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STATISTICS FOR BELGIUM

STATISTICS FOR BELGIUM


1GEMS/WATER - STATISTICAL SUMMARY BY STATION     2002-01-24   PAGE  14

 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  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1991-03-14 TO 1992-12-02

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP          B   ORG CARB   ORG CARB
                             COND                  DISS       PART       DISS
                            02041      02061      05101      06076      06101
                            us/cm      deg C     mg/L B     ug/g C     mg/L C


 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         12          7         22
 MEAN                        942.       13.1        0.3    1.1E+05        7.3
 MINIMUM                     744.        5.5        0.2    9.1E+04        1.6
 DATE OF MINIMUM       1992-08-31 1991-12-04 1992-03-25 1991-05-17 1991-07-19
 10TH PERCENTILE             826.        5.5        0.2                   4.9
 MEDIAN                      950.       12.5        0.3    1.0E+05        7.5
 90TH PERCENTILE            1021.       20.0        0.4                   9.1
 MAXIMUM                    1135.       23.0        0.6    1.4E+05        9.5
 DATE OF MAXIMUM       1991-09-20 1991-08-08 1992-05-13 1991-03-14 1992-11-19
 STANDARD DEVIATION           86.        5.7        0.1    2.3E+04        1.8




                              PAH         CN   CHLORO A     N KJEL     NO3NO2
                                                                             
                            06505      06606      06711      07004      07105
                             ug/L    mg/L Cn       mg/L     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        0          6          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       20          6         20         12         10
 MEAN                        0.23      0.014     0.0213       14.1       3.90
 MINIMUM                     0.06      0.005     0.0018        2.4       1.62
 DATE OF MINIMUM       1992-01-15 1992-05-13 1992-12-02 1992-01-15 1991-07-19
 10TH PERCENTILE             0.08      0.005     0.0029        2.9       1.62
 MEDIAN                      0.19      0.007     0.0129       14.3       3.60
 90TH PERCENTILE             0.28      0.025     0.0415       21.1       6.36
 MAXIMUM                     1.06      0.045     0.0608       23.2       7.11
 DATE OF MAXIMUM       1992-02-27 1992-02-27 1991-05-17 1992-10-22 1991-03-14
 STANDARD DEVIATION          0.21      0.013     0.0187        6.5       1.79




                            NO2-N      NO3-N     ORG. N        NH3    PERCENT
                                                   DISS                DO SAT
                            07207      07313      07401      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       12         12          7         22          9
 MEAN                        0.26       4.24       14.9       9.22        30.
 MINIMUM                     0.18       2.30        8.4       2.59        12.
 DATE OF MINIMUM       1992-01-15 1992-06-03 1991-03-14 1992-12-02 1991-06-13
 10TH PERCENTILE             0.18       2.46                  3.96           
 MEDIAN                      0.25       4.05       12.4       8.49        28.
 90TH PERCENTILE             0.35       5.50                 11.80           
 MAXIMUM                     0.46       6.50       31.8      25.70        60.
 DATE OF MAXIMUM       1992-07-16 1992-03-25 1991-09-20 1991-09-20 1991-05-17
 STANDARD DEVIATION          0.09       1.25        7.9       4.77        14.



                               O2        BOD        COD          F        ALK
                             DISS                             DISS      TOTAL
                            08101      08201      08301      09105      10101
                          mg/L O2    mg/L O2    mg/L O2     mg/L F       mg/L


 NO. OF L-FLAGGED VALUES        0          0          0          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       21         14         19          3         10
 MEAN                         3.7         4.        56.        0.4     277.80
 MINIMUM                      0.4         2.        28.        0.1     250.40
 DATE OF MINIMUM       1992-06-03 1991-09-20 1992-03-25 1992-03-25 1991-03-14
 10TH PERCENTILE              1.2         2.        35.                250.40
 MEDIAN                       3.8         4.        57.        0.5     278.10
 90TH PERCENTILE              5.8         6.        72.                310.00
 MAXIMUM                      6.1         7.        80.        0.6     310.50
 DATE OF MAXIMUM       1992-02-27 1991-08-08 1991-12-04 1991-03-14 1991-09-20
 STANDARD DEVIATION           1.7         1.        14.        0.2      23.83




                               pH   SUSP SOL          P    P TOTAL   SULPHATE
                                     105 DEG      TOTAL       PART           
                            10302      10401      15405      15903      16309
                         pH UNITS       mg/L     mg/L P     ug/g 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       22         22         21          2         21
 MEAN                         7.6        16.      0.983    723.875       130.
 MINIMUM                      7.4         7.      0.480                   93.
 DATE OF MINIMUM       1992-07-16 1991-04-24 1992-08-31            1992-08-31
 10TH PERCENTILE              7.5         7.      0.631                   98.
 MEDIAN                       7.6        13.      0.990                  131.
 90TH PERCENTILE              7.7        25.      1.378                  155.
 MAXIMUM                      7.7        47.      1.570                  159.
 DATE OF MAXIMUM       1991-09-20 1991-05-17 1991-12-04            1991-09-20
 STANDARD DEVIATION           0.1         9.      0.291                   21.




                               Cl    P,P-DDT        DDT    O,P-DDT    P,P-DDD
                             DISS                 TOTAL                      
                            17203      18000      18002      18005      18010
                          mg/L Cl       ug/L       ug/L       ug/L       ug/L


 NO. OF L-FLAGGED VALUES        0         12          8         12         12
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22          0          2          0          0
 MEAN                         68.      0.001      0.002      0.001      0.001
 MINIMUM                      44.      0.001      0.001      0.001      0.001
 DATE OF MINIMUM       1991-09-20 1992-01-15 1991-03-14 1992-01-15 1992-01-15
 10TH PERCENTILE              46.      0.001      0.001      0.001      0.001
 MEDIAN                       70.      0.001      0.001      0.001      0.001
 90TH PERCENTILE              82.      0.001      0.003      0.001      0.001
 MAXIMUM                      85.      0.001      0.004      0.001      0.001
 DATE OF MAXIMUM       1992-01-15 1992-12-02 1991-12-04 1992-12-02 1992-12-02
 STANDARD DEVIATION           13.      0.000      0.001      0.000      0.000



                          O,P-DDD    P,P-DDE    O,P-DDE    LINDANE     ALDRIN
                                                                             
                            18015      18020      18025      18070      18130
                             ug/L       ug/L       ug/L       ug/L       ug/L


 NO. OF L-FLAGGED VALUES        9         12         10          0         18
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        3          0          2          8          4
 MEAN                       0.001      0.001      0.001      0.059      0.001
 MINIMUM                    0.001      0.001      0.001      0.010      0.001
 DATE OF MINIMUM       1992-01-15 1992-01-15 1992-01-15 1991-05-17 1991-03-14
 10TH PERCENTILE            0.001      0.001      0.001                 0.001
 MEDIAN                     0.001      0.001      0.001      0.037      0.001
 90TH PERCENTILE            0.001      0.001      0.001                 0.001
 MAXIMUM                    0.001      0.001      0.001      0.208      0.003
 DATE OF MAXIMUM       1992-12-02 1992-12-02 1992-12-02 1991-04-24 1992-05-13
 STANDARD DEVIATION         0.000      0.000      0.000      0.063      0.000




                           ENDRIN   DIELDRIN       PCBS   ATRAZINE         Cr
                                                                        TOTAL
                            18140      18150      18165      18415      24002
                             ug/L       ug/L       ug/L       ug/L    mg/L Cr


 NO. OF L-FLAGGED VALUES       12         18          2          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          3          8         21         22
 MEAN                       0.001      0.001      0.003        1.0      0.017
 MINIMUM                    0.001      0.001      0.001        0.1      0.005
 DATE OF MINIMUM       1992-01-15 1991-04-24 1991-08-08 1991-11-25 1992-08-31
 10TH PERCENTILE            0.001      0.001      0.001        0.1      0.006
 MEDIAN                     0.001      0.001      0.002        0.5      0.016
 90TH PERCENTILE            0.001      0.001      0.005        2.1      0.034
 MAXIMUM                    0.001      0.003      0.005        5.4      0.044
 DATE OF MAXIMUM       1992-12-02 1991-03-14 1991-07-19 1992-06-03 1992-09-15
 STANDARD DEVIATION         0.000      0.000      0.001        1.2      0.011




                               Cr         Mn         Mn         Fe         Fe
                             PART       DISS       PART       DISS       PART
                            24202      25104      25204      26104      26204
                          ug/g Cr    mg/L Mn    ug/g Mn    mg/L Fe    ug/g 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        2         22          2         22          2
 MEAN                      86.650       0.80     59.170       0.64      1.194
 MINIMUM                                0.10                  0.41           
 DATE OF MINIMUM                  1992-08-31            1992-07-16           
 10TH PERCENTILE                        0.24                  0.43           
 MEDIAN                                 0.63                  0.55           
 90TH PERCENTILE                        1.50                  0.88           
 MAXIMUM                                3.08                  1.50           
 DATE OF MAXIMUM                  1991-04-24            1992-04-10           
 STANDARD DEVIATION                     0.69                  0.26           




                               Ni         Cu         Cu         Zn         ZN
                            TOTAL      TOTAL       PART       DISS       PART
                            28001      29006      29206      30104      30204
                          mg/L Ni    mg/L Cu    ug/g Cu    mg/L Zn    ug/g 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       22         20          2         22          2
 MEAN                       0.009      0.043     73.650      0.072     25.860
 MINIMUM                    0.004      0.018                 0.036           
 DATE OF MINIMUM       1992-06-03 1992-12-02            1992-06-03           
 10TH PERCENTILE            0.005      0.020                 0.049           
 MEDIAN                     0.008      0.028                 0.066           
 90TH PERCENTILE            0.012      0.080                 0.105           
 MAXIMUM                    0.018      0.090                 0.115           
 DATE OF MAXIMUM       1991-04-24 1991-12-04            1991-05-17           
 STANDARD DEVIATION         0.003      0.025                 0.022           




                               As         As   COLIFORM   FAEC COL       FAEC
                             DISS       PART      TOTAL                 STREP
                            33104      33202      36002      36012      36102
                          mg/L As    ug/g As   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       22          2         21         21         12
 MEAN                       0.003     20.400    5.4E+05    2.3E+04       537.
 MINIMUM                    0.002               2.0E+03    1.0E+01         2.
 DATE OF MINIMUM       1991-04-24            1992-12-02 1991-12-04 1992-05-13
 10TH PERCENTILE            0.002               6.4E+03    6.4E+01        12.
 MEDIAN                     0.003               6.8E+04    1.5E+03       345.
 90TH PERCENTILE            0.004               7.5E+05    1.3E+04      1110.
 MAXIMUM                    0.007               7.7E+06    2.4E+05      1500.
 DATE OF MAXIMUM       1991-08-08            1992-09-15 1992-09-15 1992-08-31
 STANDARD DEVIATION         0.001               1.6E+06    6.3E+04       517.




