CDPHE - Colorado.gov/AirQuality

If this document is inaccessible in its current form, please contact APCD or CDPHE records office at (303) 692-3220 / cdphe.commentsapcd@state.co.us or the Nondiscrimination Coordinator at cdphe_nondiscrimination@state.co.us or 303-692-2102 to request a digitally accessible copy.

Si no es posible acceder a este documento en su forma actual, comuníquese con la oficina de registros de la División de Control de la Contaminación del Aire (Air Pollution Control Division, APCD) o del Departamento de Salud Pública y Medio Ambiente de Colorado (Colorado Department of Public Health and Environment, CDPHE) al (303) 692-3220 / cdphe.commentsapcd@state.co.us, o con el coordinador de no discriminación en cdphe_nondiscrimination@state.co.us o al 303-692-2102, para solicitar una copia accesible de forma digital.

All ATOPs monitoring data are public domain.
For questions/comments about any data, reports, or information shared here please reach out to: cdphe_apcd_atops@state.co.us.

National Air Toxics Trends Data & Reports

Reports
2016 CO National Air Toxics Trends Report [GJ_2016_NATTS_report_final_5-24-18.pdf] (6,234KB) (May 2018)
2015 CO National Air Toxics Trends Report [GJ 2015 NATTS report final.pdf] (5,353KB) (August 2017)
2014 CO National Air Toxics Trends Report [GJ2014AirToxicsReport.pdf] (5,463KB)
2013 CO National Air Toxics Trends Report [GJ2013AirToxicsReport.pdf] (9,200KB)
2012 CO National Air Toxics Trends Report [GJ2012AirToxicsReport.pdf] (9,062KB)
2011 CO National Air Toxics Trends Report [GJ2011AirToxicsReport.pdf] (1,888KB)
2010 CO National Air Toxics Trends Report [GJ2010AirToxicsReport.pdf] (1,918KB)
2009 CO National Air Toxics Trends Report [GJ2009AirToxicsReport.pdf] (1,576KB)
2008 CO National Air Toxics Trends Report [GRANDJunction 2008 Report_FINAL.pdf] (1,067KB)
2007 CO National Air Toxics Trends Report [GJ2007AirToxicsReport.pdf] (4,382KB)
2006 CO National Air Toxics Trends Report [GJ2006AirToxicsReport.pdf] (4,041KB)
2005 CO National Air Toxics Trends Report [GJ2005AirToxicsReport.pdf] (4,022KB)
2004 CO National Air Toxics Trends Report [GJ2004AirToxicsReport.pdf] (4,878KB)

Colorado Air Toxics Trends & Data Reports

Phase I of the program will be fully operational by January 1, 2024 with the first report expected by October 1, 2025. Findings from this report will be presented to the public in two outreach sessions to solicit comments on the monitoring program in June 2025. Phase II of the program will be fully operational by July 1, 2025.
Annual Reports
2024 Annual CDPHE Air Toxics Monitoring Data Summary Report - English [https://oitco.hylandcloud.com/cdphermpop/docpop/docpop.aspx?docid=52447950]
2024 Annual CDPHE Air Toxics Monitoring Data Summary Report - Spanish [https://oitco.hylandcloud.com/cdphermpop/docpop/docpop.aspx?docid=56667316]
Annual Data Packets
(note, these will be updated as data review and validation is completed)
2024 COATTS Data
Commerce City, Adams County Site: [2024_AnnualFile_ADCO_final.xlsx] (125KB)
La Salle, Weld County Site: [2024_AnnualFile_LSCO_v2.xlsx] (125KB)
Grand Junction, Mesa County Site Data: [2024_AnnualFile_GPCO_v2.xlsx] (126KB)

