Laserfiche WebLink
SEQUOIA ANALYTICAL <br /> 819 Striker Avenue Suite 8 • Sacramento CA 95834 <br /> (916) 921-9600 • FAX (916) 921-0100 <br /> Brown & Caldwell Client Project ID Arco 2133-94-5, Stockton <br /> P O Box 13449 Matrix Water <br /> Sacramento, CA 95813-3449 <br /> Attention Mindy Wright OC Sample Group 403-0688 deported Mar 30, 1994 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE <br /> Cadmium Chromium Copper Lead Nickel Zrnc <br /> Method EPA 200 7 EPA 200 7 EPA 200 7 EPA 200 7 EPA 200 7 EPA 200 7 <br /> Analyst- S Foster S Foster S Foster S Foster S Foster S Foster <br /> Concentration <br /> Spiked: 1 0 mg/L 1 0 mg/L 1 0 mg/L 1 0 mg/L 1 0 mg/L 1 0 mg/L <br /> LCS Batch#' I-CS032894 LCS032894 LCS032894 LCS032894 LCS032894 LCS032894 <br /> Date Prepared: 3/28/94 3/28/94 3/28/94 3/28/94 3/28/94 3/28/94 <br /> Date Analyzed 3/30/94 3/30/94 3/30/94 3/30/94 3/30/94 3/30/94 <br /> Instrument I D.# PE 40 PE-40 PE 40 PE 40 PE 40 PE-40 <br /> . LCS <br /> Recovery 94 92 93 94 88 89 <br /> Control Limits: 80-120 80-120 80-120 80-120 80-120 80.120 <br /> MS/MSD <br /> Batch #- 4030716 4030716 4030716 4030716 4030716 4030716 <br /> Date Prepared 3/28/94 3/28/94 3/28/94 3/28/94 3/28/94 3/28/94 <br /> Date Analyzed: 3/30/94 3/30/94 3/30/94 3/30/94 3/30/94 3/30/94 <br /> Instrument I.D #' PE-40 PE-40 PE-40 PE-40 PE40 PE-40 <br /> Matrix Spike <br /> % Recovery- 95 98 98 91 90 94 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery- 93 96 95 89 88 91 <br /> Relative % <br /> Difference 21 21 31 22 22 32 <br /> Please Note <br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> SEQUOIA ANALYTICAL preparation and analytical methods employed for the samples The LCS%recovery data is used for <br /> validation of sample batch results Due to matrix effects,the OC limits for MS/MSc's are advisory only <br /> V C—L L �� and are not used to accept or reject batch results <br /> Craig C Lde <br /> Project Manager <br /> 4030688 8RS <4> <br />