7800 EVERGREEN WAY HYUNDAI O&M Manual 2025-04-28

Isolator Row Inspection/Maintenance Inspection via a manhole(s) located on the end(s) of the row The frequency of inspection and maintenance varies for cleanout. If entry into the manhole is required, by location. A routine inspection schedule needs to please follow local and OSHA rules for a confined be established for each individual location based space entries. 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 etc. all play a critical role in determining the actual Row while scouring and suspending sediments. frequency of inspection and maintenance As the nozzle is retrieved, the captured pollutants practices. are flushed back into the manhole for vacuuming. At a minimum, StormTech recommends annual Most sewer and pipe maintenance companies have inspections. Initially, the Isolator Row should be vacuum/JetVac combination vehicles. Selection of an inspected every 6 months for the first year of appropriate JetVac nozzle will improve maintenance operation. For subsequent years, the inspection efficiency. Fixed nozzles designed for culverts or should be adjusted based upon previous large diameter pipe cleaning are preferable. Rear observation of sediment deposition. facing jets with an effective spread of at least 45" The Isolator Row incorporates a combination of are best.JetVac reels can vary in length. For ease of maintenance, ADS recommends Isolator Row standard manhole(s) and strategically located lengths up to 200" (61 m). The JetVac process shall inspection ports (as needed). The inspection ports only be performed on StormTech Isolator Rows allow for easy access to the system from the surface, that have AASHTO class 1 woven geotextile (as eliminating the need to perform a confined space specified by StormTech) over their angular base entry for inspection purposes. stone. If upon visual inspection it is found that sediment has accumulated, a stadia rod should be inserted to determine 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. 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 ' ' dob,- the entire storage bed. If inspection indicates the potential need for maintenance, access is provided StormTech Isolator Row(not to scale) Note: Non-woven fabric is only required over the inlet pipe connection into the end cap for SC-160LP, DC-780, MC 3500 and MC-7200 chamber models and is not required over the entire Isolator Row. OPTIONAL INSPECTION PORT SG-T40.SC-310;COVER ENTIRE ISOLATOR ROW WITH ADS GEOSYNTHETICS 601T NONWOVEN GEOTEMILE SC-730'.8'(2 4 m)MIN WIDE ---— SC-310.5'(1.5 m)MIN WIDE STORMTECH CHAMBER MC-4500,MC-7200,DC-T80,SC-160LP;COVER PIPE CONNECTION TO END CAP WITH ADS GEOSYNTHETICS 801T NON-WOVEN GEOTEMILE STORMTECH END CAP OAMANHOLE TCH B SIN ap i i'i i' If'' �i1i i !!i 'iI li 1111111 il' 'i i y SUMP DEPTH TBD BY SITE DESIGN ENGINEER (2,[600 mm)MIN RECOMMENDED) TWO LAYERS OF ADS GEOSYNTHETICS 315WT WOVEN GEOTE%TILE BETWEEN FOUNDATION STONE ANDNDCHAMBERS CONTINUOUS FABRIC WITHOUT SEAMS 24'(600 mm)HDPE ACCESS PIPE REQUIRED:MC-7200.MC-35®SC-T40,DC-760 10.3'(3.1 m)MIN WIDE'.MC-7200 12'(300 mm)HDPE ACCESS PIPE REQUIRED:SC-310 B.25'(2.5 m)MIN WIDE'.MC 8'(200 mm)HDPE ACCESS PIPE REQUIRED:SC-160LP 5'(1 5 m)MIN WIDE'.DC-TBO,SC-"!40 4'(1.2 m)MIN WIDE:SC-310.SC-160LP 3