Laserfiche WebLink
k i <br /> 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> IDSequoia 404 N Wiget lane Walnut Creek,CA 94598 (925)986-9600 FAX(925)988-9673 <br /> Analytical <br /> Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> • <br /> ATC Associates, Inc Client Project ID Bozzano Property <br /> 1260 Graphics Drive <br /> Modesto, CA 95351-1502 <br /> Attention Toth Lutterman QC Sample Group 9806EO6-15 Reported Aug 2, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Matrix Liquid <br /> Method EPA 8020 <br /> Analyst N Herrera <br /> ANALYTE Benzene Toluene Ethylbenzene Xylenes <br /> QC Batch # GCO62598BTEX17A <br /> Sample No GW9806D66-9 <br /> Date Prepared 6/25198 6125198 6125198 6125198 <br /> Date Analyzed 6125/98 6/25/98 6125198 6/25198 <br /> Instrument I D# GCHP17 GCHP17 GCHP17 GCHP17 <br /> Sample Cone uglL N D N D N D N D <br /> Cone Spiked, uglL 10 10 10 30 <br /> Matrix Spike uglL 82 8 1 9 7 25 <br /> % Recovery 82 81 97 83 <br /> . Matrix <br /> Spike Duplicate, ug/l. 8 2 8 2 8 3 26 <br /> % Recovery 82 82 83 87 <br /> Relative % Difference 0 0 1 2 16 47 <br /> RPD Control Limits 0-25 0-25 0-25 0-25 <br /> LCS Batch# GWBLK062598ABS <br /> Date Prepared 6125198 6125198 6/25198 6125198 <br /> Date Analyzed 6125198 6125198 6/25198 6125198 <br /> Instrument I D # GCHP17 GCHP17 GCHP1 7 GCHP17 <br /> Cone Spiked, ug/l. 10 10 10 30 <br /> LCS Recovery, uglL 9 3 9 3 9 3 26 <br /> LCS % Recovery 93 93 93 87 <br /> Percent Recovery Control Limits <br /> MS/MSD 60140 60140 60140 60140 <br /> LCS 70130 70130 70130 70130 <br /> Quality Assurance Statement All standard operating procedures and quality control requirements have been met <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 matrix spike is an aliquot of sample <br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure It <br /> t the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> interference the LCS recover is to be used to validate the batch <br /> K Kimyai <br /> Project Manager <br />