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O&M Manual
Stormwater Operation and Maintenance Manual For Independent Senior Insurance – 146th Street Office 3309 E 146th Street Carmel, IN 46033 Prepared For: Independent Senior Insurance PO Box 30095 Indianapolis, IN 46230 Prepared By: American Structurepoint, Inc. 9025 River Road, Suite 200 Indianapolis, Indiana 46240 (317) 547-5580 Submitted/Prepared by: David B. Welch, PE Gehan Mendis, EI Submitted: August 30, 2024 I AFFIRM UNDER PENALTY OF PERJURY THAT I HAVE TAKEN REASONABLE CARE TO REDACT EACH SOCIAL SECURITY NUMBER FROM THIS DOCUMENT UNLESS OTHERWISE REQUIRED BY LAW -David B. Welch TABLE OF CONTENTS OWNER ACKNOWLEDGMENT AGREEMENT (“AGREEMENT”) SECTION I Owner Information SECTION II Site Information SECTION III Storm Structure Maintenance SECTION IV Conveyance Maintenance (Storm Sewer) SECTION V Aqua-Swirl System SECTION VI Underground Detention System SECTION VII Isolator Row SECTION VIII Inspection and Maintenance Schedule SECTION IX Inspection Checklist Forms SECTION X Utility Plan and Details Operation & Maintenance Manual For 146th Street Building Addition 3309 E 146th Street Carmel, IN 46033 BMP OWNER NAME Independent Senior Insurance PO Box 30095 Indianapolis, IN 46230 Representative: Stephanie Flittner Business Phone: 812-213-5774 E-mail: stephanie.flittner@gmail.com GENERAL INFORMATION The purpose of water quality Best Management Practices is to filter the first flush of rainwater before it enters the downstream lakes and streams. Through the use of these Best Management Practices, the sediment and pollutant load in stormwater runoff is reduced, and in many cases the quantity of stormwater water runoff generated is also reduced. The use of Best Management Practices also helps to reduce hydrocarbons, trash and debris from entering waterways. OWNER RESPONSIBILITY The BMP Owner shall be responsible for all maintenance and costs associated with the proposed BMPs. In addition, it is the owner’s responsibility to perform and/or pay for inspections and maintenance as recommended below. RIGHT OF ENTRY The City of Carmel representatives have the right to enter the property to inspect and, if required, maintain the BMPs at any time. ANNUAL INSPECTION REPORTS Annual inspection reports shall be submitted to the City of Carmel for each BMP. 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 of Carmel. 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 Carmel, Indiana (“City”) as 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: ADS Underground Detention, Isolator Row, AquaSwirl XC-3 __________________________ ________________________ Owner Signature Date __________________________ ________________________ Printed Name Company STATE OF ________________ ) ) SS: COUNTY OF ______________ ) 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 _______________________________ Commission Expiration Date _______________________________ _______________________________ Signature Printed Name SECTION I OWNER INFORMATION OWNER INFORMATION: Independent Senior Insurance PO Box 30095 Indianapolis, IN 46230 Representative: Stephanie Flittner Business Phone: 812-213-5774 E-mail: stephanie.flittner@gmail.com OWNER RESPONSIBILITY: The Owner is responsible for all maintenance, including cost, associated with inspecting and maintaining the infrastructure included within this manual. SECTION II SITE INFORMATION The site contains two Best Management Practice (BMP) for the purpose of sediment removal. These BMP’s are an Aqua-Swirl XC-3 and an ADS Strom Tech Isolator Row. The Aqua-Swirl water quality unit is located at the downstream end of the storm sewer system prior to discharging stormwater runoff to the of the ADS StormTech underground detention system which will include an isolator row where influent stormwater will collect and allow particulate settlement prior to the release of stormwater to the discharge orifice. These BMP measures act in sequence as a treatment train, treating stormwater runoff from the developed site. See the attached site exhibits for BMP and storm sewer locations. The City of Carmel will require annual inspection reports of the water quality BMPs. 