This page contains links to Data Reporting and Validation documents link to the main CSN Data Reporting and Validation page.
You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.- Chemical Speciation Network (CSN) Annual Quality Report Samples Collected January 1, 2018 through December 31, 2018 (PDF)(126 pp, 16 MB)
- Advisory: Carbon Analyzer Signal Integration Threshold Modified (PDF)(3 pp, 414 K)
- Advisory: Change in the XRF Analytical Protocol for CSN Samples (PDF)(4 pp, 283 K)
- Advisory: Calibration Bias in Reported Vanadium Concentration (PDF)(1 pg, 337 K)
- Chemical Speciation Network (CSN) Annual Quality Report Samples Collected January 1, 2017 through December 31, 2017 (PDF)(90 pp, 15 MB)
- Chemical Speciation Network (CSN) Annual Quality Report November 20, 2015 through December 31, 2016 (PDF)(95 pp, 7 MB)
- Advisory: Intermittent Contamination of Chromium and Nickel (PDF)(4 pp, 138 K)