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HomeMy WebLinkAbout19011L-0-Report-O&M-fullOPERATIONS & MAINTENANCE NEW CARMEL ELEMENTARY SCHOOLS 2025 CLAY CENTER ROAD, CARMEL, INDIANA 46032 Certified by: Karen K. Collins, PE Indiana registration No. 10404538 _____________________________________________ PREPARED FOR CSO Architects 8831 KEYSTONE CROSSING INDIANAPOLIS, */ 6240 _________________________________________________ AUGUST12 2019 8365 Keystone Crossing, Suite 201 Indianapolis, IN 46240 Phone: (317) 202-0864 Fax: (317) 202-0908 MANUAL FOR POST-CONSTRUCTION MEASURES Revised SEPTEMBER 12, 2019 Revised JANUARY 08, 2020 Z:\2019\19011L - CSO, Clay Center Road Elementary\Engineering\Drainage\Reports\O&M Manual Clay Center Road Elementary OPERATIONS & MAINTENANCE MANUAL Table of Contents 1. BMP Owner 2. Definition of Best Management Practice (BMP) 3. Description of BMPs a. Aqua-Swirl AS-10 4. Inspection and Maintenance a. Aqua-Swirl AS-10 5. Description of BMPs a. Wet Pond with Native Banks 6. Inspection and Maintenance a. Wet Pond with Native Banks b. Native Plantings 7. Owner Acknowledgement Agreement 8. Operation, Maintenance and Management Inspection Checklists 9. BMP Location Maps 10. BMP Details a. Aqua-Swirl AS-10 b. Wet Pond with Native Banks Outlet Structure Z:\2019\19011L - CSO, Clay Center Road Elementary\Engineering\Drainage\Reports\O&M Manual 1. BMP OWNER Name: Carmel Clay School District Attn. Mr. Ron Farrand Jr., RA Address: 5201 East 131st Street Carmel, IN 46033 Phone: 317-815-3962 2. DEFINITION OF A BEST MANAGEMENT PRACTICE (BMP) A Best Management Practice (BMP) is defined as a structural measure (wetland, pond, vegetated swale, sand filter, etc.) designed to benefit water quality and quantity. Storm water can easily become polluted by grease, oil, sediment, chemicals, and other contaminants as it travels to an inlet or receiving water. The purpose of a BMP is to improve storm water quality primarily through the removal of Total Suspended Solids (TSS). The City of Carmel has Right-of-Entry to the development to inspect and maintain the BMP as necessary. Easement(s) have been provided around the BMPs for this development, with implied access as needed. 3. DESCRIPTION OF BMPs: Aqua-Swirl: BMP #1, the Aqua-Swirl AS-10 hydrodynamic swirl filter, is used to treat storm water on this site. The Aqua-Swirl filter provides treatment for the most contaminated first flush, while the cleaner peak storm runoff is diverted through the main conveyance pipe. The operation begins when storm water enters the Aqua-Swirl through a tangential inlet pipe which produces a circular (or vortex) flow pattern that causes contaminates to settle. Because storm water flow is intermittent by nature, the Aqua-Swirl Concentrator retains water between storm events providing both dynamic and quiescent settling of inorganic 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. 4. INSPECTION AND MAINTENANCE Aqua-Swirl: Z:\2019\19011L - CSO, Clay Center Road Elementary\Engineering\Drainage\Reports\O&M Manual • BMP Owner must routinely inspect BMPs to verify that all BMP components are functioning as designed and are not in danger of failing. All BMPs need maintenance to function as water quality and quantity enhancements. Maintenance can range from dredging/pumping sediment out of the treatment structures to repairing any damage that has affected the structure’s integrity and function. • BMP Owner is responsible for the maintenance of the BMP and any costs associated with maintaining the BMP. BMP Owner is required to perform any maintenance tasks outlined in this text. • BMP Owner shall keep the BMP free from litter, floating pollutants, and sediment accumulated above levels outlined in this text. • Representatives from the City of Carmel have the right to enter this property to inspect the BMPs. The BMP Owner shall be financially responsible for any maintenance, repairs, or recommendations for modification as required by the City of Carmel or its representatives during inspections. • Refer to the checklists with this Manual for guidance on BMP inspections. • Inspections must be documented on the inspection forms included in this manual. 