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HomeMy WebLinkAboutOMmanual.Freddys-RecordedTABLE OF CONTENTS Section I: Manual A. About the BMP’s B. Contact Information for BMP owner C. BMP Owner Acknowledgement Agreement D. Right –of-Entry Statement E. BMP Description & Operation F. Maintenance Requirements G. Site Drawings H. Inspection Report I. Spills, Reporting, Containment & Response Per 327 IAC 2-6.1-1 Section II: Appendix A. BMP Owner Acknowledgment Agreement B. Right-of-Entry Statement C. Site Drawings D. Stormwater Quality Data E. Maintenance Guidelines F. Inspection Report SECTION I: MANUAL A. About the BMP A Water quality BMP is a device or methodology used to remove total suspended solids (TSS) and free oil (TPH) from storm water run-off. This device or methodology, with proper maintenance, will filter the storm water run-off, to help prevent downstream contamination of streams and waterways. B. Contact Information for the BMP Owner i. Freddy’s Frozen Custard & Steakburgers (ATTN: Blake Epperson / Ben Hesse) ii. Address: 102 North Fountain Street; Wichita, KS 67208 iii. Phone: 316-617-8880 iv. Email: bepperson@freddysindy.com C. BMP Owner Acknowledgement Agreement See appendix A. D. Right-of-Entry Statement Allows the City of Carmel to inspect and maintain the BMP structure as necessary. See appendix B. E. BMP Description & Operation The stormwater runoff from the site will discharge into a Stormwater Quality Treatment unit manufactured by Hydro-International known as a Downstream Defender® Storm Water Quality Unit. This hydrodynamic separation method will capture the required Total Suspended Solids (TSS) along with floating debris and hydrocarbons prior to discharging into the detention pond. We have selected a 4- foot diameter model with a maximum Treatment Flow Rate for this sized structure 3.0 cfs. The calculated peak discharge treatment rate for the proposed site improvements routed through the 4-foot diameter models is 1.00 cfs. Downstream Defender® is an approved Stormwater Quality Unit (SQU) in an off- line configuration and meets all the requirements of the City of Carmel Stormwater Technical Standard Manual; therefore, the Downstream Defender® Storm Water Quality Unit is an ideal fit for this development. The Connecting/Diversion Structure with Sump into the Downstream Defender should be periodically cleaned and maintained as a BMP. A secondary BMP being utilized for this project will be a new underground detention facility (UGD) located south of the proposed building underneath the parking lot. The underground detention system will include (259) StormTech SC- 310 chambers along with crushed stone bedding above, below and in between. The fabric-wrapped stone and chambers within the UGD facility provide for settling and filtration of sediment as storm water rises in the Isolator Row and ultimately passes through the filter fabric. An inspection port will be installed over the Isolator Row for periodic checks for the potential need for maintenance. Stormwater runoff will first flow through the 4-foot diameter Downstream Defender® Storm Water Quality Unit and then travel to the new StormTech® UGD facility. Proper maintenance for both the Downstream Defender® Storm Water Quality Unit and the StormTech® UGD facility will provide a Post-Construction storm water quality benefit. For more information concerning the BMP locations/structures, see appendix C. F. Maintenance Requirements i. See appendix E ii. See appendix E iii. See appendix E iv. See appendix E v. Property Management Company – T.B.D. G. Site Drawings i. See appendix C ii. See appendix C iii. See appendix C iv. See appendix C H. Inspection Reports The first inspection 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. See appendix D for inspection form. A written yearly inspection report must be submitted to: City Hall – Department of Engineering Attn: Stormwater Administrator One Civic Square Carmel, IN 46032 I. Spills, Reporting, Containment & Response Per 327 IAC 2-6.1-1 327 IAC 2-6.1-1 Applicability Authority: IC 13-14-8-7 Affected: IC 13-11-2; IC 13-18-1; IC 13-18-3; IC 13-18-8; IC 13-18-17 Sec. 1. This rule applies to the reporting and containment of, and the response to those spills of hazardous substances, extremely hazardous substances, petroleum, and objectionable substances that are of a quantity, type, duration and in a location as to damage the waters of the state. Nothing in this rule is intended to affect reporting or clean-up requirements set forth by other Federal, State, or Local laws. (Water Pollution Control Board; 327 IAC 2-6.1-1; filed Feb 25, 1997, 1:00 p.m.: 20 IR 1731; readopted filed Jan 10, 2001, 3:23 p.m.: 24 IR 1518; readopted filed Nov 21, 2007, 1:16 p.m.: 20071219-IR-327070553BFA) "Spill" means any unexpected, unintended, abnormal, or unapproved dumping, leakage, drainage, seepage, discharge, or other loss of petroleum, hazardous substances, extremely hazardous substances, or objectionable substances. The term does not include releases to impermeable surfaces when the substance does not migrate off the surface or penetrate the surface and enter the soil. Spill Emergency Contact Freddy’s Frozen Custard & Steakburgers ATTN: Blake Epperson (Address TBD) Phone: (316) 617-8880 SECTION II: APPENDIX A. BMP Owner Acknowledgment Agreement B. Right-of-Entry Statement RIGHT-OF-ENTRY STATEMENT Freddy’s Frozen Custard & Steakburgers grants permission and allows the City of Carmel and their employees, contracted parties, and constituents the right-of-entry on 9701/9703 N. Michigan Road (US 421) to inspect and maintain the BMPs as noted on the Freddy’s Frozen Custard & Steakburgers construction plans, Project Number WAX.001, Downstream Defender Structure BMP, as referenced on drawing number C10.3, StormTech Underground Detention Facility, as referenced on the ADS, Inc. (StormTech) Detail sheets, certified: 10/26/18. C. Site Drawings ©2013 ADS, INC. PROJECT INFORMATION ADS SALES REP: ENGINEERED PRODUCT MANAGER: PROJECT NO: ADVANCED DRAINAGE SYSTEMS, INC. R FREDDY'S FROZEN CUSTARD CARMEL, IN JOHN ADAMS 317-506-1838 JOHN.ADAMS@ADS-PIPE.COM S105607 JOE ROGERS 317-417-0385 JOE.ROGERS@ADS-PIPE.COM STORMTECH CHAMBER SPECIFICATIONS 1.CHAMBERS SHALL BE STORMTECH SC-740 OR SC-310. 2.CHAMBERS SHALL BE MANUFACTURED FROM VIRGIN POLYPROPYLENE OR POLYETHYLENE RESINS. 3.CHAMBER ROWS SHALL PROVIDE CONTINUOUS, UNOBSTRUCTED INTERNAL SPACE WITH NO INTERNAL SUPPORT PANELS THAT WOULD IMPEDE FLOW OR LIMIT ACCESS FOR INSPECTION. 4.THE STRUCTURAL DESIGN OF THE CHAMBERS, THE STRUCTURAL BACKFILL, AND THE INSTALLATION REQUIREMENTS SHALL ENSURE THAT THE LOAD FACTORS SPECIFIED IN THE AASHTO LRFD BRIDGE DESIGN SPECIFICATIONS, SECTION 12.12, ARE MET FOR: 1) LONG-DURATION DEAD LOADS AND 2) SHORT-DURATION LIVE LOADS, BASED ON THE AASHTO DESIGN TRUCK WITH CONSIDERATION FOR IMPACT AND MULTIPLE VEHICLE PRESENCES. 5.CHAMBERS SHALL MEET ASTM F2922 (POLYETHYLENE) OR ASTM F2418-16 (POLYPROPYLENE), "STANDARD SPECIFICATION FOR THERMOPLASTIC CORRUGATED WALL STORMWATER COLLECTION CHAMBERS". 6.CHAMBERS SHALL BE DESIGNED AND ALLOWABLE LOADS DETERMINED IN ACCORDANCE WITH ASTM F2787, "STANDARD PRACTICE FOR STRUCTURAL DESIGN OF THERMOPLASTIC CORRUGATED WALL STORMWATER COLLECTION CHAMBERS". 7.ONLY CHAMBERS THAT ARE APPROVED BY THE SITE DESIGN ENGINEER WILL BE ALLOWED. THE CHAMBER MANUFACTURER SHALL SUBMIT THE FOLLOWING UPON REQUEST TO THE SITE DESIGN ENGINEER FOR APPROVAL BEFORE DELIVERING CHAMBERS TO THE PROJECT SITE: a.A STRUCTURAL EVALUATION SEALED BY A REGISTERED PROFESSIONAL ENGINEER THAT DEMONSTRATES THAT THE SAFETY FACTORS ARE GREATER THAN OR EQUAL TO 1.95 FOR DEAD LOAD AND 1.75 FOR LIVE LOAD, THE MINIMUM REQUIRED BY ASTM F2787 AND BY AASHTO FOR THERMOPLASTIC PIPE. b.A STRUCTURAL EVALUATION SEALED BY A REGISTERED PROFESSIONAL ENGINEER THAT DEMONSTRATES THAT THE LOAD FACTORS SPECIFIED IN THE AASHTO LRFD BRIDGE DESIGN SPECIFICATIONS, SECTION 12.12, ARE MET. THE 50 YEAR CREEP MODULUS DATA SPECIFIED IN ASTM F2418 OR ASTM F2922 MUST BE USED AS PART OF THE AASHTO STRUCTURAL EVALUATION TO VERIFY LONG-TERM PERFORMANCE. c.STRUCTURAL CROSS SECTION DETAIL ON WHICH THE STRUCTURAL EVALUATION IS BASED. 