Field Filtering Versus Slow Pumping Study


Site                                  Riverside Plating  Date                                          01-Mar-94
Well Number                                     mw-li    Air Temp.
Depth to Water Before                              56.04 Bottom Of Well                                    66.73
Depth to Water After                                     Pump Rate                                         ,,
       Time                pH         Conductivity          Temperature          Turbidity      Dissolved Oxygen
       (min)                           (usem)   (usem/10     (degrees C)          (NTU)                (%)
                0                          733       73                 8.4             200.0                 97
                5                          733       73                10.2             200.0                102
                10                         734       73                10.4             200.0                106
                i5                         734       73                10.5             200.0
                20                         734       73                10.5             200.0
                25                         736       74                10.6             200.0
                30                         735       74                10.7             200.0
                35                         734       73                10.7             200.0
                40                         733       73                10.4             200.0
                4S                         735       74                10.4             200.0
                50                         735       74                10.5             200.0
                55                         735       74                10.6             200.0
                60                         734       73                10.6             200.0
                65                         735       74                10.6             177.5
                70                         733       73                10.8             153.5
                75                         733       73                10.8             134.0
                80                         734       73                10.7             109.1
                85                         735       74               10.8               87.2
                90                         734       73               10.8               70.9
                95                         735       74                10.8              57.0
              100                          735       74               10.8               48.0
              105                          735       74               10.8               39.0
              110                          733       73               10.8               34.7
              115                          736       74               10.8               27.4
              120                          735       74               10.8               21.9
              125                          734       73               10.8               18.2
              130                          735       74               10.8               14.9
              135                          735       74               10.9               13.5
              140                          734       73               10.9               12.5
              145                          734       73               11.0               11.0

              150                          736       74               11.1               10.0
              155                          737       74               11.0                9.1
              160                          734       73               11.0                8.3
              165                          736       74               11.0                8.2
              170                                     0                                   7.3
              175                                     0                                   8.0
              180   ________          _____           0__________________


ceo:rpmwllm3.wql