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PNt � p g p p R 6 T E c1ces <br /> REPORT OF LABORATORY ANALYSIS <br /> THE ASSURANCE OF OUWTM <br /> John Bower QUALITY CONTROL DATA July 02 1992 <br /> Page 9 PACE Project Number- 420625505 <br /> Client Reference 440 Charter Way, Stockton <br /> GASOLINE AND AROMATICS IN AIR <br /> Batch 70 13544 <br /> Samples- 70 0170516 <br /> METHOD BLANK <br /> Method <br /> Parameter Units MDL Blank <br /> Purgeable Fuels, as Gasoline (EPA 8015M ug/L 50 ND <br /> Volatile Aromatic Compounds (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 /> LABORATORY CONTROL SAMPLE AND CONTROL SAMPLE DUPLICATE <br /> Reference Dupl <br /> ,larameter Units MDL Value Recv Recv RPD <br /> JWgeable Fuels, as Gasoline (EPA 8015M ug/L 50 242 951 98% 6% <br /> - Benzene ug/L 0 5 30 8 104% 106% 1% <br /> - Toluene ug/L 0 5 36 8 105% 108% 2% <br /> - Ethylbenzene ug/L 0 5 44 9 106% 111% 4% <br /> - Xylenes, Total ug/L 0 5 130 101% 113% 11% <br /> MDL Method Detection Limit <br /> RPD Relative Percent Difference <br /> 11 Digital Dnve Offices Serving Minneapolis Minnesota Charlotte North Carolina An Equal Opportunity Employer <br /> Novato CA 94949 Tampa Florida Asheville North Carolina <br /> TEL 415 883 6100 Iowa City Iowa New York New York <br /> FAX 415 863 2673 San Francisco California Pittsburgh Pennsylvania <br /> Kansas City Missoun Denver Colorado <br /> Inc hqr'-,n (`pi;-1, <br />