Black Butte Ranch Wellhead Protection / Contamination Susceptibility
This resort relies on wells to meet domestic and golf course irrigation
demands. Groundwater quality was of concern. NEWTON evaluated the soil
types, geological formations, well conditions and potential for hydraulic
connections between shallow and deep aquifers. NEWTON considered contaminant
sources and used the information from the evaluation to determine the
susceptibility of groundwater resources to organic compounds. The risk
was determined to be low.
Eagle Crest Resort – Potential for Wastewater Effects on Groundwater
Eagle Crest is expanding to accommodate increased recreation demand. Expansion
concerns include the potential impact the additional community septic
systems could have on groundwater and the Deschutes River, and the availability
of groundwater for water supply. NEWTON helped identify suitable land
for the septic system, and determined the soil and geological characteristics
of proposed 40-acre, septic disposal site. The investigation included
evaluating how the wastewater would migrate in the ground, based on test
pits excavated in an existing 6-acre resort drainfield. NEWTON determined
that geologic conditions provide natural protection for groundwater and
the river, and developed a monitoring program that satisfied DEQ requirements.
NEWTON also determined that geological conditions would not impact development
of the conveyance and waste disposal system. As an additional part of
the work, NEWTON investigated the availability of groundwater and the
degree of hydraulic connection between the aquifer and the Deschutes River.
NEWTON subsequently designed and installed a 1,500-gpm water-supply well
and assisted with the preparation of WRD permits for groundwater use.
WRD granted the permits, based on NEWTON findings and testimony that pumping
from the aquifer would have no significant impact on the Deschutes River.
Deschutes Valley Water District
Groundwater Susceptibility to Contamination
OHD & EPA Requirements/Mining Impacts
Evaluated the Opal Springs water source for the District, including geology,
hydrogeology; prepared report on susceptibility of source aquifer to contamination
to fulfill Oregon Health Division, Drinking Water Section requirements.