and conduct occasional site visits to discuss performance and problems with OWNER. (3) Review this Agreement with OWNER and modify it as necessary.

7 REMEDIES: (1) If THURSTON COUNTY determines that maintenance or repair work is required to be done to the stormwater facility existing on the OWNER'S property, THURSTON COUNTY shall give OWNER, and the person or agent in control of said property if different, written notice in accordance with the Notice Section of this Agreement, of the specific maintenance and/or repair required. THURSTON COUNTY shall set a reasonable time in which such work is to be completed by the persons who were given notice. If the above required maintenance and/or repair is not completed within the time set by THURSTON COUNTY, written notice will be sent to the persons who were given notice stating THURSTON COUNTY' S intention to perform such maintenance and bill the owner for all incurred expenses. THURSTON COUNTY may also adjust stormwater utility charges if required maintenance is not performed. (2) If at any time THURSTON COUNTY determines that the existing system creates any imminent threat to public health, welfare or water quality THURSTON COUNTY may take immediate measures to remedy said threat. No notice to the persons listed in Remedies (1), above, shall be required under such circumstances, however, THURSTON COUNTY shall take reasonable steps t o immediately notify OWNER of such imminent threat to the public health and welfare. All other responsibilities shall remain in effect. (3) OWNER grants unrestricted authority to THURSTON COUNTY for access to any and all stormwater system features for the purpose of routine inspections and/or performing maintenance, repair and/or retrofit as may become necessary under Remedies (1) and/or (2). (4) OWNER shall assume all responsibility for the cost of any maintenance and for repairs to the stormwater facility. Such responsibility shall include reimbursement to THURSTON COUNTY within 30 days of the receipt of the invoice for any such work performed. Overdue payments will require payment of interest at the current legal rate for liquidated judgments. If legal action ensues, any costs or fees incurred by THURSTON COUNTY will be borne by the parties responsible for said reimbursements. (5) OWNER hereby grants to the THURSTON COUNTY a lien against the above-described property in an amount equal to the cost incurred by THURSTON COUNTY to perform the maintenance or repair work described herein. NOTICE: Whenever a party is required or permitted under this Agreement to provide the other party with any notice, request, demand, consent, or approval ("Notice"), such Notice will be given in writing and will be delivered to the other party at the address or facsimile number set forth below: (a) personally; (b) by a reputable overnight courier service; (c) by certified mail, postage prepaid, return receipt requested; or (d) by or facsimile transmission. A party may change its address for Notice by written notice to the other party delivered in the manner set forth above. Notice will be deemed to have been duly given: (i) on the date personally delivered; (ii) one (1) business day after delivery to an overnight courier service with nextday service requested; (iii) on the third (3rd) business day after mailing, if mailed using certified mail; or (iv) on the date sent when delivered by facsimile or (so long as the sender sends such facsimile or on a business day and receives electronic confirmation of receipt and a copy of the Notice is sent by one of the other means permitted hereunder on or before the next business day). The initial addresses for Notice are as follows:

8 IF TO OWNER: Robert Coit Thurston County Food Bank 220 Thurston Ave NE Olvmpia, WA Telephone: (360) Fax: director(%thurstoncountvfoodbank.or& IF TO THURSTON COUNTY: Thurston County Storm and Surface Water Utility 2000 Lakeridge Dr SW Bldg. 4, Room 100 Olympia, WA Telephone: (360) Web:

9 This Agreement is intended to protect the value and desirability of the real property described above and to benefit all the citizens of the County. It shall run with the land and be binding on all parties having or acquiring from OWNER or their successors any right, title, or interest in the property or any part thereof, as well as their title, or interest in the property or any part thereof, as well as their heirs, successors, and assigns. They shall inure to the benefit of each present or future successor in interest of said property or any part thereof, or interest therein, and to the benefit of all citizens ofthurston COUNTY. Dated at _, Washington, this _ day of_, _. OWNER By: Title STATE OF WASHINGTON ) ) ss COUNTY OF THURSTON ) On this day and year above personally appeared before me, known to be the of, the company that executed the forgoing instrument, and acknowledged the said instrument to be the free and voluntary act and deed of said company, for the uses and purposes therein mentioned, and on oath stated that he is authorized to execute the said instrument. Given under my hand and official seal this _ day of_, _. Notary Public in and for the State of Washington, residing in My commission expires Dated at _, Washington, this _ day of APPROVED as to form only May 11,2011: ACCEPTED BY: for THURSTON COUNTY Date

