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' Sequoia .680 Chesapeake Drive Redwood City CA 9406 0415) 364 9600 FAX(415) 364 9233 <br /> 404 H Wi9ct Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento, CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> 1Jpgracfient Client Project 1D Apache Plastics <br /> ' ¢ 1017 26th St Matrix Water <br /> x Sacramento, CA 95816 <br /> Attention Vic Cherven OC Sample Group 608-1165 Reported Sep 11, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> t <br /> ANALYTE Ethyi- <br /> ' Benzene Toluene Benzene Xylenes <br /> ' Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst C Lee C Lee C Lee C Lee <br /> Concentration <br /> Spiked 10 ug/L 10 ug/L 10 ug/L 30 ug/L <br /> ' LCS Batch# LCS090596 LCS090596 LCS090596 LCS090596 <br /> ' Date Prepared 09/05/96 09/05/96 09/05/96 09/05/96 <br /> Date Analyzes! 09/05/96 09/05/96 09/05/96 09/05/96 <br /> Instrument I D# GCHP 7 GCHP-7 GCHP-7 GCHP-7 <br /> LCS <br /> Recovery 112 113 113 113 <br /> ' Control Limits 70-130 70-130 70-130 70-130 <br /> Sr <br /> ' MS/MSD <br /> Batch# 6090140 6090140 6090140 6090140 <br /> Date Prepared 09/05/96 09/05/96 09/05/96 09/05/96 <br /> ' Date Analyzed 09/05/96 09/05/96 09/05/96 09/05/96 <br /> Instrument I.D # GCHP-7 GCHP-7 GCHP-7 GCHP-7 <br /> ' Matrix Spike <br /> %Recovery 109 110 110 110 <br /> Matrix Spike <br /> ' Duplicate% <br /> Recovery 100 102 103 100 <br />-' Relative% <br /> Difference 86 75 66 95 <br /> ' SEQUOIA ANALYTICAL Please Note <br /> The LCS 1s a control sample of known,Interfereni free matrix that is analyzed using the same reagents, <br /> n I in 0 nnnS�J preparation and analytical methods employed for the samples The LCS%recovery data is used for <br /> validation of sample hatch results Due to matrix effects,the QC limits for MS/MSD's are advisory only <br /> Margie Namba 1 and are not used to accept or refect batch results <br /> Project Manager/Sacramento Laboratory <br /> 1 6081165 UPS t2> <br />