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I <br /> ' JJW GEOSCIENCES - Project #8013-01 <br /> Valley Showcase, Stockton, California <br /> eg <br /> TEG PROJECT#11206C <br /> BTEX& MTBE EPA 8020A & TPH EPA mod8015 ANALYSES OF WATERS <br /> SAMPLE DATE DATE C5-C11 MTBE BENZENE TOLUENE ETHYLBNZ XYLENES <br /> NUMBER SAMPLE ANALYZED u /L u /L u /L u /L u /L u /L <br /> BLANK 12/0501 nd nd nd nd nd nd <br /> MW-1 11/27/01 2/001 nd nd nd nd nd nd <br /> ' MW-2 11/27/01 12105/01 130 nd 4.1 2. 1 9.3 48 <br /> MW-3 11/27/01 12/05/01 nd nd nd nd nd nd <br /> ' MW-4 11/27/01 12/05/01 nd nd nd nd nd nd <br /> MW-5 11/27/01 12105/01 nd nd 0.62 nd nd nd <br /> REPORTING LIMITS 50 1.0 0.5 0.5 0.5 0.5 <br /> 'nd' INDICATES NOT DETECTED AT LISTED REPORTING LIMITS. <br /> 'C5-C11' INDICATES GASOLINE RANGE. <br /> II <br /> 1 <br />' QA/QC DATA -LCS/L CSD- WATERS <br /> DATE GASOLINE MTBE BENZENE TOLUENE ETHYLBNZ XYLENES <br /> ANALYZED ug/L ug/L ug/L ug/L ug/L ug/L <br /> Spiked Conc. 12/05/01 200 5.00 5.00 5.00 5.00 15.00 <br /> Measured Conc. 213 4.00 5.17 4.75 4.76 15.96 <br /> Recovery 106.5% 80.0°0/ 103.4% 95.0% 95.2% 106.4% <br />' Spiked Conc. 12/05/01 200 5.00 5.00 5.00 5.00 15.00 <br /> Measured Conc. 196 4.05 4.90 4.43 4.56 14.72 <br /> Recovery 98.0% 81.0% 98.0% 88.6% 91.2% 98.1% <br /> RPD 8.4% 1.2% 5.4% 7.0% 4.3% 8.1% <br />' ACCEPTABLE RPD LIMIT= 15% <br /> ANALYSES PERFORMED IN TEG-Northern Californias DHS CERTIFIED LAB <br /> ANALYSES PERFORMED BY., Mr. Henry Wilkinson <br />' 11350 Monier Park Place, Rancho Cordova, CA 95742 Phone: (916) 853-8010 Fax: (916) 853-8020 <br />