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STATISTICS for BELGIUM

STATISTICS FOR BELGIUM


GEMS/WATER - STATISTICAL SUMMARY BY STATION     2002-02-15   PAGE  34

 STATION - ESCAUT RIVER AT BLEHARIES                STATION NO. 051001
 COUNTRY - BELGIUM                                  DEPTH(M)       3.4
 LOCATION - OCT. 3  LAT. 50/30/59  LONG. 003/25/25  ELEVATION(M)  25.0
 REGIONAL CENTRE - EURA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-01-19 TO 1984-12-05

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP        TOC    PHENOLS         CN
                             COND                                            
                            02041      02061      06001      06532      06606
                            us/cm      deg C     mg/L C       mg/L    mg/L Cn


 NO. OF L-FLAGGED VALUES        0          0          0          8          3
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         22         19          3         15
 MEAN                        808.       11.8         7.      0.006      0.009
 MINIMUM                     580.        3.0         5.      0.001      0.001
 DATE OF MINIMUM       1984-05-03 1982-01-19 1983-05-09 1984-03-07 1984-06-14
 10TH PERCENTILE             686.        4.3         6.      0.001      0.003
 MEDIAN                      775.       11.2         7.      0.005      0.010
 90TH PERCENTILE             916.       19.6         8.      0.010      0.011
 MAXIMUM                    1210.       23.2         9.      0.015      0.020
 DATE OF MAXIMUM       1982-07-05 1983-07-13 1982-03-08 1984-12-05 1984-02-22
 STANDARD DEVIATION          122.        5.7         1.      0.004      0.004




                         CHLORO A     N KJEL      NO2-N      NO3-N        NH3
                                                                             
                            06711      07004      07207      07313      07555
                             mg/L     mg/L N     mg/L N     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        2          0          1          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0         15         20         21         21
 MEAN                      0.0001        9.2       0.38       4.96       6.48
 MINIMUM                                 5.2       0.01       2.50       2.90
 DATE OF MINIMUM                  1984-06-14 1984-06-14 1984-10-10 1983-05-09
 10TH PERCENTILE                         5.4       0.18       3.26       3.26
 MEDIAN                                  8.2       0.32       5.00       6.00
 90TH PERCENTILE                        14.5       0.64       6.38       8.84
 MAXIMUM                                18.8       0.79       7.30      13.80
 DATE OF MAXIMUM                  1984-08-08 1982-07-05 1983-05-09 1984-08-08
 STANDARD DEVIATION                      3.9       0.21       1.14       2.90




                          PERCENT         O2        BOD        COD          F
                           DO SAT       DISS                             DISS
                            08001      08101      08201      08301      09105
                          PERCENT    mg/L O2    mg/L O2    mg/L O2     mg/L F


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         22         21         22         19
 MEAN                         61.        6.5         6.        34.        0.4
 MINIMUM                      41.        3.6         2.        15.        0.1
 DATE OF MINIMUM       1984-08-29 1984-08-29 1984-08-08 1983-09-12 1984-05-03
 10TH PERCENTILE              43.        3.9         2.        16.        0.1
 MEDIAN                       56.        6.7         5.        34.        0.4
 90TH PERCENTILE              77.        8.6        12.        46.        0.6
 MAXIMUM                     109.       12.0        19.        58.        0.7
 DATE OF MAXIMUM       1983-07-13 1984-03-07 1983-07-13 1984-01-17 1982-11-08
 STANDARD DEVIATION           18.        2.0         4.        11.        0.2





                               pH   SUSP SOL       TENS    P ORTHO    P ORTHO
                                     105 DEG    ANIONIC      TOTAL       DISS
                            10301      10401      10702      15205      15255
                         pH UNITS       mg/L       mg/L     mg/L P     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         20         20         16         21
 MEAN                         7.4        98.        0.1      0.782      0.659
 MINIMUM                      7.1        10.        0.0      0.520      0.360
 DATE OF MINIMUM       1982-07-05 1984-08-08 1983-05-09 1984-02-22 1982-01-19
 10TH PERCENTILE              7.1        20.        0.0      0.538      0.453
 MEDIAN                       7.4        50.        0.1      0.735      0.610
 90TH PERCENTILE              7.7       110.        0.2      1.032      0.837
 MAXIMUM                      7.9       800.        0.6      1.160      1.100
 DATE OF MAXIMUM       1983-05-09 1984-01-17 1982-01-19 1984-08-08 1982-11-08
 STANDARD DEVIATION           0.2       174.        0.1      0.194      0.182




                         SULPHATE         Cl         Cr         Mn         Fe
                                        DISS      TOTAL      TOTAL      TOTAL
                            16301      17204      24002      25004      26004
                         mg/L SO4    mg/L Cl    mg/L Cr    mg/L Mn    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         21         16         16         15
 MEAN                        114.        55.      0.011       0.75       0.74
 MINIMUM                      52.        45.      0.002       0.21       0.30
 DATE OF MINIMUM       1982-07-06 1982-03-08 1982-07-06 1983-07-13 1982-03-08
 10TH PERCENTILE              79.        45.      0.002       0.22       0.31
 MEDIAN                      113.        54.      0.009       0.52       0.59
 90TH PERCENTILE             136.        65.      0.022       1.35       1.29
 MAXIMUM                     156.        68.      0.031       2.26       1.59
 DATE OF MAXIMUM       1982-03-05 1984-08-08 1983-03-10 1982-03-05 1984-02-22
 STANDARD DEVIATION           22.         7.      0.008       0.57       0.39




                               Ni         Cu         Zn   COLIFORM   FAEC COL
                            TOTAL      TOTAL      TOTAL      TOTAL           
                            28001      29006      30004      36002      36012
                          mg/L Ni    mg/L Cu    mg/L Zn   No/100ml   No/100ml


 NO. OF L-FLAGGED VALUES        0          0          0          0          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       16         15         15         19         18
 MEAN                       0.006      0.008      0.144      3024.       101.
 MINIMUM                    0.003      0.002      0.040        10.         1.
 DATE OF MINIMUM       1983-03-10 1982-07-06 1982-07-05 1984-12-05 1984-05-03
 10TH PERCENTILE            0.003      0.002      0.045        82.         2.
 MEDIAN                     0.006      0.007      0.060       500.        50.
 90TH PERCENTILE            0.009      0.015      0.118      5200.       181.
 MAXIMUM                    0.013      0.020      1.160     33000.       600.
 DATE OF MAXIMUM       1982-01-19 1983-05-09 1983-05-09 1983-07-13 1984-01-17
 STANDARD DEVIATION         0.003      0.005      0.282      7486.       172.




                             FAEC         Cd         Ba         Pb
                            STREP      TOTAL      TOTAL      TOTAL
                            36102      48001      80011      82001
                         No/100ml    mg/L Cd    ug/L Hg    mg/L Pb


 NO. OF L-FLAGGED VALUES        2          0          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0
 NO. OF UNFLAGGED VALUES       16         16         15         16
 MEAN                         10.      0.001      0.247      0.010
 MINIMUM                       0.      0.000      0.000      0.004
 DATE OF MINIMUM       1982-03-05 1984-05-03 1984-12-05 1984-05-03
 10TH PERCENTILE               0.      0.000      0.000      0.005
 MEDIAN                        2.      0.001      0.155      0.008
 90TH PERCENTILE              11.      0.001      0.498      0.016
 MAXIMUM                     100.      0.002      1.200      0.019
 DATE OF MAXIMUM       1984-01-17 1982-01-19 1983-05-09 1982-07-05
 STANDARD DEVIATION           23.      0.000      0.299      0.004





 STATION - WARNETON - LYS RIVER                     STATION NO. 051007
 COUNTRY - BELGIUM                                  DEPTH(M)    9999.9
 LOCATION - OCT. 3  LAT. 50/45/00  LONG. 002/57/00  ELEVATION(M)9999.9
 REGIONAL CENTRE - EURA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-01-18 TO 1984-12-04

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP        TOC    PHENOLS         CN
                             COND                                            
                            02041      02061      06001      06532      06606
                            us/cm      deg C     mg/L C       mg/L    mg/L Cn


 NO. OF L-FLAGGED VALUES        0          0          0          2          2
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       18         18         17          6         14
 MEAN                        949.       13.1        10.      0.007      0.011
 MINIMUM                     800.        6.0         5.      0.005      0.003
 DATE OF MINIMUM       1984-10-25 1984-01-17 1983-01-17 1984-01-17 1983-05-04
 10TH PERCENTILE             808.        6.1         5.                 0.004
 MEDIAN                      935.       12.0        10.      0.005      0.010
 90TH PERCENTILE            1015.       20.1        13.                 0.022
 MAXIMUM                    1350.       22.0        18.      0.020      0.025
 DATE OF MAXIMUM       1983-11-10 1984-08-29 1983-11-10 1984-03-07 1984-08-07
 STANDARD DEVIATION          129.        5.7         3.      0.005      0.007




