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HomeMy WebLinkAboutO&M Manual OPERATIONS & MAINTENANCE MANUAL FOR STORMWATER INFRASTRUCTURE FOR 12955 Old Meridian Remodel 12955 Old Meridian St. Carmel, IN 46032 Prepared by: Nicholas Vergatos JPS Consulting Engineers 9365 Counselors Row Suite 116 Indianapolis, IN 46240 16 August 2019 Revised 12 December 2019 Parcel No.: 16-09-26-04-02-005.000 “I affirm, under the penalties of perjury, that I have taken reasonable care to redact each Social Security number in this document, unless required by law.” (name)_____________________________________ TABLE OF CONTENTS I. Owner Information II. Site Information III. Stormwater Infrastructure Inventory IV. Routine Maintenance of Storm Infrastructure V. BMP Owner Acknowledgement Agreement Appendix A Vicinity & Location Map Appendix B Stormwater Infrastructure Site Map Appendix C Aquaswirl AS-4 Operation & Maintenance Information STORMWATER INFRASTRUCTURE O&M MANUAL This manual contains information about the maintenance and operations for the new stormwater quality infrastructure on the site for Indiana Spine Group expansion project. I. Owner’s Information Owner: BRU Carmel RE LLC & JKB Properties Contact: Mike Cunningham Address: 241 North Pennsylvania St, Ste 300 Indianapolis, IN 46204 Business Phone: E-mail address: II. Site Information The 12955 Old Meridian Remodel project is located south of Main Street on Old Meridian St in the City of Carmel, Hamilton County. This project is part of a strip mall of retail stores. Site location and vicinity maps are included in Appendix A for reference. III. Stormwater Infrastructure Inventory The storm sewer system for the site consists of existing inlets, manholes, and underground storm sewer pipes, and detention basin. One new Aquaswirl AS-4 unit (BMP) will be installed on the site. The existing detention basin acts as the second BMP unit required by Carmel. Maintenance documents for all the new infrastructure added with this project is included in this document. The existing storm water inlets and pipes convey stormwater runoff south through the site to the existing detention basin. An overall site plan showing the locations of the stormwater infrastructure associated with this project is included in Appendix B. Stormwater detention for the project is provided by the existing detention basin already installed Stormwater Quality for the project is provided by a new Aquaswirl AS-4 unit located on the east side of the new building addition on the existing storm pipes north of the detention basin. The detention basin is the second stormwater quality measure. IV. Routine Maintenance of Storm Infrastructure Inlets Periodically inspect stormwater inlets and end sections and cleanout trash or debris as required to allow free flow of stormwater into the structures. Pipes Periodically inspect pipes for sediment. Remove sediment from pipes when sediment depth is ¼ of the pipe diameter or 6” maximum. BMP A BMP is an acronym for Best Management Practices which is a measure that is designed for the benefit of water quality. A BMP filters and removes sediment and fuel and oil from stormwater run- off before the water discharges from the site. The trapped items are stored in the BMP and must be removed via regular maintenance and properly disposed of. The Aquaswirl AS-4 unit provides stormwater quality for this project and the detail, Operation and Maintenance information, and inspection instructions are included in Appendix C Existing Detention Basin The dry detention basin is existing on the site. Maintenance for the basin is per the Operation and Maintenance Manual that was compiled when the basin was constructed and approved by the City at that time. Annual Reporting Requirements The City of Carmel requires annual reporting of the BMP inspection reports to the Engineering Department. The first report is due one year after construction is completed, with subsequent reports due each year within the same month of the initial report. If there are any deficiencies found during the inspection, these should be addressed. If the inspection report is not received within the month it is due, if there are deficiencies which were not included in the report, or if any deficiencies included in the report are not addressed in a timely manner, the BMP owner faces enforcement action from the City. V. BMP Owner Acknowledgement Agreement Refer to next page for owner responsibilities and requirements for the maintenance of the BMP’s on-site. Owner Acknowledgement