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STATISTICS for BELGIUM

STATISTICS FOR BELGIUM


GEMS/WATER - STATISTICAL SUMMARY BY STATION     2002-02-15   PAGE  40

 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  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1979-02-01 TO 1981-11-04

 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       16         16         12          1         10
 MEAN                        858.       12.0         8.      0.005      0.021
 MINIMUM                     600.        3.0         3.                 0.005
 DATE OF MINIMUM       1981-07-01 1980-01-14 1979-10-04            1980-05-12
 10TH PERCENTILE             702.        3.3         3.                 0.005
 MEDIAN                      858.       13.0         9.                 0.010
 90TH PERCENTILE             968.       18.7        10.                 0.065
 MAXIMUM                    1050.       20.0        13.                 0.075
 DATE OF MAXIMUM       1979-10-04 1980-08-06 1980-11-05            1981-05-04
 STANDARD DEVIATION          106.        5.9         3.                 0.026




                           N KJEL      NO2-N      NO3-N        NH3    PERCENT
                                                                       DO SAT
                            07004      07207      07313      07555      08001
                           mg/L N     mg/L N     mg/L N     mg/L N    PERCENT


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        6         16         15         16         16
 MEAN                         8.7       0.42       3.97       8.04        53.
 MINIMUM                      5.9       0.21       2.50       3.00        16.
 DATE OF MINIMUM       1979-04-02 1979-04-02 1979-08-02 1981-11-04 1979-08-02
 10TH PERCENTILE                        0.22       2.60       3.72        29.
 MEDIAN                       8.2       0.36       3.90       7.30        52.
 90TH PERCENTILE                        0.80       4.90      13.48        70.
 MAXIMUM                     12.8       0.93       6.30      16.10        88.
 DATE OF MAXIMUM       1980-03-11 1981-07-01 1981-07-01 1979-10-04 1981-05-04
 STANDARD DEVIATION           2.4       0.22       0.98       3.89        16.




                               O2        BOD        COD          F         pH
                             DISS                             DISS           
                            08101      08201      08301      09105      10301
                          mg/L O2    mg/L O2    mg/L O2     mg/L F   pH UNITS


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       16         16         16         16         16
 MEAN                         5.7         7.        39.        0.5        7.4
 MINIMUM                      1.4         3.         4.        0.4        7.1
 DATE OF MINIMUM       1979-08-02 1981-11-04 1981-01-12 1981-05-04 1979-04-02
 10TH PERCENTILE              2.7         3.        18.        0.4        7.1
 MEDIAN                       5.6         5.        42.        0.5        7.4
 90TH PERCENTILE              7.6        12.        49.        0.7        7.6
 MAXIMUM                      9.6        28.        61.        1.1        7.8
 DATE OF MAXIMUM       1981-05-04 1980-03-11 1981-09-07 1979-10-04 1981-11-04
 STANDARD DEVIATION           1.9         6.        13.        0.2        0.2




                         SUSP SOL       TENS    P ORTHO    P ORTHO   SULPHATE
                          105 DEG    ANIONIC      TOTAL       DISS           
                            10401      10702      15205      15255      16301
                             mg/L       mg/L     mg/L P     mg/L P   mg/L SO4


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       16         16          7         16         16
 MEAN                         78.        0.1      0.963      0.756       136.
 MINIMUM                      20.        0.0      0.600      0.460        92.
 DATE OF MINIMUM       1980-03-11 1981-11-04 1980-05-12 1980-05-12 1981-07-01
 10TH PERCENTILE              20.        0.0                 0.466       102.
 MEDIAN                       75.        0.1      0.820      0.750       135.
 90TH PERCENTILE             116.        0.2                 1.004       168.
 MAXIMUM                     190.        0.4      1.400      1.400       170.
 DATE OF MAXIMUM       1979-04-02 1979-02-01 1980-01-14 1979-10-04 1980-01-14
 STANDARD DEVIATION           43.        0.1      0.306      0.258        22.




                               Cl         Cr         Mn         Fe         Ni
                             DISS      TOTAL      TOTAL      TOTAL      TOTAL
                            17204      24002      25004      26004      28001
                          mg/L Cl    mg/L Cr    mg/L Mn    mg/L Fe    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       16         15         15         15         15
 MEAN                         62.      0.011       0.63       0.76      0.009
 MINIMUM                      27.      0.004       0.30       0.28      0.001
 DATE OF MINIMUM       1981-07-01 1981-11-04 1979-08-02 1979-10-04 1979-08-02
 10TH PERCENTILE              42.      0.004       0.31       0.34      0.003
 MEDIAN                       60.      0.009       0.64       0.68      0.009
 90TH PERCENTILE              82.      0.019       0.87       1.24      0.013
 MAXIMUM                      91.      0.032       1.20       1.53      0.013
 DATE OF MAXIMUM       1979-10-04 1979-02-01 1979-10-04 1979-04-02 1979-10-04
 STANDARD DEVIATION           15.      0.008       0.26       0.35      0.004




                               Cu         Zn   COLIFORM   FAEC COL       FAEC
                            TOTAL      TOTAL      TOTAL                 STREP
                            29006      30004      36002      36012      36102
                          mg/L Cu    mg/L Zn   No/100ml   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       15         15         14         12         10
 MEAN                       0.017      0.116      4492.       146.       579.
 MINIMUM                    0.004      0.030       195.         4.         0.
 DATE OF MINIMUM       1980-09-16 1979-08-02 1979-04-02 1979-05-14 1979-05-14
 10TH PERCENTILE            0.004      0.035       229.         5.         0.
 MEDIAN                     0.015      0.100      1105.        85.        21.
 90TH PERCENTILE            0.029      0.175     10150.       191.       300.
 MAXIMUM                    0.050      0.350     25000.       830.      5300.
 DATE OF MAXIMUM       1980-05-12 1979-04-02 1979-08-02 1979-08-02 1980-11-05
 STANDARD DEVIATION         0.012      0.079      6998.       225.      1661.




                               Cd         Ba         Pb
                            TOTAL      TOTAL      TOTAL
                            48001      80011      82001
                          mg/L Cd    ug/L Hg    mg/L Pb


 NO. OF L-FLAGGED VALUES        0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES       15         14         15
 MEAN                       0.003      0.572      0.017
 MINIMUM                    0.000      0.080      0.003
 DATE OF MINIMUM       1981-05-04 1981-01-12 1981-09-07
 10TH PERCENTILE            0.001      0.088      0.005
 MEDIAN                     0.002      0.260      0.015
 90TH PERCENTILE            0.005      0.770      0.027
 MAXIMUM                    0.007      3.850      0.048
 DATE OF MAXIMUM       1979-04-02 1979-04-02 1979-04-02
 STANDARD DEVIATION         0.002      0.975      0.011





 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  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1979-02-14 TO 1981-12-14

 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       16         16         14          5         13
 MEAN                        912.       12.7        11.      0.010      0.012
 MINIMUM                     740.        4.0         7.      0.005      0.005
 DATE OF MINIMUM       1981-08-21 1981-12-14 1979-08-29 1979-03-05 1979-08-29
 10TH PERCENTILE             758.        4.6         7.                 0.005
 MEDIAN                      892.       12.5        11.      0.005      0.005
 90TH PERCENTILE            1066.       19.0        16.                 0.010
 MAXIMUM                    1100.       22.0        19.      0.025      0.075
 DATE OF MAXIMUM       1979-03-05 1980-07-29 1980-07-29 1981-03-25 1981-06-04
 STANDARD DEVIATION          107.        6.1         4.      0.009      0.019




                           N KJEL      NO2-N      NO3-N        NH3    PERCENT
                                                                       DO SAT
                            07004      07207      07313      07555      08001
                           mg/L N     mg/L N     mg/L N     mg/L N    PERCENT


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        6         16         13         16         16
 MEAN                         9.1       0.84       4.46       5.01        29.
 MINIMUM                      7.4       0.01       0.07       1.80         0.
 DATE OF MINIMUM       1979-02-14 1981-10-05 1981-10-05 1981-01-21 1979-06-20
 10TH PERCENTILE                        0.15       0.08       1.86         0.
 MEDIAN                       8.0       0.54       4.90       4.90        26.
 90TH PERCENTILE                        1.62       6.99       7.64        61.
 MAXIMUM                     12.8       3.50       9.10       9.70        68.
 DATE OF MAXIMUM       1980-05-19 1979-06-20 1981-12-14 1980-05-19 1981-12-14
 STANDARD DEVIATION           2.2       0.86       2.62       2.28        24.




