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DIY s 06 February 2004 AGE-NC Project No 01-0865 Page 2 of 3 remediation system be installed and continuously operated in the areas of ground water contamination by 28 May 2004 Therefore, AGE intends to mstall an on-site multi-media ground water remediation system for treatment of extracted ground water Ground water will be extracted from the extraction well utilizing a dedicated, submersible Durham Geo pump and at pumping rates between 2 and 5 gallons per minute(GPM)for a total discharge rate of up to 5 GPM From the extraction wells, ground water will be routed to an on-site treatment system The first stage of treatment will consist of two 1,000-pound granular activated carbon(GAC) absorption vessels designed to absorb TPH-g,BTEX and fuel additives,including MTBE, a second treatment stage will remove MTBE via absorbtion in a 1,000-pound SunSolve vessel, the final stage will utilize a 1,000-pound GAC vessel to ensure that all petroleum hydrocarbon products have been removed Sample ports will be located between all treatment units to allow detection of media break- through and to obtain final discharge samples Following treatment, clean water will be discharged utilizing 2-inch diameter PVC underground piping into the agriculture drainage ditch immediately east ofthe marina,the drainage ditch is owned by Henry and Vivian Rurup The water from the drainage ditch drams into the north side of the Island Drainage Canal where the water is pumped into the Little Connection Slough via a pumping station located at the western end of the canal,directly south of the marina The desig*ied flow of the treatment and disposal system is for 10 GPM The sampling ports installed on the treatment system will enable the monitonng of the influent Lpre- treated) and effluent (treated) water from the Herman and Helen's Marma site Prior to any discharge, an effluent monitoring and sampling program will be pre-approved by the California Regional Water Quality Control Board- Central Valley Region to ensure clean water disposal To demonstrate compliance with the RWQCB General Order No 5-00-119, Herman and Helen's Manna will follow the RWQCB's Momtonn.g and Reportirig Program in Attachment B of General Order No 5-00-119 for Recerving Water Monitoring standards Receiving water monitoring will include monthly field measurements and observations for the presence or absence of dissolved oxygen,suspended matter,discoloration,bottom deposits,aquatic hfe,sheen,visible film,fungi and any potential nuisance conditions Field measurements and observations will be recorded in notebooks and reported in quarterly reports submitted to the RWQCB Based on modeling calculations of the Herman and-Helen's Manna subsurface impacted ground water plume,AGE estimates that discharge into the agriculture drainage ditch would be desired for approximately 36 to 48 months Advanced GeoEnvironmental,Inc