BENZENE                 BENZENE BENZENE
                                       O-DI-           TRANS-  1,2,4- 1,3-DI-
                                      CHLORO- 1,2-DI- 1,2-DI-   TRI-  CHLORO-
                                       WATER  CHLORO- CHLORO- CHLORO-  WATER
                                      UNFLTRD PROPANE  ETHENE WAT UNF UNFLTRD
 SITE NUMBER STATION   NUMBER   DATE    REC    TOTAL   TOTAL    REC     REC
                                       (UG/L)  (UG/L)  (UG/L)  (UG/L)  (UG/L)
                                      (34536) (34541) (34546) (34551) (34566)

      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 <.096   <.136   <.064   <.376   <.108
      5       252414080333200 11-17-97 <.096   <.136   <.064   <.376   <.108
      5       252414080333200 11-18-97 <.096   <.136   <.064   <.376   <.108
      5       252414080333200 11-19-97 <.096   <.136   <.064   <.376   <.108
      5       252414080333200 11-20-97 <.096   <.136   <.064   <.376   <.108
      6       252421080333201 11-17-97 <.048   <.068   <.032   <.188   <.054
      7       252424080333801 11-16-97 <.048   <.068   <.032   <.188   <.054
      8       252428080312700 11-18-97   --      --      --      --      --
      9       252428080312801 11-14-97 <.192   <.272   <.128   <.752   <.216
     10       252505080302501 1-28-98  <.048   <.068   <.032   <.188   <.054
     11       252523080352500 11-17-97   --      --      --      --      --
     12       252557080333700 11-19-97   --      --      --      --      --
     13       252624080302901 1-28-98  <.048   <.068   <.032   <.188   <.054
     14       252651080323001 11-13-97 <.048   <.068   <.032   <.188   <.054
     15       252700080333500 11-19-97   --      --      --      --      --
     15       252700080333500 11-20-97 <.096   <.136   <.064   <.376   <.108
     16       252716080290601 1-27-98  <.048   <.068   <.032   <.188   <.054
     17       252740080334901 11-16-97 <.048   <.068   <.032   <.188   <.054
     18       252742080334301 11-18-97 <.048   <.068   <.032   <.188   <.054
     19       252842080290501 1-27-98  <.048   <.068   <.032   <.188   <.054
     20       252845080334500 11-14-97 <.096   <.136   <.064   <.376   <.108
     20       252845080334500 11-17-97 <.096   <.136   <.064   <.376   <.108
     20       252845080334500 11-18-97 <.096   <.136   <.064   <.376   <.108
     20       252845080334500 11-19-97 <.096   <.136   <.064   <.376   <.108
     20       252845080334500 11-20-97 <.096   <.136   <.064   <.376   <.108
     21       252850080331801 11-17-97 <.048   <.068   <.032   <.188   <.054
     22       252851080323300 11-19-97   --      --      --      --      --
     22       252851080323300 11-20-97 <.096   <.136   <.064   <.376   <.108
     23       252940080261204 1-29-98  <.048   <.068   <.032   <.188   <.054
     24       252951080251201 1-29-98  <.048   <.068   <.032   <.188   <.054