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O&M Manual
Post-Construction Stormwater Quality BMP Operations and Maintenance Manual For: Culver’s - Carmel 431 East Carmel Drive Carmel, IN 46032 Prepared For: Meyer Foods Management Company 1448 Conner Street Noblesville, IN 46060 Phone: (317) 770-4656 Email: bgoins@IndyCulvers.com Contact: Bob Goins Prepared By: Daric E. Gordon, E.I.T. Checked By: Scott S. Rucker, P.E. Date: March 1, 2022 Revised: April 29, 2022 August 17, 2022 October 20, 2022 I AFFIRM, UNDER THE PENALTIES FOR PERJURY, THAT I HAVE TAKEN REASONABLE CARE TO REDACT EACH SOCIAL SECURITY NUMBER IN THIS DOCUMENT, UNLESS REQUIRED BY LAW. – Daric E Gordon. Operation and Maintenance Manual Culver’s Carmel, Indiana Project #W220058 TABLE OF CONTENTS Operation and Maintenance Manual 1. Project Narrative 2. Definitions 3. Owner Acknowledgement 4. Location Maps and Referenced Construction Documents 5. Checklists and Maintenance Activities Mechanical Water Quality Unit Underground Storage System Inlet Filter Insert 6. Reference Materials Prepared For: Operation and Maintenance Manual Recovery Centers of America Indianapolis, Indiana Project #W19-0363 Project Narrative Meyer Foods Management Company is proposing to construct a new Culver’s restaurant on approximately 1.16 acres, located at 431 East Carmel Drive, Carmel, IN 46032, Indiana. Currently, the site is a vacant carwash with existing structures, pavement, depressional storage, storm sewer, and utility lines. located at 8530 Township Line Road in Indianapolis, Indiana. The proposed development is on a site at a Latitude of 39° 57’ 42” N and Longitude 86° 07’ 08” W , located in the Southwest Quarter of Section 31, Township 18 North, Range 4 East, situated in Clay Township, Hamilton County, Indiana. Please refer to Figure 1 as a project location map and Figure 1.1 as a site aerial. Floodzone: Based upon a scaled interpretation of the Federal Emergency Management Agency (FEMA), Flood Insurance Rate Map, Map No. 18057C0228G for Hamilton County, Indiana, effective date November 19, 2014, the subject tract (commercial development) is located within Zone X. Zone X refers to minimal risk areas outside the 1-percent and 0.2 percent-annual-chance floodplains. No Base Flood Elevation (BFE) or depth of potential flooding is shown within this zone. The proposed project will utilize a series of BMP’s, creating a treatment train to achieve the minimum 80% TSS removal. Aqua Guardian inlet inserts will be installed in each catch basin as the first BMP in the treatment train. The captured runoff will then be directed through an Aqua-Swirl XC-3 hydrodynamic separator before entering the underground detention system. Refer to Figure 3 for the location of the inlet filter inserts, hydrodynamic separator, diversion structure for the BMP, and the outlet control structure for the underground detention system. BMP Owner Contact Information: Meyer Foods Management Company 1448 Conner Street Noblesville, IN 46060 Contact: Bob Goins Phone: (317) 770-4656 Definitions Best Management Practice (BMP): Best Management Practices, refer to structural or non-structural measures designed for the benefit of water quality and quantity. Urban stormwater runoff contains many types and forms of pollutants. When compared to stormwater run-off from pre-developed conditions, high concentrations and some contaminants that are not naturally present in surface runoff from undeveloped local lands are found. Runoff from undeveloped watersheds contains metals, nutrients, sediment particles, oxygen-demanding compounds, and other constituents. Once developed, constituent loads increase because surface runoff volumes increase and the sources of many of these pollutants also increase. Supplemental applications of compounds, such as fertilizers, also tend to increase the availability of some pollutants to stormwater runoff. Runoff water quality in urban areas can be extremely detrimental to local habitat. Paved surfaces and standing water bodies for stormwater management control elevate the temperature of water entering streams. Chemicals in standing water and ponds are oxidized, resulting in depressed levels of dissolved oxygen. Increased runoff volumes and rates create scour and deposition damage to instream habitat. Activities in urbanized areas, such as vehicular traffic, deposit pollutants such as heavy metals and oil & grease on paved surfaces where they easily wash off into the streams. BMP Owner: The owner of the BMP, typically the property owner. The BMP owner may also be the lessee of the 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. Mechanical Water Quality Unit: The mechanical water quality unit provides a highly effective means for the removal of sediment, floating debris and free-oil. Swirl technology, or vortex separation, is a proven form of treatment utilized in the stormwater industry to accelerate gravitational separation. The WQU provides treatment for most contaminated first flush, while the cleaner peak storm flow is diverted and channeled through the main conveyance pipe. A combination of gravitational and hydrodynamic drag forces encourages the solids to drop out of the flow and migrate to the center of the chamber where velocities are the lowest. Stormwater Infrastructure: Storm water infrastructure and structures refers to structural or non-structural measures designed for the benefit of storm water conveyance. Storm water is the rainfall/snowmelt that flows over our yards, streets, parking lots, and buildings and either enters the storm drain system or runs directly into a lake or stream. Owners of storm water infrastructure and structures are typically the property owner. The storm water infrastructure owner may also be the lessee of the property in the case of long-term leases of commercial and industrial zoned properties. The lessee is considered the owner only if the lease specifically states that construction by the lessee must meet applicable local codes and regulations. Catch basins: Catch basin/inlet cleaning and repair has traditionally been performed to respond to localized flooding problems in streets. Catch basins are inlets at the curb with a small trap (usually six inches to one foot deep) below the sewer pipe. These devices help to clean storm water because particles in street runoff settle into the trap before the water enters the storm sewers. Catch basins require regular cleaning of the sediment trap to be. The inlets do not trap sediments and don’t need cleaning unless they are plugged. Cleaning for either catch basins or inlets can be done by hand (e.g., with