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CH ROMALAB, INC. <br /> 5DAY5 TURNAROUND <br /> Environmenial Laboratory(1094) <br />' May 29, 1992 ChromaLab File No. : 0592220 <br /> ARTESIAN ENVIRONMENTAL CONSULTANTS <br /> Attn: Jim Jacobs <br /> RE: Four rush water samples for Gas/BTEX and Lead analyses <br /> Project Name: NOWELLINI CONSTRUCTION <br /> Project Number: 040-01-03 <br />' Date Sampled: May 15, 1992 Date Submitted: May 26, 1992 <br /> Date Extracted: May 28 , 1992 Date Analyzed: May 28 , 1992 <br />' RESULTS: <br /> Ethyl Total ' <br /> Sample Gasoline Benzene Toluene Benzene Xylenes Lead <br />' I . D. L L L L L m L <br /> MV','-3AQ 11000 5400 720 N. D. * 960 N. D. <br /> MW-4AQ 15000 4600 2700 60 1700 N. D. <br /> MW-5AQ N.D. N.D. N.D. N. D. N. D. N.D. <br /> MW-6AQ 6500 570 29 N. D. 89 N.D. <br /> IWLANK N.D. N. D. N.D. N. D. N. D. N. D. <br /> SPIKE RECOVERY 91% 106% 108% 105% 102% 92% <br /> DUP. SPIKE RECOVERY 100% 117% 112% 112% 101% 92% <br /> DETECTION LIMIT 50 0. 5 0. 5 0. 5 0 . 5 0. 05 <br /> METHOD OF ANALYSIS 5030/8015 602 602 602 602 3010/7420 <br /> *Detection limit = 25 Ag/L due to dilution needed. <br /> ChromaLab, Inc. <br /> Yau Tam iric �Tam <br />' Analytical Chemist Laboratory Director <br /> 1 <br /> I <br /> 2239 Omega Road, #1 • San Ramon, California 94583 <br /> 510/831-1788 • Facsimile 510/831-8798 <br /> Federal ID #68-0140157 <br />