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 nor received within the month it is due, if there are deficiencies which are nor included in the report, of if any deficiencies included in the report are not addressed in a timely manner, the BMP owner faces enforcement action from the City. SECTION III STORM STRUCTURE MAINTENANCE Storm structures are set at storm sewer pipe connections. Unless you have OSHA approved training and equipment, never enter a manhole. Inspection All inlet castings should be inspected monthly and after each rainfall event. More frequent inspections should be performed in areas where there is higher potential for trash or litter (e.g. retail establishments) and during the fall when leaves are present on the ground. Check the frame and lid for cracks and wear, such as rocking lids or lids moved by traffic. Storm structures and the surrounding areas should be inspected annually for pollutants such as leaks from dumpsters, minor spills, and oil dumping. Take action to have the pollutant source removed. Cleaning Clean structures when there is a blockage of a water flow path or when sediment depth reaches 6”. Cleaning should be performed in a way that ensures removed sediment and water is not discharged back into the storm sewer. Safety Work inside underground structures requires special OSHA-required confined space equipment and procedures. The most practical option may be to contract with a sewer cleaning contractor. Materials Handling Disposal of waste from maintenance of drainage facilities shall be conducted in accordance with federal, state, and local regulations. Removed sediment must be disposed in the garbage as solid waste. Water should be disposed of in a sanitary sewer after oils are removed using oil absorbent materials or other mechanical means. Used oil absorbents should be recycled or disposed according to the manufacturer's instructions. Repairs Repair all security and access features so they are fully functional. This includes locking lids, covers, and ladder rungs. Replace broken parts or lids that rock or are moved by traffic. SECTION IV CONVEYANCE MAINTENANCE (STORM SEWER) Storm sewer pipes convey stormwater. Pipes are built from many materials and are sometimes perforated to allow stormwater to infiltrate into the ground. Storm pipes are cleaned to remove sediment or blockages when problems are identified. Storm pipes must be clear of obstructions and breaks to prevent localized flooding. Inspection Pipes are difficult to inspect requiring special equipment and training. Usually, if a problem occurs the owner needs to call a sewer or plumbing contractor to inspect, repair or clean pipelines. Cleaning Clean pipes when sediment depth is greater than ¼ of pipe diameter, with a maximum sediment depth of 6”. When cleaning a pipe, minimize sediment and debris discharges from pipes to the storm sewer. Install downstream debris traps (where applicable) before cleaning and then remove material. Generally, use mechanical methods to remove root obstructions from inside storm sewer pipes. Do not put root-dissolving chemicals in storm sewer pipes. If there is a problem, remove the vegetation over the line. Safety Work inside underground structures requires special OSHA-required confined space equipment and procedures. The most practical option may be to contract a sewer-cleaning contractor. Materials Handling Sediment and debris from pipes should be disposed in the garbage as solid waste. Pick out any rocks first. Repairs Repair or replace pipes when a dent or break closes more than 20 percent of the pipe diameter. Repair or replace pipes damaged by deterioration. SECTION V AQUA-SWIRL SYSTEM The site contains an Aqua-Swirl XC-3 stormwater quality unit located at the downstream end of the storm sewer system prior to discharging stormwater runoff to the underground detention. Swirl xcelerator’s are designed to remove sediment, debris, and free oil from entering the sewer