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Tat <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station No 6100 <br /> 25775 S Patterson Pas, Tracy, CA <br /> Measured Calc <br /> TOC Depth to Ethyl- <br /> Well No Date Pl Elevation Water ProductThl GW GRO Benzene Toluene benzene Xylenes MTBE DO <br /> NP (ft MSL) (ft BGS) ckness Elev WILT (pg L) (jig/L) WIL) WIL) (IJ9,L) (mg1L) PN Comments <br /> (feet) (ft MSL) <br /> MW-6 09/06/2004 28864 6271 22593 Well inaccessible <br /> 12121/2004 NP 6270 22594 <br /> 03/14/2005 Not Sampled Dry <br /> 06/2112005 Not Sampled Insufficient Water <br /> 09/19/2005 6267 22597 Not Sampled <br /> 12!1912005 6284 22580 Not Sampled <br /> 03/2812006 6269 22595 Not Sampled <br /> 0612612006 6271 22593 Not Sampled <br /> MW 7 09/06/2004 28837 9416 19421 Well inaccessible <br /> 12/2112004 9415 19422 <br /> 03114/2005 - Not Sampled <br /> 06121/2005 <br /> - - - - - - - - - Not Sampled Dry <br /> 09!11912005 9410 19427 Not Sampled <br /> 1211912005 94 15 19422 Not Sampled <br /> 03/2812006 9417 19420 Not Sampled <br /> 06126/2006 9420 19417 - - Not Sampled <br /> MW 8 09/06/2004 28977 5880 23097 Well inacceas6e <br /> 12/2112004 5878 23099 <br /> 03/1412005 P 5527 23450 - - - - - - 020 76 <br /> 06/2112005 P 5280 23697 42 000 470 580 <50 19 000 290 J 45 84 <br /> 09119=05 P 5390 23587 50 000 36 58 <25 3 400 <25 1 3 72 <br /> 12/1912005 P 5703 23274 240 000 290 1 400 560 24 000 <250 20 69 <br /> 03/2812006 P 5160 23817 <25 000 <250 <250 <250 680 <250 66 74 <br /> 06126/2006 6862 231 15 - Not Sampled <br /> MW-9 09/06/2004 28956 9182 19774 - - - - Well inaccessible <br /> 12/21/2004 9182 19774 - <br /> 03114/2005 - Not Sampled Dry <br /> 06/2112005 - _ - _ - - Not Sampled Dry <br /> 0 9/1 91200 5 P 8540 20416 2,200 J 47J 270 <50 550 <50 31 7 3 <br /> 12/19/2005 9114 19842 - - - - Not Sampled <br /> 03/2812006 P 9000 19956 3 300 200 290 27 1200 <50 80 74 <br /> 06/26/2006 9188 19768 - - Not Sampled <br /> MW-10 09/0612004 - 28893 10350 18543 - - - - - Well inaccessible <br /> 12121/2004 P 10345 18548 44 000 J 3 900 4 500 440 8 700 <100 47 7 5 <br /> 0311412005 P 10340 18553 - - - - - 080 76 <br /> 06121/2005 P 10325 18568 33 000 3 800 2 400 220 5 500 <50 21 74 <br /> 09119/2005 P 10306 18587 40 000 3 900 2 900 240 6 000 <25 10 69 <br /> 12/1912005 P 10325 18568 31 000 2 700 1 100 140 3 900 <25 10 69 <br /> 0312812006 P 10270 18623 14 000 2 600 490 72 1 300 <25 26 69 <br /> 06/26/2006 P 1 10266 186 27 1 16,000 3,500 610 91 1,600 <5 0 040 77 <br /> 6100-Table 1 Page 2 of 8 SECOR <br />