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Aqua-Filter Stormwater Filtration SystemInspection and Maintenance ManualAquaShield, Inc.2705 Kanasita Drive, Chattanooga, TN 37343Phone: (423) 870-8888Fax: (423) 826-2112Email: [email protected]

AquaShield , Inc. Table of ContentsIntroduction / Installation / Maintenance Introduction to AquaShield Stormwater Treatment Systems Operation of the Aqua-Filter Stormwater Treatment System Installation of the Aqua-Filter System Inspection & Maintenance of the Aqua-Filter System Appendix2705 Kanasita Drive, Hixson, Tennessee 37343Phone (423) 870-8888 Fax (423) 870-2112www.AquaShieldInc.com

AquaShield , IncStormwater Treatment SolutionsThe highest priority of AquaShieldTM, Inc. (AquaShield ) is to protect waterwaysby providing stormwater treatment solutions to businesses across the world.These solutions have a reliable foundation based on over 20 years of watertreatment experience.Local regulators, engineers, and contractors have praised the AquaShield systems for their simple design and ease of installation. All the systems arefabricated from High-Density Polyethylene (HDPE), and contractors prefer thequick and simple installation of our structures that saves them money.The AquaShield line of patented stormwater treatment products provide forhigh levels of stormwater treatment: The Aqua-Swirl Stormwater Treatment System is a hydrodynamicseparator, which provides a highly effective means for the removal of TSS(fine to coarse sediment), floating debris and free-oil. The Aqua-Filter Stormwater Filtration System is an in-linestormwater filtration system capable of gross contaminant removal, andthe removal of fine sediments, waterborne hydrocarbons, heavy metals(i.e. zinc) and nutrients such as phosphorous and nitrogen.Aqua-Swirl StormwaterTreatment SystemAqua-Filter StormwaterFiltration System

Aqua-Filter Stormwater FiltrationSystemThe Aqua-Filter Stormwater Filtration System is designed for projects thatrequire advanced treatment for stormwater that discharges to sensitive receivingwaters. Each system is custom engineered for site-specific needs.The patented Aqua-Filter filtration system utilizes a unique “treatment-train”approach. The system includes an AquaSwirl designed for gross contaminantremoval, which pre-treats stormwater before entering the filtration chamber. Avariety of natural filter media are used in the filtration chamber to complete thetreatment process by polishing the stormwater, and removing greater than 80%of fine-grained sediments and waterborne pollutants.

Aqua-Filter Stormwater Filtration SystemsThe Aqua-Filter StormwaterFiltration System is designed forsites that require advancedtreatment of runoff stormwaterthat may discharge intosensitive receiving waters.Each Aqua-Filter systemis custom engineered andutilizes a unique approachfor pollutant removal. Thispatented configurationbegins with the removalof gross pollutants by the Aqua-SwirlTMStormwater Treatment System, followed by theremoval of fine sediments and waterborne pollutants by thefiltration chamber.The Aqua-Filter is not only unique because of its modular design, and HDPEconstruction, but also because of the ease of installation. The system can bedesigned for new construction projects or be retrofit for existing storm drainagestructures.The Aqua-Filter system is engineered such that the filtration capacity complieswith established “water quality treatment” requirements. This means that thesystem filters the initial movement of fine sediment pollutants that can beparticularly harmful.Performance testing is a normal part of our quality assurance program. Thirdparty testing has demonstrated Total Suspended Solids (TSS) removals ofgreater than 80% and the effective removal of additional pollutants includinghydrocarbons (i.e. light and heavy oils and grease), phosphorus, and variousheavy metals (i.e. copper, zinc). See the “Performance and Testing” Section fordetails.

System OperationThe Aqua-Filter Stormwater Filtration System operates under gravitational andhydrodynamic forces with no moving parts or valves, which simplifies thetreatment process. The Aqua-Filter system also normally operates in an off-lineconfiguration as recommended by the Center for Watershed Protection and mostmunicipalities; fully treating the more frequent 6-month to 1-year design storms(or roughly 90% - 95% of the annual rainfall on a given site). Larger, moreintermittent storm events (i.e. 10-year or 25-year) are treated in the AquaSwirlTM, and the peak over-flow is permitted to partially bypass the filter mediainternally beneath the filter bed, avoiding the need for external diversionchambers.The unique Aqua-Filter treatment method is illustrated in the drawing shownbelow and described in the following steps.

