WATER-QUALITY ASSESSMENT OF THE SOUTH PLATTE RIVER BASIN, COLORADO, NEBRASKA, AND WYOMING -- PHYSICAL, CHEMICAL, AND BIOLOGICAL DATA, FISCAL YEARS 1993-95

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                                  06731000        - ST. VRAIN CREEK AT MOUTH, NEAR PLATTEVILLE, CO.


                                   WATER-QUALITY DATA, CALENDAR YEAR JANUARY 1993 TO DECEMBER 1993

                                                                                                                    DIS-
                                                                                                                  CHARGE,
                                                                                                                   INST.
                                    LAT-           LONG-                                         HYDRO-  TEMPER-   CUBIC
                                     I-             I-      MEDIUM   SAMPLE                      LOGIC    ATURE     FEET
                DATE      TIME      TUDE           TUDE      CODE     TYPE     STATE   COUNTY    EVENT    WATER     PER
                                                                                                         (DEG C)   SECOND
                                                                                                         (00010)  (00061)

            APR
              05...       1145   40 15 29 N   104 52 45 W       9       9          08   123        9      10.000   135.00
            MAY
              03...       1030   40 15 29 N   104 52 45 W       9       9          08   123        9      13.400   118.00
            JUN
              01...       1135   40 15 29 N   104 52 45 W       9       9          08   123        9      21.300   284.00
              18...       1210   40 15 29 N   104 52 45 W       9       9          08   123        9      13.400   1192.0
            JUL
              14...       1020   40 15 29 N   104 52 45 W       9       9          08   123        9      18.600   570.00
            AUG
              04...       1310   40 15 29 N   104 52 45 W       9       9          08   123        9      20.400   295.00
            SEP
              01...       1025   40 15 29 N   104 52 45 W       9       9          08   123        9      16.800   288.00
            OCT
              20...       1255   40 15 29 N   104 52 45 W       9       7          08   123        9      11.000   155.00
            NOV
              10...       1230   40 15 29 N   104 52 45 W       9       9          08   123        9      5.8000   176.00
            DEC
              17...       1215   40 15 29 N   104 52 45 W       9       9          08   123        9      1.0000   169.00



                                   WATER-QUALITY DATA, CALENDAR YEAR JANUARY 1993 TO DECEMBER 1993




                                            PH      ALKA-    NITRO-   NITRO-   NITRO-   NITRO-   NITRO-
                         SPE-              WATER   LINITY     GEN,     GEN,   GEN,AM-  GEN,AM-    GEN,             PHOS-
                         CIFIC             WHOLE   WAT DIS  AMMONIA  NITRITE  MONIA +  MONIA +  NO2+NO3   PHOS-   PHORUS
                         CON-    OXYGEN,   FIELD   TOT FET    DIS-     DIS-   ORGANIC  ORGANIC    DIS-   PHORUS     DIS-
                         DUCT-     DIS-   (STAND-   FIELD    SOLVED   SOLVED   DIS.     TOTAL    SOLVED   TOTAL    SOLVED
                DATE     ANCE     SOLVED    ARD    MG/L AS   (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L
                        (US/CM)   (MG/L)   UNITS)   CACO3    AS N)    AS N)    AS N)    AS N)    AS N)    AS P)    AS P)
                        (00095)  (00300)  (00400)  (00418)  (00608)  (00613)  (00623)  (00625)  (00631)  (00665)  (00666)

            APR
              05...      1268.0   9.6000   8.0200   205.00  0.17000  0.11000  0.90000   1.4000   3.4000   1.1000  0.82000
            MAY
              03...      1360.0   8.8000   8.0900   202.00  0.20000  0.16000  0.80000   1.2000   4.5000   1.0000  0.87000
            JUN
              01...      835.00   6.8000   8.2000   147.00  0.06000  0.06000  0.40000  0.50000   2.2000  0.40000  0.36000
              18...      507.00   7.0000   7.8600   87.000  0.33000  0.05000  0.70000  0.90000   1.2000  0.22000  0.15000
            JUL
              14...      740.00   6.4000   8.1000   116.00  0.10000  0.06000  0.50000   1.0000   1.6000  0.74000  0.27000
            AUG
              04...      1240.0   8.1000   8.1000   197.00  0.06000  0.05000  0.70000  0.60000   2.5000  0.33000  0.31000
            SEP
              01...      1360.0   7.8000   8.1000   202.00  0.05000  0.05000  0.40000  0.40000   2.9000  0.26000  0.24000
            OCT
              20...      1380.0   11.600   8.3000   245.00  0.15000  0.07000  0.80000   1.2000   4.1000  0.58000  0.45000
            NOV
              10...      1310.0   13.800   8.3000   225.00  0.41000  0.09000  0.80000   1.2000   4.9000  0.67000  0.58000
            DEC
              17...      1270.0   13.900   7.9000   207.00  0.67000  0.10000   1.2000   1.6000   5.4000  0.97000  0.81000



                                   WATER-QUALITY DATA, CALENDAR YEAR JANUARY 1993 TO DECEMBER 1993




                         PHOS-            CARBON,
                        PHORUS   CARBON,  ORGANIC            MAGNE-            POTAS-   CHLO-             FLUO-   SILICA,
                         ORTHO,  ORGANIC   SUS-    CALCIUM    SIUM,  SODIUM,    SIUM,   RIDE,   SULFATE   RIDE,    DIS-
                         DIS-     DIS-    PENDED    DIS-      DIS-    DIS-      DIS-    DIS-     DIS-      DIS-    SOLVED
                        SOLVED   SOLVED    TOTAL    SOLVED   SOLVED  SOLVED    SOLVED   SOLVED   SOLVED   SOLVED   (MG/L
                DATE    (MG/L     (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L     AS
                        AS P)     AS C)    AS C)    AS CA)   AS MG)   AS NA)   AS K)    AS CL)  AS SO4)   AS F)    SIO2)
                        (00671)  (00681)  (00689)  (00915)  (00925)  (00930)  (00935)  (00940)  (00945)  (00950)  (00955)

