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a <br /> 7. <br /> TABLE 1 <br /> (;r sund Water iacvalion <br /> Depth to Ground Water <br /> Top of Riser p Elcvati(-In L <br /> MonitoringWater f�t <br /> �� I7:Uc p;lcva[ion'� ft <br /> 50.50 -19.72 <br /> MW-20 <br /> 021091r71 30.78 49.56 -18.78 <br /> 04/11191 -19.85 <br /> 30.19 50.W _19.110 <br /> MW-34 02!09193 49.19 <br /> 04/11/91 -19.59 <br /> 31.33 50.97 -18.70 <br /> MW-35 p210 NI 50.08 <br /> 04111!93 <br /> 50.20 -19.60 <br /> MW-36 <br /> 02109/91 30.60 49.32 -18.72 <br /> 0411101 <br /> uRelativc to mean sea level based on DuPont Environmental Remediation Services survey. <br /> TABLE 2 <br /> Ground Water Sample Analytical Results <br /> Parts per billion (ppb) <br /> Ethyl- <br /> TP <br /> Monitoring hcnzene X�leneIs a <br /> 1><<te Be^ane Toluene _--• <br /> Well <0.5 <0.5 99 <br /> 3.4 <0.5 <br /> MW-20 10/040 <50 <br /> 02105/910 <0.5 1.5 <0.5 3.7 <br /> 04/11/91 140 <br /> <0.5 <0.5 4.1 <br /> 020191 1.8 0.7 3.6 260 <br /> 04/11/91 <br /> MW-3412.0 1.13 <br /> 0 Il 98 <br /> 1. <br /> MW-35 02108/9 1 14 12.0 2.6 41 280 <br /> 041111!91 <0.5 <50 <br /> <0.5 <0.5 <br /> Oryrog/9I <0.5 <0.5 3.1 <50 <br /> MW-36 <0.5 2.0 <br /> 04111191 <br /> aTotal petroleum hydrocarbons detected as gasoline. <br /> hFrom DuPont Envin Services,Third Quarter 1990 Quarterly Monitoring Report. <br /> ronmental Remediatio <br /> rNot sampled. <br /> I <br /> I <br />