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CALIFORNuLaommyEnvironmental <br /> SERVICES Chemistry <br /> Analys.xs Report STEX, EPA Method 602 Y <br /> • Purge and Trap, EPA Method 5030 <br />' Client Shaw E a I, Inc. <br /> 1326 N. Market Blvd. Project No 880-040.1A/01060000 <br /> Sacramento, C 95834 Contact Kathleen Waldo <br /> Phone (916)565-4370 <br /> Project Parkinsows Arco, Stockton <br /> Lab Contact James Liang <br /> Date Extracted N/A Lab ID No T9987 <br /> Date Analyzed 07/31/2002 Job No 849987 <br /> Date Reported 08/01/2002 COC Log No NO NUMBER <br /> Batch No 33304 <br /> Instrument .ID GCO07 <br /> Analyst ID JENNDC <br /> Ma trax PATER <br /> MS SURROGATE <br /> MS <br /> Observed MS Surr Surrogate <br /> Upper Anal to Conc Conc Recovery Lower Sp S Spec U p <br /> Y CAS No (ug/L) (ug/L) (percent) (Limit) ec <br /> (Limit} <br /> o-Chlorotoluene 95498 19 7 20 0 98 65 <br /> 135 <br /> MATRIX SPIKE <br />' Observed MS <br /> Anal to Conc MS Conc Recovery Lower Spec Upper Spec <br /> Y CAS No (ug/L) (ug/L) (percent) (Limit) (Limit) <br /> 10 Benzene 71432 17 2 20 0 86 64 <br /> Toluene 108883 18 5 20 0 138 <br /> Ethylbenzene 100414 19 3 92 68 134 <br /> Xylenes, total 1330207 55 3 6p p 96 80 129 <br /> 92 81 127 <br /> MSD SURROGATE <br /> MSD <br />' Observed Surr Surrogate <br /> Anal to Conc Conc Recovery Lower Spec Upper Spec <br /> Y CAS No (ug/L) (ug/L) (percent) (Limit) (Limit) <br />' o-Chlorotoluene 95498 19 8 20 0 99 65 <br /> 135 <br /> MATRIX SPIKE DUPLICATE <br /> tObserved MSD <br /> Analyte CAS No Conc MSD Conc Recovery Lower Spec Upper Spec <br /> (ug/L) (ug/L) (percent) (Limit) (Limit) <br /> Benzene 71432 16 4 20 0 82 64 138 68 <br /> Toluene 108883 18 2 20 0 91 <br /> Ethylbenzene 100414 19 4 20 0 134 <br /> 97 80 12$ <br /> Xylenes, total 1330207 56 1 60 0 <br /> 94 82 124 <br /> RELATIVE % DIFFERENCE <br /> Relative <br />' Percent <br /> Analyte CAS No Difference Lower Spec Upper Spec <br /> (percent) (Limit) (Limit) <br /> • <br /> CA DOHS SLAP AC <br /> 3249 Fitzgerald Road Rancho Cordova,CA 95742 800-638-7301 916-638-7301 Fax- 916-638-4510 <br />