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HomeMy WebLinkAboutO&M Manual Project: ARDALAN PLAZA 331 W. Main Street Carmel, IN 46032 Prepared For: STUDIO M ARCHITECT 275 Veterans Wy, Suite 200 Carmel, IN 46033 Prepared By: CIVIL & ENVIRONMENTAL CONSULTANTS, INC. Indianapolis, Indiana Civil Engineer: Nick Justice, PE CEC Project 344-583 OCTOBER 2024 Operation & Maintenance Manual -i- Ardalan Plaza October 2024 TABLE OF CONTENTS 1.0 OWNER CONTACT INFORMATION ..........................................................................1 2.0 INTRODUCTION..............................................................................................................1 3.0 STORMWATER & DETENTION MAINTENANCE ...................................................1 4.0 WATER QUALITY SYSTEM MAINTENANCE ..........................................................2 4.1 Water Quality Devices Inspections ......................................................................... 2 5.0 SUMMARY ........................................................................................................................3 APPENDICES Appendix A – Sample Inspection Logs Appendix B – BMP Map & Details Appendix C – Contech Manufacturer’s Manual Appendix D – BMP Manufacturer’s 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 BMPs from and including the date this Agreement is executed by Owner to and including the date on which a new Agreement is filed with the City by another party who assumes all of the obligations and responsibilities of Owner as set forth herein. BMPs: Aqua-Swirl XC-4 Owner Signature Date Printed Name Company STATE OF INDIANA ) ) SS: COUNTY OF HAMILTON ) BEFORE ME, the undersigned, a Notary Public in and for said County and State, personally appeared Owner subscribed and sworn before this day of , . County of Residence Signature Commission Expiration Date Printed Name -1- Ardalan Plaza October 2024 1.0 OWNER CONTACT INFORMATION Owner’s Name: J.C Hart Company, Inc. C/O: John Hart Owner’s Address: 805 City Center Drive, #120 Carmel, IN 46032 Business Phone: 317-573-4800 The storm sewer improvements will be maintained and operated by J.C Hart Company, Inc. 2.0 INTRODUCTION The City of Carmel Stormwater Technical Standards Manual provides a variety of options for improving water quality using Best Management Practices (BMP). To maintain water quality within the BMP, light maintenance activities will be needed to manipulate hydrology. This document defines responsibilities for operating, inspecting, and maintaining the stormwater system at the Palazzo Apartment. 3.0 STORMWATER & DETENTION MAINTENANCE Storm sewer pipes, underground detention pipes, and outlet control weir structure should be regularly maintained and cleaned of debris. All piping should be inspected monthly and after each rainfall event, especially during the autumn season. Outlet control structure should be inspected more regularly when falling leaves are present. Sample inspection logs are included in Appendix A. Refer to Appendix B for Maintenance Map and Details. Underground Contech CMP Detention System should be maintained per provided maintenance manual obtained from Contech. Refer to Appendix C for maintenance manual details. Driveway Trench Drain should be maintained per provided maintenance manual obtained from NDS. Refer to Appendix C for maintenance manual details. Disposal of all sediment must be in accordance with all federal, state, and local requirements. Additionally, J.C Hart Company, Inc. will perform annual compliance inspections of all permanent BMPs. -2- Ardalan Plaza October 2024 4.0 WATER QUALITY SYSTEM MAINTENANCE The City of Carmel reserves the right to enter the property at any time to inspect the operation of any Best Management Practices (BMP) onsite. The following is a list and description of the BMPs at the Palazzo Apartment: Aqua-Swirl XC-4 x1 See Appendix B for the location and details of all infrastructure and water quality BMPs. 4.1 WATER QUALITY DEVICES INSPECTIONS The BMPs require certain items to be inspected on a monthly or annual basis during the existence of the BMPs. This inspection