system. After construction the swirl xcelerator should be inspected every six months and cleaned as needed or once a year regardless of whether it has reached full pollutant storage capacity. Disposal of all sediment, in addition to local requirements, must be in accordance with all federal and state requirements. See the attached O&M Manual for the swirl xcelerator for complete details of inspection and cleaning. Inspection Inspect the unit every six months. The inspection should determine sediment depth, accumulation of trash and litter, and the specific maintenance and repairs needed. Annually check for cracks large enough to let soil enter the vault, broken or defective plates and baffles, and crushed or damaged pipes. Cleaning Remove trash and litter from the vault, inlet and piping when present. Remove sediment when it accumulates to the manufacturer’s maximum recommended depth. Cleaning should be performed in a way that ensures removed sediment and water is not discharged back into the storm sewer. Safety Work inside underground structures requires special OSHA-required confined space equipment and procedures. Materials Handling Disposal of waste from maintenance of drainage facilities shall be conducted in accordance with federal, state, and local regulations. Removed sediment must be disposed in the garbage as solid waste. Water should be disposed of in a sanitary sewer after oils are removed using oil absorbent materials or other mechanical means. Used oil absorbents should be recycled or disposed of according to the manufacturer's instructions. Repairs Repair any cracked or defective plates or baffles. Repair all security and access features so they are fully functional. This includes locking lids, covers, and ladder rungs. Replace broken parts or lids that rock or are moved by traffic. SECTION VI UNDERGROUND DETENTION SYSTEM The site contains an underground detention system under the parking lot of the site. It will be used as a stormwater quality BMP for the area shown on the Utility Plan C400. The system will be comprised of ADS StormTech MC-3500 chambers with caps. Inspection Identify and report pollutant sources to the Owner and the City of Carmel Engineering - Stormwater. Inspect the Stormtech MC-3500 Chambers for oil and other pollutants and remove any pollutants greater in volume than a surface sheen. Structures that contain a sump or elevated bypass manifold are to be inspected to ensure flow is not obstructed from sediment build-up. Cleaning The JetVac process is a sufficient process to clean the underground detention chambers. A fixed floor cleaning nozzle with rear facing nozzle spread of 45 inches or more is preferable. Apply multiple passes of JetVac until backflush water is clean. Vacuum manhole sump as required. Refer to Section X for the manufacturer’s operation and maintenance guide. Material Handling Disposal of waste from maintenance of drainage facilities shall be conducted in accordance with federal, state, and local regulations. SECTION VII ISOLATOR ROW Underground detention along with an Isolator Row are located under the parking lot of the site. The Isolator Row is a combination of the MC-3500 underground chambers wrapped with filter fabric. Refer to the attached Utility Plan C400 for location. Inspection Identify and report pollutant sources to the Owner and the City of Carmel Engineering - Stormwater. Inspect the Isolator Rows for oil and other pollutants and remove any pollutants greater in volume than a surface sheen. Inspection ports are located along the Isolator Rows. Refer to the Utility Exhibit on sheet C400 for locations. Cleaning The JetVac process is a sufficient process to clean the Isolator Row PLUS. A fixed floor cleaning nozzle with rear facing nozzle spread of 45 inches or more is preferable. Apply multiple passes of JetVac until backflush water is clean. Vacuum manhole sump as required. Refer to Section X for the manufacturer’s operation and maintenance guide. Material Handling Disposal of waste from maintenance of drainage facilities shall be conducted in accordance