Alphabetically:

Covanta Energy: Biogas Products
Subsidiaries of Covanta Holding Corporation own and operate four biogas projects in California. The projects are located on landfills owned by 3rd parties. Each project generates electric power using methane gas recovered from landfills. The projects are comprised of a "collection system" (a series of gas wells interconnected by a pipeline system) that is connected to a "conversion system" consisting of compressors and internal combustion engines that drive electric generators. The electricity generated by these projects is sold to various California utilities.

Bioenergy Producers Association

California‚ biobased industries have united under the banner of the BioEnergy Producers Association to advance the development and commercialization of sustainable, environmentally preferable industries that produce power, fuels, and chemicals from agricultural, forestry, and urban sources of biomass and plastic wastes.

A major goal of the BioEnergy Producers Association is to promote the development of a comprehensive policy and constructive regulatory environment for bioenergy production in the State of California--initiatives that prioritize biobased industry growth, and further national biomass research and development policy objectives for energy security, pollution abatement, and rural economic development.

Department of Earth and Environmental Engineering, Columbia University
DEEE is dedicated to the environmentally conscious provision of primary materials (minerals, fuel, and water) to humanity and to the use of similar technologies for the management of wastes and land/water remediation.

Earth Engineering Center (EEC), Columbia University
The Earth Engineering Center (EEC) is the engineering unit of the Earth Institute at Columbia University. Its mission is to develop technologies that can help in the sustainable development of the Earth's resources: Minerals, energy, water, and the environment.

Earth Institute, Columbia University
The Earth Institutes overarching goal is to help achieve sustainable development primarily by expanding the worlds understanding of Earth as one integrated system. With 850 scientists, postdoctoral fellows and students working in and across more than 20 Columbia University research centers, The Earth Institute is helping to advance nine interconnected global issues: climate and society, water, energy, poverty, ecosystems, public health, food and nutrition, hazards and urbanization.

Energy Information Administration (EIA): Landfilling
Today's landfills are very different from the open dumps of the past. For one thing, new landfills are situated where clay deposits and other land features act as natural buffers between the landfills and the surrounding environment.

Energy Information Administration (EIA): Landfill Gas
Municipal solid waste contains significant portions of organic materials that produce a variety of gaseous products when dumped, compacted, and covered in landfills. An anaerobic bacterium thrives in the oxygen-free environment, resulting in the decomposition of the organic materials and the production of primarily carbon dioxide and methane. Carbon dioxide is likely to leach out of the landfill because it is soluble in water. Methane, on the other hand, which is less soluble in water and lighter than air, is likely to migrate out of the landfill. Landfill gas energy facilities capture the methane (the principal component of natural gas) and combust it for energy.

Energy Justice Network: Primer on Landfill Gas as "Green" Energy

"Landfill gas" is not the same thing as "natural gas" or "methane." They are three separate terms which mean different things. They should not be used interchangeably. The term "landfill methane" is deceiving as it's usually used to imply that landfill gas is simply methane.

Global Waste Management Symposium
The 2008 Global Waste Management Symposium (GWMS) served as a forum for the presentation of both applied and fundamental research and case studies on waste management. The entire community of designers, facility owners and operators, policy makers, and researchers participated.

Golder Associates: Waste Management - Landfill Technologies
The Golder Waste Management Team has provided services to the waste industry for 30 years, pioneering the use of geomembrane liners in the disposal of toxic mine wastes in the 1970s. Since that time, the Golder Team has helped companies implement the many evolving and current practices in the industry at more than 900 facilities. We work with clients to develop practical approaches that meet regulatory requirements and optimise their resources.

Green Conversion Systems LLC (GCS): Landfilling
Today the number one competition to Energy from Waste (EfW) is land filling. EfW and land filling compete in different areas and on different levels. One can differentiate between region, governmental regulations, political and public perception, and economic perception all on a local, state and/or nationwide level. Today's landfill practices incorporate state of the art landfill technology - however, when compared to GCS's Advanced Thermal Recycling (ATR) technology it is completely outdated.

Illinois Department of Public Health/Environmental Health Fact Sheet: Landfill Gas

 Most of the waste generated in the U.S. is disposed of in landfills. A modern landfill begins as a hole dug in the ground; it is lined with compacted soil or a man-made liner. As time goes by, the hole is filled and as more waste is added, the landfill often becomes a hill. When it reaches the point where it can take no more waste, the landfill is closed. A properly closed landfill contains a "cap" that limits water and moisture from seeping into it.