                               Cd         Cd         Ba         Hg         Pb
                            TOTAL       PART      TOTAL       PART      TOTAL
                            48001      48201      80011      80201      82001
                          mg/L Cd    ug/g Cd    ug/L Hg    ug/g Hg    mg/L Pb


 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          2         22          2         22
 MEAN                       0.001      6.325      0.211      1.194      0.009
 MINIMUM                    0.000                 0.000                 0.003
 DATE OF MINIMUM       1992-09-15            1991-03-14            1991-03-14
 10TH PERCENTILE            0.000                 0.000                 0.003
 MEDIAN                     0.001                 0.100                 0.009
 90TH PERCENTILE            0.001                 0.360                 0.013
 MAXIMUM                    0.002                 2.730                 0.016
 DATE OF MAXIMUM       1992-04-10            1992-03-25            1991-12-04
 STANDARD DEVIATION         0.000                 0.578                 0.004




                               Pb    PHENOLS    BENZENE       INST
                             PART                           DISCHG
                            82201      95011      95100      97160
                          ug/g Pb       ug/L       ug/L       m3/S


 NO. OF L-FLAGGED VALUES        0         22         21          0
 NO. OF G-FLAGGED VALUES        0          0          0          0
 NO. OF UNFLAGGED VALUES        2          1          0         12
 MEAN                      39.255        5.2        0.1       22.6
 MINIMUM                                 0.0        0.1        7.1
 DATE OF MINIMUM                  1992-09-15 1991-03-14 1992-10-22
 10TH PERCENTILE                         5.0        0.1        8.0
 MEDIAN                                  5.0        0.1       13.3
 90TH PERCENTILE                         5.0        0.1       31.9
 MAXIMUM                                15.0        0.1       81.9
 DATE OF MAXIMUM                  1991-04-24 1992-12-02 1992-06-03
 STANDARD DEVIATION                      2.4        0.0       20.4





 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  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1991-03-20 TO 1992-12-03

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP          B   ORG CARB        PAH
                             COND                  DISS       DISS           
                            02041      02061      05101      06101      06505
                            us/cm      deg C     mg/L B     mg/L C       ug/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       22         22         10         21         15
 MEAN                       1167.       14.0        0.4       10.5       0.16
 MINIMUM                     700.        5.0        0.2        5.4       0.06
 DATE OF MINIMUM       1991-11-22 1991-11-22 1992-12-03 1992-03-25 1992-07-17
 10TH PERCENTILE            1015.        6.1        0.2        6.5       0.06
 MEDIAN                     1174.       12.2        0.4        9.5       0.15
 90TH PERCENTILE            1331.       22.1        0.6       12.9       0.25
 MAXIMUM                    1538.       25.5        0.6       27.3       0.33
 DATE OF MAXIMUM       1991-09-21 1992-06-29 1992-09-15 1991-09-21 1991-03-20
 STANDARD DEVIATION          158.        6.1        0.1        4.5       0.08




                               CN   CHLORO A     N KJEL     NO3NO2      NO2-N
                                                                             
                            06606      06711      07004      07105      07207
                          mg/L Cn       mg/L     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       10         22         12         10         12
 MEAN                       0.009     0.0463       16.2       3.63       0.53
 MINIMUM                    0.005     0.0010        6.9       0.08       0.12
 DATE OF MINIMUM       1992-03-25 1992-01-15 1992-03-25 1991-09-21 1992-07-17
 10TH PERCENTILE            0.005     0.0011        7.1       0.08       0.15
 MEDIAN                     0.009     0.0184       14.4       2.17       0.41
 90TH PERCENTILE            0.012     0.0958       27.8       7.87       0.74
 MAXIMUM                    0.015     0.2605       30.6      10.66       1.60
 DATE OF MAXIMUM       1992-10-23 1992-06-29 1992-09-15 1991-11-22 1992-02-28
 STANDARD DEVIATION         0.003     0.0660        8.4       3.86       0.38




                            NO3-N     ORG. N        NH3    PERCENT         O2
                                        DISS                DO SAT       DISS
                            07313      07401      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       12          8         22         10         22
 MEAN                        4.06       11.7      10.51        14.        3.5
 MINIMUM                     0.30        5.2       1.90         0.        0.0
 DATE OF MINIMUM       1992-07-17 1991-11-22 1991-11-22 1991-04-24 1991-04-24
 10TH PERCENTILE             0.35                  4.81         0.        0.0
 MEDIAN                      3.80       12.0       9.25         9.        3.0
 90TH PERCENTILE             7.96                 14.68        22.        7.2
 MAXIMUM                     8.70       16.5      29.06        69.       13.5
 DATE OF MAXIMUM       1992-01-15 1991-09-21 1992-09-15 1991-05-16 1992-06-29
 STANDARD DEVIATION          2.80        3.3       6.67        21.        3.5




                              BOD        COD          F        ALK         pH
                                                   DISS      TOTAL           
                            08201      08301      09105      10101      10302
                          mg/L O2    mg/L O2     mg/L F       mg/L   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       22         22          3         10         22
 MEAN                          6.        73.        1.5     324.98        7.7
 MINIMUM                       2.        42.                167.10        7.4
 DATE OF MINIMUM       1992-11-18 1992-03-25            1991-11-22 1992-02-28
 10TH PERCENTILE               3.        43.                167.10        7.5
 MEDIAN                        6.        70.                335.75        7.7
 90TH PERCENTILE              10.       101.                361.50        7.9
 MAXIMUM                      16.       169.                440.80        8.1
 DATE OF MAXIMUM       1991-09-21 1991-09-21            1991-09-21 1992-06-29
 STANDARD DEVIATION            3.        29.                 70.18        0.2




                         SUSP SOL          P   SULPHATE         Cl    P,P-DDT
                          105 DEG      TOTAL                  DISS           
                            10401      15405      16309      17203      18000
                             mg/L     mg/L P   mg/L SO4    mg/L Cl       ug/L


 NO. OF L-FLAGGED VALUES        0          0          0          0         10
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         21         21         22          2
 MEAN                         22.      2.530       126.       119.      0.001
 MINIMUM                       3.      0.980        83.        46.      0.001
 DATE OF MINIMUM       1992-01-15 1991-11-22 1992-05-13 1992-02-28 1992-01-15
 10TH PERCENTILE               3.      1.138        85.        58.      0.001
 MEDIAN                       15.      2.020       129.       116.      0.001
 90TH PERCENTILE              41.      3.457       154.       154.      0.001
 MAXIMUM                     111.      9.600       167.       210.      0.003
 DATE OF MAXIMUM       1991-11-22 1991-09-21 1992-02-28 1991-09-21 1992-10-23
 STANDARD DEVIATION           25.      1.781        23.        37.      0.001




                              DDT    O,P-DDT    P,P-DDD    O,P-DDD    P,P-DDE
                            TOTAL                                            
                            18002      18005      18010      18015      18020
                             ug/L       ug/L       ug/L       ug/L       ug/L


 NO. OF L-FLAGGED VALUES        7         11         12          7         11
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1          1          0          5          1
 MEAN                       0.002      0.001      0.001      0.001      0.001
 MINIMUM                    0.001      0.001      0.001      0.001      0.001
 DATE OF MINIMUM       1991-03-20 1992-01-15 1992-01-15 1992-01-15 1992-01-15
 10TH PERCENTILE                       0.001      0.001      0.001      0.001
 MEDIAN                     0.001      0.001      0.001      0.001      0.001
 90TH PERCENTILE                       0.001      0.001      0.002      0.001
 MAXIMUM                    0.009      0.001      0.001      0.003      0.001
 DATE OF MAXIMUM       1991-09-21 1992-12-03 1992-12-03 1992-10-23 1992-12-03
 STANDARD DEVIATION         0.003      0.000      0.000      0.001      0.000



                          O,P-DDE    LINDANE     ALDRIN     ENDRIN   DIELDRIN
                                                                             
                            18025      18070      18130      18140      18150
                             ug/L       ug/L       ug/L       ug/L       ug/L


 NO. OF L-FLAGGED VALUES       12          0         13         11         17
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0         10          7          1          3
 MEAN                       0.001      0.043      0.002      0.001      0.001
 MINIMUM                    0.001      0.018      0.001      0.001      0.001
 DATE OF MINIMUM       1992-01-15 1991-12-05 1991-07-22 1992-01-15 1991-03-20
 10TH PERCENTILE            0.001      0.018      0.001      0.001      0.001
 MEDIAN                     0.001      0.028      0.001      0.001      0.001
 90TH PERCENTILE            0.001      0.088      0.004      0.001      0.001
 MAXIMUM                    0.001      0.095      0.004      0.001      0.003
 DATE OF MAXIMUM       1992-12-03 1991-04-24 1991-04-24 1992-12-03 1991-11-22
 STANDARD DEVIATION         0.000      0.028      0.001      0.000      0.000




                             PCBS   ATRAZINE         Cr         Mn         Fe
                                                  TOTAL       DISS       DISS
                            18165      18415      24002      25104      26104
                             ug/L       ug/L    mg/L Cr    mg/L Mn    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          0          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        8         20         22         21         22
 MEAN                       0.007        0.7      0.012       0.12       0.47
 MINIMUM                    0.001        0.1      0.003       0.01       0.26
 DATE OF MINIMUM       1991-05-16 1992-10-23 1991-08-08 1992-04-16 1992-06-29
 10TH PERCENTILE                         0.2      0.004       0.03       0.27
 MEDIAN                     0.009        0.4      0.011       0.12       0.41
 90TH PERCENTILE                         1.3      0.016       0.18       0.62
 MAXIMUM                    0.013        3.2      0.031       0.20       1.07
 DATE OF MAXIMUM       1991-07-22 1991-04-24 1991-03-20 1991-07-22 1992-12-03
 STANDARD DEVIATION         0.004        0.8      0.006       0.05       0.21




                               Ni         Cu         Zn         As   COLIFORM
                            TOTAL      TOTAL       DISS       DISS      TOTAL
                            28001      29006      30104      33104      36002
                          mg/L Ni    mg/L Cu    mg/L Zn    mg/L As   No/100ml


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          6
 NO. OF UNFLAGGED VALUES       22         21         22         22         14
 MEAN                       0.015      0.024      0.095      0.005    6.5E+05
 MINIMUM                    0.006      0.007      0.037      0.003    3.0E+04
 DATE OF MINIMUM       1992-12-03 1991-05-16 1991-07-22 1991-05-16 1991-05-16
 10TH PERCENTILE            0.007      0.007      0.040      0.003    4.5E+04
 MEDIAN                     0.013      0.014      0.075      0.005    7.8E+05
 90TH PERCENTILE            0.025      0.032      0.146      0.007    1.0E+06
 MAXIMUM                    0.036      0.182      0.326      0.009    1.8E+06
 DATE OF MAXIMUM       1991-05-16 1991-12-05 1991-10-24 1991-08-08 1992-01-15
 STANDARD DEVIATION         0.007      0.038      0.063      0.002    5.2E+05




                         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          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       19         10         22         22         22
 MEAN                     8.7E+04      4336.      0.001      0.196      0.011
 MINIMUM                  2.0E+03        15.      0.000      0.000      0.004
 DATE OF MINIMUM       1992-11-18 1992-08-04 1992-10-23 1991-03-20 1992-03-25
 10TH PERCENTILE          2.9E+03        15.      0.000      0.000      0.004
 MEDIAN                   3.0E+04      1380.      0.001      0.100      0.009
 90TH PERCENTILE          2.5E+05     12000.      0.001      0.300      0.017
 MAXIMUM                  4.1E+05     23000.      0.004      2.400      0.042
 DATE OF MAXIMUM       1991-10-24 1992-01-15 1991-11-22 1992-10-23 1992-02-28
 STANDARD DEVIATION       1.2E+05      7448.      0.001      0.504      0.008




                          PHENOLS    BENZENE       INST
                                                 DISCHG
                            95011      95100      97160
                             ug/L       ug/L       m3/S


 NO. OF L-FLAGGED VALUES       12         18          0
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES       10          4         12
 MEAN                         6.4        0.2       20.3
 MINIMUM                      5.0        0.1        0.0
 DATE OF MINIMUM       1991-04-24 1991-03-20 1992-06-29
 10TH PERCENTILE              5.0        0.1        0.0
 MEDIAN                       5.0        0.1       13.5
 90TH PERCENTILE              8.8        0.3       32.8
 MAXIMUM                     15.0        1.2       81.6
 DATE OF MAXIMUM       1991-09-21 1992-11-18 1992-12-03
 STANDARD DEVIATION           3.0        0.3       22.3





 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  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1991-03-21 TO 1992-12-04

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP          B   ORG CARB        PAH
                             COND                  DISS       DISS           
                            02041      02061      05101      06101      06505
                            us/cm      deg C     mg/L B     mg/L C       ug/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       22         22         10         22         13
 MEAN                       1708.       16.0        0.8       86.2       0.78
 MINIMUM                    1033.        9.5        0.3       14.7       0.13
 DATE OF MINIMUM       1992-12-04 1992-12-04 1992-12-04 1991-07-22 1992-02-05
 10TH PERCENTILE            1181.       11.6        0.3       29.3       0.18
 MEDIAN                     1784.       16.2        0.8       89.1       0.52
 90TH PERCENTILE            2064.       20.8        1.3      139.5       1.67
 MAXIMUM                    2130.       21.0        1.3      159.2       1.99
 DATE OF MAXIMUM       1991-09-11 1992-08-04 1992-08-04 1991-05-24 1992-04-16
 STANDARD DEVIATION          310.        3.5        0.4       41.5       0.59




