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QUALITY. CONTROL REPOR- <br /> Laboratory Control Sample <br /> Metals <br /> LP: 11439 Instrument #: PE5100 <br /> Date of Analysis : 04/03/95° Spike Sample ID: LCSS <br /> Date of Digestion: 03/27/95 Spike ID Code : W4-8309 <br /> Batch #: 950327-5404 Matrix: Soil Units : m K <br /> (a) (b) (c) (d) (e) (f) (g) <br /> SAMPLE <br /> SAMPLE DUP. ACCEPTANCE <br /> + + SPIKE LIMITS <br /> SAMPLE SPIKE SPIKE SPIKE SPIKE DUP. RPD <br /> METALS CONC. CONC. CONC. REC.% CONC REC.% % REC% RPD <br /> As 0 2.0 1.6 8o NA NA NA 75 - 125 <20 <br /> Se 0 0.50 0.44 88 NA NA NA 75- 125 <20 <br /> TI 0 2.5 2.1 82 NA NA NA 75 - 125 <20 <br /> Spike Recovery — d — ( (c-a)/b) x 100 <br /> Spike Duplicate Recovery — f — ((e-a)/b) x 100 <br /> Relative Percent Difference — g — ( ic-el )/((c+e) x . 5) x 100 <br /> a Date of Analysis applies to Arsenic and Selenium only. Thallium was analyzed on 04/01/95. <br /> MBT Environmental 111"C Master Builders Technologo,; <br /> Laboratories ��'I�� <br /> (CN11439) <br />