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Project No. E6576.001 i�ional Groundwater Sampling/W. Clover F 22 March 1995 <br /> 1 <br /> They had not changed appreciably since the previous measurement two days earlier. The water <br /> level records are given in Appendix B. The groundwater gradient was calculated and is plotted <br /> on Figure 1. The gradient was found to be .0004 N 17E. <br /> L <br /> ANALYTICAL RESULTS OF DRILL AND MW SAMPLES <br /> The soil samples from the bottom of exploratory boring B-2 and the drilling of MW-4, <br /> the grab water sample from B-3, and the water samples from MW-1 through 4 were analyzed <br /> for Motor Oil (EPA 43550/8015) and BTEX (EPA 48020). As can be seen in the test results <br /> Cgiven in Tables 1 and 2, contamination was not detected. In the water samples from MW-I <br /> through 4, trace amounts of toluene and total xylenes were found in MW-2, 3, and 4. This <br /> may be a result of cross-contamination since the wells were sampled in numerical order. A <br /> re-run of the tests obtained similar results. <br /> TABLE 1 - DRILLING AND SAMPLING RESULTS <br /> Soil Samples: m <br /> /�) / 7 <br /> Sample Depth Motor Benzene Toluene Ethyl Total <br /> ID (ft.) Oil Benzene Xylenes <br /> B-3-1 9.0 ND ND ND ND ND <br /> B-3-2 9.5 ND ND ND ND ND <br /> ,i MW-4-1 10.0 ND ND ND ND ND <br /> MW-4-2 15.0 ND ND ND ND ND <br /> W-4-3 20.0 ND ND ND ND ND <br /> MW-4-4 25.0 ND ND ND ND ND <br /> Detection 10 .005 .005 .005 .005 <br /> Limit <br /> Analysis 3550/8015 8020 8020 8020 8020 <br /> Method <br /> ND = not detected <br /> TERRASEARCH, INC. Page 5 <br />