Intermediate Technology Consultants
- Provides advice to governments, NGOs, aid agencies and the private sector on services such as off the grid electricity, financing and integration of renewable energy, sustainable livelihoods and business development services.
- http://www.practicalactionconsulting.org/?id=itc_home

Hafer Environmental Services, Inc.
- Specializing in phase I ESAs, soil and groundwater investigations, remediation system design.
- http://home.comcast.net/~haferenv/

Landis, Inc.
- Providing environment restoration, economic development and wetland consulting services with environmental scientist, Dr. Barrett L. Kays. Located in Raleigh, North Carolina, United States.
- http://www.barrettkays.com/

Serafina Technical Consulting LLC
- Environmental engineering and technical consulting in air quality, emission inventories, permit application preparation, environmental assessment, transportation noise modeling, the Clean Water Act and storm water pollution prevention. Located in Serafina
- http://www.serafinatechnical.com/

Islands By Design, Ltd.
- Team of environmental consultants assisting with engineering design, environmental impact assessments and project management. Located in the Bahamas.
- http://www.islandsbydesign.com/

Environmental Remediation Services, Inc.
- A contracting firm providing environmental consulting, hazardous waste management, site remediation, emergency response services, and regulatory compliance. Based in Florida.
- http://www.ersfl.com/

GHD
- International company providing consulting services in management, engineering, environment -- including environmental impact assessment, contaminated lands, hydrogeology, and wastewater management -- and planning and design. Over 54 offices worldwide.
- http://www.ghd.com.au/

Bear Creek Environmental
- A multidisciplinary firm, located in Middlesex, Vermont, which provides consulting services in aquatic biology, geomorphology, erosion control, and water quality monitoring and assessments.
- http://www.bearcreekenvironmental.com/

ECODIT, Inc
- A worldwide environmental consulting company providing services in solid and hazardous waste management, water/wastewater management, pollution control, and prevention.
- http://www.ecodit.com/

Dr. Steven M. Hoffman and Associates
- Providing a full range of international, environmental, and Japanese-related consulting services, emphasizing interdisciplinary, innovative environmental solutions.
- http://www.hoffman-and-associates.com/

RSK ENSR Group PLC
- A diversified environmental consultant group. Operates internationally with offices located worldwide.
- http://www.rskensr.co.uk

Solutous Group
- Providing services for small to mid-sized companies for risk assessment, remediation, regulatory compliance, employee and safety programs, commercial software, and toxicology testing.
- http://www.solutous.com/

Delta Seven, Inc.
- Offering development planning, design, permitting, project management, ecological investigation, exotic plant control and eradication, lake management, mitigation area management, and diving services.
- http://www.Delta-Seven.com/

Lincoln Environmental, Inc.
- Provides services for management of risks related to hazardous materials. Includes project photos and related links. Located in New England.
- http://www.lincolnenv.com/

Mulry and Cresswell Environmental, Inc.
- Services include site investigation, remediation, soil and groundwater testing, regulatory interaction, and Phase I - IV site assessments.
- http://www.mcenvironmental.com/

Hawaii International Environmental Services
- Providing environmental and engineering services throughout the Pacific, Western US and Southeast Asia. From planning and permitting, site assessment, remedial design to remediation of contaminated sites. Also sells waste oil to energy heaters, boilers an
- http://www.hawaii.edu/abrp/hawaiiwp/hies.html

Water and Earth Science Associates
- Canada-based environmental sciences and engineering consulting group, providing services internationally, including air emission reporting, treatment wetlands design and construction, hydrogeology and hydrology, remediation and rehabilitation, waste manag
- http://www.wesa.ca/

TMTS Associates Inc.
- An engineering consulting firm specializing in combustion, air pollution control, solids handling, thermal desorption and the environment.
- http://www.mindspring.com/~tfmcgowan

Conor Pacific
- Environmental service and technology firm providing total solutions to a worldwide clientele. Site assessment and remediation, brownfield development, air quality services, and water and wastewater treatment. Offices in Canada, UK, and US.
- http://www.conorpacific.com/

Geoservice Environmental Consulting
- Birmingham, Alabama based association of environmental professionals providing environmental, geological, and engineering consulting services. Specializes in comprehensive environmental and industrial hygiene services.
- http://www.geoservice.net/

Chastain-Skillman Online
- Engineering firm that offers services in a wide range of areas, including Environmental Engineering, Hydrogeology, Industrial Hygiene, Environmental/Occupational Health & Safety, and Risk Assessment.
- http://www.chastainskillman.com/

R.M. Towill Corporation
- Hawaii-based consulting engineering, planning, survey business. Services include environmental site assessments and investigations in the hazardous materials and waste management fields.
- http://www.rmtowill.com/

Exponent, Inc.
- Describes environmental sciences consulting services, including ecological risk assessment, hydrology, water resources, stormwater management, sediment transport, wetlands, indoor air quality, and related fields. Offices in U.S. and Germany.
- http://www.exponent.com/practices/environmental/

CH2M Hill
- Offering a diverse range of environmental and engineering consulting services in the U.S. and internationally.
- http://www.ch2m.com/

O'Callaghan Moran & Associates
- Environmental Management for Business. Provide environmental consulting services to the public and private sector in Ireland, UK, Europe and US.
- http://indigo.ie/~ocm

ARCADIS Geraghty & Miller International
- Environmental consultancy offering services in contaminated land, waste management, remediation, audit, water, air, environmental management, and related fields.
- http://www.arcadisgmi.com/

The Forrestal Group
- Providing solutions for environmental problems - coast to coast. Specializing in consultation, appraisal, impact and class action research, litigation, and risk analysis.
- http://www.forrestal.net/

The Lexington Group
- Management consulting firm that specializes in environmental matters, including ISO 14000, in the United States and Latin America.
- http://www.lexgrp.com/

O'Brien & Gere
- Provides start-to-finish project services with engineering design, construction, contract operations, laboratory analysis, and manufacturing, internationally, from offices throughout the United States, and in Mexico, Puerto Rico and the United Kingdom.
- http://www.obg.com/

August Mack Environmental, Inc.
- Provides on-going environmental compliance in all areas of industry with a primary focus on the chemical, foundry and steel industries.
- http://www.AUGUSTMACK.COM/

ECUS
- Offers international environmental consultancy services. Describes expertise and experience in diverse areas including ecology, landscape design, engineering, EIA. Offices in UK and Chile.
- http://www.sheffield.ac.uk/~ecus/

Multinational Environment and Social Assessment Services (MESAS)
- MESAS is an association of independent consultants specializing in the environmental, social and cultural dimensions of major energy and water resource installations. Expertise includes projects to resettle and rehabilitate displaced populations, as well
- http://www.his.com/~mesas/

Golder Associates
- Global provider of geotechnical engineering, materials engineering, environmental restoration, environmental and socio-economic assessments, surface and underground mining geotechnics, surface and ground water management, waste management, and project ma
- http://www.golder.com/