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jSequoia 6111)( lhrtiilirrke I1,ivr R-1wiKpi C Ily,( A +1411/,1 (415) 164 g600 IAX (415) 164 IM <br /> 404 N Wikrt I Ane Wainut Creek,CA 94598 (510) 988 9600 IAX (510)988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento, CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> k ySri � a ' 3 y <br /> Geocon Client project 10 305 S I-lutchlns Street n ` <br /> 13235 Sunrise Blvd , Suite 6 Matrix Water <br /> Rancho Cordova, CA 95742 <br /> ' Attention Rick Walls QC Sample Group 5071178-1183 Reported u Jul 31, 1995 , <br /> .lin• +t .>n c y <br /> `4� i O f.rn Y QSy f 0 y i v ♦ �4+y nry ir'+ t vyi i <br /> QUALITY CONTROL DATA REPORT <br /> ANALYT Ethyl- <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 10pg/L 10pg/L 10pg/L 30ug/L <br /> ' LCS Batch# LCSG72895 LCS072895 LCS072895 LCS072895 <br /> Date Prepared* 7/28/95 7/28/95 7/28/95 7/28/95 <br /> Date Analyzed- 7/28/95 7/28/95 7/28/95 7/28/95 <br /> Instrument I D.#: GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br /> LCS% <br /> Recovery- 100 ss 100 99 <br /> Control Limits: 75-125 75-125 75-125 75-125 <br /> ~S rn` , v s m ) " . O O 'L t v + 1 v w s n n h r T O . ♦ �i <br /> ` S 9v rv ` r r i r ri} • lSr � 5 YS t <br /> v <br />' MS/MSD <br /> Batch# 5071467 5071467 5071467 5071467 <br /> Date Prepared' 7/28/95 7/28/95 7/28/95 7/28/95 <br />' Date Analyzed, 7/28/95 7/28/95 7/28/95 7/28/95 <br /> Instrument I D #. GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br />' Matrix Spike <br /> % Recovery: 93 92 93 92 <br />' Matrix Spike <br /> Duplicate% <br /> Recovery- 92 90 95 93 <br /> Relative% <br /> Difference: 1 1 22 21 1 1 <br /> Please Note <br /> The LCS Is a control sample of known,Interferent free matrix that is analyzed using the same reagents, <br /> EQUOIA ANALYTICAL preparation and analytical methods employed for the samples The LCS%recovery data is used for <br /> validation of sample batch results Due to matrix effects,the QC limits for MS/MSD's are advisory only <br /> and are not used to accept or reject batch results <br /> Janet H Ian <br />' Project Manager <br /> 5071178 GEC a2> <br /> � I <br />