Agmt12 EnviroSupply & Services, Inc.

Browse Search

EXHIBIT A PROJECT DESCRIPTION: Carbon change-out services, on as-needed basis, for the dewatering/filtration system in the City's Jefferson Avenue Underground Parking Garage located at 850 Jefferson Avenue, Redwood City, CA. The Jefferson Underground Parking Garage and dewatering/filtration system has been in operation since 2005. Monthly reports are prepared and submitted to the California Regional Water Quality Control Board based sampling of the influent and effluent. When the results show that the concentration of hydrocarbons or other hazardous materials is approaching the threshold levels, the carbon in all four carbon vessels are changed out. Replacement carbon may be reactivated carbon or virgin carbon depending on concentration of detected hydrocarbons. Each carbon vessel can hold up to 2,000 Ibs of carbon or a total of 8,000 pounds. The four carbon vessels are located in the P2 level in the dewatering/filtration room where access is limited. The vehicle height limit is 7 feet. On average, the system (all four vessels) require two (2) change outs per y ear. SCOPE OF WORK: • Contractor shall perform carbon change-outs of four (4) dewatering/filtration system vessels, in the City's Jefferson Avenue Underground Parking Garage located at 850 Jefferson Avenue, four (4) times on an as-needed basis. Contractor shall also replace particulate filter bags when changing out carbon. • Contractor shall inspect dewatering system piping on a monthly basis. TIME SCHEDULE: City shall notify Contractor when change-out of carbon is necessary. City shall specify either reactivated or virgin carbon at that time and Contractor shall perform change-out within ten (10) days of notification. FEE SCHEDULE: Cost may change depending on how often carbon filters require carbon replacement and the type of carbon (reactivated or virgin) required by the City. EnviroSupply Annual Description Quantity Cost Each Amount 1 8,000 Ib.Reactivated Carbon 4 $8,480.00 $33,920.00 2 8,000 Ib.Virgin Carbon 4 $14,240.00 3 Monthly inspection of pipes 12 $475.00 $5,700.00 4 Replace particulate filter bags 2 filters 4 times/yr $20.00 $80.00 5 Hourly rate for plumber 40 $65.00 2 600.00 Total $42,300.00 All expenses and incidental costs are included.