10 Stormwater Facilities Maintenance Program Introduction What Is Stormwater Runoff? When urban and suburban development covers the land with buildings, streets and parking lots, much of the native topsoil, duff, trees, shrubs and grass are replaced by asphalt and concrete. Rainfall that would have soaked directly into the ground instead stays on the surface as stormwater runoff making its way into storm drains (including man-made pipes, ditches or swale networks), stormwater ponds, surface and groundwater and, eventually, to Puget Sound. What Is a Storm Drain System and How Does It Work? The storm drain system for most developments includes measures to carry, store, cleanse and release the stormwater. Components work together to reduce the impacts of development on the environment. Impacts can include flooding that results in property damage and blocked emergency routes, erosion that can cause damage to salmon spawning habitat and pollution that harms fish and/or drinking water supplies. The storm drain system provides a safe method to carry stormwater to the treatment and storage area. Swales and ponds filter pollutants from the stormwater by physically settling out particles, chemically binding pollutants to pond sediments and biologically converting pollutants to less harmful compounds. Ponds also store treated water, releasing it gradually to a nearby stream or to groundwater. What Does Stormwater Runoff Have to Do With Water Quality? Stormwater runoff must be treated because it carries litter, oil, gasoline, fertilizers, pesticides, pet wastes, sediments and anything else that can float, dissolve or be swept along by moving water. Left untreated, polluted stormwater can reach nearby waterways where it can harm and even kill aquatic life. It can also pollute groundwater to the extent that it requires treatment before it is suitable for drinking. Nationally, stormwater is recognized as a major threat to water quality. Remember to keep everything out of stormwater systems except the rainwater they are designed to collect. Stormwater Facilities Different types of ponds are designed for different purposes. For example, wet ponds primarily provide treatment of stormwater. Dry ponds or infiltration ponds are designed to provide storage for stormwater and allow for its gradual release downstream or into the ground. Who Is Responsible for Maintaining Stormwater Facilities? All stormwater facilities require maintenance. Regular maintenance ensures proper functioning and preserves visual appeal. This Stormwater Facility Maintenance Guide was designed to explain how stormwater facilities work and provide user-friendly, straightforward guidance on facility maintenance. You are responsible for regularly maintaining privately owned ponds, catch basins, LACEY FOOD BANK PAGE 8

11 pipes and other drainage facilities on your property. Stormwater facilities located in public rights-ofway are maintained by local governments. How to Use the Stormwater Facility Maintenance Guide This Maintenance Guide includes a Site Plan specific to your development and a Facility Key that identifies the private stormwater facilities you are responsible for maintaining. A "Quick List" of maintenance activities has also been included to help you identify the more routine needs of your facility. Included in This Guide Comprehensive Maintenance Checklists that provide specific details on required maintenance Pollution Prevention Tips that list ways to protect water quality and keep storm drain systems functioning smoothly Resources to provide more information and technical assistance A Regional Approach to Stormwater Management The Cities of Lacey, Olympia and Tumwater together with Thurston County are taking steps to educate and involve area residents in water quality issues and stormwater management. Stormwater runoff is a widespread cause of water quality impairment and stream degradation. The jurisdictions are working together with residents, businesses, community groups and schools to address this problem. This guide focuses on providing information on ways that you can reduce stormwater impacts through pollution prevention and proper facility maintenance. Your Stormwater Facilities This section consists of two parts that are to be used together: the Facility Key and the Site Plan. Review the site plan and identify the numbers denoting a feature of the system. Then check the facility key for the feature type and checklist name. Facility Key The stormwater facility in your neighborhood is comprised of the following elements: Type of Feature and Checklist Name Catch Basins, Manholes and Inlets Energy Dissipaters Conveyance Pipes, Ditches and Swales Bioretention Cells Location on Site Plan LACEY FOOD BANK PAGE 9

12 LACEY FOOD BANK 7027 MARTIN WAY E, OLYMPIA, WA, 98S16 N.T.S. MAINTENANCE PLAN

13 Quick List The following is an abbreviated checklist of the most common types of maintenance required. Please go over this checklist after heavy rains. The list represents minimum maintenance to be performed and should be completed in conjunction with the other checklists for an effective maintenance program. Inspect catch basin grates to see that they are not clogged or broken. Remove twigs, leaves or other blockages. Contact the local jurisdiction to replace the grate if it is broken. Inspect inlet and outlet pipes for blockages. Clear all blockages. Inspect filter strip, swale and pond walls for erosion or caved in areas. Inspect riprap (rocks) at the inlets and outlets of culverts and other pipes. If they are silted in or eroded away, replace them. LACEY FOOD BANK PAGE 11

