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1 <br /> ROY F. WESTON INC'. <br /> INORGANICS LABORATORY CONTROL STANDARDS REPORT 10/25/90 <br /> SPIKED SPIKED <br /> SAMPLE SITE ID ANALYTE SAMPLE AMOUNT UNITS %RECOU <br /> LCS1 90S023-LCI LEAD, LCS 2520 5000 UG/L 50.3 <br /> i <br /> Lead was analyzed by SW-846 Method 6010 using the <br /> Inductively Coupled Argon Plasma Spectrophotometer. <br />