8.CHAMBERS AND END CAPS SHALL BE PRODUCED AT AN ISO 9001 CERTIFIED MANUFACTURING FACILITY. IMPORTANT - NOTES FOR THE BIDDING AND INSTALLATION OF THE SC-310/SC-740 SYSTEM 1.STORMTECH SC-310 & SC-740 CHAMBERS SHALL NOT BE INSTALLED UNTIL THE MANUFACTURER'S REPRESENTATIVE HAS COMPLETED A PRE-CONSTRUCTION MEETING WITH THE INSTALLERS. 2.STORMTECH SC-310 & SC-740 CHAMBERS SHALL BE INSTALLED IN ACCORDANCE WITH THE "STORMTECH SC-310/SC-740/DC-780 CONSTRUCTION GUIDE". 3.CHAMBERS ARE NOT TO BE BACKFILLED WITH A DOZER OR AN EXCAVATOR SITUATED OVER THE CHAMBERS. STORMTECH RECOMMENDS 3 BACKFILL METHODS: ·STONESHOOTER LOCATED OFF THE CHAMBER BED. ·BACKFILL AS ROWS ARE BUILT USING AN EXCAVATOR ON THE FOUNDATION STONE OR SUBGRADE. ·BACKFILL FROM OUTSIDE THE EXCAVATION USING A LONG BOOM HOE OR EXCAVATOR. 4.THE FOUNDATION STONE SHALL BE LEVELED AND COMPACTED PRIOR TO PLACING CHAMBERS. 5.JOINTS BETWEEN CHAMBERS SHALL BE PROPERLY SEATED PRIOR TO PLACING STONE. 6.MAINTAIN MINIMUM - 6" (150 mm) SPACING BETWEEN THE CHAMBER ROWS. 7.EMBEDMENT STONE SURROUNDING CHAMBERS MUST BE A CLEAN, CRUSHED, ANGULAR STONE 3/4-2" (20-50 mm). 8.THE CONTRACTOR MUST REPORT ANY DISCREPANCIES WITH CHAMBER FOUNDATION MATERIALS BEARING CAPACITIES TO THE SITE DESIGN ENGINEER. 9.ADS RECOMMENDS THE USE OF "FLEXSTORM CATCH IT" INSERTS DURING CONSTRUCTION FOR ALL INLETS TO PROTECT THE SUBSURFACE STORMWATER MANAGEMENT SYSTEM FROM CONSTRUCTION SITE RUNOFF. NOTES FOR CONSTRUCTION EQUIPMENT 1.STORMTECH SC-310 & SC-740 CHAMBERS SHALL BE INSTALLED IN ACCORDANCE WITH THE "STORMTECH SC-310/SC-740/DC-780 CONSTRUCTION GUIDE". 2.THE USE OF CONSTRUCTION EQUIPMENT OVER SC-310 & SC-740 CHAMBERS IS LIMITED: ·NO EQUIPMENT IS ALLOWED ON BARE CHAMBERS. ·NO RUBBER TIRED LOADERS, DUMP TRUCKS, OR EXCAVATORS ARE ALLOWED UNTIL PROPER FILL DEPTHS ARE REACHED IN ACCORDANCE WITH THE "STORMTECH SC-310/SC-740/DC-780 CONSTRUCTION GUIDE". ·WEIGHT LIMITS FOR CONSTRUCTION EQUIPMENT CAN BE FOUND IN THE "STORMTECH SC-310/SC-740/DC-780 CONSTRUCTION GUIDE". 3.FULL 36" (900 mm) OF STABILIZED COVER MATERIALS OVER THE CHAMBERS IS REQUIRED FOR DUMP TRUCK TRAVEL OR DUMPING. USE OF A DOZER TO PUSH EMBEDMENT STONE BETWEEN THE ROWS OF CHAMBERS MAY CAUSE DAMAGE TO THE CHAMBERS AND IS NOT AN ACCEPTABLE BACKFILL METHOD. ANY CHAMBERS DAMAGED BY THE "DUMP AND PUSH" METHOD ARE NOT COVERED UNDER THE STORMTECH STANDARD WARRANTY. CONTACT STORMTECH AT 1-888-892-2694 WITH ANY QUESTIONS ON INSTALLATION REQUIREMENTS OR WEIGHT LIMITS FOR CONSTRUCTION EQUIPMENT. 0015'30'SHEET OFDATE:PROJECT #:DRAWN:CHECKED:THIS DRAWING HAS BEEN PREPARED BASED ON INFORMATION PROVIDED TO ADS UNDER THE DIRECTION OF THE SITE DESIGN ENGINEER OR OTHER PROJECT REPRESENTATIVE. THE SITE DESIGN ENGINEER SHALL REVIEW THIS DRAWING PRIOR TO CONSTRUCTION. IT IS THE ULTIMATERESPONSIBILITY OF THE SITE DESIGN ENGINEER TO ENSURE THAT THE PRODUCT(S) DEPICTED AND ALL ASSOCIATED DETAILS MEET ALL APPLICABLE LAWS, REGULATIONS, AND PROJECT REQUIREMENTS.4640 TRUEMAN BLVDHILLIARD, OH 43026ADVANCED DRAINAGE SYSTEMS, INC.R2 610/17/18S105607SVORWDCARMEL, INFREDDY'S FROZEN CUSTARDDATEDRWNCHKDDESCRIPTIONPROPOSED LAYOUT 259 STORMTECH SC-310 CHAMBERS 66 STORMTECH SC-310 END CAPS 6 STONE ABOVE (in) 6 STONE BELOW (in) 40 % STONE VOID 8860 INSTALLED SYSTEM VOLUME (CF) (PERIMETER STONE INCLUDED) 7035 SYSTEM AREA (ft²) 351 SYSTEM PERIMETER (ft) PROPOSED ELEVATIONS 888.63 MAXIMUM ALLOWABLE GRADE (TOP OF PAVEMENT/UNPAVED) 882.63 MINIMUM ALLOWABLE GRADE (UNPAVED WITH TRAFFIC) 882.13 MINIMUM ALLOWABLE GRADE (UNPAVED NO TRAFFIC) 882.13 MINIMUM ALLOWABLE GRADE (BASE OF FLEXIBLE PAVEMENT) 882.13 MINIMUM ALLOWABLE GRADE (TOP OF RIGID PAVEMENT) 881.13 TOP OF STONE 880.63 TOP OF SC-310 CHAMBER 879.59 8" TOP MANIFOLD INVERT 879.38 12" ISOLATOR ROW CONNECTION INVERT 879.38 12" BOTTOM MANIFOLD INVERT 879.36 10" BOTTOM MANIFOLD INVERT 879.30 BOTTOM OF SC-310 CHAMBER 878.80 UNDERDRAIN INVERT 878.80 BOTTOM OF STONE NOTES ·MANIFOLD SIZE TO BE DETERMINED BY SITE DESIGN ENGINEER. SEE TECH SHEET #7 FOR MANIFOLD SIZING GUIDANCE. ·DUE TO THE ADAPTATION OF THIS CHAMBER SYSTEM TO SPECIFIC SITE AND DESIGN CONSTRAINTS, IT MAY BE NECESSARY TO CUT AND COUPLE ADDITIONAL PIPE TO STANDARD MANIFOLD COMPONENTS IN THE FIELD. ·THE SITE DESIGN ENGINEER MUST REVIEW ELEVATIONS AND IF NECESSARY ADJUST GRADING TO ENSURE THE CHAMBER COVER REQUIREMENTS ARE MET. ·THIS CHAMBER SYSTEM WAS DESIGNED WITHOUT SITE-SPECIFIC INFORMATION ON SOIL CONDITIONS OR BEARING CAPACITY. THE SITE DESIGN ENGINEER IS RESPONSIBLE FOR DETERMINING THE SUITABILITY OF THE SOIL AND PROVIDING THE BEARING CAPACITY OF THE INSITU SOILS. THE BASE STONE DEPTH MAY BE INCREASED OR DECREASED ONCE THIS INFORMATION IS PROVIDED.70 INWOOD ROAD, SUITE 3 | ROCKY HILL | CT | 06067860-529-8188 |888-892-2694 | WWW.STORMTECH.COMDetention Retention Water QualityISOLATOR ROW (SEE DETAIL) INSPECTION PORT PLACE MINIMUM 12.5' OF ADS GEOSYNTHETICS 315WTK WOVEN GEOTEXTILE OVER BEDDING STONE AND UNDERNEATH CHAMBER FEET FOR SCOUR PROTECTION AT ALL CHAMBER INLET ROWS STRUCTURE PER PLAN W/ ELEVATED BYPASS MANIFOLD SHOWN AS 30" NYLOPLAST (24" SUMP MIN) MAXIMUM INLET FLOW 4.6 CFS 8" PREFABRICATED END CAP, PART# SC310EPE10T TYP OF ALL SC-310 8" TOP CONNECTIONS OUTLET CONTROL STRUCTURE PER PLAN MAXIMUM OUTLET FLOW RATE 2.7 CFS (DESIGN BY ENGINEER) 4" ADS N-12 DUAL WALL PERFORATED HDPE UNDERDRAIN (SIZE TBD BY ENGINEER) 12" PREFABRICATED END CAP, PART# SC310EPE12B TYP OF ALL SC-310 12" BOTTOM CONNECTIONS AND ISOLATOR ROWS 12" ADS N-12 CONNECTION INVERT 0.9" ABOVE CHAMBER BASE (SEE NOTES) 8" X 8" ADS N-12 TOP MANIFOLD INVERT 3.5" ABOVE CHAMBER BASE (SEE NOTES) 8" X 8" ADS N-12 TOP MANIFOLD INVERT 3.5" ABOVE CHAMBER BASE (SEE NOTES)43.90'49.40'14.23'63.63'102.83' 3.85'105.35'3.33' 112.02'58.13' SHEET OFDATE:PROJECT #:DRAWN:CHECKED:THIS DRAWING HAS BEEN PREPARED BASED ON INFORMATION PROVIDED TO ADS UNDER THE DIRECTION OF THE SITE DESIGN ENGINEER OR OTHER PROJECT REPRESENTATIVE. THE SITE DESIGN ENGINEER SHALL REVIEW THIS DRAWING PRIOR TO CONSTRUCTION. IT IS THE ULTIMATERESPONSIBILITY OF THE SITE DESIGN ENGINEER TO ENSURE THAT THE PRODUCT(S) DEPICTED AND ALL ASSOCIATED DETAILS MEET ALL APPLICABLE LAWS, REGULATIONS, AND PROJECT REQUIREMENTS.4640 TRUEMAN BLVDHILLIARD, OH 43026ADVANCED DRAINAGE SYSTEMS, INC.R3 610/17/18S105607SVORWDCARMEL, INFREDDY'S FROZEN CUSTARDDATEDRWNCHKDDESCRIPTIONACCEPTABLE FILL MATERIALS: STORMTECH SC-310 CHAMBER SYSTEMS PLEASE NOTE: 1.THE LISTED AASHTO DESIGNATIONS ARE FOR GRADATIONS ONLY. THE STONE MUST ALSO BE CLEAN, CRUSHED, ANGULAR. FOR EXAMPLE, A SPECIFICATION FOR #4 STONE WOULD STATE: "CLEAN, CRUSHED, ANGULAR NO. 4 (AASHTO M43) STONE". 2.STORMTECH COMPACTION REQUIREMENTS ARE MET FOR 'A' LOCATION MATERIALS WHEN PLACED AND COMPACTED IN 6" (150 mm) (MAX) LIFTS USING TWO FULL COVERAGES WITH A VIBRATORY COMPACTOR. 3.WHERE INFILTRATION SURFACES MAY BE COMPROMISED BY COMPACTION, FOR STANDARD DESIGN LOAD CONDITIONS, A FLAT SURFACE MAY BE ACHIEVED BY RAKING OR DRAGGING WITHOUT COMPACTION EQUIPMENT. FOR SPECIAL LOAD DESIGNS, CONTACT STORMTECH FOR COMPACTION REQUIREMENTS. NOTES: 1.SC-310 CHAMBERS SHALL CONFORM TO THE REQUIREMENTS OF ASTM F2418 "STANDARD SPECIFICATION FOR POLYPROPYLENE (PP) CORRUGATED WALL STORMWATER COLLECTION CHAMBERS", OR ASTM F2922 "STANDARD SPECIFICATION FOR POLYETHYLENE (PE) CORRUGATED WALL STORMWATER COLLECTION CHAMBERS". 2.SC-310 CHAMBERS SHALL BE DESIGNED IN ACCORDANCE WITH ASTM F2787 "STANDARD PRACTICE FOR STRUCTURAL DESIGN OF THERMOPLASTIC CORRUGATED WALL STORMWATER COLLECTION CHAMBERS". 3."ACCEPTABLE FILL MATERIALS" TABLE ABOVE PROVIDES MATERIAL LOCATIONS, DESCRIPTIONS, GRADATIONS, AND COMPACTION REQUIREMENTS FOR FOUNDATION, EMBEDMENT, AND FILL MATERIALS. 4.THE SITE DESIGN ENGINEER IS RESPONSIBLE FOR ASSESSING THE BEARING RESISTANCE (ALLOWABLE BEARING CAPACITY) OF THE SUBGRADE SOILS AND THE DEPTH OF FOUNDATION STONE WITH CONSIDERATION FOR THE RANGE OF EXPECTED SOIL MOISTURE CONDITIONS. 5.PERIMETER STONE MUST BE EXTENDED HORIZONTALLY TO THE EXCAVATION WALL FOR BOTH VERTICAL AND SLOPED EXCAVATION WALLS. 