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MAY-08-2000 16 47 CAMBRIA 510 420 9170 P 01/24 <br /> From. V-. <br /> U1 � <br /> comop° t37Zld <br /> T131 f%XX <br /> ` [NEW <br /> To: Mr. Dale Ramey TMNSMInAL <br /> City of Ripon <br /> fax: (209) 599-2686 <br /> Re- REQUEST TO DISCHARGE TREATED <br /> GROUND WATER AND TO <br /> CONTINUOUSLY DISCHARGE <br /> TREATED WATER to Sanitary Sewer <br /> from Ground Water Remediation <br /> System <br /> Shell-branded Service Station <br /> 341 East Main <br /> Ripon, Califomia <br /> Date: Monday, May 08, 2000 <br /> Mr Ramey - <br /> Cambna is requesting to discharge water from the groundwater extraction(GWE)system at the Shell- <br /> branded service station at 341 East Main in Ripon, Califomia This groundwater was pumped from <br /> well EW-1 through the water treatment system and into an onsite storage tank from 4128100 to 511100 <br /> Analyses conducted on samples collected on 4128/00 and 5/1100 did not detect hydrocarbons and/or <br /> . fuel oxygenates in the water discharged to the onsite storage tank <br /> Analytical reports for the two sampling events are attached <br /> Summa of Ground Watar Extraction, I prepared two tables that summarize the ground water <br /> extraction to date The first table includes all of the analytical results from samples collected when <br /> the system is operating to date The second summarized the volumes removed by the extraction and <br /> treatment system, and the vacuum truck work Note that the concentration of MTBE in the influent <br /> stream is dropping consistently <br /> We are continuing to haul approximately 4,800 gallons per day from the site to the Shell refinery in <br /> Martinez, CA for disposal This water is not treated by the carbon filtration system at the site <br /> I hope this gives you enough information to approve the discharge of treated water Cambria would <br /> like to discharge the treated water to the sanitary sewer as soon as practicable <br /> Request for Continuous Discharge Cambria is requesting to discharge continuously to the <br /> sanitary sewer system at the site We believe that the treatment system has shown that it can <br /> Oakland CA remove the chemicals of concern from the groundwater stream Cambria is proposing to start <br /> San Ramon CA discharging to the sanitary sewer using the following operation and sampling schedule <br /> Sonoma, CA <br /> poi t E at,a o a • System StartupCambria will sample the system influent, midfluent-1 (between the first <br /> two carbon vessels), midfluent-2 (between the second and third carbon vessels), and <br /> effluent)twice within the first week of operation The samples will analyzed on"24-hour' <br /> cambna turnaround time, so analytical results will be available within two days of the sampling <br /> FnViko.k.ema' event Cambria will fax the results to Dale Ramey and Ron Rowe of San Joaquin <br /> Tedmbgy,ine, County as soon as we receive them <br /> 16,144 65th Street If chemicals of concern are detected in the midfluent-1 sample, a carbon changeout will <br /> suite a be scheduled If chemicals of concern are detected in the midfluent 2 sample, the <br /> Oakland cA 94608 <br /> Tel(510)420-4700 <br /> Fax(510)420-9170 <br />