                         CHLORO A     N KJEL      NO2-N      NO3-N        NH3
                                                                             
                            06711      07004      07207      07313      07555
                             mg/L     mg/L N     mg/L N     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        2          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        3         13         17         18         18
 MEAN                      0.0530        8.7       0.74       3.89       5.46
 MINIMUM                   0.0001        1.9       0.20       0.38       1.90
 DATE OF MINIMUM       1984-10-25 1983-01-17 1983-01-17 1983-11-10 1983-01-17
 10TH PERCENTILE                         2.7       0.24       0.64       2.54
 MEDIAN                    0.0030        8.2       0.61       3.90       5.60
 90TH PERCENTILE                        13.0       1.29       6.73       7.66
 MAXIMUM                   0.2040       18.2       1.50       8.30       8.50
 DATE OF MAXIMUM       1984-08-29 1983-11-10 1984-06-14 1983-01-17 1984-06-14
 STANDARD DEVIATION        0.0879        4.0       0.42       2.46       1.86




                          PERCENT         O2        BOD        COD          F
                           DO SAT       DISS                             DISS
                            08001      08101      08201      08301      09105
                          PERCENT    mg/L O2    mg/L O2    mg/L O2     mg/L F


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       18         18         18         18         17
 MEAN                         42.        4.4         5.        63.        0.4
 MINIMUM                       0.        0.0         0.        31.        0.2
 DATE OF MINIMUM       1983-11-10 1983-11-10 1984-08-07 1982-03-01 1983-09-07
 10TH PERCENTILE               8.        0.8         0.        40.        0.2
 MEDIAN                       41.        4.8         4.        55.        0.3
 90TH PERCENTILE              71.        7.5         8.        84.        0.4
 MAXIMUM                      94.        8.3        10.       141.        0.8
 DATE OF MAXIMUM       1984-08-07 1984-08-07 1984-08-29 1982-01-18 1982-05-25
 STANDARD DEVIATION           24.        2.6         3.        24.        0.1




                               pH   SUSP SOL       TENS    P ORTHO    P ORTHO
                                     105 DEG    ANIONIC      TOTAL       DISS
                            10301      10401      10702      15205      15255
                         pH UNITS       mg/L       mg/L     mg/L P     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       18         18         18         14         18
 MEAN                         7.5        85.        0.2      2.176      1.589
 MINIMUM                      7.2        10.        0.0      0.220      0.560
 DATE OF MINIMUM       1982-01-18 1984-12-04 1983-05-04 1983-03-01 1983-01-17
 10TH PERCENTILE              7.2        18.        0.0      0.472      0.584
 MEDIAN                       7.5        45.        0.2      1.705      1.400
 90TH PERCENTILE              7.7       105.        0.3      3.275      2.540
 MAXIMUM                      8.1       590.        0.5      8.580      4.200
 DATE OF MAXIMUM       1983-07-04 1982-01-18 1982-01-18 1984-06-14 1983-11-10
 STANDARD DEVIATION           0.2       131.        0.1      2.050      0.927




                         SULPHATE         Cl         Cr         Mn         Fe
                                        DISS      TOTAL      TOTAL      TOTAL
                            16301      17204      24002      25004      26004
                         mg/L SO4    mg/L Cl    mg/L Cr    mg/L Mn    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       18         18         14         14         14
 MEAN                        169.        88.      0.015       0.14       0.73
 MINIMUM                      49.        59.      0.004       0.05       0.24
 DATE OF MINIMUM       1984-06-14 1983-05-04 1984-12-04 1982-07-28 1982-09-28
 10TH PERCENTILE              77.        60.      0.005       0.07       0.28
 MEDIAN                      110.        88.      0.008       0.14       0.52
 90TH PERCENTILE             127.       110.      0.031       0.16       1.40
 MAXIMUM                    1272.       150.      0.037       0.24       1.96
 DATE OF MAXIMUM       1984-10-25 1983-11-10 1983-03-01 1982-01-18 1982-01-18
 STANDARD DEVIATION          276.        23.      0.011       0.04       0.53




                               Ni         Cu         Zn   COLIFORM   FAEC COL
                            TOTAL      TOTAL      TOTAL      TOTAL           
                            28001      29006      30004      36002      36012
                          mg/L Ni    mg/L Cu    mg/L Zn   No/100ml   No/100ml


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          1          0
 NO. OF UNFLAGGED VALUES       14         14         14         13         11
 MEAN                       0.011      0.011      0.211     15417.      2559.
 MINIMUM                    0.005      0.001      0.030       240.        24.
 DATE OF MINIMUM       1983-05-04 1984-01-17 1982-07-28 1984-08-29 1984-12-04
 10TH PERCENTILE            0.006      0.002      0.038       424.        49.
 MEDIAN                     0.011      0.008      0.090      6900.      1000.
 90TH PERCENTILE            0.015      0.026      0.233     25000.      7790.
 MAXIMUM                    0.016      0.037      1.600    100000.     10800.
 DATE OF MAXIMUM       1984-01-17 1983-03-01 1982-01-18 1984-10-25 1982-07-28
 STANDARD DEVIATION         0.003      0.011      0.406     25666.      3623.






                             FAEC         Cd         Ba         Pb
                            STREP      TOTAL      TOTAL      TOTAL
                            36102      48001      80011      82001
                         No/100ml    mg/L Cd    ug/L Hg    mg/L Pb


 NO. OF L-FLAGGED VALUES        1          0          2          0
 NO. OF G-FLAGGED VALUES        0          0          0          0
 NO. OF UNFLAGGED VALUES       15         14         12         14
 MEAN                        220.      0.005      0.112      0.026
 MINIMUM                       1.      0.000      0.000      0.003
 DATE OF MINIMUM       1984-08-29 1983-01-17 1984-10-25 1984-12-04
 10TH PERCENTILE               6.      0.000      0.000      0.005
 MEDIAN                       60.      0.001      0.050      0.013
 90TH PERCENTILE             468.      0.004      0.280      0.039
 MAXIMUM                    1700.      0.051      0.410      0.150
 DATE OF MAXIMUM       1982-01-18 1982-01-18 1982-01-18 1982-01-18
 STANDARD DEVIATION          443.      0.013      0.130      0.037





 STATION - LEERS/NORD - ESPIERRE RIVER              STATION NO. 051008
 COUNTRY - BELGIUM                                  DEPTH(M)    9999.9
 LOCATION - OCT. 3  LAT. 50/41/00  LONG. 003/16/00  ELEVATION(M)9999.9
 REGIONAL CENTRE - EURA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-01-19 TO 1984-12-04

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP        TOC    PHENOLS         CN
                             COND                                            
                            02041      02061      06001      06532      06606
                            us/cm      deg C     mg/L C       mg/L    mg/L Cn


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       17         18         14         13         12
 MEAN                       1627.       14.1        71.      0.160      0.019
 MINIMUM                     760.        9.0         3.      0.010      0.001
 DATE OF MINIMUM       1983-07-13 1982-03-08 1983-05-09 1982-03-08 1982-07-06
 10TH PERCENTILE            1033.       10.6        11.      0.012      0.003
 MEDIAN                     1700.       14.0        50.      0.155      0.015
 90TH PERCENTILE            1965.       19.0       144.      0.251      0.024
 MAXIMUM                    2000.       19.3       244.      0.315      0.070
 DATE OF MAXIMUM       1984-03-07 1982-07-06 1982-01-19 1983-07-13 1982-11-08
 STANDARD DEVIATION          347.        3.2        69.      0.093      0.017




                         CHLORO A     N KJEL      NO2-N      NO3-N        NH3
                                                                             
                            06711      07004      07207      07313      07555
                             mg/L     mg/L N     mg/L N     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        2          0          1          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        2         12         15         12         17
 MEAN                      0.0103       61.5       0.64       3.12      29.29
 MINIMUM                   0.0001       12.8       0.01       0.01       0.00
 DATE OF MINIMUM       1984-10-25 1982-03-08 1983-05-09 1984-08-29 1984-10-25
 10TH PERCENTILE                        13.2       0.01       0.02       7.42
 MEDIAN                    0.0081       52.2       0.14       1.60      31.00
 90TH PERCENTILE                       128.1       1.14       5.61      41.46
 MAXIMUM                   0.0250      160.0       5.50      16.80      55.40
 DATE OF MAXIMUM       1984-08-29 1984-01-17 1983-01-10 1982-03-08 1984-06-14
 STANDARD DEVIATION        0.0123       49.1       1.35       4.54      13.03