6.ONCE LAYER 'C' IS PLACED, ANY SOIL/MATERIAL CAN BE PLACED IN LAYER 'D' UP TO THE FINISHED GRADE. MOST PAVEMENT SUBBASE SOILS CAN BE USED TO REPLACE THE MATERIAL REQUIREMENTS OF LAYER 'C' OR 'D' AT THE SITE DESIGN ENGINEER'S DISCRETION. MATERIAL LOCATION DESCRIPTION AASHTO MATERIAL CLASSIFICATIONS COMPACTION / DENSITY REQUIREMENT D FINAL FILL: FILL MATERIAL FOR LAYER 'D' STARTS FROM THE TOP OF THE 'C' LAYER TO THE BOTTOM OF FLEXIBLE PAVEMENT OR UNPAVED FINISHED GRADE ABOVE. NOTE THAT PAVEMENT SUBBASE MAY BE PART OF THE 'D' LAYER ANY SOIL/ROCK MATERIALS, NATIVE SOILS, OR PER ENGINEER'S PLANS. CHECK PLANS FOR PAVEMENT SUBGRADE REQUIREMENTS. N/A PREPARE PER SITE DESIGN ENGINEER'S PLANS. PAVED INSTALLATIONS MAY HAVE STRINGENT MATERIAL AND PREPARATION REQUIREMENTS. C INITIAL FILL: FILL MATERIAL FOR LAYER 'C' STARTS FROM THE TOP OF THE EMBEDMENT STONE ('B' LAYER) TO 18" (450 mm) ABOVE THE TOP OF THE CHAMBER. NOTE THAT PAVEMENT SUBBASE MAY BE A PART OF THE 'C' LAYER. GRANULAR WELL-GRADED SOIL/AGGREGATE MIXTURES, <35% FINES OR PROCESSED AGGREGATE. MOST PAVEMENT SUBBASE MATERIALS CAN BE USED IN LIEU OF THIS LAYER. AASHTO M145¹ A-1, A-2-4, A-3 OR AASHTO M43¹ 3, 357, 4, 467, 5, 56, 57, 6, 67, 68, 7, 78, 8, 89, 9, 10 BEGIN COMPACTIONS AFTER 12" (300 mm) OF MATERIAL OVER THE CHAMBERS IS REACHED. COMPACT ADDITIONAL LAYERS IN 6" (150 mm) MAX LIFTS TO A MIN. 95% PROCTOR DENSITY FOR WELL GRADED MATERIAL AND 95% RELATIVE DENSITY FOR PROCESSED AGGREGATE MATERIALS. ROLLER GROSS VEHICLE WEIGHT NOT TO EXCEED 12,000 lbs (53 kN). DYNAMIC FORCE NOT TO EXCEED 20,000 lbs (89 kN). B EMBEDMENT STONE: FILL SURROUNDING THE CHAMBERS FROM THE FOUNDATION STONE ('A' LAYER) TO THE 'C' LAYER ABOVE. CLEAN, CRUSHED, ANGULAR STONE AASHTO M43¹ 3, 357, 4, 467, 5, 56, 57 NO COMPACTION REQUIRED. A FOUNDATION STONE: FILL BELOW CHAMBERS FROM THE SUBGRADE UP TO THE FOOT (BOTTOM) OF THE CHAMBER. CLEAN, CRUSHED, ANGULAR STONE AASHTO M43¹ 3, 357, 4, 467, 5, 56, 57 PLATE COMPACT OR ROLL TO ACHIEVE A FLAT SURFACE.2,3 D C B A 18" (450 mm) MIN* 8' (2.4 m) MAX 6" (150 mm) MIN 12" (300 mm) MIN 12" (300 mm) MIN34" (864 mm)6" (150 mm) MIN ADS GEOSYNTHETICS 601T NON-WOVEN GEOTEXTILE ALL AROUND CLEAN CRUSHED, ANGULAR STONE IN A & B LAYERS *TO BOTTOM OF FLEXIBLE PAVEMENT. FOR UNPAVED INSTALLATIONS WHERE RUTTING FROM VEHICLES MAY OCCUR, INCREASE COVER TO 24" (600 mm). PERIMETER STONE (SEE NOTE 5) EXCAVATION WALL (CAN BE SLOPED OR VERTICAL) SC-310 END CAP SUBGRADE SOILS (SEE NOTE 4) PAVEMENT LAYER (DESIGNED BY SITE DESIGN ENGINEER) DEPTH OF STONE TO BE DETERMINED BY SITE DESIGN ENGINEER 6" (150 mm) MIN 16" (406 mm)70 INWOOD ROAD, SUITE 3 | ROCKY HILL | CT | 06067860-529-8188 |888-892-2694 | WWW.STORMTECH.COMDetention Retention Water Quality SHEET OFDATE:PROJECT #:DRAWN:CHECKED:THIS DRAWING HAS BEEN PREPARED BASED ON INFORMATION PROVIDED TO ADS UNDER THE DIRECTION OF THE SITE DESIGN ENGINEER OR OTHER PROJECT REPRESENTATIVE. THE SITE DESIGN ENGINEER SHALL REVIEW THIS DRAWING PRIOR TO CONSTRUCTION. IT IS THE ULTIMATERESPONSIBILITY OF THE SITE DESIGN ENGINEER TO ENSURE THAT THE PRODUCT(S) DEPICTED AND ALL ASSOCIATED DETAILS MEET ALL APPLICABLE LAWS, REGULATIONS, AND PROJECT REQUIREMENTS.4640 TRUEMAN BLVDHILLIARD, OH 43026ADVANCED DRAINAGE SYSTEMS, INC.R4 610/17/18S105607SVORWDCARMEL, INFREDDY'S FROZEN CUSTARDDATEDRWNCHKDDESCRIPTIONINSPECTION & MAINTENANCE STEP 1)INSPECT ISOLATOR ROW FOR SEDIMENT A.INSPECTION PORTS (IF PRESENT) A.1.REMOVE/OPEN LID ON NYLOPLAST INLINE DRAIN A.2.REMOVE AND CLEAN FLEXSTORM FILTER IF INSTALLED A.3.USING A FLASHLIGHT AND STADIA ROD, MEASURE DEPTH OF SEDIMENT AND RECORD ON MAINTENANCE LOG A.4.LOWER A CAMERA INTO ISOLATOR ROW FOR VISUAL INSPECTION OF SEDIMENT LEVELS (OPTIONAL) A.5.IF SEDIMENT IS AT, OR ABOVE, 3" (80 mm) PROCEED TO STEP 2. IF NOT, PROCEED TO STEP 3. B.ALL ISOLATOR ROWS B.1.REMOVE COVER FROM STRUCTURE AT UPSTREAM END OF ISOLATOR ROW B.2.USING A FLASHLIGHT, INSPECT DOWN THE ISOLATOR ROW THROUGH OUTLET PIPE i)MIRRORS ON POLES OR CAMERAS MAY BE USED TO AVOID A CONFINED SPACE ENTRY ii)FOLLOW OSHA REGULATIONS FOR CONFINED SPACE ENTRY IF ENTERING MANHOLE B.3.IF SEDIMENT IS AT, OR ABOVE, 3" (80 mm) PROCEED TO STEP 2. IF NOT, PROCEED TO STEP 3. STEP 2)CLEAN OUT ISOLATOR ROW USING THE JETVAC PROCESS A.A FIXED CULVERT CLEANING NOZZLE WITH REAR FACING SPREAD OF 45" (1.1 m) OR MORE IS PREFERRED B.APPLY MULTIPLE PASSES OF JETVAC UNTIL BACKFLUSH WATER IS CLEAN C.VACUUM STRUCTURE SUMP AS REQUIRED STEP 3)REPLACE ALL COVERS, GRATES, FILTERS, AND LIDS; RECORD OBSERVATIONS AND ACTIONS. STEP 4)INSPECT AND CLEAN BASINS AND MANHOLES UPSTREAM OF THE STORMTECH SYSTEM. NOTES 1.INSPECT EVERY 6 MONTHS DURING THE FIRST YEAR OF OPERATION. ADJUST THE INSPECTION INTERVAL BASED ON PREVIOUS OBSERVATIONS OF SEDIMENT ACCUMULATION AND HIGH WATER ELEVATIONS. 2.CONDUCT JETTING AND VACTORING ANNUALLY OR WHEN INSPECTION SHOWS THAT MAINTENANCE IS NECESSARY. SUMP DEPTH TBD BY SITE DESIGN ENGINEER (24" [600 mm] MIN RECOMMENDED) CATCH BASIN OR MANHOLE SC-310 ISOLATOR ROW DETAIL NTS OPTIONAL INSPECTION PORT SC-310 END CAP COVER ENTIRE ISOLATOR ROW WITH ADS GEOSYNTHETICS 601T NON-WOVEN GEOTEXTILE 5' (1.5 m) MIN WIDE SC-310 CHAMBERSTORMTECH HIGHLY RECOMMENDS FLEXSTORM PURE INSERTS IN ANY UPSTREAM STRUCTURES WITH OPEN GRATES 12" (300 mm) HDPE ACCESS PIPE REQUIRED USE FACTORY PRE-FABRICATED END CAP PART #: SC310EPE12B TWO LAYERS OF ADS GEOSYNTHETICS 315WTK WOVEN GEOTEXTILE BETWEEN FOUNDATION STONE AND CHAMBERS 4' (1.2 m) MIN WIDE CONTINUOUS FABRIC WITHOUT SEAMS ELEVATED BYPASS MANIFOLD SC-310 6" (150 mm) INSPECTION PORT DETAIL NTS 18" (450 mm) MIN WIDTH CONCRETE SLAB 8" (200 mm) MIN THICKNESS * THE PART# 2712AG6IPKIT CAN BE USED TO ORDER ALL NECESSARY COMPONENTS FOR A SOLID LID INSPECTION PORT INSTALLATION 6" (150 mm) INSERTA TEE PART# 6P26FBSTIP* INSERTA TEE TO BE CENTERED ON CORRUGATION CREST FLEXSTORM CATCH IT PART# 6212NYFX WITH USE OF OPEN GRATE PAVEMENT CONCRETE COLLAR CONCRETE COLLAR NOT REQUIRED FOR UNPAVED APPLICATION 12" (300 mm) NYLOPLAST INLINE DRAIN BODY W/SOLID HINGED COVER OR GRATE PART# 2712AG6IP* SOLID COVER: 1299CGC* GRATE: 1299CGS 6" (150 mm) SDR35 PIPE SC-310 CHAMBER 70 INWOOD ROAD, SUITE 3 | ROCKY HILL | CT | 06067860-529-8188 |888-892-2694 | WWW.STORMTECH.COMDetention Retention Water Quality SHEET OFDATE:PROJECT #:DRAWN:CHECKED:THIS DRAWING HAS BEEN PREPARED BASED ON INFORMATION PROVIDED TO ADS UNDER THE DIRECTION OF THE SITE DESIGN ENGINEER OR OTHER PROJECT REPRESENTATIVE. THE SITE DESIGN ENGINEER SHALL REVIEW THIS DRAWING PRIOR TO CONSTRUCTION. IT IS THE ULTIMATERESPONSIBILITY OF THE SITE DESIGN ENGINEER TO ENSURE THAT THE PRODUCT(S) DEPICTED AND ALL ASSOCIATED DETAILS MEET ALL APPLICABLE LAWS, REGULATIONS, AND PROJECT REQUIREMENTS.4640 TRUEMAN BLVDHILLIARD, OH 43026ADVANCED DRAINAGE SYSTEMS, INC.R5 610/17/18S105607SVORWDCARMEL, INFREDDY'S FROZEN CUSTARDDATEDRWNCHKDDESCRIPTION70 INWOOD ROAD, SUITE 3 | ROCKY HILL | CT | 06067860-529-8188 |888-892-2694 | WWW.STORMTECH.COMDetention Retention Water QualityPART #STUB A B C SC310EPE06T / SC310EPE06TPC 6" (150 mm)9.6" (244 mm)5.8" (147 mm)--- SC310EPE06B / SC310EPE06BPC ---0.5" (13 mm) SC310EPE08T / SC310EPE08TPC 8" (200 mm)11.9" (302 mm)3.5" (89 mm)--- SC310EPE08B / SC310EPE08BPC ---0.6" (15 mm) SC310EPE10T / SC310EPE10TPC 10" (250 mm)12.7" (323 mm)1.4" (36 mm)--- SC310EPE10B / SC310EPE10BPC ---0.7" (18 mm) SC310EPE12B 12" (300 mm)13.5" (343 mm)---0.9" (23 mm) ALL STUBS, EXCEPT FOR THE SC310EPE12B ARE PLACED AT BOTTOM OF END CAP SUCH THAT THE OUTSIDE DIAMETER OF THE STUB IS FLUSH WITH THE BOTTOM OF THE END CAP. FOR ADDITIONAL INFORMATION CONTACT STORMTECH AT 1-888-892-2694. * FOR THE SC310EPE12B THE 12" (300 mm) STUB LIES BELOW THE BOTTOM OF THE END CAP APPROXIMATELY 0.25" (6 mm). BACKFILL MATERIAL SHOULD BE REMOVED FROM BELOW THE N-12 STUB SO THAT THE FITTING SITS LEVEL. NOTE: ALL DIMENSIONS ARE NOMINAL NOMINAL CHAMBER SPECIFICATIONS SIZE (W X H X INSTALLED LENGTH)34.0" X 16.0" X 85.4" (864 mm X 406 mm X 2169 mm) CHAMBER STORAGE 14.7 CUBIC FEET (0.42 m³) MINIMUM INSTALLED STORAGE*31.0 CUBIC FEET (0.88 m³) WEIGHT 35.0 lbs.