Our support of the EPA’s National Aquatic Resource Surveys (NARS) provides a significant example of our experience with the chemical analysis of water samplesNARS is a large collaborative program between EPA, states and tribes to conduct a statistically-based survey of the status of the nation’s waters.  The nation’s lakes, rivers and streams, wetlands and coastal waters are sampled iteratively over a five-year period.  Over forty-five states participate in the program.  The EPA generates an assessment report of the environmental condition of the water bodies sampled in a given year. The chemistry data we provide is a major component of that determination.  Key highlights of our support for NARS are included below.

  • Provided analytical chemistry support for NARS since its inception in 2007 and analyzed 850-1050 water samples a year for the program. 
  • Analyzed 12 to 23 chemical constituents annually depending on the water bodies being sampled in a particular year (e.g., coastal waters, lakes, rivers), including nitrate, nitrite and total phosphorus. 
  • Completed analyses following a strict schedule of sample hold times. 
  • Prepared comprehensive database of results and QC/QA data for the EPA.
  • Prepared and maintained an EPA-approved laboratory quality assurance plan and 20 EPA-approved SOPs.
  • Documented analytical performance for NARS work in annual updates of Data Quality Summary Report (DQSR)
  • Managed and cross-trained staff to meet analytical, sample load, and technical expertise requirements
  • Maintained staff competency based on results of multiple proficiency testing studies; peer review of calibration, sample, and QC data; and critique of control charts.

Additional Projects

Training for First Responders and Field Staff

CSS technical experts prepare and deliver essential training and information addressing worker safety and environmental hazards.

Predictive Modeling/Spatial Planning, NY Bight

CSS designed and implemented this integrated data acquisition, data management, and statistical predictive modeling to select optimal wind farm locations while minimally impacting seabirds.

Analytical Support for the Drinking Water Emergency in Flint, Michigan

Helping 100,000 Residents Affected by Elevated Lead Levels in Local Water Supply Lead contamination found in the drinking water in Flint, Michigan had a catastrophic impact on the community and its residents. CSS supported EPA’s response to the crisis by providing mobile and fixed analytical laboratory services and data review.  Over a nine-month period, our…

Safety, Health, & Environmental

We provide our clients with tools to protect their workforce, the public, and the environment.

Earth & Space Science Support & Operations

We deliver scientific support to advance our clients’ research goals.

Human Health Risk Assessment

We help advance the understanding of chemical effects on people and the environment.

Emergency Preparedness & Response

We help our clients prepare for and protect the health and environment of communities after disasters and hazmat releases.

IT Services

Our IT solutions meet clients’ evolving needs.

Environmental Resource Assessment & Management

We apply science to address challenges affecting the nation’s natural resources.

Facilities Operations & Maintenance

We understand your facility support needs and deliver customized solutions.

Get in touch

Contact us to learn more about our projects, capabilities, solutions, and service offerings.