Agreement (“Agreement”) For good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the undersigned owner (“Owner”) hereby submits this Operation and Maintenance Manual (“Manual”) to the City of Carmel, Indiana (“City”) as a written acknowledgement of Owner’s warranty and agreement to institute, maintain, and follow the water quality Best Management Practices (“BMPs”) listed below, and to follow and abide by the inspection schedule and maintenance activities listed in this Manual. The Owner also hereby agrees to provide, at Owner’s cost, all additional maintenance, repair, and/or replacement services reasonably necessary to maintain the function and longevity of the BMPs from and including the date this Agreement is executed by Owner to and including the date on which a new Agreement is filed with the City by another party who assumes all of the obligations and responsibilities of Owner as set forth herein. BMPs: ___________________________________________________ ___________________________________________________ ___________________________________________________ _______________________________ ________________________ Owner Signature Date _______________________________ ______________________________ Printed Name Company STATE OF INDIANA ) ) SS: COUNTY OF HAMILTON ) BEFORE ME, the undersigned, a Notary Public in and for said County and State, personally appeared _________________________________ Owner subscribed and sworn before this ____ day of __________________, ________. ______________________________ ______________________________ County of Residence Signature ______________________________ Commission Expiration Date ______________________________ Printed Name APPENDIX A: VICINITY AND LOCATION MAPS LOCATION MAP PROJECT LOCATION VICINITY MAP ADDITION W MAIN STREET EDWARD ROSE DEVELOPMENT ZONING: PUD LAND USE: OFFICE BUILDING ZONING:UC LAND USE: APARTMENTS OLD MERIDIAN STREETZONING: UC LAND USE: COMMERCIAL ZONING: R-1 LAND USE: CARMEL MIDDLE SCHOOL APPENDIX B: STORMWATER INFRASTRUCTURE SITE MAP TJPS Consulting Engineers - K:\Civil Projects\19JPSC26 Meridian Design Center\Drawings\BASIN.dwg August 17, 2019 - 2:29 PM Nvergatos STORMWATERINFRASTRUCTURESITE MAPNO SCALENBVNBVNBVO&MCONSTRUCTIONDOCUMENTS19 AUGUST 201919JPSC26NEW STRUCTURALBMPNEW BMP EASEMENT NEW BUILDING ADDITION 5,940 SQ FT FINISHED FLOOR ELEVATION: 856.20 GM T CO CO CO CO CO APPENDIX C: AQUASWIRL AS-4 OPERATION AND MAINTANCE INFORMATION Phone (888) 344-9044 Fax (423) 826-2112 www.aquashieldinc.com Aqua-Swirl Concentrator Model AS-4 PCS Standard Detail AS-4 PCS STD 01/12/11 Scale: Drawn By: Document: Date: JCW 1:20 U.S. Patent No. 6524473 and other Patent Pending * Please see accompanied Aqua-Swirl specification notes. * See Site Plan for actual system orientation. 2ULHQWDWLRQPD\YDU\IURPƒƒRU custom angles to meet site conditions. 12" [305 mm] PCS Max A Inlet66" [1676 mm] 12" [305 mm] PCS Max 66" [1676 mm] Outlet A ‘ >‘PP@ Pipe coupling by Contractor. 12" long Stub-out by Manufacturer. Pipe coupling by Contractor. 12" long Stub-out by Manufacturer. Vent Arched Baffle Octagonal Base Plate Phone (888) 344-9044 www.aquashieldinc.com Vent Arched Baffle Slide riser over top ring and bolt in 4 placesRiser 68" [1727 mm] 104" [2642 mm] Swirl Inlet Swirl Outlet Bedding Undisturbed Soil Backfill 6" [152 mm] 36" [914 mm] Section A-A Plan View Grade (Rim) 30" [762 mm] Rim elevations to match finished grade. PCS risers should NOT be field cut by Contractor. Manhole Frame and Cover by Manufacturer. (See Details)5" [127 mm] MH Frame Varies ƒ Varies Backfill shall extend at least 3 feet [914 mm] outward from Swirl Concentrator and for the full height of the Swirl Concentrator (including riser) extending laterally to undisturbed soils. (See MH Detail Below) 4 1/2" [114 mm] 1/2" [13 mm] 1" [25 mm] Manhole Frame & Cover Detail NTS For Non-Traffic Areas Only Soil 1" [25 mm] Unless other traffic barriers are present, bollards shall be placed around access riser(s) in non-traffic areas to prevent inadvertent loading by maintenance vehicles. Place small amount of concrete [3,000 psi [20 MPa] (min)] to support and level manhole frame. DO NOT allow manhole frame to rest upon riser. Riser Frame Cover 48" [1219 mm] Min. 12" [305 mm] Wrap Compressible Expansion Joint Material to a minimum 1-inch [25 mm] thickness around top of riser to allow transfer of inadvertent loading from manhole cover to concrete slab. Backfill (90% Proctor Density) Concrete 8" [203 mm] Gravel Backfill 4 1/2" [114 mm] Cover Frame 1" [25 