(16.8 kg) *ASSUMES 6" (152 mm) ABOVE, BELOW, AND BETWEEN CHAMBERS PRE-FAB STUBS AT BOTTOM OF END CAP FOR PART NUMBERS ENDING WITH "B" PRE-FAB STUBS AT TOP OF END CAP FOR PART NUMBERS ENDING WITH "T" PRE CORED END CAPS END WITH "PC" 34.0" (864 mm) 16.0" (406 mm) 90.7" (2304 mm) ACTUAL LENGTH 85.4" (2169 mm) INSTALLED LENGTH BUILD ROW IN THIS DIRECTION A A B C SC-310 TECHNICAL SPECIFICATION NTS 9.9" (251 mm) 15.6" (396 mm) OVERLAP NEXT CHAMBER HERE (OVER SMALL CORRUGATION) START END UNDERDRAIN DETAIL NTS A A B B SECTION A-A SECTION B-B NUMBER AND SIZE OF UNDERDRAINS PER SITE DESIGN ENGINEER 4" (100 mm) TYP FOR SC-310 & SC-160LP SYSTEMS 6" (150 mm) TYP FOR SC-740, DC-780, MC-3500 & MC-4500 SYSTEMS OUTLET MANIFOLD STORMTECH END CAP STORMTECH CHAMBERS STORMTECH CHAMBER STORMTECH END CAP DUAL WALL PERFORATED HDPE UNDERDRAIN ADS GEOSYNTHETICS 601T NON-WOVEN GEOTEXTILE ADS GEOSYNTHETICS 601T NON-WOVEN GEOTEXTILE FOUNDATION STONE BENEATH CHAMBERS FOUNDATION STONE BENEATH CHAMBERS SHEET OFDATE:PROJECT #:DRAWN:CHECKED:THIS DRAWING HAS BEEN PREPARED BASED ON INFORMATION PROVIDED TO ADS UNDER THE DIRECTION OF THE SITE DESIGN ENGINEER OR OTHER PROJECT REPRESENTATIVE. THE SITE DESIGN ENGINEER SHALL REVIEW THIS DRAWING PRIOR TO CONSTRUCTION. IT IS THE ULTIMATERESPONSIBILITY OF THE SITE DESIGN ENGINEER TO ENSURE THAT THE PRODUCT(S) DEPICTED AND ALL ASSOCIATED DETAILS MEET ALL APPLICABLE LAWS, REGULATIONS, AND PROJECT REQUIREMENTS.4640 TRUEMAN BLVDHILLIARD, OH 43026ADVANCED DRAINAGE SYSTEMS, INC.R6 610/17/18S105607SVORWDCARMEL, INFREDDY'S FROZEN CUSTARDDATEDRWNCHKDDESCRIPTIONTRAFFIC LOADS: CONCRETE DIMENSIONS ARE FOR GUIDELINE PUPOSES ONLY. ACTUAL CONCRETE SLAB MUST BE DESIGNED GIVING CONSIDERATION FOR LOCAL SOIL CONDITIONS, TRAFFIC LOADING & OTHER APPLICABLE DESIGN FACTORS ADAPTER ANGLES VARIABLE 0°- 360° ACCORDING TO PLANS A 18" (457 mm) MIN WIDTH AASHTO H-20 CONCRETE SLAB 8" (203 mm) MIN THICKNESS VARIABLE SUMP DEPTH ACCORDING TO PLANS [6" (152 mm) MIN ON 8-24" (200-600 mm), 10" (254 mm) MIN ON 30" (750 mm)] 4" (102 mm) MIN ON 8-24" (200-600 mm) 6" (152 mm) MIN ON 30" (750 mm) 12" (610 mm) MIN (FOR AASHTO H-20) INVERT ACCORDING TO PLANS/TAKE OFF BACKFILL MATERIAL BELOW AND TO SIDES OF STRUCTURE SHALL BE ASTM D2321 CLASS I OR II CRUSHED STONE OR GRAVEL AND BE PLACED UNIFORMLY IN 12" (305 mm) LIFTS AND COMPACTED TO MIN OF 90% INTEGRATED DUCTILE IRON FRAME & GRATE/SOLID TO MATCH BASIN O.D. NYLOPLAST DRAIN BASIN NTS NOTES 1.8-30" (200-750 mm) GRATES/SOLID COVERS SHALL BE DUCTILE IRON PER ASTM A536 GRADE 70-50-05 2.12-30" (300-750 mm) FRAMES SHALL BE DUCTILE IRON PER ASTM A536 GRADE 70-50-05 3.DRAIN BASIN TO BE CUSTOM MANUFACTURED ACCORDING TO PLAN DETAILS 4.DRAINAGE CONNECTION STUB JOINT TIGHTNESS SHALL CONFORM TO ASTM D3212 FOR CORRUGATED HDPE (ADS & HANCOR DUAL WALL) & SDR 35 PVC 5.FOR COMPLETE DESIGN AND PRODUCT INFORMATION: WWW.NYLOPLAST-US.COM 6.TO ORDER CALL: 800-821-6710 A PART #GRATE/SOLID COVER OPTIONS 8" (200 mm)2808AG PEDESTRIAN LIGHT DUTY STANDARD LIGHT DUTY SOLID LIGHT DUTY 10" (250 mm)2810AG PEDESTRIAN LIGHT DUTY STANDARD LIGHT DUTY SOLID LIGHT DUTY 12" (300 mm)2812AG PEDESTRIAN AASHTO H-10 STANDARD AASHTO H-20 SOLID AASHTO H-20 15" (375 mm)2815AG PEDESTRIAN AASHTO H-10 STANDARD AASHTO H-20 SOLID AASHTO H-20 18" (450 mm)2818AG PEDESTRIAN AASHTO H-10 STANDARD AASHTO H-20 SOLID AASHTO H-20 24" (600 mm)2824AG PEDESTRIAN AASHTO H-10 STANDARD AASHTO H-20 SOLID AASHTO H-20 30" (750 mm)2830AG PEDESTRIAN AASHTO H-20 STANDARD AASHTO H-20 SOLID AASHTO H-20 VARIOUS TYPES OF INLET AND OUTLET ADAPTERS AVAILABLE: 4-30" (100-750 mm) FOR CORRUGATED HDPE WATERTIGHT JOINT (CORRUGATED HDPE SHOWN)3130 VERONA AVEBUFORD, GA 30518PHN (770) 932-2443FAX (770) 932-2490www.nyloplast-us.com® D. Stormwater Quality Data 06/28/07 Exhibit 701-1: Curve Number Calculation for Water Quality Storm Event Water Quality Curve Number7072747678808284868890929496981000 102030405060708090100Percent ImperviousnessWater Quality Curve Number (CNwq) BMP DESIGN FLOW RATE Basin Name: BMP Group Name: POST Simulation: 24HR Node Name: BMP Basin Type: SCS Unit Hydrograph Unit Hydrograph: Uh484 Peaking Fator: 484.0 Spec Time Inc (min): 2.27 Comp Time Inc (min): 2.27 Rainfall File: Scsii-24 Rainfall Amount (in): 1.000 Storm Duration (hrs): 24.00 Status: Onsite Time of Conc (min): 17.00 Time Shift (hrs): 0.00 Area (ac): 1.380 Vol of Unit Hyd (in): 1.001 Curve Number: 96.200 DCIA (%): 0.000 Time Max (hrs): 12.09 Flow Max (cfs): 1.00 Runoff Volume (in): 0.644 Runoff Volume (ft3): 3224 Diversion Structure Design - Structure #103 Pipe Diameter From BMP - 103 =12 inches Cross Sectional Area "A" =0.79 ft^2 Overflow Weir Height (Structure 103) =879.72 ft Stormwater Quality Peak Treatment Flow Rate =1.00 cfs Pipe 104 to 103 C A L C U L A T E D D E S I G N "Q" =PIPE (full) n =0.013 Pipe Pipe Max Q Max V MANHOLE CIA size slope vel.length slope full full INV out INV in T.C.=882.93 1.00 18 0.01 0.57 8 0.180 4.46 2.52 879.43 879.42 Area of Pipe Used by Stormwater Quality Peak Treatment Flow Rate =0.224 ft^2 Min. Depth of Flow in Pipe for Stormwater Quality Peak Treatment Flow Rate =0.30 ft Min. Structure 101 Weir Wall Elevation =879.73 ft **SET STRUCTURE 103 WEIR WALL ELEVATION = 879.8' Max Flow Capacity of Pipe Flowing Full (A = 1.23 ft^2) "Qfull" =4.46 cfs Required Treatment Flow Capacity of Pipe "Q" =1.00 cfs Q / Qfull =0.22 this is a ratio A = (Q / Qfull) x Afull =0.176 ft^2 A = [r^2(Φ-sinΦ)] / 2 Solve for Φ =126.22 degrees Φ = 2 { arcoss[ (r-d) / r ] } Solve for "d" =0.30 feet City of Indianapolis Stormwater Quality Unit (SQU) Selection Guide Pg. 1 1/23/18 Version 12.1 (Check http://www.indy.gov/eGov/City/DPW/Business/Specs/Pages/UpdatedStormWaterManual.aspx for current Selection Guide) Table 1 Rate Based SQUs Performance Matrix for Manufactured SQUs that remove 80% or more of Test Particles PLEASE NOTE: All SQUs shall be configured as off-line units unless approved for on-line use. On-line units must document the peak 10-year flow (per the Stormwater Design and Construction Specification Manual) is less than the approved maximum10-yr flow rate. Table 1 Manufactured SQU SQU System Model Max Treatment Flow (cfs) Max 10-yr On-Line Flow Rate (cfs) STC 450 0.37 N/A STC 900 0.83 N/A STC1200 0.83 N/A STC 1800 0.83 N/A STC 2400 1.38 N/A STC 3600 1.38 N/A STC 4800 2.30 N/A STC 6000 2.30 N/A STC 7200 3.22 N/A STC 11000 4.59 N/A STC 13000 4.59 N/A Stormceptor® 2,3 STC 16000 6.43 N/A 4 Foot Diameter 1.3 N/A 6 Foot Diameter 3.58 N/A 8 Foot Diameter 7.35 N/A Downstream Defender® 2 10 Foot Diameter 12.85 N/A VS30 0.28 N/A VS40 0.58 N/A VS50 1.01 N/A VS60 1.60 N/A VS70 2.35 N/A VortSentry®2,3 VS80 3.28 N/A 1000 0.49 N/A 2000 1.00 N/A 3000 1.75 N/A 4000 2.76 N/A Vortechs®2,3 5000 4.05 N/A BMP ICPR INPUT DATA ========================================================================================== ==== Basins ============================================================================== ========================================================================================== Name: BMP Node: BMP Status: Onsite Group: POST Type: SCS Unit Hydrograph CN Unit Hydrograph: Uh484 Peaking Factor: 484.0 Rainfall File: Storm Duration(hrs): 0.00 Rainfall Amount(in): 0.000 Time of Conc(min): 17.00 Area(ac): 1.380 Time Shift(hrs): 0.00 Curve Number: 96.20 Max Allowable Q(cfs): 999999.000 DCIA(%): 0.00 ========================================================================================== ==== Nodes =============================================================================== ========================================================================================== Name: BOUNDARY Base Flow(cfs): 0.000 Init Stage(ft): 100.000 Group: POST Warn Stage(ft): 100.000 Type: Time/Stage Time(hrs) Stage(ft) --------------- --------------- 0.00 100.000 12.00 100.000 24.00 100.000 ========================================================================================== ==== Hydrology Simulations =============================================================== ========================================================================================== Name: 24HR Filename: P:\WAX.001 - Freddys Custard - Winter Architects\Drainage\ICPR\BMP\24HR.R32 Override Defaults: Yes Storm Duration(hrs): 24.00 Rainfall File: Scsii-24 Rainfall Amount(in): 1.00 Time(hrs) Print Inc(min) --------------- --------------- 30.000 5.00 ========================================================================================== ==== Routing Simulations ================================================================= ========================================================================================== Name: WAT-QUAL Hydrology Sim: 24HR Filename: P:\WAX.001 - Freddys Custard - Winter Architects\Drainage\ICPR\BMP\WAT-QUAL.I32 Execute: Yes Restart: No Patch: No Alternative: No Max Delta Z(ft): 1.00 Delta Z Factor: 0.00500 Time Step Optimizer: 10.000 Start Time(hrs): 0.000 End Time(hrs): 25.00 Min Calc Time(sec): 0.5000 Max Calc Time(sec): 60.0000 Boundary Stages: Boundary Flows: Time(hrs) Print Inc(min) --------------- --------------- 999.000 15.000 Group Run --------------- ----- POST Yes E. Maintenance