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HomeMy WebLinkAboutO & M ManualAqua-Swirl BMP's Operations and Maintenance Manual For: Outback Steakhouse West Carmel Commons Lot 1 10222 N. Michigan Road Carmel, Indiana 46032 Project #W11.0655 Prepared For: OSI Restaurant Partners LLC. 2202 N. West Shore Blvd., Suite 500 Tampa, Florida 33607 Contact Person: Stacy Miller Telephone: (813) 282-1225 Prepared By: James Wm. O'Bara Checked By: Eric Carter RLA Certified By: James K Shinneman. P.E. Date: 23 December 2011 Revised: Definitions BMP- Best management practices refer to structural or non structural measures designed for the benefit of water quality and quantity. BMP owner- The owner of the BMP, typically the property owner. The BMP owner may also be the lessee of property in the case of long -term leases of commercial and industrial zoned properties. The lessee is considered the BMP owner only if the lease specifically states that construction by the lessee must meet applicable local codes and regulations. Purpose and Specific Narrative For: Outback Steakhouse West Carmel Commons Lot 1 10222 N. Michigan Road Carmel, Indiana 46032 Owner Contact Information: OSI Restaurant Partners LLC. 2202 N. West Shore Blvd., Suite 500 Tampa, Florida 33607 Telephone: (813) 282 -1225 Contact Person: Stacy Miller It is recognized that developed areas, as compared to undeveloped areas, generally have increased imperviousness, decreased infiltration rates, increased runoff rates, and increased concentrations of pollutants such as fertilizers, herbicides, greases, oil, salts and other pollutants. As new development and re- development continues in the City of Carmel, measures must be taken to intercept and filter pollutants from stormwater runoff prior to reaching regional creeks, streams, and rivers. Through the use of Best Management Practices (BMP), stormwater runoff will be filtered and harmful amounts of sediment, nutrients, and contaminants will be removed. The City of Carmel has established a minimum standard that the measurement of the effectiveness of the control of stormwater quality will be based on the management of Total Suspended Solids (TSS). After the approval of the stormwater management permit by the City of Carmel and the commencement of construction activities, the City of Carmel has the authority to conduct inspections of the work being done to ensure full compliance with the provisions of this chapter, this document, and the terms and conditions of the approved permit. Stormwater quality facilities shall be maintained in good condition, in accordance with the Operation and Maintenance procedures and schedules listed in the Indiana Stormwater Quality Manual or this document, and /or the terms and conditions of the approved stormwater permit, and shall not be subsequently altered, revised, or replaced except in accordance with the approved stormwater permit, or in accordance with approved amendments or revisions in the permit. Checklists provided in this O &M Manual must be completed and maintained by the owner. The City of Carmel also has the authority to perform long -term, post construction inspection of all public or privately owned stormwater quality facilities. The inspections will follow the operation and maintenance procedures included in this document and /or permit application for each specific BMP. The inspection will cover physical conditions, available water quality storage capacity and the operational condition of key facility elements. Noted deficiencies and recommended corrective action will be included in an inspection report. Best management practices (BMPs), both structural and non structural, can reduce the amount of pollutants in stormwater. This site will utilize an offline AquaSwirl Model AS -3 unit. Owner Acknowledgment This Operation and Maintenance Manual is submitted to the City of Carmel with the intent to insure the longevity and adequate functioning of the BMP's owned by OSI Restaurant Partners LLC. By submitting this Operation and Maintenance Manual to the City of Carmel's Office the BMP owner noted above agrees to follow and abide by the inspection schedule and maintenance activities listed in this manual. The BMP owner noted above is responsible for any additional maintenance and/or repair activities to maintain the function and longevity of the BMP(s). Owner Signature: Date Printed SS: COUNTY OF HAMILTON STATE OF INDIANA BEFORE ME, the undersigned, a Notary Public in and for said County and State, personally appeared Owners, /Agent, subscribed and sworn before me this day of County of Residence Signature Commission Expiration Date Printed Name Aqua -Swirl TM Operation, Maintenance, and Inspection Manual for BMP Owners City of Carmel, Indiana (Note: Attach certifications for local regulatory authority including any applicable fees.) Site Name: Outback Steakhouse Owner Name: Owner Address: Owner Phone Number: Emergency Phone Number: Location: Date: Time: Inspector Name: Figure 1 Site and Owner Information OSI Restaurant Partners LLC. 2202 N. West Shore Blvd., Suite 500 Tampa, Florida 33607 (813) 282 -1225 10222 N. Michigan Road Carmel, Indiana 46032 Maintenance Items Inspection, Floatable Debris and Oil 1. Remove manhole lid to expose liquid surface of Aqua SwirI 2. Remove floatable debris with basket or net if any is present. 3. If a hydrocarbon spill has occurred, (e.g. more than a sheen of oil or gas is present) the system should be cleaned immediately (see "Cleaning" Figure 3). Note: Water in an Aqua SwirI can appear black like oil due to the dark body of the surrounding structure. Oil appears darker than water in the system and is usually accompanied by debris (e.g. Styrofoam, etc.) with obvious signs of oil stains. The depth of oil can be measured with an oil /water interface probe, a stadia rod with water phylic paste, a coliwasa, or by simply collecting a representative sample with a jar attached to a rod. 4. If hydrocarbon absorbant floc or pads are used, these should be inspected to determine whether they are loaded with hydrocarbons. This will be indicated by a dark colaration of the pad or floc. Pads and /or floc should be removed and disposed of in accordance with City of Indianapolis and any applicable state and /or federal laws if they contain hydrocarbons. Sediment Accumulation Lower a dipstick tube equipped with a ball valve (e.g. Sludge Judge or similar device) into Aqua SwirI through the service access provided. Measure the depth of the sludge. At a maximum, the sludge should not exceed 36" depth before maintenance. See Figures 1 and 2. 