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Table 2 <br /> HISTORIC GROUNDWATER LEVELS AND CHEMICAL ANALYSIS RESULTS <br /> August 2003 Through February 2004 <br /> Former BP Oil 11195 <br /> Date TOC Depth to LPH Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE Comments <br /> Sampled Elevation Water Thickness water in 8260B benzene Xylenes 8021B 8260B <br /> Elevation Elevation <br /> (feet) (feet) (feet) (feet) (feet) (4g11) (µg11) (µg/1) (µg/1) (µg11) (µg11) (µg/1) (µg/1) <br /> CC-WS (Screen Interval in feet:DNA) <br /> 8128/03 -- - -- __ __ __ Inaccessible <br /> 11/24/03 -- 10.76 0.00 __ __ __ 81 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 72 <br /> 2/26/04 -- 10.00 0.00 -- -- - ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 53 <br /> MW-1 (Screen Interval in feet: 8.0-23.0) <br /> 8128103 14.42 11.11 0.00 3.31 -- -- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 2.2 <br /> 11/24/03 14.42 10.85 0.00 3.57 0.26 -- 630 ND<5,0 ND<5.0 ND<5.0 ND<10 -- 760 <br /> 2/26104 14.42 9.95 0.00 4.47 0.90 - 110 ND<1.0 ND<1.0 ND<1.0 ND<2.0 -- 100 <br /> MW-2 (Screen Interval in feet: 8.0-23.0) <br /> 8/28/03 13.75 10.34 0.00 3.41 -- -- 560 ND<2.5 ND<2.5 ND<2.5 ND<5.0 -- 480 <br /> 11/24/03 13.75 10.12 0.00 3.63 0.22 -- 740 ND<5.0 ND<5.0 ND<5.0 ND<10 -- 690 <br /> 2/26/04 13.75 9.33 0.00 4.42 0.79 - 120 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 110 <br /> MW-3 (Screen Interval in feet:8.0-23.0) <br /> 8/28/03 14.37 10.99 0.00 3.38 -- -- 1600 ND<5.0 ND<5.0 ND<5.0 ND<10 -- 1500 <br /> 11/24/03 14.37 10.72 0,00 3.65 0.27 -- 2300 ND<10 ND<10 ND<10 ND<20 - 2600 <br /> 2/26/04 14.37 9.91 0.00 4.46 0.81 -- ND<1000 ND<10 ND<10 ND<10 ND<20 -- 950 <br /> MW-4 (Screen Interval in feet:9.5-24.5) <br /> 8128/03 14.37 10.96 0.00 3.41 -- - 85 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 19 <br /> 11/24/03 14.37 10.66 0.00 3.71 0.30 120 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 3.1 <br /> 2/26/04 14.37 9,87 0.00 4.50 0,79 -- 120 ND<0.50 0.60 ND<0.50 ND<1.0 -- 2.4 <br /> MW-5 (Screen Interval in feet:9.5-24.5) <br /> 8128103 15.40 11.95 0.00 3.45 -- -- 3000 ND<10 ND<10 ND<10 ND<20 -- 2900 <br /> 11/24/03 15.40 11.65 0.00 3.75 0.30 - 2400 ND<13 ND<13 ND<13 ND<25 -- 1900 <br /> 2/26/04 15.40 10.79 0.00 4.61 0.86 -- 1500 ND<13 ND<13 ND<13 ND<25 -- 1800 <br /> MW-6 (Screen Interval in feet:7.0-20.0) <br /> 8/28/03 12.90 9.57 0.00 3.33 -- 920 ND<5.0 ND<5.0 ND<5.0 ND<10 -- 680 <br /> 11195 Page 1 of 3 <br />