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COLUMBIA ANALYTICAL. SERVICES,INC <br /> Analytical Report ---- <br /> Client EMCON Associates Service Request: S950269 <br /> Project ARCO Facilitv No 2130/EMCON Project No 1-7-2-1901 Date Collected: 2128 3/1/95 <br /> Sample Matrix Nater Date Received- 3/3/95 <br /> Date Extracted: NA <br /> Date Analvzed• 3/10-15/95 <br /> BTEX and TPH as Gasoitne <br /> EPA Methods 503018020/California DHS LUFT Method <br /> TPH as Ethyl- Xylenes, <br /> Analvte Gasoline Benzene Toluene benzene Total <br /> Units ug/L(ppny i&L(ppb)/ ug/L(ppb ug/L(ppb/ ug/L(ppb)/ <br /> Method Reporting Limit 50 y 05 05 05 05 <br /> Sample Name Lab Code <br /> M W-l 173) S950269-001 340 2 I ND 06 ND <br /> MW-2 (72') S950269-002 Ito ND ND ND ND <br /> MW-3 (72') S950269-003 73 0 7 ND ND ND <br /> MW-4(74') S950269-004 ND 09 ND ND ND <br /> MW-5 (76') 5950269-005 310 70 14 5 9 so <br /> MW-6 (72') S950269-006 55 ND ND ND ND <br /> MW-7 (72') 5950269-007 ND ND ND ND ND <br /> MW-9 (75') S950269-008 ND ND 13 ND ND <br /> MW-10 (71') S950269-009 300 09 ND ND ND <br /> Method Blank 5950310-WB ND ND ND ND NIL <br /> Method Blank S950313-WB ND ND ND ND ND <br /> Method Blank S950315-WB ND ND ND ND ND <br /> Approved By Date 3 <br /> %B'TRGASl061694 <br /> Page 3 <br />