14 Maintenance Checklists The Maintenance Checklists in this packet are for your use when inspecting the stormwater facilities on your property. This packet has been customized so that only the checklists for your facilities are included. If you feel you are missing a checklist, or you have additional facilities not identified or addressed in this packet, please contact your local jurisdiction. The checklists are in tabular format for ease of use. Each describes the area to inspect, inspection frequency, what to look for and what action to take. A log sheet is included toward the end of the chapter to help you track maintenance of your storm drainage system. Although it is not intended for the maintenance survey to involve anything too difficult or strenuous, there are a few tools that will make the job easier and safer including: A flashlight A long pole or broom handle Some kind of pry bar or lifting tool for pulling manhole and grate covers Gloves A resource list is included in the next chapter. There you will find the phone numbers of the agencies referenced in the tables, as well as the contractors and consultants who designed and constructed your facilities. SAFETY WARNING: In keeping with OSHA regulations, you should never stick your head or any part of your body into a manhole or other type of confined space. When looking into a manhole or catch basin, stand above it and use the flashlight to help you see. Use a long pole or broom handle to check sediment depths in confined spaces. NO PART OF YOUR BODY SHOULD BREAK THE PLANE OF THE OPEN HOLE. LACEY FOOD BANK PAGE 12

15 #1 - Maintenance Checklist for Catch Basins: Drainage System Feature Defect or Problem Condition When Maintenance Is Needed Results Expected When Maintenance Is Performed Maintenance Frequency Completed General "Dump no pollutants" (or similar) stencil or stamp not visible Stencil or stamp should be visible and easily read. Warning signs (e.g., "Dump No Waste- Drains to Stream" or "Only rain down the drain"/ "Puget Sound starts here") painted or embossed on or adjacent to all storm drain inlets. General Trash and Debris Trash or debris which is located immediately in front of the catch basin opening or is blocking inlet capacity by more than 10 percent. No trash or debris located immediately in front of catch basin or on grate opening. General Trash and Debris Trash or debris (in the basin) that exceeds 1/3 of the sump depth as measured from 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 debris surface to the invert of the lowest pipe. No trash or debris in the catch basin. General Trash and Debris Trash or debris in any inlet or outlet pipe blocking more than one-third of its height. Inlet and outlet pipes free of trash or debris. General Trash and Debris Dead animals or vegetation that could generate odors that could cause No dead animals or vegetation present within the catch basin. complaints or dangerous gases (e.g., methane). LACEY FOOD BANK PAGE 13

16 Drainage System Feature Defect or Problem Condition When Maintenance Is Needed Results Expected When Maintenance Is Performed Maintenance Frequency Completed General Sediment Sediment (in the basin) that exceeds 1/3 of the sump depth as measured from 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 No sediment in the catch basin. lowest pipe. General Structure Damage to Frame and/or Top Slab Top slab has holes larger than 2 square inches or cracks wider than one-fourth inch. No holes and cracks in the top slab allowing material to run into the basin. General Structure Damage to Frame and/or Top Slab Frame not sitting flush on top slab, i.e., separation of more than three-fourth inch of the frame from the top slab. Frame not securely attached. Frame is sitting flush on the riser rings or top slab and firmly attached. General Fractures or Cracks in Basin Walls/ Bottom Maintenance person judges that structure is unsound. Basin replaced or repaired to design standards. General Fractures or Cracks in Basin Walls/ Bottom G rout fillet has separated or cracked wider than one-haif-inch and longer than 1 foot at the joint of any inlet/outlet pipe or any evidence of soil particles entering catch basin through cracks. Pipe is regrouted and secure at basin wall. General Settlement/ Misalignment If failure of basin has created a safety, function, or design problem. Basin replaced or repaired to design standards. General Vegetation Vegetation growing across and blocking more than 10 percent of the basin No vegetation blocking opening to basin. opening. General Vegetation Vegetation growing in inlevoutlet pipe joints that is more than 6 inches tall and less than 6 inches apart. No vegetation or root growth present. LACEY FOOD BANK PAGE 14

17 Drainage System Feature Defect or Problem Condition When Maintenance Is Needed Results Expected When Maintenance Is Performed Maintenance Frequency Completed General Contamination and Pollution Any evidence of oil, gasoline, contaminants or other pollutants. No contaminants or pollutants present. (Coordinate removal/cleanup with Thurston County Water Resources and/or Dept of Ecology Spill Response ) Catch Basin Cover Cover Not in Place Cover is missing or only partially in place. Any open catch basin requires Catch basin cover is in place and secured. maintenance. Catch Basin Cover Locking Mechanism Not Working Mechanism cannot be opened by one maintenance person with proper tools. Bolts into frame have less than one-halfinch of th read. Mechanism opens with proper tools. Catch Basin Cover Cover Difficult to Remove One maintenance person cannot remove lid after applying normal lifting pressure. (Intent is keep cover from sealing off Cover can be removed by one maintenance person. access to maintenance.) Ladder Ladder Rungs Unsafe Ladder is unsafe due to missing rungs, not securely attached to basin wall, misalignment, rust, cracks, or sharp edges. Ladder meets design standards and allows maintenance person safe access. Grates Grate Opening Unsafe Grate with opening wider than seveneighths of an inch. Grate opening meets design standards. Grates Trash and Debris Trash and debris that is blocking more than 20 percent of grate surface inletting Grate free of trash and debris. capacity. Grates Damaged or Missing Grate missing or broken member(s) of the grate. Grate is in place and meets design standards. If you are unsure whether a problem exists, contact a professional engineer. LACEY FOOD BANK PAGE 15

