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HomeMy WebLinkAboutO&M Manual Project: HIGHER GROUND EDUCATION - CARMEL 10216 N. Michigan Road Carmel, Indiana 46032 Prepared For: Global Power and Construction 7S 882 Camp Dean Road Big Rock, IL 60511 Prepared By: CIVIL & ENVIRONMENTAL CONSULTANTS, INC. Indianapolis, Indiana Civil Engineer: Nick Justice, PE CEC Project 313-863 MAY 2022 Operation & Maintenance Manual -i- Higher Ground Education - Carmel May 2022 TABLE OF CONTENTS 1.0 OWNER CONTACT INFORMATION ..........................................................................1 2.0 INTRODUCTION..............................................................................................................1 3.0 STORM SEWER MAINTENANCE ................................................................................1 4.0 WATER QUALITY SYSTEM MAINTENANCE ..........................................................1 4.1 Water Quality Devices Inspections ......................................................................... 2 5.0 SUMMARY ........................................................................................................................3 APPENDICES Appendix A – Sample Inspection Logs Appendix B – BMP Map & Details Appendix C – Aqua Swirl Manufacturers Recommendations 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 -1- Higher Ground Education - Carmel May 2022 1.0 OWNER CONTACT INFORMATION Owner’s Name: Higher Ground Education C/O: Scott Heguy Owner’s Address: 10 Orchard Rd., Suite 200 Lake Forest, CA 92630 Business E-mail: sheguy@tohigherground.com Business Phone: 312-880-8189 Storm sewer improvements will be maintained and operated by Higher Ground Education. 2.0 INTRODUCTION The City of Carmel Stormwater Technical Manual (CSTM) provides a variety of options for improving water quality using Best Management Practices (BMP). In order to maintain water quality within the BMP, light maintenance activities will be needed to manipulate hydrology. This document defines responsibilities for operating, inspecting and maintaining the stormwater system at the Altum’s Redevelopment. 3.0 STORM SEWER MAINTENANCE Storm sewer pipes should be regularly maintained and cleaned of debris. All piping should be inspected monthly and after each rainfall event, especially during the autumn season. Inspections should occur more regularly when falling leaves are present. Refer to Appendix B for Maintenance Map and Details. Disposal of all sediment must be in accordance with all federal, state and local requirements. Additionally, Higher Ground Education will perform annual compliance inspections of all permanent BMPs. 4.0 WATER QUALITY SYSTEM MAINTENANCE The City of Carmel reserves the right to enter the property at any time to inspect the operation of any Best Management Practices (BMP) onsite. The following is a list and description of the BMP at the Higher Ground Education center: · Aqua-Swirl XC-4 – Mechanical Water Quality Unit. -2- Higher Ground Education - Carmel May 2022 · Native Vegetated Swales: Vegetated swales are shallow vegetated channels to convey stormwater where pollutants are removed by filtration through grass and infiltration through soil. They look similar to, but are wider than a ditch that is sized only to transport flow. These are located west of the proposed parking garage and drains to the detention pond. See Appendix B for the location and details of all infrastructure and water quality BMPs. 4.1 WATER QUALITY DEVICES INSPECTIONS The BMPs require certain items to be inspected on a monthly or annual basis during the existence of the BMPs. This inspection is the responsibility of Higher Ground Education. More frequent inspections may need to take place during periods of heavy rainfall. For each drainage system listed below, the following