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Roy 7. Westin, Inc. StocktonLaborator <br /> PURGEABLE PETROLEUM HYDROCARBONS BY MOD 8015 Report Date 11/13/92 11 33 <br /> RFW Batch Number 92115271 Client S. J. MOSQUITO ABATEMENT Work Order. 06778-01-01 Page 1__ <br /> Cust ID MW-4 BLK BLK BS <br /> Sample RFW#- 001 92SVP313-MB1 92SVP313-MB1 <br /> Information Matrix. WATER WATER WATER <br /> D.F 1 .00 1 00 1.00 <br /> Units mg/L mg/L mg/L <br /> aaa-Trifluorotoluene 103 % 108 % NS <br /> Total Petroleum Hydrocarbons 0 050 U 0.050 U 112 <br /> I <br /> U= Analyzed, not detected. JW Present below detection limit B= Present in blank NR= Not requested. NS= Not spiked <br /> %= Percent recovery. D= Diluted out. I= Interference. NA= Not Applicable *= Outside of Advisory limits. <br />