Laserfiche WebLink
Sequoia <br />680 Chesapeake Drive <br />Redwood City CA 94063 <br />(650) 364-9600 <br />FAX (650) 364-9233 <br />EPA 8020 EPA 8020 EPA 8020 <br />404 N Wiget Lane <br />Walnut Creek, CA 94598 <br />(925) 988-9600 <br />FAX(925)988-9673 <br />� Analytical <br />819 Sinker Avenue Suite S Sacramento CA 95834 <br />1455 McDowell Blvd North Ste D Petaluma, CA 94954 <br />(915) 921-9600 <br />(707) 792-1865 <br />FAX (916) 92[-0100 <br />FAX (707) 792-0342 <br />06le-,11jan " Dublin <br />Client project ID <br />Chevron #9-5775, Lodi <br />2/18/99 <br />2/18/99 <br />6747 Sierra Court, Suite J <br />Matrix <br />Liquid <br />HP -2 <br />HP -2 <br />Dublin, CA 94568 <br />Conc Spiked: <br />20ug/L <br />20pg/L <br />20yg/L <br />Attention Barbara Sieminskl <br />QC Sample Group <br />9024622-626 <br />Reported <br />Feb 24, 1999 <br />QUALITY CONTROL DATA REPORT <br />ANALYTE Benzene <br />Toluene Ethyl Xylenes <br />Benzene <br />Method EPA 8020 <br />EPA 8020 EPA 8020 EPA 8020 <br />Analyst E Westwater <br />E Westwater E Westwater E Westwater <br />MS/MSD <br />Batch# <br />9021286 <br />9021286 <br />9021286 <br />9021286 <br />Date Prepared. <br />2/18/99 <br />2/18/99 <br />2/18/99 <br />2/18/99 <br />Date Analyzed. <br />2/18/99 <br />2/18/99 <br />2/18/99 <br />2/18/99 <br />Instrument LD #- <br />HP -2 <br />HP -2 <br />HP -2 <br />HP -2 <br />Conc Spiked: <br />20ug/L <br />20pg/L <br />20yg/L <br />60,ug/L <br />Matrix Spike <br />% Recovery. <br />95 <br />90 <br />95 <br />100 <br />Matrix Spike <br />Duplicate % <br />Recovery <br />95 <br />90 <br />95 <br />107 <br />Relative % <br />Difference <br />00 <br />00 <br />00 <br />65 <br />LCS Batch#: <br />2LCS021899 <br />2LCS021899 <br />2LCS021899 <br />2LCS021899 <br />Date Prepared <br />2/18/99 <br />2/18/99 <br />2/18/99 <br />2/18/99 <br />Date Analyzed <br />2/18/99 <br />2/18/99 <br />2/18/99 <br />2/18/99 <br />Instrument I D.#: <br />HP -2 <br />HP -2 <br />HP -2 <br />HP -2 <br />LCS % <br />Recovery: <br />95 <br />90 <br />90 <br />100 <br />Recovery <br />Control Limits: 70-130 70-130 70.130 70-130 <br />SEQUOIA ANALYTICAL, #1271 <br />4 <br />�rrltir, <br />J lianne Fegley <br />roject Manager <br />Please Note <br />The LCS is a control sample of known, interferent free matrix that is analyzed using the same reagents, <br />preparation, and analytical methods employed for the samples The matrix spike is an aliquot of sample <br />fortified with known quantities of specific compounds and subjected to the entire analytical procedure If <br />the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br />Interference, the LCS recovery is to be used to validate the batch <br />902-0622.GET <3> <br />