details shall be inspected monthly and after major rainfall events (>1 inch in 24 hours). Also refer to sample inspection logs in Appendix A. · Underdrains– Remove all debris to ensure openings are clear and operating properly. Cleanouts (C.O.) at the end of underdrain pipes should be utilized for debris removal. Water and sediment from cleaning procedures should NOT be dumped into a sanitary sewer. · BMP inlets and outlets (piping) – Remove all debris to ensure openings are clear and operating properly. The maximum sediment depth should be no more than ¼ of the pipe diameter and up to a maximum depth of 6”. Check for rip rap stone displacement and erosion of the apron surrounding pipe end section. Repair immediate failure. Water and sediment from cleaning procedures should NOT be dumped into a sanitary sewer. BMP native vegetation – This area includes all turf vegetation within the boundary of the BMPs. Some species of plants are considered invasive and should be eradicated. Species such as reed canary grass (Phalaris arundinacea), purple loosestrife (Lythrum salicaria), common reed (Phragmites australis), and cattails (Typha spp.) would be considered fast colonizing and invasive species. Remove as necessary. See desired planting list & schedule in Appendix C. A protective cover of vegetation shall be established on all exposed surfaces of the pond embankment, spillway, borrow and spoil areas and to a minimum of 50 feet on all sides of pond and 100 feet upstream of the pool area. Open areas to be vegetated will be limed, fertilized, seeded and mulched according to the construction specification. No woody vegetation shall be planted on or within 25 feet of the pond embankment or spillway. See Appendix B for the location and details of all infrastructure and water quality BMPs. If these maintenance guidelines are not followed, the BMP’s may fail to attain water quality objectives set forth in the regulations. The BMP shall be owned by the developer/property owner; any and all -3- Higher Ground Education - Carmel May 2022 maintenance and repair activities shall be paid for by the owner. Documentation of all repairs should be kept on file by the owner for review by City of Carmel inspectors. Sample inspection logs are included in Appendix A. Right of Entry - The City of Carmel may inspect the premises at any time necessary to determine the functionality of any BMPs onsite. City of Carmel Note- The BMPs shall be owned by the developer/property owner; any and all maintenance and repair activities shall be paid for by Higher Ground Education. The requirements of the O&M Manual shall remain in effect regardless of change in ownership of the development. Furthermore, it shall be the responsibility of the BMP owner to provide the O&M Manual to future parties who will assume responsibility for the operation and maintenance of the post-construction storm water quality measures. Higher Ground Education will perform annual compliance inspections of all onsite BMPs and provide the reports to City of Carmel 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. Refer to Agreement in the Manual. 5.0 SUMMARY The objective of the operation and maintenance manual is to allow the owner of the storm management system to manage the system to the City of Carmel specifications. The City requires minimal information for their records: 1. Maintenance agreement. The agreement requires the owner to comply with the maintenance set forth in the manual. 