            APR
              05...     0.83000   5.4000     --     76.000   57.000   100.00   6.8000   49.000   370.00  0.80000   5.1000
            MAY
              03...     0.88000   5.7000  0.80000   89.000   58.000   120.00   6.7000   56.000   410.00   1.0000   7.6000
            JUN
              01...     0.33000   5.0000   5.7000   59.000   35.000   63.000   3.8000   21.000   250.00  0.80000   8.8000
              18...     0.14000   5.8000  >5.7000   32.000   19.000   30.000   4.3000   13.000   140.00  0.40000   6.5000
            JUL
              14...     0.23000   5.1000   5.0000   47.000   32.000   52.000   4.7000   15.000   230.00  0.70000   6.6000
            AUG
              04...     0.26000   5.0000  0.30000   81.000   60.000   99.000   4.6000   28.000   430.00  0.80000   7.3000
            SEP
              01...     0.22000   5.1000   1.8000   90.000   65.000   110.00   4.0000   25.000   500.00   1.0000   7.8000
            OCT
              20...     0.43000   6.3000   1.1000   88.000   62.000   100.00   8.3000   44.000   430.00   1.0000   7.5000
            NOV
              10...     0.59000   4.8000  0.50000   91.000   62.000   110.00   5.0000   45.000   420.00   1.0000   6.5000
            DEC
              17...     0.74000   4.4000   1.3000   83.000   57.000   100.00   4.5000   40.000   380.00   1.0000   7.1000



                                   WATER-QUALITY DATA, CALENDAR YEAR JANUARY 1993 TO DECEMBER 1993





                                  BERYL-            CHRO-                                        MANGA-   MOLYB-
                        BARIUM,   LIUM,   CADMIUM   MIUM,   COBALT,  COPPER,   IRON,    LEAD,    NESE,    DENUM,  NICKEL,
                         DIS-     DIS-      DIS-    DIS-     DIS-     DIS-      DIS-     DIS-     DIS-     DIS-    DIS-
                        SOLVED    SOLVED   SOLVED   SOLVED  SOLVED    SOLVED   SOLVED   SOLVED   SOLVED   SOLVED   SOLVED
                DATE     (UG/L    (UG/L    (UG/L    (UG/L    (UG/L    (UG/L    (UG/L    (UG/L    (UG/L    (UG/L    (UG/L
                         AS BA)   AS BE)   AS CD)   AS CR)   AS CO)   AS CU)   AS FE)   AS PB)   AS MN)   AS MO)   AS NI)
                        (01005)  (01010)  (01025)  (01030)  (01035)  (01040)  (01046)  (01049)  (01056)  (01060)  (01065)

            APR
              05...        --       --       --       --       --       --     5.0000     --     89.000     --       --
            MAY
              03...        --       --       --       --       --       --     11.000     --     130.00     --       --
            JUN
              01...        --       --       --       --       --       --     21.000     --     39.000     --       --
              18...        --       --       --       --       --       --     66.000     --     70.000     --       --
            JUL
              14...      39.000  <1.0000  <1.0000   1.0000  <1.0000   3.0000   22.000  <1.0000   11.000   4.0000   2.0000
            AUG
              04...      56.000  <1.0000  <1.0000   6.0000  <1.0000   6.0000   10.000  <1.0000   20.000   6.0000   3.0000
            SEP
              01...      51.000  <1.0000  <1.0000  <1.0000  <1.0000   8.0000   4.0000  <1.0000   20.000   6.0000   3.0000
            OCT
              20...      49.000  <1.0000  <1.0000  <1.0000  <1.0000   4.0000   11.000  <1.0000   62.000   7.0000   4.0000
            NOV
              10...      39.000  <1.0000  <1.0000  <1.0000  <1.0000   3.0000   9.0000  <1.0000   46.000   5.0000   4.0000
            DEC
              17...      36.000  <1.0000  <1.0000  <1.0000  <1.0000   4.0000   12.000  <1.0000   61.000   5.0000   4.0000



                                   WATER-QUALITY DATA, CALENDAR YEAR JANUARY 1993 TO DECEMBER 1993




                                                                              SOLIDS,                             QUALITY
                                           ANTI-    ALUM-    SELE-   URANIUM  RESIDUE                             ASSUR-
                        SILVER,   ZINC,    MONY,    INUM,    NIUM,   NATURAL  AT 180             SEDI-             ANCE
                          DIS-     DIS-     DIS-     DIS-     DIS-     DIS-    DEG. C            MENT,    REP-     DATA
                         SOLVED   SOLVED   SOLVED   SOLVED   SOLVED   SOLVED    DIS-   SAMPLE    SUS-    LICATE   INDICA-
                DATE     (UG/L    (UG/L    (UG/L    (UG/L    (UG/L    (UG/L    SOLVED  PURPOSE   PENDED   TYPE     TOR
                         AS AG)   AS ZN)   AS SB)   AS AL)   AS SE)   AS U)    (MG/L)   CODE     (MG/L)  (CODE)    CODE
                        (01075)  (01090)  (01095)  (01106)  (01145)  (22703)  (70300)  (71999)  (80154)  (99105)  (99111)

            APR
              05...        --       --       --       --       --       --     870.00     --     61.000     --       --
            MAY
              03...        --       --       --       --       --       --     984.00     --     25.000     --       --
            JUN
              01...        --       --       --       --       --       --     548.00     --     238.00     --       --
              18...        --       --       --       --       --       --     294.00     --     561.00     --       --
            JUL
              14...     <1.0000   9.0000  <1.0000   12.000  <1.0000   9.0000   488.00     --     3370.0     --       --
            AUG
              04...     <1.0000   17.000  <1.0000   10.000   2.0000   19.000   886.00     --     98.000     --       --
            SEP
              01...     <1.0000   5.0000  <1.0000   12.000   2.0000   17.000   976.00     --     81.000     --       --
            OCT
              20...     <1.0000   7.0000  <1.0000   6.0000   2.0000   21.000   939.00   15.000   15.000   10.000   30.000
            NOV
              10...     <1.0000   7.0000  <1.0000   6.0000   2.0000   20.000   898.00     --     15.000     --       --
            DEC
              17...     <1.0000   9.0000  <1.0000   6.0000   3.0000   18.000   864.00     --     40.000     --       --



