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~Z Laboratories, Inc. <br />2773 Downhill Drive Steamboat Springs, CO 80487 (800) 334-5493 <br />AMPLE LIENT ID R<2 G<2 BK <2 Y<2 YG<2 B<2 O<2 T>72 N/A RAD ID <br />57759-01 O-2A X <br />L57759-02 P-1 X <br />L57759-03 P-2 X <br />L57759-04 P-O1 X <br /> <br />Abbreviation Description Container Type Preservative/Limits <br />R RawMitdc RED pH must be < 2 <br />B Filtered/Sulfudc BLUE pH must he < 2 <br />BK Filtered/Nitric BLACK pH must be < 2 <br />G Filtered/Nitric GREEN pH must be < 2 <br />O RawlSUlfurid ORANGE pH must be < 2 <br />P Raw/NaOH PURPLE pH must be> 12' <br />T Raw/NaOH Zinc Acetate TAN pH must be > 12 <br />Y Raw/Sulfuric YELLOW pH must be <2 <br />YG Raw/Sulfuric YELLOW GLASS pH must be <2 <br />N/A No preservative needed Not applicable <br />RAD GammalBeta tlose rate Not applicable must be < 250 pR/hr <br />' pH check performed by analyst poor to sample preparation <br />Sample IDs Reviewed By: <br /> <br />REPAD.03.11.00.01 <br />L57759: Page 10 of 12 <br />Kerr Coal Company ACZ Project ID: L57759 <br />Date Received: 7/20/2006 <br />Received By: <br />