Oil and Gas Activity Monitoring Data & Reports

Oil & Gas Community Investigations [https://cdphe.colorado.gov/dehs/oghealth]
OGHIR Summary of Reported Concerns: [https://cohealthviz.dphe.state.co.us/t/EnvironmentalEpidemiologyPublic/views/OilGasPublicConcernDashboard/PublicDashboard?%3Aembed=y&%3AisGuestRedirectFromVizportal=y]
Reports from Colorado oil and gas community investigations are available. To request a report, please email cdphe_oghealth@state.co.us.
Oil & Gas Health Information Response Data (OGHIR)
08/2025 KPK Facility 8 Ft. Lupton, CO
Data Packet (AROMA and MET): [KPK_Facility8_Data_r1.zip] (7,182KB)
Summary Report (AROMA and MET): [KPK Facility 8 Report.pdf] (2,111KB)
04/2025 KPK Grant #1
KPK Grant Report: [KPK Grant VOC Data_r2.zip] (6,831KB)
11/2024 Platteville, CO:
Data Packet (SPOD): [Platteville Final data.xlsx] (11,036KB)
Summary Report (SPOD) [Platteville Report 11_2024 - 04_2025 .pdf] (1,760KB)
10/2024 Chevron Broe Kodak [Chevron_Broe_Kodak_Data_r1.zip] (29,705KB)
11/2023 PDC Ottesen [PDC_Ottesen_Data_r1.zip] (17,147KB)
12/2022 Crestone Civitas LoneTree [Crestone_Civitas_LoneTree_Data_r1.zip] (9,421KB)
06/2023 Commerce City North Denver Lorraine Granado [CCND_LorraineGranado_Data_r1.zip] (20,124KB)
08/2022 Cub Creek Knight [CubCreek_Knight_Data_r1.zip] (15,538KB)
07/2021 Commerce City North Denver Eagle Pointe [CCND_EaglePointe_Data_r1.zip] (812KB)
04/2021 CAMML VOC Statement of Errata [CAMML_VOC_Statement_of_Errata_20200429_English.pdf] (168KB)
04/2021 CAMML VOC Aclaración de Error [CAMML_VOC_Statement of Errata_20200429_Spanish.pdf] (29KB)
02/2021 Great Western Ivey [GreatWestern_Ivey_Data_r1.zip] (3,600KB)
10/2020 Extraction Vetting (Bella Romero) [Extraction_Vetting_Data_r3.zip] (23,835KB)
06/2020 Extraction Livingston [Extraction_Livingston_Data.zip] (33,698KB)
01/2019 Extraction Rinn Valley [Extraction_RinnValley_Data_r2.zip] (3,498KB)
09/2018 Great Western Dittmer [Great_Western_Dittmer_Data.zip] (457KB)
11/2017 Crestone Pratt [Crestone_Pratt_Data_r2.zip] (7,975KB)
06/2017 Crestone Waste Connections [Crestone_Waste_Connections_Data.zip] (690KB)
03/2017 Crestone Woolley Sosa [Crestone_Woolley_Sosa_Data.zip] (724KB)
Mobile Optical Oil and Gas Sensor of Emissions (MOOSE) Monitoring Data
Wastewater Injection Site Study
Expedition Water Solutions #6 (A123-A0C7): [EWS6_MOOSE_Data.xlsx] (151KB)
Expedition Water Solutions #14 (A123-7696): [EWS14_MOOSE_Data.xlsx] (86KB)
Conquest Disposal C1 (A123-9B89), Formerly NGL Water Solutions C1: [NGLC1_MOOSE_Data.xlsx] (142KB)
NGL Water Solutions C6 (A123-8008): [NGLC6_MOOSE_Data.xlsx] (150KB)

Fenceline Monitoring Data & Reports

Suncor - First report expected 04/2023
Facility Fenceline Monitoring Data [https://suncor.data.spectrumenvsoln.com/data]
Phillips 66 Terminal - First report expected 11/2024
Facility Fenceline Monitoring Data [https://phillips66denverfenceline.sensible-edp.com/Home]
Holly Energy Partners (Sinclair) Terminal - First report expected 11/2024
Facility Fenceline Monitoring Data [https://holly.data.spectrumenvsoln.com/]
Goodrich Corporation (Collins Aerospace) - First report expected 11/2024
Facility Fenceline Monitoring Data [https://goodrichpueblofenceline.sensible-edp.com/]

