× ×

Who We Are

× ×

About EA

× ×

Careers

× ×

Subcontractors/Suppliers

×

Mining Remediation

EA helps clients with the technical challenges unique to mining and smelter sites, including tailings investigations, composite covers, contaminated sediments, ecological and human health risk assessment, natural resource damages, cost-effective remediation alternatives, and beneficial reuse of the property.

Contact Us

Services

On behalf of government agencies, EA inventories, characterizes, remediates, and monitors abandoned hard-rock mine and mineral processing sites—addressing both risks to human health and the environment as well as minimizing and eliminating features that pose physical safety issues. Working closely with our government clients, EA conducts these activities with an emphasis on community involvement, environmental justice, and stakeholder coordination—ensuring that both ecosystems and communities are improved for the present as well as the future.

List of services with associated icons. Includes Mining Remediation; Environmental Sampling; Geochemistry; Hydrogeology; Remediation Design/Engineering; Environmental Justice; Construction Management; and Community Involvement

Key Contacts

Kim Nelson, P.G.
Senior Vice President, Director of Federal Programs
Email Kim

 

Sarah Babcock Headshot

Sarah Babcock, P.E., PMP
Vice President, Program Manager
Email Sarah

Let's Dig In

EA is an expert at addressing environmental contamination, with its adverse impact to human health, that exists today due to historical and now abandoned hard rock mining operations. Our extensive experience includes treating acidic water laden with heavy metals and addressing waste rock and tailing piles that are releasing substances such as arsenic, lead, and mercury into groundwater, surface water, and soil. We routinely monitor remedies after completion to ensure that they continue to achieve desired results.

Project Experience

A worker in waders putting on a hardhat before water that is tinted copper

Copper Bluff Mine

EA is supporting mine rehabilitation, geochemical investigation, and remediation to decrease acid mine drainage (AMD) from reaching a nearby river at this inactive copper, zinc, and gold mine. Our team is implementing an investigation of the adit and AMD discharge in preparation for rehabilitation work. EA prepared a UFP-QAPP, a HASP for both above- and underground work, a Technical Access Plan, Surface and Subsurface Mapping Plans, and a Soil and Water Chemistry Plan.

Colored standing water surrounded by rocks and steep, wooded slopes

Stibnite Yellow Pine Mining Area

On behalf of EPA, EA is providing oversight of the Potentially Responsible Parties’ remedial activities and removal actions including 3 stream diversion projects, removal of 325,000 tons of contaminated sediment and mine waste, slope stabilization, construction of onsite repository for mine wastes, and characterizing sources of contamination from former mine adits.

Colored soil and grass in the forground with steep slopes and pine trees in the background.

Bonita Peak Mining District

EA operates and maintains the interim water treatment plant, which was constructed to control ongoing releases of metal-laden water from the Gold King Mine. Tasks include performing site operational monitoring and sampling, sludge management, pond maintenance, and seasonal cleaning of the conveyance systems.

Aerial map showing a lake where a mine used to be located and colored areas showing contaminant plumes to the west.

Sulphur Bank Mercury Mine

EA is conducting a focused RI and providing community involvement support at this large, high-profile complex former mercury hard rock mining site. The RI is focused on providing an engineering evaluation and cost analysis for a non-time critical removal action to address portions of the Northwest Waste Rock Pile. The community involvement is focused on providing outreach and education regarding the fish consumption advisory for Clear Lake.

Two field workers on either side of a drill rig.

Argonaut Mine

To facilitate the cleanup of this historical hard rock gold mine, EA performed a CERCLA RI, prepared engineering evaluation and cost analyses, and is currently completing the engineering design of remedial actions including construction of drainage ditches and waste consolidation/disposal. Continuing our efforts, EA is developing a pilot-scale system, using in situ biofiltration swales, to treat mine tailing seepage.

open field with large area of mine tailings in the midground and mountains in the background

Iron King Mine

EA conducted an RI/FS at this 340-acre site and the accompanying abandoned smelter. Tasks included extensive environmental sampling and analysis, human health and ecological risk assessments, characterization of mine tailings and groundwater impacts, and associated contaminant transport. EA developed remedial alternatives, which included stabilization design for the tailings and provided agency coordination and community involvement.

