Who We Serve

RES works with clients across the American landscape to streamline navigation of regulatory approval processes of the Clean Water Act and the Endangered Species Act and associated state and local regulations. RES’ ecological solutions have enabled permitting and regulatory compliance for hundreds of infrastructure and commercial development projects including road, turnpike, tollway and bridge construction, railway development projects,

New manufacturing plants and plant expansions, port and intermodal facilities, oil and gas development, pipeline construction and maintenance, mining expansions, LNG terminals, as well as renewable energy, and electrical transmission and distribution and residential development. RES provides water resource solutions for private commercial, federal, state, county, parish and municipal compliance at MS4s and for other infrastructure projects.

State, County and Municipal Agencies

Compliance with myriad environmental regulations is a daunting task for any project developer. States, counties, parishes and municipalities face exceptional scrutiny as they do their good works.

Government permittees can comply with Clean Water Act NPDES permits and reduce polluting nutrients to achieve or exceed TMDLs using green infrastructure, stream restoration and proven BMPs. RES provides these solutions directly and through P3 relationships.

Federal, State and County Roads and Tollways

Impervious surfaces including roads, highways, parkways and tollways create stormwater runoff that transports pollutants into our country’s wetlands and waterways. Compliance with state and federal regulations includes using environmental offsets created using natural, land-based solutions including changing agricultural practices within the watershed where the surface is developed.

Roads also cross streams, rivers and wetlands requiring compensatory mitigation where the resource is not avoided. Forest clearing for linear corridors may impact endangered or threatened species. RES provides ecological restoration and water resource solutions to address these challenges.

Renewable Energy

Wind and solar power projects cover the landscape where they produce sustainable energy to sate growing demand. Their project footprints often have unavoidable impacts to wetlands and their vertical, rotating components may affect a number of endangered, threatened or protected species.

Transport of the resulting power to waiting customers involves interstate linear corridors for transmission and distribution towers and facilities. Whether up in the air, or on the earth’s surface, RES ecological solutions are provided on a landscape scale to enable regulatory compliance with predictable, successful ecological outcomes.


Rail transports America’s goods and America’s people. In addition to maintenance of existing rail infrastructure, new rail projects often have linear corridor impacts and cross wetlands and waterbodies. Ecological impacts often require compensatory wetland, stream and habitat offsets, also called mitigation, to enable compliance.

RES is the nation’s leader in supplying ecological solutions for linear projects including rail.


Manufacturing plants and plant expansions apply large scale capital investment and have project footprints that often impact ecosystems including wetlands, streams and habitats. They have impervious surfaces that cause stormwater runoff.

These projects also are fed by corresponding linear projects including access roads, rail, electric transmission and gas, oil and product pipelines. RES specializes in developing ecological solutions to help large scale projects comply with environmental regulations including the Clean Water Act and The Endangered Species Act and associated state-specific regulations.


Oil, gas and product pipelines are linear corridor projects with a permanent and temporary right of way and associated temporary workspaces. After project alignment is optimized and impacts avoided and minimized, compensatory mitigation is applied to comply with required permits – for unavoidable impacts to wetlands, streams and endangered and threatened species habitats.

These projects are often multi-jurisdictional and are publicly-visible, increasing scrutiny for environmental compliance. RES has provided ecological solutions for local, intrastate and interstate pipelines including flowlines, gathering systems, laterals, trunklines across the county.

Oil & Gas

Increased regulatory agency scrutiny of oil and gas operators developing U.S. onshore resource plays has heighten operator awareness of regulatory and permitting processes. Company executives, EH&S managers, and resource play and asset managers alike are faced with wide-ranging perceptions of industry’s view of environmental issues.

The oil and gas industry complies with the Clean Water Act and the Endangered Species Act in its everyday operations across the American landscape. RES provides proactive project impact analysis and streamlines permitting process for field development activities. RES is the industry’s leading supplier of ecological solutions.

Commercial Development

Commercial development projects are often developed on concrete pads that are placed on the earth’s surface.

The direct permanent impact from the project footprint and from the roads to and from the project site all need to be environmentally compliant. RES supports commercial and residential developers by providing reliable, cost-effective ecological and water resource solutions to aid in permitting their projects.

“[RES] has offered me a tremendous way to monetize my land that I never thought was available. It has totally educated me on the process, dealt with me in a very professional manner, communicated with me every step of the way, and been a pleasure to deal with. I would have no reservations working with them in the future. ”

–Sandra Oxner, Landowner

Case Studies