Air Pollution Control Program
Our mission is to maintain the purity of Missouri's air to protect the health, general welfare and property of the people. The Air Pollution Control Program has more than six million customers. Whether an urban citizen or someone far removed from other people, everyone who lives in Missouri needs and deserves clean air.
The Department of Natural Resources is convening a workgroup to examine the state's odor regulations. This workgroup will examine the department's Air Pollution Control Program odor regulations to determine if changes are needed. This action is being done in response to a petition received by the Air Program and in response to concerns expressed by others about the regulations. Odor complaints typically are among the most common complaints received by the Air Program. The workgroup is composed of representatives from industry, environmental groups, regulatory agencies and other interested parties.
The last significant change to the odor regulations occurred in 1999 and brought Class IA Concentrated Animal Feeding Operations, or CAFOs, under the odor rules. The impetus for the change was the growing presence of large commercial animal agriculture operations in the state. The 1999 rulemaking was conducted through a workgroup process and put Missouri on the leading edge of addressing odor concerns from Class IA CAFOs.
List of Participants (02/14)
The Odor Workgroup concluded its efforts on June 26, 2007. The workgroup examined the state's existing odor regulations and discussed possible changes to those regulations. At the conclusion of the workgroup a final report was prepared detailing specific issues and possible courses of action. The final report is available below and a presentation was given at the Missouri Air Conservation Commission meeting on July 26, 2007, in Jefferson City.
The Missouri Air Conservation Commission, or MACC, continued their discussion of the state’s odor regulations at a commissioner’s workgroup on Feb. 6, 2008, and at their regularly scheduled meeting on Feb. 7, 2008. On Dec. 4, 2008, the commission requested staff to develop draft language to incorporate several elements. After receiving public input to finalize the rule language the commission adopted the proposed rulemaking on July 28, 2010. The rule became effective on November 30, 2010.
April 24, 2007
Odor Rule Stakeholder Workgroup Agenda. (04/18/07)
Dr. Mike Williams Presentation Part 1 (1 MB ) | Part 2 (1.2 MB )
Dr. Mark Fitch Presentation.
North Carolina State University. (Contains the report on environmentally superior technologies. Click on the environmentally superior technologies button to access the reports.)
- Final 1998 CAFO Workgroup Report to the MACC. (07/98)
- Ambient Odor Testing of Concentrated Animal Feeding Operations Using Field and Laboratory Olfactometers Study. (B. D. Newby and M. A. McGinley) >
- Petition from Citizens' Legal Environmental Action Network (CLEAN). (01/30)
- Letter from Attorney General's Office to the MACC. (01/30)
- A Review of National and International Odor Policy, Odor Measurement Technology and Public Administration. (SRF Consulting Group Inc.) (02/04) 2 MB >
Odor Investigation Results
This report is about the initial odor investigation designed to determine specific chemical elements in the nuisance odors experienced by citizens in Carthage to help in identifying the source or sources of odors. This first phase involved an innovative approach that combines evaluation of the odor by the human nose along with a chemical analysis. Don Wright of Microanalytics™, performed the initial phase of the investigation, which was funded by the department.
Odor Evaluation of Carthage Industrial Bottoms. (Nov. 25, 2007)
Note: Post submittal report correction received by Don Wright: Under Exhibit C, Representative Chromatograms, Chromatogram #2 should be labled as Upwind Reference instead of Downwind.
Notices of Violation for Odor
- St. Louis Area Notice of Violations.
- Kansas City Area Notice of Violations.
- Outstate Notice of Violations.
- Greene County Notice of Violations.
Leanne Tippett Mosby
The workgroup has engaged in a fair amount of discussion on how odors are investigated. There have also been some concerns raised about the large volume of complaints related to PSF that are not investigated individually. This issue was raised at the Missouri Air Conservation Commission and the Air Pollution Control Program provided the following information. A letter to the Washington University Interdisciplinary Clinic on the same subject is also listed.
Edward J. Heisel Submittals
- Public Health Concerns for Neighbors of Large-Scale Swine Production Operations. (K. M. Thu) >
- Quantification of Odors and Odorants from Swine Operations in North Carolina.
(Schiffman, Bennett, Raymer)
- Biofiltration of the Critical Minimum Ventilation Exhaust Air. (S.J. Hoff and J.D. Harmon-Iowa State University)
- 1,000 Olfactometry Analyses and 100 TD-GC/MS Analyses to Evaluate Methods for Reducing Odour from Finishing Units in Denmark. (M. Lyngbye, M.J. Hansen, A.L. Riis, T.L. Jensen and G. Sørensen, The National Committee for Pig Production, Danish Bacon and Meat Council, Copenhagen, Denmark)
- Biosystems and Agricultural Engineering Update - Biofilter Design Information. (Department of Bio-systems and Agricultural Engineering College of Agricultural, Food and Environmental Sciences)
- Odor Emission Reduction from Enclosed Growing-Finishing Pig House Using Different Biofilter Media.