with federal, state, and local regulations. SECTION VIII INSPECTION AND MAINTENANCE SCHEDULE Structure/Unit Inspection Maintenance Storm Structure Maintenance Monthly & after rain events Accumulate 6” of sediment Conveyance Maintenance (Storm Sewer) When problems occur Accumulate 6” of sediment Aqua-Swirl Every 6 months Per manufacturers designated depth Underground Detention System Every 6 months Per manufacturer’s designated depth Isolator Rows Quarterly Accumulate 3” of sediment SECTION IX INSPECTION CHECKLIST FORMS Storm Sewer Structure Operation, Maintenance, and Management Inspection Checklist for BMP Owners Project: _________________________________Owner Change since last inspection? Y N Owner Name, Address, Phone: ___________________________________________________________ Number: _____________________________________________________________________________ Location: _____________________________________________________________________________ Site Status _________________________________ Date: ________________________ Time: ________________________ Inspector: ____________________________________________________________________________ Maintenance Item Satisfactory/ Unsatisfactory Comments Storm Casting and Grate (Inspect monthly and after major storms) 1. Trash/Debris obstructing inflow Affected Structures: 2. Silt/Sediment accumulation Affected Pipes: 3. Other (describe) Structure Sump (Inspect annually and after major storms) 1. Sediment/Debris in sump Affected Structures: 2. Other (describe) Headwall Structures (Inspect annually and after major storms) 1. Vegetation around headwall 2. Erosion around headwall 3. Animal burrows 4. Headwall clear of obstructions 5. Sediment Accumulation Affected Structures: 6. Other (describe) Additional Comments: _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ Actions to be taken: Timeframe: Storm Sewer Pipes Operation, Maintenance, and Management Inspection Checklist for BMP Owners Project: _________________________________Owner Change since last inspection? Y N Owner Name, Address, Phone: ___________________________________________________________ Number: _____________________________________________________________________________ Location: _____________________________________________________________________________ Site Status _________________________________ Date: ________________________ Time: ________________________ Inspector: ____________________________________________________________________________ Maintenance Item Satisfactory/ Unsatisfactory Comments Storm sewer pipes (Inspect annually and after major storms) 1. Trash/Debris obstructing inflow Affected Pipes: 2. Silt/Sediment accumulation Affected Pipes: 3. Other (describe) Additional Comments: _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ Actions to be taken: Timeframe: © 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. 42-48” © 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. Underground Detention Operation, Maintenance, and Management Inspection Checklist for BMP Owners Project: _________________________________Owner Change since last inspection? Y N Owner Name, Address, Phone: ___________________________________________________________ Number: _____________________________________________________________________________ Location: _____________________________________________________________________________ Site Status _________________________________ Date: ________________________ Time: ________________________ Inspector: ____________________________________________________________________________ Maintenance Item Satisfactory/ Unsatisfactory Comments Inflow Points (Inspect every 6 months) 1. Trash/Debris/Sediment obstructing inflow Affected Pipes: 2. Structure Condition 3. Pipe Condition 4. Other (describe) Underground Chambers 1. Debris/Sediment accumulation 2. Access condition 3. Chambers structural condition 4. Weir condition 5. Leaking chambers 6. Oil accumulation 7. Proper drainage 8. Other (describe) Outlet Device 1. Debris/Sediment obstructing outflow 2. Structure