Water System Design Manual
December 2009
Page 249
Group A Water System Type
Community
Nontransient
Noncommunity)
Transient
Noncommunity
Bacti/Coli Bacti/Coli
Bacti/Coli
IOCs IOCs
IOCs
VOCs VOCs
VOCs
SOCs SOCs
--
Rad --
--
·
Bacteriological/coliform (Bacti/Coli).
·
Inorganic chemicals (IOCs).
·
Volatile organic chemicals (VOCs).
·
Radionuclide tests.
·
Synthetic organic chemicals (SOCs); unless the source qualifies for a waiver,
exempting the source from analysis of all or a partial list of SOCs.
8.
Pumping should be followed by collection of recovery data until 95 percent recovery of
the pre-pumping static water level has been achieved. Recovery measurements should be
made in the same manner and at the same frequency as drawdown measurements. To
facilitate accurate recovery data collection, the water system should incorporate backflow
check-valve(s) that prevents water within the riser pipe from flowing back into the well
when the pump is shut off.
9.
When the pumping test is completed, the data should be compiled into a report and
submitted to DOH. The project report guidelines for a groundwater source of supply are
in Section 7.3 and Appendix F. Reporting guidelines specific to pumping tests include the
following:
a.
All data on pumping rates and water levels (including static water levels) from the
pumping test and recovery period, and appropriate graphical presentations of the data.
b.
The report should determine the following hydraulic parameters: transmissivity or
coefficient of transmissibility, hydraulic conductivity or coefficient of permeability,
and storativity or coefficient of storage
c.
A map and description (¼, ¼, Section Township Range) accurately indicating the
well location, as well as the land surface elevation to the nearest foot above sea level.
Address and parcel number should also be provided.
d.
Summary, conclusions, and recommendations regarding pump settings and source
reliability.
e.
A well construction report (well log) for the pumping well and all observation wells.
f.
Distance, to the nearest foot, from pumping well to all observation wells and a map
indicating all well locations.