NITRO-  NITRO-  NITRO-  NITRO-  NITRO-
                                         GEN,    GEN,    GEN,  GEN,AM-   GEN,
                                       AMMONIA NITRITE NITRATE MONIA + ORGANIC
                                         DIS-    DIS-    DIS-  ORGANIC   DIS-
                                        SOLVED  SOLVED  SOLVED   DIS.   SOLVED
 SITE NUMBER  STATION NUMBER     DATE   (MG/L   (MG/L   (MG/L   (MG/L   (MG/L
                                        AS N)   AS N)   AS N)   AS N)   AS N)
                                       (00608) (00613) (00618) (00623) (00607)


      1           02290769     11-21-97  .018    .001    .042    .35     .33
      2        252100080340000 11-20-97   --      --      --      --      --
      3        252144080313800 11-19-97  .025    .003    .020    .33     .30
      4        252213080313100 11-21-97  .027    .001    .035    .35     .32
      5        252414080333200 11-16-97  .094    .002    .052    .46     .36
      5        252414080333200 11-17-97  .097    .003    .052    .42     .32
      5        252414080333200 11-18-97  .129    .005    .034    .48     .35
      5        252414080333200 11-19-97  .159    .002    .029    .49     .33
      5        252414080333200 11-20-97  .160    .003    .025    .50     .34
      6        252421080333201 11-17-97  .004    .002    .100    .19     .18
      7        252424080333801 11-16-97  .006    .061    .319    .23     .23
      8        252428080312700 11-18-97  .069    .002    .052    .40     .33
      9        252428080312801 11-14-97  .250   <.001     --     .68     .43
      10       252505080302501 1-28-98  0.127   0.013   0.437    0.12     --
      11       252523080352500 11-17-97  .206    .004    .061    .64     .43
      12       252557080333700 11-19-97  .131    .002    .005    .54     .41
      13       252624080302901 1-28-98  0.051   <.010     --     0.14    0.09
      14       252651080323001 11-13-97  .006    .039    3.39    .19     .18
      15       252700080333500 11-19-97  .167    .008    .008    .52     .36
      15       252700080333500 11-20-97  .158    .005    .010    .53     .38
      16       252716080290601 1-27-98  <.020   0.028    1.54    0.14     --
      17       252740080334901 11-16-97  .162    .001    .004    .43     .26
      18       252742080334301 11-18-97  .205    .001    .004    .43     .22
      19       252842080290501 1-27-98  <.020   <.010     --     0.16     --
      20       252845080334500 11-14-97  .122    .007    .019    .53     .41
      20       252845080334500 11-17-97  .105    .013    .039    .47     .37
      20       252845080334500 11-18-97  .123    .012    .027    .50     .37
      20       252845080334500 11-19-97  .128    .012    .013    .58     .45
      20       252845080334500 11-20-97  .124    .005    .006    .55     .43
      21       252850080331801 11-17-97  .057    .001     --     .33     .28
      22       252851080323300 11-19-97  .035    .018    .051    .40     .36
      22       252851080323300 11-20-97  .027    .016    .047    .39     .36
      23       252940080261204 1-29-98  0.031   <.010     --     <.10     --
      24       252951080251201 1-29-98  0.031   <.010     --     <.10     --