                          PERCENT         O2        BOD        COD          F
                           DO SAT       DISS                             DISS
                            08001      08101      08201      08301      09105
                          PERCENT    mg/L O2    mg/L O2    mg/L O2     mg/L F


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       18         18         17         18         14
 MEAN                         10.        1.0       163.       758.       19.2
 MINIMUM                       0.        0.0         4.        56.        0.4
 DATE OF MINIMUM       1982-03-05 1982-03-05 1982-07-05 1982-03-05 1984-06-14
 10TH PERCENTILE               0.        0.0        14.        59.        0.5
 MEDIAN                        7.        0.8        96.       650.        9.2
 90TH PERCENTILE              24.        2.5       344.      1450.       51.5
 MAXIMUM                      51.        5.7       640.      2573.       60.0
 DATE OF MAXIMUM       1982-03-08 1982-03-08 1982-01-19 1984-03-07 1982-01-19
 STANDARD DEVIATION           13.        1.4       171.       639.       22.2




                               pH   SUSP SOL       TENS    P ORTHO    P ORTHO
                                     105 DEG    ANIONIC      TOTAL       DISS
                            10301      10401      10702      15205      15255
                         pH UNITS       mg/L       mg/L     mg/L P     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       18         16         15         12         16
 MEAN                         7.0       378.        3.3     53.392     48.722
 MINIMUM                      6.3        70.        0.6      4.500      4.500
 DATE OF MINIMUM       1982-03-08 1982-07-06 1984-10-25 1984-10-25 1984-10-25
 10TH PERCENTILE              6.5        94.        0.8      5.040      6.000
 MEDIAN                       7.0       240.        2.4     42.750     48.100
 90TH PERCENTILE              7.4       836.        6.5    105.120     98.800
 MAXIMUM                      7.9      1200.       12.2    153.900    146.500
 DATE OF MAXIMUM       1983-01-10 1982-01-19 1984-08-29 1982-07-06 1982-07-06
 STANDARD DEVIATION           0.4       350.        3.1     48.337     41.383




                         SULPHATE         Cl         Cr         Mn         Fe
                                        DISS      TOTAL      TOTAL      TOTAL
                            16301      17204      24002      25004      26004
                         mg/L SO4    mg/L Cl    mg/L Cr    mg/L Mn    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       17         17         13         14         12
 MEAN                        249.       201.      1.866       0.37       4.71
 MINIMUM                      14.        89.      0.775       0.10       1.31
 DATE OF MINIMUM       1984-10-25 1982-07-05 1984-12-04 1984-01-17 1982-07-05
 10TH PERCENTILE              25.        95.      0.818       0.15       1.34
 MEDIAN                      280.       172.      1.675       0.37       2.30
 90TH PERCENTILE             372.       347.      3.056       0.54       8.07
 MAXIMUM                     406.       550.      4.300       0.59      13.54
 DATE OF MAXIMUM       1982-03-05 1983-07-13 1982-07-06 1982-11-08 1982-11-08
 STANDARD DEVIATION          117.       129.      1.006       0.15       3.92




                               Ni         Cu         Zn   COLIFORM   FAEC COL
                            TOTAL      TOTAL      TOTAL      TOTAL           
                            28001      29006      30004      36002      36012
                          mg/L Ni    mg/L Cu    mg/L Zn   No/100ml   No/100ml


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          3          1
 NO. OF UNFLAGGED VALUES       14         13         13          6         13
 MEAN                       0.058      0.060      0.524    1.3E+05     51071.
 MINIMUM                    0.011      0.006      0.040    1.7E+04      4000.
 DATE OF MINIMUM       1984-01-17 1984-12-04 1984-10-25 1982-03-08 1982-03-08
 10TH PERCENTILE            0.012      0.007      0.103                11200.
 MEDIAN                     0.045      0.056      0.400    1.0E+05     53000.
 90TH PERCENTILE            0.112      0.095      0.724                90000.
 MAXIMUM                    0.180      0.150      1.750    4.5E+05    100000.
 DATE OF MAXIMUM       1983-03-10 1983-03-10 1982-11-08 1984-08-29 1982-01-19
 STANDARD DEVIATION         0.049      0.039      0.415    1.3E+05     29622.




                             FAEC         Cd         Ba         Pb
                            STREP      TOTAL      TOTAL      TOTAL
                            36102      48001      80011      82001
                         No/100ml    mg/L Cd    ug/L Hg    mg/L Pb


 NO. OF L-FLAGGED VALUES        0          0          2          0
 NO. OF G-FLAGGED VALUES        0          0          0          0
 NO. OF UNFLAGGED VALUES       13         14         12         14
 MEAN                      16600.      0.128      0.895      0.017
 MINIMUM                    2900.      0.005      0.000      0.004
 DATE OF MINIMUM       1982-03-05 1984-03-07 1984-10-25 1982-03-08
 10TH PERCENTILE            2900.      0.006      0.000      0.005
 MEDIAN                    10000.      0.062      0.450      0.014
 90TH PERCENTILE           41200.      0.164      1.590      0.030
 MAXIMUM                   55000.      0.940      5.000      0.053
 DATE OF MAXIMUM       1982-01-19 1983-07-13 1982-07-06 1982-11-08
 STANDARD DEVIATION        17123.      0.239      1.308      0.013





 STATION - DOEL - SCHELDT RIVER                     STATION NO. 051009
 COUNTRY - BELGIUM                                  DEPTH(M)    9999.9
 LOCATION - OCT. 3  LAT. 51/19/00  LONG. 004/14/00  ELEVATION(M)9999.9
 REGIONAL CENTRE - EURA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-01-21 TO 1984-11-13

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP        TOC    PHENOLS         CN
                             COND                                            
                            02041      02061      06001      06532      06606
                            us/cm      deg C     mg/L C       mg/L    mg/L Cn


 NO. OF L-FLAGGED VALUES        0          0          0          3          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       21         21         18          8         15
 MEAN                      13429.       13.6         9.      0.007      0.008
 MINIMUM                    4300.        4.0         3.      0.005      0.005
 DATE OF MINIMUM       1983-05-10 1984-02-23 1984-09-17 1983-10-10 1982-11-09
 10TH PERCENTILE            4720.        4.7         5.      0.005      0.005
 MEDIAN                    11000.       13.0         7.      0.005      0.005
 90TH PERCENTILE           19950.       20.0         9.      0.016      0.016
 MAXIMUM                   47000.       23.5        54.      0.019      0.020
 DATE OF MAXIMUM       1984-07-23 1983-07-14 1984-08-09 1982-07-09 1984-02-23
 STANDARD DEVIATION        10145.        5.6        11.      0.005      0.005




                         CHLORO A     N KJEL      NO2-N      NO3-N        NH3
                                                                             
                            06711      07004      07207      07313      07555
                             mg/L     mg/L N     mg/L N     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        6          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1         10         21         22         21
 MEAN                      0.0006        3.7       0.32       4.01       2.68
 MINIMUM                   0.0001        1.0       0.04       1.20       0.12
 DATE OF MINIMUM       1984-05-04 1984-07-23 1984-02-23 1984-10-11 1983-09-13
 10TH PERCENTILE                         1.0       0.05       2.33       0.28
 MEDIAN                    0.0001        4.1       0.19       3.90       2.00
 90TH PERCENTILE                         5.5       0.52       5.56       3.70
 MAXIMUM                   0.0039        6.5       2.00       6.40      17.80
 DATE OF MAXIMUM       1984-02-23 1984-10-11 1982-05-04 1982-05-04 1982-03-09
 STANDARD DEVIATION        0.0014        1.8       0.42       1.18       3.66




                          PERCENT         O2        BOD        COD          F
                           DO SAT       DISS                             DISS
                            08001      08101      08201      08301      09105
                          PERCENT    mg/L O2    mg/L O2    mg/L O2     mg/L F


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       21         22         20         21         18
 MEAN                         33.        3.4         4.       137.        1.1
 MINIMUM                       0.        0.0         3.        25.        0.5
 DATE OF MINIMUM       1982-07-06 1982-07-06 1982-07-06 1984-07-23 1984-11-13
 10TH PERCENTILE               6.        0.6         3.        32.        0.6
 MEDIAN                       32.        2.9         4.        90.        0.9
 90TH PERCENTILE              59.        6.5         6.       299.        1.4
 MAXIMUM                      76.        7.8        10.       436.        3.0
 DATE OF MAXIMUM       1984-07-23 1983-11-16 1983-11-16 1983-07-14 1983-07-14
 STANDARD DEVIATION           22.        2.3         2.       115.        0.6