Community Air Toxics Monitoring Data & Reports

Mobile Community Air Toxics Data
Quarter 2, 2025 (Apr - June)
Suncor & Phillips 66 Terminal route
Quarterly Data Packet [2025_Q2_Commerce City-Suncor & Phillips 66.xlsx] (16,987KB)
Holly Energy Partners (Sinclair) Terminal route
Quarterly Data Packet [2025_Q2_N. Commerce City-HEP Terminal.xlsx] (16,155KB)
Goodrich Corporation (Collins Aerospace) route
Quarterly Data Packet [2025_Q2_Pueblo- Goodrich Corp. (Collins Aerospace).xlsx] (21,167KB)
Readme File [HB21-1189 Q2 2025 read me.pdf] (295KB)
Quarter 1, 2025 (Jan - March)
Suncor & Phillips 66 Terminal route
Quarterly Data Packet [2025_Q1_Commerce City-Suncor & Phillips 66.xlsx] (14,236KB)
Holly Energy Partners (Sinclair) Terminal route
Quarterly Data Packet [2025_Q1_N. Commerce City-HEP Terminal.xlsx] (15,022KB)
Goodrich Corporation (Collins Aerospace) route
Quarterly Data Packet [2025_Q1_Pueblo- Goodrich Corp. (Collins Aerospace).xlsx] (17,127KB)
Readme File [HB21-1189 2025 Q1 read me.pdf] (293KB)
Quarter 4, 2024 (Oct - Dec)
Suncor and Phillips 66 Terminal route
Quarterly Data Packet [2024_Q4_Commerce City-Suncor & Phillips 66.xlsx] (8,851KB)
Holly Energy Partners (Sinclair) Terminal route
Quarterly Data Packet [2024_Q4_N. Commerce City-HEP Terminal.xlsx] (9,380KB)
Goodrich Corporation (Collins Aerospace) route
Quarterly Data Packet [2024_Q4_Pueblo- Goodrich Corp. (Collins Aerospace).xlsx] (8,811KB)
Readme File [HB21-1189 Q4 2024 read me.pdf] (288KB)
Quarter 3, 2024 (July - Sept)
Suncor and Phillips 66 Terminal route
Quarterly Data Packet [2024_Q3_Commerce City-Suncor & Phillips 66.xlsx] (14,427KB)
Holly Energy Partners (Sinclair) Terminal route
Quarterly Data Packet [2024_Q3_N. Commerce City-HEP Terminal.xlsx] (10,318KB)
Goodrich Corporation (Collins Aerospace) route
Quarterly Data Packet [2024_Q3_Pueblo- Goodrich Corp. (Collins Aerospace).xlsx] (7,024KB)
Readme File [HB21-1189 Q3 2024 read me.pdf] (290KB)
Quarter 2, 2024 (Apr - June)
Suncor and Phillips 66 Terminal route
Quarterly Data Packet [2024_Q2_Commerce City-Suncor & Phillips 66_r2.xlsx] (9,962KB)
Holly Energy Partners (Sinclair) Terminal route
Quarterly Data Packet [2024_Q2_N. Commerce City-HEP Terminal_r2.xlsx] (8,739KB)
Goodrich Corporation (Collins Aerospace) route
Quarterly Data Packet [2024_Q2_Pueblo- Goodrich Corp. (Collins Aerospace)_r2.xlsx] (14,036KB)
Readme File [HB21-1189 Q2 2024 read me.pdf] (290KB)
Quarter 1, 2024 (Jan - Mar)
Suncor and Phillips 66 Terminal route
Quarterly Data Packet [2024_Q1_Commerce City-Suncor & Phillips 66_r2.xlsx] (12,014KB)
Holly Energy Partners (Sinclair) Terminal route
Quarterly Data Packet [2024_Q1_N. Commerce City-HEP Terminal_r2.xlsx] (12,876KB)
Goodrich Corporation (Collins Aerospace) route
Quarterly Data Packet [2024_Q1_Pueblo- Goodrich Corp. (Collins Aerospace)_r2.xlsx] (9,504KB)
Readme File [HB21-1189 Q1 2024 read me.pdf] (292KB)
Quarter 4, 2023 (Oct - Dec)
Suncor and Phillips 66 Terminal route
Quarterly Data Packet [2023_Q4_Commerce City-Suncor & Phillips 66_r2.xlsx] (6,862KB)
Holly Energy Partners (Sinclair) Terminal route
Quarterly Data Packet [2023_Q4_N. Commerce City-HEP Terminal_r2.xlsx] (7,327KB)
Goodrich Corporation (Collins Aerospace) route
Quarterly Data Packet [2023_Q4_Pueblo- Goodrich Corp. (Collins Aerospace)_r2.xlsx] (8,421KB)