                                   WATER-QUALITY DATA, CALENDAR YEAR JANUARY 1994 TO DECEMBER 1994

                                                                                                                DIS-
                                                                                                              CHARGE,   SPE-
                                                                                                               INST.    CIFIC
                                LAT-           LONG-                                         HYDRO-  TEMPER-   CUBIC    CON-
                                 I-             I-      MEDIUM   SAMPLE                      LOGIC    ATURE     FEET    DUCT-
            DATE      TIME      TUDE           TUDE      CODE     TYPE     STATE   COUNTY    EVENT    WATER     PER     ANCE
                                                                                                     (DEG C)   SECOND  (US/CM)
                                                                                                     (00010)  (00061)  (00095)

           JAN
             07...    1350   40 15 29 N   104 52 45 W       9       9          08   123        9      1.6000   133.00   1270.0
           FEB
             11...    1040   40 15 29 N   104 52 45 W       9       9          08   123        9     0.40000   157.00   1165.0
           MAR
             01...    1120   40 15 29 N   104 52 45 W       9       9          08   123        9      4.9000   194.00   1120.0
           APR
             15...    1040   40 15 29 N   104 52 45 W       9       7          08   123        9      10.400   206.00   1090.0
             22...    1025   40 15 29 N   104 52 45 W       9       9          08   123        9      16.000   110.00   1240.0
           MAY
             10...    1100   40 15 29 N   104 52 45 W       9       9          08   123        9      13.700   345.00   598.00
           JUN
             01...    1215   40 15 29 N   104 52 45 W       9       9          08   123        9      18.300   504.00   500.00
           JUL
             08...    1135   40 15 29 N   104 52 45 W       9       7          08   123        9      18.600   217.00   1280.0
           AUG
             05...    0915   40 15 29 N   104 52 45 W       9       9          08   123        9      19.300   217.00   1310.0
             30...    1020   40 15 29 N   104 52 45 W       9       9          08   123        9      18.600   211.00   1320.0
           OCT
             03...    1120   40 15 29 N   104 52 45 W       9       9          08   123        9      13.700   134.00   1240.0
           NOV
             14...    1145   40 15 29 N   104 52 45 W       9       9          08   123        9      5.3000   129.00   1300.0
           DEC
             09...    1330   40 15 29 N   104 52 45 W       9       9          08   123        9     0.80000   164.00   1200.0



                                   WATER-QUALITY DATA, CALENDAR YEAR JANUARY 1994 TO DECEMBER 1994




                               PH      ALKA-    NITRO-   NITRO-   NITRO-   NITRO-   NITRO-                     PHOS-
                              WATER   LINITY     GEN,     GEN,   GEN,AM-  GEN,AM-    GEN,             PHOS-   PHORUS   CARBON,
                              WHOLE   WAT DIS  AMMONIA  NITRITE  MONIA +  MONIA +  NO2+NO3   PHOS-   PHORUS    ORTHO,  ORGANIC
                    OXYGEN,   FIELD   TOT FET    DIS-     DIS-   ORGANIC  ORGANIC    DIS-   PHORUS     DIS-    DIS-     DIS-
                      DIS-   (STAND-   FIELD    SOLVED   SOLVED   DIS.     TOTAL    SOLVED   TOTAL    SOLVED  SOLVED   SOLVED
            DATE     SOLVED    ARD    MG/L AS   (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L   (MG/L     (MG/L
                     (MG/L)   UNITS)   CACO3    AS N)    AS N)    AS N)    AS N)    AS N)    AS P)    AS P)   AS P)     AS C)
                    (00300)  (00400)  (00418)  (00608)  (00613)  (00623)  (00625)  (00631)  (00665)  (00666)  (00671)  (00681)

           JAN
             07...   12.700   8.2000   209.00  0.83000  0.09000   1.2000   1.8000   5.0000  0.90000  0.71000  0.74000   4.7000
           FEB
             11...   11.000   8.0000   203.00   1.4000  0.08000   1.8000   2.8000   4.0000   1.5000  0.66000  0.64000   4.3000
           MAR
             01...   12.700   8.3000   185.00   1.4000  0.14000   2.0000   2.9000   4.3000   1.2000  0.84000  0.83000   5.8000
           APR
             15...   9.2000     --       --    0.20000  0.14000  0.70000   1.3000   3.6000  0.84000  0.59000  0.57000     --
             22...     --     8.2000   191.00  0.44000  0.16000  0.90000   1.5000   3.4000  0.87000  0.67000  0.61000   5.4000
           MAY
             10...   7.5000   8.1000   111.00  0.18000  0.09000  0.50000   1.4000   2.3000  0.97000  0.27000  0.24000   5.0000
           JUN
             01...   8.5000   7.9000   90.000  0.06000  0.03000  0.40000   1.2000   1.5000  0.60000  0.23000  0.20000   4.9000
           JUL
             08...   8.2000   8.1000   183.00  0.10000  0.07000  0.60000   1.2000   2.8000  0.43000  0.23000  0.23000   5.4000
           AUG
             05...   6.8000   8.0000   204.00  0.07000  0.05000  0.50000   1.0000   3.0000  0.39000  0.25000  0.26000   4.8000
             30...   7.4000   8.2000   200.00  0.05000  0.04000  0.40000  0.50000   3.1000  0.32000  0.28000  0.26000   4.8000
           OCT
             03...   8.0000   8.1000     --    0.13000  0.08000  0.50000  0.80000   4.1000  0.47000  0.45000  0.48000   4.5000
           NOV
             14...   13.200   8.4000   230.00  0.14000  0.09000  0.50000  0.90000   4.2000  0.63000  0.56000  0.55000   4.6000
           DEC
             09...   11.900   8.2000   219.00   2.5000  0.09000   2.9000   3.8000   4.6000   1.1000  0.83000  0.83000   4.4000



