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COLUMBIA ANALYTICAL SERVICES, INC <br /> Analytical Report <br /> Client EMCON Associates Date Received 10/15/93 <br /> Project DSS Construction/#2481-100 01 Date WET Performed 10/25/93 <br /> Sample Matrix Soil Date Analyzed 10/28/93 <br /> Work Order No K936102S <br /> Persistent and Bioaccumulative Toxic Substances <br /> California Waste Extraction Test (WET)• <br /> Metals <br /> mg/L (ppm) in WET Extract <br /> Sample Name P-1 P-2 <br /> Lab Code K6102-1 K6102-2 <br /> EPA <br /> Analyte Method MRL STLC� <br /> Chromium 3010/6010 005 560 ND ND <br /> Lead 3010/6010 0 5 5 O ND ND <br /> Nickel 3010/6010 02 20 ND ND <br /> ° State of California Code of Regulations, Title 22, Division 4, Chapter 30, Sections 66699 <br /> and 66700 The method was modified by using DI Water for extraction <br /> STLC Soluble Threshold Limit Concentration <br /> Approved b 4 Date f I <br /> 0000 i <br />