                               O2        BOD        COD          F         pH
                             DISS                             DISS           
                            08101      08201      08301      09105      10301
                          mg/L O2    mg/L O2    mg/L O2     mg/L F   pH UNITS


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       16         16         16         16         16
 MEAN                         3.3         7.        61.        0.4        7.5
 MINIMUM                      0.0         1.        36.        0.1        7.3
 DATE OF MINIMUM       1979-06-20 1981-01-21 1979-08-29 1980-09-28 1979-03-05
 10TH PERCENTILE              0.0         3.        38.        0.2        7.3
 MEDIAN                       2.7         6.        58.        0.4        7.4
 90TH PERCENTILE              7.5        10.        75.        0.5        7.7
 MAXIMUM                      8.6        14.       123.        0.9        8.1
 DATE OF MAXIMUM       1981-12-14 1979-02-14 1979-11-09 1979-08-29 1979-06-20
 STANDARD DEVIATION           3.0         3.        21.        0.2        0.2




                         SUSP SOL       TENS    P ORTHO    P ORTHO   SULPHATE
                          105 DEG    ANIONIC      TOTAL       DISS           
                            10401      10702      15205      15255      16301
                             mg/L       mg/L     mg/L P     mg/L P   mg/L SO4


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       16         16          6         16         16
 MEAN                         76.        0.4      1.350      1.094       106.
 MINIMUM                      40.        0.1      1.200      0.320        36.
 DATE OF MINIMUM       1979-08-29 1981-01-21 1979-02-14 1981-01-21 1981-08-21
 10TH PERCENTILE              40.        0.1                 0.428        62.
 MEDIAN                       65.        0.3      1.300      1.050       106.
 90TH PERCENTILE             100.        0.7                 1.540       136.
 MAXIMUM                     220.        1.0      1.600      2.000       146.
 DATE OF MAXIMUM       1979-11-09 1980-01-22 1980-05-19 1980-09-28 1979-02-14
 STANDARD DEVIATION           44.        0.3      0.138      0.452        27.




                               Cl         Cr         Mn         Fe         Ni
                             DISS      TOTAL      TOTAL      TOTAL      TOTAL
                            17204      24002      25004      26004      28001
                          mg/L Cl    mg/L Cr    mg/L Mn    mg/L Fe    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       16         15         16         16         16
 MEAN                         85.      0.023       0.15       0.66      0.015
 MINIMUM                      61.      0.002       0.01       0.24      0.008
 DATE OF MINIMUM       1979-11-09 1979-11-09 1979-08-29 1980-09-28 1981-03-25
 10TH PERCENTILE              62.      0.003       0.04       0.28      0.010
 MEDIAN                       83.      0.012       0.15       0.56      0.016
 90TH PERCENTILE             106.      0.045       0.17       1.10      0.019
 MAXIMUM                     123.      0.116       0.38       1.70      0.020
 DATE OF MAXIMUM       1980-09-28 1980-11-17 1981-08-21 1981-06-04 1981-10-05
 STANDARD DEVIATION           18.      0.030       0.08       0.42      0.003




                               Cu         Zn   COLIFORM   FAEC COL       FAEC
                            TOTAL      TOTAL      TOTAL                 STREP
                            29006      30004      36002      36012      36102
                          mg/L Cu    mg/L Zn   No/100ml   No/100ml   No/100ml


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          1          0          0
 NO. OF UNFLAGGED VALUES       15         14         12         16         14
 MEAN                       0.016      0.188     22279.     14289.       731.
 MINIMUM                    0.007      0.020       190.       140.        10.
 DATE OF MINIMUM       1979-11-09 1979-06-20 1979-02-14 1981-12-14 1980-05-19
 10TH PERCENTILE            0.008      0.028       385.       158.        10.
 MEDIAN                     0.011      0.120      6600.       800.       585.
 90TH PERCENTILE            0.029      0.410     71200.     44780.      1300.
 MAXIMUM                    0.041      0.580    100000.     95000.      2700.
 DATE OF MAXIMUM       1979-02-14 1981-12-14 1979-06-20 1980-07-29 1981-06-04
 STANDARD DEVIATION         0.010      0.175     33122.     31768.       700.




                               Cd         Ba         Pb
                            TOTAL      TOTAL      TOTAL
                            48001      80011      82001
                          mg/L Cd    ug/L Hg    mg/L Pb


 NO. OF L-FLAGGED VALUES        0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES       16         16         14
 MEAN                       0.004      0.339      0.026
 MINIMUM                    0.000      0.030      0.005
 DATE OF MINIMUM       1979-08-29 1981-10-05 1980-11-17
 10TH PERCENTILE            0.000      0.042      0.006
 MEDIAN                     0.001      0.260      0.014
 90TH PERCENTILE            0.009      0.712      0.064
 MAXIMUM                    0.020      0.890      0.080
 DATE OF MAXIMUM       1981-12-14 1979-02-14 1979-02-14
 STANDARD DEVIATION         0.005      0.271      0.025





 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  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1979-02-01 TO 1981-11-04

 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       16         19         11         15         15
 MEAN                       1809.       15.2       198.      0.162      0.025
 MINIMUM                     835.        8.0        28.      0.025      0.005
 DATE OF MINIMUM       1981-05-04 1980-01-14 1981-09-07 1981-09-07 1981-09-07
 10TH PERCENTILE            1270.        8.9        34.      0.027      0.006
 MEDIAN                     1720.       16.0       193.      0.175      0.015
 90TH PERCENTILE            2232.       20.0       308.      0.325      0.058
 MAXIMUM                    2800.       20.0       580.      0.360      0.095
 DATE OF MAXIMUM       1979-10-04 1979-10-04 1979-10-04 1979-10-04 1981-05-04
 STANDARD DEVIATION          427.        4.2       151.      0.118      0.026




                           N KJEL      NO2-N      NO3-N        NH3    PERCENT
                                                                       DO SAT
                            07004      07207      07313      07555      08001
                           mg/L N     mg/L N     mg/L N     mg/L N    PERCENT


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        7         15         17         19         15
 MEAN                        37.6       0.51       3.23      19.77        11.
 MINIMUM                     14.7       0.08       0.00       3.00         0.
 DATE OF MINIMUM       1980-01-14 1980-09-16 1980-09-02 1979-10-04 1979-04-02
 10TH PERCENTILE                        0.13       0.35       8.85         0.
 MEDIAN                      39.6       0.52       3.30      19.00         6.
 90TH PERCENTILE                        0.72       5.33      31.51        32.
 MAXIMUM                     67.5       0.89       5.90      36.70        46.
 DATE OF MAXIMUM       1979-08-02 1981-07-01 1981-07-01 1979-05-15 1981-01-12
 STANDARD DEVIATION          21.0       0.22       1.84       8.89        15.




