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CAAABRIA <br /> - <br /> � July 7, 1999 <br /> Mr Ron Rowe <br /> San Joaquin County Department of Public Health Services <br /> Environmental Health Division <br /> 304 East Weber Avenue, 3rd Floor <br /> Stockton, California 95201-0388 <br /> Re Pump Test Investigation Report <br /> Shell-branded Service Station <br /> 341 Main Street <br /> Ripon, California <br /> Incident#98995874 <br /> Cambria Project#241-0324 <br /> Dear Mr Rowe <br /> On behalf of Equiva Services LLC (Equiva), Cambria Environmental Technology, Inc (Cambria) <br /> is submitting this report summarizing the step drawdown test and the pumping test performed at , <br /> the site referenced above <br /> .` The scope of work was outlined in Cambria's December 18, 1999 Investigation Work Plan <br /> ! Addendum #5 and approved with minor modifications by San Joaquin County Department of <br /> Public Health Services (SJCPHS) in a facsimile dated December 28, 1998 The purpose of the <br /> pumping tests was to estimate aquifer parameters, such as transmissivity and hydraulic <br /> conductivity, and well efficiency <br /> Site Description The site is located at the northwest corner of the intersection of East Main <br /> Street and the Main Street Overcrossmg in Ripon, California A site plan is included as Figure 1 <br /> The site is currently an operating Shell-branded Service Station Adjacent properties are both <br /> commercial and residential An operating Chevron Service Station is located southwest of the <br /> Shell-branded station, across East Main Street A summary of previous investigations was <br /> included in Cambria's CPT Investigation Report, dated August 17, 1998 <br /> Oakland CA <br /> Sonoma CA <br /> Poriland OR <br /> Seattle WA <br /> Cambria <br /> Technology, Inc <br /> )144 65th Street <br /> h Suite 6 <br /> Oakland CA 946o8 <br /> Tel (510) 420-0700 <br /> Fax (510) 420-9170 <br />