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M Superior PT :ion Ana/ytica/,' /nc. <br /> 1555 Burke, Unit I • San co, California 94124 • (4 15) 647-2081 / fax (4 15) 821-7123 <br /> TOUCHSTONE DEVELOPMENTS Project 8632-1 <br /> Attn: JEFF MONROE Reported 05/28/94 <br /> TOTAL PETROLEUM HYDROCARBONS <br /> Lab # Sample Identification Sampled Analyzed Matrix <br /> 15540- 1 WSP-1 (A-C) 05/20/94 05/23/94 Soil <br /> 15540- 2 UST-H20 05/20/94 05/25/94 Water <br /> 15540- 3 A-W 05/20/94 05/25/94 Soil <br /> 15540- 4 B-W 05/20/94 05/25/94 Soil <br /> 15540- 5 C-W 05/20/94 05/25/94 Soil <br /> 15540- 6 UST-N 05/20/94 05/25/94 Soil <br /> 15540- 7 C-E 05/20/94 05/25/94 Soil <br /> 15540- 8 B-E 05/20/94 05/25/94 Soil <br /> 15540- 9 A-E 05/20/94 05/27/94 Soil <br /> 15540-10 UST-S 05/20/94 05/23/94 Soil <br /> RESULTS OF ANALYSIS <br /> Laboratory Number: 15540- 1 15540- 2 15540- 3 15540- 4 15540- 5 <br /> Gasoline_Range: 14 12000 950 650 200 <br /> Benzene: ND< . 005 1200 2 . 7 0. 39 0. 40 <br /> Toluene: 0. 26 1800 5.4 2 . 3 0. 42 <br /> Ethyl Benzene: 0. 065 250 21 13 4 . 2 <br /> Total Xylenes: 0. 36 1500 37 35 12 <br /> Diesel: *80 NA NA NA NA <br /> Oil and Grease: 560 NA NA NA NA <br /> Concentration: mg/kg ug/L mg/kg mg/kg mg/kg <br /> Laboratory Number: 15540- 6 15540- 7 15540- 8 15540- 9 15540-10 <br /> Gasoline_Range: 510 560 750 50 170 <br /> Benzene: 0. 69 ND<0. 25 1. 1 0. 08 ND<0 . 25 <br /> Toluene: 1.2 1. 3 9 . 3 0. 15 0. 84 <br /> Ethyl Benzene: 12 6.7 13 0. 34 1. 4 <br /> Total Xylenes: 40 36 72 1. 9 1. 4 <br /> Diesel: NA NA NA NA NA <br /> Oil and Grease: NA NA NA NA NA <br /> Concentration: mg/kg mg/kg mg/kg mg/kg mg/kg <br /> Page 1 of 4 <br /> Certified Laboratories <br />