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r1 r <br /> B R O W N A N D <br /> C A L D W E L L <br /> February 7, 1996 RECEIVED <br /> Mr Kyle Christie E E B 121996 <br /> ARCO Products Company <br /> Post Office Box 612530 ENVIRONMENTAL HEALTH <br /> San Jose, California 95161 PERMIT/ SERVI�0-2065-01/1 <br /> Subject Fourth Quarter 1995 Groundwater Monitoring and Remediation System <br /> Evaluation Report for ARCO Facility 434, Lodi,California Site Code 1341 <br /> Dear Mr Christie <br /> This report presents water-level measurements and results of groundwater sampling, and <br /> summarizes the progress of remediation operations for the fourth quarter of 1995 at ARCO <br /> Products Company (ARCO) Facility 434 Facility 434 is located at 501 Kettleman Lane in Lodi, <br /> California Fieldwork was performed by EMCON Associates (EMCON) on November 7, 1995 <br /> Remediation system data were collected by Brown and Caldwell personnel This report was <br /> prepared under Work Authorization No 2900-00 <br /> There are six on-site monitoring wells (W-IA, W-2, W-2A, W-2B, W-3, and W-9) and eight <br /> on-site soil vapor extraction wells (VE-1 through VE-8) as shown on Figure 1 In addition, <br /> there are eight off-site mom ton ng wells (W-4, W-5, W-7, W-8, and W-10 through W-12) Well <br /> W-6 was permanently damaged by construction of a Boston Market restaurant The well was <br /> properly abandoned by Boston Market on September 19, 1996 <br /> This quarter all groundwater monitoring wells were sampled except W-2A, W-2B, W-7, W-8, <br /> W-10, W-11, and W-12 These wells are on a semi-annual sampling schedule and are sampled <br /> during the first and third quarters of each year Well W-4 was also not sampled, because it was <br /> dry <br /> Field and Analytical Methods <br /> EMCON personnel measured depth-to-water and product thickness (when present), purged each <br /> well to be sampled, and collected groundwater samples at the site <br /> Before sampling, the wells were purged of a minimum of three well casing volumes, or until <br /> evacuated, using a submersible pump or polyvinyl chloride (PVC) bailer After purging, each <br /> well was sampled using a disposable bailer All groundwater samples were analyzed for <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 only to the <br /> extent of the scope of work which was authorized This report does not guarantee that no additional environmental <br /> contamination beyond that described in this report exists at the site <br /> Environmental En_aineenn(i And Consulting Analvr+cai Services 2065\REP0RT WTH95QT'R DOC <br /> 9616 MICRON, AiC\LI Sim G00 S %( R %k1} \T0 CA 9)8 2 7 2627 <br /> (916) 444 0123 Fti\ (9161 8)6 X277 <br />