2. Monthly and annual data sheets and repair documentation must be kept on site for the City Inspectors to review during their annual inspection of the site. APPENDIX A SAMPLE INSPECTION LOGS Post-Construction BMP Inspection Checklist Vegetated Swale Stormwater Ordinance Technical Standards Veg. Swale O&M 2 of 2 July 2004 Vegetated Swale Operation, Maintenance, and Management Inspection Checklist Project: ___________________________________________________________________________________ Location: ___________________________________________________________________________________ Date: _________________________________________ Time: ____________________________ Inspector: _________________________________________ Title: ____________________________ Signature: ____________________________________________________ Maintenance Item Satisfactory/ Unsatisfactory Comments 1. Debris Cleanout Contributing drainage areas free from debris 2. Vegetation Mowing performed when needed No evidence of erosion 3. Check Dams or Energy Dissipaters No evidence of flow going around structure No evidence of erosion at the downstream toe Soil permeability 4. Sediment Forebay Sediment cleanout not needed (clean out when 50% full) Actions to be Taken:_____________________________________________________________________________ Indiana Montessori Academy 2925 W. 146th Street Carmel, IN Stormwater Operation, Maintenance, and Management Inspection Checklist for Owners Note: Minimum inspection frequency shall be every 6 months. Project: Location: Site Status: _______________________________________ Date: _______________________________________ Time: _______________________________________ Inspector: _______________________________________ Maintenance Item Satisfactory/ Comments Unsatisfactory (Circle) Storm Sewer System 1. Encroachment into pond or easement S or U ________________________________ 2. Complaints from residents S or U ________________________________ 3. Public hazards (describe) S or U ________________________________ 4. Storm Sewer Inlets (Debris) S or U ________________________________ 5. Storm Sewer Nyloplast Inlets (Debris) S or U ________________________________ 6. Storm Sewer Castings(Debris) S or U ________________________________ 7. Storm Sewer Pipes S or U ________________________________ 8. Storm Sewer Yard Drain HDPE S or U ________________________________ 9. Storm Sewer DIP Beneath Building S or U ________________________________ 10. Drains clear and functioning S or U ________________________________ Additional Comments: Actions To Be Taken: APPENDIX B BMP MAP & DETAILS REFERENCE530 E. Ohio Street, Suite G - Indianapolis, IN 46204317-655-7777 · 877-746-0749 www.cecinc.comNORTHDATE:DWG SCALE:DRAWN BY:CHECKED BY:APPROVED BY:PROJECT NO:FIGURE NO.:BMP LOCATION MAP313-8631"=50'MAY 2022AMLNPJNPJB-1GLOBAL POWER AND CONSTRUCTIONHIGHER GROUND EDUCATION10220 N. MICHIGAN RD. 8AB3456712CDEFGH83456712ABCDEFGHDESCRIPTIONDATENO REVISION RECORD DATE: DWG SCALE: DRAWN BY: CHECKED BY: APPROVED BY: PROJECT NO:SHEETOFDRAWING NO.:313-863 FEBRUARY 1, 2022 DRAFT DRAFT GLOBAL POWER AND CONSTRUCTION, INC. HIGHER GROUND EDUCATION CARMEL 10216 N. MICHIGAN ROAD CARMEL, INDIANA 46032 530 E. Ohio Street · Suite G - Indianapolis, IN 46204 317-655-7777 · 877-746-0749 www.cecinc.com SITE DETAILS JCB AS NOTED46C803 8AB3456712CDEFGH83456712ABCDEFGHDESCRIPTIONDATENO REVISION RECORD DATE: DWG SCALE: DRAWN BY: CHECKED BY: APPROVED BY: PROJECT NO:SHEETOFDRAWING NO.:313-863 FEBRUARY 1, 2022 DRAFT DRAFT GLOBAL POWER AND CONSTRUCTION, INC. HIGHER GROUND EDUCATION CARMEL 10216 N. MICHIGAN ROAD CARMEL, INDIANA 46032 530 E. Ohio Street · Suite G - Indianapolis, IN 46204 317-655-7777 · 877-746-0749 www.cecinc.com SANITARY DETAILS JCB AS NOTED47C804 2733 Kanasita Drive, Suite 111, Chattanooga, TN 37343Phone (888) 344-9044 Fax (423) 826-2112www.aquashieldinc.comStructure #:Drawn By:Scale:Date:6/26/2019RvwedRvw. DateU.S. Patent No. 6524473 and other Patent PendingAqua-Swirl XCeleratorAs ShownOFloresAqua-Swirl Stormwater Treatment SystemStandard DetailXC-4 CCW STDXC-4 STDAqua-Swirl Polymer Coated Steel (PCS)Stormwater Treatment System12 in[305 mm]Manhole