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Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station No 6020 <br /> 1711 E Yosemite Avenue, Manteca, CA <br /> TOC Depth to Water Level Ethyl-A Total <br /> Well Date P! Elevation Water Elevation TPHg TPNd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg1L) (yg/L) (Ng/L) (Ng/L) (Ng/L) (Yg1L) (Ng/L) (mg1L) Comments <br /> MW 5 - 2/15/2001 4361 2088 2273 <50 <05 1 <0 5 <0 5 1 <0 5 <2 5 <br /> + - <br /> 1 6/1/2001 4361 21 22 2239 <50_ - <05 } < �0 5 <0 5 I - <0 5- — <25-- <br /> 9/11/2001 <br /> 259/11/2001 4361 I 2248 _ 21 13 <50 + 1 <05 + <0 5 <0 5� <0 5 --— <2 5 2 5 - <br /> 12/20/2001 4361 _ 2225 _2136 <50 <05 <0 5 <05 <0 5 <2 51<2 0* 21 <br /> 3!2012002 4361 21 02 2259 <50 -- <05 <0 5 <D 5 <0 5 <2 51<0 5* 35 <br /> 6/20/2002 P 4361 2195 21 66 <50 { - <0 5 <0 5 <0 5 <0 5 <0 50*� 4— <br /> 9/24/2002 P 4361 i 2257 21 04 <50 T <05 i <0 5 <0 5_v <0 5 <0 50* - NA <br /> 11/27/2002 P 4361 21 91 2170 - -- <50 <0 5 <05 <0 5 <0 5 - - <0 50* - 56 -- -� <br /> 7 <br /> 02/1712003 NP 4361 2207 21 54 <50 <0 50 <0 50 <0 50 <0 50 <0 50* T 43 -� <br /> 04/28/2003 P 4361 2223 21 38 <50 <0 50 <0 50 <0 50 <0 50 <0 50* --53- <br /> '07128/2003 <br /> 3'07/2812003 P 4361 ' 2314 2047 <50 <0 50 <0 50 <0 50 i <0 50 <0 50* 46 <br /> 11/26/2003 P 4361 2319 2042 <50 -- <0 50 <0 50 <0 50 <0 50 <0 50* 4 8 <br /> 02/16/2004 P 4361 2351 2010 <50 ' <0 50 <0 50 <0 50 <0 50 <0 50* 4 5 <br /> 05/26/2004 P 4361 2358 20 03 <50 <050 <0 50 <0 50 <0 50 <0 50* I 51 <br /> 08/05/2004 P 4361 2478 1883 <50 <050 <0 50 <0 50 1 <0 50 <0 50* 4 5 <br /> 11/12/2004 P 4361 2331 2030 <50 <0 50 <0 50 <0 50 <0 50 <0 50* i 529 <br /> 102/11/2005 P 4361 2248 21 13 <50 -- <0 50 <0 50 <0 50 <0 50 <0 50* 3 3 <br /> 05/31/2005 P 4361 2199 21 62 <50 <0 50 <0 50 <0 50 <0 50 <0 50* 4 0 <br /> 10811812005 P 4361 2204 21 57 <50 j <0 50 <0 50 <0 50 <0 50 <0 50* 54 1 <br /> 12/08/2005 P 4361 2098-1 2263 <50 <0 50 <0 50 <0 50 <0 50 <0 50* 51 <br /> 01125120061 P 1 4361 1972 2389 <50 -- I <0 50 <o 50 <0 50 <0 50 <0 50 f 46 <br /> MW-6 2/15/2001 4365 2092 2273 <500 ` <5 <5 <5 E <5 1,260 -- <br /> 1611!2001 4365 2127 2238 <500 <5 <5 <5 ` <5 4,200 } - <br /> 9/11/2001 4365 2251 21 14 <5 000 <50 <50 <50 <50 3 800 08 <br /> 12/20/2001 4365 2232 21 33 <50 - <0 5 <05 <0 5 <0 5 74/2400 1 3 <br /> a <br /> 3120/2002 -- 4365 21 06 2259 <50 <0 5 <0 5 <0 5 �I <0 5 2701270* 1 12 <br /> 6120/2002 P 43 65 2200 21 65 150 - <0 5 <0 5 <0 5 <0 5 260* 1 5 <br /> 9/24/2002 P 4365 E 2262 21 03 <50 <0 5 <0 5 <0 5 <0 5 770* NA <br /> 11/27/2002 P 4365 21 95 21 70 <5 000 4 <50 <50 <50 <50 2 200* 12 <br /> 02/17/2003 P 4365 2211 2154 <5 000 <50 <50 <50 <50 340* 2 0 <br /> 04/28/2003 P 4366 } 2228 21 37 100 { <0 50 <0 50 <0 50 <0 50 230* 34 <br /> 07/2812D03 P 4365 1 2319 2046 88 R <2 5 <2 5 <2 5 1 <2 5 200* 2 0 <br /> 11/26/2003 P 4365 i 2324 2041 99 R i <0 50 <0 50 <0 50 <0 50 170* i 12 <br /> Report Date February 14,2006 Page 1 of 7 <br />