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Other Services
EXPERT TESTIMONY
Several of Jehn Water Consultants staff have made numerous
appearances as expert witnesses in Water Court throughout Colorado
involving ground water, surface water, environmental issues, surface
and ground water rights, geophysical logging and ground water
modeling. Expert witness services have also been provided for
hearings at County Commissioner hearings, State agencies and the
Colorado State Legislature. Other appearances include expert
testimony in civil and federal courts in Colorado, Illinois,
Pennsylvania and Michigan. Several of Jehn Water Consultants staff
are qualified as expert witnesses in fields of ground water
hydrogeology , ground water rights, surface water rights,
environmental issues, water well design, geophysical logging, and
ground water modeling.
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WATER CONSERVATION METHODS
Many conservation efforts are hampered by the needs of diverse water
users. Jehn Water Consultants works with clients to identify areas
where water conservation can be identified for its water users and
to help protect the environment. A plan is developed whereby a
common understanding of existing water supplies and demands for a
client are identified, and areas where conservation may be used are
incorporated into the plan. These conservation efforts may include
reduction of irrigated areas, rebate programs, and encouraged use of
water saving devices.
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DEWATERING STUDIES AND DESIGN
OF DEWATERING SYSTEMS
Jehn Water Consultants, staff has designed and implemented
dewatering systems since 1985. We have completed or reviewed multiple dewatering projects in Colorado, including in the areas of Denver, Vail, Telluride and Snowmass. Our philosophy is to design cost
effective, efficient development removal systems that are site
specific. Depending on local hydrological conditions, the design
might be a passive, gravity dependent technique or an active pumping
system where water is diverted away from the structure into a storm
sewer, channel, or stream. For an active design, Jehn Water
Consultants recommends dual pumps with a back up generator, to
insure that dewatering will continue even with pump failures or
power outages.
In assessing the site, Jehn Water Consultants uses ground water
modeling programs to optimize the dewatering system. This computer
analysis saves costs in several ways: it reduces the number of data
points (monitor wells) required to determine local aquifer
parameters, it allows testing options to maximize efficiency of the
design, and it eliminates potential problems in the dewatering
system. Of particular interest, is the transmissivity of the aquifer
or water-bearing material. The aquifer properties need to be
determined in detail, to dictate the rate and volume of water that
must be removed.
Our services include any or all of the following:
- Assistance in acquiring appropriate State permits. These include a
dewatering permit for the temporary and
the permanent system and a discharge permit if the water is diverted
to a stream or other
conveyance which will lead to a stream.
- Testing and modeling the site specific details of the aquifer, which
could include hiring
a drilling company to drill appropriate holes for active testing of
the water bearing unit.
- Designing a system detailing the final analysis and design of the
dewatering system. If requested,
Jehn Water Consultants can assist in the management of the
construction of the dewatering system in order to insure that specifications are properly followed.
- Follow-up studies are
also recommended to insure that the system is operating as designed.
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GEOGRAPHIC INFORMATION SYSTEMS ANALYSIS
Geographic Information Systems or GIS is a tool that relates a
database to spatial data. GIS allows the user to take the numbers
and words from a database and plots them on a map. It allows the
user to view, understand, question, interpret, and visualize the
data in ways simply not possible in rows and columns of a database.
Jehn Water Consultants has been a leader in using GIS applications
in the water resources industry to relate aquifer thickness,
boundaries, amount of water and the geologic information from a
database to maps. Relating water resources information to a
geographic presentation provides an excellent tool in not only
interpreting water resources information, but presenting that
information to the public and in Water Court proceedings.
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