Walsh Environmental Scientists and Engineers, LLC provides a wide range of environmental consulting services to public and private sector clients domestically and internationally. With offices in Boulder, Denver, Colorado Springs, Grand Junction, Fort Collins, and Lakewood, Colorado, as well as Lander and Gillette, Wyoming, Walsh is uniquely positioned to complete projects throughout the Rocky Mountain region – including Colorado, Wyoming, New Mexico, California, Utah, Montana, Arizona, Nevada, Iowa, Nebraska, and Kansas.
Environmental Consulting Services
Our consulting services include permitting for renewable energy, oil and gas, and mining projects, as well as a variety of services to government and industry, including: engineering, remediation, ecological investigations and surveys, GIS/CAD, permitting and compliance, remote sensing and satellite imagery, site assessment, NEPA compliance, industrial health and safety, asbestos and lead-based paint consulting, and wildland fire management.
Science and Engineering
The Walsh team is comprised of scientists and engineers specializing in disciplines ranging from environmental science, industrial hygiene, ecology, biology, geology, chemistry, landscape architecture and hydrology to environmental, civil, mechanical, electrical, and industrial engineering.
Our team has provided environmental consulting services to federal, state, and local agencies, and to oil and gas, mining, renewable energy, and a variety of other clients since 1979.

Representative Walsh project sites
International Experience
Internationally, we work with energy and mining companies on exploration, production, and power generation projects in remote locations around the world. We have particular expertise in the rainforest environments of South America and Southeast Asia, using advanced GIS and remote sensing technologies. We also conduct site remediation projects overseas, with expertise in bioremediation and remediation of chlorinated solvents.
Mission
The scientists and engineers of Walsh Environmental are committed to sustainable economic development and the protection, preservation, and restoration of the natural environment. We provide science, engineering, and expertise to help our clients minimize the environmental, human health, and ecological impacts of their projects, while complying with the laws that govern their work.
Affiliates
Walsh Environmental’s family of companies includes firms located internationally with expertise in environmental consulting. More information is available on their websites:
Ecology and Environment, Inc. -- www.ene.com
Walsh Peru, S.A. -- www.walshp.com.pe
Walsh Ecuador -- www.walsh.ec
Gustavson Associates, LLC -- www.gustavson.com
Lowham Walsh, LLC -- www.lowhamwalsh.com