5. DESCRIPTION OF BMPs: Wet Pond with Native Banks: BMP #2, the wet pond with native banks, is used to treat storm water on this site. The retention basin provides treatment by intercepting debris as well as sediment and silt, and superior storm peak attenuation / mitigation through additional volume available to be used above the normal peak elevation. 6. INSPECTION AND MAINTENANCE Wet Pond with Native Banks: • The checklist is for the use of the BMP owner in performing routine inspections. The City of Carmel may perform inspections of the BMP using a similar checklist. The BMP owner is responsible for the cost of maintenance and annual inspections. The BMP owner must maintain and update the BMP operations and maintenance plan. At a minimum the operations and maintenance plan must include, but is not limited to: • -Restore and stabilize any erosion. • -Restorative maintenance involving removal of any litter, pollutants, excessive accumulated debris or sediment. This may include skimming, dredging or vacuum removal. Z:\2019\19011L - CSO, Clay Center Road Elementary\Engineering\Drainage\Reports\O&M Manual • -Restorative maintenance involving planting media and/or much replacement as required to keep plants healthy. • -Preventative maintenance on any kind of aeration system to identify and prevent potential leaks, breaks, or spray head failures. • BMP Owner must routinely inspect BMP to verify that all BMP components are functioning as designed and are not in danger of failing. All BMPs need maintenance to function as water quality and peak attenuation / mitigation enhancements. • Inspections must be documented on the inspection form included in this manual. Maintenance of all storm water pollution prevention measures will be the responsibility of the project owner, utilizing procedures outlined in this manual for post construction water quality measures. • The maintenance guidelines consist mostly of good housekeeping measures. Any vegetated areas that experience damage from rainfall events should be repaired and re-vegetated as soon as possible. Maintenance responsibilities shall remain in effect for the life of the BMP from the date the construction is completed. Inspections must be documented on the inspection form included in this manual. • Inspect outlet structure and remove any litter, debris or clogging as needed to restore function. • Do not place any fill in the retention basin. • Deep-rooted plants and trees are not allowed in the retention basin. • Weeds may be pulled and very limited spot use of herbicides and / or insecticides may be used. However if allowed to run into the water, these materials are considered poisonous to aquatic animal life as well as destructive to oxygen content in the water. • During the first year, monthly to semi-monthly (6 to 12 times in the year) inspections shall be performed. • After the first year, quarterly (four times a year) inspections should be performed. • Mow in March and remove excess clippings to be disposed of properly. For additional detail, see following section: Native Plantings. Z:\2019\19011L - CSO, Clay Center Road Elementary\Engineering\Drainage\Reports\O&M Manual Native Plantings: MAINTENANCE OF BIORETENTION PLUGS During construction 1. Install goose protection fence around planting area if plugs will be installed near any open water, refer to detail on page L410. 2. Use TRIPLE shredded mulch to keep weeds to a minimum and minimize washout of mulch and soil during heavy rain. DO NOT FERTILIZE First Growing Season Maintenance 1. Weed plugged area three times, typically in May, July and September. 2. Hire a landscape contractor that has experience with native species and is able to identify invasive species that are to be removed. 3. Remove goose fence once plugs are well established. 4. Mow the plugs in March following the first full growing season. Remove clippings after mowing to avoid excess shade and thatch. 