a clamshell or shovel) or with a vacuum truck. Conveyance Storm Pipes: A good rule of thumb is to conduct inspection of storm drain inlets, ditches, channels, ponds and other treatment facilities at least once a year, prior to the beginning of the rainy season. Complete inspections early enough so that repairs can be made during dry weather. Catch basins should be inspected at least once every six months. Some storm water treatment devices, such as oil/water separators, may require more frequent inspection. For these, check the manufacturer’s specification or other design guidance handbooks. Sewer pipes and culverts should be inspected every three to five years, or in response to a reported problem. Most agencies inspect their sewer pipes six inches or larger with a TV camera, and pipes 36 inches or larger with a walk-through inspection. All other parts of the system are inspected visually. Look for excessive silt build-up, erosion, unusual algal growth, cracked or collapsed pipes, misaligned joints, and other signs of problems such as a sheen on the water surface, discolored water, or an unpleasant odor. Check with product manufacturers or storm water handbooks for advice on what to look for when inspecting more sophisticated treatment devices such as flow splitters and diverters. When a problem is noted, take steps to correct the problem, or route this information immediately to the appropriate individual(s) in your organization who can respond. If needed, develop a good response plan to ensure quick follow-up in the future. Underground Detention: The ChamberMaxx corrugated, open-bottom plastic infiltration chamber system provides storage needed to meet stormwater runoff reduction requirements while maximizing available land space due to being below grade. Integrated end caps eliminate the expense associated with loose end caps that are common on many chamber systems and add to chamber strength. Structurally designed for traffic loading, the chamber system can be under both green space and pavement areas. Inspection recommendations are detailed in the attached Contech ChamberMaxx Inspection and Maintenance Guide. Inlet Filter Insert: A post-construction flow-through water quality device designed to remove sediment, trash & debris, heavy metals bound to particulate matter and oil. The filter works to remove pollutants; such as perlite, granular activated carbon (GAC), leaf compost, zeolite, and various media blends; while simultaneously providing a high level of filtration treatment of stormwater runoff or industrial water discharges. Implementing a consistent maintenance program will result in long term operational and performance efficiency for the Aqua-Guardian™ insert. Inspection recommendations are detailed in the attached Aqua-Swirl Inspection and Maintenance Guide. Inspections Routine inspections are the responsibility of the BMP owner. Maintenance is also the responsibility of the owner. The BMP owner shall be financially responsible for any maintenance or repairs required by the City or its representatives. The approval maintenance plan and inspection forms provided with this manual should be used as guidance for performing maintenance activities. Completed inspection forms must be maintained by the BMP owner and produced upon request by the City. The City must be notified of any changes in BMP ownership, major repairs or BMP failure in writing within 30 days. The letter should be addressed to: Stormwater BMP Modifications Department of Engineering City of Carmel One Civic Square Carmel, IN 46032 The City and/or its representatives have the right to enter the property to inspect BMPs. In the event that the City finds a BMP in need of maintenance or repair, the City will notify the BMP owner of the necessary maintenance or repairs and give the landowner a timeframe for completing the maintenance or repairs. If the maintenance or repairs are not completed within the designated timeframe, the City shall perform the maintenance or repairs and bill the landowner for the actual costs for the work. BMP Inspection Schedule 1. All BMPs will be inspected annually by the owner at a minimum. 2. The Underground Detention System will be inspected by the owner per the Operation, Maintenance, and Management Inspection Checklists. 3. Storm structures will be inspected by the owner quarterly and after every major rainfall event. 4. SQUs will be inspected annually by the owner per provided guidelines and after every major rainfall event. 5. SQUs will be inspected and cleaned immediately if there is a gasoline or oil spill. Inspection & Maintenance Activities Refer to the checklist provided with this manual for operation, maintenance and inspection of BMP and storm water infrastructure. The checklist is for the use of the BMP owner in performing routine inspections. The BMP owner must maintain and update the BMP operations and maintenance plan as conditions change. At a minimum, the operations and maintenance plan must include, but is not limited to: 1. Visual inspect and removal of debris from storm sewers and structures 2. Removal of woody vegetation from swales and other drainageways BMP owners must routinely inspect BMPs to verify that all BMP components are functioning as designed and are not in danger of failing. All BMPs need maintenance to function as water quality and quantity enhancements. Storm sewer should be kept clear of sediments and debris. The natural areas near inlets and outlets associated with the storm sewer system should be repaired when needed to avoid introducing soil and sediment to this system or downstream systems. The BMP owner agrees to the maintenance and inspection programs attached with this manual. Inspections must be documented on the inspection forms included in this Operation and Maintenance Manual. A self-monitoring program by the project site owner is required during construction. A trained individual employed or retained by the project site owner shall prepare and maintain a written evaluation of the project site by the end of the next business day following each measurable rainfall. Inspection during construction should be after a storm event and at a minimum, one (1) time a week. Inspections during the post-construction operation and maintenance period must include routine inspection of all storm water infrastructure to verify that all components are functioning as designed and are not in danger of failing. The stormwater system shall be inspected on an annual basis or upon observed failure. Note that entry into the SQUs should be considered confined space and inspection and maintenance activities should be performed in compliance with OSHA guidelines, see Section 6 of the O&M manual. Note also that all sediments and oil absorbent material shall be disposed of in accordance with all federal requirements and NOT dumped into the storm or sanitary sewer systems. 