Sustainable Projects

WESTON was contracted to install a low-permeability earthen cap over former disposal areas at Barksdale Air Force Base in Louisiana to inhibit the infiltration of rainwater. Site grading was designed to promote drainage in order to protect groundwater quality. In addition, a vegetative cover was established to provide protection against erosion and off-site transport of sediment.

Sustainable construction methods were used in accordance with U.S. EPA guidance documents and Executive Order (EO) 13423. WESTON modified the original design so the natural levee could remain in place to provide habitat, minimize disturbance to the riparian ecosystem, and provide secondary erosion control during and following construction. The project achieved economic benefits totaling over $377,000.

Sustainable Benefits

• The closed landfill minimizes infiltration and protects groundwater quality.

• Maintaining the natural levee enhanced the natural habitat corridor.

• The grading plans were developed to re-create the natural drainage pattern to both the wetland and the Flat River.

• Removal of trees and shrubs was limited to the immediate work areas.

• Native wildflower instead of traditional grass cover resulted in an estimated economic savings of $11,250 per year and energy savings of 48 working hours and 120 gallons of fuel annually.