Step 1: PretreatmentPeripheral pre-treatment of stormwateris not necessary when using the AquaFilter Stormwater Filtration System. Infact, each Aqua-Filter is customengineered to utilize a unique treatmentsequence where both the coarse- andfine- grained pollutants are removed.This sequence begins with the AquaSwirlTM Stormwater Treatment Systemdesigned to target the removal of TSSAqua-SwirlTM to be connected to the Aquaand free-floating oil and debris. TheFilterTM Stormwater Filtration Systemaddition of the Aqua-SwirlTM allowslarger debris to settle before filtration and increases filtration effectiveness.Step 2: FiltrationThe filtration chamber in the Aqua-Filter is designed to refine and enhance thestormwater quality prior to discharge intosensitive receiving waters. The peakfiltration flow rate is based on thecalculated “water quality treatment”requirements desired for the site. TheSizing Chart provided later in this Sectionindicates the peak filtration flow rate forthe specific Aqua-Filter model.Aqua-Filter system lowered into placeAs the pre-treated water enters the filtration chamber, it is evenly distributedacross the filter bed and allowed to permeate through the filter media. The filtermedia are contained in individual sections, which are layered in a pattern toavoid short-circuiting.Aqua-Filter Filter MediaThe natural filter media used for filtration are capable of removing the remainingwaterborne pollutants such as oils, grease, fine silts and clays, nutrients(nitrogen, phosphorus), and heavy metals (copper, lead, zinc). The mostcommonly used media is medium-grained perlite. Other filter media, such aszeolite, granulated activated carbon, leaf compost, and various media blends areavailable.

HDPE AquaShield ProductsInstallationThroughout this section and in ourindividual product specifications,references will be made to specific ASTMstandards for the manufacturing and theinstallation of the AquaShield products.Quality control is a high priority withinAquaShield . That is why all of thepatented products are fabricated,inspected and tested before leavingfor the job site. The AquaShield systems are a modular design andconstructed to facilitate theinstallation process. Becauseeach system is constructed ofHigh-Density Polyethylene(HDPE), even the largest units can be off-loaded and installed without the use ofa crane or other special lifting equipment.Lifting cables are provided on each Aqua-Swirl andAqua-Filter , allowing an excavator or backhoe tomaneuver and position the system. Furthermore, thesystems can be stored on the job site following offloading to accommodate changing schedules.Stub-outs for the inlet and outlet are part of themodular design of the Aqua-Swirl and Aqua-Filter ,which allows the contractor to attach the pipes to theLifting cable for installationinlet and outlet of the Stormwater Treatment Systemwith couplings. Typically, an AquaShield representative is present on-site toassist in the installation process.Both the Aqua-Swirl and the Aqua-Filter come with risers and custommanhole frames and covers. Delivery is typically less than four weeks from finalapproval of shop drawings.

Aqua-Swirl InstallationRoutine installation steps for the Aqua-Swirl units involve preparation andexcavation of the area that is to contain the Aqua-Swirl . This includes grading,leveling, and compacting the base material before lowering the unit into theexcavation and connecting the Aqua-Swirl inlet and outlet stub-outs withappropriate pipe couplings.Prior to shipping, the purchasing contractor provides written confirmation toinstall AquaShield products in accordance with manufacturer's specifications.Step 1 – Excavation and BeddingThe trench and trench bottom shall beconstructed in accordance with ASTM D 2321, 6,Trench Excavation, and Section 7, Installation.The excavation pit is best positioned slightly offsetof the center line of the incoming drain pipetrench because of the tangential inlet pipeconnecting to the Aqua-Swirl .The Aqua-Swirl shall be installed on a stablebase consisting of 12 inches of Class I stonematerials (angular, crushed stone or rock, crushedgravel; large void content, containing little or nofines) as defined by ASTM D 2321, Section 5,Materials; and, compacted to 95% proctordensity. All required safety precautions for AquaSwirl installation are the responsibility of thecontractor.On-site excavationStep 2 – Pipe Connection DevicesCouplings to and from the Aqua-Swirl shall besupplied by the contractor and shall be Fernco ,Mission or equal type flexible boot with stainlesssteel tension bands or equal. Using a metal sheerguard will protect the flexible connector.The coupling between the AquaSwirl and the pipe

