Projects

 

Over the years, GFA has been responsible for permitting, designing and/or construction of projects at over 25 landfills located throughout the western United States.  Some of the projects  GFA has been responsible for include:

 

 

 

		Finley Buttes Regional Landfill Boardman, Oregon (510 acres) - Assistance in obtaining DEQ approval for 100 million cubic yard vertical expansion; preparation of site development plan; preparation of alternative liner system analysis; preparation of alternative final cover analysis; preparation of fill sequencing plans;  design and construction of MSW refuse cells; design and construction of surface water and landfill gas collection and control system; and coordination of alternative earthen cover demonstration project.

 

Roosevelt Landfill Roosevelt, Washington (915 acres)- Preparation of moisture enhancement analysis that utilizes dredge spoils and leachate to increase biodegradation rates; preparation of alternative final cover analysis; design of two MSW lateral expansion areas and two incinerator ash disposal cells; preparation of fill sequencing plans; design of containment berm that enables dredge spoils to be contained and leachate recirculated on top of existing refuse cells; and CQA certifying engineer for over 75 acres of lined area.

 

Knott Landfill, Phase 11-B Expansion Bend, Oregon (135 acres) Assistance in obtaining regulatory agency approval for 135-acre MSW landfill expansion; surface and subsurface investigations; preparation of site development plan; design and construction of three MSW refuse cells; assistance in permitting of leachate recirculation system; design of surface water management system and preparation of closure plan.

 

St. Johns Landfill Portland, Oregon (220 acres)- Permitting, design and construction of 4,000 scfm landfill gas-to-energy project.

 

Short Mountain Landfill Eugene, Oregon (580 acres)- Assistance in obtaining DEQ approval for 43-million cubic yard MSW lateral landfill expansion; preparation of site development plan; preparation of plans, specifications, engineering report, and CQA plan for 18-acre MSW landfill expansion; preparation of fill sequencing plans; and preparation of plans, specifications and assistance during construction of leachate treatment building

 

Sunrise Park/ Obrist Landfill Closure Troutdale, Oregon

 

Anchorage Regional Landfill: Cell 1,2, and 3 Anchorage, Alaska (275 acres)- Assistance in obtaining regulatory agency approval for new 275-acre MSW landfill; preparation of comprehensive development plan; design and construction of first three refuse cells; preparation of final grading plan; design of landfill final cover and LFG control system.

 

 

Demolition Landfill Closure Bend, Oregon (52 acres)- Surface and subsurface investigations; permitting; preparation of landfill closure plan; design and construction of 18-acre closure area.

 

Furnace Creek Landfill Death Valley, California

 

 

West Hawaii Sanitary Landfill Waikoloa, Hawaii (300 acres)- Assistance in obtaining regulatory agency approval for new 300-acre MSW landfill; preparation of site development plan; surface and subsurface investigations; preparation of site operating plan; design and construction of first two refuse cells; preparation of final grading plan; design of landfill final cover, surface water management system and LFG control system.

 

Kekaha Landfill, Phase II Lateral Expansion Kauai, Hawaii (40 acres)- Assistance in obtaining regulatory agency approval for 40-acre MSW landfill expansion; preparation of site development plan: surface and subsurface investigations; design of 32 acre MSW landfill expansion; and preparation of fill sequencing plans.

 

Waimanalo Gulch Sanitary Landfill Oahu, Hawaii

 

Cathcart Sanitary Landfill Snohomish County, Washington