                               pH   SUSP SOL       TENS    P ORTHO    P ORTHO
                                     105 DEG    ANIONIC      TOTAL       DISS
                            10301      10401      10702      15205      15255
                         pH UNITS       mg/L       mg/L     mg/L P     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         20         20         15         22
 MEAN                         7.2       180.        0.1      1.115      0.552
 MINIMUM                      6.9        10.        0.0      0.350      0.270
 DATE OF MINIMUM       1983-11-16 1983-01-11 1984-11-13 1984-02-23 1984-02-23
 10TH PERCENTILE              7.0        20.        0.0      0.470      0.330
 MEDIAN                       7.1       115.        0.1      0.980      0.535
 90TH PERCENTILE              7.4       300.        0.2      1.775      0.796
 MAXIMUM                      7.5       910.        0.3      2.750      0.870
 DATE OF MAXIMUM       1983-01-11 1983-10-10 1983-10-10 1982-03-09 1982-07-09
 STANDARD DEVIATION           0.2       195.        0.1      0.634      0.165




                         SULPHATE         Cl         Cr         Cr         Mn
                                        DISS      TOTAL       DISS      TOTAL
                            16301      17204      24002      24052      25004
                         mg/L SO4    mg/L Cl    mg/L Cr    mg/L Cr    mg/L Mn


 NO. OF L-FLAGGED VALUES        0          0          0          2          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       20         22         19          0         18
 MEAN                        644.      4203.      0.013      0.001       0.41
 MINIMUM                     125.       336.      0.001                  0.21
 DATE OF MINIMUM       1982-03-09 1983-03-09 1984-07-23            1984-07-23
 10TH PERCENTILE             270.      1400.      0.003                  0.24
 MEDIAN                      586.      4245.      0.011                  0.41
 90TH PERCENTILE            1090.      7514.      0.023                  0.52
 MAXIMUM                    1340.      9580.      0.031                  0.58
 DATE OF MAXIMUM       1983-11-16 1983-11-16 1983-05-10            1984-10-11
 STANDARD DEVIATION          348.      2545.      0.008                  0.11




                               Mn         Fe         Fe         Ni         Ni
                             DISS      TOTAL       DISS      TOTAL       DISS
                            25104      26004      26104      28001      28101
                          mg/L Mn    mg/L Fe    mg/L Fe    mg/L Ni    mg/L Ni


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1         18          1         18          1
 MEAN                        0.16       4.63       0.04      0.019      0.014
 MINIMUM                                0.67                 0.005           
 DATE OF MINIMUM                  1984-07-23            1982-11-09           
 10TH PERCENTILE                        0.77                 0.011           
 MEDIAN                                 2.51                 0.016           
 90TH PERCENTILE                        9.31                 0.027           
 MAXIMUM                               19.70                 0.039           
 DATE OF MAXIMUM                  1983-07-14            1984-09-17           
 STANDARD DEVIATION                     5.57                 0.008           




                               Cu         Cu         Zn         Zn   COLIFORM
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            29006      29106      30004      30104      36002
                          mg/L Cu    mg/L Cu    mg/L Zn    mg/L Zn   No/100ml


 NO. OF L-FLAGGED VALUES        0          1          0          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       18          0         18          0         20
 MEAN                       0.013      0.001      0.113      0.020       568.
 MINIMUM                    0.002                 0.030                   15.
 DATE OF MINIMUM       1983-01-11            1982-07-06            1983-03-09
 10TH PERCENTILE            0.003                 0.038                   20.
 MEDIAN                     0.013                 0.080                  195.
 90TH PERCENTILE            0.022                 0.183                 1860.
 MAXIMUM                    0.029                 0.546                 2200.
 DATE OF MAXIMUM       1984-02-23            1983-05-10            1983-10-10
 STANDARD DEVIATION         0.007                 0.119                  701.




                         FAEC COL       FAEC         Cd         Cd         Ba
                                       STREP      TOTAL       DISS      TOTAL
                            36012      36102      48001      48102      80011
                         No/100ml   No/100ml    mg/L Cd    mg/L Cd    ug/L Hg


 NO. OF L-FLAGGED VALUES        0          0          0          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       16         17         15          1         18
 MEAN                        171.        16.      0.001      0.001      0.144
 MINIMUM                       1.         0.      0.000                 0.000
 DATE OF MINIMUM       1983-01-11 1983-07-14 1984-07-23            1984-02-23
 10TH PERCENTILE               5.         0.      0.000                 0.000
 MEDIAN                       25.         6.      0.001                 0.050
 90TH PERCENTILE             134.        20.      0.002                 0.375
 MAXIMUM                    2100.       150.      0.004                 0.900
 DATE OF MAXIMUM       1983-10-10 1983-10-10 1982-03-09            1983-05-10
 STANDARD DEVIATION          517.        35.      0.001                 0.240




                               Hg         Pb         Pb
                             DISS      TOTAL       DISS
                            80111      82001      82101
                          ug/L Hg    mg/L Pb    mg/L Pb


 NO. OF L-FLAGGED VALUES        2          0          1
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES        0         19          1
 MEAN                       0.000      0.042      0.003
 MINIMUM                               0.003           
 DATE OF MINIMUM                  1982-11-09           
 10TH PERCENTILE                       0.008           
 MEDIAN                                0.016           
 90TH PERCENTILE                       0.043           
 MAXIMUM                               0.430           
 DATE OF MAXIMUM                  1982-03-09           
 STANDARD DEVIATION                    0.095           





 STATION - ERQUELINNES - SAMBRE RIVER               STATION NO. 051011
 COUNTRY - BELGIUM                                  DEPTH(M)    9999.9
 LOCATION - OCT. 3  LAT. 50/18/00  LONG. 004/07/00  ELEVATION(M)9999.9
 REGIONAL CENTRE - EURA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-02-24 TO 1984-12-12

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP        TOC    PHENOLS         CN
                             COND                                            
                            02041      02061      06001      06532      06606
                            us/cm      deg C     mg/L C       mg/L    mg/L Cn


 NO. OF L-FLAGGED VALUES        0          0          0          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         22         17          5         13
 MEAN                        464.       12.2         6.      0.005      0.016
 MINIMUM                     290.        1.8         0.      0.005      0.001
 DATE OF MINIMUM       1982-12-16 1983-02-16 1983-02-16 1984-03-14 1982-09-22
 10TH PERCENTILE             314.        2.8         1.                 0.001
 MEDIAN                      468.       12.6         6.      0.005      0.005
 90TH PERCENTILE             590.       20.3         9.                 0.041
 MAXIMUM                     623.       22.2         9.      0.005      0.100
 DATE OF MAXIMUM       1984-08-01 1984-08-01 1983-06-16 1984-12-12 1983-10-19
 STANDARD DEVIATION           93.        6.4         2.      0.000      0.029




                         CHLORO A     N KJEL      NO2-N      NO3-N        NH3
                                                                             
                            06711      07004      07207      07313      07555
                             mg/L     mg/L N     mg/L N     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        8          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0         15         22         22         21
 MEAN                      0.0001        2.5       0.14       2.93       0.97
 MINIMUM                   0.0001        0.7       0.02       1.20       0.34
 DATE OF MINIMUM       1984-03-14 1983-08-17 1984-12-12 1983-10-19 1982-12-16
 10TH PERCENTILE                         0.9       0.04       1.64       0.42
 MEDIAN                    0.0001        2.8       0.11       2.95       0.78
 90TH PERCENTILE                         3.7       0.24       3.80       1.39
 MAXIMUM                   0.0001        3.8       0.55       4.30       3.20
 DATE OF MAXIMUM       1984-12-12 1984-04-25 1983-10-19 1984-03-16 1984-09-24
 STANDARD DEVIATION        0.0000        1.0       0.12       0.84       0.68




                          PERCENT         O2        BOD        COD          F
                           DO SAT       DISS                             DISS
                            08001      08101      08201      08301      09105
                          PERCENT    mg/L O2    mg/L O2    mg/L O2     mg/L F


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         22         21         22         19
 MEAN                         84.        8.9         6.        28.        0.2
 MINIMUM                      26.        2.7         2.        12.        0.0
 DATE OF MINIMUM       1983-10-19 1983-10-19 1982-04-07 1984-03-14 1984-12-05
 10TH PERCENTILE              51.        4.7         2.        13.        0.0
 MEDIAN                       85.        8.8         6.        24.        0.2
 90TH PERCENTILE              96.       12.3         9.        45.        0.3
 MAXIMUM                     151.       14.7        12.        63.        0.5
 DATE OF MAXIMUM       1984-04-25 1984-04-25 1984-09-24 1982-02-24 1984-03-14
 STANDARD DEVIATION           26.        2.8         3.        14.        0.1




