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CHRQMALAB, INC. <br /> Environmental Services(SDB) <br /> ' May 7, 1998 Submission #: 9804438 <br /> HARDING LAWSON (SACRAMENTO) <br /> ' Atten: Gary Haeck <br /> Protect: NEWARK SIERRA/STOCKTON Protect#• 40344 03 <br /> ' Received. April 29, 1998 - <br /> re: One sample for BTEX analysis <br /> Method: SW846 8020A Nov 1990 <br /> Client Sample ID: SB-1-5 . 0 <br /> Spl#: 183150 Matrix: SOIL <br /> Sampled: April 28 , 1998 Run#:12558 Analyzed. May 1, 1998 <br /> REPORTING BLANK BLANK DILUTION <br /> RESULT LIMIT RESULT SPIKE FACTOR <br /> ' ANALYTE _ _ (mQ/KQ) (mq/K4) (mg/RQ) M <br /> BENZENE N D 0 0050 N D 86 1 <br /> TOLUENE 0 10 0 0050 N D 87 1 <br /> ETHYL BENZENE 0 0083 0 . 0050 N D 83 1 <br /> XYLENES 0 . 019 0 0050 N D 87 1 <br /> Note Surrogate Recoveries biased high due to Hydrocarbon co-elution <br /> Vincent Vancil Michael Verona <br /> Chemist Operations Manager <br /> i <br /> 916-364-5633 <br /> 1220 Quarry Lane • Pleasanton, California 94566-4756 ccvr320 STEXQCO220 <br />' <br /> (510) 4841919 • Facsimile (510) 484-1096 VINCE Q4 35 <br /> Federal ID #68-0140157 <br />