is the responsibility of J.C Hart Company, Inc. More frequent inspections may need to take place during periods of heavy rainfall. For each drainage system listed below, the following details shall be inspected monthly and after major rainfall events (>1 inch in 24 hours). Also refer to sample inspection logs in Appendix A. • Underground Detention – The underground detention water quality device should be inspected every 6 months at a minimum. Inspect the access manhole and drain inlet pipes for clogging or leaks. Remove all debris/sediment and dispose of in accordance with all applicable federal and state requirements. Cleaning shall be done without the use of detergents or surfactants. Inspect mechanical water quality device for cracks or damage. Repair as necessary. Water and sediment from cleaning procedures should NOT be dumped into a sanitary sewer. • BMP inlets and outlets (piping) – Remove all debris to ensure openings are clear and operating properly. The maximum sediment depth should be no more than ¼ of the pipe diameter and up to a maximum depth of 6”. Check for rip rap stone displacement and erosion of the apron surrounding pipe end section. Repair immediate failure. Water and sediment from cleaning procedures should NOT be dumped into a sanitary sewer. See Appendix B for the location and details of all infrastructure and water quality BMPs. If these maintenance guidelines are not followed, the BMP’s may fail to attain water quality objectives set forth in the regulations. The BMP shall be owned by the developer/property owner; any and all maintenance and repair activities shall be paid for by the owner. Documentation of all repairs -3- Ardalan Plaza October 2024 should be kept on file by the owner for review by City of Carmel inspectors. Sample inspection logs are included in Appendix A. Right of Entry - The City of Carnel may inspect the premises at any time necessary to determine the functionality of any BMPs onsite. City of Carmel Note - The BMPs shall be owned by the developer/property owner; any and all maintenance and repair activities shall be paid for by J.C Hart Company, Inc. The requirements of the O&M Manual shall remain in effect regardless of change in ownership of the development. Furthermore, it shall be the responsibility of the BMP owner to provide the O&M Manual to future parties who will assume responsibility for the operation and maintenance of the post-construction storm water quality measures. J.C Hart Company, Inc. will perform annual compliance inspections of all onsite BMPs and provide the reports to City of Carmel Engineering Department. The first report is due one year after construction is completed, with subsequent reports due each year within the same month of the initial report. If there are any deficiencies found during the inspection, these should be addressed. If the inspection report is not received within the month it is due, or if there are deficiencies which were not included in the report, or if any deficiencies included in the report are not addressed in a timely manner, the BMP owner faces enforcement action from the City. Refer to Agreement in the Manual. 5.0 SUMMARY The objective of the operation and maintenance manual is to allow the owner of the storm management system to manage the system to the City of Carmel specifications. The City requires minimal information for their records: 1. Maintenance agreement. The agreement requires the owner to comply with the maintenance set forth in the manual. 2. Monthly and annual data sheets and repair documentation must be kept on site for the City Inspectors to review during their annual inspection of the site. APPENDIX A SAMPLE INSPECTION LOGS Post-Construction BMP Inspection Checklist Inlet Structures/ Pipes Drainage Feature Maintenance and Management Inspection Checklist Project: ________________________________________________________________________________ Location: _______________________________________________________________________________ Date: ______________________________________ Time: _____________________________________ Inspector: __________________________________ Title: ______________________________________ Signature: ___________________________________________________ Maintenance Item Satisfactory/ Unsatisfactory Comments Manhole/Inlet Structures Drainage clear and functioning Concrete/ Masonry condition Excessive sediment buildup- sump not more than 50% full of sediment Inlet area clear of debris Condition of steps Underground Detention Sediments/Trash not clogging outlet Salting/De-icing agents not within system System do not contain excessive amount of debris Manhole covers and inspection ports properly secured Refer to Contech manual for any further maintenance items Aqua-Swirl XC-4 Refer to manufacturer’s recommended maintenance handbook Actions to be taken:___________________________________________________________________________________________ APPENDIX B BMP MAP & DETAILS GRADING LEGEND: PROPOSED BUILDING F.F.E. = 831.50 BENCHMARKS: UTILITY NOTE: 8 A B 34567 12 C D E F G H 8 34567 12 A B C D E F G H DE S C R I P T I O N DA T E NO RE V I S I O N R E C O R D DA T E : DW G S C A L E : DR A W N B Y : CH E C K E D B Y : AP P R O V E D B Y : PR O J E C T N O : SHEET OF DRAWING NO.: 34 4 - 5 8 3 OC T O B E R 0 8 , 2 0 2 4 DR A F T 26 ST U D I O M A R C H I T E C T AR D A L A N P L A Z A 33 1 W . M A I N S T R E E T CA R M E L , I N D I A N A 4 6 0 3 2 Ci v i l & E n v i r o n m e n t a l Co n s u l t a n t s , I n c . ww w . c e c i n c . c o m 53 0 E . O h i o S t r e e t Ph : 3 1 7 . 6 5 5 . 7 7 7 7 In d i a n a p o l i s , I N 4 6 2 0 4 Su i t e G DRAFT NORTH DA T E : DW G S C A L E : DR A W N B Y : CH E C K E D B Y : AP P R O V E D B Y : PR O J E C T N O : SHEET OF DRAWING NO.: 1" = 2 0 ' DR A F T DR A F T DR A F T BMP 9 DR A I N A G E P L A N CITY OF CARMEL NOTES: 8 A B 34567 12 C D E F G H 8 34567 12 A B C D E F G H DE S C R I P T I O N DA T E NO RE V I S I O N R E C O R D DA T E : DW G S C A L E : DR A W N B Y : CH E C K E D B Y : AP P R O V E D B Y : PR O J E C T N O : SHEET OF DRAWING NO.: 34 4 - 5 8 3 OC T O B E R 0 8 , 2 0 2 4 DR A F T 26 ST U D I O M A R C H I T E C T AR D A L A N P L A Z A 33 1 W . M A I N S T R E E T CA R M E L , I N D I A N A 4 6 0 3 2 Ci v i l & E n v i r o n m e n t a l Co n s u l t a n t s , I n c . ww w . c e c i n c . c o m 53 0 E . O h i o S t r e e t Ph : 3 1 7 . 6 5 5 . 7 7 7 7 In d i a n a p o l i s , I N 4 6 2 0 4 Su i t e G DRAFT SI T E D E T A I L S C803 BE B NP J AS N O T E D 18 8 A B 34567 12 C D E F G H 8 34567 12 A B C D E F G H DE S C R I P T I O N DA T E NO RE V I S I O N R E C O R D DA T E : DW G S C A L E : DR A W N B Y : CH E C K E D B Y : AP P R O V E D B Y : PR O J E C T N O : SHEET OF DRAWING NO.: 34 4 - 5 8 3 OC T O B E R 0 8 , 2 0 2 4 DR A F T 26 ST U D I O M A R C H I T E C T AR D A L A N P L A Z A 33 1 W . M A I N S T R E E T CA R M E L , I N D I A N A 4 6 0 3 2 Ci v i l & E n v i r o n m e n t a l Co n s u l t a n t s , I n c . ww w . c e c i n c . c o m 53 0 E . O h i o S t r e e t Ph : 3 1 7 . 6 5 5 . 7 7 7 7 In d i a n a p o l i s , I N 4 6 2 0 4 Su i t e G DRAFT DR A I N A G E D E T A I L S C804 BE B NP J AS N O T E D 19 PLAN VIEW ELEVATION VIEW 8 A B 34567 12 C D E F G H 8 34567 12 A B C D E F G H DE S C R I P T I O N DA T E NO RE V I S I O N R E C O R D DA T E : DW G S C A L E : DR A W N B Y : CH E C K E D B Y : AP P R O V E D B Y : PR O J E C T N O : SHEET OF DRAWING NO.: 34 4 - 5 8 3 OC T O B E R 0 8 , 2 0 2 4 DR A F T 26 ST U D I O M A R C H I T E C T AR D A L A N P L A Z A 33 1 W . M A I N S T R E E T CA R M E L , I N D I A N A 4 6 0 3 2 Ci v i l & E n v i r o n m e n t a l Co n s u l t a n t s , I n c . ww w . c e c i n c . c o m 53 0 E . O h i o S t r e e t Ph : 3 1 7 . 6 5 5 . 