Representative Environmental Mining Project List

The following are brief synopses of several completed projects that represent only a fraction of the work performed by our professionals. AGS offers services for a wide range of environmental, geological, and natural resource needs. We employ a core staff of highly qualified professionals and we can also draw on a network of affiliated expert specialists and independent consultants. The structure of AGS is such that we can provide access to a large body of diversified professional expertise, knowledge, and experience which would normally only be available through a larger consulting firm with a much higher overhead.

Brooklyn Mine and Mill, Colorado - AGS performed a CERCLA (Superfund) removal action for the U.S. Forest Service at the Brooklyn Mine near Silverton, Colorado. This work included the excavation of 8,000 cubic yards of mine waste from steep slopes at an elevation of 11,000 feet. This material was excavated using 3 yard dragline, which was considered innovative by the USFS and allowed AGS to remove the waste rock from the steep slopes in a safe and cost-effective manner.

Carbonero Mill Tailings, Colorado - AGS conducted a review of the Engineering Evaluation/Cost Assessment (EE/CA)  and tailings characterization of the Carbonero Mill tailings, located near Ophir, Colorado for the USFS. AGS evaluated the alternatives for implementation of a long-term solution at the site.

Canyon Creek Abandoned Mine Assessment, Colorado -  AGS conducted an environmental assessment of hundreds of abandoned mine sites for environmental impact and selection for further remediation.

Howard Fork ARD Interception Study, Colorado - AGS was contracted by the Trust for Land Restoration to perform structural mapping to determine possible sources of water discharge from adits within a watershed. This included flow measurement monitoring and water sampling in conjunction with the EPA.

Ophir Valley AML Investigation, Colorado - AGS conducted a field investigation and risk assessments of nine mine sites near Ophir, Colorado for the USFS, including water sampling of discharging mine adits and waste rock sampling from mine dumps.

Peru Creek Brownfield Assessment, Summit County, Colorado - AGS conducted the first Brownfield Assessment project for abandoned mine lands in the U.S.  This included an initial Phase I inspection of over 300 mine features which ranked all of the mine sites by environmental risk; five mine sites were selected for detailed Phase II work which included mapping, mine waste sampling, adit water and stream sampling. AGS prepared reports for both Phase studies using a modified ASTM approach which allowed the project to be completed on time and within budget.