Suggested Best Maintenence Practices
Clean catch basins annually, or as needed, targeting early spring and late fall. Catch basins should be checked for sediment levels in sump. Those in areas that accumulate a significant amount (over 50% full) of sediment should be cleaned more frequently.
Prioritize inspection and maintenance for catch basins as determined by IDDE plan and catchment study.
EPA recommends cleaning basins when solids reach one-third the depth from the basin bottom to the invert of the lowest pipe into or out of the basin.
Clean manually or with equipment
Properly dispose of catch basin material or store until contractor picks up cleanings (Massachusetts DEP and EPA requires chemical analysis to determine if substance is hazardous waste).
Properly dispose of catch basin material or store until contractor picks up cleanings (Massachusetts DEP and EPA requires chemical analysis to determine if substance is hazardous waste).
Repair damaged catch basins including outlet traps.
Install hoods if catch basins do not have them.
Conduct IDDE training and inform employees that catch basins are part of the stormwater drainage system and not the sanitary sewer system.
The DPW maintains a log of cleaning activities, information should include amount of cleanings removed and areas with heavily filled basins.