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<br />CORE LABORATORIES
<br />Q U A L I T Y C O N T R O L R E S U L T S
<br />Job Number: 962453 Date: 09/28/96
<br />CUSTOMER: Greystone PROJECT: 464-63 ATTN: Ray Faciski
<br />OC Type Description Reag. Code Lab ID Dilution Factor Date Time
<br />Test Method........: EPA 900.0 Batch........: 13238 Analyst ...: ' ca
<br />Method Description.: Gross alpha/beta Units........: pCi/L
<br />MB Method Blank MB1AB0905 09/10/96 1637
<br />Parameter/Test Description OC Result OC Result Rep. Limit True Value Orig. Value Calc. Result Units
<br />Gross alpha ND 0
<br />Gross beta 2.5 0
<br />LCS Laboratory Control Sample LCS 1q8 09/10/96 1637
<br />Parameter/Test Description OC Result OC Result Rep. Limit True Value Orig. Value Lalc. Result Units
<br />Gross
<br />Gross alpha
<br />beta 24.5
<br />23.2 0
<br />0 25.5
<br />21.5 96.1 '~ REL
<br />107.9 Y. REC
<br />MS Matrix Spike MS1AB 961898-3 09/10/96 7637
<br /> Parameter/Test Description OC Result OC Result Rep. Limit True Value Orig. Value Calc. Result Units
<br />Grass
<br />Gross alpha
<br />beta 137
<br />115 0
<br />0 128
<br />108 ND
<br />ND 107.0 Y. REC
<br />106.5 Y. REC
<br />MD Method Duplicate 961898-3 09/10/96 1637
<br /> Parameter/Test Description 0L Result OC Result Rep. Limit True Value Orig. Value Calc. Result Units
<br />Gross
<br />Gross alpha
<br />beta ND
<br />ND 0
<br />0 ND
<br />ND 0 ABS Diff.
<br />0 ABS Diff.
<br />Test Method........: EPA 624 Batch........: 13400 Analyst ...: td~
<br />Method Description.: Volatile Organics Units........: ug/L
<br />MB Method Blank AINOS 09/18/96 1019
<br />Parameter/Test Description OC Result OC Result Rep. Limit True Value Orig. Value Calc. Result Units
<br />Benzene ND 1.
<br />eromodichloromethane ND 5.
<br />eromoform ND 5.
<br />Bromomethane ND 5.
<br />Carbon tet rachLoride ND 5.
<br />Chlorobenzene ND 5.
<br />Lh loroethane ND 5.
<br />2-Chloroethyl vi nyl ether ND 10.
<br />Chloroform ND 5.
<br />Chlorome[hane ND 5.
<br />Dibromochloromethane ND 5.
<br />Page 26
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