CHLORO-                  TRI-
                                               DI-            VINYL CHLORO-
                                     BROMO-  BROMO-           CHLO-  ETHYL-
                                      FORM   METHANE  BENZENE  RIDE   ENE
SITE NUMBER STATION   NUMBER  DATE    TOTAL   TOTAL    TOTAL  TOTAL  TOTAL
                                     (UG/L)  (UG/L)   (UG/L)  (UG/L) (UG/L)
                                     (32104) (32105)  (34030) (39175(39180)

     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 <.208   <.364    <.064  <.224  <.076
     5       252414080333200 11-17-97 <.208   <.364    <.064  <.224  <.076
     5       252414080333200 11-18-97 <.208   <.364    <.064  <.224  <.076
     5       252414080333200 11-19-97 <.208   <.364    <.064  <.224  <.076
     5       252414080333200 11-20-97 <.208   <.364    <.064  <.224  <.076
     6       252421080333201 11-17-97 <.104   <.182    <.032  <.112  <.038
     7       252424080333801 11-16-97 <.104   <.182    <.032  <.112  <.038
     8       252428080312700 11-18-97  --      --       --      --     --
     9       252428080312801 11-14-97 <.416   <.728    <.128  <.448  <.152
     10      252505080302501 1-28-98  0.945   0.304    <.032  <.112  <.038
     11      252523080352500 11-17-97  --      --       --      --     --
     12      252557080333700 11-19-97  --      --       --      --     --
     13      252624080302901 1-28-98  <.104   <.182    <.032  <.112  <.038
     14      252651080323001 11-13-97 <.104   <.182    <.032  <.112  <.038
     15      252700080333500 11-19-97  --      --       --      --     --
     15      252700080333500 11-20-97 <.208   <.364    <.064  <.224  <.076
     16      252716080290601 1-27-98  <.104   <.182    <.032  <.112  <.038
     17      252740080334901 11-16-97 <.104   <.182    <.032  <.112  <.038
     18      252742080334301 11-18-97 <.104   <.182    <.032  <.112  <.038
     19      252842080290501 1-27-98  <.104   <.182    <.032  <.112  <.038
     20      252845080334500 11-14-97 <.208   <.364    <.064  <.224  <.076
     20      252845080334500 11-17-97 <.208   <.364    <.064  <.224  <.076
     20      252845080334500 11-18-97 <.208   <.364    <.064  <.224  <.076
     20      252845080334500 11-19-97 <.208   <.364    <.064  <.224  <.076
     20      252845080334500 11-20-97 <.208   <.364    <.064  <.224  <.076
     21      252850080331801 11-17-97 <.104   <.182    <.032  <.112  <.038
     22      252851080323300 11-19-97  --      --       --      --     --
     22      252851080323300 11-20-97 <.208   <.364    <.064  <.224  <.076
     23      252940080261204 1-29-98  E.039   <.182    <.032  <.112  <.038
     24      252951080251201 1-29-98  0.471   0.412    <.032  <.112  <.038