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Sequoia 680 Chesapeake Dnve Redwood GM CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA. 94598 (510) 988 9600 FAX(510)988 9673 <br /> �ill7 Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Touchstone Developments Client Project ID Chevron 9-2033, 2033-2 <br /> -P O Box 2554 Matrb( Solid <br /> Santa Rosa, CA 95405 <br /> rAttentlon Jeff Monroe Work Order# 9611216 01 Reported Nov 14, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Beryllium Cadmium Chromium Nickel Mercury <br /> OC Batch# ME110796601OMDE ME110796601OMDE ME110796601OMDE ME110796601OMDE ME1107967471M4A <br /> Analy Method EPA 6010 EPA 6010 EPA 6010 EPA 6010 EPA 7471 <br /> Prep Method EPA 3050 EPA 3050 EPA 3050 EPA 3050 EPA 7471 <br /> Analyst R Butler R Butler R Butler R Butler T Hua <br /> MS/MSD#- 961122401 961122401 961122401 961122401 961122401 <br /> Sample Conc N D N D 26 27 N D <br /> Prepared Date 11/7/96 11/7/96 11/7/96 11/7/96 11/7/96 <br /> Analyzed Date 11/7/96 11/7/96 111/7/96 11/7/96 11/7/96 <br /> Instrument I D #. MTJA2 MTJA2 MTJA2 MTJA2 MPE4 <br /> Conc Spiked 100 mg/Kg 100 mg/Kg 100 mg/Kg 100 mg/Kg 0 40 mg/Kg <br /> Result. 91 86 120 120 038 <br /> ow % Recovery 91 86 94 93 95 <br /> Dup Result 90 86 120 110 036 <br /> MSD %Recov : 90 86 94 83 90 <br /> RPD 11 00 00 87 54 <br /> RPD Limit 0-20 0-20 0-20 0-20 0-20 <br /> LCS# BLK110796 BLK110796 BLK110796 BLK110796 BLK110796 <br /> Prepared Date 11/7/96 11/7/96 11/7/96 11/7/96 11/7/96 <br /> Analyzed Date 11/7/96 11/7/96 11/7/96 11/7/96 11/7/96 <br /> Instrument I D # MTJA2 MTJA2 MTJA2 MTJA2 MPE4 <br /> Conc Spiked. 100 mg/Kg 100 mg/Kg 100 mg/Kg 100 mg/Kg 0 40 mg/Kg <br /> LCS Result 95 94 97 96 035 <br /> LCS % Recov 95 94 97 96 88 <br /> 75-125 <br /> LCS 80-120 80-120 80-120 80-120 80-120 <br /> Control Limits <br /> Please Note <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> 116GUOI ANALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure If <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 /> Ke in Follett <br /> Project Manager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9611216 TTT <4> <br />