Laserfiche WebLink
Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> �t1•r� 1900 nates AvenuC Swtc L Concord,CA 94520 (510) 686 9600 FAX(5 so)686 9689 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> �, <br /> WeoStrategies Inc Client Project 10 Unocal'#69$1 <br /> 3035 Prospect Park Dr, Suite 80 Matrix Air <br /> Rancho Cordova, CA 95670 Re orted Jan 19, 1995 <br /> Attention Greg Gurss QC Sample Goup 5010223-224 p <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE 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. 2 0 mg/m' 2 0 mg/m' 2 0 mg/m3 6 0 mg/m3 <br /> e <br /> LCS Batch# LCS011095 LCS011095 LCS011095 LCS01i095 <br /> Date Prepared 1/10/95 1/10/95 1/10/95 1/10/95 <br /> Date Analyzed 1/10/95 1/10/95 1/10/95 1/10/95 <br /> instrument I D # GCHP-2 GGHP-2 GCHP-2 GCHP-2 <br /> . LCS <br /> Recovery 98 97 96 98 <br /> Control Limits 75 125 75 125 75-125 75-125 <br /> ry ,xr r <br /> r n r v` <br /> i�ry r r r r n r1r ♦ r r,v .s r r r � <br /> nrr • r� }^ ♦ t r r <br /> MS/MSD <br /> Batch ,f# BLK011095 BLK011095 BLK011095 BLK011095 <br /> Date Prepared. 1/10/95 1/10/95 1/10/95 1/10/95 <br /> Date Analyzed 1/10/95 1/10/95 1/10/95 1/10/95 <br /> instrument l D.#. GCHP-2 GGHP-2 GCHP-2 GCHP-2 <br /> Matrix Spike <br /> % Recovery. 98 <br /> s7 sa sa <br /> Matrix Spike <br /> Duplicate <br /> Recovery 105 103 103 103 <br /> Relative % <br /> Difference: 6 9 6 0 5 0 5 0 <br /> SEQUOIA ANALYTICAL Please Note <br /> The LCS is a control sample of known,interferent free matrix that Is analyzed using the same reagents, <br /> preparation and analytical methods employed for the samples The LCS%recovery data is used for <br /> Gilir validation of sample batch results Due to matrix effects,the OG limits for MS/MSD's are advisory only <br /> Jennie Higgins /Z ' and are not used to accept or reject batch results <br /> Project Manager <br /> 5010223 GSI X27 <br />