7 7 7 7 In d i a n a p o l i s , I N 4 6 2 0 4 Su i t e G DRAFT DR A I N A G E D E T A I L S C805 BE B NP J AS N O T E D DETAIL 406 - OUTLET CONTROL STRUCTURE #102 1 09 / 2 7 / 2 0 2 3 RF I # 4 20 APPENDIX C CONTECH MANUFACTURER’S MANUAL Underground stormwater detention and infiltration systems must be inspected and maintained at regular intervals for purposes of performance and longevity. Inspection Inspection is the key to effective maintenance of CMP detention systems and is easily performed. Contech recommends ongoing, quarterly inspections. The rate at which the system collects pollutants will depend more on site specific activities rather than the size or configuration of the system. Inspections should be performed more often in equipment washdown areas, in climates where sanding and/or salting operations take place, and in other various instances in which one would expect higher accumulations of sediment or abrasive/corrosive conditions. A record of each inspection is to be maintained for the life of the system. Maintenance CMP detention systems should be cleaned when an inspection reveals accumulated sediment or trash is clogging the discharge orifice. Accumulated sediment and trash can typically be evacuated through the manhole over the outlet orifice. If maintenance is not performed as recommended, sediment and trash may accumulate in front of the outlet orifice. Manhole covers should be securely seated following cleaning activities. Contech suggests that all systems be designed with an access/inspection manhole situated at or near the inlet and the outlet orifice. Should it be necessary to get inside the system to perform maintenance activities, all appropriate precautions regarding confined space entry and OSHA regulations should be followed. Systems are to be rinsed, including above the spring line, annually soon after the spring thaw, and after any additional use of salting agents, as part of the maintenance program for all systems where salting agents may accumulate inside the pipe. Maintaining an underground detention or infiltration system is easiest when there is no flow entering the system. For this reason, it is a good idea to schedule the cleanout during dry weather. The foregoing inspection and maintenance efforts help ensure underground pipe systems used for stormwater storage continue to function as intended by identifying recommended regular inspection and maintenance practices. Inspection and maintenance related to the structural integrity of the pipe or the soundness of pipe joint connections is beyond the scope of this guide. Contech® CMP Detention Inspection and Maintenance Guide CMP MAINTENANCE GUIDE 2/17 PDF © 2017 Contech Engineered Solutions LLC All rights reserved. Printed in USA. ENGINEERED SOLUTIONS NOTHING IN THIS CATALOG SHOULD BE CONSTRUED AS A WARRANTY. APPLICATIONS SUGGESTED HEREIN ARE DESCRIBED ONLY TO HELP READERS MAKE THEIR OWN EVALUATIONS AND DECISIONS, AND ARE NEITHER GUARANTEES NOR WARRANTIES OF SUITABILITY FOR ANY APPLICATION. CONTECH MAKES NO WARRANTY WHATSOEVER, EXPRESS OR IMPLIED, RELATED TO THE APPLICATIONS, MATERIALS, COATINGS, OR PRODUCTS DISCUSSED HEREIN. ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND ALL IMPLIED WARRANTIES OF FITNESS FOR ANY PARTICULAR PURPOSE ARE DISCLAIMED BY CONTECH. SEE CONTECH’S CONDITIONS OF SALE (AVAILABLE AT WWW.CONTECHES.COM/COS) FOR MORE INFORMATION CMP DETENTION SYSTEMS Underground stormwater detention and infiltration systems must be inspected and maintained at regular intervals for purposes of performance and longevity. Inspection Inspection is the key to effective maintenance of CMP detention systems and is easily performed. Contech recommends ongoing, annual inspections. Sites with high trash load or small outlet control orifices may need more frequent inspections. The rate at which the system collects pollutants will depend more on- site specific activities rather than the size or configuration of the system. Inspections should be performed more often in equipment washdown areas, in climates where sanding and/or salting operations take place, and in other various instances in which one would expect higher accumulations of sediment or abrasive/ corrosive conditions. A record of each inspection is to be maintained for the life of the system. NOTHING IN THIS CATALOG SHOULD BE CONSTRUED AS A WARRANTY. APPLICATIONS SUGGESTED HEREIN ARE DESCRIBED ONLY TO HELP READERS MAKE THEIR OWN EVALUATIONS AND DECISIONS, AND ARE NEITHER GUARANTEES NOR WARRANTIES OF SUITABILITY FOR ANY APPLICATION. CONTECH MAKES NO WARRANTY WHATSOEVER, EXPRESS OR IMPLIED, RELATED TO THE APPLICATIONS, MATERIALS, COATINGS, OR PRODUCTS DISCUSSED HEREIN. ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND ALL IMPLIED WARRANTIES OF FITNESS FOR ANY PARTICULAR PURPOSE ARE DISCLAIMED BY CONTECH. SEE CONTECH’S CONDITIONS OF SALE (AVAILABLE AT WWW.CONTECHES.COM/COS) FOR MORE INFORMATION. CMP MAINTENANCE GUIDE 10/19 PDF © 2019 CONTECH ENGINEERED SOLUTIONS LLC, A QUIKRETE COMPANY ALL RIGHTS RESERVED. PRINTED IN USA. Maintenance CMP detention systems should be cleaned when an inspection reveals accumulated sediment or trash is clogging the discharge orifice. Accumulated sediment and trash can typically be evacuated through the manhole over the outlet orifice. If maintenance is not performed as recommended, sediment and trash may accumulate in front of the outlet orifice. Manhole covers should be securely seated following cleaning activities. Contech suggests that all systems be designed with an access/inspection manhole situated at or near the inlet and the outlet orifice. Should it be necessary to get inside the system to perform maintenance activities, all appropriate precautions regarding confined space entry and OSHA regulations should be followed. Annual inspections are best practice for all underground systems. During this inspection if evidence of salting/de-icing agents is observed within the system, it is best practice for the system to be rinsed, including above the spring line soon after the spring thaw as part of the maintenance program for the system. Maintaining an underground detention or infiltration system is easiest when there is no flow entering the system. For this reason, it is a good idea to schedule the cleanout during dry weather. The foregoing inspection and maintenance efforts help ensure underground pipe systems used for stormwater storage continue to function as intended by identifying recommended regular inspection and maintenance practices. Inspection and maintenance related to the structural integrity of the pipe or the soundness of pipe joint connections is beyond the scope of this guide. Contech® CMP Detention Inspection and Maintenance Guide ENGINEERED SOLUTIONS CMP DETENTION SYSTEMS APPENDIX D BMP MANUFACTURER’S MANUAL Stormwater Treatment System Inspection and Maintenance Manual 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 June 2022 © AquaShieldTM, Inc. 2022. All rights reserved. Floatable debris in the Aqua-Swirl® Aqua-Swirl® Stormwater Treatment System The Aqua-Swirl® Stormwater Treatment System (Aqua-Swirl®) is a vortex-type hydrodynamic separator designed and supplied by AquaShieldTM, Inc. (AquaShieldTM). Aqua-Swirl® technology removes pollutants including suspended solids, trash, floatables and free-floating oil from stormwater runoff. Both treatment and storage are accomplished in the single swirl chamber without the use of multiple or hidden, blind access chambers. Aqua-Swirl® 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® 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. © AquaShieldTM, Inc. 2022. All rights reserved. Example of Aqua-Swirl® manhole cover Inspection The Aqua-Swirl® can be inspected from the surface thereby eliminating the need to enter the system to determine when cleanout should be performed. AquaShieldTM recommends in most cases that a quarterly inspection take place 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. The typical inspection schedule for subsequent years is reduced to semi-annual inspection events. Table 1 below lists the available Aqua-Swirl® models as well their inner diameters, oil/debris storage capacities and the sediment storage capacities. Table 1. Aqua-Swirl® Storage Capacities Aqua-Swirl® Model Inner Diameter (ft) Oil/Debris Storage Capacity (gal) Sediment Storage Capacity (ft3) AS-2 2.5 37 6 AS-3 3.5 110 11 AS-4 4.5 190 19 AS-5 270 23 AS-6 390 33 AS-7 540 45 AS-8 710 58 AS-9 910 74 AS-10 1,130 91 AS-11 1,422 110 AS-12 1,698 131 AS-13 13.0 1,986 154 AS-XX Custom* * Custom designs to meet site-specific criteria, can include multiple (twin) units for increased flow and materials storage capacity. 