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Enoineers <br /> Planners <br /> a Economists <br /> Scientists <br /> CASE NARRATIVE y" ! <br /> Metals <br /> 29926 r, <br /> I. Holding Time: <br /> All holding times were met. <br /> II. Analysis: <br /> i <br /> A. Blanks: <br /> All acceptance criteria were met. <br /> B. Calibration: <br /> All acceptance criteria were met. <br /> C. ICP Interference Check Samole: r•., <br /> j All acceptance criteria were met. <br /> D. Spike Sample Analysis: <br /> One of the predigestion spike recoveries for Furnace Lead <br /> did not meet the acceptance criteria. A post digestion <br /> spike was performed which met the 75-125% spike recovery <br /> criteria. All other QA/QC analyses met the acceptance <<� <br /> criteria. <br /> E. Duplicate Sample Analysis: <br /> All acceptance criteria were met. <br /> F. Laboratory ontrol Sample Analysis: <br /> All acceptance criteria were met. % ` <br /> G. ICP Serial Dilution: <br /> Not required for this level QC. <br /> H. Other: <br /> None. <br /> i <br /> II2. I certify that this data package is in compliance with the <br /> terms and conditions agreed to by the client and CH2M HILL, <br /> both technically and for completeness, for other than the <br /> conditions detailed above. <br /> Signed:, Date: 1 u� <br /> Fred Bickell <br /> Cations Supervisor <br /> C0 ` .� <br /> CH2M HILL Redding Quality Analytical Laboratories 5090 Caterpillar Road.Redding,California 96003 916.244.6227 � <br />