Guidelines Included Reference Documents Downstream Defender® - Operation & Maintenance Manual Downstream Defender® - Advanced Vortex Separator Downstream Defender® - Handling & Installation Instructions Downstream Defender® - Pipe Connections & Couplings StormTech® - Standard Documents Operation and Maintenance Manual Downstream Defender Stormwater Treatment System ® DOWNSTREAM DEFENDER® OPERATION AND MAINTENANCE MANUAL Table of Contents 3 Downstream Defender by Hydro International - Benefits of the Downstream Defender - Applications - Downstream Defender Components 4 Operation - Introduction - Pollutant Capture and Retention - Wet Sump - Blockage Protection 4 Maintenance - Overview - DeterminingYou Maintenance Schedule 5 Maintenance Procedures - Inspection - Floatables and Sediment Cleanout 8 Downstream Defender Installation Log 9 Downstream Defender Inspection and Maintenance Log COPYRIGHT STATEMENT: The contents of this manual, including the drawings and specifications contained herein or annexed hereto, are intended for the use of the recipient to whom the document and all associated information are directed. Hydro International plc owns the copyright of this document (including any drawings or graphics), which is supplied in confidence. It must not be used for any purpose other than that for which it is supplied and must not be reproduced, in whole or in part stored in a retrieval system or transmitted in any form or by any means without prior permission in writing from Hydro International plc. Downstream Defender is a trademarked hydrodynamic vortex separation device of Hydro International plc. A patent covering the Downstream Defender has been granted. DISCLAIMER: Information and data contained in this manual is exclusively for the purpose of assisting in the operation and maintenance of Hydro International plc’s Downstream Defender. No warranty is given nor can liability be accepted for use of this information for any other purpose. Hydro International plc have a policy of continuous product development and reserve the right to amend specifications without notice. 2 DOWNSTREAM DEFENDER® OPERATION AND MAINTENANCE MANUAL The Downstream Defender is an advanced Hydrodynamic Vortex Separator designed to provide high removal efficiencies of settleable solids and their associated pollutants, oil, and floatables over a wide range of flow rates. The Downstream Defender has unique, flow-modifying internal components developed from extensive full-scale testing, CFD modeling and over thirty years of hydrodynamic separation experience in wastewater, combined sewer and stormwater applications. These internal components distinguish the Downstream Defender from simple swirl-type devices and conventional oil/grit separators by minimizing turbulence and headlosses, enhancing separation, and preventing washout of previously stored pollutants. The high removal efficiencies and inherent low headlosses of the Downstream Defender allow for a small footprint making it a compact and economical solution for the treatment of non-point source pollution. BENEFITS OF THE DOWNSTREAM DEFENDER • Removes sediment, floatables, oil and grease •No pollutant washouts •Small footprint •No loss of treatment capacity between clean-outs •Low headloss •Efficient over a wide ranges of flows •Easy to install •Low maintenance APPLICATIONS •New developments and retrofits •Utility yards •Streets and roadways •Parking lots •Pre-treatment for filters, infiltration and storage •Industrial and commercial facilities •Wetlands protection Downstream Defender® by Hydro International 3 DOWNSTREAM DEFENDER COMPONENTS 1. Central Access Port 2. Floatables Access Port (6-ft., 8-ft. and 10-ft. models only) 3. Dip Plate 4. Tangential Inlet 5. Center Shaft 6. Center Cone 7. Benching Skirt 8. Floatables Lid 9. Outlet Pipe 10. Floatables Storage 11. Isolated Sediment Storage Zone 1 4 6 7 2 3 5 11 98 10 DOWNSTREAM DEFENDER® OPERATION AND MAINTENANCE MANUAL Operation INTRODUCTION The Downstream Defender operates on simple fl uid hydraulics. It is self-activating, has no moving parts, no external power requirement and is fabricated with durable non-corrosive components. No manual procedures are required to operate the unit and maintenance is limited to monitoring accumulations of stored pollutants and periodic clean-outs. The Downstream Defender has been designed to allow for easy and safe access for inspection/monitoring and clean-out procedures. Entry into the unit or removal of the internal components is not necessary for maintenance, thus safety concerns related to confi ned-space-entry are avoided. POLLUTANT CAPTURE AND RETENTION The internal components of the Downstream Defender have been designed to protect the oil, fl oatables and sediment storage volumes so that separator performance is not reduced as pollutants accumulate between clean-outs. Additionally, the Downstream Defender is designed and installed into the storm drain system so that the vessel remains wet between storm events. Oil and fl oatables are stored on the water surface in the outer annulus separate from the sediment storage volume in the sump of the unit providing the option for separate oil disposal, and accessories such as adsorbant pads. Since the oil/fl oatables and sediment storage volumes are isolated from the active separation region, the potential for re-suspension and washout of stored pollutants between clean-outs is minimized. WET SUMP The sump of the Downstream Defender retains a standing water level between storm events. The water in the sump prevents stored sediment from solidifying in the base of the unit. The clean-out procedure becomes more diffi cult and labor intensive if the system allows fi ne sediment to dry-out and consolidate. Dried sediment must be manually removed by maintenance crews. This is a labor intensive operation in a hazardous environment. BLOCKAGE PROTECTION The Downstream Defender has large clear openings and no internal restrictions or weirs, minimizing the risk of blockage and hydraulic losses. In addition to increasing the system headloss, orifi ces and internal weirs can increase the risk of blockage within the unit. Maintenance OVERVIEW The Downstream Defender protects the environment by removing a wide range of pollutants from stormwater runoff. Periodic removal of these captured pollutants is essential to the continuous, long- term functioning of the Downstream Defender. The Downstream Defender will capture and retain sediment and oil until the sediment and oil storage volumes are full to capacity. When sediment and oil storage capacities are reached, the Downstream Defender will no longer be able to store removed sediment and oil. Maximum pollutant storage capacities are provided in Table 1. Figure 1:Pollutant storage volumes of the Downswtream Defender 4 Oil Max Oil Storage Depth Isolated Sediment Storage Sediment DOWNSTREAM DEFENDER® OPERATION AND MAINTENANCE MANUAL The Downstream Defender allows for easy and safe inspection, monitoring and clean-out procedures. A commercially or municipally owned sump-vac is used to remove captured sediment and floatables. Access ports are located in the top of the manhole. On the 6-ft, 8-ft and 10-ft units, the floatables access port is above the outlet pipe between the concrete manhole wall and the dip plate. The sediment removal access ports for all Downstream Defender models are located directly over the hollow center shaft. Maintenance events may include Inspection, Oil & Floatables Removal, and Sediment Removal. Maintenance events do not require entry into the Downstream Defender, nor do they require the internal components of the Downstream Defender to be removed. In the case of inspection and floatables removal, a vactor truck is not required. However, a vactor truck is required if the maintenance event is to include oil removal and/or sediment removal. DETERMINING YOUR MAINTENANCE SCHEDULE The frequency of cleanout is determined in the field after installation. During the first year of operation, the unit should be inspected every six months to determine the rate of sediment and floatables accumulation. A simple probe such as a Sludge Judge® can be used to determine the level of accumulated solids stored in the sump. This information can be recorded in the maintenance log (see page 9) to establish a routine maintenance schedule. The vactor procedure, including both sediment and oil/flotables removal, for a 6-ft Downstream Defender typically takes less than 30 minutes and removes a combined water/oil volume of about 500 gallons. INSPECTION PROCEDURES Inspection is a simple process that does not involve entry into the Downstream Defender. Maintenance crews should be familiar with the Downstream Defender and its components prior to inspection. SCHEDULING • It is important to inspect your Downstream Defender every six months during the first year of operation to determine your site- specific rate of pollutant accumulation. • Typically, inspection may be conducted during any season of the year RECOMMENDED EQUIPMENT • Safety Equipment and Personal Protective Equipment (traffic cones, work gloves, etc.) • Crow bar or other tool to remove grate or lid • Pole with skimmer or net • Sediment probe (such as a Sludge Judge®) • Trash bag for removed floatables • Downstream Defender Maintenance Log 5 Downstream Defender Pollutant Storage Capacities and Max. Cleanout Depths Unit Diameter Total Oil Storage Oil Clean-out Depth Total Sediment Storage Sediment Clean-out Depth Max. Liquid Volume Removed (feet)(gal.)