5. Remove any woody species that become established. First Growing Season Troubleshooting 1. If survival rate is less than 70 percent, evaluate site conditions for causes of poor growth a. poor soil conditions - too sandy or too much clay b. runoff c. siltation d. pollution e. hydrology 2. If survival rate is greater than 70 percent but less than 95 percent (or the specified acceptable rate), the contractor shall supplement planted area with additional plugs. Evaluate which plant material is thriving and utilize these species when adding additional plugs. Use a minimum of five different species of sedges or forbs to ensure biodiversity is maintained. Second Growing Season 1. Weed plugged areas two (2) times, typically in May and September. 2. Remove any woody species from the planted area 3. Mow in March and remove clippings Annual Maintenance 1. Mow in March and remove excess clippings 2. Remove any woody species and weeds. 3. Evaluate health of plants and watch for disease or stress 4. Analyze surrounding site for new potential hazards to bioretention system. Z:\2019\19011L - CSO, Clay Center Road Elementary\Engineering\Drainage\Reports\O&M Manual MAINTENANCE OF BIORETENTION SEED During Construction 1. Install a cover crop of an approved annual species if seeding does not take place between April 20 and July 20. This will keep weeds down and stabilize the soil. 2. Ensure a quality kill of existing vegetation is completed prior to seeding of the bioretention area to minimize weeds. First Growing Season Maintenance 1. Mow at a height of 4 to 6 inches when the oats set seed heads. Mow at a height of 4 to 6 inches once a month or whenever weed growth reaches 10 inches and for the remainder of the first season. 2. If cool season weed growth is heavy in the spring of the second season, mow once in late May or prior to thistle setting flowers, whichever occurs first. Second Growing Season Maintenance 1. Overseed with same seed mix, excluding the temporary cover crop species if the following criteria are not met by the beginning of the second growing season. a. 90 percent coverage b. 60 percent of the species planted are alive and present c. 40 percent of the vegetation that is present consists of native species of the permanent matrix. 2. Mow if weed growth reaches 10 inches. Annual Maintenance starting the third growing season. 1. Mow in March and remove excess clippings 2. Remove any woody species and weeds. 3. Evaluate health of plants and watch for disease or stress 4. Analyze surrounding site for new potential hazards to bioretention system. 5. If excess weed growth is still present, mow a second time at the end of May. Z:\2019\19011L - CSO, Clay Center Road Elementary\Engineering\Drainage\Reports\O&M Manual Requirements regarding the submittal of annual inspection reports to the 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, or on a schedule set by the City of Carmel. 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. Send to: City of Carmel Engineering Department Storm Water O & M Program Manager 1 Civic Square Carmel, IN 46032 This Operation and Maintenance Manual is submitted to the City of Carmel, IN with the intent of insuring the longevity and adequate functioning of all BMPs. The BMP Owner noted is responsible for any additional maintenance and/or repair activities noted in this text as required by the City of Carmel, and any activities required to maintain the function and longevity of the BMP, including, if necessary, measures and / or practices that are above and beyond what is herein described. Z:\2019\19011L - CSO, Clay Center Road Elementary\Engineering\Drainage\Reports\O&M Manual 7. OWNER ACKNOWLEDGMENT AGREEMENT Z:\2019\19011L - CSO, Clay Center Road Elementary\Engineering\Drainage\Reports\O&M Manual 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 BMP 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. The City of Carmel is Granted Authority to access the BMPs. BMPs:_Aqua-Swirl AS-10, Wet Pond with Native Banks______________ _______________________________ ___________________________ 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 Z:\2019\19011L - CSO, Clay Center Road Elementary\Engineering\Drainage\Reports\O&M Manual