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M <br /> Ta 1 • <br /> Groundwater Elevations and Analytical Data <br /> Parkinson's Arco <br /> 3250 West Hammer Lane <br /> Stockton,California <br /> Top of <br /> Casing Depth to Groundwater TPH as Ethyl <br /> Sample Date Elevation Water Elevation Gasoline Benzene Toluene benzene Xylenes MtBE DIPE ETBE TAME TBA 1,2 DCA <br /> Identification Sampled (MSL) feet b s (MSL) ((us/[) (ug/1) u 1I) (u 11) u 1E (ug") (ug/1) (u11)( u A (u 11) EDB(u 1I) (ug/1 <br /> MW-2 09121100 474 1323 -849 529 <0 5 <05 <05 <05 5,830 <2 0 <20 45 1,150 <br /> 01119/01 1323 849 <500 <50 <50 <50 <50 21,600 <20 <20 168 2,520 <br /> 04/23/01 1227 753 <500 <50 <50 <5 0 <5 0 10,400 <2 0 <20 675 697 <br /> 07/27101 1345 -871 190 <0 5 20 41 29 4,800 <100 <100 <100 <10,000 <br /> 11101/01 1445 -971 <50 <0 5 <0 5 <0 5 18 3100 <1 0 <10 21 <100 <br /> 01128/02 1293 -819 <50 <0 5 <0 5 <0 5 <05 3 300 <100 <100 <100 <1,000 <br /> 04/23/02 1302 -828 <50 <0 3 <0 3 <0 3 <0 6 3,700 <50 <50 30 65,000 <br /> 07/29/02 565111 1402 -837 <50 <0 3 <0 3 <0 3 <0 6 4,000 <50 <50 34 61 <br /> 10107102 1488 -923 99A <030 <0 30 <0 30 <0 60 5,000 <5 0 <50 43 <50 <br /> 01102103 1431 -866 <50 096 <0 30 <0 30 <0 60 4,400 <5 0 <50 <50 <50 <br /> 04/03103 1402 837 <50 34 <0 50 <0 50 <10 3,600 <50 <5 0 25 <50 <br /> 07/21103 1469 904 <50 <0 50 <0 50 <0 50 <1 0 4,200 <50 <5 0 37 <50 <br /> 10/13/03 1542 977 <50 <0 50 <0 50 <0 50 <10 4,700 <50 <50 <50 <500 <50 <50 <br /> 01/12/04 1478 913 <50 <0 50 <0 50 <050 <10 1,700 <50 <50 12 <100 <0 50 <0 50 <br /> 06/22104 1453 -888 <50 <050 <0 50 <0 50 <10 2,000 <25 <25 <25 <250 <25 <25 <br /> 08/12104 1504 -939 <50 <050 <0 50 <0 50 <10 2 500 <0 50 <0 50 16 120 <0 50 <0 50 <br /> 10/21/04 1519 -954 <50 <0 50 <0 50 <0 50 00 1 100 <0 50 <0 50 10 880 <0 50 <050 <br /> 01117105 1410 845 <50 <0 50 <0 50 <0 50 <10 1500 <25 <25 160 330 <25 <25 <br /> 04118105 1278 713 65 <0 50 <050 <0 50 <1 0 470 <50 <50 <5 0 170 <5 0 <50 <br /> 07118105 1346 781 <50 <0 50 <050 <0 50 <1 0 720 <25 <25 <25 <250 <25 <25 <br /> 10117/05 1432 867 <50 <0 50 <0 50 <050 <1 0 1200 <0 50 <0 50 50 <50 <0 50 <0 50 <br /> 01116/06 1313 748 <50 <0 50 <0 50 <050 <1 0 690 <0 50 <0 50 43 <50 <0 50 <0 50 <br /> Shaw Environmental,Inc <br /> N 1TechPub18800401A Arco12006 Rpis1Q111006 tableTable 1 Page 2 of 4 Rev 0 41512006 <br />