Documents & Reports
This page provides information on annual trends of atmospheric pollutant concentrations and deposition, quality assurance plans and reports, CASTNET annual network plans and assessments, and results from research studies conducted at CASTNET sites. For an overview of the CASTNET program you can access the factsheet here.
On this page:
- Annual Reports
- Quality Assurance Project Plan
- Quarterly Quality Assurance Reports
- Quarterly Data Reports
- Annual Network Plans
- Network Assessments
- Technical Systems Audit Reports
- Special Study Reports
- Historical Reports
Annual Reports
- Clean Air Status and Trends Network (CASTNET) 2021 Annual Report - 5/31/24
- Clean Air Status and Trends Network (CASTNET) 2020 Annual Report - 7/1/22
- Clean Air Status and Trends Network (CASTNET) 2019 Annual Report - 5/5/21
- Clean Air Status and Trends Network (CASTNET) 2018 Annual Report - 2/18/20
- Clean Air Status and Trends Network (CASTNET) 2017 Annual Report - 8/30/19
- Clean Air Status and Trends Network (CASTNET) 2016 Annual Report - 8/1/18
- Clean Air Status and Trends Network (CASTNET) 2015 Annual Report - 10/18/17
- Clean Air Status and Trends Network (CASTNET) 2014 Annual Report - 5/31/17
- Clean Air Status and Trends Network (CASTNET) 2013 Annual Report - 3/31/15
- Clean Air Status and Trends Network (CASTNET) 2012 Annual Report - 4/30/14
- Clean Air Status and Trends Network (CASTNET) 2011 Annual Report - 2/21/13
- Clean Air Status and Trends Network (CASTNET) 2010 Annual Report - 4/30/12
- Clean Air Status and Trends Network (CASTNET) 2009 Annual Report - 2/1/11
- Clean Air Status and Trends Network (CASTNET) 2008 Annual Report - 2/1/10
- Clean Air Status and Trends Network (CASTNET) 2007 Annual Report - 2/19/09
- Clean Air Status and Trends Network (CASTNET) 2006 Annual Report - 11/1/07
- Clean Air Status and Trends Network (CASTNET) 2005 Annual Report - 12/1/06
- Clean Air Status and Trends Network (CASTNET) 2004 Annual Report - 11/1/05
Quality Assurance Project Plan
- CASTNET QAPP v10.1 Main Body (pdf)
- CASTNET QAPP Appendix 1 Field SOPs (pdf)
- CASTNET QAPP Appendix 3 ARS SOPs (pdf)
- CASTNET QAPP Appendix 4 CASTNET Laboratory SOPs (pdf)
- CASTNET QAPP Appendix 5 CASTNET Health and Safety Plan (pdf)
- CASTNET QAPP Appendix 6 CASTNET Data Operations SOPs (pdf)
- CASTNET QAPP Appendix 7 Data Quality Objective Planning SOPs (pdf)
- CASTNET QAPP Appendix 8 CASTNET Quality Management Plan (pdf)
- CASTNET QAPP Appendix 9 Government Property Control SOPs (pdf)
- CASTNET QAPP Appendix 10 NCore Monitoring (pdf)
Quarterly Quality Assurance Reports
- CASTNET Quality Assurance Report - Second Quarter 2024 (pdf)
- CASTNET Quality Assurance Report - First Quarter 2024 (pdf)
- CASTNET Quality Assurance Report - Fourth Quarter 2023 (pdf)
- CASTNET Quality Assurance Report - Third Quarter 2023 (pdf)
- CASTNET Quality Assurance Report - Second Quarter 2023 (pdf)
- CASTNET Quality Assurance Report - First Quarter 2023 (pdf)
- CASTNET Quality Assurance Report – Fourth Quarter 2022 (pdf)
- CASTNET Quality Assurance Report – Third Quarter 2022 (pdf)
- CASTNET Quality Assurance Report – Second Quarter 2022 (pdf)
- CASTNET Quality Assurance Report - First Quarter 2022 (pdf)
- CASTNET Quality Assurance Report - Fourth Quarter 2021 (pdf)
- CASTNET Quality Assurance Report - Third Quarter 2021 (pdf)
- CASTNET Quality Assurance Report - Second Quarter 2021 (pdf)
- CASTNET Quality Assurance Report - First Quarter 2021 (pdf)
- CASTNET Quality Assurance Report - Fourth Quarter 2020 (pdf)
- CASTNET Quality Assurance Report - Third Quarter 2020 (pdf)
- CASTNET Quality Assurance Report - Second Quarter 2020 (pdf)
- CASTNET Quality Assurance Report - First Quarter 2020 (pdf)
- CASTNET Quality Assurance Report - Annual 2019 (pdf)
- CASTNET Quality Assurance Report - Third Quarter 2019 (pdf)