Aqua-Swirl Inspection Check List Page 1 of 15 Aqua-Swirl® Stormwater Treatment System Inspection and Maintenance Manual AquaShieldTM, Inc. 2705 Kanasita Drive Chattanooga, TN 37343 Toll free (888) 344-9044 Phone: (423) 870-8888 Fax: (423) 826-2112 Email: info@aquashieldinc.com www.aquashieldinc.com March 2013 © AquaShieldTM, Inc. 2013 Page 2 of 15 Table of Contents Page(s) AquaShieldTM Stormwater Treatment Systems 3 Aqua-Swirl® Stormwater Treatment System 4 – 9 Inspection and Maintenance Worksheets 10 – 14 Aqua-Swirl® Tabular Maintenance Schedule 15 AquaShieldTM, Inc. 2705 Kanasita Drive Chattanooga, Tennessee 37343 Toll free (888) 344-9044 Fax (423) 870-2112 www.aquashieldinc.com Page 3 of 15 AquaShield™, Inc Stormwater Treatment Solutions The highest priority of AquaShieldTM, Inc. (AquaShield™) is to protect waterways by providing stormwater treatment solutions to businesses across the world. These solutions have a reliable foundation based on over 20 years of water treatment experience. Local regulators, engineers, and contractors have praised the AquaShield™ systems for their simple design and ease of installation. All the systems are fabricated from high performance, durable and lightweight materials. Contractors prefer the quick and simple installation of our structures that saves them money. The patented line of AquaShield™ stormwater treatment products that provide high levels of stormwater treatment include the following: Aqua-Swirl® Stormwater Treatment System: hydrodynamic separator, which provides a highly effective means for the removal of sediment, floating debris and free- oil. Aqua-FilterTM Stormwater Filtration System: treatment train stormwater filtration system capable of removing gross contaminants, fine sediments, waterborne hydrocarbons, heavy metals and total phosphorous. Aqua-Swirl® Stormwater Treatment System Aqua-Filter™ Stormwater Filtration System Page 4 of 15 Aqua-Swirl® Stormwater Treatment System The patented Aqua-Swirl® Stormwater Treatment System is a single chamber hydrodynamic separator which provides a highly effective means for the removal of sediment, free oil, and floating debris. Both treatment and storage are accomplished in the swirl chamber without the use of multiple or “blind” chambers. Independent laboratory and field performance verifications have shown that the Aqua-Swirl® achieves over 80% suspended solids removal efficiency on a net annual basis. The Aqua-Swirl® is most commonly installed in an “off-line” configuration. Or, depending on local regulations, an “in-line” (on-line) conveyance flow diversion (CFD) system can be used. The CFD model allows simple installation by connecting directly to the existing storm conveyance pipe thereby providing full treatment of the “first flush,” while the peak design storm is diverted and channeled through the main conveyance pipe. The patented Aqua-Swirl® Stormwater Treatment System provides a highly effective means for the removal of sediment, floating debris, and free oil. Swirl technology, or vortex separation, is a proven form of treatment utilized in the stormwater industry to accelerate gravitational separation. Page 5 of 15 Floatable debris in the Aqua-Swirl® Each Aqua-Swirl® is constructed of high performance, lightweight and durable materials including polymer coated steel (PCS), high density polyethylene (HDPE), or fiberglass reinforced polymer (FRP). These materials eliminate the need for heavy lifting equipment during installation. System Operation The treatment operation begins when stormwater enters the Aqua-Swirl® 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® 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. The treated flow then exits the Aqua-Swirl® behind the arched outer baffle. The top of the baffle is sealed across the treatment channel, thereby eliminating floatable pollutants from escaping the system. A vent pipe is extended up the riser to expose the backside of the baffle to atmospheric conditions, preventing a siphon from forming at the bottom of the baffle. Custom Applications The Aqua-Swirl® system can be modified to fit a