HB 1670 - This act removes the requirement that the Director of the Department of Natural Resources certify machinery, equipment, appliances, and devices used solely to prevent, abate, or monitor water or air pollution and any materials and supplies used in the installation, construction, or reconstruction of such machinery, equipment, appliances, and devices in order for purchases or leases of such equipment to receive a state and local sales and use tax exemption.JASON ZAMKUS