                                   WATER-QUALITY DATA, CALENDAR YEAR JANUARY 1994 TO DECEMBER 1994




                    CARBON,
                    ORGANIC            MAGNE-            POTAS-   CHLO-             FLUO-   SILICA,            MANGA-   PROP-
                     SUS-    CALCIUM    SIUM,  SODIUM,    SIUM,   RIDE,   SULFATE   RIDE,    DIS-     IRON,    NESE,    CHLOR,
                    PENDED    DIS-      DIS-    DIS-      DIS-    DIS-     DIS-      DIS-    SOLVED    DIS-     DIS-    WATER,
                     TOTAL    SOLVED   SOLVED  SOLVED    SOLVED   SOLVED   SOLVED   SOLVED   (MG/L    SOLVED   SOLVED   DISS,
            DATE     (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L     AS      (UG/L    (UG/L    REC
                     AS C)    AS CA)   AS MG)   AS NA)   AS K)    AS CL)  AS SO4)   AS F)    SIO2)    AS FE)   AS MN)  (UG/L)
                    (00689)  (00915)  (00925)  (00930)  (00935)  (00940)  (00945)  (00950)  (00955)  (01046)  (01056)  (04024)

           JAN
             07...   1.2000   82.000   57.000   100.00   3.1000   40.000   380.00   1.0000   6.8000   13.000   74.000     --
           FEB
             11...   9.0000   74.000   53.000   90.000   5.4000   36.000   340.00   1.0000   8.1000   13.000   94.000     --
           MAR
             01...   3.4000   67.000   49.000   87.000   6.0000   34.000   330.00   1.0000   6.1000   11.000   91.000     --
           APR
             15...     --       --       --       --       --       --       --       --       --       --       --       --
             22...   1.4000   78.000   53.000   110.00   6.1000   49.000   360.00   1.0000   4.4000   4.0000   120.00     --
           MAY
             10...  >5.0000   42.000   22.000   41.000   3.4000   20.000   140.00  0.60000   7.5000   20.000   50.000 <0.00700
           JUN
             01...   3.7000   34.000   19.000   32.000   2.5000   13.000   130.00  0.50000   7.6000   77.000   20.000 <0.00700
           JUL
             08...   1.8000   86.000   62.000   100.00   4.6000   28.000   440.00   1.0000   7.2000   4.0000   31.000     --
           AUG
             05...   2.1000   89.000   64.000   110.00   4.7000   30.000   450.00   1.0000   8.3000   26.000   36.000     --
             30...   1.2000   90.000   61.000   100.00   4.1000   27.000   450.00   1.1000   7.0000   6.0000   29.000 <0.00700
           OCT
             03...   1.0000   84.000   55.000   97.000   6.0000   37.000   360.00   1.1000   7.9000   17.000   46.000     --
           NOV
             14...   1.2000   86.000   60.000   110.00   5.0000   37.000   400.00   1.2000   4.4000   30.000   62.000     --
           DEC
             09...   2.9000   73.000   51.000   90.000   7.9000   49.000   320.00   1.2000   8.0000   33.000   59.000     --



                                   WATER-QUALITY DATA, CALENDAR YEAR JANUARY 1994 TO DECEMBER 1994




                                                        DEETHYL                                                          PRO-
                     BUTYL-   BRO-     SI-      PRO-     ATRA-    CYANA-                             DICAMBA   MCPA,    POXUR,
                     ATE,     MACIL,  MAZINE,   METON,   ZINE,    ZINE,   FONOFOS   ALPHA             WATER,   WATER,   WATER,
                     WATER,   WATER,   WATER,   WATER,   WATER,   WATER,   WATER     BHC     P,P'     FLTRD,   FLTRD,   FLTRD,
                     DISS,    DISS,    DISS,    DISS,    DISS,    DISS,    DISS      DIS-     DDE    GF 0.7U  GF 0.7U  GF 0.7U
            DATE     REC      REC      REC      REC      REC      REC       REC    SOLVED   DISSOLV    REC      REC      REC
                    (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)    (UG/L)   (UG/L)   (UG/L)
                    (04028)  (04029)  (04035)  (04037)  (04040)  (04041)  (04095)  (34253)  (34653)  (38442)  (38482)  (38538)

           JAN
             07...     --       --       --       --       --       --       --       --       --       --       --       --
           FEB
             11...     --       --       --       --       --       --       --       --       --       --       --       --
           MAR
             01...     --       --       --       --       --       --       --       --       --       --       --       --
           APR
             15...     --       --       --       --       --       --       --       --       --       --       --       --
             22...     --       --       --       --       --       --       --       --       --       --       --       --
           MAY
             10... <0.00200     --   <0.00500  0.02700 E0.00500 <0.00400 <0.00300 <0.00200 <0.00600     --       --       --
           JUN
             01... <0.00200 <0.03500 <0.00500 E0.01500 E0.01300 <0.00400 <0.00300 <0.00200 <0.00600 <0.03500 <0.05000 <0.03500
           JUL
             08...     --       --       --       --       --       --       --       --       --       --       --       --
           AUG
             05...     --       --       --       --       --       --       --       --       --       --       --       --
             30... <0.00200 <0.03500 <0.00500  0.04300 E0.08400  0.04500 <0.00300 <0.00200 <0.00600 <0.03500 <0.05000 <0.03500
           OCT
             03...     --       --       --       --       --       --       --       --       --       --       --       --
           NOV
             14...     --       --       --       --       --       --       --       --       --       --       --       --
           DEC
             09...     --       --       --       --       --       --       --       --       --       --       --       --