condition 3. Pipe Condition 4. Orifice Plate/outlet pipe blockage 5. Other (describe) Additional Comments: _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ Actions to be taken: Timeframe: Isolator® Row O&M Manual 2 Looking down the Isolator Row from the manhole opening, woven geotextile Fabric is shown between the chamber and stone base. StormTech Isolator Row with Overflow Spillway (not to scale) The Isolator® Row Introduction An important component of any Stormwater Pollution Prevention Plan is inspection and maintenance. The StormTech Isolator Row is a technique to inexpensively enhance Total Suspended Solids (TSS) and Total Phosphorus (TP) removal with easy access for inspection and maintenance. The Isolator Row The Isolator Row is a row of StormTech chambers, either SC-160, SC- 310, SC-310-3, SC-740, DC-780, MC-3500 or MC-7200 models, that is surrounded with filter fabric and connected to a closely located manhole for easy access. The fabric-wrapped chambers provide for sediment settling and filtration as stormwater rises in the Isolator Row and passes through the filter fabric. The open bottom chambers and perforated sidewalls (SC-310, SC- 310-3 and SC-740 models) allow stormwater to flow both vertically and horizontally out of the chambers. Sediments are captured in the Isolator Row protecting the adjacent stone and chambers storage areas from sediment accumulation. ADS geotextile fabric is placed between the stone and the Isolator Row chambers. The woven geotextile provides a media for stormwater filtration, a durable surface for maintenance, prevents scour of the underlying stone and remains intact during high pressure jetting. A non-woven fabric is placed over the chambers to provide a filter media for flows passing through the chamber’s sidewall. The non-woven fabric is not required over the SC-160, DC-780, MC-3500 or MC-7200 models as these chambers do not have perforated side walls. The Isolator Row is designed to capture the “first flush” runoff and offers the versatility to be sized on a volume basis or a flow-rate basis. An upstream manhole provides access to the Isolator Row and includes a high/low concept such that stormwater flow rates or volumes that exceed the capacity of the Isolator Row bypass through a manifold to the other chambers. This is achieved with an elevated bypass manifold or a high-flow weir. This creates a differential between the Isolator Row row of chambers and the manifold to the rest of the system, thus allowing for settlement time in the Isolator Row. After Stormwater flows through the Isolator Row and into the rest of the chamber system it is either exfiltrated into the soils below or passed at a controlled rate through an outlet manifold and outlet control structure. The Isolator Row may be part of a treatment train system. The treatment train design and pretreatment device selection by the design engineer is often driven by regulatory requirements. Whether pretreatment is used or not, StormTech recommend using the Isolator Row to minimize maintenance requirements and maintenance costs. Note: See the StormTech Design Manual for detailed information on designing inlets for a StormTech system, including the Isolator Row. ECCENTRIC HEADER MANHOLE WITH OVERFLOW WEIR STORMTECH ISOLATOR ROW OPTIONAL PRE-TREATMENT OPTIONAL ACCESS STORMTECH CHAMBERS 3 Inspection The frequency of inspection and maintenance varies by location. A routine inspection schedule needs to be established for each individual location based upon site specific variables. The type of land use (i.e. industrial, commercial, residential), anticipated pollutant load, percent imperviousness, climate, etc. all play a critical role in determining the actual frequency of inspection and maintenance practices. At a minimum, StormTech recommends annual inspections. Initially, the Isolator Row should be inspected every 6 months for the first year of operation. For subsequent years, the inspection should be adjusted based upon previous observation of sediment deposition. The Isolator Row incorporates a combination