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Sequoia 680 Chesapcake Drive Redwood City CA 94063 (415) )54 9600 FAX(415) 364 9233 <br /> 404 N Vriget Lane Walnut Creek CA 94598 (S10) 958 9600 FAX(510)988 9673 <br /> Analytical 819$taker Avenue Site 8 Sacramcnto CA 91934 (916) 921 9600 FAX(916)921 oioo <br /> �li1u',I , SII I VIII" .r n«1 r W r VIII I <br /> "Ilwl »'-urIillll'!'� wIIIIIP'I III r - ddn, �'1L"ar.l- Idlllllllliillll L r +Illrllllli�iilllll�l 1iIIIIS��I+ � Ili Ill <br /> Environmental ResolutlonsIIIIIIII "ullldiii •rryl'tri l" <br /> Client Prot 10 Unocal SS# 5886 205503 Sampled 04/15/97 <br /> it 74 Digital Drive , SUrte 6 Sample Descript S-2 5-HA2 <br /> Novato CA 94949 Matrix SOLIt7 Received 04/78/97 <br /> Analyses Method 8015Mod 8020 Extracted 04/22/97 <br /> III / Analyzed 04/23/97 <br /> II; <br /> Attention Keith Romstad _12�t) Number9704812-03 <br /> �I Lp"'t:n r 1«la,l _•�vululll _ auuur - -1«rm' - _rr yur 'nm <br /> eeorted fl4j28j97 <br /> oC Batch Number GC042297BTEXEXA'.....r. _-IIIIIIIII)1tr I«111:11._ _ __ ^,,,,IIs' -„II _ '' 8111111„N C-,v,�.'« , <br /> Instrument ID GCHP18 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit <br /> Sample Results <br /> mg/Kg m9/K9 <br /> TPPH as Gas 1.0 <br /> Methyl t-Butyl Ether - 025 33 <br /> Benzene 0 0050 0 30 <br /> Toluene 0 4050 N D <br /> Ethyl Benzene 0 0050 N D <br /> Xylenes (Total) 00050 N D <br /> Chrornatograrn Pattern0 015 <br /> Gas <br /> Surrogates Control Limits % <br /> Trifluorotoluene 70 % Recovery <br /> 4-Bromolluorobenzene 130 121 <br /> 60 140 83 <br /> Analytes reported as N D were not present above the stated limit cf detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> 4 <br /> QNvrjFollett <br /> n <br /> oject Manager <br /> Page 6 <br />