Alexandria mayoral candidates are squaring off about the environmental sustainability of the controversial waterfront plan, .
Alexandria Mayor Bill Euille is one of the strongest supporters of a plan that would increase allowable density at three sites along the waterfront. He dismisses criticism that the plan is a threat to the health of the Potomac River.
This week, former vice mayor and independent candidate Andrew MacDonald called the proposal a threat to the health of the river, especially in the wake of a because of pollution and development.
