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Sequoia <br />•� �l„� Analytical <br />680 Chesapcakc ❑nwe icd,00d Ctt% CA 94063 (415) 364 9600 FAX 141S ;64 923; <br />1900 Bates Avenue Suite L Concord CA 94520 (510) 686 9600 FAX (510) 686 9689 <br />$19 Striker Avenue Suite S Sacramento CA 95834 (910) 921 9600 FAX (91o) 93i u100 <br />groundwater Technology Client Project ID Chevron #9-2033, Stockton, CA <br />1401 Halyard Drive, Suite 140 Matrix Soil <br />West Sacramento, CA 95691 4 <br />Attention Jason Fedota OC Sample Group 5031072-1109 Reported Apr 4, 1995, <br />k}Ct.x^'Sv`w�. vn F+u .��. ♦ , + + + "(- w � vx. v.n ♦v +l.i v n vYws �rrCti r n h ufn 4'�arw ,v to rHSIA+v+4*S• hw ti«v � � wr v ?.�ti +n v w r r ti vv ♦ v +n ti nti vY,+rrr+- <br />QUALITY CONTROL DATA REPORT <br />ANALYTE <br />Cadmium Chromium Lead Nickel Zinc TRPH <br />Method- <br />EPA 6010 <br />EPA 6010 <br />EPA 6010 <br />EPA 6010 <br />EPA 6010 <br />SM 5520 EF <br />Analyst: <br />K Barta <br />K Sarta <br />K Bana <br />K Barta <br />K Barts <br />L. Bettencourt <br />Concentration <br />Spiked: <br />5D mg/kg <br />50 mg/kg <br />50 mg/kg <br />50 mg/kg <br />50 mg/kg <br />500 mg/kg <br />LCS Batch#: <br />LCS032395 <br />LCS032395 <br />LCS032395 <br />LCS032395 <br />LCS032395 <br />LCS032295 <br />Date Prepared: <br />3/23/95 <br />3/23/95 <br />3/23/95 <br />3/23/95 <br />3/23/95 <br />3/22/95 <br />Date Analyzed: <br />3/27/95 <br />3/27/95 <br />3/27/95 <br />3/27/95 <br />3/27/95 <br />3/22/95 <br />Instrument LD #: <br />P-40 <br />P-40 <br />P-40 <br />P-40 <br />P-40 <br />BAL. 4 <br />LCS % <br />Recovery: <br />104 <br />107 <br />104 <br />106 <br />108 <br />80 <br />Control Limits: <br />80-120 <br />80-120 <br />SD -120 <br />8D-120 <br />80-120 <br />75.125 <br />Yn1Mn1nY{+} ++ nnuw v n <br />n.t Wv ♦ w ++ m. w r <br />n +xY'v 4k vh'H n'n{wr <br />vw.v. nw}v.n+nr <br />xvRWf i'}F{y,�SyfTn l+M Jv xrO Kr✓w <br />}n++• nV. +r+`v4 +Snv `%-0-V+ +'+v �i +v nv +n+x ..+w♦ <br />MS/MSD <br />Batch #: <br />5031078 <br />5031078 <br />5D3t078 <br />5031078 <br />5031078 <br />5030458 <br />Date Prepared: <br />3/23/95 <br />3/23/95 <br />3/23/95 <br />3/23/95 <br />3/23/95 <br />3/15/95 <br />Date Analyzed: <br />3/27/95 <br />3/27/95 <br />3/27/95 <br />3/27/95 <br />3/27/95 <br />3/15/95 <br />Instrument I.D.#: <br />P-40 <br />P-40 <br />P-40 <br />P40 <br />P-40 <br />SAL 4 <br />Matrix Spike <br />% Recovery- <br />99 <br />81 <br />98 <br />86 <br />84 <br />80 <br />Matnx Spike <br />Duplicate % <br />Recovery. <br />101 <br />as <br />95 <br />as <br />83 <br />80 <br />Relative % <br />Difference: <br />20 <br />24 <br />31 <br />2.3 <br />2.0 <br />00 <br />SEQUOIA/ANALYTICAL <br />Linda C Schneider <br />Protect Manager <br />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 resutts Due to matrix effects, the QC limits for MS/MSDs are advisory only <br />and are not used to accept or reject batch results <br />W <br />5031072 GRW < 19> <br />