SILVERTHORNE — It's back to the drawing board for Home Depot. The home improvement chain recently submitted a second concept plan to Silverthorne, but it was deemed incomplete by the town. Now the big-box retailer has six months to revise and alter the plan to correspond with Silverthorne's requirements.

The Home Depot chain wants to build a 100,000 square-foot store south of Interstate 70, near the outlet stores close to the base of the Dillon Dam. If approved, Home Depot will likely start building in 2011. The town must make three rounds of approvals before ground could be broken.

“It's in their court,” said town manager Kevin Batchelder at a town manager's coffee talk with the real estate community Thursday.

For a second town council approval, Home Depot's building concept must fit all of Silverthorne's building and design requirements. Yet, community development director Mark Leidal said there were 10 areas of concern in the recently submitted plan, including four incomplete requirements mandatory for the store's second draft.

According to Leidal, the most recent Home Depot plan had an Xcel energy easement issue, problems with a roof-top mechanical structure, and the town still needs an appraisal for the proposed land trade with Silverthorne. Home Depot representatives said they need part of Silverthorne's right-of-way for parking and landscaping, and they wanted to trade for it with land by the river.

A revised disturbance permit for wetlands on the building site was missing from the second plan too, Leidal said.

Silverthorne officials also require Home Depot to give them a revised analysis on how the big box store would impact town businesses, as well as town costs associated with servicing the building. This was not included in the plan version earlier this month.

“We've not sent it (the plan) to referral agencies or scheduled any meetings to review it,” Leidal said.

Caitlin Row can be reached at crow@summitdaily.com.