Readme File [HB21-1189 Q4 2023 read me.pdf] (290KB)
Quarter 3, 2023 (July - Sept)
Suncor and Phillips 66 Terminal route
Quarterly Data Packet [2023_Q3_Commerce City-Suncor & Phillips 66_r2.xlsx] (7,964KB)
Holly Energy Partners (Sinclair) Terminal route
Quarterly Data Packet [2023_Q3_N. Commerce City-HEP Terminal_r2.xlsx] (6,777KB)
Goodrich Corporation (Collins Aerospace) route
Quarterly Data Packet [2023_Q3_Pueblo- Goodrich Corp. (Collins Aerospace)_r2.xlsx] (7,415KB)
Readme File [HB21-1189 Q3 2023 read me.pdf] (292KB)
Quarter 2, 2023 (Apr - June)
Suncor and Phillips 66 Terminal route
Quarterly Data Packet [2023_Q2_Commerce City-Suncor & Phillips 66_r2.xlsx] (5,890KB)
Holly Energy Partners (Sinclair) Terminal route
Quarterly Data Packet [2023_Q2_N. Commerce City-HEP Terminal_r2.xlsx] (6,915KB)
Goodrich Corporation (Collins Aerospace) route
Quarterly Data Packet [2023_Q2_Pueblo- Goodrich Corp. (Collins Aerospace)_r2.xlsx] (6,518KB)
Readme File [HB21-1189 Q2 2023 read me.pdf] (297KB)
Quarter 1, 2023 (Jan - Mar)
Suncor and Phillips 66 Terminal route
Quarterly Data Packet [2023_Q1_Commerce City-Suncor & Phillips 66_r2.xlsx] (6,390KB)
Holly Energy Partners (Sinclair) Terminal route
Quarterly Data Packet [2023_Q1_N. Commerce City-HEP Terminal_r2.xlsx] (6,693KB)
Readme File [HB21-1189 Q1 2023 read me.pdf] (289KB)
Stationary Community Air Toxics Monitoring for HB21-1189
ARS Ground-Based Air Toxics Monitoring Plan [CDPHE Air Toxics Monitoring Plan Rev0.pdf] (5,738KB)
December 2023
Monthly Summary Report [202312 SCATM Monthly Report.pdf] (1,094KB)
Monthly Data Summary [202312 SCATM Monthly Data Summary.xlsx] (464KB)
November 2023
Monthly Summary Report [202311 SCATM Monthly Report.pdf] (1,123KB)
Monthly Data Summary [202311 SCATM Monthly Data Summary.xlsx] (701KB)
October 2023
Monthly Summary Report [202310 SCATM Monthly Report.pdf] (1,143KB)
Monthly Data Summary [202310 SCATM Monthly Data Summary.xlsx] (726KB)
September 2023
Monthly Summary Report [202309 SCATM Monthly Report.pdf] (1,179KB)
Monthly Data Summary [202309 SCATM Monthly Data Summary.xlsx] (706KB)
August 2023
Monthly Summary Report [202308 SCATM Monthly Report.pdf] (1,178KB)
Monthly Data Summary [202308 SCATM Monthly Data Summary.xlsx] (674KB)
July 2023
Monthly Summary Report [202307 SCATM Monthly Report.pdf] (1,155KB)
Monthly Data Summary [202307 SCATM Monthly Data Summary.xlsx] (734KB)
June 2023
Monthly Summary Report [202306 SCATM Monthly Report.pdf] (1,137KB)
Monthly Data Summary [202306 SCATM Monthly Data Summary.xlsx] (721KB)
May 2023
Monthly Summary Report [202305 SCATM Monthly Report.pdf] (1,170KB)
Monthly Data Summary [202305 SCATM Monthly Data Summary.xlsx] (736KB)
April 2023
Monthly Summary Report [202304 SCATM Monthly Report.pdf] (1,122KB)
Monthly Data Summary [202304 SCATM Monthly Data Summary.xlsx] (777KB)
March 2023
Monthly Summary Report [202303 SCATM Monthly Report.pdf] (1,193KB)
Monthly Data Summary [202303 SCATM Monthly Data Summary.xlsx] (792KB)
February 2023
Monthly Summary Report [202302 SCATM Monthly Report.pdf] (1,227KB)
Monthly Data Summary [202302 SCATM Monthly Data Summary.xlsx] (609KB)
January 2023
Monthly Summary Report [202301_SCATM_Monthly_Report.pdf] (324KB)
Monthly Data Summary [202301_SCATM_Monthly_Data_Summary.xlsx] (655KB)