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: Aqua-Swirl XCelerator XC-3___________________________ Aqua-Swirl Aqua Guardian Inlet Inserts (x3)_______________ Contech ChamberMaxx Detention System_________________ _______________________________ _______________________________ 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 © 2022 Microsoft Corporation © 2022 Maxar ©CNES (2022) Distribution Airbus DS © 2022 TomTom PROJECT LOCATION February 25, 2022FIGURE 1 WEIHE weihe.net Indianapolis, Indiana 46280 10505 N. College Avenue 317 | 846 - 6611E N G I N E E R S W S N ECulver's Carmel, IN PROJECT LOCATION SITE AERIAL February 25, 2022FIGURE 1.1 WEIHE weihe.net Indianapolis, Indiana 46280 10505 N. College Avenue 317 | 846 - 6611E N G I N E E R S W S N ECulver's Carmel, IN PROJECT LOCATION 1-STY BRICK AND FRAME COMMERCIAL BUILDING C C C C C C C C C C C CC 6" STORM -PREFERREDLOCATION4" FOODWASTE4" SANWASTEGAS SERVICECT CABSTORM DROP FROM ROOF -PREFERRED LOCATIONTHIS AREA IS FOR MENU BOARDS AND OCB ONLY.NO UNDERGROUND GREASE TRAPS OR ABOVEGROUND ELECTRICAL TRANSFORMERS; SEE SITEPLAN FROM CFS.VERIFY ALL UNDERGROUND WORK THIS AREA w/SIGN CONTRACTOR.FIRE PROTECTION 2" WATER SERVICEFDC DIRECT CONNECTIONSFOR VENDORSPICKUP WINDOWSTMSTMFFE = 834.00 STM STM ST ST PATIO ST PROPOSED BMP EASEMENT PROPOSED BMPEASEMENTPROPOSED BMPEASEMENTFIGURE 3 PROPOSED DRAINAGE BASIN MAP October 19, 2022 WEIHE weihe.net Indianapolis, Indiana 46280 10505 N. College Avenue 317 | 846 - 6611E N G I N E E R S CULVER'S CARMEL, IN W S N E CAPTURED DETENTION AREA: 1.02 ACRES CN: 92.5 DIRECT DISCHARGE AREA: 0.14 ACRES CN: 82.8 OUTLET CONTROL STRUCTURE UNDERGROUND DETENTION AQUA-SWIRL XCELERATOR XC-3 DIVERSION STRUCTURE STRUCTURE TO BE MOUNTED WITH CATCH BASIN INSERT BMP STRUCTURE TO BE MOUNTED WITH CATCH BASIN INSERT BMP STRUCTURE TO BE MOUNTED WITH CATCH BASIN INSERT BMP OFF-LINE WATER QUALITY & DIVERSION STRUCTURE DETAIL April 28, 2022FIGURE 6 WEIHE weihe.net Indianapolis, Indiana 46280 10505 N. College Avenue 317 | 846 - 6611E N G I N E E R S OUTLET INVERT FROM STR 103 TO STR 102 HAS BEEN RAISED FROM ANALYSIS COMPUTATIONS TO ACT AS A WEIR, ENSURING PRIMARY FLOW IS DIRECTED TO AQUA-SWIRL ~39 L.F 18" RCP ~10 L.F 12" HDPE STR 103 48" DIA MANHOLE DIVERSION STR. TOC = 831.39 INV = 828.52 INV = 827.47 INV = 827.37 INV = 827.27 INV = 827.27 INV = 827.17 INV = 827.57 INV = 827.37 ~10 L.F 12" HDPE ~15 L.F 12" HDPE STR 102 48" DIA MANHOLE TOC = 831.65 AQUA-SWIRL XCELERATOR XC-3 TOC = 831.39 Plan View SCALE 1:40 Elevation View SCALE 1:40 Projected View SCALE 1:70 2733 Kanasita Drive, Suite 111, Chattanooga, TN 37343 Phone (888) 344-9044 Fax (423) 826-2112 www.aquashieldinc.com Structure #: Drawn By: Scale: Date: OFlores 6/26/2019 Rvwed Rvw. Date U.S. Patent No. 6524473 and other Patent Pending Aqua-Swirl XCelerator Aqua-Swirl Stormwater Treatment System Standard Detail As Shown el. Varies Inlet/Outlet Invert el. Varies el. Varies Grade (Rim) el. Varies XC-3 CCW STD XC-3 STD Aqua-Swirl Polymer Coated Steel (PCS) Stormwater Treatment System 12 in [305 mm] Manhole Frame & Cover Detail For Non-Traffic Areas Only NTS 4 in [1219 mm] Min. Gravel Backfill Concrete Wrap Compressible Expansion Joint Material to a minimum 1/2-inch [13 mm] thickness around top of riser to allow transfer of inadvertent loading from manhole cover to concrete slab. Riser Soil Cover Frame 1/2 in [13 mm] 1/2 in [13 mm] 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. Backfill (90% Proctor Density) 8 in [203 mm] 4 1/2 in [114 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. Manhole Frame & Cover Detail For Traffic Loading Areas NTS Cover Frame 48 in [1219 mm] Min. Backfill (90% Proctor Density) 3,000 psi [20 MPa] (min) Concrete #4 [13 mm] Rebar @ 6 in [152 mm] Each Way 30 in [762 mm] Riser 1/2 in [13 mm] 4 1/2 in [114 mm] 14 in [356 mm] 1/2 in [13 mm] Thick Expansion Joint Material If traffic loading (HS-25) 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 1/2-inch [13 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. Please see accompanied Aqua-Swirl specification notes. See Site Plan for actual System orientation. Approximate dry (pick) weight: 1500 lbs [700 kg]. Backfill shall extend at least 18 inches [457 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) Backfill Bedding Undisturbed soil 18 in [457 mm] 6 in [152 mm] 1 1 As an alternative, 42 in [1067 mm] diameter, HS-20/25 rated precast concrete rings may be substituted. 14 in [356 mm] thickness must be maintained. XC-3 inlet/outlet pipe size ranges up to 21 in [533 mm]. XC-3 chamber height may vary up to 80 in [2032 mm], depending on inlet/outlet pipe size. Orientation may vary from a minimum of 90 to a maximum of 180. Clockwise or counterclockwise orientation as needed. 2 3 3 2 54 in [1372 mm] 54 in [1372 mm] P21 in [P533 mm] P21 in [P533 mm] 2 Octagonal Base Plate P42 in [P1070 mm] 47 in [1194 mm] 80 in [2032 mm] Varies Varies 5 [127 mm] MH Frame P30 in [P762 mm] Band Coupler by Manufacturer. (as needed) Riser Manhole Frame and Cover by Manufacturer. (See Details) Rim elevations to match finish grade. Pipe coupling by Contractor. 12 in [305 mm] long Stub-out by Manufacturer. 4 4 Pipe coupling by Contractor. 12 in [305 mm] long Stub-out by Manufacturer. 180P42 in [P1067 mm] Optional inlet orientations available (See note 4) © AquaShieldTM, Inc. 2019. All rights reserved. Version_0419 Aqua-Swirl® XCelerator Stormwater Treatment System Inspection and Maintenance Manual for New Jersey Department of Environmental Protection (NJDEP) AquaShieldTM, Inc. 2733 Kanasita Drive Suite 111 Chattanooga, TN 37343 Toll free (888) 344-9044 Phone: (423) 870-8888 Fax: (423) 826-2112 Email: info@aquashieldinc.com www.aquashieldinc.com © AquaShieldTM, Inc. 2019. All rights reserved. Version_0419 Floatable trash & debris in the Aqua-Swirl® Aqua-Swirl®XCelerator Stormwater Treatment System The Aqua-Swirl®XCelerator Stormwater Treatment System (Aqua-Swirl®XCelerator) is a vortex-type hydrodynamic separator designed and supplied by AquaShieldTM, Inc. (AquaShieldTM). Aqua-Swirl®XCelerator technology removes pollutants including suspended solids, debris, and floatables from stormwater runoff. Both treatment and storage are accomplished in the single swirl chamber without the use of multiple or hidden, blind access chambers. System Operation The treatment operation