Services

Landfill Gas Management

Tetra Tech BAS has been providing turnkey landfill gas management services since 1984. Our Methane Gas Group features an integrated team of landfill gas engineers and environmental field technicians who can assist solid waste facility operators in all areas of their landfill gas management needs.

Services Provided:

Gas Migration Investigations
Health Risk Screening Analysis
Local APCD Permitting
NSPS Compliance
Title 27 Compliance
Landfill Gas Collection and Conveyance System Design
Landfill Gas System Treatment System Design
Landfill Gas System Construction Support
Landfill Gas System Start-up
Operation, Maintenance, and Monitoring
Landfill Gas-to-Energy Project Planning and Development

Example Projects:
	SR-85 Landfill - Phoenix, Arizona Prepared landfill gas management master plan, and designed first phase of landfill gas extraction and treatment system at a new landfill being developed by the City of Phoenix. The master plan calls for installation of the system in phases, and sizing the header and flare station to accommodate mid- to long-term LFG flow rates.
	Ox Mountain Landfill – Half Moon Bay, California BAS performed a design / build contract for the Lower Canyon Flare Station removal and replacement project. Included all engineering, permitting, design, construction, and engineering services to remove the existing Callidus and John Zink Flares, gas handling skid, and control panels, for replacement with two PEI Flares, gas handling skid, condensate drain lines, condensate injection lines, and pipe supports.
	Gas-to-Energy Evaluation – Tucson, Arizona Evaluated potential landfill gas to energy projects at two landfills owned by the City of Tucson. Prepared landfill gas generation estimates, evaluated available credits and incentives, examined options for beneficial use of gas, air permit considerations, and prepared economic proformas.
	Glendale Landfill – Glendale, Arizona Designed a landfill gas extraction and flare station to bring site into compliance with NSPS regulations. Prepared plans for phased implementation of the system, a master plan, provisions for expansion of the system into the northern half of the disposal area, and header extension into the northern expansion.
	Carson Marketplace – Carson, California Designing landfill gas design extraction and treatment system for major commercial and residential development being constructed at the Cal Compact Landfill. This includes design of landfill gas well field, conveyance piping, treatment system, and building protection measures to be installed at the site.
	Yucaipa Sanitary Landfill – Yucaipa, California Designed landfill gas extraction and treatment system to mitigate impacts to groundwater caused by landfill gas migration. Investigated existing site conditions, conducted landfill gas generation modeling, and pilot testing to identify the most cost-effective method of processing gas. Prepared plans and specifications for the landfill gas extraction header system, condensate management system, and treatment facility.
	Green Valley Landfill – Hong Kong Provided engineering and design services for expansion of flare facilities. Prepared equipment specifications, construction bid package, and developed operation and maintenance manuals. With the new flare, the LFG processing capacity, including existing installations, increased to 6,700 SCFM.