Ozone Precursor Monitoring Data & Reports

2023 CO Ozone Precursor Data [Raw CDPHE Precursor Summary_Data-2023.xlsx] (1,445KB) (November 2024)
2022 CO Ozone Precursor Data [Raw CDPHE Precursor Summary_Data-2022.xlsx] (1,511KB) (October 2023)
2021 CO Ozone Precursor Data [Raw CDPHE Precursor Summary_Data-2021.xlsx] (1,270KB) (October 2023)
2020 CO Ozone Precursor Data [RawCDPHEPrecursorData-2020.xlsx] (675KB) (April 2021)
2019 CO Ozone Precursor Data [RawCDPHEPrecursorData-2019.xlsx] (622KB) (November 2020)
2018 CO Ozone Precursor Data [RawCDPHEPrecursorData-2018.xlsx] (580KB) (February 2019)
2017 CO Ozone Precursor Data [RawCDPHEPrecursorData-2017.xlsx] (585KB) (May 2018)
2016 CO Ozone Precursor Data [RawCDPHEPrecursorData-2016.xlsx] (652KB)
2015 CO Ozone Precursor Data [RawCDPHEPrecursorData-2015.xlsx] (646KB) (May 2018)
2014 CO Ozone Precursor Data [RawCDPHEPrecursorData-2014.xlsx] (962KB) (May 2018)
2013 CO Ozone Precursor Data [RawCDPHEPrecursorData-2013.xlsx] (692KB) (May 2018)
2011 & 2012 CO Ozone Precursor Data [RawCDPHEPrecursorData-2011_2012.xlsx] (1,320KB) (May 2018)

