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October 15,2014 <br /> Ms.Cori Condon <br /> Page 2 of 5 <br /> Reference: Addendum to Data Gap Assessment Work Plan <br /> Table 1: List of Wells to be Decommissioned <br /> Screen <br /> Well ID Zone Top Bottom Justification <br /> (ft bgs) (ft bgs) <br /> AMW-10 A 17 32 No longer necessary <br /> AMW-12 A 17 32 No longer necessary <br /> CMW-1 A & B 30 50 Cross-screened; No longer necessary <br /> CMW-2 A 30 50 Screened in mostly clay between A and B; No <br /> longer necessary <br /> CMW-3 A & B 30 50 Cross-screened; No longer necessary <br /> SLMW-1 A & B 26 46 Cross-screened; No longer necessary <br /> SLMW-7S B & C 55 63 Cross-screened;installed in tank pit; No <br /> longer necessary <br /> Screen not at top of C zone, nested with <br /> SLMW-7D C 80 85 SLMW-7S, screen spans clay, in tank pit; Being <br /> replaced <br /> SMW-1 A & B 26 46 Cross-screened; No longer necessary <br /> SMW-4 A & B 25 45 Cross-screened; Being replaced <br /> SMW-5 A& B 20 45 Cross-screened; No longer necessary <br /> SMW-6 A & B 25 50 Cross-screened; No longer necessary <br /> SMW-9 A & B 29.5 49.5 Cross-screened; No longer necessary <br /> SMW-10 A & B 29.5 49.5 Cross-screened; No longer necessary <br /> SMW-11 A& B 29.5 49.5 Cross-screened; Being replaced <br /> SMW-13 A & B 28.5 48.5 Cross-screened; No longer necessary <br /> SMW-17 A & B 29.5 49.5 Cross-screened; No longer necessary <br /> As indicated above and requested in the CVRWQCB's September 17, 2014 letter, the wells to be <br /> decommissioned will be sampled prior to being destroyed. Analysis of the collected groundwater <br /> samples will be submitted to Kiff Analytical, LLC of Davis, California for analysis of total petroleum <br /> hydrocarbon as gasoline, benzene, toluene, ethylbenzene, total xylenes, methyl ted-butyl ether, <br /> and Cert-butyl alcohol by Environmental Protection Agency Method 82608. <br /> ons an o onngs <br /> T <br /> S , <br /> S <br /> Design with community in mind <br />