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

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Challenge CSS working alongside of the U. S. Centers for Disease Control characterized the extent of building contamination and subsequently determined that the entire 100,000 foot building and contents would need to be decontaminated. A novel method needed to be developed and implemented for cleaning the massive number of mail pouches, packages and artifacts destined…

Custom Software Engineering

CSS develops customized software solutions for NASA life sciences and energy management.

IT Support to NOAA Fisheries

Our IT services support included developing and integrating information management systems central to NOAA Fisheries’ management and protection of living marine resources and their habitats

Emergency Preparedness & Response

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

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.

IT Services

Our IT solutions meet clients’ evolving needs.

Human Health Risk Assessment

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

Environmental Resource Assessment & Management

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

Satellite Data Applications

Helping create a more environmentally sustainable, weather-ready, and secure nation through application of earth observation data  

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