Parking lot stormwater treatment vault maintenance inspect and maintain one (1) contech media filtration system (MFS) with sixteen (16) zeolite, perlite and GAC (ZPG) cartridges in accordance with the…

Parking lot stormwater treatment vault maintenance inspect and maintain one (1) contech media filtration system (MFS) with sixteen (16) zeolite, perlite and GAC (ZPG) cartridges in accordance with the manufacturer s operations and maintenance guidelines. The system is a contech CDS model 612 MFS 8X11 vault installed in the suisun BAY reserve fleet parking lot, above ground. Contractor is to perform the following services: CDS MFS system clean-out services. Removal of all captured debris and the pump-out all fine silt and sediment. Pressure wash and power vacuum internal components, walls and sump floor. Remove barnacles from slide gate outlet valve and weir that are interfering with proper operation. Dispose of debris and sediment at approved landfill. MFS device cartridges media exchange service. Remove and dispose of spent (16) perlite and GAC (ZPG) media cartridges and replace with manufacturer supplied ZPG cartridges. Contractor shall provide forklift to safely lift cartridges off and back on top of the 9 foot tall vault. Pump station 1 clean-out services. Removal of captured debris accumulation and pump-out of all fine silt and sediment. Pressure wash and power vacuum pump station walls, weirs, baffles, and sump floor. Dispose of debris in approved landfill. Pump station 2 clean-out services. Removal of captured debris accumulation and pump-out of all fine silt and sediment. Pressure wash and power vacuum pump station walls, weirs, baffles, and sump floor. Dispose of debris in approved landfill. Retention trough clean-out services. Complete clean-out of the site retention trough located atop the adjacent perimeter wall including trash debris, accumulated sediment and weed vegetation. Pressure-wash until clean. There is approx. 2 inches of sediment accumulated at the low point, predominately in the southern half of the trough. Dispose of debris in approved landfill. Vault retention trough pre-filter media exchange remove and dispose of spent media in the crescent filter located in the retention trough and replace with TR24-.5(8)FOG-bftg media cartridge system. Provide a report documenting the maintenance performed of the system, including photographs. At a minimum, the report shall contain all of the information listed in the storm filter maintenance report form included in the manufacturer s operations and maintenance guidelines. Service of the contech CDS model 612 MFS 8X11 vault system requires confined space entry. Contractors performing the requested services shall be confined space and CA OSHA equipped and certified to enter the vault.