The proposed annexation of 779 acres in west Peachtree City is now officially under review by the Atlanta Regional Commission and the Georgia Regional Transportation Authority.

Developers John Wieland Homes and Levitt and Sons have submitted their second set of details to the agencies, triggering a brief review process to consider the regional impacts of the companies’ proposal.

Levitt wants to build 752 senior homes on a 400-acre tract that would leave 180 acres as open space.

Wieland wants to build 546 homes on a 379-acre tract and an additional 335 attached townhomes on a contiguous 79-acre parcel that’s already in the city limits along the CSX railroad tracks but is currently zoned for industrial use.

That adds up to 1,633 residential units on a total of 788 acres, a net density of 2.07 units per acre. The projected population of both projects combined is anticipated to be approximately 3,743 residents.

The developers have filed one single application with the regional agencies because combined they meet the threshold for review as a “development of regional impact.”

GRTA told the city last week that it could have a final decision on the development by Dec. 20, after which city staff would begin its review, said City Planner David Rast.

If Dec. 20 is the date GRTA’s decision is entered, the matter will likely be on the workshop schedule of the planning commission for both its meetings in January, followed by a public hearing to make a formal recommendation to council no earlier than February, Rast said.

That schedule is tentative, however, he indicated.

According to new information submitted to ARC, the development is expected to account for 870 automobile trips in the morning and 918 trips in the evening. Also, the development would use an estimated 400,000 gallons a day in water and generate 360,000 gallons a day of sewage.

Developers are predicting that the development will generate $751,000 a year in property and sales tax revenues. Although property tax revenues go directly to Peachtree City, the sales taxes are split with the county and other municipalities in a formula based on their population.

The developers have proposed extending MacDuff Parkway from its current terminus northward so it will connect with Ga. Highway 74 at the intersection with north Kedron Drive. A bridge over the CSX railroad will be necessary for that to be accomplished, but the developers would install it at no cost to the city.

Such a connection has been wished for by many who live off MacDuff, which currently has only one way of egress: off the newly-widened Ga. Highway 54.

Only 27 percent of the entire site will be developed with impervious surface, according to the developers.

The Fayette County Commission won a legal battle to preserve the two-acre minimum lot zoning for some of the land Wieland is requesting to annex. Pathway Communities, the previous land owner, lost its lawsuit which sought a rezoning to minimum lot sizes of one acre.