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Superior Precision Ana6lrical, /nc. <br />PO Box 1 545 • Martinez California 94553 • 15 10) 229-1590 / fax (5 10) 229-0916 <br />C E R T I F I C A T E O F A N A L Y S I S <br />LABORATORY NO 89201 DATE RECEIVED 07/09/93 <br />CLIENT ACRO INC DATE REPORTED 07/13/93 <br />CLIENT JOB NO 93-707 DATE SAMPLED 07/08/93 <br />ANALYSIS FOR SOLUBLE LEAD <br />by SW -846 Method 6010 <br />Extraction by Tocix.ity Characteristic Lecheate Procedure <br />LAB <br /># Sample Identification <br />--__--------------------- <br />Concentration(mg/L) <br />Soluble Lead <br />-------------- <br />13 <br />SP13 <br />ND <br />14 <br />SP14 <br />ND <br />16 <br />SP16 <br />ND <br />17 <br />SP17 <br />ND <br />mg/L - parts per million (ppm) <br />Method Detection Limit for Lead in Extract 0 5 mg/L <br />QAQC Summary MS/MSD Average Recovery 92% <br />Duplicate RPD 7% <br />Richard Srna, Ph D <br />Laborat ry Manager <br />Certified Laboiaiones <br />