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superior precision Analytical. Inc- <br /> a <br /> nc_ <br /> a825 Arnold Dwo SuEte 1 14 . Martinez California 44553 • (510) 229-1512 / fax (510) 229-1526 <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 88239 DATE RECEIVED . 04/02/93 <br /> CLIENT WESTERN GEO ENGNEERING DATE REPORTED 04/06/93 <br /> CLIENT JOB NO. R603 _r DATE SAMPLED . 04/01/93 <br /> ANALYSIS FOR CADMIUM, CHROMIUM, COPPER, LEAD, ZINC & NICKEL <br /> by EPA SW-846 Method 6010 <br /> LAB Concentration(mg/L) <br /> ## Sample Cadmium Chromium Copper Lead Zinc Nickel <br /> Identification <br /> 1 CONCOULT ND ND ND ND 0 11 ND <br /> mg/L - parts per million (ppm) <br /> Method Detection Limit for Cadmium in Water 0 05 mg/L <br /> Method Detection Limit for Chromium in Water- 0 . 05 mg/L <br /> Method Detection Limit for Copper in Water- 0 1 mg/L <br /> Method Detection Limit for Lead in Water 0 1 mg/L <br /> ethod Detection Limit for Zinc in Water 0 05 mg/L <br /> ethod Detection Limit for Nickel in Water 0 1 mg/L <br /> QAQC Summary MS/MSD Average Recovery • 87/980 <br /> Duplicate RPD < 20 <br /> Richard Srna, Ph D <br /> '4isa'r . <br /> Laboratory Manage <br /> Certified Laboratories <br />