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Sequoia 68u Chesapeake Dore Redwood Qty CA 94063 j4 15) 364 9600 FAX(415) 364-9233 <br /> 1900 Bates Avenue,State L Concord CA 94520 (310) 686-9600 FAX(510)686-9689 <br /> Ae n al�C� 819 Sinker/wenn,Swte 8 Seer+mento,CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> :w w n arwx• 'si�e a o • °£""x >x <br /> E est VV Client project Its. fi53.20 J Santa Fe'-Stockton <br /> 455 Capitol Mail, 8th F1r Matnx: Water <br /> Sacramento, CA 95814 <br /> Attention Laurie Deples OC Sample Goup 5020941-943 .;..� u Reported Mar 7, 7 995 <br /> ,h..ir~nh.vx•e � vSJi�v,nS �r'^4,P'YTw.f+M..-�iti�tihv}L j�.,i Y� :x'44. ,�.+ R <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE E#Wl- <br /> Benzene Toluene Benzene Xylenes <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA SIM <br /> Analyst: C Lee C Lee C.Lee C.Lee <br /> Concentration <br /> Spiked: 10 ug/L 10 ug/L 10 ug/L 30 ug/L <br /> LCS Batch#: LCS030M LCS03020 LCS030295 LC 0313M <br /> Date Prepared: 3/2/95 3/2/95 3/2/95 3/2/95 <br /> Date Analyzed: 3/2/95 9/2/95 3/2/95 3/2/55 <br /> Instrument I.D.#: GCHP-2 GCHP 2 GCHP 2 GCHP-2 <br />• LCS % <br /> Recovery: 110 104 100 sot <br /> Control Limits, 75-125 75.125 75-125 75.125 <br /> rt �"e''�a o vC`'vh•~',.ob52.�aewd✓� ` .vsSx W,,..�wc o.6.e C.,,.,:wA.a`w..w�:fi'-.c:.,,,.a�w,.. s.,.,,W,,.•.+.,w:v.wh.,,..,:..<,..ar,. <br /> MS/MSD <br /> Batch # 5031043 5031043 50;31043 5031043 <br /> Date Prepared 3/2/95 3/2/95 3/2/95 3/2/95 <br /> Date Analyzed* 3/2/95 3/2/95 3/2/95 3/2/95 <br /> Instrument LD #: GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br /> Matrix Spike 99 <br /> % Recovery: 108 102 100 <br /> Matnx Spike <br /> Duplicate% 99 <br /> Recovery• 107 99 99 <br /> Relative % <br /> Difference: 093 30 1.0 00 <br /> OUOIA ANALYTICAL ease Note <br /> The LCS is a control sample of known.Interferent tree matrix that is analyzed using the same rea0er1t1, <br /> preparation and analytical msMods employed for the samples The LCS%recovery data is used for <br /> validation of sample batch resutts Due to matrix effects,the CC limits for MS/MSD's aro advisory only <br /> Linda C Schneider and are not used to accept or refect batch resifts "Matrix interference <br /> Project Manager <br /> 5020941 ERS <4> <br />