18 #2 - Maintenance Checklist for Energy Dissipaters: Drainage System Feature Defect or Problem Condition When Maintenance Is Needed Results Expected When Maintenance Is Performed Maintenance Frequency Completed External: Rock Pad Missing or Moved Rock Only one layer of rock exists above native soil in area five square feet or larger, or any exposure of native soil. Rock pad replaced to design standards. Rock Pad Erosion Soil erosion in or adjacent to rock pad. Rock pad replaced to design standards. Dispersion Trench Pipe Plugged with Sediment Accumulated sediment that exceeds 20 percent of the design depth. Pipe cleaned/flushed so that it matches design. Dispersion Trench Not Discharging Water Properly Visual evidence of water discharging at concentrated points along trench (normal condition is a "sheet flow" of water along trench). Intent is to prevent erosion damage. Water discharges from feature by sheet flow. Trench redesigned or rebuilt to standards. Dispersion Trench Perforations Plugged Over one-half of perforations in pipe are plugged with debris and sediment. Perforations freely discharge flow. Perforated pipe cleaned or replaced. Dispersion Trench Water Flows Out Top of "Distributor" Catch Basin Water flows out of distributor catch basin during any storm less than the design storm or is causing or appears likely to cause damage. No flow discharges from distributor catch basin. Facility rebuilt or redesigned to standards. Dispersion Trench Receiving Area Over-Saturated Water in receiving area is causing or has potential of causing landslide problems. No danger of landslides. LACEY FOOD BANK PAGE 16

19 #3 - Maintenance Checklist for Conveyance Systems (Pipes and Ditches): Drainage System Feature Defect or Problem Condition When Maintenance Is Needed Results Expected When Maintenance Is Performed Maintenance Frequency Completed Pipes Sediment & Debris Accumulated sediment that exceeds 20 percent of the diameter of the pipe. Pipe cleaned of all sediment and debris. Pipes Vegetation Vegetation that reduces free movement of water though pipes. Vegetation does not impeded free movement of water through pipes. Prohibit use of sand and sealant application and protect from construction runoff. Pipes Damaged (Rusted, Bent or Crushed) Protective coating is damaged: rust is causing more than 50 percent deterioration to any part of pipe. Pipe repaired or replaced. Pipes Damaged (Rusted, Bent or Crushed) Any dent that significantly impedes flow (i.e. decreases the cross section area of pipe by more than 20 percent). Pipe repaired or replaced. Pipes Damaged (Rusted, Bent or Crushed) Pipe has major cracks or tears allowing groundwater leakage. Pipe repaired or replaced. Open Ditches Trash & Debris Dumping of yard wastes such as grass clippings and branches. Unsightly accumulation of nondegradable materials such as glass, plastic, metal, foam, and coated No trash or debris present. Trash and debris removed and disposed of as prescribed by the County. paper. Open Ditches Sediment Buildup Accumulated sediment that exceeds 20 percent of the design depth. Ditch cleaned of all sediment and debris so that it matches design. Open Ditches Vegetation Vegetation (e.g. weedy shrubs or saplings) that reduces free movements of water through ditches. Water flows freely though ditches. Grassy vegetation should be left alone. LACEY FOOD BANK PAGE 17

20 Drainage System Feature Defect or Problem Condition When Maintenance Is Needed Results Expected When Maintenance Is Performed Maintenance Frequency Completed Open Ditches Erosion Damage to Slopes Erosion damage over 2 inches deep where cause of damage is still present or where there is potential for continued erosion. No erosion damage present. Slopes stabilized using appropriate erosion control measure(s); e.g., rock reinforcement, planting of grass, compaction. Open Ditches Erosion Damage to Slopes Any erosion obsen/ed on a compacted berm embankment. If erosion is occurring on compacted berms a professional engineer should be consulted to resolve source of erosion. Open Ditches Rock Lining Out of Place or Missing (If Applicable) Native soil is exposed beneath the rock lining. Rocks replaced to design standards. If you are unsure whether a problem exists, contact a professional engineer. LACEY FOOD BANK PAGE 18