begins when stormwater enters the Aqua-Swirl®XCelerator through a tangential inlet pipe that produces a circular (or vortex) flow pattern that causes contaminates to settle to the base of the unit. Since stormwater flow is intermittent by nature, the Aqua-Swirl® XCelerator retains water between storm events providing both dynamic and quiescent settling of solids. The dynamic settling occurs during each storm event while the quiescent settling takes place between successive storms. A combination of gravitational and hydrodynamic drag forces encourages the solids to drop out of the flow and migrate to the center of the chamber where velocities are the lowest. © AquaShieldTM, Inc. 2019. All rights reserved. Version_0419 Aqua-Swirl® XCelerator System Maintenance The long term performance of any stormwater treatment structure, including manufactured or land based systems, depends on a consistent maintenance plan. Inspection and maintenance functions are simple and easy for the Aqua-Swirl® XCelerator allowing all inspections to be performed from the surface. It is important that a routine inspection and maintenance program be established for each unit based on: (a) the volume or load of the contaminants of concern, (b) the frequency of releases of contaminants at the facility or location, and (c) the nature of the area being drained. In order to ensure that our systems are being maintained properly, AquaShieldTM offers a maintenance solution to all of our customers. We will arrange to have maintenance performed. Inspection The Aqua-Swirl® XCelerator can be inspected from the surface, eliminating the need to enter the system to determine when cleanout should be performed. In most cases, AquaShieldTM recommends a quarterly inspection during construction and for the first year of operation to develop an appropriate schedule of maintenance. The Aqua-Swirl® XCelerator should be inspected and cleaned at the end of construction regardless of whether it has reached its sediment storage capacity and/or other captured materials. 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 once per year. Maintenance The Aqua-Swirl® XCelerator has been designed to minimize and simplify the inspection and maintenance process. The single chamber system can be inspected and maintained entirely 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 floatable debris can be directly observed and maintained through the manhole access provided directly over the swirl chamber. Inspection Procedure To inspect the Aqua-Swirl® XCelerator, a hook is typically needed to remove the manhole cover. AquaShieldTM provides a customized manhole cover with our distinctive logo to make it easy for maintenance crews to locate the system in the field. We also provide a permanent metal © AquaShieldTM, Inc. 2019. All rights reserved. Version_0419 Sediment inspection using a stadia rod information plate affixed inside the access riser which provides our contact information, the Aqua-Swirl® XCelerator model size, and serial number. The only tools needed to inspect the Aqua-Swirl® XCelerator system are a flashlight and a measuring device such as a stadia rod or pole. Given the easy and direct accessibility provided, floating trash 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. AquaShieldTM recommends that the units be cleaned when sediment depth reaches 6 inches, representing 50% sediment storage capacity. The full sediment storage depth in the Aqua-Swirl® XCelerator is 12 inches. 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. Keep in mind that the finer sediment at the top of the pile may offer less resistance to the measuring device than the larger particles which typically occur deeper within the sediment pile. Aqua-Swirl® XCelerator Cleanout Procedure Cleaning the Aqua-Swirl® XCelerator is simple and quick. Floatable trash debris can be observed and removed directly through the 30-inch service access riser provided. A vacuum truck is typically used to remove the accumulated sediment and debris. An advantage of the Aqua-Swirl® XCelerator design is that the entire sediment storage area can be reached with a vacuum hose from the surface reaching all the sides. Since there are no multiple or limited (blind) access chambers in the Aqua-Swirl® XCelerator there are no restrictions to impede on-site maintenance tasks. © AquaShieldTM, Inc. 2019. All rights reserved. Version_0419 Vacuum (vactor) truck quickly cleans the single open access swirl chamber Disposal of Recovered Materials AquaShieldTM recommends that all maintenance activities be performed in accordance with appropriate health and safety practices for the tasks and equipment being used. AquaShieldTM also recommends that all materials removed from the Aqua-Swirl® XCelerator and any external structures (e.g, bypass features) be handled and disposed in full accordance with any applicable local and state requirements. Aqua-Swirl® XCelerator Inspection and Maintenance Work Sheets on following pages © AquaShieldTM, Inc. 2019. All rights reserved. Version_0419 Aqua-Swirl® XCelerator Inspection and Maintenance Manual Work Sheets SITE and OWNER INFORMATION Site Name: Site Location: Date: Time: Inspector Name: Inspector Company: Phone #: Owner Name: Owner Address: Owner Phone #: Emergency Phone #: INSPECTIONS I. Floatable Trash and Debris 1. Remove manhole lid to expose liquid surface of the Aqua-Swirl® XCelerator. 2. Remove floatable debris with basket or net if any present. II. Sediment Accumulation 1. Lower measuring device (e.g. stadia rod) into swirl chamber through service access provided until top of sediment pile is reached. 2. Record distance to top of sediment pile from top of standing water: inches. 3. Maximum recommended sediment depth prior to cleanout is 12 inches for all models. Consult system shop drawing for treatment chamber depth as measured from the inlet pipe invert to base of the unit. III. Diversion Structures (External Bypass Features) If a diversion (external bypass) configuration is present, it should be inspected as follows: 1. Inspect weir or other bypass feature 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 (concrete or brick) or decaying (steel). 2. Inspect diversion structure and bypass piping for signs of structural damage or blockage from debris or sediment accumulation. 