Ken Midkiff Submittals
- Asthma and Farm Exposures in a Cohort of Rural Iowa Children. (Department of Occupational and Environmental Health, University of Iowa College of Public Health)
- School Proximity to Concentrated Animal Feeding Operations and Prevalence of Asthma in Students. (American College of Chest Physicians)
- National Association of Clean Air Agencies' Letter Regarding EPA’s Plan to Exempt Emissions of Air Pollutants from Manure from Reporting Requirements.
- 2003 Purdue University Study on Odor Assessment.
- Atmospheric Pollutants and Trace Gases - Odor and Gas Release from Anaerobic Treatment Lagoons for Swine Manure. (Teng-Teeh Lim, Albert J. Heber,* Ji-Qin Ni, Alan L. Sutton and Ping Shao) >
- Modeling Ammonia Dispersion from Multiple CAFOs Using GIS. (Jamie Cajka, RTI International (RTI); Marion Deerhake, RTI, Chengwei Yao, RTI) 1.5 MB
- Mercaptan, Amine and Fatty Acids Odor Binding Liquid.
- Volatile Fatty Acid Emission as a Measurement of Perceived Odor from Swine Waste Compost Amended with Sawdust.
- 2003 Swine Industry Day Report of Progress. (Kansas State University)
- North Carolina House Committee Agrees to Extend Hog Moratorium Through 2010. (The Charlotte Observer) DOC
Brian Newby Submittals
Results of the Iowa DNR Animal Feeding Operations Odor Study. (Iowa DNR Ambient Air Monitoring Group January 2006)
- Perspectives on the Public Health Effects of Concentrated Animal Feeding Operations. (Missouri Department of Health and Senior Services) DOC
- Concentrated Animal Feeding Operations (CAFO) Health Study and Information References. DOC
- Minnesota Public Health Assessment - ValAdCo Confined Livestock Operation. (Renville County, Minnesota, February 2003)
- Environmental Health Impacts of Concentrated Animal Feeding Operations: Anticipating Hazards--Searching for Solutions. (National Institute of Environmental Health Sciences, February 2007, Vol. 115 Issue 2)
- Health Effects of Airborne Exposures from Concentrated Animal Feeding Operations. (National Institute of Environmental Health Sciences, February 2007, Vol. 115 Issue 2)
Robert Brundage Submittals
History of North Dakota Odor Laws.
Missouri’s odor regulation can be accessed from the Code of State Regulations found on the Secretary of State’s website. The odor regulation is contained in Title 10, Division 10, Air Conservation Commission.
Specific regulation citation:
Chapter 6 - 10 CSR 10-6.165.
Adjoining State Information:
In the Definitions section, the definition of air pollution contains nuisance language
This links to a page from Colorado Department of Public Health and Environment describing the state's hog farm regulation.
This link takes you to the Kansas air pollution regulations. The first link from this page :"28-19 Kansas Air Quality Regulations" will open a pdf document. Section 28-19-13 on page 3 of Document (page 13 of pdf) describes nuisance.
This link takes you to the Oklahoma DEQ regulations. Air Pollution Control is the third link in the list. Provisions related to odor or language pertaining to nuisance were not found.
This links to Kentucky's ambient air quality standard. Kentucky includes odor in a secondary standard.
This links to Illinois EPA rules. Scroll down to Part 245 Odors.
Links to Arkansas Pollution Control and Ecology Commission. Scroll down to Regulation 18. Refer to Chapter 2, Definitions, definition of air pollution, which contains nuisance language. Also, Chapter 8, Section 18.801 contains a prohibition against air contaminants if the emission constitutes air pollution.
This links to Nebraska DEQ regulation. Click on Title 129, then Chapter 1. This contains the definition of air pollutant, which does not contain nuisance language. Also, I was unable to find any reference to odors.
This links to North Carolina Department of Environment and Natural Resources, Division of Air Quality regulation. You will find the industrial and animal agriculture specific regulations in the second column, third subheading, Control of Odors.
This links to Iowa DNR Air Quality Bureau page on Animal Feeding Operations. It contains information on the odor study conducted pursuant to a 2002 law passed by the Iowa legislature.
This links to Minnesota Pollution Control Agency odor policy.
This links to North Dakota's regulations. Their odor regulation is 33-15-16.