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y 2� <br /> • BROWN A � �� ,;-,�-., -, ;�,_ E���, z <br /> 1�f D �� l 1_IS � ia L„ !_ �1l <br /> �v �J� F`o � � �.t ��e ��a� <br /> 3 <br /> CALDWELL1] Ft358 <br /> May 19, 1994 <br /> Mr Chuck Carmel <br /> .ARCO Products Company <br /> 2000 Alameda de las Pulgas <br /> Post Office Box 5811 <br /> San. Mateo, Cahfonua 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, Califorrua lasted below is a summary of activities <br /> and discharge of groundwater at the site from February 24, 1994, through March 15, 1994 <br /> Table I presents a summary of the laboratory analysis m this reporting period (The complete <br /> laboratory report for this reporting penod is included m Attachment A) <br /> 3/15/94 Collected effluent water sample for laboratory analysis of total petroleum <br /> hydrocarbons (EPA Method 8015, Modified), benzene, ethylbenzene, toluene, <br /> and xylenes (EPA Method 602), and trace metals (EPA Method 200 7) <br /> The total volume of water discharged during the penod was 225,297 gallons The average <br /> flow rate dung this penod (19 days) was approximately 8 2 gallons per mmute The average <br /> daily flow was 11,858 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 wasprepared in accordance with the standards of the environmental consulting industry at the time it was <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 anv additional environmental <br /> conditions beyond that described in this report exist at this site <br /> i 2 73\C0RRF s Pit 27 3 A.PR.RPr <br /> Environmental Engineering And Consulting Analyacal Services <br /> 9616 111CRov A�EWLE P 0 Box 13449 SAC RANIEtiro CA 95813 3449 <br /> (916) 444 0123 FAX (916) 856 5277 <br />