A city audit of Mayor Michael Hancock’s sustainability office has found it has no plan for measuring progress and achieving Denver’s 2020 environmental goals. And no plan means no accountability for city officials tasked with ensuring goals are met, according to a report Auditor Tim O’Brien made available Thursday. Denver’s 2020 goals include cutting greenhouse gas emissions, saving energy in city buildings, cleaning storm-water runoff, making neighborhoods nicer for walking, ensuring less than 10 percent of kids are obese and that 95 percent of Denver residents have access to medical care, using Colorado-grown food, and shifting transportation away from single-occupant vehicles. “Without the foundation of a mission, goals, strategies, performance measures, and performance information possible through a well-designed strategic plan, the Office of Sustainability is not optimally positioned to fulfill the leadership role to which it has been called,” O’Brien’s audit found.