- CASTNET Quality Assurance Report - Second Quarter 2019 (pdf)
- CASTNET Quality Assurance Report - First Quarter 2019 (pdf)
- CASTNET Quality Assurance Report - Annual 2018 (pdf)
- CASTNET Quality Assurance Report - Third Quarter 2018 (pdf)
- CASTNET Quality Assurance Report - Second Quarter 2018 (pdf)
- CASTNET Quality Assurance Report - First Quarter 2018 (pdf)
- CASTNET Quality Assurance Report - Annual 2017 (pdf)
- CASTNET Quality Assurance Report - Third Quarter 2017 (pdf)
- CASTNET Quality Assurance Report - Second Quarter 2017 (pdf)
- CASTNET Quality Assurance Report - First Quarter 2017 (pdf)
- CASTNET Quality Assurance Report - Annual 2016 (pdf)
- CASTNET Quality Assurance Report - Third Quarter 2016 (pdf)
- CASTNET Quality Assurance Report - Second Quarter 2016 (pdf)
- CASTNET Quality Assurance Report - First Quarter 2016 (pdf)
- CASTNET Quality Assurance Report - Annual 2015 (pdf)
- CASTNET Quality Assurance Report - Third Quarter 2015 (pdf)
- CASTNET Quality Assurance Report - Second Quarter 2015 (pdf)
- CASTNET Quality Assurance Report - First Quarter 2015 (pdf)
- CASTNET Quality Assurance Report - Annual 2014 (pdf)
- CASTNET Quality Assurance Report - Third Quarter 2014 (pdf)
- CASTNET Quality Assurance Report - Second Quarter 2014 (pdf)
- CASTNET Quality Assurance Report - First Quarter 2014 (pdf)
- CASTNET Quality Assurance Report - Annual 2013 (pdf)
- CASTNET Quality Assurance Report - Third Quarter 2013 (pdf)
- CASTNET Quality Assurance Report - Second Quarter 2013 (pdf)
- CASTNET Quality Assurance Report - First Quarter 2013 (pdf)
- CASTNET Quality Assurance Report - Annual 2012 (pdf)
- CASTNET Quality Assurance Report - Third Quarter 2012 (pdf)
- CASTNET Quality Assurance Report - Second Quarter 2012 (pdf)
- CASTNET Quality Assurance Report - First Quarter 2012 (pdf)
- CASTNET Quality Assurance Report - Annual 2011 (pdf)
- CASTNET Quality Assurance Report - Third Quarter 2011 (pdf)
- CASTNET Quality Assurance Report - Second Quarter 2011 (pdf)
- CASTNET Quality Assurance Report - First Quarter 2011 (pdf)
- CASTNET Quality Assurance Report - Annual 2010 (pdf)
- CASTNET Quality Assurance Report - Third Quarter 2010 (pdf)
- CASTNET Quality Assurance Report - Second Quarter 2010 (pdf)
- CASTNET Quality Assurance Report - First Quarter 2010 (pdf)
- CASTNET Quality Assurance Report - Annual 2009 (pdf)
- CASTNET Quality Assurance Report - Third Quarter 2009 (pdf)
- CASTNET Quality Assurance Report - Second Quarter 2009 (pdf)
- CASTNET Quality Assurance Report - First Quarter 2009 (pdf)
- CASTNET Quality Assurance Report - Annual 2008 (pdf)
- CASTNET Quality Assurance Report - Second Quarter 2008 (pdf)
- CASTNET Quality Assurance Report - First Quarter 2008 (pdf)
- CASTNET Quality Assurance Report - Annual 2007 (pdf)
- CASTNET Quality Assurance Report - Third Quarter 2007 (pdf)
- CASTNET Quality Assurance Report - Second Quarter 2007 (pdf)
- CASTNET Quality Assurance Report - First Quarter 2007 (pdf)
- CASTNET Quality Assurance Report - Annual 2006 (pdf)
- CASTNET Quality Assurance Report - Third Quarter 2006 (pdf)
- CASTNET Quality Assurance Report - Second Quarter 2006 (pdf)
- CASTNET Quality Assurance Report - First Quarter 2006 (pdf)
Quarterly Data Reports
- Quarterly Data Summary for Second Quarter 2024 (April Through June) (pdf)
- Quarterly Data Summary for First Quarter 2024 (January through March) (pdf)
- Quarterly Data Summary for Fourth Quarter 2023 (October through December) (pdf)
- Quarterly Data Summary for Third Quarter 2023 (July through September) (pdf)
- Quarterly Data Summary for Second Quarter 2023 (April through June) (pdf)
- Quarterly Data Summary for First Quarter 2023 (January through March) (pdf)
- Quarterly Data Summary for Fourth Quarter 2022 (October through December) (pdf)
- Quarterly Data Summary for Third Quarter 2022 (July through September) (pdf)
