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� Sequoia <br /> 680�hcsaAeake env Redwood <br /> Analytical 404 %get Lane G <br /> ytical a195tnkcrAvcnvc alnat tY CA 94063 (4t5 <br /> Suite$ Creek CA 94598 ) 364 9600 <br /> Sacramento, CA 96$34 (510) 988 9Spp FAX(415) 364 9233 <br /> (91b) 921 9600 {510)988 9673 <br /> IrQg inc FAX 1916)921 0100 <br /> P O $ox 259 Client Pralect ID <br /> Sonoma, CA 95476-025.9 Matrix Shell, 141 N El <br /> Attention Matt Donohue�0258 Air Dorado, Stockton,, CA <br /> QC Sarrlple Group 606-0372 <br /> Reported Jun 20, 7996 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYrS <br /> Benzene Ethyl- <br /> Toluene <br /> Benzene <br /> Method X Penes <br /> Analyst. EPA 8020 <br /> Concentration CL/$W EPA 8020 <br /> CL/8 W L/8 <br /> EPA 8424 EPA 8424 <br /> Spiked 2 4 mglrnx CW CL/8W <br /> LCS Batch# 2 0 m0/�nv <br /> 2 0 mg/m= B 0 mg/m3 <br /> LCS461396 <br /> LC8461396 <br /> Date Prepared LCS061396 <br /> Date Analyzed n6/13/s6 LGS461396 <br /> lnstrrlMent I.D.# 06113/.96 06/13/96 06/1,3 <br /> GCHP-7 46/13/96 196 06/13/96 06/13/6 <br /> GCHP-7 06/HP-7 <br /> LCS °,� GCHP-7 GCHP_7 <br /> Recovery, <br /> 98 <br /> Control98 <br /> 100 96 <br /> LII1't1tS <br /> 75-125 <br /> 75 125 <br /> 75-126 <br /> 75-125 <br /> MS/MSD <br /> Batch#. 88061396 <br /> 85461396 <br /> Date Prepared. 66461396 86461396 <br /> Date Analyzed. 46/13/98 <br /> Instrument 1 D #. 06/13/ss 06/13/99 <br /> 06113196 46/13/98 4fi/13/g5 <br /> GCHR7 (16/13/96 <br /> Matrix GCHP-7 06/13/96 <br /> pike GCHP-7 GCHP-7 <br /> Recovery <br /> ss <br /> Matrix$ 98 <br /> pike 100 96 <br /> Duplicate% <br /> Recovery. <br /> 9s <br /> Relative % <br /> 103 sa <br /> Ditterence- <br /> 00 <br /> 10 <br /> 20 21 <br /> EQUOIA ANALYTICAL <br />,f/ Please Note <br /> I-[t "�- L l �! 1 ?�r � The LCS rs a control sample of known <br /> Ida C Schneider Preparation and anal I n,Interferent free matrlx that <br /> chneld val�datlon of sa cal methods employed for the earn +s an <br />�Ject Man mple batch results Ples Yzsd using the same reagent <br /> aUer/'Sacrarnenta and are not used to due to matrix effects,the The LCS 90 recovery gents, <br /> �abOra [yry accept or reject batch results QC llmrts for M data Is used far <br /> S1MSD's are atiurscry only <br /> 6460372 ENV 12� <br />