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This page contains all technical documents located within the entire Air Quality Bureau web site. Information is organized by topic and may be accessed quickly via the links provided below. If you are unable to locate the information you are looking for, a link to the appropriate contact information is provided within the header of each section. Technical Documents and Information
2007 - 2009 (PDF File) 2006 - 2008 (PDF File) 2005 - 2007 (PDF File) 2004 - 2006 (PDF File) 2003 - 2005 (PDF File) 2002 - 2004 (PDF File) 2001 - 2003 (PDF File) 1999 - 2001 (PDF File) 2009 (PDF File) 2008 (PDF File) 2007 (PDF File) 2006 (PDF File) 2005 (PDF File) 2004 (PDF File) 2003 (PDF File) 2007 - 2009 (PDF File) 2006 - 2008 (PDF File) 2005 - 2007 (PDF File) 2004 - 2006 (PDF File) 2003 - 2005 (PDF File) 2002 - 2004 (PDF File) 2000 - 2002 (PDF File) 2009 (PDF File) 2008 (PDF File) 2007 (PDF File) 2006 (PDF File) 2005 (PDF File) 2004 (PDF File) 2003 (PDF File) 2002 (PDF File) 2001 (PDF File) 2000 (PDF File) 1999 (PDF File) 2010 (PDF File) 2009 (PDF File) 2008 (PDF File) 2007 (PDF File) Iowa NAAQS Exceedances 2010 (PDF File) Iowa NAAQS Exceedances 2009 (PDF File) Iowa NAAQS Exceedances 2008 (PDF File) Iowa NAAQS Exceedances 2007 (PDF File) Iowa AQI Exceedances 2006 (PDF File) Iowa AQI Exceedances 2005 (PDF File) Iowa AQI Exceedances 2004 (PDF File) Iowa AQI Trends (PDF File) 2003 Visibility Data and Maps for Iowa and U.S. (PDF File) Fireworks Exceptional Event, Davenport, July 4th, 2008 (PDF File) Forms, Guidance and Technical Information
Forms, Guidance and Technical Information
Semi-Annual Monitoring Report & Annual Compliance Certification
Landfills and NSPS Applicability NEW! New Permit Requirements for Gasoline Bulk Plants NEW!
Stationary Internal Combustion Engines - New Requirements REVISIONS TO CONTRUCTION PERMIT EXEMPTION REQUIREMENTS (40 CFR Part 60, subparts IIII and JJJJ, 40 CFR Part 63, subpart ZZZZ)
Registration Forms Getting Started
PSD Guidance
Find Construction Permits
Grain Elevators
Country grain elevators, country grain terminal elevators or grain terminal elevators are classified as Group 1 facilities in 567 IAC 22.10(455B) if the potential to emit of the facility is less than 15 tons of PM10 per year. Owners or operators of Group 1 grain elevators are required to submit a registration form by March 31, 2008 for existing equipment. Click on the link below to check on the status of Group 1 registrations by facility and location. The list is updated weekly on Fridays. List of Group 1 Registrations (PDF File)
The Environmental Protection Commission adopted new grain elevator permitting rules on January 15, 2008. The rules will become effective on March 19, 2008. (See link below for copy) The rules modify requirements for certain types of grain elevators and feed mill equipment collocated at certain types of grain elevators. The rules define each type of grain elevator facility and specify for each type of grain elevator the permitting options, emissions calculation methodology, emissions reporting and record keeping, and best management practices for controlling air pollution. A new particulate matter emissions standard for bin vents located affected grain elevators was also established through amendments to subrule 23.4(7). Applicants must use the grain elevator PTE calculation tool to determine their group classification. A link to the calculation tool and user’s manual is included below. Affected owners or operators of grain elevators are required to submit a registration form or applicable permit application by March 31, 2008 for existing equipment. For Group 1 and 2 facilities, as defined in the rule, links to a registration form or a Group 2 permit application can be found below. Permit applications and instructions that can be used for Group 3 or 4 grain elevators, as defined in the rule, can be found here. Permit applications for unpermitted feed mill equipment must be submitted by March 31, 2008. Permit applications and instructions that can be used for feed mill equipment can be found at here. Links to documents with frequently asked questions about the grain elevator rules in general and for each group are included below. Permitting Exemptions
Form Packages and Information
Individual Construction Permit Forms
Construction Permit Templates
Data General Guidance
PSD Modeling Guidance
Prevention of Significant Deterioration and Title V Greenhouse Gas Tailoring Rule On May 13, 2010, the U.S. Environmental Protection Agency (EPA) issued a final rule that sets thresholds for greenhouse gas (GHG) emissions that define when permits under the New Source Review Prevention of Significant Deterioration (PSD) and title V Operating Permit programs are required for new and existing industrial facilities.
