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Sequoia Walnu�eek,� 94 98 <br />4 (925) 4D 99600", <br />1„w Analytical w9) 8 mf <br />Gettler Ryan, Inc - Dublin Project Unocal <br />6747 Sierra Court Suite J Project Number Unocal N 0123 Reported* <br />Dublin CA, 94568 Project Manager Deanna L Harding 29 -Dec -M 07 40 <br />Total Purgeable Hydrocarbons (C6 -C12), BTEX and MTBE by DHS LUFT - Quality Control <br />Sequoia Analytical - Sacramento <br />Reporting Spike Source %REC RPD <br />Analyte Result Linut Umts Level Result %REC Lrmrts RPD Lunt Notes <br />Batch 0120230 - EPA 5030B (PPI) <br />Blank (0120230-BLKI) <br />Prepared 6t Analyzed 19 -Dec -00 <br />Purgeable Hydrocarbons <br />ND <br />500 <br />ug/1 <br />Benzene <br />ND <br />0 500 <br />" <br />Toluene <br />ND <br />0 500 <br />" <br />Ethy%-ze= <br />ND <br />0 500 <br />" <br />Xyleaes (total) <br />ND <br />0 500 <br />" <br />Methyl tert-butyl c*m <br />ND <br />250 <br />" <br />S-mgats aria-7WJ wororolwsne <br />979 <br />1 a0 <br />979 <br />60-140 <br />LCS (0120230 -BSI) <br />Prepared <br />& Analyzed 19 -Dec -00 <br />EWnzene <br />105 <br />0 500 <br />ug/l <br />100 <br />105 <br />70-130 <br />Tuln°n° <br />103 <br />0 500 <br />" <br />100 <br />103 <br />70-130 <br />Lthylbavena <br />103 <br />0 500 <br />10 0 <br />103 <br />70-130 <br />XYIe— (tow) <br />306 <br />0 500 <br />300 <br />102 <br />70-130 <br />• <br />Methyl tart -butyl ether <br />997 <br />250 <br />100 <br />997 <br />70-130 <br />Smmgare aaa-7W lwororoIuvw <br />10.5 <br />10-0 <br />IOS <br />60-140 <br />Matrix Spike (0120230-MSl) <br />_ Source W01216749 <br />_ <br />Prepared <br />& Analyzed 19 -Dec -M <br />101 <br />0 500 <br />U94 <br />loo <br />ND 101 <br />60.140 <br />—Toluene <br />_ <br />�ylbe <br />102 <br />__0500 _. <br />_ " <br />10 0..- <br />-- - -ND. --- - 102....60-140 <br />103 <br />0 500 <br />100 <br />ND 103 <br />60-140 <br />Xylenes(tow) =- -- - - ___1t _ x <br />--310 - <br />-_ 0500=- <br />-- <br />0--300 <br />--ND--- 103- <br />--60-140=�-- <br />Methyl wt -butyl ether <br />115 <br />250 <br />100 <br />ND 115 <br />60-140 <br />Swrogwe asa`Trrfheororohow <br />899 <br />Ido <br />899 <br />60-1 40 <br />Matrix Space Dup (0120730-MSDI) <br />Source. W012167 -M <br />Prepared <br />& Analyzed. 19 -Dec -00 <br />EWnzcne <br />102 <br />0 500 <br />ugIl <br />100 <br />ND 102 <br />60-140 <br />0 985 25 <br />Toluene <br />103 <br />0 500 <br />" <br />100 <br />ND 103 <br />60-140 <br />0 976 25 <br />bhy ewew <br />105 <br />0 500 <br />100 <br />ND 105 <br />60-140 <br />192 25 <br />Xylenes (total) <br />311 <br />0 500 <br />300 <br />ND '104 <br />60-140 <br />0 322 25 <br />Methyl tet -butyl ether <br />114 <br />250 <br />100 <br />ND 114 <br />60-140 <br />0 873 25 <br />Swrogats a a a -Tri lwor+otohwene <br />909 <br />Ido <br />909 <br />60-140 <br />Sequoia Analytical - Walnut (j,eek The read& in tks report 4Pply to Ore &=Wks analjzsd in accardwros with Ors chain of <br />cuat d° dacu wnt Tina analytraal r,eporr must be raprodaecsd In ita aedrxty <br />Page 16 of 17 <br />