(inches)(gal.)(inches)(gal.) 4 6 8 10 70 230 525 1050 <16 <23 <33 <42 141 424 939 1,757 <18 <24 <30 <36 384 1239 2884 5546 NOTES 1. Refer to Dowmstream Defender Clean-out Detail (Fig. 1) for measurement of depths. 2. Oil accumulation is typically less than sediment, however, removal of oil and sediment during the same service is recommended. 3. Remove floatables first, then remove sediment storage volume. Table 1 DOWNSTREAM DEFENDER® OPERATION AND MAINTENANCE MANUAL INSPECTION PROCEDURES 1. Set up any necessary safety equipment around the access port or grate of the Downstream Defender as stipulated by local ordinances. Safety equipment should notify passing pedestrian and road traffic that work is being done. 2. Remove the lids to the manhole. Figure 4. (NOTE: The 4-ft Downstream Defender® will only have one lid). 3. Without entering the vessel, look down into the chamber to inspect the inside. Make note of any irregularities. See Figure 7 and 8 for typical inspection views. 4.Without entering the vessel, use the pole with the skimmer net to remove floatables and loose debris from the outer annulus of the chamber. 5.Using a sediment probe such as a Sludge Judge®, measure the depth of sediment that has collected in the sump of the vessel. Figure 5. 6.On the Maintenance Log (see page 9), record the date, unit location, estimated volume of floatables and gross debris removed, and the depth of sediment measured. Also note any apparent irregularities such as damaged components or blockages. 7.Securely replace the grate or lid. 8.Take down safety equipment. 9.Notify Hydro International of any irregularities noted during inspection. FLOATABLES AND SEDIMENT CLEANOUT Floatables cleanout is typically done in conjunction with sediment removal. A commercially or municipally owned sump-vac is used to remove captured sediment and floatables. Figure 6. Floatables and loose debris can also be netted with a skimmer and pole. The access port located at the top of the manhole provides unobstructed access for a vactor hose and skimmer pole to be lowered to the base of the sump. SCHEDULING •Floatables and sump cleanout are typically conducted once a year during any season. •Floatables and sump cleanout should occur as soon as possible following a spill in the contributing drainage area Figure 7:View over Center Shaft into sediment storage Zone 6 Figure 8:View of outer annulus of floatables and oil collection zone Figure 4 Figure 5 Figure 6 DOWNSTREAM DEFENDER® OPERATION AND MAINTENANCE MANUAL RECOMMENDED EQUIPMENT •Safety Equipment (traffic cones, etc) •Crow bar or other tool to remove grate or lid •Pole with skimmer or net (if only floatables are being removed) •Sediment probe (such as a Sludge Judge®) •Vactor truck (flexible hose recommended) •Downstream Defender Maintenance Log FLOATABLES AND SEDIMENT CLEAN OUT PROCEDURES 1. Set up any necessary safety equipment around the access port or grate of the Downstream Defender as stipulated by local ordinances. Safety equipment should notify passing pedestrian and road traffic that work is being done. 2.Remove the lids to the manhole (NOTE: The 4-ft Downstream Defender® will only have one lid). 3.Without entering the vessel, look down into the chamber to inspect the inside. Make note of any irregularities. 4. Using the Floatables Port for access, remove oil and floatables stored on the surface of the water with the vactor hose or the skimmer net. Figure 9. 5.Using a sediment probe such as a Sludge Judge®, measure the depth of sediment that has collected in the sump of the vessel and record it in the Maintenance Log (page 9). 6.Once all floatables have been removed, drop the vactor hose to the base of the sump via the Central Access Port. Vactor out the sediment and gross debris off the sump floor. Figure 6. 7.Retract the vactor hose from the vessel. 8.On the Maintenance Log provided by Hydro International, record the date, unit location, estimated volume of floatables and gross debris removed, and the depth of sediment measured. Also note any apparent irregularities such as damaged components or blockages. 9.Securely replace the grate or lid. Figure 9:Floatables and sediment are removed with a vactor hose 7 - Regularly during first year of installation - Every 6 months after the first year of installation - Once per year, with sediment removal - Following a spill in the drainage area - Once per year or as needed - Following a spill in the drainage area ACTIVITY FREQUENCY Inspection Oil and Floatables Removal Sediment Removal Maintenance at a Glance NOTE: For most cleanouts it is not necessary to remove the entire volume of liquid in the vessel. Only removing the first few inches of oils/floatables and the sediment storage volume is required. Downstream Defender Installation Log HYDRO INTERNATIONAL REFERENCE NUMBER: SITE NAME: SITE LOCATION: OWNER: CONTRACTOR: CONTACT NAME: CONTACT NAME: COMPANY NAME: COMPANY NAME: ADDRESS: ADDRESS: TELEPHONE: TELEPHONE: FAX: FAX: INSTALLATION DATE: / / MODEL (CIRCLE ONE): 4-FT 6-FT 8-FT 10-FT CUSTOM Ph: 207.756.6200 • Fax: 207.756.6212 • Email: hiltech@hil-tech.com www.hydro-international.biz stormwater turning water around...® Downstream Defender ® Proven to be more effi cient for removing pollutants and preventing washout ADVANTAGES • Most effi cient separator available • Smaller footprint • Lower capital cost than other devices • Proven to prevent washout • Verifi ed through nationally recognized programs • Low system headloss APPLICATIONS • Control of sediment, fl oatable trash and petroleum products • New developments • Redevelopment projects • Streets, roadways and parking lots • Pretreatment for fi lters, infi ltration or storage HOW IT WORKS The Downstream Defender has internal components designed to advance vortex separation by minimizing turbulence and headloss, increasing effi ciency and preventing washout of stored pollutants. Stormwater is introduced tangentially into the side of the vessel, generating a rotating fl ow that spirals around the outside of the dip plate (red arrow). Oils, trash and fl oatable debris rise to the water surface and are trapped in the oil and fl oatables storage volume (yellow zone). As fl ow continues to spiral down around the dip plate cylinder, low energy vortex motion directs sediment inward along the benching skirt and into the protected sediment storage zone (brown zone). The benching skirt and center cone redirect the rotating fl ow up and inward between the center shaft and dip plate cylinder away from the stored sediment. The outlet pipe discharges treated effl uent from within the dip plate cylinder ensuring the longest possible residence time (blue arrow). Advanced vortex separation is provided by extending and stabilizing the fl ow path while protecting trapped pollutants for a wide range of fl ow rates. Advanced Vortex Separator The Downstream Defender is the most advanced vortex separator available for the removal of sediment, oil and fl oatables from stormwater runoff. The Downstream Defender is proven to be more effi cient than other structural treatment devices in as little as ½ the