of standard manhole(s) and strategically located inspection ports (as needed). The inspection ports allow for easy access to the system from the surface, eliminating the need to perform a confined space entry for inspection purposes. If upon visual inspection it is found that sediment has accumulated, a stadia rod should be inserted to determine the depth of sediment. When the average depth of sediment exceeds 3 inches throughout the length of the Isolator Row, clean-out should be performed. Maintenance The Isolator Row was designed to reduce the cost of periodic maintenance. By “isolating” sediments to just one row, costs are dramatically reduced by eliminating the need to clean out each row of the entire storage bed. If inspection indicates the potential need for maintenance, access is provided via a manhole(s) located on the end(s) of the row for cleanout. If entry into the manhole is required, please follow local and OSHA rules for a confined space entries. Maintenance is accomplished with the JetVac process. The JetVac process utilizes a high pressure water nozzle to propel itself down the Isolator Row while scouring and suspending sediments. As the nozzle is retrieved, the captured pollutants are flushed back into the manhole for vacuuming. Most sewer and pipe maintenance companies have vacuum/JetVac combination vehicles. Selection of an appropriate JetVac nozzle will improve maintenance efficiency. Fixed nozzles designed for culverts or large diameter pipe cleaning are preferable. Rear facing jets with an effective spread of at least 45” are best. JetVac reels can vary in length. For ease of maintenance, ADS recommends Isolator Row lengths up to 200" (61 m). The JetVac process shall only be performed on StormTech Isolator Rows that have AASHTO class 1 woven geotextile (as specified by StormTech) over their angular base stone. Isolator Row Inspection/Maintenance StormTech Isolator Row (not to scale) Note: Non-woven fabric is only required over the inlet pipe connection into the end cap for SC-160LP, DC-780, MC- 3500 and MC-7200 chamber models and is not required over the entire Isolator Row. Isolator Row Step By Step Maintenance Procedures Step 1 Inspect Isolator Row for sediment. A) Inspection ports (if present) i. Remove lid from floor box frame ii. Remove cap from inspection riser iii. Using a flashlight and stadia rod,measure depth of sediment and record results on maintenance log. iv. If sediment is at or above 3 inch depth, proceed to Step 2. If not, proceed to Step 3. B) All Isolator Row i. Remove cover from manhole at upstream end of Isolator Row ii. Using a flashlight, inspect down Isolator Row through outlet pipe 1. Mirrors on poles or cameras may be used to avoid a confined space entry 2. Follow OSHA regulations for confined space entry if entering manhole iii. If sediment is at or above the lower row of sidewall holes (approximately 3 inches), proceed to Step 2. If not, proceed to Step 3. Step 2 Clean out Isolator Row using the JetVac process. A) A fixed floor cleaning nozzle with rear facing nozzle spread of 45 inches or more is preferable B) Apply multiple passes of JetVac until backflush water is clean C) Vacuum manhole sump as required Step 3 Replace all caps, lids and covers, record observations and actions. Step 4 Inspect & clean catch basins and manholes upstream of the StormTech system. ADS “Terms and Conditions of Sale” are available on the ADS website, www.ads-pipe.com The ADS logo and the Green Stripe are registered trademarks of Advanced Drainage Systems, Inc. Stormtech® and the Isolator® Row are registered trademarks of StormTech, Inc. © 2022 Advanced Drainage Systems, Inc. #11011 2/22 CS )( Sample Maintenance Log Date Stadia Rod Readings Sedi- ment Depth (1)–(2) Observations/Actions InspectorFixed point to chamber bottom (1) Fixed point to top of sediment (2) 3/15/11 6.3 ft none New installation. Fixed point is CI frame at grade DJM 9/24/11 6.2 0.1 ft Some grit felt SM 6/20/13 5.8 0.5 ft Mucky feel, debris visible in manhole and in Isolator Row, maintenance due NV 7/7/13 6.3 ft 0 System jetted and vacuumed DJM adspipe.com 800-821-6710 SECTION X UTILITY PLAN AND DETAILS ADLS/DP RESUBMITTAL 9025 River Road, Suite 200 | Indianapolis, Indiana 46240 TEL 317.547.5580 | FAX 317.543.0270 www.structurepoint.com PL O T D A T E : 9/ 1 2 / 2 0 2 4 1 : 4 5 P M PL O T S C A L E : 1: 2 . 