- Success Stories, Uncategorized
- Environmental Resource Assessment & Management
Assessing Contamination in Abandoned Mines

CSS supports the Environmental Protection Agency with assessing contamination within abandoned mines. There are thousands of abandoned mines throughout the western United States. Many of these mines are leaching heavy metals into nearby streams or have contaminated soils causing vegetation die off.
CSS employee owners conduct field work to assess the extent of this contamination. During field excursions, staff collect soil and water samples and characterize the extent of contamination. The team analyzes sample on site and in the laboratory for heavy metals. This information informs remediation plans for contaminated sites.
Feature image credit: Peter Robbins, Unsplash
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Monitoring Air Quality in California’s San Joaquin Valley
CSS employee owners supported the deployment and operation of the U.S. Environmental Protection Agency (EPA) air quality monitoring trailer (WEAVE COM – Western Enhanced Air quality VEhicle for COmmunity Monitoring) in California’s San Joaquin Valley in during late fall and early winter of 2024. Elevated particulate matter (PM2.5) is frequently found throughout the valley during…
Remediating Soil Surrounding Abandoned Mines
CSS employees have been providing field, lab, and horticultural support for the Environmental Protection Agency’s efforts to develop and test methods for the remediation and revegetation of contaminated soils around selected abandoned mines in the western United States. One of the promising approaches is to incorporate biochar into the soil. Using biochar helps effectively adsorb trace metals and reduce their…
Webinar Support for Emergency Chemical Release Response
Our staff assisted the EPA team in developing the webinar event, acted as moderator, and provided technical support.
