J_2024 05 09_West Orange Stormwater Management Plan

(gf Aqua-Filter™ Maintenance Proper maintenance of the Aqua-Filter™ system is needed for the unit to operate efficiently. Typically, inspection of the Aqua-Swirl™ pretreatment chamber and the filtration chamber should be performed on a quarterly basis. Information gathered during the first year of service can be used to create a maintenance plan appropriate for the site. Aqua-Swirl™ Pretreatment Chamber The Aqua-Swirl™ is easily inspected from the surface. Floating debris and free oil can be observed along with the captured stormwater by removing the manhole cover. Sediment depth is determined by lowering a measuring device (e.g. stadia rod) to the top of the sediment pile. When the sediment pile is within 30 to 36 inches from the water surface, cleaning is required. Typically, a vacuum truck is used to first remove the captured no^bia debris in the Aqua-swift™ floating materials from the water's surface before lowering the vac-hose into the accumulated sediment pile for its removal. - 4 ... ;v * . ... » . *( For more detail regarding the inspection and maintenance of the pretreatment chamber, please see the previous Section on the Aqua-Swiri™ Inspection and Maintenance. Aqua-Filter™ Filtration Chamber The filter media is also easily observed from the surface. Manhole covers are spaced over the entire filtration bed to provide easy access. AquaShield™ provides a customized manhole cover with our logo to make it easy for maintenance crews to locate the system in the field.