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i <br /> ENVIRONMENTAL LABORATORIES REPORT OF LABORATORY ANALYSIS <br /> Bill Howell QUALITY CONTROL DATA December 21, 1994 <br /> Page 16 PACE Project Number: 441212503 <br /> Client Reference: BP Site #11107/10-151-03/001 <br /> PURGEABLE FUELS AND AROMATICS <br /> Batch: 70 37141 <br /> Samples: 70 0452880, 70 0452899, 70 0452902 <br /> METHOD BLANK: <br /> Method <br /> Parameter Units MDLBlank <br /> TOTAL FUEL HYDROCARBONS, (LIGHT) : - <br /> Purgeable Fuels, as Gasoline (EPA 8015M ug/L 50 ND <br /> PURGEABLE AROMATICS (BTXE BY EPA 8020M) - <br /> Benzene ug/L 0.5 ND <br /> Toluene ug/L 0.5 ND <br /> Ethylbenzene ug/L 0.5 ND <br /> Xylenes, Total ug/L 0.5 ND <br /> SPIKE AND SPIKE DUPLICATE: <br /> Spike <br /> 700452872 Spike Dupl <br /> Parameter Units MDL S-4 Spike Recv Recv RPD <br /> Benzene ug/L 0.5 ND 100 124% 112% 10% <br /> Toluene ug/L 0.5 ND 100 121% 108% 11% <br /> Ethylbenzene ug/L 0.5 ND 100 116% 103% 12% <br /> Xylenes, Total ug/L 0.5 ND 300 122% 108% 12% <br /> LABORATORY CONTROL SAMPLE AND CONTROL SAMPLE DUPLICATE: <br /> Reference Dupl <br /> Parameter Units MDL Value Recv Recv RPD <br /> Benzene ug/L 0.5 100 97% 97% 0% <br /> Toluene ug/L 0.5 100 93% 94% 1% <br /> Ethylbenzene ug/L 0.5 100 88% 89% 1% <br /> Xylenes , Total ug/L 0.5 300 92% 94%' 2% <br /> 11 Oigitai Drive An Equal Opportunity Employer <br /> Novato,CA 94949 <br /> TEL:415-883-6100 <br /> FAX:415-883-2673 <br />