Laserfiche WebLink
' Sequoia 680 Chesapeake Drive RcdWood City,cA 94063 (415) 364 9600 FAX(415)364 9233 <br /> 404 N Wiget Fane Walnut Creek,CA 94598 (510) 988 9600 FAX(5 10)988 9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 %00 FAX(916)921 0100 <br /> Upgradien't' nvir0n'mentai V C'Oent�'tofect ID `Apache�ilastics <br /> P O Box 8002 Matrix Water <br /> 1 Stockton, CA 95208 <br /> 1 Attention Vic Cherven OC Sample Group 703-0374 Reported Mar 20, 1997', <br /> v„ ,,., i -k <br /> ' QUALITY CONTROL DATA REPORT <br /> ANALYT15= Ethyl- <br /> Benzene Toluene Benzene Xylenes <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst: B W lliams B Williams B Williams B Williams <br /> Concentration <br /> Spiked- 10 us/L 10 ug/L 10 ug/L 30 ug/L <br /> ' LCS Batch#: LCS031397 LCS031397 LCS031397 LC8031397 <br /> Date Prepared- 03/13/97 03/13/97 03/13/97 03/13/97 <br /> ' Date Analyzed. 03/13/97 03/13/97 03/13/97 03/13/97 <br /> Instrument I D.#: GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br /> LC % <br /> Recovery- 87 87 89 86 <br /> Control limits: 70-130 70-130 70-130 70-130 <br /> toe .,. r< l a� ''. , 3` '0 4Y +e r •A y * =rA'' <br /> 4 + 15vi u S <br /> ' MS/MSD <br /> Batch#. 7030316 7030316 7030316 7030316 <br /> Date Prepared. 03/13/97 03/13/97 03/13/97 03/13/97 <br /> ' Date Analyzed 03/13/97 03/13/97 03/13/97 03/13/97 <br /> Instrument LD #- GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br /> ' Matrix Spike <br /> %Recovery: 84 86 87 84 <br /> Matrix Spike <br /> ' Duplicate% <br /> Recovery 87 86 as 85 <br /> ' Relative% <br /> Difference: 35 23 1 1 12 <br /> SEQUOIA ANALYTICAL (ease 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 LCS%recovery data is used for <br /> validation of sample batch results Due to matrix effects,the QC IIMIts for MS/MSD's are advisory only <br /> dans M ruclano and are not used to accept or reject batch results <br /> Project Manager/Sacramento Laboratory <br />' 7030374 UUU <3> <br />