Step 3 – Backfill RequirementsBackfill materials shall be Class I or IIstone materials, (well graded gravels,gravelly sands; content, containinglittle or no fines) as defined by ASTMD 2321, Section 5, Materials; and,compacted to 90% proctor density.Class I materials are preferred. Backfilland bedding materials shall be free ofdebris. Backfilling shall conform toASTM F 1759, Section 4.2, “DesignAssumptions”.Backfill shall extend at least 3.5 feetbeyond the edge of the Aqua-Swirl and for the full height to sub-gradeand extend laterally to undisturbedsoils.Class I backfill material around the Aqua-Swirl Sufficient backfill shall be placed over components prior to using heavycompaction or construction equipment to prevent damage. Support shall beprovided for vertical risers as commonly found at service connections, cleanouts,and drop manholes to preclude vertical or lateral movement.Step 4 – Traffic LoadingA reinforced concrete pad shall beplaced over the entire Aqua-Swirl when subject to H-20 (or greater) trafficloading. The pad shall extend no lessthan 12 inches beyond the outsidediameter of the Aqua-Swirl .A professional engineer shall providefinal approval of the design of theconcrete pad and the calculations mustbe included in the submittal. Trafficrated foundry rims and covers shall beinstalled such that no contact is madebetween the HDPE access riser and castiron frame.A reinforced concrete pad for H-20 traffic loadingStep 5 – Non-Traffic LoadingBollards shall be placed around access risers in non-traffic areas to preventinadvertent loading by maintenance vehicles.

Aqua-Filter InstallationNormal installation steps for theAqua-Filter unitsinvolvepreparation and excavation of thearea that is to contain the AquaFilter . This includes grading,leveling and compacting the basematerial before lowering the unitinto the excavation and connectingthe Aqua-Filter inlet and outletstub-outs with appropriate pipecouplings. Prior to shipping, thepurchasing contractor provideswrittenconfirmationto installAquaShield products in accordancewith manufacturer's specifications.An Aqua-Filter system ready to be installedStep 1 – Excavation and BeddingThe trench and trench bottom shall be constructed in accordance with ASTM D2321, Section 6, Trench Excavation, and Section 7, Installation. The HDPEfiltration system shall be installed on a stable base consisting of 12-inches ofClass I stone materials (angular, crushed stone or rock, crushed gravel; largevoid content, containing little or no fines) as defined by ASTM D 2321, Section 5,Materials, and compacted to 95% proctor density. Additional bedding shall betamped around the “under-center” of the filter chamber up to the springline toprovide adequate support. All required safety precautions for the systeminstallation are the responsibility of the contractor.Step 2 – Pipe Connection DevicesCouplings to and from the Aqua-Filter shallbe supplied by the contractor and shall beFernco , Mission or equal type flexible bootwith stainless steel tension bands or equal. Ametal sheer guard should be used whenavailable. The manufacturer shall supply thecoupling to connect the Aqua-Swirl to thefiltration chamber.The coupling between the AquaSwirl and the filtration chamber ofthe Aqua-Filter system

Step 3 – Backfill RequirementsBackfill materials shall be Class I orII stone materials, (well gradedgravels, gravelly sands; containinglittle or no fines) as defined by ASTMD 2321, Section 5, Materials, andcompacted to 90% proctor density.Class I materials are preferred.Backfill and bedding materials shallbe free of debris. Backfilling shallconform to ASTM F 1759, Section4.2, “Design Assumptions”. BackfillClass I backfill surrounding the Aqua-Filter systemshall extend at least 3.5 feet beyondthe edge of the stormwater filtrationsystem and for the full height to sub-grade and extend laterally to undisturbedsoils.Sufficient backfill shall be placed over components prior to using heavycompaction or construction equipment to prevent damage. Support shall beprovided for vertical risers as commonly found at service connections, cleanouts,and drop manholes to preclude vertical or lateral movement.Step 4 – Traffic LoadingA reinforced concrete pad shall beplaced over the entire system whensubject to H-20 (or greater) trafficloading. The pad shall extend no lessthan 12 inches beyond the outsidediameter of the Aqua-Swirl andfiltration chamber on all sides. Aprofessional engineer shall providefinal approval of the design of theconcrete pad and the calculationsmust be included in the submittal.Traffic rated foundry rims and coversshall be installed such that no contactis made with access risers.The installation of a reinforced concrete pad forH20 traffic loadingStep 5 – Non-Traffic LoadingBollards shall be placed around access risers in non-traffic areas to preventinadvertent loading by maintenance vehicles.

