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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364-9600 FAX(415) 364-9233 <br /> 1900 Bates Avenue Suite L Concord,CA 94520 (510) 686 9600 FAX (5 t0) 686 9689 <br /> Analytical 819 Stnker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916}921-0100 <br /> Mlttelhauser Corporation xClient Project ID* Y2168 01-001+, Unocal Tracy <br /> 7901 Stoneridge Drive, Suite 123 Matrix Solid <br /> ' ,Pleasanton, CA 94588 " <br /> Attention R Marks/R Papier Work Order# 9 9502243-01-2 Reported Feb 9,_1995 <br /> r . .xwo-Y....:,. cr Y Yx" Y.,.~,.'r„Y; .. f,s ••'4,.a.% ^r'Y .. Yr vis,? Y.a's.o{ ^a. kL isx^ rt:f .w.F',cr'w d.zaia.,. <br /> ' QUALITY CONTROL DATA REPORT <br /> Analyte: 1,1-Dichloroethene Trichioroethene Benzene Toluene Chloro- <br /> benzene <br /> QC Batch#: MS0203958240EXA MS0203958240EXA MS0203958240EXA MS0203958240EXA MS020395a240EXA <br /> Analy Method: EPA 8240 EPA 8240 EPA 8240 EPA 8240 EPA 8240 <br /> Prep Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> ' Analyst: B Pitamah B Pitamah B Pitamah B Pitamah B Pitamah <br /> MS/1MSD#: 95011-13701 9501H3701 9501H3701 9501H3701 9501H3701 <br /> Sample Cone.: N D N D N D N D N D <br /> ' Prepared Date: 2/3/95 2/3/95 2/3/95 2/3/95 2/3/95 <br /> Analyzed Date: 2/3/95 2/3/95 2/3/95 2/3/95 2/3/95 <br /> Instrument I.D.#: MS-F2 MS-F2 MS-F2 MS-F2 MS-172 <br /> ' Cone Spiked: 2500 Ng/Kg 2500P9/K9 mpg/Kg 2500f1g/Kg 250opg/Kg <br /> Result: 2000 2000 2300 2300 2300 <br /> MS %Recovery: 80 80 92 92 92 <br /> Dup. Result: 2200 2300 2500 2500 2500 <br /> MSD%Recov.: 88 92 100 100 100 <br /> ' RPD: 48 93 83 83 83 <br /> RPD Limit: 0-50 0-50 0-50 0.50 0-50 <br /> hvAv x}}~v Mr " ry � 442n H.�Y�..Nis S.r'• `L{ t ,Y.,��'.}}y $`�w...o}�4j},J 4 ti-,a"Gos`"a+`>,', � <br /> r'r4+`}ar.+eJ.v x Yn nsYmnO�.Li,...wJ7ry } rH GG n r v}Oti 4v vti a. n r`dd..4``nsMAtsWi.a�.v hsnYr.vc4 Atd}iSAwrw *'..�ix-.mw!`rv hwn}sw-L$d A <br /> LCS#: - - - - <br /> ' Prepared Date: - <br /> Analyzed Date'. - <br /> Instrument I.D #: - - - - <br /> ' Cone Spiked: - - - <br /> LCS Result: - - - - <br /> ' LCS % Recov.: - - - - - <br /> D <br /> ' LCS 01--234 71-157 37-151 47-150 37-160 <br /> Control Limits <br /> ' Please Note <br /> The LCS 1s a control 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 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 matnx spike does not fail within specified control limits due to matnx <br /> Cinterference,the LCS recovery 1s to be used to validate the batch <br /> Vickie Tague Clark **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative 96 Difference <br /> Project Manager 9502243 MMM `s' <br />