ETHANE
                                                                         HEXA-
                                                                        CHLORO-
                                     ACRYLO-  CHLORO- CHLORO-  ETHYL-    WATER
                                     NITRILE  BENZENE  ETHANE  BENZENE  UNFLTRD
SITE NUMBER STATION   NUMBER  DATE    TOTAL    TOTAL   TOTAL    TOTAL   RECOVER
                                      (UG/L)  (UG/L)   (UG/L)  (UG/L)   (UG/L)
                                     (34215)  (34301) (34311)  (34371)  (34396)

     1          02290769     11-21-97   --      --       --      --       --
     2       252100080340000 11-20-97   --      --       --      --       --
     3       252144080313800 11-19-97   --      --       --      --       --
     4       252213080313100 11-21-97   --      --       --      --       --
     5       252414080333200 11-16-97 <2.45    <.056   <.240    <.060    <.724
     5       252414080333200 11-17-97 <2.45    <.056   <.240    <.060    <.724
     5       252414080333200 11-18-97 <2.45    <.056   <.240    <.060    <.724
     5       252414080333200 11-19-97 <2.45    <.056   <.240    <.060    <.724
     5       252414080333200 11-20-97 <2.45    <.056   <.240    <.060    <.724
     6       252421080333201 11-17-97 <1.23    <.028   <.120    <.030    <.362
     7       252424080333801 11-16-97 <1.23    <.028   <.120    <.030    <.362
     8       252428080312700 11-18-97   --      --       --      --       --
     9       252428080312801 11-14-97 <4.90    <.112   <.480    <.120    <1.45
     10      252505080302501 1-28-98  <1.23    <.028   <.120    <.030    <.362
     11      252523080352500 11-17-97   --      --       --      --       --
     12      252557080333700 11-19-97   --      --       --      --       --
     13      252624080302901 1-28-98  <1.23    <.028   <.120    <.030    <.362
     14      252651080323001 11-13-97 <1.23    <.028   <.120    <.030    <.362
     15      252700080333500 11-19-97   --      --       --      --       --
     15      252700080333500 11-20-97 <2.45    <.056   <.240    <.060    <.724
     16      252716080290601 1-27-98  <1.23    <.028   <.120    <.030    <.362
     17      252740080334901 11-16-97 <1.23    <.028   <.120    <.030    <.362
     18      252742080334301 11-18-97 <1.23    <.028   <.120    <.030    <.362
     19      252842080290501 1-27-98  <1.23    <.028   <.120    <.030    <.362
     20      252845080334500 11-14-97 <2.45    <.056   <.240    <.060    <.724
     20      252845080334500 11-17-97 <2.45    <.056   <.240    <.060    <.724
     20      252845080334500 11-18-97 <2.45    <.056   <.240    <.060    <.724
     20      252845080334500 11-19-97 <2.45    <.056   <.240    <.060    <.724
     20      252845080334500 11-20-97 <2.45    <.056   <.240    <.060    <.724
     21      252850080331801 11-17-97 <1.23    <.028   <.120    <.030    <.362
     22      252851080323300 11-19-97   --      --       --      --       --
     22      252851080323300 11-20-97 <2.45    <.056   <.240    <.060    <.724
     23      252940080261204 1-29-98  <1.23    <.028   <.120    <.030    <.362
     24      252951080251201 1-29-98  <1.23    <.028   <.120    <.030    <.362