                               pH   SUSP SOL       TENS         Si    P ORTHO
                                     105 DEG    ANIONIC   REACTIVE      TOTAL
                            10301      10401      10702      14101      15205
                         pH UNITS       mg/L       mg/L   mg/LSiO2     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         17         16          4         15
 MEAN                         7.4        39.        0.1       8.18      0.729
 MINIMUM                      6.8         8.        0.0       0.10      0.260
 DATE OF MINIMUM       1982-12-16 1984-12-12 1982-12-16 1984-06-20 1983-02-16
 10TH PERCENTILE              7.1         9.        0.0                 0.315
 MEDIAN                       7.4        40.        0.0      10.30      0.600
 90TH PERCENTILE              8.0        60.        0.2                 1.325
 MAXIMUM                      8.1       110.        0.2      12.00      1.500
 DATE OF MAXIMUM       1984-08-01 1983-04-20 1982-02-24 1984-03-16 1982-09-22
 STANDARD DEVIATION           0.3        27.        0.1       5.45      0.377




                          P ORTHO   SULPHATE         Cl         Cr         Cr
                             DISS                  DISS      TOTAL       DISS
                            15255      16301      17204      24002      24052
                           mg/L P   mg/L SO4    mg/L Cl    mg/L Cr    mg/L Cr


 NO. OF L-FLAGGED VALUES        0          0          0          0          2
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         21         22         16          0
 MEAN                       0.635        44.        19.      0.004      0.001
 MINIMUM                    0.110        25.         7.      0.001           
 DATE OF MINIMUM       1984-12-05 1984-12-12 1984-12-05 1984-09-24           
 10TH PERCENTILE            0.180        28.        10.      0.001           
 MEDIAN                     0.585        45.        18.      0.003           
 90TH PERCENTILE            1.100        54.        32.      0.007           
 MAXIMUM                    1.500        60.        37.      0.009           
 DATE OF MAXIMUM       1983-10-19 1983-10-19 1984-08-01 1983-04-20           
 STANDARD DEVIATION         0.385         9.         8.      0.002           




                               Mn         Fe         Ni         Cu         Zn
                            TOTAL      TOTAL      TOTAL      TOTAL      TOTAL
                            25004      26004      28001      29006      30004
                          mg/L Mn    mg/L Fe    mg/L Ni    mg/L Cu    mg/L Zn


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       18         18         13         14         13
 MEAN                        0.12       0.37      0.004      0.008      0.041
 MINIMUM                     0.00       0.02      0.001      0.001      0.020
 DATE OF MINIMUM       1984-03-16 1984-03-16 1984-03-14 1983-12-14 1982-04-07
 10TH PERCENTILE             0.03       0.02      0.001      0.001      0.020
 MEDIAN                      0.11       0.35      0.003      0.005      0.040
 90TH PERCENTILE             0.17       0.62      0.007      0.015      0.067
 MAXIMUM                     0.40       1.01      0.008      0.029      0.070
 DATE OF MAXIMUM       1984-06-20 1982-12-16 1983-10-19 1982-09-22 1984-12-12
 STANDARD DEVIATION          0.08       0.27      0.002      0.007      0.019





                         COLIFORM   FAEC COL       FAEC         Cd         Cd
                            TOTAL                 STREP      TOTAL       DISS
                            36002      36012      36102      48001      48102
                         No/100ml   No/100ml   No/100ml    mg/L Cd    mg/L Cd


 NO. OF L-FLAGGED VALUES        0          0          0          3          2
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       18         18         17         13          0
 MEAN                       2020.       363.        28.      0.000      0.000
 MINIMUM                      90.        10.         0.      0.000           
 DATE OF MINIMUM       1984-12-12 1984-04-25 1984-04-25 1982-07-15           
 10TH PERCENTILE             274.        42.         1.      0.000           
 MEDIAN                     1050.       195.        22.      0.000           
 90TH PERCENTILE            4140.       910.        53.      0.001           
 MAXIMUM                    9000.      1200.       100.      0.002           
 DATE OF MAXIMUM       1982-09-22 1984-10-17 1983-04-20 1982-02-24           
 STANDARD DEVIATION         2667.       372.        26.      0.001           




                               Ba         Hg         Pb         Pb
                            TOTAL       DISS      TOTAL       DISS
                            80011      80111      82001      82101
                          ug/L Hg    ug/L Hg    mg/L Pb    mg/L Pb


 NO. OF L-FLAGGED VALUES        1          0          0          2
 NO. OF G-FLAGGED VALUES        0          0          0          0
 NO. OF UNFLAGGED VALUES       12          2         16          0
 MEAN                       0.062      0.000      0.009      0.001
 MINIMUM                    0.000                 0.002           
 DATE OF MINIMUM       1984-12-12            1984-09-24           
 10TH PERCENTILE            0.000                 0.003           
 MEDIAN                     0.050                 0.008           
 90TH PERCENTILE            0.161                 0.015           
 MAXIMUM                    0.170                 0.026           
 DATE OF MAXIMUM       1983-10-19            1982-02-24           
 STANDARD DEVIATION         0.063                 0.006           





 STATION - HEER/AGIMONT - MEUSE RIVER               STATION NO. 051012
 COUNTRY - BELGIUM                                  DEPTH(M)    9999.9
 LOCATION - OCT. 3  LAT. 50/10/00  LONG. 004/50/00  ELEVATION(M)9999.9
 REGIONAL CENTRE - EURA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-02-03 TO 1984-12-27

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP        TOC    PHENOLS         CN
                             COND                                            
                            02041      02061      06001      06532      06606
                            us/cm      deg C     mg/L C       mg/L    mg/L Cn


 NO. OF L-FLAGGED VALUES        0          0          0          1          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         22         16          5          9
 MEAN                        356.       12.8         4.      0.005      0.005
 MINIMUM                     225.        4.0         1.      0.005      0.005
 DATE OF MINIMUM       1984-02-09 1984-12-27 1983-03-14 1984-02-09 1982-06-03
 10TH PERCENTILE             288.        4.6         1.                 0.005
 MEDIAN                      355.       10.5         4.      0.005      0.005
 90TH PERCENTILE             422.       22.3         6.                 0.005
 MAXIMUM                     430.       26.0         7.      0.005      0.009
 DATE OF MAXIMUM       1983-11-30 1984-08-23 1982-08-12 1984-12-27 1983-09-26
 STANDARD DEVIATION           47.        7.3         2.      0.000      0.001




                         CHLORO A     N KJEL      NO2-N      NO3-N        NH3
                                                                             
                            06711      07004      07207      07313      07555
                             mg/L     mg/L N     mg/L N     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        2          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        6         16         22         22         21
 MEAN                      0.0300        2.2       0.02       2.06       0.12
 MINIMUM                   0.0001        0.1       0.01       0.89       0.01
 DATE OF MINIMUM       1984-12-13 1982-10-06 1982-02-03 1984-08-23 1984-10-17
 10TH PERCENTILE                         0.1       0.01       1.10       0.03
 MEDIAN                    0.0125        1.8       0.02       2.10       0.11
 90TH PERCENTILE                         4.2       0.03       3.00       0.18
 MAXIMUM                   0.1390        4.9       0.05       3.20       0.47
 DATE OF MAXIMUM       1984-06-22 1984-02-09 1983-03-14 1984-12-13 1984-09-26
 STANDARD DEVIATION        0.0478        1.7       0.01       0.69       0.10




                          PERCENT         O2        BOD        COD          F
                           DO SAT       DISS                             DISS
                            08001      08101      08201      08301      09105
                          PERCENT    mg/L O2    mg/L O2    mg/L O2     mg/L F


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         22         19         21         18
 MEAN                        103.       10.7         4.        15.        0.1
 MINIMUM                      79.        7.4         1.         0.        0.0
 DATE OF MINIMUM       1984-10-17 1982-06-03 1984-10-17 1984-12-13 1984-12-13
 10TH PERCENTILE              87.        8.2         2.         3.        0.0
 MEDIAN                      102.       10.8         3.        16.        0.1
 90TH PERCENTILE             121.       12.3         6.        24.        0.2
 MAXIMUM                     129.       13.6         8.        29.        0.3
 DATE OF MAXIMUM       1983-09-26 1984-12-27 1984-06-22 1983-11-30 1982-04-01
 STANDARD DEVIATION           12.        1.7         2.         8.        0.1




                               pH   SUSP SOL       TENS         Si    P ORTHO
                                     105 DEG    ANIONIC   REACTIVE      TOTAL
                            10301      10401      10702      14101      15205
                         pH UNITS       mg/L       mg/L   mg/LSiO2     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         17         14          4         15
 MEAN                         7.8        34.        0.0       4.40      0.305
 MINIMUM                      7.2         4.        0.0       0.10      0.110
 DATE OF MINIMUM       1984-02-09 1984-10-17 1982-02-03 1984-06-22 1982-04-01
 10TH PERCENTILE              7.3         8.        0.0                 0.115
 MEDIAN                       7.8        30.        0.0       5.20      0.220
 90TH PERCENTILE              8.0        60.        0.0                 0.595
 MAXIMUM                      8.5       140.        0.0       7.10      0.760
 DATE OF MAXIMUM       1984-06-22 1984-02-09 1983-01-20 1984-12-13 1984-04-05
 STANDARD DEVIATION           0.3        33.        0.0       3.07      0.209