21 #4 - Maintenance Checklist for Bioretention (Cells, Swales, and Planter Boxes): Drainage System Feature Defect or Problem Condition When Maintenance Is Needed Results Expected When Maintenance Is Performed IVIaintenance Frequency Completed General Trash Trash and debris present. No trash and debris present. Concrete Sidewalls Cracks or Failure in Concrete Planter Reservoir Cracks wider than 0.5 inch or maintenance/inspection personnel determine that the planter is not structurally sound. Concrete repaired or replaced. Rockery Sidewalls Instable Rockery Rock walls are insecure. Rockery sidewalls are stable (may require consultation with professional engineer, particularly for walls 4 feet or greater in height). Earthen Side Slopes and Berms Failure in Earthen Reservoir (Embankments, Dikes, Berms, and Side Slopes) Erosion (gullies/rills) greater than 2 inches around inlets, outlet, and along side slopes. Source of erosion eliminated and damaged area stabilized (regrade, rock, vegetation, erosion control blanket). For deep channels or cuts (over 3 inches in ponding depth), temporary erosion control measures are in place until permanent repairs can be made. Earthen Side Slopes and Berms Failure in Earthen Reservoir (Embankments, Erosion of sides causes slope to become a hazard. The hazard is eliminated and slopes are stabilized. Dikes, Berms, and Side Slopes) LACEY FOOD BANK PAGE 19

22 Drainage System Feature Defect or Problem Condition When Maintenance Is Needed Results Expected When Maintenance Is Performed Maintenance Frequency Completed Earthen Side Slopes and Failure in Earthen Resen/oir Settlement greater than 3 inches (relative to undisturbed sections of The design height is restored with additional Berms Embankments, berm). mulch. Dikes, Berms, and Side Slopes) Earthen Side Slopes and Berms Failure in Earthen Reservoir (Embankments, Dikes, Berms, and Side Slopes) Downstream face of berm or embankment wet, seeps or leaks evident. Holes are plugged and berm is compacted. May require consultation with professional engineer, particularly for larger berms. Earthen Side Slopes and Berms Failure in Earthen Reservoir (Embankments, Any evidence of rodent holes or water piping around holes if facility acts as dam or berm. Rodents (see "Pests: Insects/Rodents") removed or destroyed and berm repaired/ Dikes, Berms, and Side Slopes) compacted. Ponding Area Sediment or Debris Accumulation Accumulation of sediment or debris to extent that infiltration rate is reduced (see "Ponded water") or surface storage capacity significantly impacted. Sediment cleaned out to restore facility shape and depth. Damaged vegetation is replaced and mulched. Source of sediment identified and controlled (if feasible). Ponding Area Leaf Accumulation Accumulated leaves in facility. No leaves clogging outlet structure or impeding water flow. Ponding Area Basin Inlet via Surface Flow Soil is exposed or signs of erosion are visible. Erosion sources repaired and controlled. Curb Cut Inlet Sediment or Debris Accumulation Sediment, vegetation, or debris partially or fully blocking inlet structure. Curb cut is clear of debris. Source of the blockage is identified and action is taken to prevent future blockages. LACEY FOOD BANK PAGE 20

23 Drainage System Feature Defect or Problem Condition When Maintenance Is Needed Results Expected When Maintenance Is Performed Maintenance Frequency completed Splash Block Inlet Water Not Properly Directed to Facility Water is not being directed properly to the facility and away from the inlet structure. Blocks are reconfigured to direct water to facility and away from structure. Splash Block Inlet Erosion Water disrupts soil media. Splash block is reconfigure/repaired. Inlet/outlet pipe Damaged Pipe Pipe is damaged. Pipe is repaired/replaced. No cracks more than 0.25 inched wide at the joint of inlet/outlet pipes exist. Inlet/outlet pipe Clogged Pipe Pipe is clogged. Pipe is clear of roots or debris. Source of the blockage is identified and action is taken to prevent future blockages. Inlets/outlet and access pathways Blocked Access Maintain access for inspections. Vegetation is cleared within 1 foot of inlets and outlets. Access pathways are maintained. Ponding Area Erosion Water disrupts soil media. No eroded or scoured areas in bioretention area. Cause of erosion or scour addressed. A cover of rock or cobbles or other erosion protection measure maintained (e.g., matting) to protect the ground where concentrated water enters or exits the facility (e.g., a pipe, curb cut or swale). Trash Rack Trash or Debris Accumulation Trash or debris present on trash rack. No trash or debris on trash rack. Clean and dispose trash. LACEY FOOD BANK PAGE 21

