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-� � �� i i i i � � i i i i 1• i i i _ TABLE 3 ANALYTICAL RESULTS OF GROUND WATER SAMPLES SIERRA LUMBER 375 West Hazelton Avenue, Stockton, Callfomla Ground Screen Well Date Water Interval TPH-g Benzene Tolueneth Ethyl Xylenes MTBE MTBE benzene 8020 8260 DIPE TAME ETBE TBA I D De (ft bs ) 08-25-98 1803 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<5 ND<l ND<1 ND<1 ND<l ND<5 09-16-98 1843 ND<50 ND<O 5 ND<0 5 ND<O 5 ND<O 5 ND<5 ND<l ND<1 ND<1 ND<1 ND<5 12-10-98 1921 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<5 ND<l ND<1 ND<1 ND<l ND<5 MW-7 03-15-99 1776 9 to 34 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<5 ND<1 ND<1 ND<1 ND<l ND<5 06-22-99 1850 ND<50 065 2 ND<O 5 19 ND<5 ND<1 ND<1 ND<1 ND<l ND<5 09-10-99 1943 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<5 ND<l ND 04-28-00 1763 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<5 ND<1 ND 06-22-99 1750 110` 11 2 3 ND<0 5 4 ND<5 53 ND<1 ND<1 ND<1 67 09-10-99 1857 ND<50 ND<0 5 ND<O 5 ND<O 5 ND<O 5 ND<5 34 4 7 ND<1 ND<1 ND<5 04-28-00 1673 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<5 19 19 ND<1 ND<1 82 01-18-01 1866 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<5 22 2.3 ND<1 ND<1 ND<5 07-24-01 1897 ND<50 ND<0 5 ND<O 5 ND<O 5 ND<O 5 ND<5 21 12 ND<1 ND MW-8 05-30-02 1877 l5 to 35 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<5 53 19 ND<1 ND<1 ND<5 12-03-02 2075 ND<50 ND<0 5 ND<O 5 ND<O 5 ND<O 5 ND<5 4.3 13 ND<O 5 ND-<0 5 ND<5 12-07-04 2124 1 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 6 - ND<1 ND<1 ND<1 ND<1 ND<10 03-24-05 1843 ND<50 N1X0 5 ND<O 5 ND<O 5 ND<O 6 - ND<1 ND<1 ND<1 ND<l ND<10 11 1 06-24-05 1 1792 1 ND<50 1 ND<O 5 ND<O 5 ND<O 5 ND<O 6 - ND<l ND<1 ND<1 ND<l ND<l0 Notes All units reported asµg/l(micrograms per liter or parts per billion) TPH-g total petroleum hydrocarbons quantified as gasoline DIPE di-isopropyl ether ETBE ethyl tertiary butyl ether TAME tertiary amyl methyl ether TBA tertiary butanol alcohol MTBE methyl tertiary butyl ether ND not detected ' unmodified or weakly modified gasoline is significant heavier gasoline range compounds are significant ' one to a few isolated peaks are significant,no recognizable pattern < indicates constituents were not detected at a concentration greater than the reporting lima shown Advanced GeoEnvrronmental,Inc.