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Sequoia 680 Chesapeake Dnvc Redwood City,CA 94063 (415) 364-9600 FAX(415) 364 9233 <br /> 1900 Bates Avenue,Suite L Concord,CA 94520 (510) 686-9600 FAX(510)686 9689 <br /> Analytical 819 Sinker Avenue Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> x hrN,�., <br /> X44 'r 4� • ' 'v,C�.xix ' r i i�+n,s'k r� , 4�fSw$Gi{ <br /> $ RESNA n "r n w Client Project ID '152102 02 Tri Valley Growers <br /> 1710 Main Street Matrix Liquid <br /> ,Escalon, CA 95320 ° <br /> ',Attention- Bill Channell QC Sample Group 4C71701-08 Reported May. 22, 1994 <br /> n1. — s11 1,.,^_a-,,;.. .,,,.,, ,`.i,•i�?a�r.�44; .,r.'. Su '" r <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> Method. EPA 8020 EPA 8020 EPA 3020 EPA E.0020 <br /> Analyst R Geckler R Geckler R Geokler R.Geckler <br /> MS/MSD <br /> Batch#: 4C54901 4CS4901 4054901 41054901 <br /> Date Prepared: N/A N/A N/A N/A <br /> Date Analyzed: 3/11/94 3/11/94 3/11/94 3/11/94 <br /> Instrument 11.13#: GCHP-6 GCHP-6 GCHP-6 GCHP-6 <br /> Conc.Spiked: 10ug/L 10ug/L 10ug/L 30ug/L <br /> Matrix Spike <br />. %Recovery: 88 89 89 90 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 95 110 110 107 <br /> Relative% <br /> Difference: 77 21 21 17 <br /> t"` <br /> LCS Ba±chi#: - - - - <br /> Date Prepared: - - - - <br /> Date Analyzed: - - - - <br /> Instrument LD #: - - - - <br /> LCS% <br /> Recovery: - - - - <br /> %Recovery <br /> Control Limits: 71-133 72-128 72-130 71-120 <br /> Please Note <br /> The LCS Is a oontrol sample of known,interferent free matrix that is analyzed using the same reagents, <br /> SEQUOIA ANALYTICAL preparation,and analytical methods employed for the samples The matnx spike is an aliquot of sample <br /> p fortified with known quantities of specific compounds and subjected to the entire analytical procedure H <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> interference,the LCS recovery is to be used to validate the batch <br /> Vickie Tague Clark <br /> Project Manager 4071701 WAT <3n <br />