Laserfiche WebLink
Metadata
Document management portal powered by Laserfiche WebLink 9 © 1998-2015 Laserfiche. All rights reserved.
Cyt �% z <br /> R O W N A N D ; � ,_,L iI �I_Ti <br /> C A L D W E L L z, 4 ,; Pr; <br /> December 11, 1995 <br /> Mr Kyle Christie <br /> ARCO Products Company <br /> Post Office Box 612530 <br /> San Jose, California 95161 017-2060-01/1 <br /> Subject Third Quarter 1995 Groundwater Monitoring and Remediation System <br /> Evaluation Report for ARCO Facility 2133, Stockton, California, <br /> Site Code 1021 <br /> Dear Mr Christie <br /> This report presents water-level measurements and results of groundwater sampling <br /> performed during the third quarter of 1995 at ARCO Products Company (ARCO) Facility <br /> 2133, located at 2908 Benjamin Holt Drive in Stockton, California Fieldwork was performed <br /> by EMCON Associates (EMCON) on September 11 and 12, 1995 This report was prepared <br /> under Work 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, PR-1, 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 i 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 water monitonn wells were sampled except E-10 which contained <br /> approximately 31 feet of free product Monitoring wells E-3, E-4, E-5, E-6, E-7, PR-1, <br /> PR-2, BHD-2, -1, MW-2, an MW-3 are sampled on a semi-annual basis (first and third <br /> quarters) All other wells are sampled quarterly <br /> Field and Analytical Methods <br /> EMCON personnel measured depth-to-water and product thickness (when present), purged <br /> each well to be sampled, and collected groundwater samples at the site. Before sampling, the <br /> wells were purged of a minimum of three well casing volumes or until evacuated using a <br /> submersible pump or bailer After purging, each well was sampled using a disposable bailer <br /> Field data sheets and chain-of-custody documentation are included to Exhibit A <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 r <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 Engineering And Consufhng Analytical Services 206MRE.P0RTS\3RD95QTR DOC <br /> 9616 MICRO.4 A%E',LE 5L ITE 600 5ACRAMEVTO, CA 95827 2627 <br /> (916) 444 0123 Fir (916) 856 5277 <br />