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BROWN AND 1 <br /> August 31 1994 <br /> Mr Chuck Carmel <br /> ARCO Products Company <br /> 2000 Alameda de ]as Pulgas <br /> Post Office Box 5811 <br /> San Mateo, California 94402 017-1273-01/1 <br /> Subject Status of Groundwater Extraction System, ARCO Station 2133, <br /> Stockton, California <br /> Dear Mr Carmel <br /> This letter presents the current status of the groundwater extraction system and the results of <br /> groundwater discharge sampling at ARCO Products Company (ARCO) Station 2133, located <br /> at 2908 Benjamin Holt Drive in Stockton, California Listed below is a summary of activities <br /> and discharge of groundwater at the site from June 16, 1994, through July 12, 1994 Table 1 <br /> . presents a summary of the laboratory analysis in this reporting period (The complete <br /> laboratory report for this reporting period is included in Attachment A). <br /> 7112/94 Collected effluent water sample for laboratory analysis of total petroleum <br /> hydrocarbons, benzene, ethylbenzene, toluene, and xylenes (EPA Methods <br /> 5030/8015 Modified/8020, petroleum oil (EPA 418 1), trace metals (EPA <br /> Method 200 7), total suspended solids, biochemical oxygen demand and <br /> (EPA 824018270) <br /> The total volume of water discharged during the period was 139,889 gallons The average <br /> flow rate during this period (26 days) was approximately 3 7 gallons per minute The average <br /> daily flow was 5,380 gallons <br /> Table 2 presents the average pounds per day of each constituent discharged to the sanitary <br /> sewer The quantity of hydrocarbons being discharged is in compliance with the City of <br /> Stockton Wastewater Discharge Permit issued for this site The constituent quantities were <br /> calculated using the following formula <br /> This report was prepared in accordance with the standards of the environmental consulting industry at the time it was <br /> prepared It should not be relied upon by parries 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 any additional environmental <br /> conditions beyond that described in this report exist at this site <br /> { 1273�CORRESF1273AUG RPT <br /> Environmental Enarneerinq And Consulting Analytical Serwces <br /> 9616 \11CRotiA� ENEE P C Bo\ 13449 S �CROIE`ro CA 9) 813 3449 <br /> (916) 444 0123 FaK (916) 856 ) 2 7 7 <br />