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I <br /> I 2.0 Isolator Row Inspection/Maintenance StormTech. <br /> 1 2.1 INSPECTION - <br /> The frequency of Inspection and Maintenance varies - <br /> I by location. A routine inspection schedule needs to be \ <br /> established for each individual location based upon site <br /> specific variables. The type of land use (i.e. industrial, <br /> commercial, residential), anticipated pollutant load, per- ' <br /> I cent imperviousness, climate, etc. all play a critical role <br /> in determining the actual frequency of inspection and IP <br /> AP <br /> i <br /> maintenance practices. <br /> I At a minimum, StormTech recommends annual inspec- <br /> tions. <br /> Initially, the Isolator Row should be inspected every Q� <br /> ....__.. 1 <br /> 6 months for the first year of operation. For subsequent <br /> I years, the inspection should be adjusted based upon <br /> previous observation of sediment deposition. ''" <br /> The Isolator Row incorporates a combination of standard <br /> I manhole(s) and strategically located inspection ports <br /> (as needed). The inspection ports allow for easy access Examples of culvert cleaning nozzles appropriate for Isolator Row <br /> to the system from the surface, eliminating the need to maintenance. (These are not StormTech products.) <br /> perform a confined space entry for inspection purposes. <br /> I <br /> Maintenance is accomplished with the JetVac process. <br /> If upon visual inspection it is found that sediment has The JetVac process utilizes a high pressure water noz- <br /> accumulated, a stadia rod should be inserted to deter- zle to propel itself down the Isolator Row while scouring <br /> mine the depth of sediment. When the average depth and suspending sediments. As the nozzle is retrieved, <br /> I of sediment exceeds 3 inches throughout the length of the captured pollutants are flushed back into the man- <br /> hole Isolator Row, clean out should be performed. hole for vacuuming. Most sewer and pipe maintenance <br /> companies have vacuum/JetVac combination vehicles. <br /> I 2.2 MAINTENANCE Selection of an appropriate JetVac nozzle will improve <br /> The Isolator Row was designed to reduce the cost of maintenance efficiency. Fixed nozzles designed for cul- <br /> periodic maintenance. By "isolating" sediments to just verts or large diameter pipe cleaning are preferable. <br /> one row, costs are dramatically reduced by eliminating Rear facing jets with an effective spread of at least 45" <br /> I the need to clean out each row of the entire storage are best. Most JetVac reels have 400 feet of hose allow- <br /> ing If inspection indicates the potential need for main- ing maintenance of an Isolator Row up to 50 chambers <br /> tenance, access is provided via a manhole(s) located long. The JetVac process shall only be performed on <br /> on the end(s)of the row for cleanout. If entry into the StormTech Isolator Rows that have AASHTO class 1 <br /> manhole is required, please follow local and OSHA rules woven geotextile (as specified by StormTech) over <br /> for a confined space entries. their angular base stone. <br /> I StormTech Isolator Row (not to scale) <br /> OPTIONAL INSPECTION PORT LOCATION PER COVER ENTIRE ROW WITH ADS 600ENGINEER'S DRAWING(4'(/00 mm)0 PVC TYP.) NON-WOVEN GEOTEXTILE(OR EQUAL) STORMTECH END CAP <br /> SC-740 8'(2.4 m)WIDE STRIP (SC-740 SHOWN) <br /> SC-3708 SC-310.3 5'(1.5 WIDE STRIP <br /> 1 /iii�l�!✓/iiiiiii//l///iiiiiiiiii i mr iiiiii(8/llliiiiii-m) .""'- i hill/ iii/ <br /> CATCH BASIN OR \. tri I I <br /> 4- <br /> ...,:::::,__:,;_.. , Applpir 'T.:Aa4'.....,;0- .,-.......,--m. -Hi- <br /> I '-''' If I\44P.,:ittiNg 1 - A <br /> - .,,'.iitiiiiiiik"..4"6 Ai I I rfinifir, • .• .' Sittifigit. \ <br /> SUMP DEPTH BV -1I Ir- 1' / -I -t�7T-T� <br /> I <br /> ESIGN ENGINEER -1 4 I"r <br /> 2 LAYERS OF ADS 315 WOVEN GEOTEXTILE(OR EQUAL) <br /> SC-740,DG780,MC-3500 8 MC�500•24-(600 mm)PIPE BETWEEN STONE BASE AND CHAMBERS <br /> 1(. _ SC-370 8 SC-310-3-12'(300 mm)PIPE CHAMBER(SC-740 SHOWN) MC-4500-10.3'(3.1 m)WIDE STRIP(ADS 315WTM) <br /> /• ' MC-3500-8.25'(2.5 m)WIDE STRIP(ADS 315WTM) <br /> SC-740 8 DC-780-5'(1.5 m)WIDE STRIP(ADS 315WTK) <br /> 111 SC-310 8 SC-310-3-4'(1.2 m)WIDE STRIP(ADS 315WTK) <br /> NOTE:NON-WOVEN FABRIC IS ONLY REQUIRED OVER THE INLET PIPE CONNECTION INTO THE END CAP FOR DC-780,MC-3500 AND <br /> MC-4500 CHAMBER MODELS AND IS NOT REQUIRED OVER THE ENTIRE ISOLATOR ROW. <br /> Call StormTech at 888.892.2694 or visit our website at www.stormtech.com for technical and product information. 3 <br />