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SERVICES

THE SOLID WASTE EXPERTS

THE SOLID WASTE EXPERTS

QUOTE

For subsurface investigations, permitting, monitoring and maintenance, GSI's professionals are the solid waste experts."

In the last few years, GSI has completed work on many landfill projects. These projects include the closure of one construction and demolition (C&D) landfill, the permitting and construction Quality Assurance operations on a second privately-owned C&D landfill, a laboratory program for the closure of a municipal solid waste (MSW) landfill, a geotechnical investigation for the expansion of a county C&D landfill and the encapsulation of a commercial landfill with a low permeability bentonite slurry wall. These follow on the heels of providing geotechnical engineering services for the largest proposed MSW landfill in the State of Kansas.

In support of landfill design and construction, GSI staff have provided subsurface investigations (borings, piezometer installation and monitoring well installation), laboratory analysis (grain size analysis, one dimensional consolidation, triaxial sheer testing, hydraulic conductivity testing, soil plasticity limits, specific gravity, and laboratory compaction characteristics) and geotechnical engineering services (slope stability, settlement analysis, and linear design parameters).

Beyond design and construction, GSI also provides the installation of methane gas extraction wells, repair and maintenance of monitoring wells, the investigation and Quality Control testing for leachate ponds, soil borrow source investigations, ground water monitoring programs, and post-closure monitoring programs.

For the permitting and Construction Quality Assurance (CQA) side, GSI has prepared Operating Plans and CQA Plans for C&D landfills and helped clients with the construction monitoring process. The monitoring programs included ground water sampling and analysis, carbon monoxide monitoring, verifying construction grades for new cells and landfill caps, providing a variety of laboratory testing for soil liner and cap quality control, and on-site testing services during construction.

GSI has professional engineers and construction quality control staff with many years of landfill experience who have worked extensively with soil caps and geosynthetic liner systems.

LANDFILL SERVICES

PERMITTING

CONSTRUCTION QUALITY ASSURANCE

GEOTECHNICAL ENGINEERING

GAS WELL INSTALLATION

GROUNDWATER MONITORING WELL INSTALLATION

POST-CLOSURE MONITORING