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11 <br /> 4' 5.0 RECOMMENDATIONS <br /> 1' Based on the findings derived from the groundwater monitoring and sampling event conducted in <br /> December 2004, ATC recommends reduction in monitoring frequency and removal from <br /> monitoring program of several wells. The following are the changes to the monitoring and <br /> 1' sampling schedule recommended by ATC: <br /> • Monitoring wells MW-1R, MW-2, MW-4, MW-5, MW-7 and MW-9 be sampled <br /> annually, rather than quarterly and analyzed as follows: <br /> - Monitoring-w11 MW-1R be analyzed for TPH-G and MTBE by EPA Methods <br /> 1' 8015M/80M-; AN g'"�` yYn <br /> - Monitoring well MW-2 be analyzed for TPH-G, MTBE and TBA by EPA Method <br /> ' 8260B; <br /> - Monitoring well MW-4 be analyzed for TPH-G and BTEX by EPA Methods <br /> 8015M/8020; 0�- <br /> - Monitoring well MW-5 be analyzed for TPH-G, MTBE and TBA by EPA Method Yn <br /> ' 8260B; I Monitoring well MW-7 be analyzed for by EPA Method 8020; 1 <br /> - Monitoring well MW-9 be analyzed for rG, MTBE and*by EPA Method <br /> 8260B. �,o �4 <br /> �' • TPH-G, BTEX or fuel oxygenates compounds either haven't been detected or <br /> insignificant amounts , e reported ingroundwater samples collected from monitoring <br /> wells MW-3, MW-6,m T-S, and -10 sampled since 1992 and 2001. Based on the <br /> !' results, ATC recommended that fut a monitoring and sampling of these wells be <br /> discontinued. <br /> i' <br /> ' Quarterly GW Monitoring Report-4th Qtr 2004 <br /> Quik Stop No.132 <br /> Quik Stop Markets,Inc. <br /> ATC Project No.75.62503.3205 <br /> ' January 11,2005 <br /> Page 3 of 4 <br />