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BROWN AND <br /> r <br /> C A L D W E L L <br /> February 9, 1996 <br /> Mr Kyle Christie <br /> ARCO Products Company <br /> Post Office Box 612530 <br /> San Jose, California 95161 017-3316-01/1 <br /> Subject Status of Groundwater Extraction System, ARCO Facility 2133, <br /> Stockton, California <br /> Dear Mr Christie <br /> This Ietter presents the current status of the groundwater extraction system and the results of the <br /> monthly groundwater discharge sampling event for all constituents Iisted in the permit for <br /> ARCO Products Company (ARCO) Facility 2133, located at 2908 Benjamin Holt Drive in <br /> Stockton, California Listed below is a summary of activities and discharge of groundwater at <br /> the site from November 15, 1995 through December 15, 1995 Table 1 presents a summary of <br /> the laboratory analysis in this reporting penod (The complete laboratory report for this <br /> reporting period is included in Attachment A) <br /> 12/15/95 Collected effluent water sample for laboratory analysis of total petroleum <br /> hydrocarbons, benzene, ethylbenzene, toluene, and xylenes (EPA Methods <br /> 5030/8015 Modified/8020 and 418 1) The sample was also analyzed for total <br /> lead <br /> The total volume of water discharged during the period was 123,963 gallons The average flow <br /> rate during this period (30 days) was approximately 2 9 gallons per minute The average daily <br /> flow was 4,132 gallons <br /> Table 2 presents the average pounds per day of each constituent discharged to the sanitary sewer <br /> The quantity of hydrocarbons being discharged is in compliance with the City of Stockton <br /> Wastewater Discharge Permit issued for this site The constituent quantities were calculated <br /> using the following formula <br /> This report was prepared in accordance with the standards of the environmental consulting industry at the time it"as <br /> prepared It should not be relied upon by parties other than those for whom it was prepared and then only to the <br /> extent of the scope of work which was authorized This report does not guarantee that no additional environmental <br /> contamination beyond that described in this report exists at the site <br /> Environmental Engineering And Consulting AnaVical Servtces 3316\REPORTS`STATIAN6 DOC <br /> 9616 MICRON A I E LE $LITE 600 5kCRA%IE1,T0 CA 93811 2627 <br /> (916} 444 0 12 3 Far (916) 856 5277 <br />