AquaShield ProductSystem MaintenanceThe long-term performance of the stormwatertreatment structures (includingmanufactured systems, ponds,swales, etc.), and the effectiveprotection of receiving waters,depends on a consistentmaintenance plan. Inspectionand maintenance functionsare simple and easy for theAquaShield StormwaterTreatment Systems allowingall inspections to beperformed from the surface.An AquaShield fieldrepresentative will be available asneeded to assist local maintenancepersonnel in the field. Please contact us for acopy of a product-specific “Inspection and Maintenance Manual”.It is important that a routine inspection and maintenance program be establishedfor each unit based on (1) the volume or load of the contaminants of concern,(2) the frequency of releases of contaminants at the facility or location, and (3)the nature of the area being drained.In order to ensure that oursystems are being maintainedproperly, AquaShield offersa maintenance solution toall of our customers. Wewillarrangetohavemaintenance performed.

InspectionAll AquaShield products can be inspected from the surface, eliminating theneed to enter the systems to determine when cleanout should be performed.In most cases, AquaShield recommends a quarterly inspection of theStormwater Treatment Systems for the first year of operation to develop anappropriate schedule of maintenance.Based on experience of the system’s first year in operation, we recommend thatthe inspection schedule be revised to reflect the site-specific conditionsencountered. Typically, the inspection schedule for subsequent years is reducedto semi-annual inspection.Aqua-Swirl MaintenanceThe Aqua-Swirl has been designed to minimize and simplify the inspection andmaintenance process. The system can be inspected and maintained completelyfrom the surface, thereby eliminating the need for confined space entry.Furthermore, the entire structure (specifically, the floor) is accessible for visualinspection from the surface. There are no areas of the structure that are blockedfrom visual inspection or periodic cleaning.Inspection of any free-floating oil and floatable debris can be directly observedand maintained through the manhole access provided directly over the swirlchamber.Aqua-Swirl Inspection ProcedureTo inspect the Aqua-Swirl , a hook is needed to removethe manhole cover. AquaShield provides a customizedmanhole cover with our logo to make it easy formaintenance crews to locate the system in the field. Wealso provide a permanent metal information plate attachedinside the access riser, which provides our contactinformation, the Aqua-Swirl model size, and serialnumber.Sediment inspectionusing a stadia rod

The only tools needed to inspect the Aqua-Swirl system are a flashlight and ameasuring device such as a stadia rod or pole. Given the tremendousaccessibility provided, floating oil and debris can be observed directly from thesurface. Sediment depths can easily be determinedby lowering a measuring device to the top of thesediment pile and to the surface of the water.When the sediment pile is within 30 to 36 inches ofthe water surface, the system should bemaintained.It should be noted that in order to avoidunderestimating the volume of sediment in thechamber, the measuring device must be carefullylowered to the top of the sediment pile. The finersediment at the top of the pile, typically offers lessresistance to the measuring device than the largerparticles.Aqua-Swirl Cleanout ProcedureClean out of the Aqua-Swirl is simple. Free-floating oiland floatable debris can be observed and removed directlythrough the 30-inch service access provided.A vacuum truck can be used to remove the accumulatedsediment and debris. It is important to note that the entiresediment storage area can be reached with a vacuum hosefrom the surface (reaching all the sides).Disposal of the material is typically treated in the samefashion as catch basin cleanouts. AquaShield recommends that all materials removed be handled anddisposed of in accordance with local and state requirements.Vacuum truck cleans theAqua-Swirl Inspection Data Sheets are provided in the Appendix of this Manual.

Aqua-Filter MaintenanceProper maintenance of the Aqua-Filter system is needed for the unit to operateefficiently. Typically, inspection of the Aqua-Swirl pretreatment chamber andthe filtration chamber should be performed on a quarterly basis. Informationgathered during the first year of service can be used to create a maintenanceplan appropriate for the site.Aqua-Swirl Pretreatment ChamberTheAqua-Swirl is easilyinspected from the surface.Floating debris and free oil canbe observed along with thecapturedstormwaterbyremoving the manhole cover.Sediment depth is determined bylowering a measuring device(e.g. stadia rod) to the top of thesediment pile.When the sediment pile is within30 to 36 inches from the watersurface, cleaning is required.Typically, a vacuum truck is usedFloatable debris in the Aqua-Swirl to first remove the capturedfloating materials from the water’s surface before lowering the vac-hose into theaccumulated sediment pile for its removal.For more detail regarding the inspection and maintenance of the pretreatmentchamber, please see the previous Section on the Aqua-Swirl Inspection andMaintenance.Aqua-Filter Filtration ChamberThe filter media is also easily observed from the surface. Manhole covers arespaced over the entire filtration bed to provide easy access. AquaShield provides a customized manhole cover with our logo to make it easy formaintenance crews to locate the system in the field.