3. When feasible, measure elevations on diversion weir or piping to ensure it is consistent with site plan designs. © AquaShieldTM, Inc. 2019. All rights reserved. Version_0419 4. Inspect downstream (convergence) structure(s) for sign of blockage or structural failure as noted above. CLEANING Schedule cleaning with local vactor company or AquaShieldTM to remove sediment, trash, and other floatable pollutants. The captured material generally does not require special treatment or handling for disposal. Site-specific conditions or the presence of known contaminants may necessitate that appropriate actions be taken to clean and dispose of materials captured and retained by the Aqua-Swirl® XCelerator. All cleaning activities should be performed in accordance with property health and safety procedures. AquaShieldTM always recommends that all materials removed from the Aqua-Swirl® XCelerator during the maintenance process be handled and disposed in accordance with local and state environmental or other regulatory requirements. MAINTENANCE SCHEDULE I. During Construction Inspect the Aqua-Swirl® XCelerator every three (3) months and clean the system as needed. The Aqua-Swirl® XCelerator should be inspected and cleaned at the end of construction regardless of whether it has reached its maintenance trigger. II. First Year Post-Construction Inspect the unit(s) every three (3) months and clean the system as needed. Inspect and clean the system once annually regardless of whether it has reached its sediment or floatable pollutant storage capacity. III. Second and Subsequent Years Post-Construction If the system did not reach full sediment or floatable pollutant capacity in the First Year Post-Construction period, the system can be inspected and cleaned once annually. If the Aqua-Swirl® XCelerator reached full sediment or floatable pollutant capacity in less than 12 months in the First Year Post-Construction period, the system should be inspected once every six (6) months and cleaned as needed. The unit should be cleaned annually regardless of whether it reaches its sediment or floatable pollutant capacity. IV. Bypass Structures Bypass structures should be inspected whenever the Aqua-Swirl® XCelerator is inspected. Maintenance should be performed on bypass structures as needed. © AquaShieldTM, Inc. 2019. All rights reserved. Version_0419 MAINTENANCE COMPANY INFORMATION Company Name: Street Address: City: State/Prov.: Zip/Postal Code: Contact: Title: Office Phone: Cell Phone: ACTIVITY LOG Date of Cleaning: (Next inspection should be 3 months from this data for first year). Time of Cleaning: Start: End: Date of Next Inspection: Floatable debris present: Yes No Notes: STRUCTURAL CONDITIONS and OBSERVATIONS Structural damage: Yes No Where: Structural wear: Yes No Where: Odors present: Yes No Describe: Clogging: Yes No Describe: Other Observations: © AquaShieldTM, Inc. 2019. All rights reserved. Version_0419 NOTES Additional Comments and/or Actions To Be Taken Time Frame ATTACHMENTS x Attach site plan showing Aqua-Swirl® XCelerator location. x Attach detail drawing showing Aqua-Swirl® XCelerator dimensions and model number. x If a diversion configuration is used, attach details showing basic design and elevations (where feasible). © AquaShieldTM, Inc. 2019. All rights reserved. Version_0419 Aqua-Swirl® XCelerator TABULAR MAINTENANCE SCHEDULE Date Construction Started: Date Construction Ended: During Construction Month Activity 1 2 3 4 5 6 7 8 9 10 11 12 Inspect and Clean as needed X X X X Inspect Bypass and maintain as needed X X X X Clean System* X* * The Aqua-Swirl® XCelerator should be cleaned once a year regardless of whether it has reached full pollutant storage capacity. In addition, the system should be cleaned at the end of construction regardless of whether it has reach full pollutant storage capacity. First Year Post-Construction Month Activity 1 2 3 4 5 6 7 8 9 10 11 12 Inspect and Clean as needed X X X X Inspect Bypass and maintain as needed X X X X Clean System* X* * The Aqua-Swirl® XCelerator should be cleaned once a year regardless of whether it has reached full pollutant storage capacity. Second and Subsequent Years Post-Construction Month Activity 1 2 3 4 5 6 7 8 9 10 11 12 Inspect and Clean as needed X* Inspect Bypass, maintain as needed X* Clean System* X* * If the Aqua-Swirl® XCelerator did not reach full sediment or floatable pollutant capacity in the First Year Post- Construction period, the system can be inspected and cleaned once annually. If the Aqua-Swirl® XCelerator reached full sediment or floatable pollutant capacity in less than 12 months in the First Year Post-Construction period, the system should be inspected once every six (6) months or more frequently if past history warrants, and cleaned as needed. The system should be cleaned annually regardless of whether it reaches its full sediment or floatable pollutant capacity. Elevation View SCALE 1:12 Plan View SCALE 1:12 Projected View SCALE 1:40 Mounting Rails SCALE 1:12 QTY - 4 DETAIL A SCALE 1:6 "T" Handle Center Piece Detail SCALE 1:12 A 2733 Kanasita Drive, Suite 111, Chattanooga, TN 37343 Phone (888) 344-9044 Fax (423) 826-2112 www.aquashieldinc.com Structure #: Drawn By: Scale: Date: OFlores 5/5/2020 Rvwed Rvw. Date U.S. Patent Pending Aqua-Guardian Standard Detail As Shown Rev Date Description of RevisionAqua-Guardian Catch Basin Insert GENERAL NOTES: 1. Insert shall be constructed from High-Density Polyethlene (HDPE) PE 3408 ASTM F714 and stainless/powder coated steel. 2. HDPE support flange can be field cut by contractor to fit. 3. Prior to fabrication, purchaser is responsible for indicating all obstructions in catch basin which might inhibit proper installation. 4. Optimum installation requires that the bottom of the insert be above or level with the crown of discharge pipe elevation (1/2 discharge pipe minimum). SIGNED APPROVED DRAWING REQUIRED BEFORE START OF MANUFACTURING DATE:________ ( ) APPROVED _____________________________ ( ) APPROVED AS NOTED ____________________ ( ) REVISE & RESUBMIT _____________________ AG-18 STD AG-18 24" 24" Contractor to Drill 3/8" holes in HDPE Support Flange to match Mounting Rails Stainless Steel Mounting Ralls to be installed by contractor using stainless steel bolts, fender washers/flat bar and lock nuts (provided by manufacturer). Filter Housing Locking Centerpiece Filter Screen Outlet Flow Filtered Standpipe Perforated Base PlateFilter Media Sediment Collection Chamber HDPE Support Flange can be field cut by contractor to fit. Internal High Flow Bypass "T" Handle 21 1/2" 1" HDPE Support Flange (can be field cut by contractor to fit) 24 1/2" 24" 2" 1"14"2" 2"5 3/4"7/8"1" HDPE Suppot Flange Fender Washer or Flat Bar Lock Nut Washer 5/16" BoltMounting Rail P13 1/4" 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. CHECKED: DRAWN:DESIGNED: APPROVED: SHEET NO.: OF DATE:PROJECT No.:SEQ. No.: PROPOSAL CONTECH