If a flowing artesian well is not fitted with a pump and is normally used in an open discharge fashion, the test shall be conducted in the following manner:
- (1) The well shall be shut in for 16 hours prior to the test and the shut-in pressure recorded in the hour prior to the test.
- (2) The well shall be allowed to flow for a measured period of time of at least four hours, during which time the flow rate is to be measured and kept as constant as possible.
- (3) After the flowing period, the well shall be shut in and the pressure build-up recorded on the same schedule as described in OAR 690-217-0025(5) for water level recovery data collection in non-flowing well tests. Pressure build-up shall be recorded for four hours or until the pressure reaches 95 percent of the pretest shut-in pressure.
Statutory/Other Authority
ORS 537
History
WRD 25-1988, f. & cert. ef. 12-20-88