                          P ORTHO   SULPHATE         Cl         Cr         Mn
                             DISS                  DISS      TOTAL      TOTAL
                            15255      16301      17204      24002      25004
                           mg/L P   mg/L SO4    mg/L Cl    mg/L Cr    mg/L Mn


 NO. OF L-FLAGGED VALUES        0          0          0          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         21         22         11         16
 MEAN                       0.109        31.        13.      0.002       0.08
 MINIMUM                    0.050        14.         5.      0.001       0.02
 DATE OF MINIMUM       1983-03-14 1983-03-14 1982-04-01 1984-02-09 1983-01-20
 10TH PERCENTILE            0.060        20.         6.      0.001       0.02
 MEDIAN                     0.095        32.        12.      0.002       0.06
 90TH PERCENTILE            0.178        41.        19.      0.004       0.16
 MAXIMUM                    0.220        42.        28.      0.007       0.25
 DATE OF MAXIMUM       1982-08-12 1984-03-15 1982-10-06 1982-10-06 1984-06-22
 STANDARD DEVIATION         0.049         8.         5.      0.002       0.06




                               Fe         Ni         Cu         Zn   COLIFORM
                            TOTAL      TOTAL      TOTAL      TOTAL      TOTAL
                            26004      28001      29006      30004      36002
                          mg/L Fe    mg/L Ni    mg/L Cu    mg/L Zn   No/100ml


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       17         13         13         13         17
 MEAN                        0.30      0.003      0.007      0.049       134.
 MINIMUM                     0.02      0.001      0.003      0.020        10.
 DATE OF MINIMUM       1984-12-13 1982-08-12 1984-02-09 1982-02-03 1984-08-23
 10TH PERCENTILE             0.03      0.001      0.003      0.020        28.
 MEDIAN                      0.34      0.002      0.006      0.050       120.
 90TH PERCENTILE             0.43      0.005      0.009      0.079       280.
 MAXIMUM                     1.03      0.017      0.025      0.087       300.
 DATE OF MAXIMUM       1983-11-30 1983-11-30 1983-07-27 1983-07-27 1983-11-30
 STANDARD DEVIATION          0.23      0.004      0.006      0.025        89.



                         FAEC COL       FAEC         Cd         Ba         Pb
                                       STREP      TOTAL      TOTAL      TOTAL
                            36012      36102      48001      80011      82001
                         No/100ml   No/100ml    mg/L Cd    ug/L Hg    mg/L Pb


 NO. OF L-FLAGGED VALUES        0          0          1          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       17         16         12         10         14
 MEAN                         30.         8.      0.000      0.140      0.008
 MINIMUM                       2.         0.      0.000      0.000      0.003
 DATE OF MINIMUM       1984-08-23 1982-06-03 1982-02-03 1984-12-27 1984-12-27
 10TH PERCENTILE               3.         0.      0.000      0.003      0.003
 MEDIAN                       30.         3.      0.000      0.120      0.007
 90TH PERCENTILE              55.        19.      0.001      0.257      0.011
 MAXIMUM                      70.        24.      0.001      0.380      0.016
 DATE OF MAXIMUM       1982-12-08 1982-12-08 1984-02-09 1983-05-18 1983-03-14
 STANDARD DEVIATION           18.         9.      0.000      0.114      0.003





 STATION - LANAYE/TERNAAIEN - MEUSE RIVER           STATION NO. 051013
 COUNTRY - BELGIUM                                  DEPTH(M)    9999.9
 LOCATION - OCT. 3  LAT. 50/47/00  LONG. 005/41/00  ELEVATION(M)9999.9
 REGIONAL CENTRE - EURA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-01-25 TO 1984-12-11

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP        TOC    PHENOLS         CN
                             COND                                            
                            02041      02061      06001      06532      06606
                            us/cm      deg C     mg/L C       mg/L    mg/L Cn


 NO. OF L-FLAGGED VALUES        0          0          1          2          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       40         39         32         19         32
 MEAN                        474.       14.6         4.      0.006      0.010
 MINIMUM                     110.        5.0         1.      0.001      0.003
 DATE OF MINIMUM       1984-05-29 1982-01-25 1983-05-02 1984-05-29 1982-09-21
 10TH PERCENTILE             320.        6.0         2.      0.001      0.005
 MEDIAN                      445.       14.5         4.      0.005      0.007
 90TH PERCENTILE             660.       21.9         6.      0.010      0.019
 MAXIMUM                    1020.       40.0        10.      0.020      0.025
 DATE OF MAXIMUM       1983-10-18 1982-09-21 1982-02-23 1983-12-13 1983-10-18
 STANDARD DEVIATION          167.        7.4         2.      0.005      0.006




                         CHLORO A     N KJEL      NO2-N      NO3-N        NH3
                                                                             
                            06711      07004      07207      07313      07555
                             mg/L     mg/L N     mg/L N     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        3          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        8         34         37         40         40
 MEAN                      0.0219        2.7       0.11       2.55       0.64
 MINIMUM                   0.0001        0.3       0.03       0.03       0.06
 DATE OF MINIMUM       1984-10-31 1983-09-20 1982-03-24 1983-10-18 1983-06-01
 10TH PERCENTILE           0.0001        0.9       0.03       1.90       0.21
 MEDIAN                    0.0050        2.3       0.10       2.60       0.49
 90TH PERCENTILE           0.0370        4.6       0.20       3.20       1.20
 MAXIMUM                   0.1170        7.1       0.40       4.30       2.70
 DATE OF MAXIMUM       1984-08-21 1984-05-29 1982-01-25 1984-01-10 1984-01-10
 STANDARD DEVIATION        0.0352        1.6       0.08       0.76       0.54




                          PERCENT         O2        BOD        COD          F
                           DO SAT       DISS                             DISS
                            08001      08101      08201      08301      09105
                          PERCENT    mg/L O2    mg/L O2    mg/L O2     mg/L F


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       39         40         40         40         39
 MEAN                         85.        8.7         4.        23.        0.7
 MINIMUM                      42.        3.6         1.         5.        0.1
 DATE OF MINIMUM       1982-09-21 1982-09-21 1982-06-02 1984-03-08 1984-04-03
 10TH PERCENTILE              59.        5.4         2.        10.        0.2
 MEDIAN                       84.        8.6         4.        20.        0.4
 90TH PERCENTILE             104.       11.9         7.        41.        1.5
 MAXIMUM                     125.       13.2         9.        70.        4.0
 DATE OF MAXIMUM       1983-04-06 1984-01-10 1984-08-21 1983-10-18 1982-01-25
 STANDARD DEVIATION           19.        2.5         2.        15.        0.7




                               pH   SUSP SOL       TENS    P ORTHO    P ORTHO
                                     105 DEG    ANIONIC      TOTAL       DISS
                            10301      10401      10702      15205      15255
                         pH UNITS       mg/L       mg/L     mg/L P     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          1          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       40         40         34         33         40
 MEAN                         7.7        36.        0.0      0.533      0.397
 MINIMUM                      7.1         5.        0.0      0.170      0.120
 DATE OF MINIMUM       1984-10-31 1984-10-31 1982-09-21 1984-02-07 1984-02-07
 10TH PERCENTILE              7.4         7.        0.0      0.263      0.140
 MEDIAN                       7.7        17.        0.0      0.460      0.270
 90TH PERCENTILE              7.8        60.        0.1      0.992      0.530
 MAXIMUM                      7.9       240.        0.3      1.490      3.600
 DATE OF MAXIMUM       1983-06-01 1984-05-29 1983-10-18 1983-10-18 1983-12-13
 STANDARD DEVIATION           0.2        51.        0.1      0.301      0.551




                         SULPHATE         Cl         Cr         Mn         Fe
                                        DISS      TOTAL      TOTAL      TOTAL
                            16301      17204      24002      25004      26004
                         mg/L SO4    mg/L Cl    mg/L Cr    mg/L Mn    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       40         40         33         22         29
 MEAN                         47.        48.      0.008       0.12       0.65
 MINIMUM                      16.        18.      0.001       0.02       0.03
 DATE OF MINIMUM       1984-10-31 1983-03-08 1984-12-11 1982-06-02 1982-08-24
 10TH PERCENTILE              26.        19.      0.002       0.03       0.07
 MEDIAN                       43.        44.      0.005       0.10       0.37
 90TH PERCENTILE              66.        79.      0.015       0.16       1.47
 MAXIMUM                     230.       126.      0.039       0.32       2.82
 DATE OF MAXIMUM       1984-11-13 1983-11-15 1982-12-14 1984-02-07 1984-02-07
 STANDARD DEVIATION           32.        25.      0.007       0.07       0.65