DRAWING REVISION DESCRIPTIONDATE BY The design and information shown on this drawing is provided as a service to the project owner, engineer and contractor by Contech Engineered Solutions LLC ("Contech"). Neither this drawing, nor any part thereof, may be used, reproduced or modified in any manner without the prior written consent of Contech. Failure to comply is done at the user's own risk and Contech expressly disclaims any liability or responsibility for such use. If discrepancies between the supplied information upon which the drawing is based and actual field conditions are encountered as site work progresses, these discrepancies must be reported to Contech immediately for re-evaluation of the design. Contech accepts no liability for designs based on missing, incomplete or inaccurate information NOT BY CONTECH. www.ContechES.com PATENT PENDING ®CHAMBERMAXX DETENTION SYSTEM CULVER'S CARMEL, IN SITE DESIGNATION: ---- 57" (TYP) PAVEMENT 51.4" (TYP) 5.6" MIN. SPACING (TYP) SUITABILITY OF SUBGRADE TO BE VERIFIED BY ENGINEER OF RECORD 12" . (TYP) SCOUR PROTECTION NETTING (TYP OF ALL INLET PIPES) 4" SCHEDULE 40 PVC RISER WITH RING AND COVER (NOT BY CONTECH) CONCRETE COLLAR (NOT BY CONTECH) 2 1 3 4 18" MIN.9"30.3"6"96" MAX.KEY 1. FLEXIBLE PAVEMENT. 2. GRANULAR ROAD BASE. 3. ANY SUITABLE NATIVE OR GENERAL BACKFILL, SEE ENGINEER PLANS. 4. THE BACKFILL MATERIAL SHALL BE FREE-DRAINING ANGULAR WASHED STONE 3/4" - 2" PARTICLE SIZE. MATERIAL SHALL BE PLACED IN 8"-10" MAXIMUM LIFTS. MATERIAL SHALL BE WORKED INTO THE CHAMBER SPACING BY MEANS OF SHOVEL-SLICING, RODDING, AIR-TAMPER, VIBRATORY ROD, OR OTHER EFFECTIVE METHODS. COMPACTION IS CONSIDERED ADEQUATE WHEN NO FURTHER YIELDING OF THE MATERIAL IS OBSERVED UNDER THE COMPACTOR, OR UNDER FOOT, AND THE PROJECT ENGINEER OR THEIR REPRESENTATIVE IS SATISFIED WITH THE LEVEL OF COMPACTION. INADEQUATE COMPACTION CAN LEAD TO EXCESSIVE DEFLECTIONS WITHIN THE SYSTEM AND SETTLEMENT OF THE SOILS OVER THE SYSTEM. BACKFILL SHALL BE PLACED SUCH THAT THERE IS NO MORE THAN A TWO-LIFT DIFFERENTIAL BETWEEN THE SIDES OF ANY CHAMBER IN THE SYSTEM AT ALL TIMES DURING THE BACKFILL PROCESS. BACKFILL SHALL BE ADVANCED ALONG THE LENGTH OF THE SYSTEM AT THE SAME RATE TO AVOID DIFFERENTIAL LOADING ON ANY PIPES IN THE SYSTEM. EQUIPMENT USED TO PLACE AND COMPACT THE BACKFILL SHALL BE OF A SIZE AND TYPE SO AS NOT TO DISTORT, DAMAGE, OR DISPLACE THE CHAMBERS. ATTENTION MUST BE GIVEN TO PROVIDING ADEQUATE MINIMUM COVER FOR SUCH EQUIPMENT, AND MAINTAIN BALANCED LOADING ON ALL CHAMBERS IN THE SYSTEM, DURING ALL SUCH OPERATIONS. OTHER ALTERNATE BACKFILL MATERIAL MAY BE ALLOWED DEPENDING ON SITE SPECIFIC CONDITIONS. CONTACT YOUR LOCAL CONTECH REPRESENTATIVE FOR DETAILS. CONTECH C-40 OR C-45 NON-WOVEN GEOTEXTILE OPTIONAL NON-WOVEN GEOTEXTILE TO PREVENT SOIL MIGRATION BELOW SYSTEM TOP/ STONE = 3.25 (REF) TOP/ CHAMBER = 2.50 (REF) BOT/ CHAMBER = -0.00 (REF) BOT/ STONE = -0.50 (REF) TYPICAL SECTION DETAIL NOT TO SCALE 85.4" LAY LENGTH (MID) 88.5" LAY LENGTH (END) 96.2" LAY LENGTH (START) TYPICAL ELEVATION VIEW NOT TO SCALE 7037 Ridge Road, Hanover, MD 21076 866-740-3318 410-796-5505 866-376-8511 FAX ITEM NUMBER ITEM DESCRIPTION CES PART NUMBER QTY UNITS 1 CHAMBERMAXX START CHAMBER APCM 003.3051.001 5 EA 2 CHAMBERMAXX MIDDLE CHAMBER APCM 003.3051.002 40 EA 3 CHAMBERMAXX END CHAMBER APCM 003.3051.003 5 EA 4 CONTECH C-40 NON-WOVEN GEOTEXTILE APCM 001.0015.002 595 SF 5 SCOUR PROTECTION NETTING, 7.5 FT WIDE APCM 007.0075.001 1 @ 50.57 QTY @ LF 6 Ø12" HDPE TEE APCM 001.0012.001 9 EA 7 Ø12" 90 DEGREE HDPE ELBOW APCM 001.0012.002 2 EA 8 Ø12" HDPE SPLIT COUPLER PEF12SPCP 10 EA 9 INSTALLATION GUIDE N/A 1 EA HDPE PIPE HDPE SPLIT COUPLER: TO BE SECURED WITH ZIP TIES (PROVIDED) HDPE SPLIT COUPLER DETAIL HDPE PIPE CHECKED: DRAWN:DESIGNED: APPROVED: SHEET NO.: DATE:PROJECT No.: SEQ. No.: PROPOSAL CONTECH DRAWING REVISION DESCRIPTIONDATE BY The design and information shown on this drawing is provided as a service to the project owner, engineer and contractor by Contech Engineered Solutions LLC ("Contech"). Neither this drawing, nor any part thereof, may be used, reproduced or modified in any manner without the prior written consent of Contech. Failure to comply is done at the user's own risk and Contech expressly disclaims any liability or responsibility for such use. If discrepancies between the supplied information upon which the drawing is based and actual field conditions are encountered as site work progresses, these discrepancies must be reported to Contech immediately for re-evaluation of the design. Contech accepts no liability for designs based on missing, incomplete or inaccurate information NOT BY CONTECH. www.ContechES.com PATENT PENDING ®CHAMBERMAXX DETENTION SYSTEM CULVER'S CARMEL, IN SITE DESIGNATION: ---- TYPICAL MANIFOLD DETAILS INSPECTION PORT DETAIL NOT TO SCALE 4"Ø SCHEDULE 40 PVC RISER (NOT BY CONTECH) CAST IRON RING AND COVER. SEE DETAIL (NOT BY CONTECH) STANDARD MANIFOLD COMPONENTS - NOT TO SCALE AVAILABLE DIAMETERS - INCHES TEE 12 15 18 24 ELBOW 12 15 18 24 DIM A 42 42 48 48 GENERAL NOTES: 1. FITTING MATERIAL TO BE MANUFACTURED FROM CORRUGATED HIGH DENSITY POLYETHYLENE, AASHTO M294 PIPE. 2. FITTINGS TO BE FABRICATED IN ACCORDANCE WITH THE REQUIREMENT OF AASHTO M294. 3. FITTINGS DESIGNED TO PROTRUDE 6" INTO THE END OF THE INLET CHAMBERS. 4. MANIFOLD TEE AND ELBOW JOINT TO BE CONNECTED UTILIZING HDPE SPLIT COUPLERS. 7 3/4"Ø 5 1/2"Ø 6 1/4"Ø 3 1/4"3 1/2"RING AND COVER DETAIL NOT TO SCALE PLAN ELEVATION PLAN ELEVATIONDIM APIPE I.D.PIPE I.D.PIPE I.D.PIPE I.D.PIPE I.D.PIPE I.D.DIM ATEE ELBOW PLAN ELEVATION 4'-9"DIM APIPE I.D.PIPE I.D.PIPE I.D.CROSS-OVERDIM APIPE I.D. 2'-5"4'-9" 2'-5"2'-5"2'-5"2'-5"2'-5" HDPE SPLIT COUPLERS COUPLER SIZE PART NUMBER 12"Ø SPLIT COUPLER PEF12SPCP 15"Ø SPLIT COUPLER PEF15SPCP 18"Ø SPLIT COUPLER PEF18SPCP 24"Ø SPLIT COUPLER PEF24SPCP 7037 Ridge Road, Hanover, MD 21076 866-740-3318 410-796-5505 866-376-8511 FAX CHECKED: DRAWN:DESIGNED: APPROVED: SHEET NO.: OF DATE:PROJECT No.: SEQ. No.: PROPOSAL CONTECH DRAWING REVISION DESCRIPTIONDATE BY The design and information shown on this drawing is provided as a service to the project owner, engineer and contractor by Contech Engineered Solutions LLC ("Contech"). Neither this drawing, nor any part thereof, may be used, reproduced or modified in any manner without the prior written consent of Contech. Failure to comply is done at the user's own risk and Contech expressly disclaims any liability or responsibility for such use. If discrepancies between the supplied information upon which the drawing is based and actual field conditions are encountered as site work progresses, these discrepancies must be reported to Contech immediately for re-evaluation of the design. Contech accepts no liability for designs based on missing, incomplete or inaccurate information NOT BY CONTECH. www.ContechES.com PATENT PENDING ®CHAMBERMAXX DETENTION SYSTEM CULVER'S CARMEL, IN SITE DESIGNATION: ---- INSTALLATION NOTES 1. CHAMBERMAXX INSTALLATION GUIDE TO BE REVIEWED BY CONTRACTOR PRIOR TO INSTALLATION. 