Laserfiche WebLink
/ SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue a Suite LM - Concord,California 94520 <br /> (510) 686-9600 - FAX (510) 686-9689 <br /> N,o-t,4 <br /> iLwXisobiatiis V Client F'rojectID" <br /> ~ <br /> VARCC� 2b9�=9 -i;7racy <br /> 01855 Gateway Blvd , Ste 770 Matrix Soil <br /> Concord, CA 94520 <br /> f Attention Paul Supple QC Sample Group 3070572-573 Reported Jul 30, 1993 v <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE STLC <br /> Lead <br /> Method EPA 7421 <br /> ' Analyst: K v S <br /> Cone Spiked 10 <br /> Units mg/L <br /> ' LCS Batch#- i3LK072793 <br /> Date Prepared. 7/27/93 <br /> I <br /> Date Analyzed 7/30/93 <br /> nstrument I D.# SpectrAA-4W <br /> LCS °.6 <br /> 10 Recovery 100 <br /> Control Limits: 75-125 <br /> ir[ <br /> ] x c a:.c`.' , ..,,i .. ,..,,,....,,,r nn r,rt r• ,.� ti,.. ,,.,.,., A,.,t <br /> MS/MSD <br /> Batch # 3070921 <br /> Date Prepared 7/27/93 <br /> IDate Analyzed: 7/30/93 <br /> nstrument I.D.#: SpectrAA-400 <br /> I <br /> Matrix Spike <br /> %Recovery: 80 <br /> Matrix Spike <br /> I <br /> Duplicate % <br /> Recovery: 84 <br /> IRelative% <br /> Difference: 49 <br /> 6EIQIUOIAAN YTICAL lease Note <br /> The LCS Is a control sample of known,interferent free matrix that Is analyzed using the same reagents, <br /> Ld analytical methods employed for the samples The LCS%recovery data is used for <br /> validation of sample batch results Due to matrix effects,the CC limits for MS/MSD's are advisory only <br /> tenneth K F Lee and are not used to accept or reject batch results <br /> Laboratory Director <br />' #3070572 ROU <3> <br />