24 Drainage System Feature Defect or Problem Condition When Maintenance Is Needed Results Expected When Maintenance Is Performed Mlaintenance Frequency Completed Trash Rack Damaged Trash Rack Bar screen damaged or missing. Barrier repaired or replaced to design standards. Check Dams and Weirs Sediment or Debris Accumulation Sediment, vegetation, or debris accumulated at or blocking (or having the potential to block) check dam, weir, or orifice. Blockage is cleared. Identify the source of the blockage and take actions to prevent future blockages. Check Dams and Weirs Erosion Erosion and/or undercutting is present. No eroded or undercut areas in bioretention area. Cause of erosion or undercutting addressed. Check dam or weir is repaired. Check Dams and Weirs Unlevel Top of Weir Grade board or top of weir damaged or not level. Weir restored to level position. Flow Spreader Sediment Accumulation Sediment blocks 35 percent or more of ports/notches or, sediment fills 35 percent Sediment removed and disposed of. or more of sediment trap. Flow Spreader Damaged or Unlevel Grade Board/Baffle Grade board/baffle damaged or not level. Board/baffle removed and reinstalled to level position. Overflow/ emergency spillway Sediment or Debris Accumulation Overflow spillway is partially or fully plugged with sediment or debris. No sediment or debris in overflow. Overflow/ emergency spillway Erosion Native soil is exposed or other signs of erosion damage are present. Erosion repaired and surface ofspillway stabilized. Overflow/ emergency spillwav Missing Spillway Armament Spillway armament is missing. Armament replaced. LACEY FOOD BANK PAGE 22

25 Drainage System Feature Defect or Problem Condition When Maintenance Is Needed Results Expected When Maintenance Is Performed Maintenance Frequency Completed Underdrain Blocked Underdrain Plant roots, sediment or debris reducing capacity of underdrain. Prolonged surface ponding (see "Bioretention Soil"). Underdrains and orifice are free of sediment and debris. Bioretention soil Ponded Water Excessive ponding water: Water overflows during storms smaller than the design event or ponded water remains in the basin 48 hours or longer after the end of a Cause of ponded water is identified and addressed: 1. Leaf or debris buildup is removed storm. 2. Underdrain is dear 3. Other water inputs (e.g., groundwater, illicit connections) investigated 4. Contributing area verified If steps #1-4 do not solve the problem, imported bioretention soil is replaced and replanted. Bioretention soil Protection of Soil Maintenance requiring entrance into the facility footprint. Maintenance is performed without compacting bioretention soil media. I Vegetation Bottom Swale and Upland Slope Vegetation Less than 75 percent of swale bottom is covered with healthy/ surviving vegetation. Plants are healthy and pest free. Cause of poor vegetation growth addressed. Bioretention area is replanted as necessary to obtain 75 percent survival rate or greater. Plant selection is appropriate for site growing conditions. LACEY FOOD BANK PAGE 23

26 Drainage System Feature Defect or Problem Condition When Maintenance Is Needed Results Expected When Maintenance Is Performed Maintenance Frequency Completed Trees and shrubs Causing Problems for Operation of Facility Large trees and shrubs interfere with operation of the basin or access for maintenance. Trees and shrubs do not hinder facility performance or maintenance activities. Prune or remove large trees and shrubs. Trees and shrubs Dead Trees and Shrubs Standing dead vegetation is present. Trees and shrubs do not hinder facility performance or maintenance activities. Dead vegetation is removed and cause of dead vegetation is addressed. Specific plants with high mortality rate are replaced with more appropriate species. 1 Trees and shrubs adjacent to I vehicle travel I areas (or areas I where visibility needs to be maintained) Safety Issues Vegetation causes some visibility (line of sight) or driver safety issues. Appropriate height for sight clearance is maintained. Regular pruning maintains visual sight lines for safety or clearance along a walk or drive. Tree or shrub is removed or transplanted if presenting a continual safety hazard. Emergent Vegetation Conveyance Blocked Vegetation compromises conveyance. Sedges and rushes are clear of dead foliage. Mulch Lack of Mulch Bare spots (without much cover) are present or mulch covers less than 2 inches. Facility has a maximum 3-inch layer of an appropriate type of mulch and mulch is kept away from woody stems. Vegetation Accumulation of Clippings Grass or other vegetation clippings accumulate to 2 inches or greater in depth. Clippings removed. LACEY FOOD BANK PAGE 24

27 Drainage System Feature Defect or Problem Condition When Maintenance Is Needed Results Expected When Maintenance Is Performed Maintenance Frequency Completed Noxious Weeds Presence of Noxious Weeds Listed noxious vegetation is present. See Thurston County noxious weed list. Noxious and nuisance vegetation removed according to applicable regulations. No danger of noxious vegetation where County personnel or the public might normally be. It is strongly encouraged that herbicides and pesticides not be used in order to protect water quality. Vegetation Weeds Weeds are present (unless on edge and providing erosion control). Weed material removed and disposed of. It is strongly encouraged that herbicides and pesticides not be used in order to protect water quality. Excessive Vegetation Adjacent Facilities Compromised Low-lying vegetation growing beyond facility edge onto sidewalks, paths, or street edge poses pedestrian safety hazard or may clog adjacent permeable pavement surfaces due to associated leaf litter, mulch, and soil. Vegetation does not impede function of adjacent facilities or pose as safety hazard. Groundcovers and shrubs trimmed at facility edge. Excessive leaf litter is removed. Excessive Vegetation Causes Facility to Not Function Properly Excessive vegetation density inhibits stormwater flow beyond design ponding or becomes a hazard for pedestrian and vehicular circulation and safety. Pruning and/or thinning vegetation maintains proper plant density and aesthetics. Plants that are weak, broken, or not true to form are removed or replaced in-kind. Appropriate plants are present. Irrigation (if any) NA Irrigation system present. Manufacturer's instructions for O&M are met. LACEY FOOD BANK PAGE 25