                               O2        BOD        COD          F         pH
                             DISS                             DISS           
                            08101      08201      08301      09105      10301
                          mg/L O2    mg/L O2    mg/L O2     mg/L F   pH UNITS


 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         17         16         19
 MEAN                         1.2       240.       900.       48.4        6.3
 MINIMUM                      0.0         9.       135.       14.0        4.4
 DATE OF MINIMUM       1979-04-02 1981-09-07 1981-09-07 1979-05-14 1980-09-16
 10TH PERCENTILE              0.0        28.       224.       18.2        5.4
 MEDIAN                       0.5       196.       717.       46.5        6.4
 90TH PERCENTILE              3.3       406.      1797.       80.8        6.8
 MAXIMUM                      5.1       736.      2648.       88.0        6.9
 DATE OF MAXIMUM       1981-01-12 1980-11-05 1980-11-05 1979-10-04 1979-05-15
 STANDARD DEVIATION           1.6       188.       706.       21.2        0.6




                         SUSP SOL       TENS    P ORTHO    P ORTHO   SULPHATE
                          105 DEG    ANIONIC      TOTAL       DISS           
                            10401      10702      15205      15255      16301
                             mg/L       mg/L     mg/L P     mg/L P   mg/L SO4


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       16         16          6         16         16
 MEAN                        484.        3.3     65.533     75.822       353.
 MINIMUM                      40.        0.8     23.000     16.900       100.
 DATE OF MINIMUM       1981-09-07 1981-01-12 1979-05-15 1980-08-06 1979-05-14
 10TH PERCENTILE              76.        1.1                23.680       118.
 MEDIAN                      370.        3.0     52.500     58.750       351.
 90TH PERCENTILE             820.        5.7               132.000       463.
 MAXIMUM                    1350.        6.2    133.000    213.000       676.
 DATE OF MAXIMUM       1980-09-16 1979-05-15 1979-08-02 1980-09-16 1980-09-16
 STANDARD DEVIATION          340.        1.6     38.206     51.440       135.




                               Cl         Cr         Mn         Fe         Ni
                             DISS      TOTAL      TOTAL      TOTAL      TOTAL
                            17204      24002      25004      26004      28001
                          mg/L Cl    mg/L Cr    mg/L Mn    mg/L Fe    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       16         15         15         15         14
 MEAN                        133.      1.576       0.48       6.81      0.085
 MINIMUM                      25.      0.080       0.10       0.25      0.032
 DATE OF MINIMUM       1979-10-04 1980-01-14 1980-01-14 1980-01-14 1981-05-04
 10TH PERCENTILE              46.      0.365       0.19       0.59      0.037
 MEDIAN                      139.      1.592       0.50       5.00      0.076
 90TH PERCENTILE             194.      2.475       0.70      13.40      0.151
 MAXIMUM                     200.      2.700       0.96      18.00      0.166
 DATE OF MAXIMUM       1980-05-12 1980-08-06 1980-11-05 1981-07-01 1980-09-16
 STANDARD DEVIATION           47.      0.782       0.21       5.23      0.043




                               Cu         Zn   COLIFORM   FAEC COL       FAEC
                            TOTAL      TOTAL      TOTAL                 STREP
                            29006      30004      36002      36012      36102
                          mg/L Cu    mg/L Zn   No/100ml   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       15         15          8          9         11
 MEAN                       0.097      0.499     54750.     31433.     15945.
 MINIMUM                    0.021      0.060     12000.      1000.      2000.
 DATE OF MINIMUM       1980-01-14 1980-01-14 1980-09-16 1980-09-16 1980-09-16
 10TH PERCENTILE            0.030      0.090                            2120.
 MEDIAN                     0.103      0.480     45000.     13000.      6200.
 90TH PERCENTILE            0.137      0.830                           38900.
 MAXIMUM                    0.155      0.970     99999.     99999.     60000.
 DATE OF MAXIMUM       1980-05-12 1981-05-04 1980-05-12 1979-10-04 1979-10-04
 STANDARD DEVIATION         0.037      0.264     39712.     32971.     19010.




                               Cd         Ba         Pb
                            TOTAL      TOTAL      TOTAL
                            48001      80011      82001
                          mg/L Cd    ug/L Hg    mg/L Pb


 NO. OF L-FLAGGED VALUES        0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES       15         14         15
 MEAN                       0.100      0.661      0.028
 MINIMUM                    0.004      0.050      0.005
 DATE OF MINIMUM       1980-01-14 1980-11-05 1981-09-07
 10TH PERCENTILE            0.013      0.070      0.007
 MEDIAN                     0.094      0.490      0.022
 90TH PERCENTILE            0.183      1.445      0.049
 MAXIMUM                    0.228      2.000      0.072
 DATE OF MAXIMUM       1981-11-04 1979-10-04 1981-05-04
 STANDARD DEVIATION         0.065      0.634      0.018





 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  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1979-02-02 TO 1981-11-05

 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          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       17         17         15          4         10
 MEAN                       8600.       13.3        13.      0.012      0.020
 MINIMUM                    1500.        3.0         5.      0.005      0.005
 DATE OF MINIMUM       1981-08-31 1979-02-02 1980-08-07 1980-05-14 1980-03-11
 10TH PERCENTILE            3075.        3.7         5.                 0.005
 MEDIAN                     8100.       13.0        10.      0.012      0.010
 90TH PERCENTILE           15090.       20.6        26.                 0.050
 MAXIMUM                   20500.       22.0        46.      0.020      0.070
 DATE OF MAXIMUM       1979-10-05 1980-08-07 1980-09-10 1980-11-13 1981-05-06
 STANDARD DEVIATION         5043.        6.4        12.      0.009      0.022




                           N KJEL      NO2-N      NO3-N        NH3    PERCENT
                                                                       DO SAT
                            07004      07207      07313      07555      08001
                           mg/L N     mg/L N     mg/L N     mg/L N    PERCENT


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        7         17         17         17         16
 MEAN                         5.9       0.28       3.67       3.15        21.
 MINIMUM                      1.5       0.02       2.30       0.75         4.
 DATE OF MINIMUM       1979-08-03 1981-05-06 1979-02-02 1981-08-31 1980-11-13
 10TH PERCENTILE                        0.03       2.30       0.93         7.
 MEDIAN                       4.9       0.17       3.60       3.30        17.
 90TH PERCENTILE                        0.59       4.72       4.93        34.
 MAXIMUM                     12.0       0.95       5.80       5.60        52.
 DATE OF MAXIMUM       1979-04-19 1981-08-31 1980-01-16 1979-02-02 1981-01-14
 STANDARD DEVIATION           3.6       0.26       0.97       1.52        12.




                               O2        BOD        COD          F         pH
                             DISS                             DISS           
                            08101      08201      08301      09105      10301
                          mg/L O2    mg/L O2    mg/L O2     mg/L F   pH UNITS


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       16         17         17         16         17
 MEAN                         2.2         8.       306.        1.3        7.1
 MINIMUM                      0.4         2.       104.        0.1        6.9
 DATE OF MINIMUM       1980-11-13 1979-10-05 1979-05-28 1979-02-02 1980-08-07
 10TH PERCENTILE              0.7         2.       108.        0.7        6.9
 MEDIAN                       1.8         9.       200.        1.3        7.1
 90TH PERCENTILE              3.6        14.       742.        1.6        7.3
 MAXIMUM                      6.3        18.       808.        2.1        7.6
 DATE OF MAXIMUM       1981-01-14 1979-02-02 1981-08-31 1979-10-05 1981-05-06
 STANDARD DEVIATION           1.4         5.       228.        0.4        0.2




                         SUSP SOL       TENS    P ORTHO    P ORTHO   SULPHATE
                          105 DEG    ANIONIC      TOTAL       DISS           
                            10401      10702      15205      15255      16301
                             mg/L       mg/L     mg/L P     mg/L P   mg/L SO4


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       15         17          7         17         17
 MEAN                        205.        0.1      0.689      0.706       512.
 MINIMUM                      40.        0.1      0.300      0.260        38.
 DATE OF MINIMUM       1981-07-09 1981-01-14 1980-01-16 1980-01-16 1979-05-28
 10TH PERCENTILE              60.        0.1                 0.316       107.
 MEDIAN                      190.        0.1      0.720      0.660       500.
 90TH PERCENTILE             375.        0.2                 0.956       884.
 MAXIMUM                     500.        0.2      0.870      1.900      1119.
 DATE OF MAXIMUM       1979-02-02 1980-09-10 1979-02-02 1979-10-05 1979-10-05
 STANDARD DEVIATION          134.        0.0      0.187      0.364       291.




