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 Kelli.Book@dnr.iowa.gov. However, the county board of supervisors must submit resolutions in January and DNR must receive it by the end of the day Jan. 31.