Laserfiche WebLink
" Sequoia 680 Chesapeake Drive Redwood City,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 /> *I,r Analytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br />*P1DS Services Client Project ID Unocal #2859, 1665 Pacific Ave , Stockton <br /> 2401 Stanwell Dr , Ste 300 Matrix Liquid <br /> Concord, CA 94520 <br /> Attention Jarrel Crider OC Sample Group 6111573-581 Reported Dec 9, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst D Newcomb D Newcomb D Newcomb D Newcomb <br /> MS/MSD <br /> Batch# 6111014 6111014 6111014 6111014 <br /> Date Prepared 11/27/96 11/27/96 11/27/96 11/27/96 <br /> Date Analyzed 11/27/96 11/27/96 11/27/96 11/27/96 <br /> Instrument I D # HP-5 HP 5 HP-5 HP-5 <br /> Conc Spiked 20ug/L 201eg/L 201rg/L 601.g/L <br /> Matrix Spike <br /> % Recovery 90 90 105 97 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery 90 90 100 95 <br /> Relative % <br /> Difference 00 00 49 1 7 <br /> LCS Batch# 5LCS112796 51-CS112796 5LCS112796 5LCS112796 <br /> Date Prepared 11/27/96 11/27/96 11/27/96 11/27/96 <br /> Date Analyzed 11/27/96 11/27/96 11/27/96 11/27/96 <br /> Instrument I D ## HP-5 HP-5 HP-5 HP-5 <br /> LCS % <br /> Recovery 90 85 95 90 <br /> Recovery <br /> Control Limits 60-140 60-140 60-140 60-140 <br /> Please Note <br /> The LCS Is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> SEQUOIA ANALYTICAL, #1271 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 /> signature on File the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> Alan B Kemp interference,the LCS recovery Is to be used to validate the batch <br /> Project Manager <br /> 6111573 MPD <5> <br />