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eQ11Ola ^d0�-vsaoeaKc urine _ar0na a �a1Jo3 - 304 9600 =�X r4i5, =64233,, <br /> Anaiv1 r�0 13a[:s rvenu: 0cicr L .koro 14,:p n n�6 9500 ;A_X (510)oao 9039 <br /> ticai '9� 'Ker Avenue �_ C a ` 3veer'10 �_, »3�4 921 9000 =AX 9:1 01f}0 <br /> Brown & Caldwell Client Project ID irco 434-94-5 Lodi • <br /> 9616 Micron Avenue Suite 600 Matrix Air <br /> Sacramento CA 95827 <br /> Attention Mindv Wright CC Sample GrouD 4070247 254 257 Resorted Jul 19 1994 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene Benzene Xylenes <br /> Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst J Minkel J Minkel J Minkel J Minkel <br /> Concentration <br /> Spiked 70 ug/L .0 uq/L 0 ug/L 30 ug/L <br /> LCS Batch# N/A N/A N/A N/A <br /> Date Prepared N/A N/A N/A N/A <br /> Date Analyzed N/A N/A N/A N/A <br /> Instrument I D # N/A N/A N/A N/A <br /> LCS <br /> Recovery N/A N/A N/A N/A <br /> Control Llmrts 71-133 72 128 72 130 71 120 <br /> MS/MSD <br /> Batch# 9407066-01C 9407066-010 9407066-01C 9407066-01C <br /> Date Prepared. N/A N/A N/A N/A <br /> Date Analyzed 7/7/94 7/7/94 7/7/94 7/7/94 <br /> Instrument 1 D # GCHP-03 GCHP-03 GCHP-03 GCHP-03 <br /> Matrix Spike <br /> % Recovery- 100 100 100 103 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery 96 96 96 97 <br /> -Relative % <br /> Difference 4 1 41 41 60 <br /> SEQUOIA ANALYTICAL Please Note <br /> The LCS is a control sample of known interferent free matrix that Is analyzed using the same reagent <br /> (2j1 G.L preparation and analytical methods employed for the samples The LCS a recovery data is used for <br /> validation of sample batch results Due to matrix effects the QC limits for MS/MSD s are advisory only, <br /> Craig C Lee and are not used to accept or reject batch results <br /> Protect Manager <br /> 4070247 SRS <5> <br /> r� <br />