footprint and is the only separator with internal components proven to prevent pollutant washout. Tangential inlet Dip plate cylinder Benching skirt Outlet pipe Center shaft Center cone Isolated sediment storage zone Access to the sump for cleanout Isolated sediment storage zone Oil & fl oatables storage volume Hydro International • 94 Hutchins Drive • Portland, ME 04102 SS_SW_DD_4-23-07© Hydro International 2007  Certifi cate No. 961366 stormwater This information is subject to change without notice. The Downstream Defender is sized and designed to accommodate site parameters. The device is commonly installed in an on-line confi guration (fi gure A). In an off-line confi guration an upstream diversion structure with an integral weir diverts treatment fl ows to the Downstream Defender. Excess storm fl ows spill over the weir directly to the outlet (fi gure B). Sizing and Design Model Number and Diameter (ft) Peak Treatment Flow (cfs) Maximum Pipe Diameter (in) Headloss at Peak Treatment Flow (in) Oil Storage Capacity (gallons) Sediment Storage Capacity (cubic yards) Minimum Distance from Outlet Invert to Top of Rim (ft) Standard Distance Outlet Invert to Sump Floor (ft) 4 3.0 12 6 70 0.70 3.2 4.0 6 8.0 18 8 230 2.10 3.6 5.9 8 15.0 24 9 525 4.65 4.1 7.7 10 25.0 30 10 1,050 8.70 4.9 9.4 Downstream Defender Design Chart The Downstream Defender is easy to maintain using a sump-vac to remove captured sediment and fl oatables. Cleanout ports are located in the top of the manhole and provide access to pollutant storage areas. Maintenance is generally conducted every 12 to 18 months, although individual maintenance schedules are site specifi c. Hydro International works with owners and municipalities through networks of certifi ed maintenance contractors to ensure proper maintenance practices. Maintenance For more information please call our offi ce toll free at 800-848-2706 or inquire at www.hydro-international.biz. A. Example of On-line Confi guration B. Example of Off-line Confi guration Flow Direction → treatment fl ow path → bypass fl ow path Low Headloss The Downstream Defender has clear openings and no internal restrictions in order to minimize hydraulic losses, blockages and the risk of upstream fl ooding. →→weir wall →Upstream water level Outlet water level→maintenance access lids Downstream Defender →→→ upstream manhole Downstream Defender ® Downstream Defender Hydro International ▪ 94 Hutchins Drive ▪ Portland, ME 04102 Tel: (207) 756-6200 ▪ Fax: (207) 756-6212 ▪ E-mail: hiltech@hil-tech.com DOWNSTREAM DEFENDER® HANDLING AND INSTALLATION INSTRUCTIONS Hydro International's DOWNSTREAM DEFENDER® internal components are manufactured utilizing highly durable thermoplastics; however, improper handling may result in damage to components and accessories. Failure to comply with handling, and installation instructions voids all warranties. 1. Upon delivery of the DOWNSTREAM DEFENDER® components, inspect immediately for defects or shipping damage. If any discrepancies are found, notify Hydro International prior to unloading to initiate corrective action. Unloading of a damaged unit without notifying Hydro International voids all warranties and releases liability of costs to repair or replace from Hydro International and places onto the contractor. 2. At all times during unloading and installation, avoid unnecessary and extreme impacts to the internal components. All components shall be handled with firm and complete support. At no time shall anyone step, stand, or otherwise place an unnecessary load, on the components. 3. The DOWNSTREAM DEFENDER® shall be installed as soon after delivery as practical. Pending installation, all components shall be protected from ultraviolet light, vandalism, and impact. INSTALLATION – reference engineering drawings. 1. Excavation shall be properly prepared in advance and shall meet all applicable specifications for standards of construction. A sufficient sub-base of compacted stone, level and at correct elevation, is required as a minimum. 2. Install the DOWNSTREAM DEFENDER® pre-cast base containing benching skirt in properly prepared excavation. Base must be level prior to installation of successive risers. 3. Install successive risers, cleaning joints and place supplied joint sealant per specifications. Ensure the riser(s) containing the inlet and overflow pipe knockouts is/are orientated per alignment shown on the engineering drawings. Do not install pre-cast lid. Grout pick holes, if applicable, with watertight non-shrink grout. 4. Cut off the end of the inlet pipe (by others) at a 30° angle and connect so that the inlet pipe i.d. is tangent to the pre-cast i.d. as shown on the engineering drawings. Grout inlet knockout with watertight non-shrink grout (by others). Inlet pipe shall not protrude further into the unit than indicated on the engineering drawings. On the interior, grout must be finished to a uniform, smooth surface flush DD - Handling & Install Instructions.doc Page 2 of 2 Rev. 11/10/04 with the pre-cast wall. No grout shall spill inside the unit. If required, plug inlet pipe and overflow pipe knockouts and test for watertightness. The cause of any leaks must be determined and corrected prior to backfilling. Failure to properly perform and pass test if required, releases Hydro from liability ensuing from such failure. 5. Center Shaft & Cone (10’ units): If not bolted, attach shaft to dip plate using supplied 304 ss bolts, flat washers, lock washers and nuts. Install hardware so bolt heads are to the interior of the center shaft. 6. Place approved pipe coupling (by others) onto overflow stub. Using the lifting points on the support frame, carefully lower the dip plate assembly onto the stainless steel ledger angles attached to the interior wall of the pre-cast chamber. Orientate assembly so that overflow pipe stub aligns with overflow pipe knockout. 7. Attach the support frame to the ledger angles using supplied number of 304 ss bolts, flat washers, lock washers and nuts. On 10 foot units, square plate washers (supplied) are to be used in place of flat washers on top of support frame at the connection points to the four ledger angles. 8. Connect the outlet pipe to the overflow stub using the previously installed pipe coupling. Grout manhole outlet knockout with watertight non-shrink grout (by others). On the interior, grout must be finished to a uniform, smooth surface flush with pre-cast wall. No grout shall spill inside the unit. 9. Prepare the upper most riser joint with supplied joint sealant. Install pre-cast lid using match lines to correctly orientate the floatables access. The floatables access shall be located to the influent flow receiving side of the overflow pipe. 10. Install cast frame(s) and cover(s) using accepted construction standards of adjusting to grade. Carefully backfill around unit. Hydro International ▪ 94 Hutchins Drive ▪ Portland, ME 04102 Tel: (207) 756-6200 ▪ Fax: (207) 756-6212 ▪ E-mail: hiltech@hil-tech.com www.Hydro-International.biz Downstream Defender Pipe Connections Defender Outlet The Defender outlet pipe passes through the manhole wall and is connected internally with a coupling to the overflow pipe stub. The overflow pipe stub is part of a roto-molded plastic component that has an outside diameter that corresponds to SDR 35 plastic pipe and cannot be modified. We recommend supporting the pipe and making the internal connection first, and then grouting the manhole opening with non-shrink grout after. Alternately, a manhole penetration boot may be used to obtain a watertight connection through the manhole wall. Depending on the difference in pipe o.d., the internal connection to the pipe stub can be accomplished with a standard pipe coupling, a large diameter coupling and bushing arrangement similar to the Fernco L.D.C.X. product line, a bituminous pipe wrap similar to Mar Mac Polyseal, or pvc fittings. (The pipe wrap is typically the most cost effective means of making the connection.) Where the outside diameters differ by more than 6” a pipe wrap may be the only option. In some instances where there is a very large difference in pipe o.d., a short length of pipe with an o.d. close to the stub should be connected with a standard “Fernco type” coupling and the connection to the larger o.d. pipe should be made outside of the