                               CN   CHLORO A     N KJEL     NO3NO2      NO2-N
                                                                             
                            06606      06711      07004      07105      07207
                          mg/L Cn       mg/L     mg/L N     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        0          0          0          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       12          3         12          9         12
 MEAN                       0.043     0.0098       54.2       1.09       0.29
 MINIMUM                    0.006                  12.3       0.01       0.02
 DATE OF MINIMUM       1992-12-04            1992-12-04 1991-07-22 1992-06-29
 10TH PERCENTILE            0.010                  14.1       0.01       0.02
 MEDIAN                     0.041                  51.2       0.20       0.09
 90TH PERCENTILE            0.071                  99.4       0.94       0.35
 MAXIMUM                    0.098                 111.5       8.52       2.20
 DATE OF MAXIMUM       1992-09-28            1992-06-29 1991-11-22 1992-02-05
 STANDARD DEVIATION         0.025                  33.5       2.63       0.61




                            NO3-N     ORG. N        NH3    PERCENT         O2
                                        DISS                DO SAT       DISS
                            07313      07401      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       12          5         22         10         22
 MEAN                        1.00       33.4      23.62         0.        0.5
 MINIMUM                     0.01       11.6       4.19         0.        0.0
 DATE OF MINIMUM       1992-05-13 1991-03-21 1992-12-04 1991-03-21 1991-03-21
 10TH PERCENTILE             0.02                  9.92         0.        0.0
 MEDIAN                      0.44       34.0      25.63         0.        0.0
 90TH PERCENTILE             1.54                 33.15         0.        1.2
 MAXIMUM                     6.20       57.5      36.70         2.        6.5
 DATE OF MAXIMUM       1992-12-04 1991-12-11 1991-09-11 1991-11-22 1992-12-04
 STANDARD DEVIATION          1.72       17.0       8.69         1.        1.4




                              BOD        COD          F        ALK         pH
                                                   DISS      TOTAL           
                            08201      08301      09105      10101      10302
                          mg/L O2    mg/L O2     mg/L F       mg/L   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       22         22          3         10         22
 MEAN                        138.       687.        4.6     470.87        7.3
 MINIMUM                      31.       250.                274.70        7.0
 DATE OF MINIMUM       1992-12-04 1992-12-04            1991-03-21 1991-12-11
 10TH PERCENTILE              40.       306.                274.70        7.0
 MEDIAN                      103.       654.                490.20        7.3
 90TH PERCENTILE             264.      1091.                532.00        7.5
 MAXIMUM                     344.      1503.                561.30        7.7
 DATE OF MAXIMUM       1991-12-11 1992-06-29            1991-09-11 1991-07-22
 STANDARD DEVIATION           93.       330.                 81.66        0.2




                         SUSP SOL          P   SULPHATE         Cl    P,P-DDT
                          105 DEG      TOTAL                  DISS           
                            10401      15405      16309      17203      18000
                             mg/L     mg/L P   mg/L SO4    mg/L Cl       ug/L


 NO. OF L-FLAGGED VALUES        0          0          0          0          6
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       10         20         21         22          6
 MEAN                        159.      7.144       190.       179.      0.024
 MINIMUM                      22.      1.800        20.        99.      0.001
 DATE OF MINIMUM       1991-07-22 1992-12-04 1992-10-23 1992-12-04 1992-12-04
 10TH PERCENTILE              22.      2.000        67.       110.      0.002
 MEDIAN                      166.      7.635       201.       164.      0.010
 90TH PERCENTILE             251.     11.400       259.       262.      0.062
 MAXIMUM                     297.     12.760       340.       296.      0.076
 DATE OF MAXIMUM       1991-06-19 1992-08-04 1992-05-13 1992-01-15 1992-03-25
 STANDARD DEVIATION           92.      3.470        75.        54.      0.026




                              DDT    O,P-DDT    P,P-DDD    O,P-DDD    P,P-DDE
                            TOTAL                                            
                            18002      18005      18010      18015      18020
                             ug/L       ug/L       ug/L       ug/L       ug/L


 NO. OF L-FLAGGED VALUES        4          1          7          5          9
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        5          0          4          7          3
 MEAN                       0.014      0.010      0.010      0.014      0.009
 MINIMUM                    0.001                 0.001      0.004      0.001
 DATE OF MINIMUM       1991-08-08            1992-12-04 1992-12-04 1992-12-04
 10TH PERCENTILE                                  0.001      0.004      0.002
 MEDIAN                     0.010                 0.010      0.010      0.010
 90TH PERCENTILE                                  0.013      0.020      0.011
 MAXIMUM                    0.066                 0.031      0.050      0.016
 DATE OF MAXIMUM       1991-04-24            1992-10-23 1992-11-18 1992-07-17
 STANDARD DEVIATION         0.020                 0.008      0.012      0.004




                          O,P-DDE    LINDANE     ALDRIN     ENDRIN   DIELDRIN
                                                                             
                            18025      18070      18130      18140      18150
                             ug/L       ug/L       ug/L       ug/L       ug/L


 NO. OF L-FLAGGED VALUES        2          0         11          5         15
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       10          7         10          0          4
 MEAN                       0.017      0.780      0.013      0.008      0.008
 MINIMUM                    0.004      0.241      0.001      0.001      0.001
 DATE OF MINIMUM       1992-12-04 1991-07-22 1991-08-08 1992-03-25 1992-12-04
 10TH PERCENTILE            0.005                 0.001                 0.002
 MEDIAN                     0.015      0.545      0.010      0.010      0.010
 90TH PERCENTILE            0.028                 0.021                 0.010
 MAXIMUM                    0.032      2.029      0.050      0.010      0.010
 DATE OF MAXIMUM       1992-10-23 1991-05-24 1991-04-24 1992-02-05 1991-06-19
 STANDARD DEVIATION         0.008      0.686      0.012      0.004      0.003




                             PCBS         Cr         Mn         Fe         Ni
                                       TOTAL       DISS       DISS      TOTAL
                            18165      24002      25104      26104      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        9         21         22         22         21
 MEAN                       0.049      0.387       0.20       1.31      0.012
 MINIMUM                    0.022      0.004       0.01       0.35      0.004
 DATE OF MINIMUM       1991-11-22 1992-05-13 1991-05-24 1992-08-04 1992-09-28
 10TH PERCENTILE                       0.153       0.11       0.51      0.006
 MEDIAN                     0.037      0.418       0.19       1.09      0.010
 90TH PERCENTILE                       0.564       0.27       2.25      0.017
 MAXIMUM                    0.101      0.590       0.40       3.56      0.028
 DATE OF MAXIMUM       1991-06-19 1992-09-28 1991-06-19 1992-01-15 1991-08-08
 STANDARD DEVIATION         0.028      0.152       0.08       0.81      0.006




                               Cu         Zn         As   COLIFORM   FAEC COL
                            TOTAL       DISS       DISS      TOTAL           
                            29006      30104      33104      36002      36012
                          mg/L Cu    mg/L Zn    mg/L As   No/100ml   No/100ml


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0         10          8
 NO. OF UNFLAGGED VALUES       21         22         22         11         12
 MEAN                       0.061      0.290      0.004    1.9E+07    3.0E+06
 MINIMUM                    0.031      0.059      0.002    1.0E+05    1.2E+04
 DATE OF MINIMUM       1991-07-22 1991-11-22 1991-12-11 1992-06-29 1992-06-29
 10TH PERCENTILE            0.035      0.100      0.002    1.0E+06    7.0E+04
 MEDIAN                     0.050      0.275      0.003    1.0E+06    1.0E+06
 90TH PERCENTILE            0.100      0.381      0.005    6.9E+07    5.0E+06
 MAXIMUM                    0.150      0.800      0.006    8.3E+07    2.7E+07
 DATE OF MAXIMUM       1992-10-23 1992-10-23 1991-06-19 1992-03-25 1992-09-28
 STANDARD DEVIATION         0.030      0.165      0.001    2.9E+07    6.1E+06




                             FAEC         Cd         Ba         Pb    PHENOLS
                            STREP      TOTAL      TOTAL      TOTAL           
                            36102      48001      80011      82001      95011
                         No/100ml    mg/L Cd    ug/L Hg    mg/L Pb       ug/L


 NO. OF L-FLAGGED VALUES        0          0          0          1          0
 NO. OF G-FLAGGED VALUES        3          0          0          0          0
 NO. OF UNFLAGGED VALUES        8         21         21         20         22
 MEAN                     5.3E+05      0.002      0.229      0.019      233.0
 MINIMUM                  1.2E+02      0.000      0.000      0.001       35.0
 DATE OF MINIMUM       1992-06-29 1991-05-24 1991-07-22 1992-03-25 1992-12-04
 10TH PERCENTILE          1.3E+03      0.001      0.000      0.003      100.0
 MEDIAN                   5.5E+05      0.002      0.100      0.015      215.0
 90TH PERCENTILE          1.0E+06      0.002      0.670      0.040      367.0
 MAXIMUM                  1.0E+06      0.003      1.200      0.050      730.0
 DATE OF MAXIMUM       1992-09-28 1992-09-28 1992-01-15 1992-10-23 1991-05-24
 STANDARD DEVIATION       4.1E+05      0.001      0.319      0.013      154.6




                          BENZENE       INST
                                      DISCHG
                            95100      97160
                             ug/L       m3/S


 NO. OF L-FLAGGED VALUES       15          0
 NO. OF G-FLAGGED VALUES        0          0
 NO. OF UNFLAGGED VALUES        7         12
 MEAN                         0.3        2.2
 MINIMUM                      0.1        2.2
 DATE OF MINIMUM       1991-03-21 1992-01-15
 10TH PERCENTILE              0.1        2.2
 MEDIAN                       0.1        2.2
 90TH PERCENTILE              0.8        2.2
 MAXIMUM                      1.8        2.2
 DATE OF MAXIMUM       1992-11-18 1992-12-04
 STANDARD DEVIATION           0.4        0.0





 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  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1991-01-21 TO 1992-12-14

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP          B   ORG CARB        PAH
                             COND                  DISS       DISS           
                            02041      02061      05101      06101      06505
                            us/cm      deg C     mg/L B     mg/L C       ug/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       39         37         19         15         14
 MEAN                      13676.       13.6        0.0        4.3       0.28
 MINIMUM                    3790.        0.0        0.0        2.5       0.08
 DATE OF MINIMUM       1992-12-14 1991-04-15 1992-01-07 1991-01-21 1991-09-17
 10TH PERCENTILE            8152.        5.7        0.0        2.8       0.10
 MEDIAN                    13120.       13.0        0.0        4.1       0.21
 90TH PERCENTILE           19868.       21.7        0.0        5.9       0.55
 MAXIMUM                   22600.       22.3        0.0        8.2       0.80
 DATE OF MAXIMUM       1991-09-19 1991-07-31 1992-11-16 1991-11-19 1991-02-18
 STANDARD DEVIATION         4253.        6.3        0.0        1.5       0.21




                               CN   CHLORO A     N KJEL     NO3NO2      NO2-N
                                                                             
                            06606      06711      07004      07105      07207
                          mg/L Cn       mg/L     mg/L N     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES       14          0          3          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       10         38         21         15         22
 MEAN                       0.008     0.0034        3.5       5.12       0.13
 MINIMUM                    0.005     0.0000        0.0       3.06       0.02
 DATE OF MINIMUM       1992-01-07 1992-01-07 1992-03-16 1991-09-17 1992-04-21
 10TH PERCENTILE            0.005     0.0000        0.0       3.07       0.03
 MEDIAN                     0.005     0.0000        3.0       4.99       0.12
 90TH PERCENTILE            0.015     0.0113        6.1       7.39       0.21
 MAXIMUM                    0.030     0.0132        9.1       8.10       0.35
 DATE OF MAXIMUM       1992-03-16 1991-11-12 1992-04-16 1991-01-21 1992-06-22
 STANDARD DEVIATION         0.006     0.0048        2.4       1.72       0.08