                               Cl         Cr         Mn         Fe         Ni
                             DISS      TOTAL      TOTAL      TOTAL      TOTAL
                            17204      24002      25004      26004      28001
                          mg/L Cl    mg/L Cr    mg/L Mn    mg/L Fe    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       17         17         17         17         17
 MEAN                       3416.      0.021       0.43       4.42      0.024
 MINIMUM                    1100.      0.002       0.18       0.04      0.006
 DATE OF MINIMUM       1979-04-19 1980-05-14 1979-10-05 1980-05-14 1979-08-03
 10TH PERCENTILE            1191.      0.005       0.19       0.58      0.007
 MEDIAN                     3110.      0.021       0.38       3.06      0.021
 90TH PERCENTILE            6127.      0.036       0.66       7.58      0.045
 MAXIMUM                    8270.      0.043       0.85      19.50      0.050
 DATE OF MAXIMUM       1979-10-05 1980-09-10 1979-02-02 1979-02-02 1979-04-19
 STANDARD DEVIATION         2089.      0.013       0.18       4.58      0.014




                               Cu         Zn   COLIFORM   FAEC COL       FAEC
                            TOTAL      TOTAL      TOTAL                 STREP
                            29006      30004      36002      36012      36102
                          mg/L Cu    mg/L Zn   No/100ml   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       17         15         10         10         10
 MEAN                       0.029      0.167       649.        26.        15.
 MINIMUM                    0.004      0.020         0.         0.         1.
 DATE OF MINIMUM       1980-05-14 1980-05-14 1979-04-19 1981-01-14 1979-08-03
 10TH PERCENTILE            0.005      0.030         0.         0.         1.
 MEDIAN                     0.019      0.100       370.        20.        10.
 90TH PERCENTILE            0.051      0.365       830.        47.        30.
 MAXIMUM                    0.107      0.520      3270.        90.        43.
 DATE OF MAXIMUM       1979-02-02 1979-02-02 1979-05-28 1981-03-05 1981-03-05
 STANDARD DEVIATION         0.025      0.148       961.        25.        14.




                               Cd         Ba         Pb
                            TOTAL      TOTAL      TOTAL
                            48001      80011      82001
                          mg/L Cd    ug/L Hg    mg/L Pb


 NO. OF L-FLAGGED VALUES        0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES       17         17         16
 MEAN                       0.005      0.628      0.038
 MINIMUM                    0.000      0.030      0.003
 DATE OF MINIMUM       1980-05-14 1981-08-31 1979-10-05
 10TH PERCENTILE            0.001      0.044      0.007
 MEDIAN                     0.003      0.200      0.027
 90TH PERCENTILE            0.011      1.485      0.055
 MAXIMUM                    0.029      3.800      0.220
 DATE OF MAXIMUM       1979-02-02 1979-02-02 1979-02-02
 STANDARD DEVIATION         0.007      1.102      0.051





 STATION - BLEHARIES - SCHELDT RIVER                STATION NO. 051010
 COUNTRY - BELGIUM                                  DEPTH(M)    9999.9
 LOCATION - OCT. 3  LAT. 50/31/00  LONG. 003/24/00  ELEVATION(M)9999.9
 REGIONAL CENTRE - EURA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1979-02-01 TO 1980-11-05

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP      NO3-N        NH3         O2
                             COND                                        DISS
                            02041      02061      07313      07555      08101
                            us/cm      deg C     mg/L N     mg/L N    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       11         11         11         11         11
 MEAN                        903.       12.3       3.78       8.78        5.2
 MINIMUM                     790.        3.0       2.50       4.20        1.4
 DATE OF MINIMUM       1980-05-12 1980-01-14 1979-08-02 1979-04-02 1979-08-02
 10TH PERCENTILE             796.        3.1       2.52       4.23        1.6
 MEDIAN                      880.       15.0       3.80       7.60        5.3
 90TH PERCENTILE            1028.       19.2       4.84      13.58        7.4
 MAXIMUM                    1050.       20.0       5.40      16.10        7.7
 DATE OF MAXIMUM       1979-10-04 1980-08-06 1980-01-14 1979-10-04 1980-01-14
 STANDARD DEVIATION           79.        6.4       0.92       4.06        1.9




                              BOD        COD         pH       TENS    P ORTHO
                                                           ANIONIC      TOTAL
                            08201      08301      10301      10702      15205
                          mg/L O2    mg/L O2   pH UNITS       mg/L     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       11         11         11         11          7
 MEAN                          9.        40.        7.4        0.2      0.963
 MINIMUM                       3.        27.        7.1        0.1      0.600
 DATE OF MINIMUM       1979-08-02 1979-08-02 1979-04-02 1979-04-02 1980-05-12
 10TH PERCENTILE               3.        28.        7.1        0.1           
 MEDIAN                        6.        43.        7.4        0.2      0.820
 90TH PERCENTILE              15.        48.        7.6        0.3           
 MAXIMUM                      28.        51.        7.6        0.4      1.400
 DATE OF MAXIMUM       1980-03-11 1979-05-14 1980-09-16 1979-02-01 1980-01-14
 STANDARD DEVIATION            7.         8.        0.2        0.1      0.306




                               Cl   FAEC COL       FAEC         Cd         Ba
                             DISS                 STREP      TOTAL      TOTAL
                            17204      36012      36102      48001      80011
                          mg/L Cl   No/100ml   No/100ml    mg/L Cd    ug/L Hg


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       11          8          7         10         10
 MEAN                         67.       166.       819.      0.003      0.750
 MINIMUM                      55.         4.         0.      0.002      0.100
 DATE OF MINIMUM       1980-05-12 1979-05-14 1979-05-14 1980-09-16 1980-11-05
 10TH PERCENTILE              55.                            0.002      0.100
 MEDIAN                       66.        50.        22.      0.002      0.370
 90TH PERCENTILE              82.                            0.006      0.870
 MAXIMUM                      91.       830.      5300.      0.007      3.850
 DATE OF MAXIMUM       1979-10-04 1979-08-02 1980-11-05 1979-04-02 1979-04-02
 STANDARD DEVIATION           13.       279.      1979.      0.002      1.117





 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  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1979-02-05 TO 1981-11-16

 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       16         16         12          1          4
 MEAN                        459.       11.5         7.      0.015      0.007
 MINIMUM                     323.        1.5         3.                 0.005
 DATE OF MINIMUM       1979-02-05 1979-02-05 1979-03-01            1979-06-11
 10TH PERCENTILE             330.        2.7         3.                      
 MEDIAN                      470.       12.5         6.                 0.007
 90TH PERCENTILE             542.       18.0        11.                      
 MAXIMUM                     580.       21.0        11.                 0.010
 DATE OF MAXIMUM       1979-11-29 1980-07-27 1981-02-23            1981-09-28
 STANDARD DEVIATION           74.        6.3         3.                 0.003




                           N KJEL      NO2-N      NO3-N        NH3    PERCENT
                                                                       DO SAT
                            07004      07207      07313      07555      08001
                           mg/L N     mg/L N     mg/L N     mg/L N    PERCENT


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        6         16         16         16         16
 MEAN                         3.2       0.18       2.63       0.93        67.
 MINIMUM                      1.8       0.03       1.40       0.10        29.
 DATE OF MINIMUM       1979-02-05 1980-07-27 1980-07-27 1980-07-27 1979-11-29
 10TH PERCENTILE                        0.04       1.52       0.23        31.
 MEDIAN                       3.0       0.12       2.30       0.84        74.
 90TH PERCENTILE                        0.30       3.58       1.44        88.
 MAXIMUM                      4.5       0.94       4.80       2.50        96.
 DATE OF MAXIMUM       1979-08-20 1979-11-29 1979-02-05 1979-11-29 1980-01-28
 STANDARD DEVIATION           1.1       0.22       0.89       0.55        21.




