Laserfiche WebLink
Property <br />Infiltration Trench <br />Inspection and Maintenance Checklist <br />Property Owner: <br />Treatment Measure No.: Date of Inspection: Type of Inspection: o Monthly ❑ Pre -Wet Season <br />❑ After heavy runoff ❑ End of Wet Season <br />Insoectorls): o Other: <br />Defect <br />Conditions When Maintenance is Needed <br />Maintenance <br />Comments (Describe maintenance <br />Results Expected When Maintenance is <br />Needed/(V/N) <br />completed and if needed maintenance was <br />Performed <br />not conducted, nate when It will be done) <br />L Ste using Water <br />When water stands in the infiltration trench <br />There should be no areas of are ndi ng <br />between storms and does not dra In within 5 <br />water once inflow has ceased. Any of the <br />days after raske ll. <br />following may apply: sediment or trash <br />blockages removed, improved grade from <br />head to foot of infiltration trench, <br />removed clogging at check dams, or <br />added underdrame. <br />2. Trash and Debris <br />Trash and debris accumulated mine <br />Trash and debris removed from <br />Accumulation <br />infiltration trench, <br />infiltration trench and disposed of <br />properly. <br />3. Sediment <br />Evidence of sedimentation in trench. Less <br />Material removed and disposed of <br />than 50% storage volume remaining in <br />properly so that there is no clogging or <br />sediment traps, foresaw, or pretreatment <br />blockage. <br />,wales. <br />4. Inlet/Outlet <br />Inlet/outlet areas clogged with sedimentor <br />Material removed and disposed of <br />debris, and/or eroded. <br />properly so that there is no clogging or <br />blockage in the inlet and outlet areas. <br />S. Overflow <br />Clogged with sediment or debris, and/or <br />Material removed and disposed of <br />Spillway <br />eroded. <br />properly so that there is no clogging or <br />blockage, and trench is restored to design <br />condition. <br />6. Filter Fabric <br />Annual inspection, by removing asmall <br />Replace filter fabric, as needed, to restore <br />section of the top layer, shows sediment <br />infiltration trench to design condition, <br />accumulation that may lead to trench failure. <br />7. Observation Well <br />Routine monitoring of observation well <br />Restore trench to design conditions, <br />indicates that trench is not draining within <br />Observation well cap is sealed. <br />specified time or observation well cap is <br />missing. <br />8. Miscellaneous <br />Any condition not covered abovethat needs <br />Meet the design specification. <br />attention In order for the infiltration trench <br />to function as designed. <br />Infiltration Trench Maintenance Plan - Page 3 <br />ATTV/AGR.2022.324/Michael Choi (Page 15 of 16) <br />