Laserfiche WebLink
g B Sequoia 680 Chesapeake Drive Redwuod City CA 94063 (650) 364 9600 FAX(650)364-9233 <br /> �� 404 N Wiget 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 /> 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707) 79Z 1865 FAX(707)792 0342 <br /> • <br /> Gettler Ryan/Geostrategies Client Project ID Unocal 5421, Stockton <br /> 6747 Sierra Court, Ste J Matrix Solid <br /> Dublin, CA 94568 <br /> Attention Clyde Galantine Work Order # 9804A13-01 Reported May 4, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Phenol 2-Chlorophenol 1,4-Dichloro- N-Nitroso-Di- <br /> benzene N-propylamine <br /> QC Batch#. MSO416988270EXC MSO416988270EXC MSO416988270EXC MSO416988270EXC <br /> Analy Method EPA 8270 EPA 8270 EPA 8270 EPA 8270 <br /> Prep Method EPA 3550 EPA 3550 EPA 3550 EPA 3550 <br /> Analyst B Pitamah S Pitamah 8 Pitamah B Pitamah <br /> MS/MSD # 9804A1301 9804A1301 9804A1301 9804A1301 <br /> Sample Conc N D ND ND ND <br /> Prepared Date 4/16/98 4/16/98 4/16/98 4/16/98 <br /> Analyzed Date 4/17/98 4/17/98 4/17/98 4/17/98 <br /> Instrument I D # H5 H5 H5 H5 <br /> Conc Spiked 33001tg/Kg 3300 ug/Kg 3300 pg/Kg 3300 pg/Kg <br /> Result 2180 2140 1900 2210 <br /> MS % Recovery 66 65 58 67 <br /> Dup Result 2030 1980 1840 2070 <br /> MSD % Recov 62 60 56 63 <br /> RPD 71 78 32 65 <br /> RPD Limit 0-40 0-40 0-40 0-40 <br /> LCS # LCSO41698 LCSO41698 LCSO41698 LCSO41698 <br /> Prepared Date 4/16/98 4/16/98 4/16/98 4/16/98 <br /> Analyzed Date 4/17/98 4/17/98 4/17/98 4/17/98 <br /> Instrument I D # H5 HS H5 H5 <br /> Conc Spiked 330011g/Kg 33001rg/Kg 3300 jug/Kg 3300ftg/Kg <br /> LCS Result 1900 1830 1610 1870 <br /> LCS % Recov 58 55 49 57 <br /> LCS <br /> Control Limits 26-90 25-102 28-104 41-126 <br /> Please Note <br /> The LCS Is a control sample of known,Interferent-free matrix that Is analyzed using the same reagents, <br /> VSEQUO ALYTICAL 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 /> y **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative% Difference <br /> ager Page 1 of 3 <br /> 9804A13GET <3> <br />