                                   WATER-QUALITY DATA, CALENDAR YEAR JANUARY 1994 TO DECEMBER 1994




                     BENTA-            FLUO-
                      ZON,    2,4-DB  METURON                                                                  ATRA-
                     WATER,   WATER,   WATER,   CHLOR-             DI-     METO-    MALA-    PARA-     DI-     ZINE,
                     FLTRD,   FLTRD,   FLTRD,  PYRIFOS  LINDANE   ELDRIN  LACHLOR   THION,   THION,  AZINON,   WATER,   2,4-D,
                    GF 0.7U  GF 0.7U  GF 0.7U    DIS-    DIS-      DIS-    WATER     DIS-     DIS-     DIS-    DISS,     DIS-
            DATE      REC      REC      REC     SOLVED  SOLVED    SOLVED  DISSOLV   SOLVED   SOLVED   SOLVED   REC      SOLVED
                     (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)  (UG/L)    (UG/L)   (UG/L)   (UG/L)  (UG/L)    (UG/L)
                    (38711)  (38746)  (38811)  (38933)  (39341)  (39381)  (39415)  (39532)  (39542)  (39572)  (39632)  (39732)

           JAN
             07...     --       --       --       --       --       --       --       --       --       --       --       --
           FEB
             11...     --       --       --       --       --       --       --       --       --       --       --       --
           MAR
             01...     --       --       --       --       --       --       --       --       --       --       --       --
           APR
             15...     --       --       --       --       --       --       --       --       --       --       --       --
             22...     --       --       --       --       --       --       --       --       --       --       --       --
           MAY
             10...     --       --       --   <0.00400 <0.00400 <0.00100  0.01100 <0.00500 <0.00400 <0.00200  0.02800     --
           JUN
             01... <0.01400 <0.03500 <0.03500 <0.00400 <0.00400 <0.00100 0.004000 <0.00500 <0.00400  0.02800  0.04400  0.34000
           JUL
             08...     --       --       --       --       --       --       --       --       --       --       --       --
           AUG
             05...     --       --       --       --       --       --       --       --       --       --       --       --
             30... <0.01400 <0.03500 <0.03500 <0.00400 <0.00400 <0.00100  0.02200 <0.00500 <0.00400 <0.00200  0.15000 <0.03500
           OCT
             03...     --       --       --       --       --       --       --       --       --       --       --       --
           NOV
             14...     --       --       --       --       --       --       --       --       --       --       --       --
           DEC
             09...     --       --       --       --       --       --       --       --       --       --       --       --



                                   WATER-QUALITY DATA, CALENDAR YEAR JANUARY 1994 TO DECEMBER 1994




                                                 TRI-     PRO-     PIC-     ORY-   NORFLUR    NEB-     METH-    FEN-    ESFEN-
                                       ALA-    CLOPYR,   PHAM,    LORAM,   ZALIN,   AZON,    URON,    OMYL,    URON,    VAL-
                                       CHLOR,   WATER,   WATER,   WATER,   WATER,   WATER,   WATER,   WATER,   WATER,   ERATE,
                    2,4,5-T  SILVEX,   WATER,   FLTRD,   FLTRD,   FLTRD,   FLTRD,   FLTRD,   FLTRD,   FLTRD,   FLTRD,  WAT,FLT
                      DIS-     DIS-    DISS,   GF 0.7U  GF 0.7U  GF 0.7U  GF 0.7U  GF 0.7U  GF 0.7U  GF 0.7U  GF 0.7U  GF 0.7U
            DATE     SOLVED   SOLVED   REC,      REC      REC      REC      REC      REC      REC      REC      REC      REC
                     (UG/L)   (UG/L)  (UG/L)    (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)
                    (39742)  (39762)  (46342)  (49235)  (49236)  (49291)  (49292)  (49293)  (49294)  (49296)  (49297)  (49298)

           JAN
             07...     --       --       --       --       --       --       --       --       --       --       --       --
           FEB
             11...     --       --       --       --       --       --       --       --       --       --       --       --
           MAR
             01...     --       --       --       --       --       --       --       --       --       --       --       --
           APR
             15...     --       --       --       --       --       --       --       --       --       --       --       --
             22...     --       --       --       --       --       --       --       --       --       --       --       --
           MAY
             10...     --       --   <0.00200     --       --       --       --       --       --       --       --       --
           JUN
             01... <0.03500 <0.02100 <0.00200 <0.05000 <0.03500 <0.05000 <0.01900 <0.02400 <0.01500 <0.01700 <0.01300 <0.01900
           JUL
             08...     --       --       --       --       --       --       --       --       --       --       --       --
           AUG
             05...     --       --       --       --       --       --       --       --       --       --       --       --
             30... <0.03500 <0.02100 <0.00200 <0.05000 <0.03500 <0.05000 <0.01900 <0.02400 <0.01500 <0.01700 <0.01300 <0.01900
           OCT
             03...     --       --       --       --       --       --       --       --       --       --       --       --
           NOV
             14...     --       --       --       --       --       --       --       --       --       --       --       --
           DEC
             09...     --       --       --       --       --       --       --       --       --       --       --       --



                                   WATER-QUALITY DATA, CALENDAR YEAR JANUARY 1994 TO DECEMBER 1994




                                               DICHLOR  DICHLO-  CLOPYR-   CHLOR-  3HYDRXY    BRO-   ALDICA-   ACIFL-  SOLIDS,
                             DIURON,  DINOSEB   PROP,    BENIL,   ALID,    AMBEN,   CARBO-  MOXYNIL  RB SUL-  UORFEN   RESIDUE
                     DNOC     WATER,   WATER,   WATER,   WATER,   WATER,   WATER,   FURAN    WATER,  FOXIDE,   WATER,  AT 180
                    WAT,FLT   FLTRD,   FLTRD,   FLTRD,   FLTRD,   FLTRD,   FLTRD,  WAT,FLT   FLTRD,  WAT,FLT   FLTRD,   DEG. C
                    GF 0.7U  GF 0.7U  GF 0.7U  GF 0.7U  GF 0.7U  GF 0.7U  GF 0.7U  GF 0.7U  GF 0.7U  GF 0.7U  GF 0.7U    DIS-
            DATE      REC      REC      REC      REC      REC      REC      REC      REC      REC      REC      REC     SOLVED
                     (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (MG/L)
                    (49299)  (49300)  (49301)  (49302)  (49303)  (49305)  (49307)  (49308)  (49311)  (49314)  (49315)  (70300)