variety of purposes in the field, and the angles for inlet and outlet lines can be modified to fit most applications. The photo below demonstrates the flexibility of Aqua-Swirl® installations using a “twin” configuration in order to double the Page 6 of 15 Custom designed AS-9 Twin Aqua-Swirl® water quality treatment capacity. Two Aqua-Swirl® units were placed side by side in order to treat a high volume of water while occupying a small amount of space. Retrofit Applications The Aqua-Swirl® system is designed so that it can easily be used for retrofit applications. With the invert of the inlet and outlet pipe at the same elevation, the Aqua-Swirl® can easily be connected directly to the existing storm conveyance drainage system. Furthermore, because of the lightweight nature and small footprint of the Aqua-Swirl®, existing infrastructure utilities (i.e., wires, poles, trees) would be unaffected by installation. AquaShield™ Product 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 AquaShieldTM Stormwater Treatment Systems 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. Page 7 of 15 Inspection All AquaShieldTM products can be inspected from the surface, eliminating the need to enter the systems to determine when cleanout should be performed. In most cases, AquaShieldTM recommends a quarterly inspection for the first year of operation to develop an appropriate schedule of maintenance. 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 reduced to semi-annual inspection. Aqua-Swirl® Maintenance The Aqua-Swirl® 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 free- floating oil and floatable debris can be directly observed and maintained through the manhole access provided directly over the swirl chamber. Aqua-Swirl® Inspection Procedure To inspect the Aqua-Swirl®, a hook is 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 information plate affixed inside the access riser which provides our contact information, the Aqua-Swirl® model size, and serial number. Page 8 of 15 Sediment inspection using a stadia rod in a single chamber Maintain system when sediment is 42-48 inches below water surface. Maximum sediment storage capacity reached when sediment is 30 inches below water surface. The only tools needed to inspect the Aqua-Swirl® system are a flashlight and a measuring device such as a stadia rod or pole. Given the easy and direct accessibility provided, floating oil and debris can be observed directly from the surface. Sediment depths can easily be determined by lowering a measuring device to the top of the sediment pile and to the surface of the water. When the sediment pile is within 42 to 48 inches of the water surface (or sediment pile thickness is 18 to 24 inches as measured from the base), the system should be maintained. The maximum sediment storage capacity of the Aqua-Swirl® is reached when the sediment pile is within 30 inches of the water surface (or sediment accumulation is 36 inches thick as measured from the base). 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. The Aqua-Swirl® design allows for the sediment to accumulate in a semi-conical fashion as illustrated above. That is, the depth to sediment as measured below the water surface may be less in the center of the swirl chamber; and likewise, may be greater at the edges of the swirl chamber. Aqua-Swirl® Cleanout Procedure Cleaning the Aqua-Swirl® is simple and quick. Free-floating oil and floatable 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 42-48” Page 9 of 15 Vacuum truck quickly cleans the Aqua-Swirl® from a single chamber Aqua-Swirl® 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 (hidden or “blind”) chambers in the Aqua-Swirl®, there are no restrictions to impede on-site maintenance tasks. Disposal of Recovered Materials Disposal of recovered material is typically handled in the same fashion as catch basin cleanouts. 