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PN I C O R P O R A T E D <br /> %Cea' REPORT OF LABORATORY ANALYSIS <br /> THE ASSURANCE OF QUALITY <br /> Robert Spare QUALITY CONTROL DATA November 09, 1993 <br /> Page 3 PACE Project Number: 431101506 <br /> Client Reference: Mark Group 92-11-77103 <br /> _Lead (EPA Method 7421, Furnace AAS) <br /> Batch: 70 26232 <br /> Samples. 70 0184193 <br /> METHOD BLANK: <br /> Method <br /> Parameter Units MDL Blank <br /> Lead (EPA Method 7421, Furnace AAS) mg/L 0 001 ND <br /> LABORATORY CONTROL SAMPLE AND CONTROL SAMPLE DUPLICATE- <br /> Reference Dupl <br /> Parameter Units MDL Value Recv Recv RPD <br /> Lea EPA Method 7421, Furnace AAS) mg/L U-0-01 0 020 10570 1000% 40/. <br /> • <br /> 0 <br /> 11 Digital Drive An Equal Opportunity Employer <br /> Novato CA 94949 <br /> TEL 415 B83 6100 <br /> FAX 415 883 2613 <br />