The grounds of a mixed-use project just north of the Washington Nationals’ ballpark will be cleansed of potentially hazardous contaminants before it is redeveloped — a sign of things to come as once-industrial land is recast into a new community.

McLean-based developer JPI submitted notice earlier this month that it would coordinate with the District to voluntarily remediate its property at 23 I St. SE, roughly three blocks north of the South Capitol Street stadium. JPI is planning a 12-story residential tower there with retail and underground parking, but first it must clear the land and groundwater of identified contaminants.