Defender manhole. An external pipe wrap connection for pipes with very large differences in o.d. should utilize a grout diaper around the joint to ensure a watertight connection. In some cases there may be a lead-time of several days to fabricate and ship the required coupling. Please refer to the attached Downstream Defender Coupling Information sheet. Defender Inlet To initiate the vortex flow pattern, the inlet pipe enters the Defender manhole tangent to the inside diameter rather than passing through the manhole center line. The end of the pipe gets cut off at a 30° angle inside the manhole. An internal connection is not necessary on the inlet. To ensure a watertight connection, we recommend grouting the inlet with non-shrink grout. The shape and size of the inlet penetration in the manhole wall make it unlikely that a penetration boot can be used on the inlet. Hydro International ▪ 94 Hutchins Drive ▪ Portland, ME 04102 Tel: (207) 756-6200 ▪ Fax: (207) 756-6212 ▪ E-mail: hiltech@hil-tech.com www.Hydro-International.biz 25 Years of Vortex Technology Downstream Defender® Overflow Pipe Coupling Information DIMENSIONS DEFENDER Diameter (ft.) L (in.) Plastic o/flow pipe stub o.d. (in.) 4 6−3/8 12−1/2 6 9−9/16 18−11/16 8 12−3/4 24−13/16 10 15−1/4 36 VENDORS Product Manufacturer Contact Phone Fernco Fernco − East 800.521.1283 Fernco Fernco − West 800.232.3092 Esky Wrap Cadilloc, Inc. 906.786.0460 Indiana Seal Indiana Seal 800.428.5309 PipeConX** Uniseal 800.443.9081 Polyseal (need to supply pipe materials) Mar Mac Rich Howle, Bob Weir 877.962.7622 To ensure procurement of correct coupling, it is recommended that the coupling manufacturer be contacted directly well in advance with the o/flow pipe stub o.d. as listed above and the material and o.d. of the outlet pipe being utilized. Additional or different equipment may be required to connect to outlet pipe of different diameter or to CPP (Corrugated Plastic Pipe). *Large Diameter Coupling Extra (LDCX) sizing, availability, costs and delivery to be determined by contractor. **PipeConX − no couplings larger than 25", no custom sizes. 6/18/02 Rev. E 25 Years of Vortex Technology Isolator™Row O&M Manual StormTech®Chamber System for Stormwater Management Save Valuable Land and Protect Water Resources 1.1 INTRODUCTION An important component of any Stormwater Pollution Prevention Plan is inspection and maintenance. The StormTech Isolator Row is a patent pending technique to inexpensively enhance Total Suspended Solids (TSS) removal and provide easy access for inspection and maintenance. 1.2 THE ISOLATOR™ROW The Isolator Row is a row of StormTech chambers, either SC-310, SC-740 or MC-3500 models, that is surrounded with filter fabric and connected to a closely located man- hole for easy access. The fabric-wrapped chambers pro vide for settling and filtration of sediment as storm water rises in the Isolator Row and ultimately passes through the filter fabric. The open bottom chambers and perforated sidewalls allow storm water to flow both verti- cally and horizon tally out of the chambers. Sediments are cap tured in the Isolator Row protecting the storage areas of the adjacent stone and chambers from sedi- ment accumulation. Two different fabrics are used for the Isolator Row. A woven geotextile fabric is placed between the stone and the Isolator Row chambers. The tough geo textile provides a media for storm water filtration and provides a durable surface for maintenance operations. It is also designed to prevent scour of the underlying stone and remain intact during high pressure jetting. A non-woven fabric is placed over the chambers to provide a filter media for flows passing through the perforations in the sidewall of the chamber. 2 Call StormTech at 888.892.2694 or visit our website at www.stormtech.com for technical and product information. 1.0 The Isolator™Row The Isolator Row is typically designed to capture the “first flush” and offers the versatility to be sized on a vol- ume basis or flow rate basis. An upstream manhole not only provides access to the Isolator Row but typically includes a high flow weir such that storm water flowrates or volumes that exceed the capacity of the Isolator Row overtop the over flow weir and discharge through a manifold to the other chambers. The Isolator Row may also be part of a treatment train. By treating storm water prior to entry into the chamber system, the service life can be extended and pollutants such as hydrocarbons can be captured. Pre-treatment best management practices can be as simple as deep sump catch basins, oil-water separators or can be inno- vative storm water treatment devices. The design of the treatment train and selection of pretreatment devices by the design engineer is often driven by regulatory requirements. Whether pretreatment is used or not, the Isolator Row is recommended by StormTech as an effective means 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 MANHOLE WITH OVERFLOW WEIR STORMTECH ISOLATOR ROW OPTIONAL PRE-TREATMENT OPTIONAL ACCESS STORMTECH CHAMBERS StormTech Isolator Row with Overflow Spillway (not to scale) Looking down the Isolator Row from the manhole opening, woven geotextile is shown between the chamber and stone base. 2.0 Isolator Row Inspection/Maintenance Call StormTech at 888.892.2694 or visit our website at www.stormtech.com for technical and product information. 3 Maintenance is accomplished with the JetVac process. The JetVac process utilizes a high pressure water noz- zle 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 man- hole 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 cul- verts or large diameter pipe cleaning are preferable. Rear facing jets with an effective spread of at least 45” are best. Most JetVac reels have 400 feet of hose allow- ing maintenance of an Isolator Row up to 50 chambers long. 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. 2.1 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, per- cent imperviousness, climate, etc. all play a critical role in determining the actual frequency of inspection and maintenance practices. At a minimum, StormTech recommends annual inspec- tions. Initially, the Isolator Row should be inspected every 6 months for the first year of operation. For sub sequent 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 deter- mine 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. 2.2 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 main- tenance, 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. StormTech Isolator Row (not to scale) Examples of culvert cleaning nozzles appropriate for Isolator Row maintenance. (These are not StormTech products.) 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 Rows 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 culvert 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 StormTech products are covered by one or more of the following patents: U.S. Patents: 5,401,459; 5,511,903; 5,716,163; 5,588,778; 5,839,844; Canadian Patents: 2,158,418 Other U.S. and Foreign Patents Pending Printed in U.S.A. © Copyright. All rights reserved. StormTech LLC, 2009 S090809 3.0 Isolator Row Step By Step Maintenance Procedures 4 21) B)1) A) StormTech Isolator Row (not to scale) Stadia Rod Readings Fixed point Fixed point Sediment Date to chamber to top of Depth Observations/Actions Inspector bottom (1) sediment (2) (1) - (2) 3/15/01 6.3 ft. none New installation. Fixed point is Cl frame at grade djm 9/24/01 6.2 0.1 ft. Some grit felt sm 6/20/03 5.8 0.5 ft. Mucky feel, debris visible in manhole and in rv Isolator row, maintenance due 7/7/03 6.3 ft.0 System jetted and vacuumed djm Sample Maintenance Log 20 Beaver Road, Suite 104 Wethersfield Connecticut 06109 860.529.8188 888.892.2694 fax 866.328.8401 www.stormtech.com F. Inspection Report Downstream Defender Inspection and Maintenance Log INITIALS DEPTH OF FLOATABLES AND OILS SEDIMENT DEPTH MEASURED VOLUME OF SEDIMENT REMOVED SITE ACTIVITY AND COMMENTS DATE INSPECTION & MAINTENANCE LOG Diversion Structure SITE NAME:Freddy's Frozen Custard & Steakburgers JOB LOCATION:9701/9703 N. Michigan Road (US 421); Carmel, IN 46032 INSPECTION DATE: INSPECTED: Diversion Structure #103 Depth of Depth of Floatables/Oil Sediment Site Activity & Date Initials in Structure(in)in Structure(in)Comments Inspector Signature Printed