Initially, the filter media is light tan or white in color. When the media color turnsblack, it has become saturated due to pollutant loading and requiresreplacement. Call toll free (888) 344-9044 to order replacement filters.An entry riser provides direct accessinto the filtration chamber with apermanent ladder welded into thedownstream section of the chamber.This additional access allows for thevacuuming of any standing water andan unobstructed walkway to thedownstream side of the filter bed.A permanent ladder provides access to filter chamberReplacement of the filtration mediatypically requires entry into thefiltration chamber by one of a twomember maintenance crew. Confinedspace entry precautions should betaken by the maintenance crew whenremoving and replacing the filters.The spent filter containers are normally retrieved from the filter chamber by asecond crewmember at the surface through the multiple 30-inch risers spacedacross the top of the filter bed. In addition, the filter containers can be accesseddirectly from within the filtration chamber via a vertical removable panel at therear of the filter bed.The center row of the filtration bed has beenfitted with one inch thick removable fiberglassgrate panels. This allows for a six-foot tallwalkway down the center of the chamber,providing easy access to the full length of thefiltration chamber.Rows of removable side grates are positionedon both sides of the center row. After thecenter grate panel has been removed, thefilter media can be lifted from these side gratepanels.After the removable sides have been loadedGrate panels (shown) or cargo nettingwith replacement filter containers, thecover the filter mediaremovable center grates are repositioned andlocked in place. New filters are installed in acriss-cross manner to prevent short-circuiting (see Appendix).

Filter Media DisposalThe filter media does not allow captured contaminants to be released onceabsorbed into the material. This is a unique quality of the Aqua-Filter , allowingsuperior performance under extreme conditions.The spent filters andsediment generally do notrequireanyspecialtreatment or handling fordisposal.Thefiltrationmedia can be recycled asfuel material, or sent to asubtitleDlandfill.AquaShield recommendsthat all materials removedduring the maintenanceprocess be handled anddisposed of in accordancewithlocalandstaterequirements.Spent filter media can be recycled or sent to a landfillInspection Data Sheets are provided in the Appendix of this Manual.

APPENDIX

CARGO NETTING INSTALLATIONCargo netting is used to secure filter containers in place after containers areinstalled in the appropriate orientation within the filtration chamber (see filtercontainer installation instructions).Cargo netting is placed on top of the top course of filter containers and stretchedinto place using heavy duty cable ties (provided). The netting is cable tied toHDPE anchor blocks and attached to the side walls of the filtration chamber (seedrawing).It is important to install the netting in such a way as to both cover the entiresurface area of the containers while stretching netting snuggly to minimize thecontainers movement under high flow conditions.Netting installation is complete when all surface area of filter containers arecovered with netting and netting is secured with cable ties to anchor blocks.For any questions related to installing filter containers or netting, please callAquaShield, Inc. (888) 344-9044.

INSTALLATION INSTRUCTIONS FOR AQUASHIELD FILTER CONTAINERS(1) Bottom Grates found in chamber(2) First row first course(3) Second row(4) Second course started(5) Second course completeRepeat process for each additional row and course.Cargo netting shall be stretched over top course of filter containers and secured in place withheavy duty cable ties rated at 350 lbs minimum.

Aqua-Filter Inspection and Maintenance Manual for BMP Owners(Note: Attach certifications for local regulatory authority including any applicable fees.)Site and Owner InformationSite Name:Change in ownership since last inspection?YOwner Name:Owner Address:Owner Phone Number:Emergency Phone Number:Location:Date:Time:Inspector Name:Maintenance ItemsInspection - Aqua-Swirl (pretreatment)Floatable Debris and Oil1. Remove manhole lid to expose liquid surface of Aqua-Swirl .2. Remove floatable debris with basket or net if any present.3. If oil is present, measure its depth. Clean liquids from system if 1/2" or more oil is present (see "Cleaning" Figure 5).Note: Water in an Aqua-Swirl can appear black like oil due to the dark body of the surrounding structure. Oil appearsdarker than water in the system and is usually accompanied by debris (e.g. Styrofoam, etc.) with obvious signs of oil stains.The depth of oil can be measured with an oil/water interface probe, a stadia rod with water phylic paste,a coliwasa, or by simply collecting a representative sample with a jar attached to a rod.Sediment AccumulationMake measurements as follows (see Figures 1 and 2):1. Lower measuring device (i.e. stadia rod) into Aqua-Swirl throught service access provided. (See Figure 2)2. Record distance to top fo sediment pile (in):3. Record distance to top of water (in):4. Calculate distance to sediment minus distance to water (in):5. Schedule cleaning if value in step 4 is 30" or less. (See Figure 5).30"Figure 1Figure 2Aqua-FilterTM I and M ManualPage 1N