EA’s breadth of experience includes toxicology evaluations, remedial actions, and community involvement support for:

  • Acid Generating Rock
  • Historic Structures
  • Alpine Access Roads
  • Open Pits
  • Ponds and Impoundments
  • Tailings and Waste Rock Piles
  • Adit Tunnels

Contact Us For More Information

 

×

Contact Us

EA Engineering, Science, and Technology, Inc., PBC headquarters
Name

×

Office Locations

View Map

Alaska

Anchorage

745 W 4th Avenue
Suite 425
Anchorage, AK 99501
Mike Jones P: 907-334-3909 Email Mike

Fairbanks

3544 International Way
Fairbanks, AK 99701
Travis Hines P: 907-646-0210 Email Travis

Arkansas

Fayetteville

700 Research Center Blvd
Suite 2221
Fayetteville, AR 72701
Matthew Frigon, PhD P: 479-575-2136 Email Matthew

California

Sacramento

555 University Avenue
Suite 182
Sacramento, CA 95825
Sheena Styger P: 916-604-4365 Email Sheena

Colorado

Denver

8055 E Tufts Ave, Suite 220
Denver CO 80237
Nathan Jones P: 303 590-9140 Email Nathan

Delaware

Newark

131 Continental Drive
Suite 203
Newark, DE 19713
Kathy Fox P: 302-467-3025 Email Kathy

Georgia

Warner Robins

108 Byrd Way
Suite 600
Warner Robins, GA 31088-9199
Tommy Bruhn P: 478-308-7375 Email Tommy

Guam

1001 Army Drive
Suite 103
Barrigada, GU 96913-1402
Billy Janasak P: 671-646-5231 Email Billy

Hawaii

Honolulu

615 Piikoi Street
Suite 515
Honolulu, HI 96814
Chip Brown P: 808-589-1455 Email Chip

Illinois

Chicago

444 Lake Cook Road
Suite 18
Deerfield, IL 60015
Joe Vondruska P: 847-945-8010 Email Joe

Maryland

Corporate Headquarters

225 Schilling Circle
Suite 400
Hunt Valley, MD 21031
Ian MacFarlane P: 410-584-7000 Email Ian

Ecotoxicology & Biology Labs

231 Schilling Circle
Hunt Valley, MD 21031
Michael Chanov P: 410-584-7000 Email Michael

Abingdon

1311 Continental Drive
Suite K
Abingdon, MD 21009
Scott Dobson P: 410-671-6051 Email Scott

Ocean Pines

11200 Racetrack Road
Unit A101
Ocean Pines, MD 21811
Darl Kolar P: 410-641-5341 Email Darl

Michigan

Brighton

10321 E. Grand River Ave.,
Suite 600,
Brighton, MI 48116
Arthur Peitsch P: 810-206-3042 Email Arthur

Montana

Helena

54 North Last Chance Gulch
Suite 14
Helena, MT 59601
Catherine LeCours P: 406-936-0022 Email Catherine

Nebraska

Lincoln

221 Sun Valley Blvd
Suite D
Lincoln, NE 68528
Dale Schlautman P: 402-476-3766 Email Dale

Omaha

7836 Wakeley Plaza
Omaha, NE 68114
Craig Johnson P: 402-817-7664 Email Craig

New Mexico

Albuquerque

320 Gold Avenue, SW
Suite 1300
Albuquerque, NM 87102
Jay Snyder P: 505-224-9013 Email Jay

New York

Marlboro

P.O. Box 144
25 Western Avenue, 2nd Floor
Marlboro, NY 12542
Melanie Dina P: 845-565-8100 Email Melanie

Oswego

82-B Creamery Road
Oswego, NY 13126
Sarah Nelson P: 315-342-1419 Email Sarah

Syracuse

Washington Station
333 West Washington Street, Suite 300
Syracuse, New York 13202
Bob Casey P: 315-431-4610 Email Bob

Rhode Island

Providence

301 Metro Center Blvd
Suite 102
Warwick, RI 02886-3440
Ron Mack P: 401-736-3440 Email Ron

Texas

Dallas

405 State Highway 121 (Bypass)
Building C, Suite 100
Lewisville, TX 75067
Roger Place P: 972-315-3922 Email Roger

Houston

11550 Cypress N Houston Rd
Cypress, TX 77429
John Bonner P: 832-912-4038 Email John

San Antonio

13750 San Pedro Ave.
Suite B10
San Antonio, TX 78232
Brian O'Ferrall P: 210-546-2129 Email Brian

Virginia

Virginia Beach

4429 Bonney Road
Suite 430
Virginia Beach, VA 23462
Chris Penny P: 757-693-6014 Email Chris

Washington

Seattle

2200 6th Avenue
Suite 707
Seattle, WA 98121
Jen Martin Bouchard P: 401-287-0376 Email Jen

EA Satellite Residential locations (Contact 1-800-777-9750)

Dunedin, FL

Rick Hanoski

North Salem, IN

Matthew Bowman

Dover, NH

Amy Hunt

Spencerport, NY

Caryn Kiehl-Simpson

Lubbock, TX

Danny Leaks