- Quarterly Data Summary for Second Quarter 2022 (April through June) (pdf)
- Quarterly Data Summary for First Quarter 2022 (January through March) (pdf)
- Quarterly Data Summary for Fourth Quarter 2021 (October through December) (pdf)
- Quarterly Data Summary for Third Quarter 2021 (July through September) (pdf)
- Quarterly Data Summary for Second Quarter 2021 (April through June) (pdf)
- Quarterly Data Summary for First Quarter 2021 (January through March) (pdf)
- Quarterly Data Summary for Fourth Quarter 2020 (October through December) (pdf)
- Quarterly Data Summary for Third Quarter 2020 (July through September) (pdf)
- Quarterly Data Summary for Second Quarter 2020 (April through June) (pdf)
- Quarterly Data Summary for First Quarter 2020 (January through March) (pdf)
- Quarterly Data Summary for Fourth Quarter 2019 (October through December) (pdf)
- Quarterly Data Summary for Third Quarter 2019 (July through September) (pdf)
- Quarterly Data Summary for Second Quarter 2019 (April through June) (pdf)
- Quarterly Data Summary for First Quarter 2019 (January through March) (pdf)
- Quarterly Data Summary for Fourth Quarter 2018 (October through December) (pdf)
- Quarterly Data Summary for Third Quarter 2018 (July through September) (pdf)
- Quarterly Data Summary for Second Quarter 2018 (April through June) (pdf)
- Quarterly Data Summary for First Quarter 2018 (January through March) (pdf)
Annual Network Plans
- CASTNET 2024 Network Plan (pdf)
- CASTNET 2023 Network Plan (pdf)
- CASTNET 2022 Annual Network Plan (pdf)
- CASTNET 2021 Annual Network Plan (pdf)
- CASTNET 2020 Annual Network Plan (pdf)
- Response to Comments Received on the 2020 Draft Annual Network Plan (pdf)
- CASTNET 2019 Annual Network Plan (pdf)
- Response to Comments Received on the 2019 Draft Annual Network Plan (pdf)
- CASTNET 2018 Annual Network Plan (pdf)
- CASTNET 2017 Annual Network Plan (pdf)
- Response to Comments Received on the 2017 Draft Annual Network Plan (pdf)
- CASTNET 2016 Annual Network Plan (pdf)
- Response to Comments Received on the 2016 Draft Annual Network Plan (pdf)
- CASTNET 2015 Annual Network Plan (pdf)
- CASTNET 2015 Response to Comments Received on ANP (pdf)
- CASTNET 2014 Annual Network Plan (pdf)
- CASTNET 2013 Annual Network Plan (pdf)
- CASTNET 2012 Annual Network Plan (pdf)
Network Assessments
- ARS TSA Report – 2021 (pdf)
- Wood Response to Final TSA Report - 2018 (pdf)
- Wood TSA Report - 2018 (pdf)
- ARS TSA Report - 2017 (pdf)
- Amec Foster Wheeler Response to Final TSA Report - 2015 (pdf)
- Amec Foster Wheeler Final TSA Report - 2015 (pdf)
- ARS Response to Final TSA Report - 2013 (pdf)
- ARS TSA Report - 2013 (pdf)
- AMEC Response to Final TSA Report - 2012 (pdf)
- AMEC TSA Report - 2012 (pdf)
Special Study Reports
- Improving characterization of NHx at IMPROVE and CSN monitoring sites (pdf)
- Small Footprint Solar/Wind-Powered CASTNET System (pdf)
- Beaufort, NC (BFT142) NOy/NOX/NO2 and NH3 Report (pdf)
- Rocky Mountain Collocation Summary Report (pdf)
Historical Reports
- Cloud Deposition Monitoring Clingmans Dome, TN Great Smoky Mountains NP 2012 (pdf)
- Cloud Deposition Monitoring Clingmans Dome TN, Great Smoky Mountains NP 2011 (pdf)
- Cloud Deposition Monitoring Clingmans Dome, TN Great Smoky Mountains NP 2010 (pdf)
- Cloud Deposition Monitoring Clingmans Dome, TN Great Smoky Mountains NP 2009 (pdf)
- Cloud Deposition Monitoring Clingmans Dome, TN Great Smoky Mountains NP 2006 (pdf)
- Cloud Deposition Monitoring Clingmans Dome, TN Great Smoky Mountains NP 2004 (pdf)
- Eye on Air Quality Spring 2013 (pdf)
- Eye on Air Quality Winter 2013 (pdf)
- Eye on Air Quality Fall 2012 (pdf)
- Eye on Air Quality Summer 2012 (pdf)
- Eye on Air Quality Spring 2012 (pdf)
- Eye on Air Quality Fall 2011 (pdf)
- Eye on Air Quality Summer 2011 (pdf)
- Eye on Air Quality Spring 2011 (pdf)
- CASTNET Workshop Summary (pdf)