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Engineers <br /> Planners <br /> Economists <br /> scientists l <br /> CASE NARRATIVE <br /> Metals ` <br /> 1 <br /> 29926 <br /> I. Holding Time: <br /> All holding times were met <br /> II. Analysis: <br /> A. Blanks: <br /> All acceptance criteria were met. <br /> B. Calibration: <br /> All acceptance criteria were met. <br /> C. SCP Interference Check Sample: <br /> All acceptance criteria were met. <br /> D. Spike Sample Analysis: 'L <br /> One of the predigestion spike recoveries for Furnace Lead ti <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 /> t <br /> All acceptance criteria were met. <br /> F. Laboratory Control 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. h <br /> III. 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 /> � <br /> Signed:_ c�r.�1 T Date: I h <br /> I4 <br /> Fred Bickell } <br /> Cations Supervisor 1 , <br /> { <br /> 0'L 0 fl <br /> CH2M HILL Redding Quality Analytical Laboratories 5090 Caterpillar Road,Redding,California 96003 916,244.5227 <br />