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Sequoia 819 Striker Avenue Suite 8 <br /> 4D— Sacramento CA 95834 <br /> (916)921-9600 <br /> �� y��� FAX(916)921-0100 <br /> 4pr Awvvw sequolalabs com <br /> Delta Environmental Consultants(Rancho Cordova Project Arco 2130,Stockton, CA <br /> 3164 Gold Camp Drive Ste 200 Project Number N/A Reporter! <br /> Rancho Cordova CA,95670 Project Manager Jay Johnson 04/02/01 11 56 <br /> Total Purgeable Hydrocarbons by DHS LUFT - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPI) <br /> Analyte Result Limit Units Level Result %RFC Limits RPD Limit Notes <br /> Batch 1030308-EPA 5030B(P/T) <br /> Blank(1030308-BLKI) Prepared&Analyzed 03/22/01 <br /> Purgeable Hydrocarbons ND 500 ug/I <br /> Surrogate a a,a-Trifluorotoluene 897 100 897 60-140 <br /> LCS(1030308-BSI) Prepared&Analyzed 03/22/01 <br /> Purgeable Hydrocarbons 598 500 ugll 600 997 70-130 <br /> Surrogate aa a-Triuorotoluene 912 11 100 912 64-140 <br /> Matrix Spike(1030308-MSI) Source S103325-03 Prepared&Analyzed 03/22/01 <br /> Purgeable Hydrocarbons 518 500 ug/I 600 ND 863 60-I40 <br /> Surrogate a a,a-Trifluorotoluene 867 11 1190 867 60-140 <br /> x Spike Dup(1030308-MSD1) Source S103325-03 Prepared&Analyzed 03/22/01 <br /> 14Wfe Hydrocarbons 415 40 0 ug/l 600 ND 692 60-140 221 25 <br /> Surrogate a a a-Trfluorotoluene 612 100 612 60-140 <br /> Batch 1030338-EPA 5030E(P/T <br /> Blank 1030338-BLKI.) _ Prepared&Analyzed 03/23/01 <br /> Purgeable Hydrocarbons ND 500 ug/1 <br /> Surrogate a a a-Triuorotoluene 873 100 873 60-140 <br /> LCS(1030338-SSI) Prepared&Analyzed 03/23/01 <br /> Purgeable Hydrocarbons 63 7 50 0 ugl] 600 106 70 130 <br /> Surrogate a aa-Trtfluorotoluene 662 11 100 862 60-140 <br /> Matrix Spike(1030338-MSI) Source 5103348-12 Prepared 03/23/01 Analyzed 03/24/01 <br /> Purgeable Hydrocarbons 49 8 250 ug/I 600 ND 830 60-140 <br /> Surrogate aaa-Tri luorotoluene 642 — -- <br /> 10 0 642 60-140 <br /> S Wa Analytical- Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 8 of 14 <br />