Special Studies

Bishop - 2025 Study Galeton, CO
Data Packet (Pyxis and MET): [Galeton_Pyxis_VOC_Data_r3.zip] (2,456KB)
Data Packet (MOOSE): [Chevron Bishop A07-01 Pad Final Data.xlsx] (1,673KB)
Summary Report (MOOSE, Pyxis, SPOD July 2025 Report): [Galeton Report.pdf] (8,140KB)
Platte River Biogas - 2024/2025 Study La Salle, CO
Data Packet (EMU, mobile survey): pending
Summary Report (EMU February 2025 Report): pending
Data Packet (MARMOT, stationary deployment): [Platte_River_Biogas_Data_r1.zip] (28,541KB)
Summary Report (MARMOT Comprehensive Report, Dec 2024 - Jan 2025, Jun 2025 - Oct 2025): [Platte River Biogas Comprehensive Monitoring Data Report.pdf] (7,789KB)
Summary Report (MARMOT Winter Report): [Platte River Biogas Winter Report 12.18.24 - 01.16.25- Hour Averages.pdf] (4,202KB)
Data Packet (EMU, mobile survey): [PlatteRiverBiogas_EMU_20241216.xlsx] (879KB)
Summary Report (EMU December 2024 Report): [20241216_PlatteRiverBiogas_EMU_deployment_report.pdf] (1,037KB)
Data Packet (CAT, mobile survey): [PlatteRiverBiogas_CAT_20241030.xlsx] (617KB)
Summary Report (CAT October 2024 Report): [20241030_PlatteRiverBiogas_CAT_deployment_report.pdf] (862KB)
Magellan Dupont - 2024/2025 Study Dupont, CO
Data Packet (Pyxis/MET): [Magellan_Dupont_Pyxis_VOC_Data_r3.zip] (13,207KB)
Data Packet (MARMOT): [Magellan_Dupont_Data_r1.zip] (9,255KB)
Summary Report (Third Month): [Magellan Dupont Monthly Report 01.15.25 - 02.07.25.pdf] (4,717KB)
Summary Report (Second Month): [Magellan Dupont Monthly Report 12.18.24 - 01.14.25.pdf] (4,683KB)
Summary Report (First Month): [Magellan Dupont Monthly Report 11.19.24 - 12.17.24.pdf] (4,669KB)
Ethylene Oxide (EtO) - 2024 Study Lakewood, CO
Data Packet 2 [Winter 2024 ETO Study Data.xlsx] (66KB)
Data Packet 1 [Spring 2024 ETO Study Data.xlsx] (56KB)
Summary Report - pending
Ethylene Oxide (EtO) - 2018 Study Lakewood, CO
Data Packet [2018 ETO Study Data.xlsx] (25KB)
Summary Report [APCD_EtO_Air_Sampling_Report_Final11092018.pdf] (4,047KB)
Continuous Airborne Measurements and Analysis of Oil & Natural Gas Emissions During the 2021 Denver-Julesburg Basin Studies
Final Report [CU_UMD_2021_Final_Report.pdf] (5,379KB)
Executive Summary of Interim Report [airborne_measure_denver_julesburg_2021_report_executive_summary.pdf] (404KB)
Interim Report on Proposal Activities & No-Cost Extension Request [airborne_measure_denver_julesburg_2021_report.pdf] (8,192KB)
Flight Track [airborne_measure_denver_julesburg_2021_map_denver_julesburg_track.pdf] (752KB)
2020 Scientific Aviation Aerial Surveys (contact cdphe.commentsapcd@state.co.us for more information)
NCAR FRAPPE and DISCOVER-AQ Source Impact Analysis
NCAR FRAPPE and DISCOVER-AQ Source Impact Analysis- Report [FRAPPE-NCAR_Final_Report_July2017.pdf] (14,735KB)
NCAR FRAPPE and DISCOVER-AQ Source Impact Analysis- Appendix [FRAPPE-NCAR_Final_Report_July2017_Appendix.pdf] (13,625KB)
North Front Range Oil and Gas Air Pollutant Emission and Dispersion Study
North Front Range Oil and Gas Air Pollutant Emission and Dispersion Study - Report [CSU_NFR_Report_Final_20160908.pdf] (2,583KB)
North Front Range Oil and Gas Air Pollutant Emission and Dispersion Study - Data [NFR_Data_Public.zip] (1,103KB)
Air Emissions Case Study Related to Oil and Gas Development in Erie, Colorado 2012 [Erie Air Emissions Case Study 2012 - revised 11252014.pdf] (5,944KB)
Pueblo, Colorado Air Toxics Special Study Around the Rocky Mountain Steel Mill. May 2002 through December 2002. [PuebloAirToxics.pdf] (1,946KB)
2001-2002 Report of Urban Air Toxics In Denver.(Appendices available on request) [UrbanAirToxicsFinal.pdf] (3,716KB)
2002-2003 Report of Urban Air Toxics In Denver.(Appendices available on request) [DenverAirToxics2002-2003_final.pdf] (2,770KB)
Front Range Volatile Organic Carbon Trends Reports
Front Range VOC Data Review 1996-2006 [Front Range VOC Data Review 1996 - 2006.pdf] (6,840KB)
Grand Junction 2001-2002 Air Toxics Pilot Project Report. [GJ2002AirToxicsReport.pdf] (6,527KB)