2. PRIOR TO PLACING BEDDING, THE FOUNDATION MUST BE CONSTRUCTED TO A UNIFORM AND STABLE GRADE. IN THE EVENT THAT UNSUITABLE FOUNDATION MATERIALS ARE ENCOUNTERED DURING EXCAVATION, UNSUITABLE MATERIAL SHALL BE REMOVED AND BROUGHT BACK TO GRADE WITH FILL MATERIAL AS APPROVED BY THE ENGINEER OF RECORD. ONCE THE FOUNDATION PREPARATION IS COMPLETE, THE BEDDING MATERIAL CAN BE PLACED. 3. THE SCOUR PROTECTION NETTING TO EXTEND 1'-0" BEYOND OUTSIDE EDGE OF INLET CHAMBERS. 4. COVER ANY OPEN VOID SPACES GREATER THAN 3/4" ON CHAMBERS WITH A NON-WOVEN GEOTEXTILE TO PREVENT INFILTRATION OF BACKFILL MATERIAL. 5. STONE EMBEDMENT MATERIAL SHALL BE INSTALLED TO 95% STANDARD PROCTOR DENSITY AND PLACED IN 6-INCH TO 8-INCH LIFTS SUCH THAT THERE IS NO MORE THAN A TWO LIFT DIFFERENTIAL BETWEEN ANY OF THE CHAMBERS AT ANY TIME. GRANULAR BACKFILL MATERIAL SHALL BE COMPACTED TO 90% SPD. BACKFILLING SHALL BE ADVANCED ALONG THE LENGTH OF THE CHAMBER ROWS AT THE SAME RATE TO AVOID DIFFERENTIAL LOADING AND DISPLACEMENT OF THE CHAMBERS. THE MINIMUM CHAMBER SPACING MUST BE MAINTAINED. 6. REFER TO CHAMBERMAXX INSTALLATION GUIDE FOR TEMPORARY CONSTRUCTION LOADING GUIDELINES. 7. IT IS ALWAYS THE CONTRACTOR'S RESPONSIBILITY TO FOLLOW OSHA GUIDELINES FOR SAFE PRACTICES. 8. GENERAL INSTALLATION METHODS AND MATERIALS TO BE IN ACCORDANCE WITH ASTM D2321. GENERAL NOTES 1. ALL ELEVATIONS, DIMENSIONS AND LOCATIONS OF RISERS AND INLETS SHALL BE VERIFIED BY THE ENGINEER OF RECORD. 2. PRIOR TO INSTALLATION OF THE CHAMBERMAXX SYSTEM A PRE-CONSTRUCTION MEETING SHALL BE CONDUCTED. THOSE REQUIRED TO ATTEND ARE THE SUPPLIER OF THE SYSTEM, THE GENERAL CONTRACTOR, SUB-CONTRACTORS AND THE ENGINEER. 3. CHAMBERMAXX CHAMBERS ARE MANUFACTURED FROM POLYPROPYLENE PLASTIC. 4. CHAMBERMAXX SYSTEM TO MEET AASHTO HS20/HS25 LIVE LOADING, PER AASHTO LRFD SECTION 12. 5. ACCESS COVERS TO MEET AASHTO HS20/HS25 LIVE LOADING. 6. MINIMUM COVER IS 18-INCHES TO BOTTOM OF FLEXIBLE PAVEMENT OR TO TOP OF RIGID PAVEMENT. FOR COVER HEIGHTS GREATER THAN 96-INCHES CONTACT YOUR LOCAL REPRESENTATIVE. 7. ALL PARTS PROVIDED BY CONTECH UNLESS OTHERWISE NOTED. 8. FOR INFORMATION ON PRE-TREATMENT SYSTEMS, REFERENCE CONTECH PRE-TREATMENT SYSTEM STANDARD DETAILS OR CONTACT YOUR LOCAL REPRESENTATIVE. 9. CHAMBERMAXX BY CONTECH ENGINEERED SOLUTIONS (800) 925-5240 CHAMBERMAXX DESIGN DETAILS FEATURE START CHAMBER MIDDLE CHAMBER END CHAMBER OVERALL CHAMBER HEIGHT - IN 30.3 30.3 30.3 OVERALL CHAMBER WIDTH - IN 51.4 51.4 51.4 ACTUAL LENGTH - IN 98.4 91.0 92.0 INSTALLED LAY LENGTHS - IN 96.2 85.4 88.5 CHAMBER STORAGE VOLUME - CF 50.2 47.2 46.2 CHAMBER STORAGE PER LINEAR FOOT - CF/LF 6.3 6.6 6.3 *MIN. INSTALLED CHAMBER VOLUME - CF 78.1 75.1 74.1 *MIN. INSTALLED CHAMBER VOLUME PER LINEAR FOOT - CF/LF 9.7 10.6 10.0 CHAMBER WEIGHT - LB 83 73 76 *6" OF STONE ABOVE AND BELOW CHAMBER, 5.6" CHAMBER SPACING AND 40% POROSITY 7037 Ridge Road, Hanover, MD 21076 866-740-3318 410-796-5505 866-376-8511 FAX ChamberMaxx® Inspection and Maintenance Guide ENGINEERED SOLUTIONS 2 ChamberMaxx® Safety Before entering into any storm sewer or underground retention/ detention system check to make sure all OSHA and local safety regulations and guidelines are observed during the maintenance process. Hard hats, safety glasses, steel-toed boots and any other appropriate personal protective equipment shall be worn at all times. Inspection Frequency Inspections are recommended at a minimum annually. The ÀUVW\HDURIRSHUDWLRQPD\UHTXLUHPRUHIUHTXHQWLQVSHFWLRQV )UHTXHQF\RILQVSHFWLRQVZLOOYDU\VLJQLÀFDQWO\RQWKHORFDO site conditions. An individual inspection schedule should be established for each site. Inspections Inspection is the key to effective maintenance and is easily performed. Inspections may need to be performed more often in the winter months in climates where sanding operations may lead to rapid sediment accumulations, or in equipment washdown areas. It is very useful to keep a record of each inspection. A sample inspection log is included for your use. The entire treatment train should be inspected and maintained. The treatment train may consist of an upstream sump manhole, manifold system or pre-treatment HDS device. Inspections should start at the upstream device and continue downstream to the GLVFKDUJHRULÀFHLILQFRUSRUDWHGLQWRWKHFKDPEHUV\VWHP Pre-Treatment Device Inspection Inspection and maintenance procedures provided by the manufacturer should be followed for pre-treatment systems such as a CDS®, Vortechs®, VortSentry® or VortSentry® HS. Expected SROOXWDQWVZLOOEHÁRDWDEOHWUDVKVHGLPHQWDQGRLODQGJUHDVH Pre-treatement devices are recommended for all detention/ retention devices regardless of type. Containment Row™ Inspection The optional Containment Row consists of a diversion concrete PDQKROHZLWKDZHLUDQGDGUDLQGRZQRULÀFHDQGDURZRI chambers placed on woven geotextile. The diversion weir directs WKHÀUVWÁXVKÁRZVLQWRWKH&RQWDLQPHQW5RZRIFKDPEHUV7KH majority of sediment will be captured in the Containment Row due to the extended detention time which allows the particles WRVHWWOHRXW+LJKHUÁRZVRYHUWRS E\SDVV WKHZHLULQWRWKH manifold system. 7KH&RQWDLQPHQW5RZZLOOW\SLFDOO\EHORFDWHGLQWKHÀUVWURZ of chambers connected to the diversion manhole. Inspection can be done through accessing the diversion manhole and visually inspecting the Containment Row through the inlet pipe. Inspection ports throughout the system can be used for visual observation and measurement of sediment accumulation using a stadia rod. When the depth of sediment accumulates over 4-inch PP FOHDQRXWLVUHFRPPHQGHG Manifold System Inspection The main manifold pipe can be inspected from the diversion manhole upstream. When a quarter of the pipe volume has been ÀOOHGZLWKVHGLPHQWWKHKHDGHUV\VWHPVKRXOGEHPDLQWDLQHG Visual Inspection Maintenance or further investigation may be required if any of the following conditions exist: • Evidence of an unusual amount of silt and soil build-up on the surface. • Clogged outlet drainpipe. • System does not drain to the elevation of the lowest pipe in dry conditions. • Evidence of potholes or sinkholes Maintenance Underground stormwater retention/detention systems should be inspected at regular intervals and maintained when necessary to