MCS was the prime contractor for Phase I. First a remedial
action management plan was prepared. In
May, 2005 MCS installed erosion control systems and
cleared and grubbed the 3-acre site. The physical
construction phase included: installation
of utility services; construction of permanent security
fencing; site grading; monitoring well abandonment;
excavation of a 150-ft Light Non-Aqueous Phase Liquids
(LNAPL) collection trench; and installation of a passive
LNAPL recovery system. The field work was completed
in May, 2005 and was followed by a 1-year O&M phase
to operate the LNAPL collection system and transport/dispose
of collected LNAPL. To meet project requirements, MCS
|
● |
abandoned or protected 20 groundwater monitoring wells and installed erosion control systems; |
● |
installed new roads and new water, phone, and electrical service and erected a concrete-foundation compressor building; |
● |
removed metal debris and an abandoned 5,000-gallon fuel tank; and |
● |
installed an LNAPL recovery system. |
MCS was a subcontractor to TN & Associates during
Phase
II. The services that MCS
provided during Phase II were design and construction
of a
dual-contained, pre-engineered metal building to house
the
LNAPL collection and groundwater recharge systems. This
included the installation of a 60-mil geomembrane beneath
the building to prevent landfill gas accumulation;
construction of five groundwater recharge trenches;
installation of perforated high density polyethylene
(HDPE)
landfill gas collection trenches; deployment of over
1,600 lf
of 4-inch by 2-inch, dual-contained, HDPE piping for
the
LNAPL collection and recharge systems.
|