36" Aqua- Swirl 0 and M Manual Page 1 Change in ownership since last inspection? Y N Figure 2 Remove sediments, oils and other floatable pollutants with a vactor. Dispose of all waste in accordance with City of Indianapolis and any applicable state, and /or federal requirements. Oil should be pumped and removed with any liquids and sediments that have been trapped in the system. These liquids should be taken to an industrial waste water treatment facility for treatment. Liquids and solids pumped from the AquaSwirl should not be dumped back into the stormwater system or into a sanitary sewer. Inspection (continued) Cleaning Diversion Structures If an external diversion structure is present on the site, this should be inspected for the following items. 1. Inspect weir or other structure for structural decay or damage. Weirs are more susceptible to damage than off -set piping and should be checked to confirm that they are not crumbling or decaying. 2. Inspect diversion structure and by -pass piping for signs of structural damage or blockage from debris or sediment accumulation. 3. Measure elevations on diversion weir or piping to ensure it is consistent with site plan design. 4. Inspect downstream structure in diversion system for signs of blockage or structural failure. Figure 3 Note: The AquaSwirl is designed so that entry to the system is not necessary for inspection or maintenance. If, however, you wish to enter the system, this is an OSHA confined space entry and OSHA confined space entry procedures should be followed to enter the system. aintenance Schedule During Construction Inspect the AquaSwirl every three months (minimum) and clean the system as needed. The AquaSwirl should be inspected and cleaned at the end of construction regardless of whether it has reached its sediment or oil storage capacity. First Year Post Construction Inspect the AquaSwirl every six months and clean the system as needed. Inspect and clean the system at least once bi- annually regardless of whether it has reached its sediment or floatable pollutant storage capacity. Second and Subsequent Years Post Construction If the AquaSwirl' did not reach full sediment or floatable pollutant capacity in the First Year Post Construction, the system can be inspected once annually and cleaned as need or bi- annually at a minimum. If the AquaSwirl reached full sediment or floatable pollutant capacity in less than 12 months in the First Year Post Construction, the system should be inspected once every six months and cleaned as needed. The AquaSwirl should be cleaned at least bi- annually regardless of whether it reaches its sediment or floatable pollutant capacity. Bypass Structures Bypass structures should be inspected whenever the AquaSwirl is inspected and maintained as needed. Aqua- Swirl 0 and M Manual Page 2 AQUA- SWIRL SPECIFICATION NOTES 1. Manufacturer shall be responsible for complete assembly of Swirl Concentrator. 2. Swirl Concentrator shall be fabricated from high density polyethylene (HDPE) ASTM F 714 cell class 345464C per ASTM D 3350. The Swirl Concentrator wall (greater than 54" OD) shall be fabricated from profile wall HDPE ASTM F 894 RSC 250. 3. HDPE stub outs and internal components shall be extrusion welded using accepted welding practices. Stub outs shall be supplied by Manufacturer and welded on inside and outside. 4. If lifting eyes disturb grade elevation (rim) or concrete pad rebar alignment, they may be cut in field after installation of Swirl Concentrator by Contractor. 5. Manufacturer shall supply direct access to Swirl Concentrator via 32 -inch OD riser(s), which can be field cut to match finished grade by Contractor. 6. Contractor shall supply pipe couplings to and from Swirl Concentrator, which shall be Fernco or Mission style neoprene boot with stainless steel tension bands and shear guard. For corrugated plastic pipe, or pipe with a diameter of 24" or larger, it is recommended that Contractor use a Mar Mac coupling (www.marmac.com), or equal, with adhesive mastic and tightening bands to create a watertight seal around the joint. The joint shall then be immobilized with a concrete collar with compacted base as described in either Note 11 or 12 herein. Mar Mac, or equal, couplings shall overlap the pipe joint a minimum of 1 foot on either side. 7. Contractor shall prepare excavation and off -load Swirl Concentrator. Contractor is responsible for bedding and backfill around Swirl Concentrator as detailed on site plan. (see notes 11 and 12) 8. Manufacturer shall supply standard manhole frame(s) and cover(s). (Traffic rated H20) 9. Where traffic loading (H -20) is required or anticipated, a reinforced concrete pad must be placed over the Swirl Concentrator per concrete design as calculated by Engineer. For systems where the depth from grade to the roof of the chamber is greater than the radius of the chamber, only a 5' X 5' re- enforced concrete pad is necessary. For shallower burials, a pad extending over the entire chamber is required. Sample of typical concrete design detail is available upon request. 10. Unless other traffic barriers are present, bollards shall be placed around access risers in non traffic areas to prevent inadvertent loading by maintenance vehicles. Sample of typical bollard installation detail and recommended locations of bollards around the Swirl Concentrator can be provided upon request. 11. Excavation and Bedding The trench and trench bottom shall be constructed in accordance with ASTM D -2321, Section 6, Trench Excavation, and Section 7, Installation. The HDPE Swirl Concentrator shall be installed on a stable base consisting of 12- inches of Class I stone materials as defined by ASTM D2321, Section 5, Materials, and compacted to 95% proctor density. All required safety precautions for Swirl Concentrator installation are the responsibility of the Contractor. 12. Backfill Requirements Backfill materials shall be Class I Stone or Class II materials (well graded gravels, gravelly sands; contains little or no fines), as defined by ASTM D2321, Section 5, Materials, and compacted to 90% proctor density. Class I stone is preferred. Backfill and bedding materials shall be free of debris. Backfilling shall conform to ASTM F1759, Section 4.2, "Design Assumptions Backfill shall extend at least 42 inches outward from Swirl Concentrator and for the full height of the Swirl Concentrator (including riser(s)) extending laterally to undisturbed soils.