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_. �''irrar_.�--,. ._- a _�--Sf-•-1:,i"-.�.r_,' - -3. �_•- ='`- �'- '— - +<_, T -_r a� ��-r=- cr r a�2 Z i TABLE 2 ANALYTICAL RESULTS OF SOIL VAPOR SAMPLES Former STOCKTON PLATING Facility 4 632 South El Dorado, Stockton; Califom a a � 1� a Sample I D TPH as - Ethyl- MTBE " ` Benzene Tolueneu Xylenes � i Date Gasoline benzene 1 i _ Pre Catalytic Oxidation Remediation 12-09-03 2,600 ` <10 6.0 160 S2 320 ' <5 0 2.4 51 25 150 12-30-03 1,200 01-26-04 580 <2 5 0.72 12 6.8 47 02-'23-04, 200 <2 5 <0 25 0.84- 1.2 27 ' r,m 04-27-04 <50 <0 5 �0 5 �<O 5 <0 5 <1 0 05-18-04 130 <2 5 1.0 1.2 0.45 6.2 06-22-04 <25 <2 5 <0 25 <0 25 <0 25 0.39 07-22-04 <25 - <0 25 <0 25 <0 25 <0 25 t Post Catalytic Oxidation Remediation 12-09-03 450 <2 5 0.92 25 - 8.1 46 ' ' 12-30-03 52 <2 5 <0 25 1.7 0.5 3.7 ` - 01-26-04 '73 <2 5 <0 25 0.66 0.31 3.1 ' 02-23-04 <25 <2 5 <0 25 <0 25 <0 25 �-_0 25 03-10-04 - - - - 04-27-04 <50 <0 5 <0 5 <0 5 <0 5 <1 0 05-18-04 <25 1 <2 5 ' <0 25 <0 25 <0 25 <0 25 06-22-04 r <25 <2 5 " , <0 25 <0 25 <0 25 <0 25 , � 07-22-04 v <25 <0 25 <0 25 <0 25 <0 25 <025 0.66 , , <0 25 0.43 08-02-04, 78 3' r 08-18-04 ;44 = <0 25 <0 2S <0 25 1.4 09-16-04' ^ , '63 0.31 0.42 � �<0 25 1.0 _ d ' z 10-25-04 150 :�2 5 <0 25 1.2 <0 25 0.46 s <25 <2+5 <0 25 <0 25 ` '<O 25, <0 25 10-27-04 ,a 10-28-04 , 45 , , I - ' <0 25 <0 25 <0 25 ; <0 25 - 11-03-04 40`='' <2 5 <0 25 0.25 ' <0 25 0.37 ` 12-15-04 <25 x <0 25 <0 2S <0 25 <0 25 <0 25 L 01-18-05` - <25. 1 a - <0 25 <0 25 <0 25 <0 25 ' 01-25-05" , ,�, <0 25 ' <0 25 <0 25 <0 25 <0 25 �, ,��5 02-17-05 l <25 <2 5 <0 25 <0 25 CO 25 <0 25 ' r Notess , tMTBE'methyl tertiary butyl ether r D s µg/l micrograms per liter i - not analyzed ' u , - n Advanced GeolN,nvrronmental,Inc ' ' F