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I <br /> I <br /> I 3.0 Isolator Row Step By Step Maintenance Procedures <br /> I <br /> Step 1) Inspect Isolator Row for sediment Stor Tech Isolator Row(not to scale) <br /> A) Inspection ports(if present) <br /> i. Remove lid from floor box frame 11 B) 2 I i l nt <br /> ' ii. Remove cap from inspection riser <br /> iii. Using a flashlight and stadia rod, <br /> measure depth of sediment and =NM' <br /> record results on'maintenance log. <br /> iv. If sediment is at, or above, 3 inch Trirliriliffigrrriloolyivr. <br /> depth proceed to Step 2. If not 4 111'1 <br /> I proceed to step 3. <br /> B)All Isolator Rows <br /> I i. Remove cover from manhole at <br /> upstream end of Isolator Row <br /> ii. Using a flashlight, inspect down Isolator Row through outlet pipe <br /> 1.Mirrors on poles or cameras may be used to avoid a confined space entry <br /> I 2.Follow OSHA regulations for confined space entry if entering manhole <br /> iii. If sediment is at or above the lower row of sidewall holes(approximately 3 inches) proceed to Step 2. <br /> If not proceed to Step 3. <br /> I Step 2)Clean out Isolator Row using the JetVac process <br /> A)A fixed culvert cleaning nozzle with rear facing nozzle spread of 45 inches or more is preferable <br /> B)Apply multiple passes of JetVac until backflush water is clean <br /> C)Vacuum manhole sump as required <br /> I Step 3)Replace all caps, lids and covers, record observations and actions <br /> Step 4)Inspect&clean catch basins and manholes upstream of the StormTech system <br /> I Sa ple Maintenance Log <br /> Stadia Rod Readings <br /> Fixed point Fixed point Sediment <br /> Date to chamber to top of Depth Observations/Actions Inspector <br /> I <br /> bottom(1) sediment(2) (1) (2) <br /> 3/15/01 6.3 ft. none New installation.Fixed point is CI frame at grade djm <br /> 9/24/01 6.2 0.1 ft. Some grit felt _ sm <br /> I 6/20/03 5.8 —0.5 ft. Mucky feel,debris visible in manhole and in ry <br /> Isolator row,maintenance clue <br /> 7/7/03 6.3 ft. 0 System jetted and vacuumed djm <br /> I <br /> I <br /> 4.4 <br /> StormTech® <br /> Detention•Retention•Recharge <br /> Subsurface Stormwater Managements"' <br /> I20 Beaver Road,Suite 104 I Wethersfield I Connecticut 106109 <br /> 860.529.8188 1888.892.2694 I fax 866.328.8401 I www.stormtech.com <br /> IStormTech 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; <br /> Canadian Patents:2,158,418 Other U.S.and Foreign Patents Pending Printed in U.S.A. <br /> I <br /> ©Copyright.All rights reserved.StormTech LLC,2009 S090809 <br />