                               O2        BOD        COD          F         pH
                             DISS                             DISS           
                            08101      08201      08301      09105      10301
                          mg/L O2    mg/L O2    mg/L O2     mg/L F   pH UNITS


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       16         16         15         16         16
 MEAN                         7.4         6.        26.        0.3        7.4
 MINIMUM                      3.0         2.        18.        0.1        7.0
 DATE OF MINIMUM       1980-09-25 1979-08-20 1981-02-23 1979-03-01 1980-07-27
 10TH PERCENTILE              3.1         2.        18.        0.1        7.1
 MEDIAN                       7.2         6.        28.        0.2        7.2
 90TH PERCENTILE             11.4         8.        33.        0.3        7.8
 MAXIMUM                     12.3         8.        36.        1.5        8.3
 DATE OF MAXIMUM       1980-01-28 1980-01-28 1979-08-20 1979-02-05 1981-05-25
 STANDARD DEVIATION           3.2         2.         6.        0.3        0.3





                         SUSP SOL       TENS    P ORTHO    P ORTHO   SULPHATE
                          105 DEG    ANIONIC      TOTAL       DISS           
                            10401      10702      15205      15255      16301
                             mg/L       mg/L     mg/L P     mg/L P   mg/L SO4


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       16         16          6         16         16
 MEAN                         61.        0.1      0.525      0.509        47.
 MINIMUM                      10.        0.0      0.200      0.080        30.
 DATE OF MINIMUM       1981-02-23 1981-02-23 1979-02-05 1980-07-27 1981-05-25
 10TH PERCENTILE              10.        0.0                 0.128        32.
 MEDIAN                       40.        0.1      0.455      0.475        46.
 90TH PERCENTILE             160.        0.1                 0.822        57.
 MAXIMUM                     180.        0.2      0.950      1.200        70.
 DATE OF MAXIMUM       1979-06-11 1979-03-01 1980-05-29 1979-11-29 1979-11-29
 STANDARD DEVIATION           56.        0.1      0.299      0.298        10.




                               Cl         Cr         Mn         Fe         Ni
                             DISS      TOTAL      TOTAL      TOTAL      TOTAL
                            17204      24002      25004      26004      28001
                          mg/L Cl    mg/L Cr    mg/L Mn    mg/L Fe    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       16         14         16         16         14
 MEAN                         23.      0.005       0.12       0.58      0.008
 MINIMUM                      15.      0.001       0.00       0.26      0.003
 DATE OF MINIMUM       1981-11-16 1980-09-25 1980-11-26 1979-06-11 1981-09-28
 10TH PERCENTILE              16.      0.001       0.04       0.27      0.003
 MEDIAN                       21.      0.004       0.11       0.50      0.006
 90TH PERCENTILE              30.      0.010       0.16       0.95      0.015
 MAXIMUM                      40.      0.015       0.20       1.30      0.021
 DATE OF MAXIMUM       1979-11-29 1981-11-16 1979-02-05 1979-02-05 1980-11-26
 STANDARD DEVIATION            7.      0.004       0.05       0.29      0.005




                               Cu         Zn   COLIFORM   FAEC COL       FAEC
                            TOTAL      TOTAL      TOTAL                 STREP
                            29006      30004      36002      36012      36102
                          mg/L Cu    mg/L Zn   No/100ml   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       16         11         15         15         15
 MEAN                       0.026      0.085      3459.       259.        32.
 MINIMUM                    0.004      0.020         0.        27.         0.
 DATE OF MINIMUM       1981-07-23 1980-05-29 1979-03-01 1980-07-27 1979-06-11
 10TH PERCENTILE            0.004      0.020         5.        40.         4.
 MEDIAN                     0.014      0.050      2000.       150.        20.
 90TH PERCENTILE            0.029      0.163      7650.       500.        67.
 MAXIMUM                    0.208      0.300     11600.      1000.       107.
 DATE OF MAXIMUM       1981-02-23 1981-07-23 1981-04-13 1981-09-28 1980-11-26
 STANDARD DEVIATION         0.049      0.084      3604.       255.        29.




                               Cd         Ba         Pb
                            TOTAL      TOTAL      TOTAL
                            48001      80011      82001
                          mg/L Cd    ug/L Hg    mg/L Pb


 NO. OF L-FLAGGED VALUES        2          0          0
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES       11         12         15
 MEAN                       0.001      0.084      0.015
 MINIMUM                    0.000      0.030      0.003
 DATE OF MINIMUM       1979-06-11 1979-11-29 1981-11-16
 10TH PERCENTILE            0.000      0.030      0.004
 MEDIAN                     0.000      0.055      0.010
 90TH PERCENTILE            0.001      0.135      0.030
 MAXIMUM                    0.002      0.280      0.053
 DATE OF MAXIMUM       1979-02-05 1979-02-05 1979-11-29
 STANDARD DEVIATION         0.000      0.071      0.014





 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  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1979-01-31 TO 1981-11-09

 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         17          9          1          2
 MEAN                        379.       12.8        10.      0.005      0.005
 MINIMUM                     260.        3.0         2.                      
 DATE OF MINIMUM       1980-07-23 1979-01-31 1979-03-29                      
 10TH PERCENTILE             278.        3.7                                 
 MEDIAN                      370.       14.5         5.                      
 90TH PERCENTILE             446.       20.0                                 
 MAXIMUM                     510.       24.0        50.                      
 DATE OF MAXIMUM       1979-01-31 1981-08-05 1981-10-01                      
 STANDARD DEVIATION           62.        6.5        15.                      




                           N KJEL      NO2-N      NO3-N        NH3    PERCENT
                                                                       DO SAT
                            07004      07207      07313      07555      08001
                           mg/L N     mg/L N     mg/L N     mg/L N    PERCENT


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        4         11         17         17         10
 MEAN                         1.4       0.02       1.97       0.14       103.
 MINIMUM                      0.2       0.01       1.20       0.04        94.
 DATE OF MINIMUM       1979-03-29 1979-07-26 1981-10-01 1980-05-28 1979-03-29
 10TH PERCENTILE                        0.01       1.48       0.05        94.
 MEDIAN                       1.6       0.02       1.90       0.12       100.
 90TH PERCENTILE                        0.03       2.33       0.21       110.
 MAXIMUM                      2.0       0.03       2.90       0.38       124.
 DATE OF MAXIMUM       1979-01-31 1979-05-31 1980-01-24 1979-01-31 1981-06-10
 STANDARD DEVIATION           0.8       0.01       0.38       0.08         9.




