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++ JUL-12-2000 16:26 CRMERIR 510 420 9170 P.01i35 <br /> CAM aRIA <br /> To: Mr. Dale Ramey <br /> City of Ripon TRANSMITTAL <br /> fax: (209)$99.2866 <br /> Re: Ground Water Extraction System <br /> Status and Analytical Results <br /> Shell-branded Service Station <br /> 341 East Main <br /> Ripon, California <br /> Date: Wednesday, July 12, 2000 <br /> Mr. Ramey - <br /> Cambria performed a carbon changeout at the Shell-branded service station at 341 East Main in Ripon, <br /> California on June 19, 2000, and restarted the system on .lune 20, 2000, after the carbon been soaked <br /> overnight, The laboratory analysis detected MTBE in the effluent samples collected on June 20, 2000, <br /> June 28,2000, and July 7, 2004. It is my opinion that the best explanation for these detections is that some <br /> contamination of the effluent samples was introduced by the sample ports, Or hoses between Carbon vessels <br /> and the sewer, after the carbon changeout_ Cambria will shut the system down today,July 12,2000. <br /> 1 have attached a summary table and analytical results from operation and sampling of the ground water <br /> extraction system_ <br /> We are developing a plan to restart the system that will include procedures for the system startup,sampling, <br /> and analyses, We will restart the system only after your approval of our plan_ <br /> Please call me at(510)420-3316 if you have any questions. <br /> Owen Ratchye <br /> CC. Ron Rowe,San Joaquin County Environmental Health Department,fax-(209)468-3433 <br /> Karen Petryna, Equiva Services <br /> Oakland, CA From the desk of... <br /> San Ramon, GA <br /> S O e a m a, CA Owen C.Ratchye,P.E. <br /> ?O r t I a n d, OR Senior Project Engineer <br /> Cambria Environmental Technology,Inc. <br /> ca�4rrbrla 1144 65th Street,Suite C <br /> Enviromertal 0:41rlanr4 re oAtino <br /> Taehnolow. <br /> °144 65th Street (510)420-3316 <br /> Fax,(510)42,0-9170 <br /> Sulte 8 <br /> Oakland,CA 946" <br /> Tel(510)AZO-0700 <br /> Fax($40)420-97�0 ■ <br />