28 Drainage System Feature Defect or Problem Condition When Maintenance Is Needed Results Expected When Maintenance Is Performed Maintenance Frequency Completed Plant watering Plant Establishment Plant establishment period (1-3 years). Plants are watered as necessary during periods of no rain to ensure plant establishment. Summer Watering (after establishment) Drought Period Longer term period (3+ years). Plants are watered as necessary during drought conditions and trees are watered up to five years after planting. Spill Prevention and Response Spill Prevention Storage or use of potential contaminants in the vicinity of facility. Spill prevention measures are implemented whenever handling or storing potential contaminants. Spill Prevention and Response Spill Response Any evidence of contaminants such as oil, gasoline, concrete slurries, paint, etc. Spills are cleaned up as soon as possible to prevent contamination of stormwater. No contaminants or pollutants present. (Coordinate source control, removal, and/or cleanup with Thurston County Water Resources and/or Dept. of Ecology Spill Response ) Safety Safety (Slopes) Erosion of sides causes slope to exceed 1:3 or otherwise becomes a hazard. Actions taken to eliminate the hazard. Safety Safety (Hydraulic Structures) Hydraulic structures (pipes, culverts, vaults, etc.) become a hazard to children playing in and around the facility. Actions taken to eliminate the hazard (such as covering and securing any openings). LACEY FOOD BANK PAGE 26

29 Drainage System Feature Defect or Problem Condition When Maintenance Is Needed Results Expected When Maintenance Is Performed Mlaintenance Frequency Completed Aesthetics Aesthetics Damage/vandalism/debris accumulation. Facility restored to original aesthetic conditions. Aesthetics Edging Grass is starting to encroach on swale. Edging repaired. Pest Control Pests: Insects/Rodents Pest of concern is present and impacting facility function. Pests removed or destroyed and facility returned to original functionality. Do not use pesticides or Bacillus thuringiensis israelensis (Bti). Pest Control Mosquitoes Standing water remains in the basin for more than three days following storms. All inlets, overflows and other openings are protected with mosquito screens. No mosquito infestation present. If you are unsure whether a problem exists, contact a professional engineer. LACEY FOOD BANK PAGE 27

30 Resource Listing If you suspect a problem exists, please contact your local jurisdiction at one of the numbers below and ask for Technical Assistance. CONTACT NUMBERS Lacey Water Resources (360) Thurston County (Storm & Surface Water) (360) WSU Cooperative Extension (360) DEVELOPER INFORMATION TBD ENGINEER'S INFORMATION HATTON GODAT PANTIER 3910 Martin Way E., Suite B Olympia, WA (360) LACEY FOOD BANK PAGE 28

31 Log Sheet Use log sheets to track maintenance checks and what items, if any, are repaired or altered. Make copies of this page; use a fresh copy for each inspection. The completed sheets will serve as a record of maintenance activity and will provide valuable information about how your facilities are operating. Log sheets should be kept in a dry, readily accessible place. INSPECTION DATE: PERFORMED BY: PHONE NUMBER: POSITION ON HOA: ADDRESS: CITl', ST, ZIP: OBSERVATIONS PART OF FACILITY (LIST REQUIRED IVIAINTENANCE DATE OF INSPECTED ACTIVITIES) ACTION TAKEN ACTION LACEY FOOD BANK PAGE 29