                               O2        BOD        COD          F         pH
                             DISS                             DISS           
                            08101      08201      08301      09105      10301
                          mg/L O2    mg/L O2    mg/L O2     mg/L F   pH UNITS


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       16         17         16          9         17
 MEAN                        10.5         5.        17.        0.2        7.6
 MINIMUM                      8.7         2.         4.        0.1        7.1
 DATE OF MINIMUM       1980-07-23 1981-06-10 1980-03-24 1979-01-31 1979-03-29
 10TH PERCENTILE              8.7         3.         6.                   7.1
 MEDIAN                      10.2         4.        18.        0.1        7.5
 90TH PERCENTILE             12.5         7.        23.                   8.0
 MAXIMUM                     13.0         7.        27.        0.3        8.1
 DATE OF MAXIMUM       1980-01-24 1981-11-09 1980-07-23 1981-10-01 1981-02-04
 STANDARD DEVIATION           1.5         2.         6.        0.1        0.3






                         SUSP SOL       TENS    P ORTHO    P ORTHO   SULPHATE
                          105 DEG    ANIONIC      TOTAL       DISS           
                            10401      10702      15205      15255      16301
                             mg/L       mg/L     mg/L P     mg/L P   mg/L SO4


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        9         15          7         11         11
 MEAN                         43.        0.0      0.181      0.142        31.
 MINIMUM                      20.        0.0      0.080      0.070        18.
 DATE OF MINIMUM       1979-07-26 1979-03-29 1979-03-29 1979-03-29 1981-04-01
 10TH PERCENTILE                         0.0                 0.071        18.
 MEDIAN                       30.        0.0      0.180      0.150        29.
 90TH PERCENTILE                         0.1                 0.208        44.
 MAXIMUM                     110.        0.1      0.270      0.220        54.
 DATE OF MAXIMUM       1979-05-31 1981-08-05 1980-05-28 1979-09-27 1979-01-31
 STANDARD DEVIATION           30.        0.0      0.058      0.054        11.




                               Cl     ENDRIN         Cr         Mn         Fe
                             DISS                 TOTAL      TOTAL      TOTAL
                            17204      18140      24002      25004      26004
                          mg/L Cl       ug/L    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          1          9          8         11
 MEAN                         15.      0.001      0.003       0.06       0.40
 MINIMUM                      10.                 0.001       0.04       0.12
 DATE OF MINIMUM       1980-03-24            1981-11-09 1979-01-31 1979-07-26
 10TH PERCENTILE              10.                                        0.13
 MEDIAN                       13.                 0.003       0.05       0.36
 90TH PERCENTILE              23.                                        0.68
 MAXIMUM                      27.                 0.007       0.08       0.92
 DATE OF MAXIMUM       1979-09-27            1979-03-29 1981-10-01 1981-06-10
 STANDARD DEVIATION            5.                 0.002       0.02       0.23




                               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        9         11         10         11         17
 MEAN                       0.005      0.021      0.117      1156.        44.
 MINIMUM                    0.001      0.003      0.020        55.         4.
 DATE OF MINIMUM       1979-07-26 1981-02-04 1981-10-01 1979-01-31 1980-05-28
 10TH PERCENTILE                       0.003      0.020        56.         7.
 MEDIAN                     0.005      0.011      0.060       280.        33.
 90TH PERCENTILE                       0.022      0.170      1067.        87.
 MAXIMUM                    0.009      0.128      0.510      9000.       160.
 DATE OF MAXIMUM       1981-11-09 1981-04-01 1981-06-10 1981-10-01 1981-10-01
 STANDARD DEVIATION         0.003      0.036      0.146      2618.        39.




                             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          4          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0
 NO. OF UNFLAGGED VALUES       17         13         16         10
 MEAN                         18.      0.000      0.152      0.009
 MINIMUM                       0.      0.000      0.030      0.002
 DATE OF MINIMUM       1979-05-31 1979-05-31 1979-09-27 1979-09-27
 10TH PERCENTILE               0.      0.000      0.030      0.002
 MEDIAN                       10.      0.000      0.100      0.007
 90TH PERCENTILE              55.      0.001      0.218      0.015
 MAXIMUM                      67.      0.001      0.800      0.022
 DATE OF MAXIMUM       1981-02-04 1981-06-10 1979-05-31 1981-06-10
 STANDARD DEVIATION           23.      0.000      0.186      0.006





 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  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1979-01-10 TO 1981-12-15

 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       38         36         35          6         22
 MEAN                        432.       13.2         6.      0.006      0.058
 MINIMUM                     268.        3.0         2.      0.005      0.005
 DATE OF MINIMUM       1979-12-12 1979-01-10 1979-03-07 1979-03-07 1979-08-22
 10TH PERCENTILE             310.        4.3         2.                 0.005
 MEDIAN                      422.       12.0         5.      0.005      0.008
 90TH PERCENTILE             553.       20.0         8.                 0.029
 MAXIMUM                     730.       22.0        21.      0.010      1.000
 DATE OF MAXIMUM       1979-10-15 1979-06-27 1980-05-08 1981-04-07 1981-08-25
 STANDARD DEVIATION          110.        6.1         4.      0.002      0.211




                           N KJEL      NO2-N      NO3-N        NH3    PERCENT
                                                                       DO SAT
                            07004      07207      07313      07555      08001
                           mg/L N     mg/L N     mg/L N     mg/L N    PERCENT


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       15         37         38         38         36
 MEAN                         1.9       0.09       2.55       0.64        93.
 MINIMUM                      0.4       0.02       0.51       0.19        64.
 DATE OF MINIMUM       1979-04-04 1980-12-17 1979-01-10 1981-02-10 1981-09-22
 10TH PERCENTILE              0.8       0.03       2.00       0.28        80.
 MEDIAN                       1.8       0.07       2.65       0.52        94.
 90TH PERCENTILE              2.8       0.18       3.00       1.02       103.
 MAXIMUM                      3.7       0.23       3.50       1.90       105.
 DATE OF MAXIMUM       1979-08-22 1979-10-15 1979-03-07 1979-10-15 1981-02-10
 STANDARD DEVIATION           0.8       0.06       0.50       0.39         9.




                               O2        BOD        COD          F         pH
                             DISS                             DISS           
                            08101      08201      08301      09105      10301
                          mg/L O2    mg/L O2    mg/L O2     mg/L F   pH UNITS


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       36         37         37         38         38
 MEAN                         9.6         5.        25.        0.6        7.7
 MINIMUM                      5.6         2.         6.        0.2        7.2
 DATE OF MINIMUM       1981-09-22 1980-04-29 1981-02-10 1980-12-17 1981-06-02
 10TH PERCENTILE              7.4         3.        12.        0.2        7.6
 MEDIAN                       9.4         5.        21.        0.4        7.7
 90TH PERCENTILE             12.2         7.        38.        1.2        7.9
 MAXIMUM                     13.0         9.       109.        2.1        8.0
 DATE OF MAXIMUM       1981-01-13 1981-03-10 1979-12-12 1979-09-19 1980-02-13
 STANDARD DEVIATION           1.9         2.        17.        0.5        0.2




                         SUSP SOL       TENS    P ORTHO    P ORTHO   SULPHATE
                          105 DEG    ANIONIC      TOTAL       DISS           
                            10401      10702      15205      15255      16301
                             mg/L       mg/L     mg/L P     mg/L P   mg/L SO4


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       36         36         15         38         38
 MEAN                         93.        0.1      0.532      0.411        50.
 MINIMUM                       8.        0.0      0.200      0.080        20.
 DATE OF MINIMUM       1981-11-17 1980-07-30 1979-04-04 1981-02-10 1980-08-27
 10TH PERCENTILE              13.        0.0      0.205      0.148        28.
 MEDIAN                       65.        0.0      0.500      0.290        38.
 90TH PERCENTILE             167.        0.1      0.970      0.744        61.
 MAXIMUM                     600.        0.1      1.160      1.700       380.
 DATE OF MAXIMUM       1979-12-12 1980-02-13 1980-06-04 1979-09-19 1980-07-02
 STANDARD DEVIATION          112.        0.0      0.302      0.358        56.