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® and any external structures (e.g, bypass features) be handled and disposed in full accordance with any applicable local and state requirements. Aqua-Swirl® Inspection and Maintenance Work Sheets on following pages Page 10 of 15 Aqua-Swirl® 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 Debris and Oil 1. Remove manhole lid to expose liquid surface of the 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 one half (½) inch or more oil is present. Note: Water in Aqua-Swirl® can appear black and similar to oil due to the dark body of the surrounding structure. Oil may appear darker than water in the system and is usually accompanied by oil stained debris (e.g. Styrofoam, etc.). The depth of oil can be measured with an oil/water interface probe, a stadia rod with water finding paste, a coliwasa, or collect a representative sample with a jar attached to a rod. II. Sediment Accumulation 1. Lower measuring device (e.g. stadia rod) into swirl chamber through service access provided (Figure 1). From a reference point at the top of the service access: 2. Record distance to top of sediment pile (Figure 2): inches 3. Record distance to top of water surface: inches 4. Calculate distance to sediment minus distance to water: inches 5. Schedule cleaning if value in Step #4 is 48 to 42 inches or less. The sediment storage capacity is exceeded when the depth to sediment is within 30 inches of the water surface and maintenance should be performed immediately. Page 11 of 15 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. 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, oil 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®. 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® during the maintenance process be handled and disposed in accordance with local and state environmental or other regulatory requirements. Figure 2. Maintain system when sediment is 42 to 48 inches below water surface to ensure proper system operation and performance. Maximum sediment storage capacity is reached when sediment is 30 inches below water surface. Figure 1. Measuring sediment in swirl chamber using stadia rod. Inspections are performed from the surface through the manhole access cover. 42-48” Page 12 of 15 MAINTENANCE SCHEDULE I. During Construction Inspect the Aqua-Swirl® every three (3) months and clean the system as needed. The Aqua-Swirl® should be inspected and cleaned at the end of construction regardless of whether it has reached its maintenance trigger (42 to 48 inches below water surface), sediment storage capacity (30 inches below water surface). II. First Year Post-Construction Inspect the Aqua-Swirl® 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 Aqua-Swirl® 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® 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 Aqua-Swirl® 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® is inspected. Maintenance should be performed on bypass structures as needed. MAINTENANCE COMPANY INFORMATION Company Name: Street Address: City: State/Prov.: Zip/Postal Code: Contact: Title: Office Phone: Cell Phone: Page 13 of 15 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: Oil present: Yes No Oil depth (inches): Measurement method and 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: Page 14 of 15 NOTES Additional Comments and/or Actions To Be Taken Time Frame ATTACHMENTS Attach site plan showing Aqua-Swirl® location. Attach detail drawing showing Aqua-Swirl® dimensions and model number. If a diversion configuration is used, attach details showing basic design and elevations (where feasible). Page 15 of 15 Aqua-Swirl® 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® 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® 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® 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® 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 Aqua-Swirl® should be cleaned annually regardless of whether it reaches its full sediment or floatable pollutant capacity. Z:\2019\19011L - CSO, Clay Center Road Elementary\Engineering\Drainage\Reports\O&M Manual Wet Pond with Native Banks Inspection Check List Z:\2019\19011L - CSO, Clay Center Road Elementary\Engineering\Drainage\Reports\O&M Manual 9. BMP LOCATION MAP 862 864863 865 