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Enter Analytical Labs, Inc. CA FLAP; 222- <br /> i525 Del Rey Avenue, Suite E • Sunnyvale, CA 94086 • (408) 735-1550 • Fax (4 08) 735-1554 <br /> • <br /> i <br /> Clearwater Group, Inc Date 2/1/99 <br /> 520 Third Street, Suite 1.04 Date Received 1125/99 — <br /> Oakland, CA 94607 Project C-178 <br /> IAttn. Ben Ptnk/Doug Gunther PO# <br /> Sampled By Client <br /> Certified Analytical Report <br /> Water Sample Analysis <br /> I Sample ID MW-4 MW-5 MW-6 <br /> Sample Date 1120/99 1/20/99 1/20/99 <br /> Sample Time 10 10 1030 1045 <br /> Lab# G2427 G2428 G2429 <br /> Result DF DLR Result DF DLR Result DF DLR PQL Method <br /> Results in pg/Liter <br /> Analysis Date 1126199 1/26/99 1/27/99 <br /> TPH-Gas 310 10 50 48,000 100 5000 11,000 40 200 50 8015M <br /> MTBE 95 1 0 50 ND 100 500 61 401 20 5 0 8020 <br />' Benzene 57 1 0 050 6,200 100 50 280 40 2 0 050 8020 <br /> Toluene 068 1 0 050 480 100 50 61 40 2 0 050 8020 <br />' Ethyl Benzene 7 0 1 0 050 1,800 100 50 380 40 2 0 0 50 8020 <br /> Xylenes 2 9 1 0 050 3,300 100 50 420 40 20 0 54 8020 <br /> Analysis Date 1/31/99 1/28/99 1/31199 <br />' tert-Butanol ND 10 20 ND i 20 400 ND 1 30 100 20 8240 <br /> MTBE ND 10. 10 ND i 20 20 ND 1 50 5 0 1 0 8240 <br /> Dusopropyi ether ND 10 50 ND i 20 100 ND i 50 251 5 0 8240 <br />' Ethyl-tert-butyl ether ND 10 50 ND i 20 100 ND i 50 25 5q- 0 8240 <br /> tert-Amylmethyl ether ND 10 50, ND 20 100 ND 50 25 S2Y0 <br />' DF=Dilution Fa,tor ND=None Detected abo,e Di-R PQL=Practical Quantitation Limit DLR=Detection Reporting Limit <br /> I Sample diluted due high concentrations of non-target hydrocarbons <br /> 2 Analysis performed by Entech Analytical Labs, Inc (CA FLAP#2224) <br /> 1 <br />' Michelle Lerson, Lab Director <br />' Environmental Analysis Since 1983 <br />