On December 29, 2009 EPA’s Mandatory Reporting of Greenhouse Gases Rule (MRR) became effective. The MRR requires facilities subject to the rule to report their GHG emissions directly to EPA starting with their 2010 GHG emissions data by March 31, 2011. Therefore, DNR will no longer require facilities to report GHG emissions to DNR. Approximately 100 Iowa Title V and ethanol plant facilities are estimated to be subject to the MRR. Please visit http://www.epa.gov/climatechange/emissions/ghgrulemaking.html to determine if your facility is subject to the MRR reporting requirements. A frequently asked questions document and presentation on the MRR have also been posted on this page under the heading "EPA Mandatory Greenhouse Gas Reporting Rule". If you have questions, please contact the EPA MRR hotline at 1-877-GHG-1188 or GHGMRR@epa.gov, or Marnie Stein of DNR at 515-281-8468 or marnie.stein@dnr.iowa.gov.
The Iowa Department of Natural Resources (DNR) Air Quality Bureau has developed a new guidance document for estimating greenhouse gas emissions from selected stationary sources. The document contains information on data sources, emission factors, and estimation methods that are consistent with the Intergovernmental Panel on Climate Change Good Practice Guidance, the Inventory of U.S. Greenhouse Gas Emissions and Sinks, the California Climate Action Registry's General Reporting Protocol, and EPA guidance. This living document will be updated periodically to incorporate new emission factors and methods as they become available. The document suggests appropriate emission factors and estimation methods; use of specific emission factors is not mandated. The Department has revised the Greenhouse Gas Emissions Estimation Guidance to remove Table 5.3 – Fugitive Refrigerant Loss. The table is used by the California Climate Action Registry's General Reporting Protocol to determine whether or not an air conditioning system is significant or de minimis for reporting. However, because the Iowa DNR currently does not have a de minimis reporting threshold, the table has been removed from the guidance as of 10/3/2007.
Construction Permit Application Assistance Starting on July 2, 2007, construction permit applications must include potential greenhouse gas emissions for the project. Applications received without this information will be considered incomplete and the permit(s) cannot be issued until the information has been received. Please note that the Linn County and Polk County air permitting programs are also subject to the same requirements. The following form (Form GHG) has been developed by the Department for the reporting of Greenhouse Gas Emissions for projects: Voluntary Greenhouse Gas Registry
Frequently Used Emissions Inventory Resources Fact Sheets and FAQs
Classification Lists
Listed below are several example calculations that can be used as reference when completing a Minor Source Emission Inventory. All calculations are provided as PDF files, so you will need to have Adobe Acrobat Reader in order to view them.
Listed below are several spreadsheets that can be used to submit emissions inventory information. These are all XLS files, so you will need to have Microsoft Excel in order to view them.
Listed below are several spreadsheets containing emission factors for the concrete batching, hot mix asphalt, and limestone crushing industries. These are all XLS files, so you will need to have Microsoft Excel in order to view them.
Listed below are several example calculations for Group 2 Grain Elevators that can be used as reference when completing the Minor Source Emission Inventory. All calculations are provided as PDF files, so you will need to have Adobe Acrobat Reader in order to view them. Potential emissions from all processes at Group 2 Grain Elevators should be calculated using the Grain PTE Tool calculations attached in the Iowa DNR Air Quality Construction Permit for Group 2 Grain Elevators. Actual emissions from all processes at Group 2 Grain Elevators should be calculated using actual throughput data from the applicable emission year.
Semi-Annual Monitoring Report & Annual Compliance Certification
Title V Emissions Inventory/Fee Payment Form Packages These forms are only required for facilities that have applied for a Title V operating permit. Instructions for completing each form is located in the Title V application instructions below.
Title V/Voluntary Operating Permit (VOP) Form Packages
Operating Permit by Rule for Small Sources (50%) Form Packages
Guidance Documents The following two tables list the 187 Hazardous Air Pollutants (HAP's) as defined by EPA. Many of the chemicals regulated as HAP's are also Volatile Organic Compounds (VOC's) because they have volatile and photoreactive properties. Some HAP's are also considered particulate matter (PM). To make this clearer we've added a column that indicates which HAP's are also classified as VOC's or PM.
This guidance document was developed by the DNR and a committee of representatives from Title V facilities (finalized on 4/14/1997; revised on 6/11/1997 and 6/18/2001). Its purpose is to provide staff and industry with guidance on how to determine what constitutes acceptable periodic monitoring which must be included in each operating permit, as required by 40 CFR Part 70. Operation & Maintenance (O&M) plans are sometimes required as part of a source's periodic monitoring. These are example O&M plans for different types of control equipment. It should be noted that these are generic O&M plans, and they may need to be modified to fit a specific source's needs.
This table identifies typical control efficiencies that would be achieved by different types of control equipment. It is used in reviewing Title V applications by comparing the applicant’s claimed control efficiency with the table’s value. These are conservative control efficiency values that are used in cases where the applicant has not provided further documentation to support a higher control efficiency (e.g. stack test data). Glycol ethers is one of 187 listed hazardous air pollutants, as defined by EPA. A frequently asked question the DNR receives is what compounds are included in the glycol ethers category. The guidance document listed below discusses this question, lists a few commonly reported glycol ethers, and refers to an EPA document for further information. This document is intended to increase the integrity of lead inventory data from point sources, provide several approaches to calculating lead emissions, and enhance awareness of what processes emit lead. Best Available Retrofit Technology (BART) Modeling
Iowa DNR MM5 Model Performance Evaluation: Simulation Year 2002
Iowa DNR MM5 Sensitivity Analysis Guidance Documents
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