Landfill Methane Outreach Program (LMOP)

The U.S. EPA's Landfill Methane Outreach Program (LMOP) is a voluntary assistance and partnership program that promotes the use of landfill gas as a renewable, green energy source. Landfill gas is the natural by-product of the decomposition of solid waste in landfills and is comprised primarily of carbon dioxide and methane. By preventing emissions of methane (a powerful greenhouse gas) through the development of landfill gas energy projects, LMOP helps businesses, states, energy providers, and communities protect the environment and build a sustainable future.

Landfill Service Corporation (LSC)
Since 1990 Landfill Service Corporation has set the solid waste industry standard for Alternative Daily Cover (ADC), passive solar ignited landfill gas vent flares, and horizontal landfill gas extraction terminals.

Marcel Equipment Limited: Landfill Compactors

For over 32 years Marcel Equipment Limited has provided thousands of customers worldwide with our high quality, reconditioned, Caterpillar construction equipment, Caterpillar landfill compactors, earthmoving, and mining and forestry equipment.

Methane to Markets Partnership (Landfill Section)
Methane is a primary constituent of landfill gas (LFG) and a potent greenhouse gas when released to the atmosphere. Reducing methane emissions by capturing LFG and using it as an energy source can yield substantial energy, economic, and environmental benefits. The implementation of landfill gas energy (LFGE) projects reduces greenhouse gases and air pollutants, leading to improved local air quality and reduced possible health risks. LFG projects also improve energy independence, produce cost savings, create jobs, and help local economies. Internationally, significant opportunities exist for expanding LFGE.

National Solid Wastes Management Association (NSMWA)

NSWMA is a trade association representing for-profit companies in North America that provide solid, hazardous and medical waste collection, recycling and disposal services, and companies that provide professional and consulting services to the waste services industry. Founded in 1962, NSWMA™’s members operate in all 50 states and the District of Columbia.  Our members consist of large publicly-traded companies and both small and large privately-owned companies, all of which share NSWMA™’s mission statement which is to:

Promote the management of waste in a manner that is environmentally responsible, efficient, profitable and ethical, while benefiting the public and protecting employees.

NSWMA accomplishes this mission by providing our members with educational and training opportunities, research, and federal and state advocacy capability.

New York State Dept. of Environmental Conservation: Landfill Gas Recovery Facilities

Landfill gas is generated by the natural degradation of municipal solid waste by anaerobic micro-organisms. Landfill gas-to-energy projects control the migration of explosive gases, treat emissions and can offset tons of sulfur dioxide emissions which would be produced by fossil-fueled power generation. As of October 2008, there were 20 landfill gas recovery facilities operating in New York State. In 2007, these facilities produced approximately 434 million kilowatt hours of electricity. In addition, the Fresh Kills Landfill produced approximately 1,570 million cubic feet of high BTU/pipeline quality gas.

Renewable Energy Technologies: Landfill Gas to Energy

Renewable Energy Technologies provides project development services that generate clean energy and significantly reduce greenhouse gas emissions and carbon dioxide emissions. Included in this are our turnkey "ecogeneration" products and services which includes renewable energy technologies, waste to energy, waste to watts and waste heat recovery solutions. Other project development technologies include; Anaerobic Digester, Anaerobic Lagoon, Biogas Recovery, BioMethane, Biomass Gasification, and Landfill Gas To Energy, project development services.

SCS Engineers: Solid Waste - Landfill Engineering Services
Landfill engineering is the primary business of SCS. We have grown to become the # 1 ranked solid waste engineering firm in the country. We have conducted the full range of landfill and other solid waste facility-related study, design, and construction projects for county governments and private clients.

STI Engineering-Landfill Engineering
STI Engineering has been performing in-situ landfill investigations since 1984. We have developed a method to locate and profile gas pressure, liquid pressure and vacuum zones in landfills and in the vadose zone. The process involves the use of the side-sensing piezo-penetrometer cone (PPT) which is pushed into a landfill. The data is continuously recorded the full depth of the landfill and inputted into a computer. A 3-D profile of the conditions inside the landfill is created from this data.

Solid Waste Association of North America (SWANA): Landfill Gas
With a proven, groundbreaking 30+ year history in the field and over 400 subscribers, SWANA's Landfill Gas Management Division is widely recognized as the PREMIER authority on issues surrounding landfill gas (LFG) recovery, control, management, utilization, & system design, operation, and maintenance. With 11 standing committees, SWANA's oldest Division has taken a leading role in promoting the use of LFG as a sustainable and renewable energy source.