mm] Thick Expansion Joint Material30" [762 mm] Riser #4 [13 mm] Rebar @ 6" [152 mm] Each Way 14" [356 mm]1/2" [13 mm] 3,000 psi [20 MPa] (min) Concrete Manhole Frame & Cover Detail For Traffic Loading Areas NTS If traffic loading (H-20) is required or anticipated, a 4-foot [1.22 m] diameter, 14-inch [356 mm] thick reinforced concrete pad must be placed over the Stormwater Treatment System Riser to support and level the manhole frame, as shown. The top of riser pipe must be wrapped with compressible expansion joint material to a minimum 1-inch [25 mm] thickness to allow transfer of wheel loads from manhole cover to concrete slab. Manhole cover shall bear on concrete slab and not on riser pipe. The concrete slab shall have a minimum strength of 3,000 psi [20 MPa] and be reinforced with #4 [13 mm] reinforcing steel as shown. Minimum cover over reinforcing steel shall be 1-inch [25 mm]. Top of manhole cover and concrete slab shall be level with finish grade. Backfill (90% Proctor Density) 48" [1219 mm] Aqua-Swirl Polymer Coated Steel (PCS) Stormwater Treatment System System Maintenance Table of Contents AQUASHIELD™ PRODUCTS 2 System Maintenance 2 Inspection 3 Aqua-Swirl™ Maintenance 3 Aqua-Swirl™ Inspection Procedure 3 Aqua-Swirl™ Cleanout Procedure 4 Aqua-Swirl™ Inspection Data Sheet 5 Aqua-Swirl™ Maintenance Data Sheet 6 Aqua-Filter™ Maintenance 7 Swirl Pretreatment Chamber 7 Aqua-Filter™ Filtration Chamber 7 Filter Media Disposal 9 Aqua-Filter™ Inspection and Maintenance Data Sheet 10 Aqua-Guardian™ Maintenance 11 2733 Kanasita Drive, Suite B ● Chattanooga, Tennessee 37343 Phone (888) 344-9044 ● Fax (423) 826-2112 www.aquashieldinc.com System Maintenance 2 AquaShield™ Product System Maintenance The long-term performance of the stormwater treatment structures (including manufactured systems, ponds, swales, etc.), and the effective protection of receiving waters, depends on a consistent maintenance plan. Inspection and maintenance functions are simple and easy for the AquaShield™ Stormwater Treatment Systems allowing all inspections to be performed from the surface. An AquaShield™ field representative will be available as needed to assist local maintenance personnel in the field. Please contact us for a copy of a product-specific “Inspection and Maintenance Manual”. It is important that a routine inspection and maintenance program be established for each unit based on (1) the volume or load of the contaminants of concern, (2) the frequency of releases of contaminants at the facility or location, and (3) the nature of the area being drained. In order to ensure that our systems are being maintained properly, AquaShield™ offers a maintenance solution to all of our customers. We will arrange to have maintenance performed. System Maintenance 3 Sediment inspection using a stadia rod Inspection All AquaShield™ products can be inspected from the surface, eliminating the need to enter the systems to determine when cleanout should be performed. In most cases, AquaShield™ recommends a quarterly inspection of the Stormwater Treatment Systems for the first year of operation to develop an appropriate schedule of maintenance. Based on experience of the system’s first year in operation, we recommend that the inspection schedule be revised to reflect the site-specific conditions encountered. Typically, the inspection schedule for subsequent years is reduced to semi-annual inspection. Aqua-Swirl™ Maintenance The Aqua-Swirl™ has been designed to minimize and simplify the inspection and maintenance process. The system can be inspected and maintained completely from the surface, thereby eliminating the need for confined space entry. Furthermore, the entire structure (specifically, the floor) is accessible for visual inspection from the surface. There are no areas of the structure that are blocked from visual inspection or periodic cleaning. Inspection of any free-floating oil and floatable debris can be directly observed and maintained through the manhole access provided directly over the swirl chamber. Aqua-Swirl™ Inspection Procedure To inspect the Aqua-Swirl™, a hook is needed to remove the manhole cover. AquaShield™ provides a customized manhole cover with our logo to make it easy for maintenance crews to locate the system in the field. We also provide a permanent metal information plate attached inside the access riser, which provides our contact information, the Aqua-Swirl™ model size, and serial number. System Maintenance 4 Vacuum truck cleans the Aqua-Swirl™ The only tools