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1 <br /> TABLE I <br /> RELATIVE GROUNDWATER ELEVATIONS* <br /> Lammers%ille School District <br /> 16555 West Von Sosten Road, Tracy, California <br /> Depth To Groundwater Relative Groundwater <br /> Relative Elevation <br /> Well No Casing 10/13/94 11/23/94 10/13/94 11/23/94 <br /> EIevation <br />' MW-1 10000 900 911 9100 90S9 <br />' MW-2 9994 90S ---- 9086 ---- <br /> MW-3 10014 860 862 91 54 91 52 <br /> MW-4 10082 9 16 9 IS 91 66 9164 <br /> MW-5 9806 798 ---- 9008 ---- <br /> MW-6 9907 8 13 ---- 9094 ---- <br /> MW-7 9972 866 ---- 91 06 ---- <br /> MW-8 9975 858 860 91 17 91 15 <br /> MW-9 9872 8 37 ---- 90 35 ---- <br /> MW-10 9S56 L S :2:4:�:E ---- 90K ---- <br /> •All measurements In feel sunev rd rlrsc to lop of casing of\111 1 %mh an arbarin ele%auon of 10000 feu <br /> 32 Groundiiater Sample Collection and Analysis <br /> On October 13, 1994, groundwater samples were collected fiom wells MW-1, NIW-5 MW-6, <br /> MW-7, MW-9 and MW-10 Because laboratory analysis of the samples collected in October <br /> indicated little or no liydrocarbon impacted groundwater (see Section 4 0), samples were <br /> collected fiom wells MW-2, MW-3, 111W-4 and MW-8 on November 23, 1994 to assess <br /> whether there was really any significant impact in the area <br /> On both occasions, samples were collected fiom each well using new disposable plastic <br /> bailers Two 40-m1 EPA vials of water NN ere collected from each well and transported in a <br /> chilled container under chain-of-custody to McCampbell Analytical, Inc (MAI) in Pacheco, <br /> California <br /> Each sample was analyzed for TPH as gasoline and BTE&X in accordance with EPA <br /> methods 8015m and 602 respectively Laboratory repoits and chains-of-custody ale <br /> presented in Appendix B <br /> SO"-W i 04 M&AMM Inc 5 <br /> ��'m X�QJLM[M�RSV]LLE QRVI2 9/ <br /> I <br />