|
GFA, as a
subcontractor to EGR & Associates, has recently completed the
permitting, design and construction oversight of the Phase IVa expansion
of the disposal area at the Short Mountain Landfill.
Services that
were provided include: analysis of development options; preparation of a
site development plan; assistance
in obtaining regulatory agency approval for 90-acre lateral MSW landfill
expansion; development of
an engineering report which analyzes the proposed liner system, leachate
management and surface water control system; preparation of plans and
specifications for the construction of Phase IVa; preparation of a
construction quality assurance plan; contract management assistance; and
CQA certification.
The 90-acre expansion area had been previously used
for leachate irrigation and was at the start of the project classified
as wetland. The engineering design included dewatering of the wetland
and lowering the groundwater table beneath the expansion area to enable
less than 1-foot of head on the liner system to be maintained and
increase disposal capacity. Provisions within the design also provided
a method for leachate recirculation.
As a result of the project, Lane
County now has an additional 43 million cubic yards of disposal capacity
which at their current disposal rates translates into an additional 40
years of remaining life. |