Frame & Cover DetailFor Non-Traffic Areas OnlyNTS4 in[1219 mm] Min.Gravel BackfillConcreteWrap Compressible ExpansionJoint Material to a minimum1/2-inch [13 mm] thickness aroundtop of riser to allow transfer ofinadvertent loading frommanhole cover to concrete slab.RiserSoilCoverFrame1/2 in[13 mm]1/2 in[13 mm]Place small amount ofconcrete [3,000 psi [20MPa] (min)] to supportand level manhole frame.DO NOT allow manholeframe 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 inadvertentloading by maintenance vehicles.Manhole Frame & Cover DetailFor Traffic Loading AreasNTSCoverFrame48 in[1219 mm] Min.Backfill (90%Proctor Density)3,000 psi [20 MPa](min) Concrete#4 [13 mm] Rebar@ 6 in [152 mm]Each Way30 in [762 mm]Riser1/2 in[13 mm]4 1/2 in[114 mm]14 in[356 mm]1/2 in [13 mm] ThickExpansion JointMaterialIf traffic loading (HS-25) is required or anticipated, a 4-foot [1.22 m]diameter, 14-inch [356 mm] thick reinforced concrete pad must beplaced over the Stormwater Treatment System Riser to support andlevel the manhole frame, as shown. The top of riser pipe must bewrapped with compressible expansion joint material to a minimum1/2-inch [13 mm] thickness to allow transfer of wheel loads frommanhole cover to concrete slab. Manhole cover shall bear on concreteslab and not on riser pipe. The concrete slab shall have a minimumstrength of 3,000 psi [20 MPa] and be reinforced with #4 [13 mm]reinforcing steel as shown. Minimum cover over reinforcing steel shallbe 1-inch [25 mm]. Top of manhole cover and concrete slab shall belevel with finish grade.Please see accompanied Aqua-Swirl specification notes. See SitePlan for actual System orientation. Approximate dry (pick) weight:2000 lbs [900 kg].Backfill shall extend at least 18inches [457 mm] outward fromSwirl Concentrator and for thefull height of the SwirlConcentrator (including riser)extending laterally toundisturbed soils. (See MHDetail Below)BackfillBeddingUndisturbed soil18 in[457 mm]6 in[152 mm]11As an alternative, 42 in [1067 mm] diameter, HS-20/25rated precast concrete rings may be substituted. 14 in[356 mm] thickness must be maintained.XC-4 inlet/outlet pipe size ranges up to 27 in [686 mm].XC-4 chamber height may vary up to 99 in [2515 mm],depending on inlet/outlet pipe size.Orientation may vary from a minimum of 90° to amaximum of 180°. Clockwise or counterclockwiseorientation as needed.2332Plan ViewSCALE 1:40 66 in[1676 mm] 66 in[1676 mm] n27 in[686 mm] n27 in[686 mm]2Octagonal Base Plate Ø54 in[Ø1375 mm]Elevation ViewSCALE 1:40 57 in[1448 mm] 99 in[2515 mm][1067 mm][940 mm] 5 MH Frame[127 mm] n30 in[762 mm]Band Couplerby Manufacturer.(as needed)RiserManhole Frame andCover by Manufacturer.(See Details)Rim elevations tomatch finish grade.Pipe couplingby Contractor.12 in [305 mm]long Stub-outby Manufacturer.44el. VariesInlet/Outlet Invertel. Variesel. VariesGrade (Rim) el. VariesPipe couplingby Contractor.12 in [305 mm]long Stub-outby Manufacturer.180° n54 in[1372 mm]Projected ViewSCALE 1:70Optional inletorientations available(See note 4)STORMWATER TREATMENT SOLUTIONSPhone (888) 344-9044 www.aquashieldinc.com™This is a sample detail, please contact AquaShield, Inc. for more information.1. Where high groundwater elevations are present oranticipated, Contractor shall supply 3 inches of fiberreinforced concrete inside the swirl chamber to preventbase plate deflection and buoyancy. In addition,Contractor shall supply concrete anti-floatation pad pouredover the octagonal base plate of the swirl to preventbuoyancy.AGENERAL NOTES:VentPlan ViewOctagonal Base PlateArched BaffleArchedBaffleASwirl Inlet Manhole Frame andCover by Manufacturer.