Laserfiche WebLink
Sequoia 680 Chesapeake Drive Redwood City CA 94063 (4t5) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX (510)988 9673 <br /> Xr Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> Ouchstone Developments Client Project ID Chevron #9-4183 <br /> 781 Kingston Ave Matrix Solid <br /> Oakland, CA 94611 <br /> Attention Robert Mallory OC Sample Group 6041871-874 Reported Apr 30, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Phenol 2-Chlorophenol 1,4-Dichloro N-Nitroso-Di 1,2,4-Trichloro 4-Chloro-3 <br /> benzene N-propylamine benzene Methylphenol <br /> OC Batch# SP042996 SP042996 SP042996 SP042996 SP042996 SP042996 <br /> 8270EXA 8270EXA 8270EXA 8270EXA 8270EXA 8270EXA <br /> Analy Method EPA 8270 EPA 8270 EPA 8270 EPA 8270 EPA 8270 EPA 8270 <br /> Prep Method EPA 3550 EPA 3550 EPA 3550 EPA 3550 EPA 3550 EPA 3550 <br /> Analyst T Granicher T Granicher T Granicher T Granicher T Granicher T Granicher <br /> MS/MSD # 6041872 6041872 6041872 6041872 5041872 6041872 <br /> Sample Conc N D N D N D N D N D N D <br /> Prepared Date 4/29/96 4/29/96 4/29/96 4/29/96 4/29/96 4/29/96 <br /> Analyzed Date 4/29/96 4/29/96 4/29/96 4/29/96 4/29/96 4/29/96 <br /> Instrument I ❑ # GC/MS-1 GC/MS-1 GC/MS-1 GC/MS-1 GC/MS-1 GC/MS-1 <br /> Conc Spiked 5000ug/kg 5000 pg/kg 2500,ug/kg 2500pg/kg 2500 pg/kg 5000 pg/kg <br /> Result 4300 4700 2300 2500 1700 4700 <br /> MS % Recovery 86 93 90 98 68 94 <br /> Dup Result 4600 5100 2500 2700 2900 5500 <br /> �SD % Recov 92 101 98 108 116 110 <br /> RPD 67 83 85 97 55 16 <br /> RPD Limit 0-35 0-50 0-27 0-38 0-23 0-33 <br /> LCS # LCSO42996 LCSO42996 LCSO42996 LCSO42996 LCSO42996 LCSO42996 <br /> Prepared Date 4/29/96 4/29/96 4/29/96 4/29/96 4/29/96 4/29/96 <br /> Analyzed Date 4/29/96 4/29/96 4/29/96 4/29/96 4/29/96 4/29/96 <br /> Instrument I D # GC/MS-1 GC/MS-1 GC/MS-1 GC/MS-1 GC/MS-1 GC/MS-1 <br /> Conc Spiked 5000ug/kg 5000 pg/kg 2500 pg/kg 2500 pg/kg 2500 pg/kg 5000 pg/kg <br /> LCS Result 3500 3600 1800 2000 2000 3900 <br /> LCS % Recov 69 72 72 78 78 78 <br /> LCS 15-115 30-120 30-120 30120 40-120 40120 <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 /> preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> SEQUOIA ANALYTICAL, #1271 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 /> 0'/JI <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 /> Kevin Van Slambrook <br /> Project Manager Page 1 of 2 <br /> 6041871 TUD <23;� <br />