- Success Stories, Uncategorized
- Environmental Resource Assessment & Management
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 the wintertime when thermal inversions trap pollution. Instruments on the trailer measure criteria air pollutants, other airborne contaminants and the chemical composition of particulate matter. The mobile lab allows scientists to collect atmospheric data to fill in gaps between existing fixed air quality monitoring stations to help identify sources and types of atmospheric PM2.5. CSS staff helped set up the trailer at the deployment site, conducted daily quality control checks on multiple instruments, and supported instrument operations throughout the deployment.


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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.…

Rapid Reporting of a Close Call Incident
CSS Safety Protocols During a routine collection of waste, a container of white powder disintegrated without warning, causing the powder to spill and be expelled into the air. Thanks to CSS’s safety protocols and quick response, our Center for Disease Control waste disposal staff was able to assess the situation and respond to the chemical…

Responding to HazMat Spills
CSS supports several Centers for Disease Control and Prevention (CDC) campuses throughout the U.S. On-site CSS personnel are trained in hazardous material spill response and clean-up and provide this support within buildings and throughout campuses. As part of our contract with the CDC Hazardous Waste Program, CSS hazmat-trained employee owners are responsible for safely collecting,…