- 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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Developing a Decontamination Line Guide for EPA Responders
CSS employee owners supporting the Environmental Protection Agency’s (EPA) Scientific and Technical Assistance for Consequence Management (STACM) contract have been working with the National Chemical Preparedness Workgroup and Sub Workgroups to create a decontamination (decon) line guide and detailed drawing for EPA on-scene coordinators and EPA’s special teams to use for emergency responses and incidents. The…
Hurricane Helene One Year Later: Shedding Light on the Impact
It’s been one year since Hurricane Helene caused catastrophic damage throughout the southern Appalachia region, especially Tennessee and North Carolina, where several rivers experienced above-record flooding. CSS employee owners (previously Riverside Technology, inc.) supporting NOAA’s National Centers for Environmental Information (NCEI) helped develop a Hurricane Helene StoryMap, Helene in Southern Appalachia, a dynamic tool that integrates diverse…
CSS Awarded Five Year Subcontract Supporting the Bureau of Engraving and Printing
For over 22 years, CSS has supported the Bureau of Engraving and Printing (BEP). Originally as a prime contractor, CSS began supporting BEP in 2002. In November 2024, a new prime contractor, Koniag, signed CSS as a major subcontractor, which enabled CSS employee owners to continue providing comprehensive environmental, occupational safety and industrial hygiene support…