Solid Waste Association of North America (SWANA): Landfill Management
With over 600 members, SWANA's Landfill Management Division remains one of our largest and most active technical Divisions. Whether it's through industry-specific MOLO training or research and development initiatives on bioreactor technology, the Division's wide-reaching technical focus helps provide practical solutions to the multitude of issues and challenges concerning the planning, design, construction, closure, and post-closure care of today's landfills.

The Integrated Waste Services Association (IWSA)
IWSA was formed in 1991 to promote integrated solutions to municipal solid waste management challenges. IWSA encourages the use of waste-to-energy technology as an integral component of a comprehensive, integrated solid waste management program.

The Official Website of the Executive Office of Energy and Environmental Affairs
DOER is working with the Environmental Protection Agency's Landfill Gas Outreach Program (LMOP), the CONEG Northeast Regional Biomass Program, the Mass Department of Environmental Protection's Solid Waste Bureau and the Mass Department of Public Utilities' sitting board to evaluate the potential for C02 mitigation through the capture of and energy recovery of methane gas from landfills.

Veolia Environmental Services: Landfill Operations
Veolia Environmental Services operates, designs, constructs, and manages many regional landfills; all of which comply with the latest Federal, state, and local laws and regulations. Our landfills accept municipal solid waste, special waste, and construction and demolition waste. These landfills are equipped to handle both direct haul volumes and walking floor trailers.

Veolia Environmental Services: Stabilization and Landfill
Veolia operates a permitted facility in Wisconsin for the stabilization of metal-coded hazardous waste solids and the solidification of non-hazardous liquids and solids. Only chemical wastes that have been treated to meet applicable regulatory requirements are sent for disposal in company-approved secure disposal facilities. All approved landfill operations are sited, constructed and operated in a manner designed to provide the utmost in long-term containment of all such wastes.

Waste Connections Inc.

Waste Connections is an integrated solid waste services company that provides solid waste collection, transfer, disposal and recycling services in mostly secondary markets in the Western and Southern U.S. The Company serves more than one million residential, commercial and industrial customers from a network of operations in 23 states. We also provide intermodal services for the movement of containers in the Pacific Northwest.

Waste-to-Energy Research and Technology Council (WTERT)
WTERT is a top-tier-technical group that brings together engineers, scientists, and managers from industry, universities, and government with the objective of advancing the goals of sustainable waste management globally.

Waste Management (WM): Landfills
Waste Management's landfills utilize the latest advances in landfill technology to protect local ecosystems and ensure long-term integrity. A dedicated environmental steward, Waste Management ensures that all of our facilities are designed, operated and maintained to meet or exceed local, state and federal regulations.

Water Resources and Environmental Engineering, North Carolina State University
The Department of Civil, Construction, and Environment Engineering at North Carolina State University offers graduate programs leading to advanced civil engineering degrees with specialization in Water Resources and Environmental Engineering.

Wheelabrator Technologies Inc.: Ash Landfills
The Wheelabrator Putnam Ash Residue Landfill is a nine million cubic yard landfill designed to accommodate ash from all of Connecticut's waste-to-energy facilities. This project currently provides 400,000 tons per year of ash disposal for four of Connecticut's six waste-to-energy plants. The 186-acre site contains six 10-acre ash disposal cells designed to be built sequentially throughout its 25-year life. The remainder of the site is comprised of natural buffers, an administration building, a private access roadway and other supporting facilities.

The Wheelabrator Shrewsbury Residue Landfill is a three million cubic yard landfill designed to accommodate ash from Wheelabrator's Millbury waste to energy facility. Located on land leased from the Town of Shrewsbury, one of the original community customers of the Wheelabrator Millbury facility, this landfill will have provided over 25 years of reliable ash disposal to the Millbury project. The 270-acre site contains four 10-acre ash disposal cells built sequentially throughout its 25-year life. The remainder of the site is comprised of natural buffers, an administration building, a private access roadway and other supporting facilities.

Zero Waste America: Landfills
The U.S. has 3,091 active landfills and over 10,000 old municipal landfills, according to the Environmental Protection Agency. However, in the "good old days," every town (and many businesses and factories) had its own dump. According to the 1997 U.S. Census, there are 39,044 general purpose local governments in the United States - 3,043 county governments and 36,001 subcounty general purpose governments (towns & townships). One suspects that there are many more old and abandoned commercial, private, and municipal dumps than the 10,000 estimated by the EPA.