                            NO3-N     ORG. N        NH3    PERCENT         O2
                                        DISS                DO SAT       DISS
                            07313      07401      07555      08001      08101
                           mg/L N     mg/L N     mg/L N    PERCENT    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          1          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       23         12         37         14         38
 MEAN                        4.85        3.1       0.83        40.        4.3
 MINIMUM                     2.40        0.6       0.01        12.        1.1
 DATE OF MINIMUM       1992-07-21 1991-07-31 1991-07-31 1991-07-01 1991-07-01
 10TH PERCENTILE             2.73        0.6       0.05        13.        2.2
 MEDIAN                      5.10        2.4       0.55        39.        4.0
 90TH PERCENTILE             6.72        6.0       2.20        58.        6.4
 MAXIMUM                     7.30        7.4       2.90        77.        7.1
 DATE OF MAXIMUM       1992-04-21 1991-01-21 1991-02-18 1991-08-21 1992-02-17
 STANDARD DEVIATION          1.55        2.5       0.82        17.        1.7




                              BOD        COD          F        ALK         pH
                                                   DISS      TOTAL           
                            08201      08301      09105      10101      10302
                          mg/L O2    mg/L O2     mg/L F       mg/L   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       38         39          2         15         39
 MEAN                          2.        57.        2.9     167.74        7.5
 MINIMUM                       1.        16.                144.40        7.2
 DATE OF MINIMUM       1991-08-26 1992-07-21            1991-07-01 1992-01-07
 10TH PERCENTILE               1.        33.                147.65        7.3
 MEDIAN                        2.        58.                168.30        7.5
 90TH PERCENTILE               3.        80.                181.65        7.7
 MAXIMUM                       6.       101.                196.90        7.8
 DATE OF MAXIMUM       1992-01-28 1991-09-17            1991-11-12 1991-08-21
 STANDARD DEVIATION            1.        20.                 14.51        0.2




                         SUSP SOL          P   SULPHATE         Cl    P,P-DDT
                          105 DEG      TOTAL                  DISS           
                            10401      15405      16309      17203      18000
                             mg/L     mg/L P   mg/L SO4    mg/L Cl       ug/L


 NO. OF L-FLAGGED VALUES        0          0          0          0         22
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       38         36         36         38          1
 MEAN                         44.      0.569       786.      5128.      0.000
 MINIMUM                       6.      0.070       210.       163.      0.000
 DATE OF MINIMUM       1992-07-21 1992-03-16 1992-12-14 1992-06-18 1992-01-07
 10TH PERCENTILE              19.      0.350       396.      1601.      0.000
 MEDIAN                       32.      0.575       770.      4907.      0.000
 90TH PERCENTILE              83.      0.756      1099.      8758.      0.000
 MAXIMUM                     154.      0.950      1257.      9429.      0.000
 DATE OF MAXIMUM       1991-02-18 1992-03-23 1991-09-19 1992-10-07 1992-12-14
 STANDARD DEVIATION           34.      0.154       250.      2410.      0.000




                              DDT    O,P-DDT    P,P-DDD    O,P-DDD    P,P-DDE
                            TOTAL                                            
                            18002      18005      18010      18015      18020
                             ug/L       ug/L       ug/L       ug/L       ug/L


 NO. OF L-FLAGGED VALUES       14         23         24         21         23
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          0          3          1
 MEAN                       0.001      0.000      0.000      0.000      0.000
 MINIMUM                    0.001      0.000      0.000      0.000      0.000
 DATE OF MINIMUM       1991-01-21 1992-01-07 1992-01-07 1992-01-07 1992-01-07
 10TH PERCENTILE            0.001      0.000      0.000      0.000      0.000
 MEDIAN                     0.001      0.000      0.000      0.000      0.000
 90TH PERCENTILE            0.001      0.000      0.000      0.000      0.000
 MAXIMUM                    0.005      0.000      0.000      0.000      0.000
 DATE OF MAXIMUM       1991-03-18 1992-12-14 1992-12-14 1992-12-14 1992-12-14
 STANDARD DEVIATION         0.001      0.000      0.000      0.000      0.000




                          O,P-DDE    LINDANE     ALDRIN     ENDRIN   DIELDRIN
                                                                             
                            18025      18070      18130      18140      18150
                             ug/L       ug/L       ug/L       ug/L       ug/L


 NO. OF L-FLAGGED VALUES       24          0         36         23         37
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0         14          2          1          1
 MEAN                       0.000      0.018      0.000      0.000      0.000
 MINIMUM                    0.000      0.008      0.000      0.000      0.000
 DATE OF MINIMUM       1992-01-07 1991-09-17 1992-01-07 1992-01-07 1992-01-07
 10TH PERCENTILE            0.000      0.008      0.000      0.000      0.000
 MEDIAN                     0.000      0.015      0.000      0.000      0.000
 90TH PERCENTILE            0.000      0.030      0.001      0.000      0.001
 MAXIMUM                    0.000      0.039      0.005      0.000      0.005
 DATE OF MAXIMUM       1992-12-14 1991-05-06 1991-03-18 1992-12-14 1991-03-18
 STANDARD DEVIATION         0.000      0.009      0.001      0.000      0.001




                             PCBS         Cr         Mn         Fe         Ni
                                       TOTAL       DISS       DISS      TOTAL
                            18165      24002      25104      26104      28001
                             ug/L    mg/L Cr    mg/L Mn    mg/L Fe    mg/L Ni


 NO. OF L-FLAGGED VALUES        5          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        8         39         39         39         38
 MEAN                       0.003      0.004       0.10       0.70      0.003
 MINIMUM                    0.001      0.000       0.00       0.00      0.000
 DATE OF MINIMUM       1991-05-06 1992-01-07 1992-01-07 1992-01-07 1992-01-07
 10TH PERCENTILE            0.001      0.000       0.00       0.00      0.000
 MEDIAN                     0.002      0.000       0.00       0.00      0.000
 90TH PERCENTILE            0.007      0.010       0.31       1.72      0.009
 MAXIMUM                    0.010      0.024       0.50       5.53      0.020
 DATE OF MAXIMUM       1991-02-18 1991-01-21 1991-03-18 1991-01-21 1991-02-18
 STANDARD DEVIATION         0.003      0.006       0.15       1.18      0.005




                               Cu         Zn         As   COLIFORM   FAEC COL
                            TOTAL       DISS       DISS      TOTAL           
                            29006      30104      33104      36002      36012
                          mg/L Cu    mg/L Zn    mg/L As   No/100ml   No/100ml


 NO. OF L-FLAGGED VALUES        0          0          0          0          1
 NO. OF G-FLAGGED VALUES        0          0          0          3          0
 NO. OF UNFLAGGED VALUES       37         39         39         31         31
 MEAN                       0.006      0.026      0.003    1.9E+05      2975.
 MINIMUM                    0.000      0.000      0.000    1.0E+03        10.
 DATE OF MINIMUM       1992-01-07 1992-01-07 1992-01-07 1992-11-05 1992-06-22
 10TH PERCENTILE            0.000      0.000      0.000    2.8E+03        64.
 MEDIAN                     0.000      0.000      0.000    2.9E+04       500.
 90TH PERCENTILE            0.007      0.073      0.008    6.8E+05      7000.
 MAXIMUM                    0.123      0.176      0.009    1.0E+06     35000.
 DATE OF MAXIMUM       1991-11-12 1991-08-21 1991-07-31 1992-04-16 1992-05-13
 STANDARD DEVIATION         0.021      0.041      0.004    3.1E+05      6817.




                             FAEC         Cd         Ba         Pb    PHENOLS
                            STREP      TOTAL      TOTAL      TOTAL           
                            36102      48001      80011      82001      95011
                         No/100ml    mg/L Cd    ug/L Hg    mg/L Pb       ug/L


 NO. OF L-FLAGGED VALUES        0          1          0          0         39
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       21         38         39         39          0
 MEAN                        798.      0.001      0.000      0.002        3.1
 MINIMUM                       0.      0.000      0.000      0.000        0.0
 DATE OF MINIMUM       1992-07-27 1991-04-15 1992-01-07 1992-01-07 1992-01-07
 10TH PERCENTILE               9.      0.000      0.000      0.000        0.0
 MEDIAN                       37.      0.001      0.000      0.000        0.0
 90TH PERCENTILE             323.      0.003      0.000      0.006        5.0
 MAXIMUM                   15000.      0.004      0.001      0.024       50.0
 DATE OF MAXIMUM       1992-05-13 1992-08-17 1991-02-18 1991-07-01 1991-03-18
 STANDARD DEVIATION         3256.      0.001      0.000      0.004        8.1




                          BENZENE       INST
                                      DISCHG
                            95100      97160
                             ug/L       m3/S


 NO. OF L-FLAGGED VALUES       34          0
 NO. OF G-FLAGGED VALUES        0          0
 NO. OF UNFLAGGED VALUES        4         24
 MEAN                         0.1      123.3
 MINIMUM                      0.1       74.0
 DATE OF MINIMUM       1991-01-21 1992-07-21
 10TH PERCENTILE              0.1       80.0
 MEDIAN                       0.1      111.5
 90TH PERCENTILE              0.1      163.0
 MAXIMUM                      0.7      246.0
 DATE OF MAXIMUM       1992-04-21 1992-12-14
 STANDARD DEVIATION           0.1       46.1





 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  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1991-03-07 TO 1992-11-25

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP          B   ORG CARB        PAH
                             COND                  DISS       DISS           
                            02041      02061      05101      06101      06505
                            us/cm      deg C     mg/L B     mg/L C       ug/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       21         21         11         21         18
 MEAN                        497.       12.5        0.2        5.7       0.11
 MINIMUM                     351.        4.5        0.1        2.8       0.01
 DATE OF MINIMUM       1992-03-19 1991-12-04 1992-02-27 1991-03-07 1991-12-04
 10TH PERCENTILE             381.        5.1        0.1        3.8       0.03
 MEDIAN                      485.       12.0        0.1        5.6       0.09
 90TH PERCENTILE             596.       18.9        0.3        7.2       0.16
 MAXIMUM                     680.       19.0        0.3        8.8       0.40
 DATE OF MAXIMUM       1991-09-20 1992-08-20 1992-05-13 1992-10-22 1991-11-21
 STANDARD DEVIATION           86.        5.0        0.1        1.3       0.09




                               CN   CHLORO A     N KJEL     NO3NO2      NO2-N
                                                                             
                            06606      06711      07004      07105      07207
                          mg/L Cn       mg/L     mg/L N     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES       11          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0         21         11         10         11
 MEAN                       0.005     0.0412        3.6       3.05       0.11
 MINIMUM                    0.005     0.0020        0.0       0.75       0.06
 DATE OF MINIMUM       1992-01-16 1992-01-16 1992-05-13 1991-07-19 1992-03-19
 10TH PERCENTILE            0.005     0.0024        0.2       0.75       0.06
 MEDIAN                     0.005     0.0217        3.7       2.46       0.10
 90TH PERCENTILE            0.005     0.1201        5.7       4.78       0.16
 MAXIMUM                    0.005     0.1601        6.2       8.20       0.18
 DATE OF MAXIMUM       1992-11-25 1992-05-13 1992-07-16 1991-09-20 1992-06-25
 STANDARD DEVIATION         0.000     0.0488        1.7       2.13       0.04




                            NO3-N     ORG. N        NH3    PERCENT         O2
                                        DISS                DO SAT       DISS
                            07313      07401      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       10          9         21         10         29
 MEAN                        3.75        3.7       1.34        59.        6.8
 MINIMUM                     2.20        2.1       0.23        20.        1.8
 DATE OF MINIMUM       1992-08-20 1991-04-19 1992-03-19 1991-10-25 1992-06-25
 10TH PERCENTILE             2.20                  0.30        20.        2.2
 MEDIAN                      3.50        3.8       1.10        49.        7.5
 90TH PERCENTILE             4.80                  2.65        92.       10.3
 MAXIMUM                     7.30        7.1       3.20       125.       12.2
 DATE OF MAXIMUM       1992-01-16 1991-09-20 1991-09-20 1991-08-27 1992-04-30
 STANDARD DEVIATION          1.53        1.5       0.87        34.        3.2



