Forget about the ball field, the cannon and the amount of beach access for a moment.

The San Juan County Parks department has a new hurdle to scale as it searches for common ground and consensus — and a final plan — for the pending renovation of Lopez Island’s Odlin Park.

The department, according to Parks Director Dona Wuthnow, will be required to obtain a permit from the Army Corps of Engineers in order for the project to proceed.

That’s because the park area targeted for renovation lies within a federally designated flood zone, and a biological evaluation of the project’s impacts may also be required as part of that permit.

The need for an Army Corps permit came to light several weeks ago during a pre-application review of the project by the Community Development and Planning Department.

Though the renovation plan has yet to be finalized, Wuthow said that the project will be bound by a determination by CDPD that whatever improvements are made will take place in a flood-zone.

In addition, Parks will need a shoreline development permit and to hammer out a memorandum-of-understanding, subject to approval of the state Department of Archeology and Historic Preservation, that ensures the protection of any historic cultural resources which may be uncovered or disturbed by the renovation.

Meanwhile, Parks will unveil two renovation plans for consideration and feedback Wednesday at the Lopez Library. The two-hour open-house style meeting begins at 4:30 p.m.

Either option, Wuthnow said, will meet the goals that the department and the Parks Commission hoped to achieve, though in varying degrees and expense.

The two alternatives were crafted on the heels of several intense and spirited community meetings earlier this year, in which some islanders lobbied hard over the location of a World War II vintage cannon, donated to the island as a war memorial, and others raised concern about the park’s ball field, which is located on a wetland.

“The project design team listened to the concerns expressed at those meetings and we believe that the community will be pleased with the final plan,” Wuthnow said in a press release.

The $400,000 renovation is being funded with grants from the state and the county Public Facilities Financing Assistance Program, known also as the 2260 fund.

Goals of the renovation include expansion of the picnic and waterfront day-use area, reducing congestion by the beach and boat ramp and improving traffic safety, adding camping amenities and creating a new camping area that can host group activities, events and provide overflow space during the busy season.