Versions of Iowa Code 15A.1 - Economic development -- public purpose -- environmental protection and waste disposal requirements on LawServer 2023 Iowa Code 15A.1 – Economic development — public purpose — environmental protection and waste disposal requirements 2022 Iowa Code 15A.1 – Economic development — public purpose — environmental protection and waste disposal requirements. 2020 Iowa Code 15A.1 – Economic development — public purpose — environmental protection and waste disposal requirements. 2018 Iowa Code 15A.1 – Economic development — public purpose — environmental protection and waste disposal requirements. 2016 Iowa Code 15A.1 – Economic development 2009 Iowa Code 15A.1 – Economic development — public purpose — environmental protection and waste disposal requirements