                              BOD        COD          F        ALK         pH
                                                   DISS      TOTAL           
                            08201      08301      09105      10101      10302
                          mg/L O2    mg/L O2     mg/L F       mg/L   pH UNITS


 NO. OF L-FLAGGED VALUES        0          0          3          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       13         21          0         10         21
 MEAN                          4.        40.        0.1     201.28        7.6
 MINIMUM                       2.         2.                142.50        7.2
 DATE OF MINIMUM       1992-10-22 1992-07-16            1991-03-07 1992-07-16
 10TH PERCENTILE               2.        18.                142.50        7.3
 MEDIAN                        4.        38.                194.85        7.5
 90TH PERCENTILE               6.        53.                255.60        7.8
 MAXIMUM                       7.       132.                261.50        8.0
 DATE OF MAXIMUM       1991-04-19 1991-09-20            1991-09-20 1991-08-27
 STANDARD DEVIATION            1.        25.                 41.45        0.2




                         SUSP SOL          P   SULPHATE   SULPHATE         Cl
                          105 DEG      TOTAL                             DISS
                            10401      15405      16302      16309      17203
                             mg/L     mg/L P   mg/L SO4   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       21         19          1         19         21
 MEAN                         16.      0.791        49.        47.        24.
 MINIMUM                       4.      0.130                   34.         7.
 DATE OF MINIMUM       1991-11-21 1992-08-20            1992-08-20 1992-03-19
 10TH PERCENTILE               5.      0.283                   36.        17.
 MEDIAN                       17.      0.660                   45.        22.
 90TH PERCENTILE              24.      1.282                   60.        34.
 MAXIMUM                      32.      1.630                   67.        47.
 DATE OF MAXIMUM       1991-08-27 1991-10-25            1991-09-20 1992-04-30
 STANDARD DEVIATION            7.      0.411                    9.         8.




                          P,P-DDT        DDT    O,P-DDT    O,P-DDD    P,P-DDE
                                       TOTAL                                 
                            18000      18002      18005      18015      18020
                             ug/L       ug/L       ug/L       ug/L       ug/L


 NO. OF L-FLAGGED VALUES       10         10         11         11         11
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1          0          0          0          0
 MEAN                       0.001      0.001      0.001      0.001      0.001
 MINIMUM                    0.001      0.001      0.001      0.001      0.001
 DATE OF MINIMUM       1992-01-16 1991-03-07 1992-01-16 1992-01-16 1992-01-16
 10TH PERCENTILE            0.001      0.001      0.001      0.001      0.001
 MEDIAN                     0.001      0.001      0.001      0.001      0.001
 90TH PERCENTILE            0.001      0.001      0.001      0.001      0.001
 MAXIMUM                    0.001      0.001      0.001      0.001      0.001
 DATE OF MAXIMUM       1992-11-25 1991-12-04 1992-11-25 1992-11-25 1992-11-25
 STANDARD DEVIATION         0.000      0.000      0.000      0.000      0.000




                          O,P-DDE    LINDANE     ALDRIN     ENDRIN   DIELDRIN
                                                                             
                            18025      18070      18130      18140      18150
                             ug/L       ug/L       ug/L       ug/L       ug/L


 NO. OF L-FLAGGED VALUES       11          0         16         11         20
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0         10          5          0          1
 MEAN                       0.001      0.022      0.001      0.001      0.001
 MINIMUM                    0.001      0.006      0.001      0.001      0.001
 DATE OF MINIMUM       1992-01-16 1991-11-21 1991-03-07 1992-01-16 1991-03-07
 10TH PERCENTILE            0.001      0.006      0.001      0.001      0.001
 MEDIAN                     0.001      0.021      0.001      0.001      0.001
 90TH PERCENTILE            0.001      0.037      0.002      0.001      0.001
 MAXIMUM                    0.001      0.041      0.005      0.001      0.001
 DATE OF MAXIMUM       1992-11-25 1991-05-17 1991-07-19 1992-11-25 1992-11-25
 STANDARD DEVIATION         0.000      0.012      0.001      0.000      0.000




                             PCBS   ATRAZINE         Cr         Mn         Fe
                                                  TOTAL       DISS       DISS
                            18165      18415      24002      25104      26104
                             ug/L       ug/L    mg/L Cr    mg/L Mn    mg/L Fe


 NO. OF L-FLAGGED VALUES        2          1          1          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        8         19         20         20         21
 MEAN                       0.006        0.6      0.005       0.12       0.37
 MINIMUM                    0.001        0.0      0.000       0.02       0.10
 DATE OF MINIMUM       1991-03-07 1992-11-25 1991-08-27 1991-11-21 1991-11-21
 10TH PERCENTILE            0.001        0.1      0.002       0.07       0.24
 MEDIAN                     0.002        0.3      0.006       0.12       0.32
 90TH PERCENTILE            0.011        1.4      0.008       0.16       0.52
 MAXIMUM                    0.024        2.9      0.010       0.19       0.78
 DATE OF MAXIMUM       1991-06-26 1992-06-25 1992-02-27 1991-09-20 1992-11-25
 STANDARD DEVIATION         0.007        0.8      0.003       0.04       0.15




                               Ni         Cu         Zn         As   COLIFORM
                            TOTAL      TOTAL       DISS       DISS      TOTAL
                            28001      29006      30104      33104      36002
                          mg/L Ni    mg/L Cu    mg/L Zn    mg/L As   No/100ml


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          1
 NO. OF UNFLAGGED VALUES       21         20         21         21         20
 MEAN                       0.005      0.013      0.048      0.003    2.0E+05
 MINIMUM                    0.002      0.005      0.018      0.002    1.2E+02
 DATE OF MINIMUM       1991-04-19 1991-05-17 1991-11-21 1991-03-07 1991-03-07
 10TH PERCENTILE            0.002      0.005      0.023      0.002    1.7E+03
 MEDIAN                     0.005      0.008      0.046      0.003    8.9E+04
 90TH PERCENTILE            0.009      0.022      0.084      0.006    4.2E+05
 MAXIMUM                    0.010      0.055      0.106      0.007    1.0E+06
 DATE OF MAXIMUM       1992-10-22 1992-02-27 1992-04-30 1991-07-19 1992-10-22
 STANDARD DEVIATION         0.002      0.014      0.024      0.001    3.0E+05




                         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          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       20         11         21         21         21
 MEAN                       8715.      3134.      0.001      0.135      0.008
 MINIMUM                      60.        30.      0.000      0.000      0.002
 DATE OF MINIMUM       1991-04-19 1992-07-16 1991-06-26 1991-09-20 1992-09-15
 10TH PERCENTILE              90.        34.      0.000      0.000      0.003
 MEDIAN                     2750.       700.      0.001      0.100      0.007
 90TH PERCENTILE           23000.      6420.      0.001      0.280      0.012
 MAXIMUM                   50000.     19500.      0.002      1.340      0.019
 DATE OF MAXIMUM       1992-01-16 1992-01-16 1991-11-21 1992-10-22 1992-04-30
 STANDARD DEVIATION        12708.      5798.      0.000      0.295      0.004




                          PHENOLS    BENZENE
                                            
                            95011      95100
                             ug/L       ug/L


 NO. OF L-FLAGGED VALUES       21         19
 NO. OF G-FLAGGED VALUES        0          0
 NO. OF UNFLAGGED VALUES        0          2
 MEAN                         5.0        0.3
 MINIMUM                      5.0        0.1
 DATE OF MINIMUM       1991-03-07 1991-03-07
 10TH PERCENTILE              5.0        0.1
 MEDIAN                       5.0        0.1
 90TH PERCENTILE              5.0        0.1
 MAXIMUM                      5.0        3.4
 DATE OF MAXIMUM       1992-11-25 1991-05-17
 STANDARD DEVIATION           0.0        0.7





 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  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1991-03-07 TO 1992-12-18

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP          B   ORG CARB        PAH
                             COND                  DISS       DISS           
                            02041      02061      05101      06101      06505
                            us/cm      deg C     mg/L B     mg/L C       ug/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       20         20          8         19         18
 MEAN                        412.       14.4        0.1       14.7       0.11
 MINIMUM                     332.        2.5        0.0        2.4       0.03
 DATE OF MINIMUM       1992-03-19 1991-12-18 1992-11-25 1991-03-07 1992-01-16
 10TH PERCENTILE             355.        5.5                   2.6       0.03
 MEDIAN                      404.       15.8        0.1        3.7       0.09
 90TH PERCENTILE             465.       21.0                   5.4       0.19
 MAXIMUM                     503.       25.0        0.2      209.0       0.41
 DATE OF MAXIMUM       1992-09-23 1991-07-24 1992-04-30 1992-01-16 1992-05-25
 STANDARD DEVIATION           39.        6.5        0.1       47.1       0.10




                               CN   CHLORO A     N KJEL     NO3NO2      NO2-N
                                                                             
                            06606      06711      07004      07105      07207
                          mg/L Cn       mg/L     mg/L N     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES       10          0          3          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0         20          7         10         10
 MEAN                       0.005     0.0252        1.5       2.06       0.02
 MINIMUM                    0.005     0.0008        0.0       0.98       0.01
 DATE OF MINIMUM       1992-01-16 1992-12-18 1992-01-16 1991-08-27 1992-04-30
 10TH PERCENTILE            0.005     0.0013        0.0       0.98       0.01
 MEDIAN                     0.005     0.0078        0.1       1.62       0.03
 90TH PERCENTILE            0.005     0.0746        2.9       3.21       0.03
 MAXIMUM                    0.005     0.0794        8.7       3.73       0.03
 DATE OF MAXIMUM       1992-12-18 1992-04-30 1992-03-19 1991-11-21 1992-06-25
 STANDARD DEVIATION         0.000     0.0302        2.7       0.94       0.01




                            NO3-N     ORG. N        NH3    PERCENT         O2
                                        DISS                DO SAT       DISS
                            07313      07401      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        9          7         20         10         20
 MEAN                        2.76        1.6       0.21       108.       10.5
 MINIMUM                     1.50        0.4       0.03        89.        7.5
 DATE OF MINIMUM       1992-05-25 1991-07-24 1991-05-23 1991-09-26 1992-05-25
 10TH PERCENTILE                                   0.03        89.        7.7
 MEDIAN                      2.30        1.6       0.15       105.       10.9
 90TH PERCENTILE                                   0.29       127.       12.5
 MAXIMUM                     6.60        3.1       0.95       134.       12.9
 DATE OF MAXIMUM       1992-01-16 1991-05-23 1991-09-26 1991-05-23 1991-12-18
 STANDARD DEVIATION          1.56        0.9       0.22        16.        1.8




                              BOD        COD          F        ALK         pH
                                                   DISS      TOTAL           
                            08201      08301      09105      10101      10302
                          mg/L O2    mg/L O2     mg/L F       mg/L   pH UNITS


 NO. OF L-FLAGGED VALUES        0          0          1          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       20         20          0         10         20
 MEAN                          4.        24.        0.1     152.69        8.0
 MINIMUM                       2.         2.                138.60        7.6
 DATE OF MINIMUM       1991-03-07 1992-07-21            1991-12-18 1992-05-25
 10TH PERCENTILE               2.        12.                138.60        7.6
 MEDIAN                        4.        23.                153.40        7.9
 90TH PERCENTILE               7.        36.                158.70        8.5
 MAXIMUM                       8.        52.                174.20        8.6
 DATE OF MAXIMUM       1991-06-26 1991-06-26            1991-09-26 1991-05-23
 STANDARD DEVIATION            2.        11.                 10.07        0.3




                         SUSP SOL          P   SULPHATE         Cl    P,P-DDT
                          105 DEG      TOTAL                  DISS           
                            10401      15405      16309      17203      18000
                             mg/L     mg/L P   mg/L SO4    mg/L Cl       ug/L


