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41� Sequoia 0do ChesapeaKe Unvc Redwood Civ CA 94063 415) 364 9600 FAX(4151 364 9233 <br /> 404 N \Vtwct Lane `Vainut CreeK CA 94598 510) 988 9600 FAX(510)988 9673 <br /> Analvtical 119 Strtkcr Avenue quite 8 Sacramento CA 95834 916) 921 9600 FAX(916)921 0100 <br /> Brown & Caldwell <br /> Client Protect ID Arco 2133 Stockton <br /> 9616 Micron Ave Suite 600 Matrix Water <br /> Sacramento CA 95827 <br /> Attention Mindy Patterson CC Sample Group 507-0342 Reported Jul 25 1995 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE <br /> Cadmium Chromium Lead Nickel Zinc <br /> Method' EPA 200 7 EPA 200 7 EPA 200 7 EPA 200 7 EPA 200 7 <br /> Analyst: K Sarta K Barta K Barta K Barta K Sarta <br /> Concentration <br /> Spiked' 0 50 mg/L 0 50 mg/L 0 50 mg/L 0 50 mg/L 0 50 mg/L <br /> LCS Batch#: LCS071895 LCS071895 LCS071895 LCS071895 LCS071895 <br /> Date Prepared' 7/18/95 7/18/95 7/18/95 7/18/95 7/18/95 <br /> Date Analyzed: 7/24/95 7/24/95 7/24/95 7/24/95 7/24/95 <br /> Instrument I.D.#: P-40 P-40 P-40 P-40 P-40 <br /> LCS % <br /> Recovery: 103 94 100 101 106 <br /> Control Limits: 80-120 80-120 80-120 80-120 80-120 <br /> W ti a 3 r'h� ''•�}ry r'Mwtv IXSrh+r\\^'YS%i{4'^h}}4 rr r hf{YOYM9bY�ffj'.�Of' yv�r{�.N. �.it. <br /> r vfn n4 .vn.vra,w+.vxhrn+rnJ.xh h}wr....+-4:'.vCvrikh%K mvw..+h•nu`f wRYnJ.F:Sa OxmvrS rr W.�w,HA1�4wwv..vn.vi mJixtk ^ke.G�WGOrGvr�+rth.""`wvw wv +.w.l..+Wbh'40't r� OCAIJG.dLOG.tr?+%�?ri��vA6F <br /> MS/MSD <br /> Batch#: 5070593 5070593 5070593 5070593 5070593 <br /> Date Prepared: 7/18/95 7/18/95 7/18/95 7/18/95 7/18/95 <br /> Date Analyzed: 7/24/95 7/24/95 7/24/95 7/24/95 7/24/95 <br /> Instrument I.D.#: P40 P-40 P-40 P-40 P-40 <br /> Matrix Spike <br /> %Recovery: 98 90 98 96 103 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 98 88 96 94 99 <br /> Relative% <br /> Difference: 20 22 2.o 21 40 <br /> SEQUOIA ANALYTICAL Please Note <br /> n The LCS Is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> `n^'."l)�.,-.,-� preparation and analytical methods employed for the samples The LCS%recoverydata b used for <br /> validation of sample batch results Due to matrix effects,the QC llmits for MS/MSD's aro advisory only <br /> Janet avian <br /> Project Manager are and anot used to accept or refect batch results <br /> 50703428RS a 5> <br />