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Isolator Row Plus Inspection/Maintenance Inspection via a manhole(s) located on the end(s) of the row for The frequency of inspection and maintenance varies cleanout. If entry into the manhole is required, please by location. A routine inspection schedule needs to follow local and OSHA rules for a confined space be established for each individual location based entry. upon site specific variables. The type of land use Maintenance is accomplished with the JetVac (i.e. industrial, commercial, residential), anticipated process. The JetVac process utilizes a high pressure pollutant load, percent imperviousness, climate, water nozzle to propel itself down the Isolator Row etc. all play a critical role in determining the actual Plus while scouring and suspending sediments. frequency of inspection and maintenance practices. As the nozzle is retrieved, the captured pollutants At a minimum, StormTech recommends annual are flushed back into the manhole for vacuuming. inspections. Initially, the Isolator Row Plus should Most sewer and pipe maintenance companies have be inspected every 6 months for the first year of vacuum/JetVac combination vehicles. Selection of an operation. For subsequent years, the inspection appropriate JetVac nozzle will improve maintenance should be adjusted based upon previous observation efficiency. Fixed nozzles designed for culverts or large of sediment deposition. diameter pipe cleaning are preferable. Rear facing jets with an effective spread of at least 45” are best. The Isolator Row Plus incorporates a combination StormTech recommends a maximum nozzle pressure of standard manhole(s) and strategically located of 2000 psi be utilized during cleaning. JetVac reels inspection ports (as needed). The inspection ports can vary in length. For ease of maintenance, ADS allow for easy access to the system from the surface, recommends Isolator Row Plus lengths up to 200' eliminating the need to perform a confined space (61 m). The JetVac process shall only be performed entry for inspection purposes. on StormTech Isolator Row Plus that have ADS If upon visual inspection it is found that sediment Plus Fabric (as specified by StormTech) over their has accumulated, a stadia rod should be inserted to angular base stone. determine the depth of sediment. When the average depth of sediment exceeds 3" (75 mm) throughout the length of the Isolator Row Plus, clean-out should be performed. Maintenance The Isolator Row Plus was designed to reduce the cost of periodic maintenance. By “isolating” sediments to just one row, costs are dramatically reduced by eliminating the need to clean out each row of the entire storage bed. If inspection indicates the potential need for maintenance, access is provided StormTech Isolator Row Plus (not to scale) 3 Page 584 of 1174