 NO. OF L-FLAGGED VALUES        0          0          0          0          9
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       20         19         18         20          0
 MEAN                         14.      0.364        76.        22.      0.001
 MINIMUM                       2.      0.100        31.        10.      0.001
 DATE OF MINIMUM       1991-07-24 1992-07-21 1992-11-25 1992-12-18 1992-01-16
 10TH PERCENTILE               2.      0.100        32.        11.           
 MEDIAN                       11.      0.200        44.        18.      0.001
 90TH PERCENTILE              27.      0.435        58.        24.           
 MAXIMUM                      51.      2.140       620.       115.      0.001
 DATE OF MAXIMUM       1992-11-25 1992-03-19 1992-09-23 1991-04-19 1992-12-18
 STANDARD DEVIATION           12.      0.536       136.        22.      0.000




                              DDT    O,P-DDT    O,P-DDD    P,P-DDE    O,P-DDE
                            TOTAL                                            
                            18002      18005      18015      18020      18025
                             ug/L       ug/L       ug/L       ug/L       ug/L


 NO. OF L-FLAGGED VALUES        9          9          9          9          9
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          0          0          0
 MEAN                       0.001      0.001      0.001      0.001      0.001
 MINIMUM                    0.001      0.001      0.001      0.001      0.001
 DATE OF MINIMUM       1991-03-07 1992-01-16 1992-01-16 1992-01-16 1992-01-16
 10TH PERCENTILE                                                             
 MEDIAN                     0.001      0.001      0.001      0.001      0.001
 90TH PERCENTILE                                                             
 MAXIMUM                    0.001      0.001      0.001      0.001      0.001
 DATE OF MAXIMUM       1991-12-18 1992-12-18 1992-12-18 1992-12-18 1992-12-18
 STANDARD DEVIATION         0.000      0.000      0.000      0.000      0.000




                          LINDANE     ALDRIN     ENDRIN   DIELDRIN       PCBS
                                                                             
                            18070      18130      18140      18150      18165
                             ug/L       ug/L       ug/L       ug/L       ug/L


 NO. OF L-FLAGGED VALUES        0         17          9         18          7
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        9          2          0          0          2
 MEAN                       0.009      0.001      0.001      0.001      0.001
 MINIMUM                    0.004      0.001      0.001      0.001      0.001
 DATE OF MINIMUM       1991-12-18 1991-03-07 1992-01-16 1991-03-07 1991-03-07
 10TH PERCENTILE                       0.001                 0.001           
 MEDIAN                     0.007      0.001      0.001      0.001      0.001
 90TH PERCENTILE                       0.001                 0.001           
 MAXIMUM                    0.015      0.001      0.001      0.001      0.001
 DATE OF MAXIMUM       1991-08-27 1992-12-18 1992-12-18 1992-12-18 1991-12-18
 STANDARD DEVIATION         0.004      0.000      0.000      0.000      0.000




                               Cr         Mn         Fe         Ni         Cu
                            TOTAL       DISS       DISS      TOTAL      TOTAL
                            24002      25104      26104      28001      29006
                          mg/L Cr    mg/L Mn    mg/L Fe    mg/L Ni    mg/L Cu


 NO. OF L-FLAGGED VALUES        0          2          0          2          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       20         18         20         18         20
 MEAN                       0.005       0.05       0.29      0.004      0.010
 MINIMUM                    0.001       0.01       0.08      0.001      0.003
 DATE OF MINIMUM       1991-08-27 1992-11-25 1992-11-25 1991-10-17 1991-06-26
 10TH PERCENTILE            0.002       0.02       0.09      0.001      0.005
 MEDIAN                     0.004       0.05       0.23      0.003      0.008
 90TH PERCENTILE            0.009       0.09       0.45      0.009      0.016
 MAXIMUM                    0.013       0.14       0.82      0.010      0.034
 DATE OF MAXIMUM       1991-09-26 1991-08-27 1991-12-18 1992-07-21 1992-03-19
 STANDARD DEVIATION         0.003       0.03       0.18      0.003      0.008




                               Zn         As   COLIFORM   FAEC COL       FAEC
                             DISS       DISS      TOTAL                 STREP
                            30104      33104      36002      36012      36102
                          mg/L Zn    mg/L As   No/100ml   No/100ml   No/100ml


 NO. OF L-FLAGGED VALUES        0          1          1          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       20         19         19         18         10
 MEAN                       0.059      0.001    6.7E+04      3749.       981.
 MINIMUM                    0.019      0.001    1.0E+01        10.        10.
 DATE OF MINIMUM       1992-11-25 1991-06-26 1991-04-19 1991-04-19 1992-04-30
 10TH PERCENTILE            0.022      0.001    5.3E+03        91.        10.
 MEDIAN                     0.054      0.001    2.4E+04      1600.       310.
 90TH PERCENTILE            0.086      0.002    2.0E+05     12000.      2200.
 MAXIMUM                    0.140      0.003    3.0E+05     16000.      4000.
 DATE OF MAXIMUM       1992-09-23 1991-09-26 1991-09-26 1991-09-26 1992-01-16
 STANDARD DEVIATION         0.033      0.001    8.8E+04      4817.      1331.




                               Cd         Ba         Pb    PHENOLS    BENZENE
                            TOTAL      TOTAL      TOTAL                      
                            48001      80011      82001      95011      95100
                          mg/L Cd    ug/L Hg    mg/L Pb       ug/L       ug/L


 NO. OF L-FLAGGED VALUES        0          0          0         20         16
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       20         20         20          0          4
 MEAN                       0.000      0.070      0.004        5.0        0.2
 MINIMUM                    0.000      0.000      0.001        5.0        0.1
 DATE OF MINIMUM       1991-04-19 1991-04-19 1992-09-23 1991-03-07 1991-03-07
 10TH PERCENTILE            0.000      0.000      0.002        5.0        0.1
 MEDIAN                     0.000      0.000      0.004        5.0        0.1
 90TH PERCENTILE            0.001      0.200      0.007        5.0        0.5
 MAXIMUM                    0.001      0.500      0.008        5.0        0.8
 DATE OF MAXIMUM       1991-05-23 1992-01-16 1991-08-27 1992-12-18 1992-03-19
 STANDARD DEVIATION         0.000      0.122      0.002        0.0        0.2





 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  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1991-03-11 TO 1992-12-08

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP          B   ORG CARB        PAH
                             COND                  DISS       DISS           
                            02041      02061      05101      06101      06505
                            us/cm      deg C     mg/L B     mg/L C       ug/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       24         23         12         24         18
 MEAN                        530.       14.6        0.1        4.1       0.12
 MINIMUM                     295.        6.2        0.1        2.1       0.03
 DATE OF MINIMUM       1992-12-08 1992-02-04 1992-03-31 1992-03-31 1991-07-23
 10TH PERCENTILE             402.        7.5        0.1        3.2       0.04
 MEDIAN                      510.       12.7        0.1        3.9       0.11
 90TH PERCENTILE             670.       21.2        0.2        5.2       0.23
 MAXIMUM                     971.       24.8        0.3        5.6       0.30
 DATE OF MAXIMUM       1991-10-15 1992-07-21 1992-04-28 1991-05-01 1991-05-01
 STANDARD DEVIATION          134.        5.8        0.1        0.8       0.08




                               CN   CHLORO A     N KJEL     NO3NO2      NO2-N
                                                                             
                            06606      06711      07004      07105      07207
                          mg/L Cn       mg/L     mg/L N     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        9          0          5          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        4         24          8         11         13
 MEAN                       0.006     0.0125        1.9       2.36       0.11
 MINIMUM                    0.005     0.0014        0.0       0.86       0.03
 DATE OF MINIMUM       1992-01-07 1991-12-10 1992-01-07 1991-09-17 1992-12-08
 10TH PERCENTILE            0.005     0.0019        0.0       0.94       0.03
 MEDIAN                     0.005     0.0090        1.2       2.22       0.08
 90TH PERCENTILE            0.008     0.0261        4.8       3.12       0.19
 MAXIMUM                    0.013     0.0398        5.2       3.67       0.25
 DATE OF MAXIMUM       1992-02-04 1991-09-17 1992-11-10 1991-12-10 1992-10-13
 STANDARD DEVIATION         0.003     0.0108        2.0       0.78       0.07




                            NO3-N     ORG. N        NH3    PERCENT         O2
                                        DISS                DO SAT       DISS
                            07313      07401      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       13          5         24         11         24
 MEAN                        3.03        1.8       0.78        77.        8.1
 MINIMUM                     0.03        1.1       0.16        47.        4.2
 DATE OF MINIMUM       1992-12-08 1991-08-20 1992-12-08 1991-06-25 1991-06-25
 10TH PERCENTILE             0.68                  0.17        49.        5.2
 MEDIAN                      3.30        1.8       0.61        75.        7.7
 90TH PERCENTILE             4.14                  1.35        91.       11.1
 MAXIMUM                     4.20        2.7       2.40       108.       12.2
 DATE OF MAXIMUM       1992-02-04 1991-06-25 1991-09-17 1991-04-02 1992-12-08
 STANDARD DEVIATION          1.10        0.7       0.55        16.        2.2



                              BOD        COD          F        ALK         pH
                                                   DISS      TOTAL           
                            08201      08301      09105      10101      10302
                          mg/L O2    mg/L O2     mg/L F       mg/L   pH UNITS


 NO. OF L-FLAGGED VALUES        0          0          1          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       24         24          2         11         24
 MEAN                          3.        19.        0.5     140.09        7.7
 MINIMUM                       1.         9.                118.00        7.2
 DATE OF MINIMUM       1992-10-13 1992-10-13            1991-06-25 1991-06-25
 10TH PERCENTILE               2.        10.                118.18        7.5
 MEDIAN                        3.        16.                129.20        7.7
 90TH PERCENTILE               5.        32.                173.10        7.9
 MAXIMUM                       7.        51.                182.50        8.0
 DATE OF MAXIMUM       1991-10-15 1991-06-25            1991-09-17 1991-04-02
 STANDARD DEVIATION            1.        11.                 22.19        0.2




                         SUSP SOL          P   SULPHATE         Cl    P,P-DDT
                          105 DEG      TOTAL                  DISS           
                            10401      15405      16309      17203      18000
                             mg/L     mg/L P   mg/L SO4    mg/L Cl       ug/L


 NO. OF L-FLAGGED VALUES        0          0          0          0         12
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       24         24         23         23          0
 MEAN                         10.      0.475        51.        54.      0.001
 MINIMUM                       2.      0.020        24.        17.      0.001
 DATE OF MINIMUM       1992-05-26 1992-03-31 1992-12-08 1992-12-08 1992-01-07
 10TH PERCENTILE               2.      0.118        33.        22.      0.001
 MEDIAN                        7.      0.435        51.        47.      0.001
 90TH PERCENTILE              17.      0.945        66.        76.      0.001
 MAXIMUM                      59.      1.360        80.       174.      0.001
 DATE OF MAXIMUM       1992-12-08 1991-06-25 1991-10-15 1991-10-15 1992-12-08
 STANDARD DEVIATION           12.      0.330        13.        34.      0.000




                              DDT    O,P-DDT    P,P-DDD    O,P-DDD    P,P-DDE
                            TOTAL                                            
                            18002      18005      18010      18015      18020
                             ug/L       ug/L       ug/L       ug/L       ug/L


 NO. OF L-FLAGGED VALUES       10         12         12         12         12
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1          0          0          0          0
 MEAN                       0.001      0.001      0.001      0.001      0.001
 MINIMUM                    0.001      0.001      0.001      0.001      0.001
 DATE OF MINIMUM       1991-03-11 1992-01-07 1992-01-07 1992-01-07 1992-01-07
 10TH PERCENTILE            0.001      0.001      0.001      0.001      0.001
 MEDIAN                     0.001      0.001      0.001      0.001      0.001
 90TH PERCENTILE            0.001      0.001      0.001      0.001      0.001
 MAXIMUM                    0.004      0.001      0.001      0.001      0.001
 DATE OF MAXIMUM       1991-10-15 1992-12-08 1992-12-08 1992-12-08 1992-12-08
 STANDARD DEVIATION         0.001      0.000      0.000      0.000      0.000




                          O,P-DDE    LINDANE     ALDRIN     ENDRIN   DIELDRIN
                                                                             
                            18025      18070      18130      18140      18150
                             ug/L       ug/L       ug/L       ug/L       ug/L


