Laserfiche WebLink
SEQUOIAANALYTICAL1900 Bates Avenue • Suite LM • Concord, California 94520 <br /> (510) 686-9600 • FAX (510) 686 9689 <br /> Kapreallan Engineering, Inc Client Project ID Unocal, 7303 Pacdic Ave , Stockton <br /> 2401 Stanwell Drive, Suite 400 <br /> Concord, CA 94520 <br /> Attention Mardo Kaprealian, P E QC Sample Group 2121171-74 Reported ,fan 11, 1993 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Tnchloro- Chloro- <br /> 1,1-Dichioroethene ethene benzene <br /> Method EPA 8010 EPA 8010 EPA 8010 <br /> Analyst K Nill K Nill K Nill <br /> Reporting Units pg/L Ng/L ug/L <br /> Date Analyzed .tan 7, 1993 Jan 7, 1993 Jan 7, 1993 <br /> QC Sample# Matrix Blank Matrix Blank Matrix Blank <br /> Sample Conc N D N D N D <br /> Spike Conc <br />. Added 10 10 10 <br /> Conc. Matrix <br /> Spike 86 10 10 <br /> Matrix Spike <br /> %Recovery- 86 100 100 <br /> Conc. Matrix <br /> Spike Dup.: 87 10 10 <br /> Matrix Spike <br /> Duplicate <br /> % Recovery: 87 100 100 <br /> Relative <br /> % Difference: 12 00 00 <br /> Quality Assurance Statement All standard operating procedures and quality control requirements have been met <br /> Laboratory Blank contained the following analytes !None detected <br />• SEQUOIA ANALYTICAL %Recovery Conc of M S -Conc of Sample x 100 <br /> Spike Conc Added <br /> Relative%Difference Conc of M S -Conc of M S D x 100 <br /> ttA O (Conc ofMS + Conc ofMSD)/2 <br /> Project Manager 2121171 KEI <�> <br />