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CHROMALAB, INC . <br /> 5 DAYS TURNAROUNDEnvironmental Laboratory(1094) <br /> December 31, 1992 ChromaLab File No. : 1292253 <br /> MITTELHAUSER CORPORATION <br /> Attn: Steven W. Pierce <br /> RE: Eleven soil samples for Gasoline and BTEX analysis <br /> ProDect Name: UNOCAL #6348 - Tracy <br /> Pro3ect Number: P-2168-2 <br /> Date Sampled: Dec. 23 , 1992 Date Submitted: Dec. 23 , 1992 <br /> Date Analyzed: Dec. 28 , 1992 <br /> RESULTS: <br /> Ethyl Total <br /> Sample Gasoline Benzene Toluene Benzene Xylenes <br /> I.D. --_- (ms1Kc7) (ua/Kq) (fist/Ka) (ug1Kg) (u_g/Xc;_)_ <br /> PL-1 2.410 150 N.D. * 3300 15000 <br /> PL-2 40 89 N.D. ** 830 1900 <br /> PL-3 3500 N.D.*** 22000 53000 290000 <br />. PL-4 57 96 250 1500 7600 <br /> PL-5 N.D. N.D. N.D. N.D. N.D. <br /> PL-6 N.D. N.D. N.D. N.D. N.D. <br /> PL-7 43 70 700 440 5900 <br /> TP-1A 1200 3000 N.D. **** 31000 94000 <br /> TP-1B 180 200 970 4300 16000 <br /> TP-2A 11 37 N.D. 310 290 <br /> TP-2B N.D. 7 .5 N.D. 21 N.D. <br /> BLANK N.D. N.D. N.D. N.D. N.D. <br /> SPIKE RECOVERY 104% 102% 106% 107% 107% <br /> DUP SPIKE RECOVERY ---- 99% 104% 106% 107% <br /> DETECTION LIMIT 1 . 0 5 . 0 5 . 0 5. 0 5 . 0 <br /> METHOD OF ANALYSIS 5030/8015 8020 8020 8020 8020 <br /> * Detection Limit = 100 Ag/Kg due to dilution needed. <br /> ** Detection Limit = 50 gg/Kg due to dilution needed. <br /> *** Detection Limit = 1000 pg/Kg due to dilution needed. <br /> **** Detection Limit = 450 Ag/Kg due to dilution needed. <br /> ChromaLab, I <br /> Billy ch Eric Tam <br />• Analytical Chemist Laboratory Director <br /> cc <br /> 2239 Omega Road,#1 • San Ramon, California 94583 <br /> (5101831-1788 • Facsimile (510) 831-8798 <br /> Federal 10 #68-0140157 <br />