 NO. OF L-FLAGGED VALUES       12          0         17         12         23
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0         11          6          0          0
 MEAN                       0.001      0.019      0.001      0.001      0.001
 MINIMUM                    0.001      0.008      0.001      0.001      0.001
 DATE OF MINIMUM       1992-01-07 1991-12-10 1991-03-11 1992-01-07 1991-03-11
 10TH PERCENTILE            0.001      0.008      0.001      0.001      0.001
 MEDIAN                     0.001      0.016      0.001      0.001      0.001
 90TH PERCENTILE            0.001      0.026      0.003      0.001      0.001
 MAXIMUM                    0.001      0.033      0.004      0.001      0.001
 DATE OF MAXIMUM       1992-12-08 1991-06-25 1991-05-28 1992-12-08 1992-12-08
 STANDARD DEVIATION         0.000      0.008      0.001      0.000      0.000




                             PCBS   ATRAZINE         Cr         Mn         Fe
                                                  TOTAL       DISS       DISS
                            18165      18415      24002      25104      26104
                             ug/L       ug/L    mg/L Cr    mg/L Mn    mg/L Fe


 NO. OF L-FLAGGED VALUES        3          2          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        8         20         24         24         24
 MEAN                       0.003        0.3      0.008       0.18       0.34
 MINIMUM                    0.001        0.0      0.003       0.06       0.11
 DATE OF MINIMUM       1991-03-11 1991-12-10 1992-05-26 1992-03-04 1992-10-13
 10TH PERCENTILE            0.001        0.0      0.004       0.06       0.15
 MEDIAN                     0.002        0.1      0.009       0.09       0.26
 90TH PERCENTILE            0.007        0.7      0.011       0.25       0.56
 MAXIMUM                    0.008        1.2      0.017       0.92       1.04
 DATE OF MAXIMUM       1991-05-01 1992-06-23 1991-05-01 1992-12-08 1991-06-25
 STANDARD DEVIATION         0.002        0.3      0.003       0.22       0.21




                               Ni         Cu         Zn         As   COLIFORM
                            TOTAL      TOTAL       DISS       DISS      TOTAL
                            28001      29006      30104      33104      36002
                          mg/L Ni    mg/L Cu    mg/L Zn    mg/L As   No/100ml


 NO. OF L-FLAGGED VALUES        0          0          0          2          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          1
 NO. OF UNFLAGGED VALUES       24         23         24         22         23
 MEAN                       0.006      0.018      0.077      0.003    2.0E+05
 MINIMUM                    0.002      0.003      0.029      0.001    1.2E+04
 DATE OF MINIMUM       1991-05-28 1992-10-13 1991-09-17 1991-12-10 1991-05-28
 10TH PERCENTILE            0.003      0.004      0.034      0.001    1.7E+04
 MEDIAN                     0.005      0.009      0.067      0.002    1.2E+05
 90TH PERCENTILE            0.010      0.040      0.122      0.005    5.0E+05
 MAXIMUM                    0.011      0.092      0.174      0.009    1.0E+06
 DATE OF MAXIMUM       1992-11-10 1992-01-07 1992-02-04 1991-10-15 1991-12-10
 STANDARD DEVIATION         0.003      0.021      0.040      0.002    2.4E+05




                         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        1          0          0          0          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         13         24         24         23
 MEAN                      13413.      3695.      0.001      0.058      0.007
 MINIMUM                      10.        40.      0.000      0.000      0.001
 DATE OF MINIMUM       1992-06-23 1992-07-21 1991-07-23 1991-05-28 1992-10-13
 10TH PERCENTILE            1000.        88.      0.000      0.000      0.002
 MEDIAN                    12000.      3200.      0.001      0.051      0.006
 90TH PERCENTILE           27400.      7700.      0.001      0.100      0.014
 MAXIMUM                   31000.     10800.      0.002      0.200      0.021
 DATE OF MAXIMUM       1991-11-12 1992-02-04 1991-03-11 1992-06-23 1991-06-25
 STANDARD DEVIATION         9960.      3557.      0.001      0.065      0.005




                          PHENOLS    BENZENE
                                            
                            95011      95100
                             ug/L       ug/L


 NO. OF L-FLAGGED VALUES       23         19
 NO. OF G-FLAGGED VALUES        0          0
 NO. OF UNFLAGGED VALUES        0          4
 MEAN                         5.0        0.1
 MINIMUM                      5.0        0.1
 DATE OF MINIMUM       1991-03-11 1991-03-11
 10TH PERCENTILE              5.0        0.1
 MEDIAN                       5.0        0.1
 90TH PERCENTILE              5.0        0.2
 MAXIMUM                      5.0        0.4
 DATE OF MAXIMUM       1992-11-10 1991-05-01
 STANDARD DEVIATION           0.0        0.1





 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  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1991-03-07 TO 1992-12-18

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP          B   ORG CARB        PAH
                             COND                  DISS       DISS           
                            02041      02061      05101      06101      06505
                            us/cm      deg C     mg/L B     mg/L C       ug/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       21         21          7         20         14
 MEAN                        136.       12.3        0.1        4.0       0.16
 MINIMUM                     120.        4.5        0.0        1.9       0.07
 DATE OF MINIMUM       1992-03-19 1991-12-18 1992-07-21 1992-01-16 1991-07-24
 10TH PERCENTILE             121.        5.1                   2.1       0.07
 MEDIAN                      132.       11.0        0.1        4.0       0.13
 90TH PERCENTILE             151.       19.0                   5.1       0.24
 MAXIMUM                     178.       21.5        0.2        7.5       0.42
 DATE OF MAXIMUM       1992-08-20 1991-08-27 1992-01-16 1992-08-20 1991-09-26
 STANDARD DEVIATION           15.        5.7        0.1        1.3       0.10




                               CN   CHLORO A     N KJEL     NO3NO2      NO2-N
                                                                             
                            06606      06711      07004      07105      07207
                          mg/L Cn       mg/L     mg/L N     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES       11          0          3          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0         20          8         10         11
 MEAN                       0.005     0.0037        1.6       2.58       0.03
 MINIMUM                    0.005     0.0004        0.0       1.41       0.01
 DATE OF MINIMUM       1992-01-16 1992-12-18 1992-01-16 1991-10-17 1992-09-23
 10TH PERCENTILE            0.005     0.0005        0.0       1.41       0.01
 MEDIAN                     0.005     0.0024        0.8       2.24       0.03
 90TH PERCENTILE            0.005     0.0075        3.8       3.73       0.04
 MAXIMUM                    0.005     0.0178        5.7       4.30       0.05
 DATE OF MAXIMUM       1992-12-18 1991-09-26 1992-06-25 1991-11-21 1992-04-30
 STANDARD DEVIATION         0.000     0.0044        1.8       1.00       0.01




                            NO3-N     ORG. N        NH3    PERCENT         O2
                                        DISS                DO SAT       DISS
                            07313      07401      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       10          7         21         10         21
 MEAN                        3.52        1.0       0.24       105.       10.7
 MINIMUM                     1.80        0.3       0.03        72.        7.0
 DATE OF MINIMUM       1992-09-23 1991-04-19 1992-03-19 1991-09-26 1991-09-26
 10TH PERCENTILE             1.80                  0.04        72.        8.7
 MEDIAN                      2.90        1.0       0.26       109.       10.4
 90TH PERCENTILE             4.40                  0.45       126.       11.9
 MAXIMUM                     8.81        1.6       0.55       130.       12.8
 DATE OF MAXIMUM       1992-01-16 1991-11-21 1991-09-26 1991-08-27 1991-04-19
 STANDARD DEVIATION          2.08        0.5       0.14        17.        1.5




                              BOD        COD          F        ALK         pH
                                                   DISS      TOTAL           
                            08201      08301      09105      10101      10302
                          mg/L O2    mg/L O2     mg/L F       mg/L   pH UNITS


 NO. OF L-FLAGGED VALUES        0          0          1          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       21         21          1         10         22
 MEAN                          4.        22.        0.2      29.28        7.3
 MINIMUM                       2.         2.                 18.50        6.7
 DATE OF MINIMUM       1991-03-07 1992-07-21            1991-11-21 1992-05-25
 10TH PERCENTILE               2.        10.                 18.50        6.8
 MEDIAN                        4.        20.                 28.45        7.0
 90TH PERCENTILE               6.        36.                 40.10        7.6
 MAXIMUM                       7.        45.                 43.00       11.0
 DATE OF MAXIMUM       1992-05-25 1991-09-26            1991-09-26 1992-12-18
 STANDARD DEVIATION            1.        10.                  8.81        0.9




                         SUSP SOL          P   SULPHATE         Cl    P,P-DDT
                          105 DEG      TOTAL                  DISS           
                            10401      15405      16309      17203      18000
                             mg/L     mg/L P   mg/L SO4    mg/L Cl       ug/L


 NO. OF L-FLAGGED VALUES        0          0          0          0         10
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       20         14         19         21          0
 MEAN                         18.      0.151        11.        15.      0.001
 MINIMUM                       1.      0.020         8.         6.      0.001
 DATE OF MINIMUM       1991-03-07 1992-12-18 1991-09-26 1991-05-23 1992-01-16
 10TH PERCENTILE               1.      0.024         9.         8.      0.001
 MEDIAN                        7.      0.130        11.        12.      0.001
 90TH PERCENTILE              55.      0.235        12.        15.      0.001
 MAXIMUM                      95.      0.540        16.        81.      0.001
 DATE OF MAXIMUM       1991-09-26 1992-03-19 1991-12-18 1992-04-30 1992-11-25
 STANDARD DEVIATION           27.      0.133         2.        15.      0.000




                              DDT    O,P-DDT    P,P-DDD    O,P-DDD    P,P-DDE
                            TOTAL                                            
                            18002      18005      18010      18015      18020
                             ug/L       ug/L       ug/L       ug/L       ug/L


 NO. OF L-FLAGGED VALUES        8         10         11         11         11
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          0          0          0
 MEAN                       0.001      0.001      0.001      0.001      0.001
 MINIMUM                    0.001      0.001      0.001      0.001      0.001
 DATE OF MINIMUM       1991-03-07 1992-01-16 1992-01-16 1992-01-16 1992-01-16
 10TH PERCENTILE                       0.001      0.001      0.001      0.001
 MEDIAN                     0.001      0.001      0.001      0.001      0.001
 90TH PERCENTILE                       0.001      0.001      0.001      0.001
 MAXIMUM                    0.001      0.001      0.001      0.001      0.001
 DATE OF MAXIMUM       1991-12-18 1992-11-25 1992-12-18 1992-12-18 1992-12-18
 STANDARD DEVIATION         0.000      0.000      0.000      0.000      0.000




                          O,P-DDE    LINDANE     ALDRIN     ENDRIN   DIELDRIN
                                                                             
                            18025      18070      18130      18140      18150
                             ug/L       ug/L       ug/L       ug/L       ug/L


 NO. OF L-FLAGGED VALUES       11          0         19         11         21
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0         10          2          0          0
 MEAN                       0.001      0.006      0.001      0.001      0.001
 MINIMUM                    0.001      0.001      0.001      0.001      0.001
 DATE OF MINIMUM       1992-01-16 1991-11-21 1991-03-07 1992-01-16 1991-03-07
 10TH PERCENTILE            0.001      0.001      0.001      0.001      0.001
 MEDIAN                     0.001      0.005      0.001      0.001      0.001
 90TH PERCENTILE            0.001      0.012      0.001      0.001      0.001
 MAXIMUM                    0.001      0.012      0.003      0.001      0.001
 DATE OF MAXIMUM       1992-12-18 1991-09-26 1992-06-25 1992-12-18 1992-12-18
 STANDARD DEVIATION         0.000      0.004      0.000      0.000      0.000




                             PCBS   ATRAZINE         Cr         Mn         Fe
                                                  TOTAL       DISS       DISS
                            18165      18415      24002      25104      26104
                             ug/L       ug/L    mg/L Cr    mg/L Mn    mg/L Fe