           JAN
             07...     --       --       --       --       --       --       --       --       --       --       --     885.00
           FEB
             11...     --       --       --       --       --       --       --       --       --       --       --     799.00
           MAR
             01...     --       --       --       --       --       --       --       --       --       --       --     744.00
           APR
             15...     --       --       --       --       --       --       --       --       --       --       --       --
             22...     --       --       --       --       --       --       --       --       --       --       --     816.00
           MAY
             10...     --       --       --       --       --       --       --       --       --       --       --     384.00
           JUN
             01... <0.03500 <0.02000 <0.03500 <0.03200 <0.02000 <0.05000 <0.01100 <0.01400 <0.03500 <0.02100 <0.03500   294.00
           JUL
             08...     --       --       --       --       --       --       --       --       --       --       --     924.00
           AUG
             05...     --       --       --       --       --       --       --       --       --       --       --     942.00
             30... <0.03500 <0.02000 <0.03500 <0.03200 <0.02000 <0.05000 <0.01100 <0.01400 <0.03500 <0.02100 <0.03500   936.00
           OCT
             03...     --       --       --       --       --       --       --       --       --       --       --     818.00
           NOV
             14...     --       --       --       --       --       --       --       --       --       --       --     921.00
           DEC
             09...     --       --       --       --       --       --       --       --       --       --       --     810.00



                                   WATER-QUALITY DATA, CALENDAR YEAR JANUARY 1994 TO DECEMBER 1994




                                               2,6-DI-    TRI-    ETHAL-             TER-     LIN-   METHYL              PEB-
                                       METRI-   ETHYL    FLUR-    FLUR-   PHORATE   BACIL    URON     PARA-    EPTC     ULATE
                              SEDI-    BUZIN   ANILINE   ALIN     ALIN     WATER    WATER    WATER    THION    WATER    WATER
                              MENT,   SENCOR   WAT FLT  WAT FLT  WAT FLT   FLTRD    FLTRD    FLTRD   WAT FLT   FLTRD    FILTRD
                    SAMPLE    SUS-     WATER    0.7 U    0.7 U    0.7 U    0.7 U    0.7 U    0.7 U    0.7 U    0.7 U    0.7 U
            DATE    PURPOSE   PENDED  DISSOLV  GF, REC  GF, REC  GF, REC  GF, REC  GF, REC  GF, REC  GF, REC  GF, REC  GF, REC
                     CODE     (MG/L)  (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)
                    (71999)  (80154)  (82630)  (82660)  (82661)  (82663)  (82664)  (82665)  (82666)  (82667)  (82668)  (82669)

           JAN
             07...     --     28.000     --       --       --       --       --       --       --       --       --       --
           FEB
             11...     --     286.00     --       --       --       --       --       --       --       --       --       --
           MAR
             01...     --     136.00     --       --       --       --       --       --       --       --       --       --
           APR
             15...   15.000     --       --       --       --       --       --       --       --       --       --       --
             22...     --     39.000     --       --       --       --       --       --       --       --       --       --
           MAY
             10...     --     434.00 <0.00400 <0.00300 <0.00200 <0.00400 <0.00200 <0.00700 <0.00200 <0.00600  0.01800 <0.00400
           JUN
             01...     --     294.00 <0.00400 <0.00300 <0.00200 <0.00400 <0.00200 <0.00700 <0.00200 <0.00600  0.05800 <0.00400
           JUL
             08...   15.000   125.00     --       --       --       --       --       --       --       --       --       --
           AUG
             05...     --     69.000     --       --       --       --       --       --       --       --       --       --
             30...     --     43.000 <0.00400 <0.00300 <0.00200 <0.00400 <0.00200 <0.00700 <0.00200 <0.00600 <0.00200 <0.00400
           OCT
             03...     --     30.000     --       --       --       --       --       --       --       --       --       --
           NOV
             14...     --     21.000     --       --       --       --       --       --       --       --       --       --
           DEC
             09...     --     81.000     --       --       --       --       --       --       --       --       --       --



                                   WATER-QUALITY DATA, CALENDAR YEAR JANUARY 1994 TO DECEMBER 1994




                     TEBU-     MOL-    ETHO-     BEN-    CARBO-    TER-    PRON-    DISUL-   TRIAL-    PRO-     CAR-    THIO-
                    THIURON   INATE    PROP     FLUR-    FURAN    BUFOS    AMIDE    FOTON    LATE     PANIL    BARYL   BENCARB
                     WATER    WATER    WATER    ALIN     WATER    WATER    WATER    WATER    WATER    WATER    WATER    WATER
                     FLTRD    FLTRD    FLTRD   WAT FLD   FLTRD    FLTRD    FLTRD    FLTRD    FLTRD    FLTRD    FLTRD    FLTRD
                     0.7 U    0.7 U    0.7 U    0.7 U    0.7 U    0.7 U    0.7 U    0.7 U    0.7 U    0.7 U    0.7 U    0.7 U
            DATE    GF, REC  GF, REC  GF, REC  GF, REC  GF, REC  GF, REC  GF, REC  GF, REC  GF, REC  GF, REC  GF, REC  GF, REC
                    (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)
                    (82670)  (82671)  (82672)  (82673)  (82674)  (82675)  (82676)  (82677)  (82678)  (82679)  (82680)  (82681)