                               Cl         Cr         Mn         Fe         Ni
                             DISS      TOTAL      TOTAL      TOTAL      TOTAL
                            17204      24002      25004      26004      28001
                          mg/L Cl    mg/L Cr    mg/L Mn    mg/L Fe    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       38         30         31         24         29
 MEAN                         41.      0.008       0.12       1.84      0.014
 MINIMUM                      13.      0.001       0.02       0.03      0.002
 DATE OF MINIMUM       1980-07-30 1979-03-07 1980-08-27 1979-11-14 1979-04-04
 10TH PERCENTILE              17.      0.001       0.03       0.05      0.002
 MEDIAN                       32.      0.004       0.09       0.96      0.004
 90TH PERCENTILE              62.      0.010       0.20       4.27      0.018
 MAXIMUM                     118.      0.076       0.45      12.10      0.215
 DATE OF MAXIMUM       1980-06-04 1981-06-30 1981-06-30 1981-06-30 1981-01-13
 STANDARD DEVIATION           24.      0.014       0.09       2.75      0.039




                               Cu         Zn   COLIFORM   FAEC COL       FAEC
                            TOTAL      TOTAL      TOTAL                 STREP
                            29006      30004      36002      36012      36102
                          mg/L Cu    mg/L Zn   No/100ml   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       38         35         34         35         35
 MEAN                       0.014      0.346      1123.       116.        39.
 MINIMUM                    0.004      0.030        65.         5.         0.
 DATE OF MINIMUM       1981-12-15 1980-02-13 1979-03-07 1980-03-12 1979-06-27
 10TH PERCENTILE            0.004      0.040       112.        18.         3.
 MEDIAN                     0.009      0.180       755.        90.        32.
 90TH PERCENTILE            0.030      0.825      2592.       230.        80.
 MAXIMUM                    0.055      1.460      5300.       500.       113.
 DATE OF MAXIMUM       1981-04-07 1981-07-27 1980-07-30 1980-07-30 1979-01-10
 STANDARD DEVIATION         0.012      0.383      1201.        99.        33.




                               Cd         Ba         Pb
                            TOTAL      TOTAL      TOTAL
                            48001      80011      82001
                          mg/L Cd    ug/L Hg    mg/L Pb


 NO. OF L-FLAGGED VALUES        6          0          0
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES       32         33         22
 MEAN                       0.002      0.805      0.017
 MINIMUM                    0.000      0.100      0.002
 DATE OF MINIMUM       1979-02-07 1979-10-15 1979-09-19
 10TH PERCENTILE            0.000      0.113      0.002
 MEDIAN                     0.001      0.290      0.009
 90TH PERCENTILE            0.003      1.446      0.041
 MAXIMUM                    0.014      7.700      0.085
 DATE OF MAXIMUM       1981-07-27 1981-10-20 1981-06-30
 STANDARD DEVIATION         0.002      1.455      0.022





 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  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1979-02-12 TO 1981-11-18

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP        TOC         CN     N KJEL
                             COND                                            
                            02041      02061      06001      06606      07004
                            us/cm      deg C     mg/L C    mg/L Cn     mg/L N


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       16         16         13          3          6
 MEAN                        125.        9.5         3.      0.007        1.4
 MINIMUM                     110.        3.0         1.                   1.2
 DATE OF MINIMUM       1980-08-05 1979-02-12 1980-08-13            1979-08-27
 10TH PERCENTILE             110.        3.0         1.                      
 MEDIAN                      125.        8.5         3.                   1.5
 90TH PERCENTILE             138.       15.2         5.                      
 MAXIMUM                     155.       16.0         9.                   1.6
 DATE OF MAXIMUM       1979-06-18 1980-08-05 1981-02-11            1979-06-18
 STANDARD DEVIATION           13.        5.0         2.                   0.2




                            NO2-N      NO3-N        NH3    PERCENT         O2
                                                            DO SAT       DISS
                            07207      07313      07555      08001      08101
                           mg/L N     mg/L N     mg/L N    PERCENT    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       14         16         16         16         16
 MEAN                        0.04       2.77       0.32        98.       10.9
 MINIMUM                     0.01       1.80       0.06        88.        8.8
 DATE OF MINIMUM       1979-02-12 1981-09-22 1979-03-12 1979-02-12 1981-09-22
 10TH PERCENTILE             0.01       1.98       0.07        89.        9.0
 MEDIAN                      0.03       2.70       0.23        96.       10.8
 90TH PERCENTILE             0.04       3.50       0.47       101.       12.6
 MAXIMUM                     0.19       3.70       1.60       126.       12.9
 DATE OF MAXIMUM       1980-02-09 1981-02-11 1980-02-09 1979-08-27 1979-08-27
 STANDARD DEVIATION          0.04       0.58       0.36         8.        1.3




                              BOD        COD          F         pH   SUSP SOL
                                                   DISS               105 DEG
                            08201      08301      09105      10301      10401
                          mg/L O2    mg/L O2     mg/L F   pH UNITS       mg/L


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       16         16          5         16         15
 MEAN                          4.        15.        0.1        7.0        59.
 MINIMUM                       0.         7.        0.1        6.3        10.
 DATE OF MINIMUM       1981-08-12 1980-08-13 1979-03-12 1980-12-18 1981-02-11
 10TH PERCENTILE               1.         8.                   6.4        15.
 MEDIAN                        4.        12.        0.1        7.1        40.
 90TH PERCENTILE               7.        24.                   7.5       105.
 MAXIMUM                       9.        44.        0.1        7.9       230.
 DATE OF MAXIMUM       1979-11-07 1979-11-07 1980-06-11 1980-08-13 1980-12-18
 STANDARD DEVIATION            2.         9.        0.0        0.4        57.




                             TENS    P ORTHO    P ORTHO   SULPHATE         Cl
                          ANIONIC      TOTAL       DISS                  DISS
                            10702      15205      15255      16301      17204
                             mg/L     mg/L P     mg/L P   mg/L SO4    mg/L Cl


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       15          5         16         16         16
 MEAN                         0.1      0.232      0.108        27.        15.
 MINIMUM                      0.0      0.100      0.010         2.         9.
 DATE OF MINIMUM       1981-09-22 1979-03-12 1979-06-18 1980-08-05 1979-11-07
 10TH PERCENTILE              0.0                 0.016         2.         9.
 MEDIAN                       0.0      0.200      0.085         8.        14.
 90TH PERCENTILE              0.1                 0.180        13.        19.
 MAXIMUM                      0.2      0.470      0.470       302.        41.
 DATE OF MAXIMUM       1980-06-11 1980-02-09 1980-02-09 1980-06-11 1980-02-09
 STANDARD DEVIATION           0.1      0.143      0.110        74.         8.




                          O,P-DDT         Cr         Mn         Fe         Ni
                                       TOTAL      TOTAL      TOTAL      TOTAL
                            18005      24002      25004      26004      28001
                             ug/L    mg/L Cr    mg/L Mn    mg/L Fe    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          5         12         16         14
 MEAN                       0.010      0.003       0.08       0.38      0.006
 MINIMUM                               0.001       0.03       0.05      0.002
 DATE OF MINIMUM                  1980-02-09 1981-04-23 1981-04-23 1979-08-27
 10TH PERCENTILE                                   0.03       0.08      0.002
 MEDIAN                                0.002       0.06       0.30      0.007
 90TH PERCENTILE                                   0.15       0.78      0.009
 MAXIMUM                               0.004       0.22       1.12      0.010
 DATE OF MAXIMUM                  1981-08-12 1979-11-07 1981-09-22 1981-09-22
 STANDARD DEVIATION                    0.001       0.06       0.31      0.003




                               Cu         Zn   COLIFORM   FAEC COL       FAEC
                            TOTAL      TOTAL      TOTAL                 STREP
                            29006      30004      36002      36012      36102
                          mg/L Cu    mg/L Zn   No/100ml   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       15          4         13         12         11
 MEAN                       0.013      0.085       644.       135.        35.
 MINIMUM                    0.003      0.020         9.         0.         0.
 DATE OF MINIMUM       1979-06-18 1980-02-09 1980-02-09 1980-12-18 1980-06-11
 10TH PERCENTILE            0.004                    9.         1.         0.
 MEDIAN                     0.007      0.080       100.        45.        20.
 90TH PERCENTILE            0.032                 1835.       210.        66.
 MAXIMUM                    0.059      0.160      4000.      1000.       200.
 DATE OF MAXIMUM       1980-12-18 1981-08-12 1980-12-18 1981-09-22 1979-11-07
 STANDARD DEVIATION         0.017      0.070      1186.       282.        58.




