The Pella City Council this week voted to move forward with plans for the west generating plant stack extension project. The City was made aware of a need to extend the stacks at the diesel plant by the Department of Natural Resources in order to comply with air quality regulations. As a result, the height of the stacks will increase from 50 to 65 feet. Wietz Industrial LLC from Des Moines was awarded the contract which totals $483,000. Work is expected to be complete by March 1st of next year.