           JAN
             07...     --       --       --       --       --       --       --       --       --       --       --       --
           FEB
             11...     --       --       --       --       --       --       --       --       --       --       --       --
           MAR
             01...     --       --       --       --       --       --       --       --       --       --       --       --
           APR
             15...     --       --       --       --       --       --       --       --       --       --       --       --
             22...     --       --       --       --       --       --       --       --       --       --       --       --
           MAY
             10... <0.01000 <0.00400 <0.00300 <0.00200 <0.00300 <0.01300 <0.00300 <0.01700 <0.00100 <0.00400 <0.00300 <0.00200
           JUN
             01... <0.01000 <0.00400 <0.00300 <0.00200 E0.06600 <0.01300 <0.00300 <0.01700 <0.00100 <0.00400 E0.00700 <0.00200
           JUL
             08...     --       --       --       --       --       --       --       --       --       --       --       --
           AUG
             05...     --       --       --       --       --       --       --       --       --       --       --       --
             30... <0.01000 <0.00400 <0.00300 <0.00200 <0.00300 <0.01300 <0.00300 <0.01700 <0.00100 <0.00400 <0.00300 <0.00200
           OCT
             03...     --       --       --       --       --       --       --       --       --       --       --       --
           NOV
             14...     --       --       --       --       --       --       --       --       --       --       --       --
           DEC
             09...     --       --       --       --       --       --       --       --       --       --       --       --



                                   WATER-QUALITY DATA, CALENDAR YEAR JANUARY 1994 TO DECEMBER 1994




                                  PENDI-  NAPROP-    PRO-   METHYL     PER-    DIAZ-   TERBUTH    HCH             QUALITY
                         DCPA     METH-    AMIDE   PARGITE   AZIN-   METHRIN   INON    YLAZINE   ALPHA            ASSUR-
                         WATER    ALIN     WATER    WATER    PHOS      CIS    D10 SRG  SURROGT  D6 SRG             ANCE
                         FLTRD   WAT FLT   FLTRD    FLTRD   WAT FLT  WAT FLT  WAT FLT  WAT FLT  WAT FLT   REP-     DATA
                         0.7 U    0.7 U    0.7 U    0.7 U    0.7 U    0.7 U    0.7 U    0.7 U    0.7 U   LICATE   INDICA-
                DATE    GF, REC  GF, REC  GF, REC  GF, REC  GF, REC  GF, REC  GF, REC  GF, REC  GF, REC   TYPE     TOR
                        (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   PERCENT  PERCENT  PERCENT  (CODE)    CODE
                        (82682)  (82683)  (82684)  (82685)  (82686)  (82687)  (91063)  (91064)  (91065)  (99105)  (99111)

            JAN
              07...        --       --       --       --       --       --       --       --       --       --       --
            FEB
              11...        --       --       --       --       --       --       --       --       --       --       --
            MAR
              01...        --       --       --       --       --       --       --       --       --       --       --
            APR
              15...        --       --       --       --       --       --       --       --       --     30.000   100.00
              22...        --       --       --       --       --       --       --       --       --       --     10.000
            MAY
              10...    0.007000 <0.00400 <0.00300 <0.01300 <0.00100 <0.00500   99.200   105.00   82.100     --       --
            JUN
              01...    <0.00200 <0.00400 <0.00300 <0.01300 <0.00100 <0.00500   81.800   122.00   91.000     --       --
            JUL
              08...        --       --       --       --       --       --       --       --       --     30.000   30.000
            AUG
              05...        --       --       --       --       --       --       --       --       --       --       --
              30...    <0.00200 <0.00400 <0.00300 <0.01300 <0.00100 <0.00500   145.00   114.00   99.200     --       --
            OCT
              03...        --       --       --       --       --       --       --       --       --       --       --
            NOV
              14...        --       --       --       --       --       --       --       --       --       --       --
            DEC
              09...        --       --       --       --       --       --       --       --       --       --       --



                                   WATER-QUALITY DATA, CALENDAR YEAR JANUARY 1995 TO DECEMBER 1995




                                         LAT-           LONG-                                         HYDRO-  TEMPER-
                                          I-             I-      MEDIUM   SAMPLE                      LOGIC    ATURE
                     DATE      TIME      TUDE           TUDE      CODE     TYPE     STATE   COUNTY    EVENT    WATER
                                                                                                              (DEG C)
                                                                                                              (00010)

                 JAN
                   11...       1000   40 15 29 N   104 52 45 W       9       7          08   123        9      2.6000
                 FEB
                   14...       1125   40 15 29 N   104 52 45 W       9       9          08   123        9     0.50000
                 MAR
                   13...       1400   40 15 29 N   104 52 45 W       9       9          08   123        9      12.700
                 APR
                   07...       1130   40 15 29 N   104 52 45 W       9       9          08   123        9      12.600
                 MAY
                   04...       1200   40 15 29 N   104 52 45 W       9       9          08   123        9      10.600
                   18...       1045   40 15 29 N   104 52 45 W       9       9          08   123        9      8.2000
                 JUN
                   15...       0910   40 15 29 N   104 52 45 W       9       9          08   123        9      14.300
                   28...       0915   40 15 29 N   104 52 45 W       9       9          08   123        9      14.100
                 JUL
                   31...       1400   40 15 29 N   104 52 45 W       9       9          08   123        9      16.900



                                   WATER-QUALITY DATA, CALENDAR YEAR JANUARY 1995 TO DECEMBER 1995




                               DIS-                       PH      ALKA-    NITRO-   NITRO-   NITRO-   NITRO-   NITRO-
                             CHARGE,   SPE-              WATER   LINITY     GEN,     GEN,   GEN,AM-  GEN,AM-    GEN,
                              INST.    CIFIC             WHOLE   WAT DIS  AMMONIA  NITRITE  MONIA +  MONIA +  NO2+NO3
                              CUBIC    CON-    OXYGEN,   FIELD   TOT FET    DIS-     DIS-   ORGANIC  ORGANIC    DIS-
                               FEET    DUCT-     DIS-   (STAND-   FIELD    SOLVED   SOLVED   DIS.     TOTAL    SOLVED
                     DATE      PER     ANCE     SOLVED    ARD    MG/L AS   (MG/L    (MG/L    (MG/L    (MG/L    (MG/L
                              SECOND  (US/CM)   (MG/L)   UNITS)   CACO3    AS N)    AS N)    AS N)    AS N)    AS N)
                             (00061)  (00095)  (00300)  (00400)  (00418)  (00608)  (00613)  (00623)  (00625)  (00631)

