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B R 0 W N A o <br /> 141994 <br /> October 11, 1994 ENVrit.��N <br /> p T?M!T 'LTH <br /> f�V1Cf3 <br /> Mr Kyle Christie O(A <br /> ARCO Products Company <br /> 2000 Alameda de las Pulgas <br /> Post Office Box 5811 <br /> San Mateo, California 94402 017-1273-0111 <br /> Subject Status of Groundwater Extraction System, ARCO Station 2133, <br /> Stockton, California <br /> Dear Mr Christie <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 Dnve in Stockton, California Listed below is a summary of activities <br /> iand discharge of groundwater at the site from July 13, 1994, through September 14, 1994 <br /> l This report covers two months of operation since the groundwater extraction system was not <br /> sampled in August (Mr Matt Turner of Brown and Caldwell notified Mr Frank Tucker with <br /> the City of Stockton by 8122/94 telephone message) Table I 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 /> 9/14/94 Collected effluent water sample for laboratory analysis of total petroleum <br /> hydrocarbons, benzene, ethylbenzene, toluene, and xylenes (EPA Methods <br /> 5030/8015 Modified/8020), and total lead <br /> The total volume of water discharged during the period was 542,I88 gallons The average <br /> flow rate during this penod (63 days) was approximately 6 0 gallons per minute The average <br /> daily flow was 8,606 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 to 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 any additional environmental <br /> conditions beyond that described in this report exist at this site <br /> 1273\C0RRESP\12730CT RPT <br /> En rrOrn Pnrar En�rnr er nq Ann Concur[nq Analvr,cal s2rvrces <br /> 1FIb �firHn� 1tF �i � P 0 lioti +119 C191gi , ,.319 <br /> linl <br /> 4++ n1 ? I 910 a 6 2 <br />