866 864865 867 868 869868 869867866 8618628628 6 5864866 8 6 0 8 6 0858857 858858858857858858857846848 85 9858859860860 8 5 4 8 5 8 85 5 85 6 8 5 5 85 2 85 8 85 6 86 2863 857857 857 856854 8698678648698708658658668668668 66 868869869 869871865865865865865864863862868868867 1.1%-1.1%-1.1%Xref CC-Floor Plan-18094_MEP-rvt-1-Ground Floor - Phase 3.dwgXref CC-Floor Plan-18094_Struc_v18-rvt-1-Ground Floor - Phase 3.dwgXref CC-Floor Plan-18094_FOOD-rvt-1-Ground Floor - Phase 3.dwg UP UP UP REF.REF. VESTIBULEV102 STORAGE171 TOILET170 EARLYCHILDHOODCLASSOOM169 EARLYCHILDHOODCLASSROOM172 STORAGE174 TOILET173 VENDING001 STORAGE008 GIRLS007 BOYS005 MECH. / ELEC.006 OFFICIALS002 MEETINGROOM003 FAMILEYTOILET004 EQUIPMENTSTORAGE009 ATHLETICSTORAGE010 OFFICE823 BUILDINGSTORAGE822 RECEIVING824 KITCHEN817MAIN ELEC.826 CAFETERIA810 GYMNASIUM800 A.V.STORAGE811 JANITOR809 STUDENTTOILET808 STORAGE804 OFFICE131 LEVEL BOOKROOM127 PLATFORM805 GENERALSTORAGE /CHAIRSTORAGE801 P.E. OFFICE /STORAGE802 A.S. OFFICE /STORAGE803 OFFICE110 OFFICE109SMALLCONFERENCE108OFFICE102 TOILET116 1822 SFLGI ROOM140 878 SFCLASSROOM215 CLASSROOM325 CLASSROOM320 878 SFCLASSROOM315 STORAGE144 IDF165 STORAGE402 208 SFS.S. OFFICE167COATS401 TOILET203 TOILET204 COATS321 TOILET324TOILET323 COATS201 STAFFTOILET166 TOILET328 COATS301 CLASSROOM605 SMALL GROUPROOM427 OUTDOORSTORAGE132 COATS701 COATS601 872 SFCLASSROOM525872 SFCLASSROOM520 TOILET156STORAGE602IDF134 TOILET416 TOILET417 854 SFCLASSROOM410 878 SFCLASSROOM415 COATS521 SMALL GROUPROOM523 SMALL GROUPROOM423 872 SFCLASSROOM425 872 SFCLASSROOM420 COATS411 SMALL GROUPROOM413 COATS421 HALL422HALL522 CLASSROOM705 CLASSROOM710 CLASSROOM715 STORAGE702 TOILET711 TOILET712 CLASSROOM720 COATS716 HALL717 SMALL GROUPROOM718 CLASSROOM615 COATS611 HALL612 SMALL GROUPROOM613 TOILET617 TOILET616 CLASSROOM610 SMALL GROUPROOM709 HALL708 COATS707 TOILET604 TOILET606 JANITOR603 SMALL GROUPROOM627SMALL GROUPROOM722 CLASSROOM725 ELEC.703 TOILET704 TOILET706 SMALL GROUPROOM527 MAIN MECH.ROOM825 I.C. OFFICE168 SMALL GROUPROOM304 DRYSTORAGE818 OFFICE821 STAFFTOILET820LOCKER &LAUNDRY819 WAREWASHING816 HALL322 COATS501 VESTIBULE526 VESTIBULE426VESTIBULE721VESTIBULE626 HALL622 SMALL GROUPROOM623 COATS621 CLASSROOM625 CLASSROOM620 BOYS136 SINKS135 GIRLS138 VESTIBULEV104 CORRIDORC107 CORRIDORC700CORRIDORC800 ACTIVITYCOMMONS700 ACTIVITYCOMMONS600 CORRIDORC300 ACTIVITYCOMMONS400 CORRIDORC300 SECUREVESTIBULEV101 LARGECONFERENCE100 RAMP603 CORRIDORC101 CORRIDORC108 STAIRST-1 890 SFCLASSROOM505 889 SFCLASSROOM405 FAPCLASSROOM155 878 SFCLASSROOM515 268 SFOFFICE112 248 SFOFFICE113CLINIC115 EXAM117 SENSORY111TOILET107 STORAGE104 TESTSTORAGE114 OFFICE106OFFICE105 RECEPTION101 WORKROOM157 859 SFCLASSROOM510 STORAGE147 SENSORYROOM154 MAKER SPACE125 STORAGE126 CORRIDORC103 CORRIDORC104 WORKROOM103 STORAGE128 MDF130 985 SFART ROOM145 1703 SFDISCOVERYCENTER120 115 SFOFFICE121ELECTRIC129 STAFFTOILET148 GIRLS153BOYS151 STORAGE202 KILN ROOM146 MECHACCESS149 TOILET506 TOILET404 TOILET406 WORKROOM162 CONFERENCEROOM164MOTHERSROOM161 844 SFCLASSROOM210 ELECTRICAL3031034 SFMUSIC143 TOILET217 TOILET216 SMALL GROUPROOM213 HALL212 COATS211 CLASSROOM220 CORRIDORC102 CLASSROOM225 COATS221 HALL222 SMALL GROUPROOM223 STORAGE302 CORRIDORC200 TOILET517 TOILET516 COATS511HALL512SMALL GROUPROOM513 372 SF TEACHERSDINNING142 FAMILYTOILET139 VESTIBULEV103 STORAGE141 CORRIDORC106 SINKS150 STORAGE502 CHASE124 JANITOR403JANITOR503 TOILET504 855 SFCLASSROOM310 COATS311 TOILET314 TOILET313 HALL312 SMALL GROUPROOM227 ACTIVITYCOMMONS200 SMALL GROUPROOM316 SMALL GROUPROOM327 ACTIVITYCOMMONS300 VESTIBULE226 VESTIBULE326 OFFICE163 CORRIDORC109 CLASSROOM305900 SFCLASSROOM205 HALL412 CORRIDORC400 ACTIVITYCOMMONS500 CHASE539 STORAGE133 CORRIDORC600 CORRIDORC105 SERVING815 315B 310B ALCOVE807 130 808 809 811800C 321 137 109A102 115 129 155V101B V101DV101C V101A 824A 824B 131 120B 116 117 602 825A 826A 140B 152 150 826B 164 166 132B C105B V103A 505B 328 415B 410B 417 416 411 617 616 611 604 606 603 721 717 716 711 704 706 703 702 143B C105A C105CST 1 215A 810C143A C200C700 C500120E804 815B 100 101A 169172173 174 170 171 V102F V102D