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RUG-12-1994 12=37 FROM PARK ENVIRONMENTAL CORP. TO 12094640138 P.07 <br /> la <br /> Alpha Analytical Laboratories Inc. SW Wz ugh Lane, H•1, Ukiah, California 95482 <br /> (707) 46&0401 <br /> November 30, 1993 <br /> Geological Audit Services <br /> 1803 W. March Lane, Suite A <br /> Stockton, CA 95207 <br /> 4. <br /> Attn: Bob Marty <br /> Subject: Quality control Rep-.rt - Pacfic Gas - 93-1111-014 <br /> C SET - CWH 1213 I 1 i <br /> MATRIX _-WATER } l <br /> Method Matrix Duplicate <br /> Blank Spike Spike <br /> Recovery Recovery Recovery RPD <br /> Gasoline NO 88. 3 91.2 3 .2 <br /> Benzene ND 90.0 94 .5 4.9 <br /> Toluene ND 94.0 98 . 6 4.8 <br /> Ethylbenzene NO 93 .4 97 . 6 4.4 v <br /> Xylenes ND 90.4 94.5 4.4 <br /> i <br /> i <br /> QC SET - MEG 9055 <br /> Diesel NO 103 97. 1 5.9 <br /> Note: This batch passes method quality c ntrol acceptance <br /> criteria. <br /> NO = none detected <br /> l <br /> ALPHA ANALYTICAL LABORATORIES, INC. I <br /> i <br /> Bruce a L. Gove <br /> Laboratory Director <br /> f <br />