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/ '�)— <br /> Sequoia 680 Ch4mapeake Dnve Redwood City CA 94063 (415) 364-9600 FAX(415) 364-9233 <br /> "5 Analytical 404 N W'get Lane Walnut Creek,CA 94598 (510) 988 9600 FAx(510)988-9673 <br /> B19 Sinker Avcnue,Suite B Sacramento CA 95834 (916) 921-9600 FAX(916) 921-0100 <br /> . <br /> f=ugra West;Inc ` ' Citelli project` I#7 Sliell,'14 N M Dorado, Sto&66, CA <br /> 1050 Melody Lane, Ste 160 Matra. Water <br /> V Roseville, CA 95678 <br /> Attention Sudhakar Talankl QC Sampie Group 509-0177 x Reported Sep 15,x1995 <br /> y Z-ZRJ <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE 1,4-Dlchloro- N-Nitraso-01- 1,2,4-Tnchloro- 4-Chloro-3- <br /> Phenol 2-Chlorophenol benzene N:2ropyiamine benzene Methylpheft <br /> yl <br /> Method. EPA 625 EPA 625 EPA 625 EPA 625 EPA 625 EPA 625 <br /> Analyst: B Pltamah 8 Pttamah B Pltamah B Pitamah B Pttamah B Pttamah <br /> Concentration <br /> Spiked- 200 ug/L 200 ug/L 200 ug/L 200 ug/L 200 ug/L 240 ug/L <br /> LCS Batch#' N/A N/A N/A N/A N/A N/A <br /> Date Prepared: N/A N/A N/A N/A N/A N/A <br /> Date Analyzed' N/A N/A N/A N/A N/A N/A <br /> Instrument I D #' N/A N/A N/A N/A N/A N/A <br /> LCS % <br /> Recovery' N/A N/A N/A N/A N/A N/A <br /> Control Limits: 5-112 23-134 20-124 RL-230 44142 22-147 <br /> vrYr,. rx v w.tit yr ,py},.u..xv4. tr�rRr. .,. v r r ti .wr rN h,+^^• } dkt 4.r nr: A ... rry r Y ' .. <br /> MS/MSD <br /> Batch#' B6090795 BS090795 BS090795 BS090795 BS090795 SS090795 <br /> Date Prepared: 9/7/95 9/7/95 9/7/95 9/7/95 9/7/95 9/7/95 <br /> Date Analyzed: 9/8/95 9/8/95 9/8/95 9/8/95 9/8/95 9/8/95 <br /> Instrument LD.#• H5 H5 H5 H5 H5 H5 <br /> Matnx Spike <br /> 60 65 <br /> % Recovery- 33 60 55 65 <br /> Mature Spike <br /> Duplicate <br /> 65 65 <br /> Recovery- 38 b4 74 <br /> Relative % <br /> Difference: 16 so 87 74 80 00 <br /> lease Note <br /> SEQUOIA ANALYTICAL The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> paration and analytical methods employed for the samples The LCS%recovery data 1s used for <br /> ��&�trolldation 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 /> Linda Schneider <br /> Project Manager Page 1 of 2 <br /> 5090177 FUG <8> <br />