Laserfiche WebLink
j SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 • Sacramento, CA 95834 <br /> (916) 921-9600 • FAX (916) 921-0100 <br /> gis Environmental Consultants Client Project ID Shell, 141 N EI Dorado, Stockton, Ca <br /> 050 Melody Lane, Ste 160 Matrix Water <br /> Roseville, CA 95678 <br /> Attention Paul Graffi OC Sample Group 401-0741 Reported Jan 27, 1994 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyi- <br /> Benzene Toluene Benzene Xylenes <br /> Method EPA 602 EPA 602 EPA 602 EPA 502 <br /> Analyst Chiaravalloti Chiaravalloti Chiaravalloti Choaravalloti <br /> Concentration <br /> Spiked 10 ug/L 10 ug/L 10 ug/L 30 ug/L <br /> LCS Batch# LCS012694 LCS012694 LCS012694 LCS012694 <br /> Date Prepared- 1/26/94 1/26/94 1/26/94 1/26/94 <br /> Date Analyzed 1/26/94 1/26/94 1/26/94 1/26/94 <br /> Instrument I.D.#. HP-2 HP 2 HP-2 HP-2 <br /> LCS y <br /> Recovery.. <br /> 104 104 104 los <br /> Control Limits 80-120 80-120 80-120 80-120 <br /> MS/MSD <br /> Batch # 4010705 4010705 4010705 4010705 <br /> Date Prepared. 1/26/94 1/26/94 1/26/94 1/26/94 <br /> Date Analyzed 1/26/94 1/26/94 1/26/94 1/26/94 <br /> Instrument I D.# HP-2 HP-2 HP-2 HP-2 <br /> Matrix Spike <br /> %Recovery- 95 95 96 97 <br /> Matnx Spike <br /> Duplicate % <br /> Recovery- 100 100 100 103 <br /> Relative% <br /> Difference 51 51 41 60 <br /> SEQUOIA ANALYTICAL T49ase mote <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 96 recovery data is used for <br /> %'Z validation of sample batch results Due to matrix effects,the QC limits for MS/MSD's are advisory only <br /> Linda C Schneider and are not used to accept or reject batch results <br /> Project Manager <br /> 4010741 AEG <2> <br />