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1 <br /> Table 1: Current and Past Depth to Groundwater <br /> Depth to Water (ft bgs) <br /> Well No. DMW-1 DMW-2 DMW-3 DMW-4 DMW-5 Average <br /> 09/06/96 5226 5269 5288 5247 52 95 5265 <br /> 01/16/97 4871 4881 4910 4870 4910 4888 <br /> 0 7/11197 4623 4667 4682 4646 4691 4662 <br /> ft bgs — feet below ground surface <br /> 2.4 GROUNDWATER ANALYTICAL RESULTS <br /> The TPH-d results reported for groundwater samples are presented in Table 2 TPH-d <br /> was reported as not detected In each of the groundwater samples, at a detection limit of 50 <br /> micrograms per liter (ugIL) TPH-d was also reported as not detected for the sample DMW-10, <br /> the duplicate sample from monitoring well DMW-1 An evaluation of the laboratory report by <br /> the Dames & Moore Quality Assurance/Quality Control (QA/QC) group concluded that the <br /> analytical data are acceptable See Appendix C for a copy of the laboratory report and QA/QC <br /> report <br /> Table 2: Reported TPH-d Analysis of Groundwater Samples <br /> Field Parameters <br /> Electrical Laboratory <br /> Conductivity Temperature Analysis <br /> Well No pH (µinhoslcm) (0F) TPH-d(E.iglL*) <br /> DMW-1 734 839 710 ND <br /> DMW-2 751 965 71 8 ND <br /> DMW-3 789 1,094 71 8 ND <br /> DMW-4 712 1,110 71 4 ND <br />' DMW-5 718 912 71 5 ND <br /> DMW-10 (duplicate ND <br /> sample of DMW-1 <br /> *The detection limit for TPH-d is 50µg/L <br /> ND ; not detected <br /> 3 R 15AC044MISC9708 05 WPD <br />' DAMES &MOORE <br />