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. 

Trailer has instruments on top for monitoring air quality
WEAVE COM air quality monitoring trailer. 
View over a valley with a fog settled between the mountains
View overlooking San Joaquin Valley during a thermal inversion episode.

See More CSS Insights

split pane with 1-meter land cover data on left showing details of roads, buildings, creeks, and wetlands. 30-meter land cover data on right showing blocky colors that don't provide details.

New Heavily Desired High Resolution Land Cover Data for the U.S. 

The National Oceanic and Atmospheric Administration recently announced the launch of the long desired high-resolution coastal land cover data. This highly anticipated data are available for most coastal areas of the U.S., including Alaska and the U.S. territories.    CSS employee owners contributed to the release of this data set by participating in production activities and…

tractor trailers stationed in a parking lot

Emergency Response Support for the Republican National Convention

CSS employee owners on contract with the U.S. Environmental Protection Agency’s Portable High-throughput Integrated Laboratory Identification System — a mobile analytical unit known as PHILIS — provided emergency response support for the 2024 Republican National Convention. PHILIS mobile laboratory units are designed to provide onsite analysis of environmental conditions, including air and soil samples, contaminated…

Supporting Safety In Higher Education Laboratories

In the past two years we’ve expanded our safety portfolio to supporting colleges and universities, ensuring their laboratories meet industrial hygiene and safety standards. Our staff member leading the effort is a Certified Industrial Hygienist (CIH) and Certified Safety Professional (CSP), and member of the Remote Industrial Hygiene and Safety Support Team. Our short-term projects…