Laserfiche WebLink
Concentration(ppb) <br /> o 0 0 . <br /> 0 0 0 0 <br /> Jan-89 <br /> May-89 € <br /> Sep-89 <br /> Jan-90 # <br /> May-90 <br /> Sep-90 <br /> Jan-91 <br /> May-91 <br /> L <br /> Sep-91 <br /> Jan-92 <br /> E <br /> May-92 E <br /> Sep-92 <br /> Jan-93 <br /> May-93 <br /> Sep-93 <br /> Jan-94 E <br /> May-94 E C <br /> Sep-94 € n <br /> E O cv <br /> Jan-95 rt <br /> Z May-95 yr �; <br /> N <br /> Sep 95 w <br /> m o Jan-96 y <br /> � May-96 m � <br /> Sep-96 r <br /> Jan-97 E <br /> May-97 A <br /> Sep-97 <br /> Jan-98 <br /> May-98 <br /> Sep-98 <br /> Jan-99 <br /> May-99 E <br /> Sep-99 <br /> Jan-00 E <br /> r <br /> May-00 € <br /> Sep-00 <br /> Jan-01 E <br /> May-01 # <br /> Sep-01 r <br /> Jan-02 <br /> May-02 <br /> Sep-02 <br /> Jan-03 • <br /> May-03 <br />