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A lit •a <br /> j SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive Redwood City, CA 94063 <br /> (415) 364-9600 FAX (415) 364-9233 <br /> C ,4V},. r4� fiP�- <br /> �4r�n"� <br /> RESNA Client Project ID 150002 00, Laidlaw Corp <br /> 1710 Main Street Matrix Water <br /> v Escalon, CA 95320 <br /> Attention John Lane OC Sample Group 31422803 Reported Aug 11, 1993 <br /> r v ryS'V,C� + + rfn ,'vr r n Zi r v vvnx x�x r rS%rry ,. , r r , ♦..,,, ,nr.N r,n h4 r+ n,v }r+t u4i.}r+v ir+ 7v'£r}r y .. +\Vxv"vr .. <br /> OUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene Benzene X enes <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst: M Nipp M Nipp M Nipp M Nipp <br /> Conc Spiked: 10 10 10 30 <br /> Units: Ng/L Ng/t Pg/L pg/L <br /> LCS Batch#: BUM093 BLK081093 BLK081093 BU=1093 <br />. Date Prepared. - - - - <br /> Date Analyzed: 8/10/93 8/10/93 8/10/93 8/10/93 <br /> Instrument I.D.#- GCHP3 GCHP3 GCHP-3 GCHP-3 <br /> LCS % <br /> Recovery: 100 100 100 100 <br /> Control Limits 80-120 80-120 80-120 80-120 <br /> MS/MSD <br /> Batch#: 31422805 31422805 3H22805 3H22805 <br /> Date Prepared - - - <br /> Date Analyzed. 8/10/93 8/10/93 8/10/93 8/10/93 <br /> Instrument I.D #: GCHP-3 GCHP3 GCHP3 GCHP-3 <br /> Matrix Spike <br /> % Recovery: 110 110 110 103 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 110 100 110 103 <br /> Relative% <br /> Difference. 00 95 00 00 <br /> 0 <br /> SEQUOIA ANALYTICAL Please 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 CC limits for MS/MSD's are advisory only <br /> and are not used to accept or reject batch results <br /> Vickie Tague <br /> Project Manager 3H22801 WAT <3> <br />