needed to inspect the Aqua-Swirl™ system are a flashlight and a measuring device such as a stadia rod or pole. Given the tremendous accessibility provided, floating oil and debris can be observed directly from the surface. Sediment depths can easily be determined by lowering a measuring device to the top of the sediment pile and to the surface of the water. When the sediment pile is within 30 to 36 inches of the water surface, the system should be maintained. It should be noted that in order to avoid underestimating the volume of sediment in the chamber, the measuring device must be carefully lowered to the top of the sediment pile. The finer sediment at the top of the pile, typically offers less resistance to the measuring device than the larger particles. Aqua-Swirl™ Cleanout Procedure Clean out of the Aqua-Swirl™ is simple. Free-floating oil and floatable debris can be observed and removed directly through the 30-inch service access provided. A vacuum truck can be used to remove the accumulated sediment and debris. It is important to note that the entire sediment storage area can be reached with a vacuum hose from the surface (reaching all the sides). Disposal of the material is typically treated in the same fashion as catch basin cleanouts. AquaShield™ recommends that all materials removed be handled and disposed of in accordance with local and state requirements. An “Inspection and Maintenance Manual” is provided with each Aqua-Swirl™ system for more detailed maintenance procedures. On the following page, you will find sample Inspection Data Sheets. System Maintenance 5 Aqua-Swirl™ Inspection Data Sheet Location: Date Inspector Name Distance to Sediment (in.) Distance to Water (in.) Floatable Layer Thickness (describe) Maintenance Required? (yes/no) System Maintenance 6 Aqua-Swirl™ Maintenance Data Sheet Inspector: Date: Location: Time: INSPECTION General Site Condition Visible Evidence of Spills/ Releases (oils, grease, fuels, paints, chemicals): Visible Evidence of Heavy Sediment Deposition: Swirl Condition of Swirl: Condition of Baffle: Distance to Sediment: Distance to Water: **Note: If sediment is less than 30 to 36 inches below water surface, sediment should be removed. CONTAMINATION REMOVAL DATA Floating Oil and Debris Approx. Volume: Description: Elapsed Removal Time: Sediment Approx. Volume: Description: Elapsed Removal Time: Other Comments System Maintenance 7 Floatable debris in the Aqua-Swirl™ Aqua-Filter™ Maintenance Proper maintenance of the Aqua-Filter™ system is needed for the unit to operate efficiently. Typically, inspection of the Aqua-Swirl™ pretreatment chamber and the filtration chamber should be performed on a quarterly basis. Information gathered during the first year of service can be used to create a maintenance plan appropriate for the site. Aqua-Swirl™ Pretreatment Chamber The Aqua-Swirl™ is easily inspected from the surface. Floating debris and free oil can be observed along with the captured stormwater by removing the manhole cover. Sediment depth is determined by lowering a measuring device (e.g. stadia rod) to the top of the sediment pile. When the sediment pile is within 30 to 36 inches from the water surface, cleaning is required. Typically, a vacuum truck is used to first remove the captured floating materials from the water’s surface before lowering the vac-hose into the accumulated sediment pile for its removal. For more detail regarding the inspection and maintenance of the pretreatment chamber, please see the previous Section on the Aqua-Swirl™ Inspection and Maintenance. Aqua-Filter™ Filtration Chamber The filter media is also easily observed from the surface. Manhole covers are spaced over the entire filtration bed to provide easy access. AquaShield™ provides a customized manhole cover with our logo to make it easy for maintenance crews to locate the system in the field. System Maintenance 8 A permanent ladder provides access to filter chamber Grate panels cover the filter media Initially, the filter media is light tan or white in color. When the media color turns black, it has become saturated due to pollutant loading and requires replacement. Call toll free (888) 344-9044 to order replacement filters. An entry riser provides direct access into the filtration chamber with a permanent ladder welded into the downstream section of the chamber. This additional access allows for the vacuuming of any standing water and an unobstructed walkway to the downstream side of the filter bed. Replacement of the filtration media