(See Details)Grade (Rim) Rim elevations to match finishedgrade. HDPE risers can be fieldcut by Contractor.Swirl OutletVentRiserInlet OutletPipe couplingby Contractor.12" [305 mm]long Stub-outby Manufacturer.Pipe couplingby Contractor.12" [305 mm]long Stub-outby Manufacturer.Section A-AOctagonalBase PlateFiber ReinforcedConcrete3" [76 mm]ConcreteAnti-Floatation PadWcVariesHcVaries12"[305 mm]Bedding42"[1067 mm]UndisturbedSoilUndisturbedSoilDescription of RevisionTreatment SystemAqua-Swirl StormwaterAnti-Floatation Ring Detail www.aquashieldinc.com Phone (888) 344-9044 Fax (423) 826-21122705 Kanasita Drive, Chattanooga, TN 37343STORMWATER TREATMENT SOLUTIONSU.S. Patent No. 6524473Scale:Date:Drawn By:Document:Rev. DateConcrete Ring DetailBLR08/22/081:20ASTM D 2321 Class II CrushedStone Backfill with 90%Proctor DensityASTM D 2321 Class I CrushedStone Backfill with 95%Proctor DensityWcVariesConcreteAnti-Floatation PadGravelBackfillGravelBackfill8AB3456712CDEFGH83456712ABCDEFGHDESCRIPTIONDATENO REVISION RECORD DATE: DWG SCALE: DRAWN BY: CHECKED BY: APPROVED BY: PROJECT NO:SHEETOFDRAWING NO.:313-863 FEBRUARY 1, 2022 DRAFT DRAFT GLOBAL POWER AND CONSTRUCTION, INC. HIGHER GROUND EDUCATION CARMEL 10216 N. MICHIGAN ROAD CARMEL, INDIANA 46032 530 E. Ohio Street · Suite G - Indianapolis, IN 46204 317-655-7777 · 877-746-0749 www.cecinc.com STORMWATER DETAILS JCB AS NOTED48AQUA SWIRL XC-4 INLINE UNIT DETAILC805AQUA SWIRL ANTI-FLOATATION DETAIL NATIVE LANDSCAPE MAINTENANCE SCHEDULE January/ February · Check that gardening tools and equipment are in good repair · Prepare mowers, string trimmers, etc. for use. Clean air filters, new fuel, oil & filter change, perhaps tune-up, etc. · Check on supplies of materials such as fertilizer, herbicide, garden equipment, etc. March/April/May · Cut down and remove dead leaves, stems and seed heads from perennials and grasses. · Mulch where needed to reduce weeding and maintain moisture. · Plant trees, shrubs, vines, perennials and grasses through May. Recycle all plastic pots. · Prune winter-damaged branches on shrubs or trees that have not begun to grow by late April/early May. · In late April and early May cut back tall grasses by 50% to promote fuller and more compact growth. · Water new transplants and newly planted shrubs and trees unless rainfall is abundant. June/July/August · Vigorous, unwanted limbs should be removed or shortened on new trees. · Cultivate and mulch. Mulching will reduce about 70% of the summer yard maintenance. · Remove diseased plant material by digging entire plant and disposing in trash. Composting will spread the virus. · Water all key planting areas thoroughly unless rainfall has been adequate. · Trim back any groundcover overhanging curbs or sidewalks. September/October · Check plants for signs of water stress, nutrient deficiency or disease. Fertilize only when necessary. · Mulch where needed to reduce weeding and maintain moisture and protect from winter freezing and drought. · September and October are best months to kill invasive species. Cut and spray stumps with 10% glyphosate. Properly dispose of cuttings if they contain berries to prevent spreading the seeds and reinfesting the newly cleared area. · Trim back any groundcover overhanging curbs or sidewalks. November/December · Continue to seek out and remove invasive species. · Clean tree leaves and debris out gutters after tree leaves have fallen. · Winterize hoses and outside water sources. Clean out rain barrels. Add fuel stabilizer to engines before winter storage. Drain and store water hoses. Clean up all tools. · Review the year’s schedule and make plans for next year’s improvements. APPENDIX C AQUA SWIRL MANUFACTURERS RECOMMENDATIONS © 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 a nd 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  Attach site plan showing Aqua-Swirl® XCelerator location.  Attach detail drawing showing Aqua-Swirl® XCelerator dimensions and model number.  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.