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' CASTLE ANALYTICAL LABORATORY <br /> • Environmental Testing Seances 2333 Shuttle Drive Atwater, CA 95301 Phone (209) 384-2930 <br />' Certificate#2079 Fax (209)384-1507 <br /> Advanced GeoEnvlronmental, Inc Client Project 10 Nomellini Const Sampled 4-19-00 <br />' of Northern California Reference Number 2972 Received 4-20-00 <br /> 4005 North Wilson Way Sample Description Water Extracted 4-25-00 <br /> Stockton CA 95205 Sample Prep/Analysis Method EPA 503018015, 8020 Analyzed 4-25-00 <br /> Attn Tim Cuellar Lab Numbers 2972-1W, 2W,3W,4W 5W Reported 5-1-00 <br /> 1 <br /> TOTAL PETROLEUM HYDROCARBONS -GASOLINE <br />' WITH BTEX DISTINCTION <br />' ANALYTE REPORTING LIMIT SAMPLE ID SAMPLE 10 SAMPLE ID SAMPLE ID SAMPLE ID <br /> MW 1 MW 2 MW 3 MW 4 MW 5 <br /> 4-19-00 4-19-00 4-19-00 4-19-00 4-19-00 <br />' (uglL) (uglL) (uglL) (ug/L) (ug/L) (uglL) <br /> MTBE 050 ND 650 ND ND 63 <br /> BENZENE 050 120 8600 8200 1300 ND <br />' TOLUENE 050 ND 170 2200 ND ND <br />' ETHYL BENZENE 0 50 69 780 670 310 ND <br /> TOTAL XYLENES 050 77 390 3300 72 ND <br />' GASOLINE RANGE <br /> HYDROCARBONS 50 2600 21000 37000 7300 ND <br />' Report Limit Multiplication Factor 50 250 500 25 1 <br /> 1 <br /> Surrogate%Recovery FID 103%/PID 1046 FID 10861PID 1066 FID 103%lPID 102% FID 1W%4 PID 111% FM1D 445%1 PID 852% <br /> Instrument ID VAR-GC1 VAR-GC1 VAR-GC1 VAR-GC1 VAR-GC1 <br />' Analytes reported as ND were not detected or below the Practical Quantitation Limit <br /> Practical Quantitation Limit= Reporting Limit x Report Limit Multiplication Factor <br /> ANALYST / APPROVED B) <br /> an J Cone J mes C PhNips <br /> nvimnmental Lab Director <br />