5 8 4 9 ED I T D A T E : 9/ 1 2 / 2 0 2 4 ED I T E D B Y : GM E N D I S DR A W I N G F I L E : P: \ 2 0 2 4 \ 0 0 0 2 5 \ D . D r a w i n g s \ C i v i l \ C o n s t r u c t i o n D o c u m e n t s \ 2 0 2 4 . 0 0 0 2 5 . C E . C 4 0 0 . U P . d w g Project Number CERTIFIED BY ISSUANCE INDEX DATE: PROJECT PHASE: 04/17/2024 2024.00025 INDEPENDENT SENIOR INSURANCE - 146TH STREET OFFICE 3309 E 146TH STREET CARMEL, IN 46033 INDEPENDENT SENIOR INSURANCE, INC. REVISION SCHEDULE NO.DESCRIPTION DATE A 2ND SUBMITTAL 06/07/24 B 3RD SUBMITTAL 08/09/24 C 4TH SUBMITTAL 09/12/24D INDIANA CDR 09/11/24 EXISTING LEGEND KEYNOTES C400 UTILITY PLAN UTILITY LEGEND ADLS/DP RESUBMITTAL 9025 River Road, Suite 200 | Indianapolis, Indiana 46240 TEL 317.547.5580 | FAX 317.543.0270 www.structurepoint.com PL O T D A T E : 9/ 1 2 / 2 0 2 4 1 : 4 5 P M PL O T S C A L E : 1: 2 . 5 8 4 9 ED I T D A T E : 9/ 1 2 / 2 0 2 4 ED I T E D B Y : GM E N D I S DR A W I N G F I L E : P: \ 2 0 2 4 \ 0 0 0 2 5 \ D . D r a w i n g s \ C i v i l \ C o n s t r u c t i o n D o c u m e n t s \ 2 0 2 4 . 0 0 0 2 5 . C E . C 4 0 0 . U P . d w g Project Number CERTIFIED BY ISSUANCE INDEX DATE: PROJECT PHASE: 04/17/2024 2024.00025 INDEPENDENT SENIOR INSURANCE - 146TH STREET OFFICE 3309 E 146TH STREET CARMEL, IN 46033 INDEPENDENT SENIOR INSURANCE, INC. REVISION SCHEDULE NO.DESCRIPTION DATE A 2ND SUBMITTAL 06/07/24 B 3RD SUBMITTAL 08/09/24 C 4TH SUBMITTAL 09/12/24D INDIANA CDR 09/11/24 EXISTING LEGEND KEYNOTES C401 UTILITY PLAN UTILITY LEGEND ADLS/DP RESUBMITTAL 9025 River Road, Suite 200 | Indianapolis, Indiana 46240 TEL 317.547.5580 | FAX 317.543.0270 www.structurepoint.com PL O T D A T E : 9/ 1 2 / 2 0 2 4 1 : 4 6 P M PL O T S C A L E : 1: 2 . 5 8 4 9 ED I T D A T E : 9/ 1 2 / 2 0 2 4 ED I T E D B Y : GM E N D I S DR A W I N G F I L E : P: \ 2 0 2 4 \ 0 0 0 2 5 \ D . D r a w i n g s \ C i v i l \ C o n s t r u c t i o n D o c u m e n t s \ 2 0 2 4 . 0 0 0 2 5 . C E . C 4 1 0 . S T M P P . d w g Project Number CERTIFIED BY ISSUANCE INDEX DATE: PROJECT PHASE: 04/17/2024 2024.00025 INDEPENDENT SENIOR INSURANCE - 146TH STREET OFFICE 3309 E 146TH STREET CARMEL, IN 46033 INDEPENDENT SENIOR INSURANCE, INC. REVISION SCHEDULE NO.DESCRIPTION DATE A 2ND SUBMITTAL 06/07/24 B 3RD SUBMITTAL 08/09/24 C 4TH SUBMITTAL 09/12/24D INDIANA CDR 09/11/24 EXISTING LEGEND BENCHMARK DATA PLAN & PROFILE LEGEND C410 STORM PLAN & PROFILE C411 STORM PLAN & PROFILE PLAN & PROFILE LEGEND ADLS/DP RESUBMITTAL 9025 River Road, Suite 200 | Indianapolis, Indiana 46240 TEL 317.547.5580 | FAX 317.543.0270 www.structurepoint.com PL O T D A T E : 9/ 1 2 / 2 0 2 4 1 : 4 6 P M PL O T S C A L E : 1: 2 . 5 8 4 9 ED I T D A T E : 9/ 1 2 / 2 0 2 4 ED I T E D B Y : GM E N D I S DR A W I N G F I L E : P: \ 2 0 2 4 \ 0 0 0 2 5 \ D . D r a w i n g s \ C i v i l \ C o n s t r u c t i o n D o c u m e n t s \ 2 0 2 4 . 0 0 0 2 5 . C E . C 4 1 0 . S T M P P . d w g Project Number CERTIFIED BY ISSUANCE INDEX DATE: PROJECT PHASE: 04/17/2024 2024.00025 INDEPENDENT SENIOR INSURANCE - 146TH STREET OFFICE 3309 E 146TH STREET CARMEL, IN 46033 INDEPENDENT SENIOR INSURANCE, INC. REVISION SCHEDULE NO.DESCRIPTION DATE A 2ND SUBMITTAL 06/07/24 B 3RD SUBMITTAL 08/09/24 C 4TH SUBMITTAL 09/12/24D INDIANA CDR 09/11/24 EXISTING LEGEND BENCHMARK DATA ADLS/DP RESUBMITTAL 9025 River Road, Suite 200 | Indianapolis, Indiana 46240 TEL 317.547.5580 | FAX 317.543.0270 www.structurepoint.com PL O T D A T E : 9/ 1 2 / 2 0 2 4 1 : 5 2 P M PL O T S C A L E : 1: 2 . 5 8 4 9 ED I T D A T E : 9/ 1 2 / 2 0 2 4 ED I T E D B Y : GM E N D I S DR A W I N G F I L E : P: \ 2 0 2 4 \ 0 0 0 2 5 \ D . D r a w i n g s \ C i v i l \ C o n s t r u c t i o n D o c u m e n t s \ 2 0 2 4 . 