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Counties: Master Matrix sign-up is due Jan. 31

  • 1/27/2021 3:59:00 PM
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County supervisors who voted to use the Master Matrix by adopting a construction evaluation resolution (CER) must submit the resolution to Kelli Book, Iowa DNR, 502 E. Ninth St., Des Moines, IA 50319. Applications can be mailed, emailed to  However, the county board of supervisors must submit resolutions in January and DNR must receive it by the end of the day Jan. 31.

Sign-ups in January apply to construction permit applications for confinement feeding operations received from February 2021 through January 2022. For more information, search for master matrix on the DNR website at Or, check the Iowa State Association of Counties at