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03/23/98 MOM 18:38 FAX 916 858 0605 IT Corporation/RC 19011 <br /> Sequoia Goo Chnwpeake Drive Redwood City,CA 94063 (630) 364-9600 PAX(001364-5233 <br /> 463N_Wigec Lane Walnut Creek,CA 91598 (5107 988.9600 FAX(510)988-9679 <br /> Analytical <br /> alytica 819 Striker Avenu4 Suite 8 Sarnmenm,CA 95834 (9161 921 9600 TAX(915)921-01(0 <br /> ¢ iMA.>! z5x 9.'ki vPi3, aa 'd':M gnat• :iak >R4RS3's2":%&er%%£n�'s:»:tab$3:.SSyt#. m:>ilk!dt", ,'f+a��wS;+s•x::::`7,#9• � <br /> 'gltac�c rr% ronmenwifi lra p II- Proleot l�n )c le, GlErop, CA <br /> 11315 Sunrise Gold Circle, Ste. M Matra Soil <br /> Rancho Cordova CA 95742 <br /> Attention Rusty Benkosky CIC Sample Group 7110397-0402 Reported: Dec 3, 1997 <br /> �. .:."S;V4Ri5 'R 5 .-':'.::'i :>S;tdYq Kr%�b4QAiE!�?aS{$Y'a::t>,ea%,F2I RAAYRAYW:=Y''X;YfYEM32d 3",r�<:%tPattii ZvS,PAQki?�-ea c�'::Y1S.>-.X61'i39rz>;w:RFR'Y`"K'i3`$d't`8':�ia;r,>`".'>:: <br /> QUALITY CONTROL.DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene 9anzene Xylenas Lead MTBE <br /> Method: EPA ao2o EPA 9020 EPA 8020 EPA 8020 EPA 6010A EPA 8260 <br /> Analyst: C. Lee C.Lee C.Lee C.Lae D.Knob L.Zhu <br /> Concerltration <br /> Spiked: 0.20 mg/kg 0.20 mg/kg 0.20 mg/kg 0.60 mg/kg 50 m9/k9 2.5001rg/kg <br /> LCS Batch#: LCS111997 LCS111997 LCSIII927 LC$111997 LCS120197 LCS112197 <br /> Date Prepared: 11/19/97 11/18/97 11/19/97 11/19/97 12/01/97 11/19/97 <br /> Date Analyzed: 11/19/97 11/19/97 11/19/97 11/19/97 12/03/97 11/21/97 <br /> Instrument I.D.31r: CCHP-1 GCHP-1 CCHP-1 GCHF-1 ICP-t r'2 <br /> LCS% <br /> Recovery: 115 103 103 103 Be 198 <br /> �Control Limits: 70-13D qq 70-130 70-130 70-130 80.120 70-130 <br /> `tr?�'5. .. d R << ?.�R�>7, 4r1�4,?,3',ST x is�g4d d t - ,.e sr x?x£°y tt :i�t�,{(II a y9Y�� t. £r�,h c c i' 'N�.• '�:?�:1r -ap c �o,>.p• <br /> MS/MSD <br /> Batch#: 7110839 7110839 Ill Da39 7110839 7110402 9711872-02 <br /> Date Prepared: 11/19/97 11/19/97 11/19/97 11/19/97 12/01/97 11/21/97 <br /> Date Analyzed: 11/19/97 11/19/97 11/19/97 11/19/97 12/03/97 11/23/97 <br /> Instrument I.D-#: CCHP-1 CCHP-1 GCHP-1 GCHP-1 ICP-1 F2 <br /> MatrtK Spike <br /> %Recovery: 114 102 102 102 Be 96 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 115 108 103 103 95 Be <br /> Relative% <br /> Diflerence: 0.07 0.93 0.9e 0.96 4.1 0.0 <br /> SEQUOIA ANALYTICAL Please Nate: <br /> The LCS is a control sample of known,inlerlereni tree matrix that Is analyzed uain9 the same reagents, <br /> f ,! preparation and analytical melhoga employed for the samples. The LCS%recovery data Is used Mr <br /> validation or sample batch results, Due to mazax affects,the OC limits for MSjK4$M arm advisory only <br /> C.SChn er and are not used to accept or refect batch results. <br /> roject Manager/Sacramento Tabora ory <br /> 7110397.PEG <10> <br /> ta <br />