typically requires entry into the filtration chamber by one of a two- member maintenance crew. Confined space entry precautions should be taken by the maintenance crew when removing and replacing the filters. The spent filter containers are normally retrieved from the filter chamber by a second crewmember at the surface through the multiple 30-inch risers spaced across the top of the filter bed. In addition, the filter containers can be accessed directly from within the filtration chamber via a vertical removable panel at the rear of the filter bed. The center row of the filtration bed has been fitted with one inch thick removable fiberglass grate panels. This allows for a six-foot tall walkway down the center of the chamber, providing easy access to the full length of the filtration chamber. Rows of removable side grates are positioned on both sides of the center row. After the center grate panel has been removed, the filter media can be lifted from these side grate panels. After the removable sides have been loaded with replacement filter containers, the removable center grates are repositioned and locked in place. New filters are installed in a criss-cross manner to prevent short-circuiting. System Maintenance 9 Spent filter media can be recycled or sent to a landfill Filter Media Disposal The filter media does not allow captured contaminants to be released once absorbed into the material. This is a unique quality of the Aqua-Filter™, allowing superior performance under extreme conditions. The spent filters and sediment generally do not require any special treatment or handling for disposal. The filtration media can be recycled as fuel material, or sent to a subtitle D landfill. AquaShield™ recommends that all materials removed during the maintenance process be handled and disposed of in accordance with local and state requirements. An “Inspection and Maintenance Manual” is provided with each Aqua-Filter™ system for more detailed maintenance procedures. On the following page, you will find a sample Inspection Data Sheet. System Maintenance 10 Aqua-Filter™ Inspection and Maintenance Data Sheet Inspector: Date: Location: Time: INSPECTION General Site Condition Visible Evidence of Spills/ Releases (oils, grease, fuels, paints, chemicals): Visible Evidence of Heavy Sediment Deposition: Swirl Condition of Swirl: Condition of Baffle: Distance to Sediment: Distance to Water: Note: If sediment is less than 30 inches below water surface, sediment should be removed. Filtration Chamber Condition of Filter Trays: Condition of Filtration Chamber: Color of Filter Media: Note: If filter media is dark brown to black, it should be replaced. CONTAMINATION REMOVAL DATA (if required) Floating Oil and Debris Volume: Description: Elapsed Removal Time: Sediment Volume: Description: Elapsed Removal Time: Filter Media Volume: Description Elapsed Removal Time: System Maintenance 11 The inside of an Aqua-Guardian™ Catch Basin Insert A shop vacuum cleans an Aqua-Guardian™ Catch Basin Insert Aqua-Guardian TM Maintenance A routine inspection and maintenance program should be established by the customer for each Aqua-Guardian™ unit based on the volume or load of the contaminants of concern, the frequency of releases of contaminants at the facility or location, and the nature of the area being drained. Typically, the Aqua- Guardian™ should be inspected monthly and after significant storm events. The Aqua-Guardian™ insert can be visually inspected from the surface without the need to remove the catch basin grate. Simply use a tape measure to gauge the amount of sediment in the collection area. When sediment level reaches the bottom of the perimeter “filter screen outlets”, the unit should be serviced. Servicing the Aqua-Guardian™ is simple. First, remove the grate covering the catch basin. Then with a wet/dry shop-vac, remove the sediment and debris accumulated inside the chamber. The locking centerpiece assembly is removed by rotating the assembly with the “T” handle on top of the filter screen standpipe. Once the centerpiece assembly is removed, the filter bag will be visible so that it can be pulled from the Aqua- Guardian™. Clean out any residual sediment in the filter area and place a new filter bag in the unit. Press down on all sides of the newly installed filter to ensure good contact with the outside walls. The centerpiece assembly is replaced and rotated (or locked) under the fitted guides. The final maintenance step is to replace the surface grate cover to its normal position.