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,7 <br /> rr - -- <br /> Al B R 0 W N A N D `, ° <br /> ,rI I '�r1'V'I� <br /> C A L D W E L L 911 .JAN 21 PM 1� 55 <br /> January 19, 1994 <br /> Mr Chuck Carmel <br /> ARCO Products Company <br /> 2000 Alameda de las Pulgas <br /> Post Office Box 5811 <br /> San Mateo, California 94402 017-7452-0411 <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 or <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 November 11, 1993, through December 8, 1993 <br /> Table 1 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 /> 1218193 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 organic lead (EPA Method 200 7) <br /> The total volume of water discharged during the period was 382,640 gallons The average <br /> flow rate during this period (27 days) was approximately 9 8 gallons per minute The average <br /> daily flow was 14,172 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 tollowmg 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 parties other than those for whom it was prepared, and then onh to the <br /> extent of the scope of work which was authorized This report does not guarantee that any additional environmental <br /> . conditions bevond that described in this report exist at this site <br /> 74521CORRESP174((52�^jj04)AN <br /> Env ronmenta�Engineering And Consukmg Analytical Services <br /> 9616 Micko� Ari %i r P 0 Bov 13449 S 1CROI1 �Io CA 9)813 3449 r <br /> ( 916 ) 444 0123 FAX 19161856 X 2 7 7 <br />