 NO. OF L-FLAGGED VALUES        4          7          0          1          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        4         13         21         20         20
 MEAN                       0.001        0.1      0.007       0.14       0.55
 MINIMUM                    0.001        0.0      0.002       0.02       0.03
 DATE OF MINIMUM       1991-05-23 1992-09-23 1991-05-23 1991-11-21 1991-11-21
 10TH PERCENTILE                         0.0      0.002       0.03       0.17
 MEDIAN                     0.001        0.1      0.003       0.08       0.42
 90TH PERCENTILE                         0.4      0.008       0.19       0.86
 MAXIMUM                    0.002        0.4      0.052       0.86       2.29
 DATE OF MAXIMUM       1991-10-17 1991-05-23 1992-11-25 1992-11-25 1992-06-25
 STANDARD DEVIATION         0.000        0.1      0.011       0.18       0.50




                               Ni         Cu         Zn         As   COLIFORM
                            TOTAL      TOTAL       DISS       DISS      TOTAL
                            28001      29006      30104      33104      36002
                          mg/L Ni    mg/L Cu    mg/L Zn    mg/L As   No/100ml


 NO. OF L-FLAGGED VALUES        0          0          5          3          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          2
 NO. OF UNFLAGGED VALUES       21         21         16         18         18
 MEAN                       0.007      0.010      0.020      0.001    3.4E+05
 MINIMUM                    0.003      0.003      0.010      0.001    3.0E+02
 DATE OF MINIMUM       1991-05-23 1991-03-07 1991-03-07 1991-04-19 1991-04-19
 10TH PERCENTILE            0.003      0.003      0.010      0.001    7.0E+03
 MEDIAN                     0.005      0.007      0.020      0.001    9.6E+04
 90TH PERCENTILE            0.008      0.016      0.030      0.002    9.2E+05
 MAXIMUM                    0.028      0.066      0.038      0.003    1.0E+06
 DATE OF MAXIMUM       1991-04-19 1991-11-21 1991-12-18 1991-08-27 1991-09-26
 STANDARD DEVIATION         0.005      0.014      0.008      0.001    3.9E+05



                         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          0          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       18         11         20         21         20
 MEAN                     2.0E+04      1146.      0.000      0.067      0.005
 MINIMUM                  2.0E+01       160.      0.000      0.000      0.001
 DATE OF MINIMUM       1991-04-19 1992-04-30 1991-03-07 1991-04-19 1991-03-07
 10TH PERCENTILE          2.6E+02       166.      0.000      0.000      0.001
 MEDIAN                   1.6E+03       950.      0.000      0.000      0.004
 90TH PERCENTILE          4.9E+04      2570.      0.001      0.100      0.010
 MAXIMUM                  1.8E+05      2800.      0.001      0.600      0.014
 DATE OF MAXIMUM       1991-09-26 1992-01-16 1991-06-26 1992-09-23 1991-06-26
 STANDARD DEVIATION       4.4E+04       966.      0.000      0.132      0.004




                          PHENOLS    BENZENE
                                            
                            95011      95100
                             ug/L       ug/L


 NO. OF L-FLAGGED VALUES       16         17
 NO. OF G-FLAGGED VALUES        0          0
 NO. OF UNFLAGGED VALUES        0          4
 MEAN                         5.0        0.1
 MINIMUM                      5.0        0.1
 DATE OF MINIMUM       1991-03-07 1991-04-19
 10TH PERCENTILE              5.0        0.1
 MEDIAN                       5.0        0.1
 90TH PERCENTILE              5.0        0.2
 MAXIMUM                      5.0        0.3
 DATE OF MAXIMUM       1992-12-18 1991-11-21
 STANDARD DEVIATION           0.0        0.1





 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  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1992-01-28 TO 1992-12-17

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP          B   ORG CARB         CN
                             COND                  DISS       DISS           
                            02041      02061      05101      06101      06606
                            us/cm      deg C     mg/L B     mg/L C    mg/L Cn


 NO. OF L-FLAGGED VALUES        0          0          0          0          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       12         12         10         11         11
 MEAN                       4568.       13.2        0.7        9.0      0.011
 MINIMUM                    3150.        2.5        0.1        6.9      0.005
 DATE OF MINIMUM       1992-12-17 1992-01-28 1992-03-16 1992-01-28 1992-08-25
 10TH PERCENTILE            3240.        2.6        0.1        7.0      0.005
 MEDIAN                     4205.       12.5        0.7        9.1      0.011
 90TH PERCENTILE            5939.       20.3        0.8        9.9      0.015
 MAXIMUM                    6020.       22.0        0.9       11.5      0.018
 DATE OF MAXIMUM       1992-10-31 1992-08-25 1992-10-31 1992-10-31 1992-12-17
 STANDARD DEVIATION         1021.        6.7        0.2        1.2      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        0          1          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       12         11         12         12         12
 MEAN                      0.0053       14.0       0.56       4.38       8.10
 MINIMUM                   0.0014        0.0       0.24       0.67       5.39
 DATE OF MINIMUM       1992-01-28 1992-03-16 1992-01-28 1992-06-15 1992-09-22
 10TH PERCENTILE           0.0014        0.8       0.24       0.92       5.43
 MEDIAN                    0.0041       16.4       0.51       3.40       8.29
 90TH PERCENTILE           0.0088       20.2       0.86       7.64       9.95
 MAXIMUM                   0.0159       21.6       1.20       9.70      11.18
 DATE OF MAXIMUM       1992-04-22 1992-07-08 1992-07-08 1992-12-17 1992-03-16
 STANDARD DEVIATION        0.0043        6.8       0.30       2.69       1.79




                               O2        BOD        COD         pH   SUSP SOL
                             DISS                                     105 DEG
                            08101      08201      08301      10302      10401
                          mg/L O2    mg/L O2    mg/L O2   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       12         12         12         12         11
 MEAN                         2.6         3.        53.        7.5         6.
 MINIMUM                      0.9         2.        31.        7.1         1.
 DATE OF MINIMUM       1992-04-22 1992-07-08 1992-05-19 1992-12-17 1992-12-17
 10TH PERCENTILE              0.9         2.        33.        7.2         1.
 MEDIAN                       1.9         2.        50.        7.5         8.
 90TH PERCENTILE              3.0         5.        68.        7.6        10.
 MAXIMUM                     10.2         6.        73.        7.8        13.
 DATE OF MAXIMUM       1992-11-17 1992-08-25 1992-02-20 1992-08-25 1992-02-20
 STANDARD DEVIATION           2.5         1.        12.        0.2         4.




                                P   SULPHATE         Cl    P,P-DDT    O,P-DDT
                            TOTAL                  DISS                      
                            15405      16309      17203      18000      18005
                           mg/L P   mg/L SO4    mg/L Cl       ug/L       ug/L


 NO. OF L-FLAGGED VALUES        0          0          0         12         12
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       12         10         12          0          0
 MEAN                       1.709       322.      1455.      0.001      0.001
 MINIMUM                    0.130       246.        93.      0.001      0.001
 DATE OF MINIMUM       1992-03-16 1992-02-20 1992-05-19 1992-01-28 1992-01-28
 10TH PERCENTILE            0.278       246.       220.      0.001      0.001
 MEDIAN                     1.775       326.      1139.      0.001      0.001
 90TH PERCENTILE            2.212       355.      2099.      0.001      0.001
 MAXIMUM                    2.920       372.      4078.      0.001      0.001
 DATE OF MAXIMUM       1992-10-31 1992-09-22 1992-11-17 1992-12-17 1992-12-17
 STANDARD DEVIATION         0.703        37.       998.      0.000      0.000




                          P,P-DDD    O,P-DDD    P,P-DDE    O,P-DDE     ALDRIN
                                                                             
                            18010      18015      18020      18025      18130
                             ug/L       ug/L       ug/L       ug/L       ug/L


 NO. OF L-FLAGGED VALUES       12         12         12         12         11
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          0          0          1
 MEAN                       0.001      0.001      0.001      0.001      0.001
 MINIMUM                    0.001      0.001      0.001      0.001      0.001
 DATE OF MINIMUM       1992-01-28 1992-01-28 1992-01-28 1992-01-28 1992-01-28
 10TH PERCENTILE            0.001      0.001      0.001      0.001      0.001
 MEDIAN                     0.001      0.001      0.001      0.001      0.001
 90TH PERCENTILE            0.001      0.001      0.001      0.001      0.001
 MAXIMUM                    0.001      0.001      0.001      0.001      0.001
 DATE OF MAXIMUM       1992-12-17 1992-12-17 1992-12-17 1992-12-17 1992-12-17
 STANDARD DEVIATION         0.000      0.000      0.000      0.000      0.000




                           ENDRIN   DIELDRIN         Cr         Mn         Fe
                                                  TOTAL       DISS       DISS
                            18140      18150      24002      25104      26104
                             ug/L       ug/L    mg/L Cr    mg/L Mn    mg/L Fe


 NO. OF L-FLAGGED VALUES       12         12          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0         12         12         12
 MEAN                       0.001      0.001      0.006       0.29       0.38
 MINIMUM                    0.001      0.001      0.002       0.17       0.18
 DATE OF MINIMUM       1992-01-28 1992-01-28 1992-08-25 1992-04-22 1992-05-19
 10TH PERCENTILE            0.001      0.001      0.002       0.17       0.19
 MEDIAN                     0.001      0.001      0.005       0.30       0.38
 90TH PERCENTILE            0.001      0.001      0.009       0.35       0.51
 MAXIMUM                    0.001      0.001      0.010       0.40       0.58
 DATE OF MAXIMUM       1992-12-17 1992-12-17 1992-07-08 1992-10-31 1992-01-28
 STANDARD DEVIATION         0.000      0.000      0.003       0.06       0.12




                               Ni         Cu         Zn         As   COLIFORM
                            TOTAL      TOTAL       DISS       DISS      TOTAL
                            28001      29006      30104      33104      36002
                          mg/L Ni    mg/L Cu    mg/L Zn    mg/L As   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       12         12         12         12         11
 MEAN                       0.012      0.059      0.087      0.005    1.6E+05
 MINIMUM                    0.006      0.003      0.048      0.003    6.7E+03
 DATE OF MINIMUM       1992-09-22 1992-09-22 1992-05-19 1992-02-20 1992-05-19
 10TH PERCENTILE            0.007      0.004      0.051      0.003    6.8E+03
 MEDIAN                     0.012      0.014      0.082      0.005    5.0E+04
 90TH PERCENTILE            0.017      0.034      0.116      0.006    5.3E+05
 MAXIMUM                    0.018      0.554      0.139      0.007    6.0E+05
 DATE OF MAXIMUM       1992-10-31 1992-01-28 1992-11-17 1992-11-17 1992-07-08
 STANDARD DEVIATION         0.003      0.156      0.027      0.001    2.2E+05




                         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          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       11         11         12         11         12
 MEAN                       1970.       133.      0.001      0.236      0.007
 MINIMUM                      60.        10.      0.000      0.100      0.002
 DATE OF MINIMUM       1992-02-20 1992-04-22 1992-10-31 1992-02-20 1992-10-31
 10TH PERCENTILE              74.        13.      0.000      0.100      0.003
 MEDIAN                     1000.        60.      0.001      0.100      0.006
 90TH PERCENTILE            4830.       235.      0.001      0.390      0.009
 MAXIMUM                    6000.       500.      0.003      0.800      0.014
 DATE OF MAXIMUM       1992-11-17 1992-03-16 1992-07-08 1992-03-16 1992-08-25
 STANDARD DEVIATION         2051.       144.      0.001      0.216      0.003




                          PHENOLS    BENZENE
                                            
                            95011      95100
                             ug/L       ug/L


 NO. OF L-FLAGGED VALUES       12         10
 NO. OF G-FLAGGED VALUES        0          0
 NO. OF UNFLAGGED VALUES        0          2
 MEAN                         5.0        0.2
 MINIMUM                      5.0        0.1
 DATE OF MINIMUM       1992-01-28 1992-01-28
 10TH PERCENTILE              5.0        0.1
 MEDIAN                       5.0        0.1
 90TH PERCENTILE              5.0        0.3
 MAXIMUM                      5.0        0.5
 DATE OF MAXIMUM       1992-12-17 1992-05-19
 STANDARD DEVIATION           0.0        0.1




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Last updated: 2001-07-30