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5 © AquaShieldTM, Inc. 2022. All rights reserved. Sediment inspection using a stadia rod Maintenance The Aqua-Swirl® has been designed to minimize and simplify the inspection and maintenance process. The single chamber of the system can be inspected and maintained entirely from the surface thereby eliminating the need for confined space entry. There are no areas of the structure that are blocked from visual inspection or periodic cleaning. Inspection of any free-floating oil and floatable trash can be directly observed and maintained through the manhole access provided directly over the swirl chamber. If so equipped, the trash screen can be exposed once the water is removed from the unit and inspected. Aqua-Swirl® Inspection Procedure To inspect the Aqua-Swirl®, 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 information plate affixed inside the access riser which provides our contact information, the Aqua-Swirl® model size, and serial number. 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. 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 captured sediment to accumulate in a semi-conical fashion as illustrated below. 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. 42-48” © AquaShieldTM, Inc. 2022. All rights reserved. Maximum recommended sediment depth prior to cleanout is 14 inches for all Aqua-Swirl® models (not to scale) Aqua-Swirl® Cleanout Procedure Cleaning the Aqua-Swirl® is simple and quick. Free-floating oil and floatable trash 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® 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®, there are no restrictions to impede on-site maintenance tasks. If applicable, the trash screen can be reached from the surface and cleaned with a vacuum hose. 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® and any external bypass structures (divergent and convergent) be handled and disposed of in full accordance with any applicable local and state requirements. 14” © AquaShieldTM, Inc. 2022. All rights reserved. Vacuum (vactor) truck quickly cleans the single open access swirl chamber Aqua-Swirl® Inspection and Maintenance Work Sheets on following pages © AquaShieldTM, Inc. 2022. All rights reserved. Aqua-Swirl® Inspection and Maintenance 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/Debris and Oil 1. Remove manhole lid to expose liquid surface of the Aqua-Swirl®. 2. Remove floatable trash/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 of oil and/or trash is present. 4. If applicable, clean trash screen surface with vacuum hose. 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 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 14 inches for all models. Consult system shop drawing for treatment chamber depth as measured from the inlet pipe invert to base of the unit. © AquaShieldTM, Inc. 2022. All rights reserved. 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 to remove sediment, trash, 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. MAINTENANCE SCHEDULE I. During Construction Inspect the Aqua-Swirl® full capture device 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. 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, trash or floatable pollutant storage capacity. III. Second and Subsequent Years Post-Construction If the Aqua-Swirl® did not reach full sediment or floatable trash capacity in the First Year Post-Construction period, the system can be inspected and cleaned once annually. © AquaShieldTM, Inc. 2022. All rights reserved. If the Aqua-Swirl® reached full sediment, trash 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, trash 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: 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: © AquaShieldTM, Inc. 2022. All rights reserved. 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: 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). © AquaShieldTM, Inc. 2022. All rights reserved. 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, trash 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, trash or floatable pollutant capacity. © AquaShieldTM, Inc. 2022. All rights reserved.