Or. Admin. Code § 690-217-0035 - Pump Test Specifications for Flowing Artesian Wells Without Pumps
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.
Notes
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