                 JAN
                   11...      116.00   1250.0   11.100   8.1000   215.00   1.8000  0.09000   2.5000   3.1000   3.8000
                 FEB
                   14...      83.000   1240.0   11.000   8.1000   215.00   2.0000  0.07000   2.7000   2.8000   3.9000
                 MAR
                   13...      117.00   1270.0   10.200   8.3000   199.00  0.79000  0.21000   1.4000   1.9000   5.3000
                 APR
                   07...      81.200   1250.0   9.7000   8.2000   195.00  0.49000  0.31000   1.2000   1.8000   5.3000
                 MAY
                   04...      337.00   823.00   8.8000   7.9000   139.00  0.49000  0.08000   1.0000   1.7000   2.6000
                   18...      2440.0   484.00   10.900   7.8000   79.000  0.27000  0.04000  0.90000   1.8000  0.76000
                 JUN
                   15...      2360.0   381.00   8.6000   7.9000   68.000  0.15000  0.03000  0.40000  0.80000  0.59000
                   28...      1940.0   261.00   8.1000   7.8000   49.000  0.12000  0.04000  0.30000  0.60000  0.52000
                 JUL
                   31...      251.00   1090.0   7.2000   7.9000   151.00  0.12000  0.10000  0.50000  0.90000   3.0000



                                   WATER-QUALITY DATA, CALENDAR YEAR JANUARY 1995 TO DECEMBER 1995




                                                PHOS-            CARBON,
                                       PHOS-   PHORUS   CARBON,  ORGANIC            MAGNE-            POTAS-   CHLO-
                              PHOS-   PHORUS    ORTHO,  ORGANIC   SUS-    CALCIUM    SIUM,  SODIUM,    SIUM,   RIDE,
                             PHORUS     DIS-    DIS-     DIS-    PENDED    DIS-      DIS-    DIS-      DIS-    DIS-
                              TOTAL    SOLVED  SOLVED   SOLVED    TOTAL    SOLVED   SOLVED  SOLVED    SOLVED   SOLVED
                     DATE     (MG/L    (MG/L   (MG/L     (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L
                              AS P)    AS P)   AS P)     AS C)    AS C)    AS CA)   AS MG)   AS NA)   AS K)    AS CL)
                             (00665)  (00666)  (00671)  (00681)  (00689)  (00915)  (00925)  (00930)  (00935)  (00940)

                 JAN
                   11...     0.87000  0.68000  0.67000   4.7000   1.1000   79.000   55.000   95.000   6.9000   46.000
                 FEB
                   14...     0.63000  0.63000  0.58000   4.4000   1.8000   77.000   55.000   93.000   7.4000   38.000
                 MAR
                   13...      1.2000  0.92000  0.87000   4.9000   1.9000   77.000   57.000   100.00   6.5000   51.000
                 APR
                   07...      1.0000  0.88000  0.84000   5.1000   3.8000   76.000   52.000   100.00   9.3000   58.000
                 MAY
                   04...     0.82000  0.42000  0.43000   5.4000   4.8000   56.000   32.000   62.000   4.9000   28.000
                   18...     0.47000  0.09000  0.07000   8.3000   7.3000   34.000   18.000   31.000   5.2000   14.000
                 JUN
                   15...     0.24000  0.10000  0.09000   6.4000   2.1000   28.000   15.000   23.000   2.2000   9.1000
                   28...     0.22000  0.06000  0.06000   4.7000   1.4000   19.000   9.3000   15.000   1.4000   6.9000
                 JUL
                   31...     0.40000  0.23000  0.23000   4.8000   2.1000   78.000   48.000   84.000   4.2000   26.000



                                   WATER-QUALITY DATA, CALENDAR YEAR JANUARY 1995 TO DECEMBER 1995




                                                                          SOLIDS,                             QUALITY
                                       FLUO-   SILICA,            MANGA-  RESIDUE                             ASSUR-
                             SULFATE   RIDE,    DIS-     IRON,    NESE,   AT 180             SEDI-             ANCE
                              DIS-      DIS-    SOLVED    DIS-     DIS-    DEG. C            MENT,    REP-     DATA
                              SOLVED   SOLVED   (MG/L    SOLVED   SOLVED    DIS-   SAMPLE    SUS-    LICATE   INDICA-
                     DATE     (MG/L    (MG/L     AS      (UG/L    (UG/L    SOLVED  PURPOSE   PENDED   TYPE     TOR
                             AS SO4)   AS F)    SIO2)    AS FE)   AS MN)   (MG/L)   CODE     (MG/L)  (CODE)    CODE
                             (00945)  (00950)  (00955)  (01046)  (01056)  (70300)  (71999)  (80154)  (99105)  (99111)

                 JAN
                   11...      350.00   1.1000   7.8000   38.000   85.000   851.00   15.000   116.00   30.000   30.000
                 FEB
                   14...      350.00   1.0000   8.2000   21.000   93.000   830.00     --     47.000     --       --
                 MAR
                   13...      350.00   1.1000   4.4000   48.000   86.000   864.00     --     50.000     --       --
                 APR
                   07...      330.00   1.2000   1.8000   41.000   120.00   826.00     --     36.000     --       --
                 MAY
                   04...      210.00  0.80000   9.2000   33.000   45.000   539.00     --     203.00     --       --
                   18...      120.00  0.60000   8.7000   150.00   49.000   307.00     --     1268.0     --       --
                 JUN
                   15...      94.000  0.40000   11.000   160.00   28.000   247.00     --     241.00     --       --
                   28...      57.000  0.30000   7.0000   46.000   20.000   158.00     --     344.00     --       --
                 JUL
                   31...      350.00  0.80000   11.000   5.0000   58.000   756.00     --     126.00     --       --