Inspection - Aqua-Filter (continued)1.2.3.4.5.6.7.8.Remove manhole lids to expose filter bed of media and access ladder.Enter filtration chamber through access riser. (note: water will be present at very minimal depths prior to cleanout during the inspection)Remove bulkhead door as shown in Figure 3.Remove filter grate covers/cargo nets and filters through manway risers along the chamber.Visually inspect the filter medial noting the color and saturation of contaminents (TSS, oils, grease, etc.)If media is dark brown to black, the media is fully spent and should be replaced. (See Figure 4).Contact AquaShield Maintenance Department for replacement bags at 888-344-9044.Schedule cleaning (See "Cleaning" Figure 5).Figure 3Figure 4Inspection (continued)Diversion StructuresIf a diversion structure is present on the site, this should be inspected for the following items.1. Inspect weir or other structure for structural decay or damage. Weirs are more susceptible to damage than off-set piping and shouldbe checked to confirm that they are not crumbling, in the case of concrete or brick weirs, or decaying if a steel weir was used.2. Inspect diversion structure and by-pass piping for signs of structural damage or blockage from debris or sediment accumulation.3. Measure elevations on diversion weir or piping to ensure it is consistent with site plan design.4. Inspect downstream structure in diversion system for signs of blockage or structural failure.CleaningSchedule cleaning with local vactor company or AquaShield 's Maintenance Department toremove sediments, oils, and other floatable pollutants with a vactor trailer. The spent filters andsediment generally do not require any special treatment or handling for disposal. The filtermedia can be recycled as fuel material, sent to a subtitle D landfill. AquaShield recommendsthat all materials removed during the maintenance process be handled and disposed of inaccordance with local and state requirements.Figure 5Aqua-FilterTM I and M ManualPage 2

Maintenance ScheduleDuring ConstructionInspect the Aqua-Filter every three months and clean the system as needed. The Aqua-Filter should be inspected and cleaned at theend of construction regardless of whether it has reached its sediment or oil storage capacity.First Year Post-ConstructionInspect the Aqua-Filter every three 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.Second and Subsequent Years Post-ConstructionIf the Aqua-Filter did not reach full sediment or floatable pollutant capacity in the First Year Post-Construction, the system can beinspected and cleaned once annually.If the Aqua-Filter reached full sediment or floatable pollutant capacity in less than 12 months in the First Year Post-Construction, thesystem should be inspected once every six months and cleaned as needed. The Aqua-Filter should be cleaned annually regardless ofwhether it reaches its sediment or floatable pollutant capacity.Bypass StructuresBypass structures should be inspected whenever the Aqua-Filter is inspected and maintained as needed.Maintenance Company InformationCompany Name:Street Address:City, State, Zip:Contact:Office Phone:Mobile Phone:Pager:Activity LogDate of cleaning:(Next inspection should be 3 months from this date for the first year).Time of cleaning:Date of next inspection:Floatable debris present (Y/N)?Oil present (Y/N)?Oil depth (inches):Aqua-FilterTM I and M ManualPage 3

Structural Conditions and CommentsAny structural damage?YNWhere?Any evidence of structural wear?YNWhere?Odors present?YNDescribe:Any plugging?YNDescribe:NOTESAdditional Comments and/or Actions to Be TakenTime FrameNOTES:1. Attach site plan showing Aqua-Filter location.2. Attach detail drawing showing Aqua-Filter dimensions and model number.3. If a diversion structure is used, attach details showing basic design and elevations.Aqua-FilterTM I and M ManualPage 4

Aqua-Filter TABULAR MAINTENANCE SCHEDULEDate Construction Started:Date Construction Ended:During ConstructionActivity12345Month6789101112Inspect and Clean asNeededXXXXInspect Bypass Structures(if applicable) and MaintainAs NeededXXXXClean System*X** The Aqua-Filter should be cleaned once a year regardless of whether it has reached full pollutantstorage capacity. In addition, the system should be cleaned at the end of construction re

AquaShield , Inc. Table of Contents Introduction / Installation / Maintenance Introduction to AquaShield Stormwater Treatment Systems Operation of the Aqua-Filter Stormwater Treatment System Installation of the Aqua-Filter System Inspection & Maintenance of the Aqua-Filter System Appendix 2705 Kanasita Drive, Hixson, Tennessee 37343