123-TRI ETHANE,  1,2,3-   1,2-
                                        METHYL CHLORO-  1112-    TRI-  DIBROMO
                                        IODIDE PROPANE  TETRA-  CHLORO  ETHANE
                                        WATER   WATER  CHLORO- BENZENE  WATER
                                       UNFLTRD  WHOLE  WAT UNF WAT, WH  WHOLE
 SITE NUMBER  STATION   NUMBER   DATE  RECOVER  TOTAL    REC     REC    TOTAL
                                        (UG/L)  (UG/L)  (UG/L)  (UG/L)  (UG/L)
                                       (77424) (77443) (77562) (77613) (77651)

      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 <.152   <.140   <.088   <.532   <.072
      5        252414080333200 11-17-97 <.152   <.140   <.088   <.532   <.072
      5        252414080333200 11-18-97 <.152   <.140   <.088   <.532   <.072
      5        252414080333200 11-19-97 <.152   <.140   <.088   <.532   <.072
      5        252414080333200 11-20-97 <.152   <.140   <.088   <.532   <.072
      6        252421080333201 11-17-97 <.076   <.070   <.044   <.266   <.036
      7        252424080333801 11-16-97 <.076   <.070   <.044   <.266   <.036
      8        252428080312700 11-18-97   --      --      --      --      --
      9        252428080312801 11-14-97 <.304   <.280   <.176   <1.06   <.144
      10       252505080302501 1-28-98  <.076   <.070   <.044   <.266   <.036
      11       252523080352500 11-17-97   --      --      --      --      --
      12       252557080333700 11-19-97   --      --      --      --      --
      13       252624080302901 1-28-98  <.076   <.070   <.044   <.266   <.036
      14       252651080323001 11-13-97 <.076   <.070   <.044   <.266   <.036
      15       252700080333500 11-19-97   --      --      --      --      --
      15       252700080333500 11-20-97 <.152   <.140   <.088   <.532   <.072
      16       252716080290601 1-27-98  <.076   <.070   <.044   <.266   <.036
      17       252740080334901 11-16-97 <.076   <.070   <.044   <.266   <.036
      18       252742080334301 11-18-97 <.076   <.070   <.044   <.266   <.036
      19       252842080290501 1-27-98  <.076   <.070   <.044   <.266   <.036
      20       252845080334500 11-14-97 <.152   <.140   <.088   <.532   <.072
      20       252845080334500 11-17-97 <.152   <.140   <.088   <.532   <.072
      20       252845080334500 11-18-97 <.152   <.140   <.088   <.532   <.072
      20       252845080334500 11-19-97 <.152   <.140   <.088   <.532   <.072
      20       252845080334500 11-20-97 <.152   <.140   <.088   <.532   <.072
      21       252850080331801 11-17-97 <.076   <.070   <.044   <.266   <.036
      22       252851080323300 11-19-97   --      --      --      --      --
      22       252851080323300 11-20-97 <.152   <.140   <.088   <.532   <.072
      23       252940080261204 1-29-98  <.076   <.070   <.044   <.266   <.036
      24       252951080251201 1-29-98  <.076   <.070   <.044   <.266   <.036