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404 N Wiget Lane <br /> Sequoia Walnut Creek CA 94598 <br /> 4 (925)988-9600 <br /> Otfl,�� <br /> Analytical FAX(925)988-9673 <br /> r Rvan,hic -Dublin Protect Tosco <br /> 6747 Sierra Court Suite J Project Number Tosco#6981 Reported <br /> Dublin CA,94568 Project Manager Steve Carter 09-Mar-00 10 33 <br /> Total Purgeable Hydrocarbons (C6-Cl2) and BTEX in Air by DHS LUFT - Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> RLporting Spike Source %RLC. RPI <br /> Anal)te Result Limit Units Level Result %A-EC Limits RPD Limit Notea <br /> Batch OB28006- EPA 5030B [PIT] <br /> LCS(OB28006-BS3) Prepared&Alialyzed 02-Mar-00 T� <br /> B,nzene 3 50 0 010 mg/ml Air 400 975 70 130 <br /> 1 oluene 364 0 010 400 91 0 70 130 <br /> £thNlbenzene 352 0010 400 88 0 70-130 <br /> \)lenes(total) 117 0 010 120 975 70-130 <br /> %w i ogaie a a o Trifluor orohieire 536 600 893 -0-130 <br /> LCS(OB28006-BS4) PrepdrLd&Analyzed 03-Mer-00 <br /> rl,nzene 3 n 0 010 mg+m'Air 400 945 70-130 -- <br /> 7 oluene 3 R4 0 010 d 00 960 70 130 <br /> EthObenzene 344 U 010 4 00 X6 0 70 130 <br /> \�lenes(total) 12 5 0 010 120 104 70-130 <br /> t ogate a a a-D iuoi otoluc ne 558 600 930 70 130 <br /> Dup (OB28006-BSD3) Prepdrt-d&Analyzed 26-Feb-00 <br /> Benzene 1 56 0010 ing/rn'Air 200 780 70 130 137 20 <br /> Toluene 154 0 010 200 770 70 1311 '4 5 20 <br /> E,h)lhenzene 147 0 UIU 200 73 5 70 130 162 20 <br /> \)ten us(total) 504 0 010 600 940 70-130 109 20 <br /> 4urrogale a a a-Tgfluoi ofoluene 540 600 900 70 110 <br /> uola Analytical-Walnut Creek The results in this report apply to the smnples oiraheed m accordonce a Nh the churn of <br /> custody document This analytical report nn<st he reproduced m its ennrett <br /> Page 8 of 9 <br />