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AI-T[ <br /> B R 0 W N ASND �3; <br /> �i s <br /> C A L D W E L L " " ry P'' ' • ! 9 <br /> November 16, 1995 <br /> Mr Kyle Christie <br /> ARCO Products Company <br /> Post Office Box 612530 <br /> San Jose, California 95161 017-2060-01/1 <br /> Subject Status of Groundwater Extraction System, ARCO Facility 2133, <br /> Stockton, California <br /> Dear Mr Christie <br /> This letter presents the current status of the groundwater extraction system and the results of the <br /> monthly groundwater discharge sampling event for all constituents listed in the permit for <br /> ARCO Products Company (ARCO) Facility 2133, located at 2908 Benjamin Holt Drive to <br /> Stockton, California Listed below is a summary of activities and discharge of groundwater at <br /> the site from September 19, 1995 through October 23, 1995 Table 1 presents a summary of the <br /> laboratory analysis in this reporting period (The complete laboratory report for this reporting <br /> (• period is included in Attachment A) <br /> 10/23/95 Collected effluent water sample for laboratory analysis of total petroleum <br /> hydrocarbons, benzene, ethylbenzene, toluene, and xylenes (EPA Methods <br /> 5030/8015 Modified/8020) <br /> The total volume of water discharged during the period was 107,645 gallons The average flow <br /> rate during this period (34 days) was approximately 2 2 gallons per minute The average daily <br /> flow was 3,166 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 /> W — L"— x g x lb x 3 78L x Q gal <br /> L 1,000,000 4g 454 g gal day <br /> where <br /> W = Average amount of chemical discharged, lbs/day <br /> Q = Average daily flow <br /> C = Concentration U g/L <br /> 206MC0RRESP4)C M5 DOC Environmental Engineenng And Consulting Analytical Services <br /> 9616 M i C R 0 A% FsLE S L i T E 600 S4LR1mENT0 CA 9 827 2627 <br /> f916) 444 0 12 3 FA t [916) 8)6 5277 <br />