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4� <br /> r r <br /> -5.r la*�( CFHIY� L <br /> • Y Y ! <br /> C A L D W E L L ANC, 25 pm (. I0 <br /> August 24, 1995 <br /> Mr Kyle Christie <br /> ARCO Products Company <br /> 2155 South Bascom Avenue, Suite 202 <br /> Campbell, California 95008 017-2060-0111 <br /> Subject Second Quarter 1995 Groundwater Monitoring and Remediation System <br /> Evaluation Report for ARCO Facility 2133, 2908 Benjamin Holt Drive, <br /> Stockton, California, Site Code 1021 <br /> Dear Mr Christie <br /> This report presents water-level measurements and results of groundwater sampling performed <br /> during the second quarter of 1995 at ARCO Products Company (ARCO) Facility 2133, located <br /> at 2908 Benjamin Holt Drive in Stockton, California Fieldwork was performed by EMCON <br /> Associates (EMCON) on June 1 and 2, 1995 This report was prepared under Work <br /> Authorization No 8878-00 <br /> There are eleven on-site groundwater monitoring wells (E-2 through E-6, E-9 through E-12, <br /> MW-1, and MW-2), nine off-site groundwater monitoring wells (E-7, E-8, PRA, PR-2, <br /> BHD-1, BHD-2, and MW-3 through MW-5) and one on-site groundwater extraction well (R) <br /> as shown on Figure 1 In addition, there are twelve soil vapor extraction wells (V-1 through <br /> V-12) and nine air sparging wells (S-1 through S-9) on-site Wells V-9/S-7 and V-10/S-8 are <br /> constructed as dual-completion wells <br /> This quarter, all groundwater monitoring wells were sampled except E-6, E-10, and MW-2 <br /> Wells E-6 and MW-2 are tied into the site remediation system and are under a vacuum, <br /> therefore they were not accessed by EMCON personnel Well E-10 was not sampled because <br /> it contained approximately 2 74 feet of free product A discussion of the source of the free <br /> product is included below <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 1t 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 to this report exists at lite site <br /> FnvironmenfalEngineering Arid Consulting Analytical Services <br /> , <br /> 9616 M1ceo% AtiE`UE $41TE 600 S{cR;%tE�ro Ca 9)327 262 0604ZEP0RTSQND95QT1Z RPT <br /> {916} 444 0[2 3 Far (916) 8)6 3277 <br />