V102E V102C V102A V102B 157 159 101B 801 802 803 810B C400 800B 800A 825B 165 621723 623 725A720A 620A 520A525A 405A 425B 421 420B 420A425A625A406 404 410A 109B 134505A 422 412 525B520B522 521 515A 515B 517 516 511512105C104 103A 107 104 113 111 108106 112 110 807 127 120A 120C 125C 126 121B 140A 148 149 V103B 145A103B114 510A 142B 144 506 160 158B 147146 142A 161 205B 154 C300 162 163 202121A128 120D 145B203 204 212 205A 215B 211 216 217220A 225B220B222 221 225A 135 139 141 305B 502 312311 313810E 403 402 504 503 305A 323 527 526C 526A 526B132A 210B213 310A 320A 304 133009A 010 009B 001B 001C 007 005 004 003 002008 001A 006 V104C V104D 315A 314324 820818 823 821 C800 815C 815A 119 822 427 A3071 SENSORYROOM158 ISOLATION160 ISOLATION159NO PARKING NO P A R K I N G NO P A R K I N G NO PARKINGNO PARKING NO P A R K I N G NO P A R K I N G NO PARKINGNO PARKING NO P A R K I N G NO P A R K I N G NO PARKINGN89°33'54"E 497.18'N00°23'36"E 1277.20'S44°59'34"E 926.14'S00°27'00"W 754.36' N00°27'00"E 765.33'S89°38'07"W 456.04'N00°27'00"E 645.35' S00°27'00"W 519.35' S00°27'00"W 765.33'N89°38'07"E 456.04'N00°27'00"E 765.33'S89°38'07"W 456.04'N00°27'00"E 645.35' S00°27'00"W 519.35' S00°27'00"W 765.33'N89°38'07"E 456.04'FH VFDCPW S858.0858.7855. 6855 .1 WWWW W C.O .C.O.C.O.C.O .C.O .C.O.C.O.C.O.C.O.C.O . C.O .TYPE I I C .O. TYPE I I C.O .TYPE II C.O.TYPE IC.O. TYPE IC.O. TYPE IC.O.TYPE IC.O.TYP E I I C.O. TYPE IIC.O.T YPE I I C.O.T YPE I I C.O.T YPE I I C.O.C.O .C.O .C.O.T YPE I SHEET No.SCALE:Date:PROJECT:TITLE:Job No.8365 Keystone Crossing, Suite 201 Indianapolis, IN. 46240 (317) 202-0864 BMP LOCATIONBMP1"=150'CLAY CENTER6-17-201919011L S Project Site LOCATION MAP VICINITY MAP SITE Z:\2019\19011L - CSO, Clay Center Road Elementary\Engineering\Drainage\Reports\O&M Manual 10. BMP DETAILS & SPECIFICATIONS CLAY CENTER ROAD ELEMENTARY DETAILS OF AQUASWIRL AS-10 & WET POND WITH NATIVE BANKS DURABLE METAL GRATE TOP (REBAR CONSTRUCTION IS ACCEPTABLE) MAX OPENING SIZE 4.5" (REMOVABLE FOR MAINTENANCE PURPOSES) ALL METAL SURFACE SHALL BE COATED WITH ZRC COLD GALVANIZING COMPOUND AFTER WELDING WELDED PROTRUSIONS (4 TOTAL, 3" LONG MIN, 90° APART) TO KEEP GRATE IN PLACE 24" RCP EXIT PIPE FL 845.05 ONE 8" ORIFICE OPENING 851.00 8" CONC BASE EL 844.38 ONE 8" ORIFICE OPENING 853.76 TRASH RACK (SEE DETAIL) FL 855.80 PRINCIPAL SPILLWAY 2.83" 2.83" 4'-3" 1'-5" WELD 1" X 1" X 1/8" ANGLE OVER ALL EDGES (TYP) 3 LB/FT^2 EXPANDED STEEL GRATE ON TOP, BOTTOM, AND SIDES 1/2" DIAMETER HOLES @ 24" CNTRS MAX (TYP) 2" X 1/4" STEEL STOCK ALL AROUND WELD (TYP)2'-0" 85' EMERGENCY SPILLWAY REVETMENT-PROTECTED SPILLWAY OUTLET STRUCTURE SCALE: NONE REINFORCEMENT NOT SHOWN FOIR CLARITY BASE, WALLS & REINFORCEMENT SHALL BE PER TYPICAL MANHOLE OUTLET STRUCTURE 12 858.00 857.00 45° TRASH RACK DETAIL OPENINGS & EXITGRATED TOP PLAN 850.00841.00851.00T.O.B. 858.00EASEMENT15" MIN.6" MIN. TOPSOIL FORNATIVE WETLAND SEED(SEE L401)8' MIN. REQUIREDNORMAL POOL 851.00100 YEAR = 855.82.0'3141EMERGENCY SPILLWAYAT 857.00SAFETY SHELF10' MIN.2' COMPACTED CLAYLINER ON ALL PONDBANKS AND BOTTOM.COMPACT TO 90% MAX.MODIFIED PROCTORASTM D-1557.843.002.0' OF OVER EXCAVATION FOR SEDIMENT STORAGE2' COMPACTED CLAYLINER UNDER 6" OF TOPSOILOVER 10-FT. SAFETY SHELF.NOTES:1.A 10' SAFTEY FENCE SHALL BE PROVIDED.2.CLAY LINER MUST BE INSTALLED, COMPACTED ANDAPPROVED BEFORE ALLOWING SEDIMENT TO ENTERBASIN THROUGH PIPE SYSTEM.3.CARE MUST BE TAKEN TO PROTECT CLAY LINERWHEN REMOVING COLLECTED SEDIMENT AFTERCOMPLETION OF CONSTRUCTION.10WET POND WITH NATIVE BANKS CROSS SECTIONSCALE: NONELIMITS OF NATIVE VEG(SEE L401)853.00849.0041TYPICAL SIGN LOCATION 6SCALE: NONE* POST TO BESLOPEDDO NOT MOW SIGN DETAIL12"PRE-PAINTED GALVANIZED STEEL18"CONCRETE4"4"* CHANNEL POST(2#/Ft.) 8'-10" LONGDOFACEMATERIALAlum.80 Ga.MOW ORREFLECTIVEWHITE6' - 0"FINISHEDmin. 18"GREEN12"FINISH AND CONTRAST THE CHARACTERS, SYMBOLS ANDBACKGROUND OF SIGN SHALL BE EGGSHELL, MATTE, OROTHER NON-GLARE FINISH. CHARACTERS AND SYMBOLSSHALL CONTRAST WITH THEIR BACKGROUND, WITH EITHERLIGHT CHARACTERS ON A DARK BACKGROUND OR DARKCHARACTERS ON A LIGHT BACKGROUND.GRADENOTNATIVEVEGETATIONSPRAY