                               Cd         Ba         Pb
                            TOTAL      TOTAL      TOTAL
                            48001      80011      82001
                          mg/L Cd    ug/L Hg    mg/L Pb


 NO. OF L-FLAGGED VALUES        0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES       13         10         10
 MEAN                       0.001      0.106      0.006
 MINIMUM                    0.000      0.030      0.002
 DATE OF MINIMUM       1980-12-18 1981-11-18 1979-02-12
 10TH PERCENTILE            0.000      0.030      0.002
 MEDIAN                     0.000      0.095      0.004
 90TH PERCENTILE            0.001      0.140      0.008
 MAXIMUM                    0.001      0.290      0.018
 DATE OF MAXIMUM       1981-02-11 1981-04-23 1981-08-12
 STANDARD DEVIATION         0.000      0.071      0.005





 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  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1979-03-06 TO 1981-12-01

 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       26         26         15          8         16
 MEAN                       5909.       15.7        12.      0.015      0.031
 MINIMUM                    2730.        7.0         8.      0.005      0.005
 DATE OF MINIMUM       1981-01-20 1981-01-20 1979-03-06 1980-02-13 1979-08-08
 10TH PERCENTILE            3418.        8.0         8.                 0.005
 MEDIAN                     5710.       18.0        12.      0.012      0.020
 90TH PERCENTILE            8680.       22.2        17.                 0.081
 MAXIMUM                    9500.       23.0        18.      0.045      0.110
 DATE OF MAXIMUM       1979-11-14 1980-08-11 1981-05-11 1979-03-14 1981-06-02
 STANDARD DEVIATION         1887.        5.6         4.      0.013      0.032




                           N KJEL      NO2-N      NO3-N        NH3    PERCENT
                                                                       DO SAT
                            07004      07207      07313      07555      08001
                           mg/L N     mg/L N     mg/L N     mg/L N    PERCENT


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        9         25         25         25         26
 MEAN                        13.7       0.55       3.33       8.97        32.
 MINIMUM                      8.9       0.01       0.01       5.60         8.
 DATE OF MINIMUM       1980-04-24 1981-03-25 1979-11-14 1980-09-02 1979-11-14
 10TH PERCENTILE                        0.14       0.26       6.15        18.
 MEDIAN                      12.4       0.45       2.90       8.70        33.
 90TH PERCENTILE                        0.97       6.35      11.75        43.
 MAXIMUM                     22.7       1.10      10.20      13.40        67.
 DATE OF MAXIMUM       1979-03-06 1981-05-11 1981-07-17 1979-12-04 1981-09-21
 STANDARD DEVIATION           4.4       0.32       2.65       2.26        12.




                               O2        BOD        COD          F         pH
                             DISS                             DISS           
                            08101      08201      08301      09105      10301
                          mg/L O2    mg/L O2    mg/L O2     mg/L F   pH UNITS


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       26         26         23         19         26
 MEAN                         3.2         6.       143.        6.0        7.2
 MINIMUM                      0.8         2.        40.        3.8        6.8
 DATE OF MINIMUM       1979-11-14 1981-09-21 1980-08-11 1981-05-11 1979-06-05
 10TH PERCENTILE              1.6         2.        44.        3.9        6.9
 MEDIAN                       3.2         5.       124.        5.0        7.2
 90TH PERCENTILE              4.7        11.       241.        8.4        7.5
 MAXIMUM                      5.8        20.       460.        9.8        8.1
 DATE OF MAXIMUM       1981-09-21 1980-03-04 1979-11-14 1979-08-08 1979-09-12
 STANDARD DEVIATION           1.2         4.       101.        1.8        0.3




                         SUSP SOL       TENS    P ORTHO    P ORTHO   SULPHATE
                          105 DEG    ANIONIC      TOTAL       DISS           
                            10401      10702      15205      15255      16301
                             mg/L       mg/L     mg/L P     mg/L P   mg/L SO4


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       15         19          9         25         20
 MEAN                         49.        0.3      2.197      2.390       488.
 MINIMUM                      10.        0.2      1.400      1.200       246.
 DATE OF MINIMUM       1981-05-11 1981-09-21 1979-06-05 1979-06-05 1981-01-20
 10TH PERCENTILE              15.        0.2                 1.350       276.
 MEDIAN                       30.        0.2      1.800      2.100       414.
 90TH PERCENTILE             100.        0.3                 3.650       624.
 MAXIMUM                     170.        0.6      4.100      4.800      1470.
 DATE OF MAXIMUM       1979-06-05 1979-11-14 1979-09-04 1979-11-14 1980-08-11
 STANDARD DEVIATION           43.        0.1      0.944      0.963       258.




                               Cl    O,P-DDE         Cr         Mn         Fe
                             DISS                 TOTAL      TOTAL      TOTAL
                            17204      18025      24002      25004      26004
                          mg/L Cl       ug/L    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       25          1         18         18         17
 MEAN                       1985.      0.070      0.012       1.12       0.40
 MINIMUM                     720.                 0.002       0.07       0.12
 DATE OF MINIMUM       1981-01-20            1981-09-21 1981-01-20 1980-06-09
 10TH PERCENTILE             990.                 0.002       0.49       0.13
 MEDIAN                     1840.                 0.009       1.16       0.34
 90TH PERCENTILE            3130.                 0.019       1.66       0.71
 MAXIMUM                    3510.                 0.060       1.90       1.10
 DATE OF MAXIMUM       1979-12-04            1979-03-06 1979-11-14 1981-01-20
 STANDARD DEVIATION          788.                 0.013       0.44       0.27




                               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       18         18         15         10          9
 MEAN                       0.013      0.008      0.107       260.        23.
 MINIMUM                    0.004      0.004      0.030        10.         0.
 DATE OF MINIMUM       1979-08-08 1980-06-09 1980-08-11 1979-03-14 1979-03-14
 10TH PERCENTILE            0.005      0.004      0.035        10.           
 MEDIAN                     0.013      0.007      0.100       118.        11.
 90TH PERCENTILE            0.023      0.014      0.155       605.           
 MAXIMUM                    0.025      0.025      0.230      1300.        94.
 DATE OF MAXIMUM       1981-12-01 1981-12-01 1979-11-14 1980-06-09 1979-08-08
 STANDARD DEVIATION         0.006      0.005      0.053       403.        30.




                             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          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0
 NO. OF UNFLAGGED VALUES       10         18         15         17
 MEAN                         26.      0.001      0.226      0.010
 MINIMUM                       0.      0.000      0.030      0.002
 DATE OF MINIMUM       1979-05-16 1979-09-12 1979-11-14 1979-09-12
 10TH PERCENTILE               0.      0.000      0.030      0.003
 MEDIAN                        1.      0.001      0.100      0.009
 90TH PERCENTILE              10.      0.001      0.425      0.016
 MAXIMUM                     240.      0.002      1.370      0.030
 DATE OF MAXIMUM       1981-03-25 1979-06-05 1979-03-14 1980-02-13
 STANDARD DEVIATION           75.      0.000      0.345      0.007





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GEMS/WATER
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Last updated: 2001-07-30