                               Ni         Cu         Zn   COLIFORM   FAEC COL
                            TOTAL      TOTAL      TOTAL      TOTAL           
                            28001      29006      30004      36002      36012
                          mg/L Ni    mg/L Cu    mg/L Zn   No/100ml   No/100ml


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       30         30         30         36         34
 MEAN                       0.004      0.007      0.091       898.       262.
 MINIMUM                    0.001      0.001      0.023        74.        17.
 DATE OF MINIMUM       1983-03-08 1983-11-15 1983-03-08 1984-07-24 1983-11-15
 10TH PERCENTILE            0.001      0.002      0.026       190.        33.
 MEDIAN                     0.003      0.005      0.059       610.       165.
 90TH PERCENTILE            0.006      0.013      0.173      1920.       588.
 MAXIMUM                    0.015      0.033      0.400      3500.      1200.
 DATE OF MAXIMUM       1982-12-14 1983-04-06 1982-01-25 1984-05-29 1982-07-27
 STANDARD DEVIATION         0.003      0.007      0.086       810.       276.




                             FAEC         Cd         Ba         Pb
                            STREP      TOTAL      TOTAL      TOTAL
                            36102      48001      80011      82001
                         No/100ml    mg/L Cd    ug/L Hg    mg/L Pb


 NO. OF L-FLAGGED VALUES        0          0          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0
 NO. OF UNFLAGGED VALUES       34         32         29         27
 MEAN                         25.      0.001      0.148      1.604
 MINIMUM                       0.      0.000      0.000      0.002
 DATE OF MINIMUM       1983-09-20 1982-02-23 1984-10-31 1983-03-08
 10TH PERCENTILE               1.      0.000      0.030      0.005
 MEDIAN                       20.      0.001      0.140      0.012
 90TH PERCENTILE              51.      0.001      0.330      5.000
 MAXIMUM                     150.      0.007      0.450     15.000
 DATE OF MAXIMUM       1984-05-29 1984-02-07 1982-03-24 1982-01-25
 STANDARD DEVIATION           28.      0.001      0.118      3.861





 STATION - MARTELANGE -SURE RIVER                   STATION NO. 051014
 COUNTRY - BELGIUM                                  DEPTH(M)    9999.9
 LOCATION - OCT. 3  LAT. 49/51/00  LONG. 005/43/00  ELEVATION(M)9999.9
 REGIONAL CENTRE - EURA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-02-10 TO 1984-12-20

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP        TOC    PHENOLS         CN
                             COND                                            
                            02041      02061      06001      06532      06606
                            us/cm      deg C     mg/L C       mg/L    mg/L Cn


 NO. OF L-FLAGGED VALUES        0          0          1          2          2
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       20         20         14          5         11
 MEAN                        117.        8.9         5.      0.005      0.011
 MINIMUM                      33.        3.0         1.      0.005      0.001
 DATE OF MINIMUM       1984-03-15 1984-03-15 1983-02-03 1983-10-04 1983-04-07
 10TH PERCENTILE              60.        3.1         1.                 0.001
 MEDIAN                      112.        5.2         3.      0.005      0.005
 90TH PERCENTILE             150.       16.1         8.                 0.019
 MAXIMUM                     197.       20.0        27.      0.005      0.060
 DATE OF MAXIMUM       1983-10-04 1982-08-04 1984-03-22 1984-12-20 1983-06-06
 STANDARD DEVIATION           35.        5.7         6.      0.000      0.016




                         CHLORO A     N KJEL      NO2-N      NO3-N        NH3
                                                                             
                            06711      07004      07207      07313      07555
                             mg/L     mg/L N     mg/L N     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        2          0          3          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        2         15         14         19         19
 MEAN                      0.0038        2.3       0.02       2.83       0.26
 MINIMUM                   0.0001        0.4       0.01       1.40       0.00
 DATE OF MINIMUM       1984-11-30 1984-03-22 1982-12-02 1982-10-01 1984-03-15
 10TH PERCENTILE                         0.6       0.01       1.76       0.03
 MEDIAN                    0.0016        1.9       0.02       2.70       0.18
 90TH PERCENTILE                         4.4       0.03       4.00       0.44
 MAXIMUM                   0.0120        6.8       0.05       4.10       1.20
 DATE OF MAXIMUM       1984-08-30 1984-11-30 1982-08-04 1984-03-15 1982-06-09
 STANDARD DEVIATION        0.0056        1.8       0.01       0.81       0.29




                          PERCENT         O2        BOD        COD          F
                           DO SAT       DISS                             DISS
                            08001      08101      08201      08301      09105
                          PERCENT    mg/L O2    mg/L O2    mg/L O2     mg/L F


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       20         20         20         20         12
 MEAN                         97.       11.1         4.        17.        0.2
 MINIMUM                      81.        7.2         0.         4.        0.0
 DATE OF MINIMUM       1982-08-04 1982-08-04 1982-04-14 1982-04-14 1984-08-30
 10TH PERCENTILE              86.        8.6         2.         6.        0.0
 MEDIAN                       97.       11.4         4.        16.        0.1
 90TH PERCENTILE             105.       12.7         6.        26.        0.3
 MAXIMUM                     113.       13.8         7.        36.        0.7
 DATE OF MAXIMUM       1983-10-04 1983-12-07 1984-08-30 1983-10-04 1982-10-01
 STANDARD DEVIATION            7.        1.8         2.         9.        0.2




                               pH   SUSP SOL       TENS    P ORTHO    P ORTHO
                                     105 DEG    ANIONIC      TOTAL       DISS
                            10301      10401      10702      15205      15255
                         pH UNITS       mg/L       mg/L     mg/L P     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       20         19         15         17         20
 MEAN                         7.1        30.        0.0      0.322      0.089
 MINIMUM                      6.6         4.        0.0      0.070      0.010
 DATE OF MINIMUM       1982-10-01 1984-09-20 1982-04-14 1984-03-22 1982-04-14
 10TH PERCENTILE              6.6         9.        0.0      0.091      0.020
 MEDIAN                       7.0        30.        0.0      0.200      0.060
 90TH PERCENTILE              7.8        51.        0.1      0.786      0.160
 MAXIMUM                      8.2        90.        0.2      0.820      0.300
 DATE OF MAXIMUM       1984-12-20 1983-04-07 1983-12-07 1984-12-20 1983-10-04
 STANDARD DEVIATION           0.4        23.        0.1      0.253      0.082




                         SULPHATE         Cl         Cr         Mn         Fe
                                        DISS      TOTAL      TOTAL      TOTAL
                            16301      17204      24002      25004      26004
                         mg/L SO4    mg/L Cl    mg/L Cr    mg/L Mn    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          2          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       19         19         11         15         16
 MEAN                         10.        12.      0.002       0.10       0.37
 MINIMUM                       5.         4.      0.001       0.03       0.07
 DATE OF MINIMUM       1984-11-30 1984-12-20 1982-06-09 1983-04-07 1984-03-22
 10TH PERCENTILE               7.         6.      0.001       0.03       0.12
 MEDIAN                       10.        12.      0.002       0.06       0.26
 90TH PERCENTILE              14.        18.      0.003       0.15       0.65
 MAXIMUM                      18.        21.      0.004       0.48       1.23
 DATE OF MAXIMUM       1984-06-08 1984-03-15 1982-04-14 1984-11-30 1983-10-04
 STANDARD DEVIATION            3.         5.      0.001       0.11       0.31




                               Ni         Cu         Zn   COLIFORM   FAEC COL
                            TOTAL      TOTAL      TOTAL      TOTAL           
                            28001      29006      30004      36002      36012
                          mg/L Ni    mg/L Cu    mg/L Zn   No/100ml   No/100ml


 NO. OF L-FLAGGED VALUES        0          0          2          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       16         13          7         17         17
 MEAN                       0.005      0.005      0.029       610.       262.
 MINIMUM                    0.002      0.002      0.020        15.         6.
 DATE OF MINIMUM       1983-02-03 1984-03-22 1982-12-02 1983-04-07 1983-04-07
 10TH PERCENTILE            0.002      0.002                   24.         9.
 MEDIAN                     0.004      0.004      0.024       144.        86.
 90TH PERCENTILE            0.008      0.007                 2300.       497.
 MAXIMUM                    0.010      0.011      0.060      3200.      2200.
 DATE OF MAXIMUM       1982-06-09 1982-02-10 1982-02-10 1984-08-30 1982-08-04
 STANDARD DEVIATION         0.003      0.002      0.013       982.       534.



