Iowa Admin. Code r. 567-63.16 - Sampling procedures for monitoring wells
The following steps shall be taken prior to monitoring well sampling.
(1) Measure depth from top of
well head casing to water table.
(2) Calculate quantity of water to be flushed
from well using the formula:
Gallons to be pumped = 0.221 d(squared)h, where:
d = well diameter in inches
h = depth in feet of standing water in well prior to pumping
(3) Pump
well.
(4) Measure depth from well
head casing to water table after pumping.
(5) Wait for well to recharge to or near
static water level prior to sampling.
Notes
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