32 Pollution Source Control Program 1.0 Introduction 1.1 OBJECTIVES OF THIS PLAN 1. To implement and maintain best management practices (BMPs) that identify, reduce, eliminate and/or prevent the discharge of stormwater pollutants. 2. To prevent violations of surface water quality, groundwater quality, and sediment management standards. 3. To eliminate the discharges of un-permitted process wastewater, domestic wastewater, non-contact cooling water and other illicit discharges to stormwater drainage systems. 1.2 INSTRUCTIONS FOR PREPARING PLAN To customize this plan for your property/business do the following: 1. Complete the cover page with information on your information. 2. Complete the worksheet included in Attachment A by selecting those activities that apply to your property/business. 3. Copy and include in Attachment B the ap&ljcablel activity ^ based on the activities selected in step 2. Copy the applicable pages of Chapter 4, Volume IV of the Thurston County Drainage Design and Erosion Control Manual that address the activities selected in step Complete Table 2 (Operational Source Control Practices Summary) in Section 4.0 referencing the applicable activity sheets from step 3. Indicate for each activity the required and recommended operational BMPs applicable to your business. 5. If an Emergency Spill Control Plan (SPC) is required, include it as Attachment C. This may be required for some business types. Prepare the plan using the appropriate guidance for your business practices (i.e. fueling, chemical handling, etc.). 6. If an Integrated Pest Management Plan (IPM) is required, include it as Attachment^ If one of your required BMPs is the use of an Integrated Pest Management Plan, prepare the plan using the appropriate guidance and include it as Attachment D. 7. Customize the Annual Report checklist included in Attachment E. This checklist needs to be completed and submitted with the Annual Report required as part of your Stormwater Agreement with Thurston County. If your business/property is not subject to a Stormwater Agreement, this checklist can be used internally to perform routine audits of your source control program. 1.3 ABOUT THIS PLAN All commercial and industrial properties and activities, including multi-family residential complexes (i.e. apartments, condominiums), non-residential special uses, and government facilities in unincorporated Thurston County that have the potential to contribute pollutants to stormwater runoff or directly to receiving waters are required to implement stormwater pollution prevention source control measures. Stormwater runoff may seep into the ground, drain to a storm drain or a drainage ditch, or flow over the ground. LACEY FOOD BANK PAGE 30

33 Regardless of the way runoff leaves your site, it ends up in a stream river, lake, wetland, groundwater or PugetSound. All known, available and reasonable source control BMPs shall be applied. Source control BMPs shall be selected, designed, and maintained in accordance with Volume IV of the Thurston County Drainage Design and Erosion Control Manual. Many people believe that stormwater runoff is "clean" and does not harm water quality. This perception is understandable since the amount of pollution from any one place is not usually significant by itself. But when all these small amounts are combined, they can cause significant pollution problems. Contaminated stormwater can negatively affect every water body it enters. Therefore, this plan provides detailed information to reduce the contamination of surface water, groundwater, and stormwater from the property and/or business. The federal Clean Water Act mandates that cities and counties control the quality of stormwater runoff. One way to achieve this is to implement pollution prevention measures on individual properties. By following the "Best Management Practices" for your business as described in this plan you can do your part to protect our streams, groundwater, and Puget Sound. 1.4 BEST MANAGEMENT PRACTICES... WHAT ARE THEY? Best Management Practices (BMPs) are a set of activities designed to reduce stormwater pollution. BMPs are separated into two broad categories: source control and treatment. Applicable BMPs for your business can be selected from the most recent published edition of the Thurston County Drainage Design and Erosion Control Manual, Volume IV, "Source Control." SOURCE CONTROL BMPs Source control BMPs prevent contaminants from entering stormwater by con^olling them at the source. Source control BMPs prevent contaminants from entering stormwater runoff by controlling them at the source. Some source control BMPs are operational, such as checking regularly for leaks and drips from equipment and vehicles, covering materials that have potential to add pollutants to surface water if rainwater comes in contact with the materials, and minimizing use of pesticides, fertilizers, and insecticides. Other source control BMPs require use of a structure to prevent rainwater from contacting materials that will contaminate stormwater runoff such as providing a covered area or berm to prevent clean stormwater from entering work or storage areas TREATMENT BMPs In contrast, treatments BMPs are structures that treat stormwater to remove contaminants. Treatment BMPs typically require planning, design and construction. A stormwater treatment pond is an example of a treatment BMP. No treatment BMP is capable of removing 100 percent of the contaminants in stormwater and the less contaminants in the stormwater the more effective the treatment BMP is. Just because there is a stormwater collection system serving your property, it does not necessarily mean that the stormwater is treated. Many sites were developed prior to requirements to treat stormwater. Runoff from your property may go directly or indirectly to a stream or wetland without any treatment. LACEY FOOD BANK PAGE 31

34 Keep in mind that runojfjrom your property may go directly or indirectly to a stream or wetland without any treatment. This plan focuses on source control BMPs applicable to the routine practices of your business. 1.5 WHAT'S IN THIS PLAN? This plan should be customized for your business. If you are trying to get a building permit you may be required to submit a copy of this plan, or its equivalent as part of your permit application and then record it with the Thurston County Auditor's office prior to receiving final approval of your project. The plan is divided into sections as follows: Introduction General Principles of Pollution Prevention Operational BIVIPs Applicable to All Facilities Site/Business Specific BIVIPs Attachments o A - Commercial and Industrial Activities Worksheet o B - Applicable Facility Activity Sheets o C - Spill Control Plan (If applicable) o D - Integrated Pest Management Plan (If applicable) o E-Annual Report Checklist o F - Quick Reference Phone Numbers and Web Sites LACEY FOOD BANK PAGE 32