Frisco's vast 350-acre regional park that has been in the works for more than a decade could start construction next year, pending the approval of a permit and a cleanup plan.

Grand Park, located west of the Dallas North Tollway between Stonebrook Parkway and Cotton Gin Road, has been stalled for years by two major factors: the Army Corps of Engineers has not yet approved a permit for the park's 50-acre lake feature, and Stewart Creek, which runs through the future park, needs to be cleaned up from a shutdown battery recycling plant's contaminants.

The cleanup of Stewart Creek could happen soon with the recent approval of an amendment to a master settlement agreement between Frisco and Exide Technologies, the former battery recycling company.

The city is working to submit a cleanup plan of the creek to the Texas Commission on Environmental Quality this June, City Manager George Purefoy said at an April 11 Rotary Club of Frisco meeting.

The city is also working to submit a few more items to the Army Corps of Engineers related to the lake permit within the next four to six weeks, Purefoy said. If the permit is approved soon, the lake could begin construction in the next 12-18 months, and a chunk of grand park could begin construction in three to four years, he said.

Though Grand Park is planned to be about 350 acres, adding the land around Exide's former plant—across the toll road from Grand Park—could mean there would be 600 acres for community use at the heart of the city, Purefoy said.

"It's really going to be a great opportunity for Frisco to dedicate 600 acres right at the center of town for the public to use," he said.

Frisco City Council discussed at its winter work session revisiting Grand Park's master plan some time this year. The latest mater plan for the park was published in 2011.