Waterloo-Cedar Falls Courier: Deere & Co. has agreed to pay $1 million for violating air quality standards over a 12- to- 13-year period at its diesel-engine testing center in Cedar Falls. Deere officials say that the matter arose from past errors in air permitting and that they have taken corrective action. As part of a consent decree entered Thursday, The Iowa attorney general’s office said Deere has agreed to conduct annual environmental audits by a third party for at least three years and until they receive two consecutive audit reports with no or minimal violations.