ensure optimum performance. The rate at which the system collects pollutants will depend more heavily on site DFWLYLWLHVUDWKHUWKDQWKHVL]HRUFRQÀJXUDWLRQRIWKHV\VWHP,I accumulated silt is interfering with the operation of the detention V\VWHP LH EORFNLQJRXWOHWSLSHVRUGHSRVLWVVLJQLÀFDQWO\UHGXFH WKHVWRUDJHFDSDFLW\RIWKHV\VWHP LWVKRXOGEHUHPRYHG ,WLVHDVLHVWWRPDLQWDLQDV\VWHPZKHQWKHUHLVQRÁRZHQWHULQJ For this reason, cleanout should be scheduled during dry weather. A vacuum truck or other similar devices can be used to remove sediment from the treatment train. Starting upstream, maintain PDQKROHVZLWKVXPSVDQGDQ\SUHWUHDWPHQWGHYLFHV IROORZLQJ PDQXIDFWXUHUUHFRPPHQGHGSURFHGXUHV 2QFHPDLQWHQDQFH is complete, replace all caps, lids and covers. It is important to document maintenance events on the Inspection and Maintenance Log. Header System Maintenance: If maintenance is required, use a high pressure nozzle with rear facing jets to wash the sediments and debris into the diversion manhole. Use the vacuum hose stinger nozzle to remove the washed sediments from the sump of the diversion manhole. It is LPSRUWDQWWRQRWÁXVKVHGLPHQWVLQWRWKHFKDPEHUV\VWHPGXULQJ the maintenance process. 3 Figure 1— Containment Row shown with high pressure cleaning nozzle Containment Row™ Maintenance If maintenance is required, a JetVac truck utilizing a high pressure QR]]OH VOHGJHGUHGJLQJWRRO ZLWKUHDUIDFLQJMHWVZLOOEH required. Insert the nozzle from the diversion manhole into the Containment Row through the inlet pipe. Turn the water feed hose on and feed the supply hose until the nozzle has reached the end of the Containment Row. Withdraw the nozzle slowly. 7KHWRROZLOOEDFNÁXVKWKH&RQWDLQPHQW5RZIRUFLQJGHEULVLQWR the diversion manhole sump. Use the stringer vacuum hose to remove the sediments and debris from the sump of the diversion manhole. Multiple passes may be required to fully cleanout the Containment Row. Vacuum out the diversion manhole and UHPRYHDOOGHEULV6HH)LJXUH Inspection & Maintenance Log Sample Template ChamberMaxx Location: Date Depth of Accumulated Name of Maintenance Performed/Notes Sediment Trash Inspector SUPPORT • 'UDZLQJVDQGVSHFLÀFDWLRQVDUHDYDLODEOHDWZZZ&RQWHFK(6FRP • 6LWHVSHFLÀFVXSSRUWLVDYDLODEOHIURPRXUHQJLQHHUV &RQWHFK(QJLQHHUHG6ROXWLRQV//& &RQWHFK(QJLQHHUHG6ROXWLRQV//&SURYLGHVVLWHVROXWLRQVIRUWKHFLYLOHQJLQHHULQJLQGXVWU\&RQWHFK·VSRUWIROLRLQFOXGHVEULGJHVGUDLQDJH VDQLWDU\VHZHUVWRUPZDWHUPDQDJHPHQWDQGHDUWKVWDELOL]DWLRQSURGXFWV)RULQIRUPDWLRQYLVLWZZZ&RQWHFK(6FRPRUFDOO 127+,1*,17+,6&$7$/2*6+28/'%(&216758('$6$:$55$17<$33/,&$7,21668**(67('+(5(,1$5('(6&5,%('21/<72+(/35($'(560$.(7+(,52:1(9$/8$7,216$1' '(&,6,216$1'$5(1(,7+(5*8$5$17((6125:$55$17,(62)68,7$%,/,7<)25$1<$33/,&$7,21&217(&+0$.(612:$55$17<:+$762(9(5(;35(6625,03/,('5(/$7('727+( $33/,&$7,2160$7(5,$/6&2$7,1*625352'8&76',6&866('+(5(,1$//,03/,(':$55$17,(62)0(5&+$17$%,/,7<$1'$//,03/,(':$55$17,(62)),71(66)25$1<3$57,&8/$5 385326($5(',6&/$,0('%<&217(&+6((&217(&+·6&21',7,2162)6$/( $9$,/$%/($7:::&217(&+(6&20&26 )25025(,1)250$7,21 7KHSURGXFW V GHVFULEHGPD\EHSURWHFWHGE\RQHRUPRUHRIWKHIROORZLQJ86SDWHQWV UHODWHGIRUHLJQSDWHQWVRURWKHUSDWHQWVSHQGLQJ ZZZ&RQWHFK(6FRP ENGINEERED SOLUTIONS ChamberMaxx Maintenance PDF 10/16 Site Name: Owner Name: Owner Address: Owner Phone Number: Emergency Phone Number: Location: Date: Time: Inspector: Change in ownership since last inspection? Maintenance Item Maintenance (1 or 2)* Maintenance is needed: Comments Trash or debris which is located immediately in front of the catch basin opening or is blocking inletting capacity of the basin by more than 10% Trash or debris (in the basin) that exceeds 60 percent 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 six inches clearance from the debris surface to the invert of the lowest pipe. Trash or debris in any inlet or outlet pipe blocking more than 1/3 of its height. Dead animals or vegetation that could generate odors that could cause complaints or dangerous gases (e.g., methane). Sediment Sediment (in the basin) that exceeds 60 percent 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 lowest pipe. Top slab has holes larger than 2 square inches or cracks wider than 1/4 inch (Intent is to make sure no material is running into basin). Frame not sitting flush on top slab, i.e., separation of more than 3/4 inch of the frame from the top slab. Frame not securely attached Maintenance person judges that structure is unsound. Grout fillet has separated or cracked wider than 1/2 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. Settlement/Misalignment If failure of basin has created a safety, function, or design problem. Vegetation growing across and blocking more than 10% of the basin opening. Vegetation growing in inlet/outlet pipe joints that is more than six inches tall and less than six inches apart. Contaminants and Pollution Any evidence of oil, gasoline, contaminants or other pollutants (Coordinate removal/cleanup with local water quality response agency). Inspection and Maintenance Checklist Catch Basins, Manholes, and Inlets Vegetation Fractures or Cracks in Basin Walls/Bottom Structure Damage to Frame and/or Top Slab Trash & Debris Y OR N Cover is missing or only partially in place. Any open catch basin requires maintenance. Mechanism cannot be opened by one maintenance person with proper tools. Bolts into frame have less than 1/2 inch of thread. One maintenance person cannot remove lid after applying normal lifting pressure (Intent is to keep cover from sealing off access to maintenance). Ladder Ladder is unsafe due to missing rungs, not securely attached to basin wall, misalignment, rust, cracks, or sharp edges. Metal Grates Trash and debris that is blocking more than 20% of grate surface inletting capacity. *Maintenance: Enter 1 if maintenance is need and include WO#. Enter 2 if maintenance was performed same day. Catch Basin Cover Site Name: Owner Name: Owner Address: Owner Phone Number: Emergency Phone Number: Location: Date: Time: Inspector: Change in ownership since last inspection? Maintenance Item Maintenance (1 or 2)* Maintenance is needed: Comments Sediment & Debris Accumulated sediment exceeds buildup 1/4" of the pipe diameter up to maximum of 6" Vegetation Vegetation that reduces free movement of water through the pipes Protective coating is damaged; rust is causing more than 50% deterioration to any part of the pipe Any dent that decreases the cross section area of pipe by more than 20% or puncture that impacts performance *Maintenance: Enter 1 if maintenance is need and include WO#. Enter 2 if maintenance was performed same day. Inspection and Maintenance Checklist Y OR N Damaged Pipe Conveyance Stormwater Pipe