Quick and easy access to recreational privileges in Iowa, including hunting, fishing, and specialty licenses:
Purchase Your Licenses Online
Buy your Hunting and Fishing license online today! We offer multi-year packages and combos for whatever you need to stay licensed.
Support conservation in Iowa by buying a natural resource plate for your vehicle.
Make your online reservation for state park cabins, camping sites and lodges.
Iowa DNR Customer Service
Mon - Fri, 8:00am - 4:30pm CST
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The Compliance Unit, in cooperation with the DNR's regional field offices, is responsible for ensuring that industry, businesses, institutions and individuals are in compliance with state and federal air quality regulations. The Compliance Unit promotes compliance through cooperative and voluntary means, and initiates appropriate enforcement action when violations do occur.
The stack testing group’s responsibility is to guarantee the quality of emissions data and to use the data to determine compliance with emission limits. The data quality is assured through field test audits and reviewing test reports. The field audits consist of making sure the tester follows the correct methodology, approving on-site variations, ensuring the tested emission source is operating in an acceptable manner, and answering questions posed by the testing group and the facility. The report review verifies the test results by checking the calculations and lab analysis. A test summary will be generated and the compliance status of the emission point is determined.