                             FAEC         Cd         Ba         Pb
                            STREP      TOTAL      TOTAL      TOTAL
                            36102      48001      80011      82001
                         No/100ml    mg/L Cd    ug/L Hg    mg/L Pb


 NO. OF L-FLAGGED VALUES        0          1          2          2
 NO. OF G-FLAGGED VALUES        0          0          0          0
 NO. OF UNFLAGGED VALUES       17         14         11         13
 MEAN                         35.      0.000      0.121      0.004
 MINIMUM                       0.      0.000      0.000      0.001
 DATE OF MINIMUM       1982-02-10 1982-12-02 1984-11-30 1982-12-02
 10TH PERCENTILE               1.      0.000      0.000      0.001
 MEDIAN                       11.      0.000      0.060      0.002
 90TH PERCENTILE              28.      0.001      0.265      0.008
 MAXIMUM                     410.      0.001      0.310      0.009
 DATE OF MAXIMUM       1983-10-04 1982-06-09 1983-10-04 1982-02-10
 STANDARD DEVIATION           97.      0.000      0.112      0.003





 STATION - ZELZATE - GHENT/TERNEUZEN                STATION NO. 051015
 COUNTRY - BELGIUM                                  DEPTH(M)    9999.9
 LOCATION - OCT. 3  LAT. 51/12/00  LONG. 003/48/00  ELEVATION(M)9999.9
 REGIONAL CENTRE - EURA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-03-02 TO 1984-12-04

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP        TOC    PHENOLS         CN
                             COND                                            
                            02041      02061      06001      06532      06606
                            us/cm      deg C     mg/L C       mg/L    mg/L Cn


 NO. OF L-FLAGGED VALUES        0          0          0          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       29         28         16         13         21
 MEAN                       4058.       15.8        16.      0.012      0.022
 MINIMUM                    1060.        5.9         7.      0.005      0.001
 DATE OF MINIMUM       1984-06-05 1983-02-22 1983-09-05 1983-06-20 1982-09-07
 10TH PERCENTILE            2184.        7.6         8.      0.005      0.005
 MEDIAN                     3600.       16.1        11.      0.010      0.010
 90TH PERCENTILE            7105.       23.1        22.      0.020      0.039
 MAXIMUM                    8637.       24.5        72.      0.040      0.099
 DATE OF MAXIMUM       1983-12-19 1983-08-22 1982-06-01 1984-03-06 1982-12-07
 STANDARD DEVIATION         1905.        6.0        16.      0.010      0.023




                         CHLORO A     N KJEL      NO2-N      NO3-N        NH3
                                                                             
                            06711      07004      07207      07313      07555
                             mg/L     mg/L N     mg/L N     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        2          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0         15         29         28         29
 MEAN                      0.0001       11.1       0.61       1.68       8.61
 MINIMUM                                 7.7       0.01       0.02       6.10
 DATE OF MINIMUM                  1982-03-11 1983-12-06 1984-06-19 1983-04-25
 10TH PERCENTILE                         8.0       0.01       0.03       6.20
 MEDIAN                                  9.5       0.41       0.80       7.90
 90TH PERCENTILE                        13.8       1.61       4.91      11.94
 MAXIMUM                                20.4       2.06       6.60      12.60
 DATE OF MAXIMUM                  1982-05-06 1984-04-09 1984-03-06 1984-08-01
 STANDARD DEVIATION                      3.3       0.61       1.94       2.13




                          PERCENT         O2        BOD        COD          F
                           DO SAT       DISS                             DISS
                            08001      08101      08201      08301      09105
                          PERCENT    mg/L O2    mg/L O2    mg/L O2     mg/L F


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       27         28         26         29         25
 MEAN                         31.        3.0         6.        66.        3.8
 MINIMUM                       6.        0.6         1.        15.        1.7
 DATE OF MINIMUM       1983-12-19 1984-09-17 1983-02-22 1982-09-07 1982-03-02
 10TH PERCENTILE              11.        1.2         2.        28.        1.8
 MEDIAN                       33.        3.0         5.        57.        3.6
 90TH PERCENTILE              44.        4.1         9.        97.        6.0
 MAXIMUM                      52.        4.6        17.       241.        8.6
 DATE OF MAXIMUM       1982-07-12 1983-03-01 1984-09-17 1982-12-07 1984-06-19
 STANDARD DEVIATION           12.        1.1         3.        44.        1.7





                               pH   SUSP SOL       TENS    P ORTHO    P ORTHO
                                     105 DEG    ANIONIC      TOTAL       DISS
                            10301      10401      10702      15205      15255
                         pH UNITS       mg/L       mg/L     mg/L P     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       29         18         22         17         29
 MEAN                         7.2        40.        0.1      2.741      2.486
 MINIMUM                      6.3        10.        0.0      1.120      0.670
 DATE OF MINIMUM       1983-10-17 1982-03-02 1982-09-09 1983-02-22 1982-03-02
 10TH PERCENTILE              6.9        10.        0.1      1.134      1.073
 MEDIAN                       7.2        30.        0.1      2.670      2.500
 90TH PERCENTILE              7.4       100.        0.2      4.490      3.685
 MAXIMUM                      7.5       110.        0.2      4.830      4.400
 DATE OF MAXIMUM       1983-06-20 1982-09-07 1982-03-02 1984-08-01 1983-12-06
 STANDARD DEVIATION           0.3        33.        0.1      1.159      0.966




                         SULPHATE         Cl    O,P-DDE         Cr         Mn
                                        DISS                 TOTAL      TOTAL
                            16301      17204      18025      24002      25004
                         mg/L SO4    mg/L Cl       ug/L    mg/L Cr    mg/L Mn


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       27         29          1         19         20
 MEAN                        335.      1254.      0.020      0.007       1.32
 MINIMUM                     170.       431.                 0.001       0.61
 DATE OF MINIMUM       1984-12-04 1982-05-06            1984-06-05 1983-04-25
 10TH PERCENTILE             202.       515.                 0.002       0.61
 MEDIAN                      298.       990.                 0.004       1.35
 90TH PERCENTILE             530.      2364.                 0.014       1.89
 MAXIMUM                     667.      2960.                 0.021       2.34
 DATE OF MAXIMUM       1984-08-01 1983-12-06            1983-03-01 1982-11-17
 STANDARD DEVIATION          127.       726.                 0.006       0.51




                               Fe         Ni         Cu         Zn   COLIFORM
                            TOTAL      TOTAL      TOTAL      TOTAL      TOTAL
                            26004      28001      29006      30004      36002
                          mg/L Fe    mg/L Ni    mg/L Cu    mg/L Zn   No/100ml


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       19         20         16         19         13
 MEAN                        0.48      0.011      0.007      0.106       556.
 MINIMUM                     0.20      0.007      0.002      0.030         9.
 DATE OF MINIMUM       1982-07-12 1983-02-22 1982-12-07 1982-07-12 1984-08-01
 10TH PERCENTILE             0.23      0.007      0.002      0.048         9.
 MEDIAN                      0.46      0.010      0.007      0.110       210.
 90TH PERCENTILE             0.72      0.015      0.011      0.147       474.
 MAXIMUM                     0.95      0.024      0.024      0.160      4800.
 DATE OF MAXIMUM       1982-03-11 1982-06-01 1984-06-05 1982-03-02 1983-04-25
 STANDARD DEVIATION          0.21      0.004      0.005      0.034      1286.




                         FAEC COL       FAEC         Cd         Ba         Pb
                                       STREP      TOTAL      TOTAL      TOTAL
                            36012      36102      48001      80011      82001
                         No/100ml   No/100ml    mg/L Cd    ug/L Hg    mg/L Pb


 NO. OF L-FLAGGED VALUES        0          0          0          1          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       13         13         16         16         16
 MEAN                         21.         1.      0.000      2.106      0.010
 MINIMUM                       0.         0.      0.000      0.000      0.001
 DATE OF MINIMUM       1982-03-11 1982-03-11 1984-06-05 1984-12-04 1984-12-04
 10TH PERCENTILE               1.         0.      0.000      0.021      0.002
 MEDIAN                       10.         0.      0.000      0.100      0.007
 90TH PERCENTILE              27.         3.      0.001      0.567      0.018
 MAXIMUM                     150.         6.      0.001     33.000      0.027
 DATE OF MAXIMUM       1982-09-09 1983-02-22 1982-12-07 1982-09-07 1982-09-07
 STANDARD DEVIATION           40.         2.      0.000      7.963      0.007





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GEMS/WATER
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Last updated: 2001-07-30