0 0 0 2 5 . C E . C 6 0 0 . S D . d w g Project Number CERTIFIED BY ISSUANCE INDEX DATE: PROJECT PHASE: 04/17/2024 2024.00025 INDEPENDENT SENIOR INSURANCE - 146TH STREET OFFICE 3309 E 146TH STREET CARMEL, IN 46033 INDEPENDENT SENIOR INSURANCE, INC. REVISION SCHEDULE NO.DESCRIPTION DATE A 2ND SUBMITTAL 06/07/24 B 3RD SUBMITTAL 08/09/24 C 4TH SUBMITTAL 09/12/24D INDIANA CDR 09/11/24 C603 SITE DETAILS ADLS/DP RESUBMITTAL 9025 River Road, Suite 200 | Indianapolis, Indiana 46240 TEL 317.547.5580 | FAX 317.543.0270 www.structurepoint.com PL O T D A T E : 9/ 1 2 / 2 0 2 4 1 : 4 7 P M PL O T S C A L E : 1: 2 . 5 8 4 9 ED I T D A T E : 9/ 1 2 / 2 0 2 4 ED I T E D B Y : GM E N D I S DR A W I N G F I L E : P: \ 2 0 2 4 \ 0 0 0 2 5 \ D . D r a w i n g s \ C i v i l \ C o n s t r u c t i o n D o c u m e n t s \ 2 0 2 4 . 0 0 0 2 5 . C E . C 6 0 0 . S D . d w g Project Number CERTIFIED BY ISSUANCE INDEX DATE: PROJECT PHASE: 04/17/2024 2024.00025 INDEPENDENT SENIOR INSURANCE - 146TH STREET OFFICE 3309 E 146TH STREET CARMEL, IN 46033 INDEPENDENT SENIOR INSURANCE, INC. REVISION SCHEDULE NO.DESCRIPTION DATE A 2ND SUBMITTAL 06/07/24 B 3RD SUBMITTAL 08/09/24 C 4TH SUBMITTAL 09/12/24D INDIANA CDR 09/11/24 C604 ADS DETAILS ADLS/DP RESUBMITTAL 9025 River Road, Suite 200 | Indianapolis, Indiana 46240 TEL 317.547.5580 | FAX 317.543.0270 www.structurepoint.com PL O T D A T E : 9/ 1 2 / 2 0 2 4 1 : 4 7 P M PL O T S C A L E : 1: 2 . 5 8 4 9 ED I T D A T E : 9/ 1 2 / 2 0 2 4 ED I T E D B Y : GM E N D I S DR A W I N G F I L E : P: \ 2 0 2 4 \ 0 0 0 2 5 \ D . D r a w i n g s \ C i v i l \ C o n s t r u c t i o n D o c u m e n t s \ 2 0 2 4 . 0 0 0 2 5 . C E . C 6 0 0 . S D . d w g Project Number CERTIFIED BY ISSUANCE INDEX DATE: PROJECT PHASE: 04/17/2024 2024.00025 INDEPENDENT SENIOR INSURANCE - 146TH STREET OFFICE 3309 E 146TH STREET CARMEL, IN 46033 INDEPENDENT SENIOR INSURANCE, INC. REVISION SCHEDULE NO.DESCRIPTION DATE A 2ND SUBMITTAL 06/07/24 B 3RD SUBMITTAL 08/09/24 C 4TH SUBMITTAL 09/12/24D INDIANA CDR 09/11/24 C604 ADS DETAILS 2733 Kanasita Drive, Suite 111, Chattanooga, TN 37343 Phone (888) 344-9044 Fax (423) 826-2112 www.aquashieldinc.com Structure #: Drawn By: Scale: Date: Rvwed Rvw. Date U.S. Patent No. 6524473 and other Patent Pending Aqua-Swirl® XCelerator As Shown OFlores Standard Detail 2/24/2021 XC-3 CCW 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 48 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) 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 86 in [2184 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 Plan View SCALE 1:40 54 in [1372 mm] 54 in [1372 mm] n21 in [533 mm]2 Octagonal Base Plate Ø42 in [Ø107 mm] Elevation View SCALE 1:40 86 in [2184 mm] Varies Varies 5 MH Frame [127 mm] n30 in [762 mm] Band Coupler by Manufacturer. (as needed) Riser Manhole Frame and Cover by Manufacturer. (See Details) Rim elevations to match finish grade. 53 in [1346 mm] Pipe coupling by Contractor. 12 in [305 mm] long Stub-out by Manufacturer. Pipe coupling by Contractor. 12 in [305 mm] long Stub-out by Manufacturer. 4 4 el. Varies Inlet/Outlet Invert el. Varies el. Varies Grade (Rim) el. Varies n42 in [1067 mm] Projected View SCALE 1:70 Optional inlet orientations available (See note 4) n21 in [533 mm] 180° Lifting LugsLifting Lugs Backfill Bedding Undisturbed soil 18 in [457 mm] 6 in [152 mm] ADLS/DP RESUBMITTAL 9025 River Road, Suite 200 | Indianapolis, Indiana 46240 TEL 317.547.5580 | FAX 317.543.0270 www.structurepoint.com PL O T D A T E : 9/ 1 2 / 2 0 2 4 1 : 4 7 P M PL O T S C A L E : 1: 2 . 5 8 4 9 ED I T D A T E : 9/ 1 2 / 2 0 2 4 ED I T E D B Y : GM E N D I S DR A W I N G F I L E : P: \ 2 0 2 4 \ 0 0 0 2 5 \ D . D r a w i n g s \ C i v i l \ C o n s t r u c t i o n D o c u m e n t s \ 2 0 2 4 . 0 0 0 2 5 . C E . C 6 0 0 . S D . d w g Project Number CERTIFIED BY ISSUANCE INDEX DATE: PROJECT PHASE: 04/17/2024 2024.00025 INDEPENDENT SENIOR INSURANCE - 146TH STREET OFFICE 3309 E 146TH STREET CARMEL, IN 46033 INDEPENDENT SENIOR INSURANCE, INC. REVISION SCHEDULE NO.DESCRIPTION DATE A 2ND SUBMITTAL 06/07/24 B 3RD SUBMITTAL 08/09/24 C 4TH SUBMITTAL 09/12/24D INDIANA CDR 09/11/24 C606 AQUASHIELD DETAILS