Riverhead Town officials may vote next month on a site plan proposal for a three-story extension to Peconic Bay Medical Center.

The addition to the current facility at Roanoke Avenue would house space for a future emergency room, a cardiac lab, a helicopter pad, and a new intensive care unit with two connecting bridges, among other features.

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At a public hearing on the addition held during the Riverhead Town Board’s regular meeting Tuesday at Town Hall, Andrew J. Mitchell, president and CEO of Peconic Bay Medical Center, said the addition would help the hospital save lives.

According to Mitchell, 15 patients came through the hospital’s ER in November with heart attacks. Each of them had to be transferred to other facilities. By adding space for a cardiac lab, Mitchell said the hospital would be able to “change health care for the better” on the North Fork.

Riverhead Supervisor Sean Walter told Mitchell the project has his “100 percent support,” but added the hospital still needed to present the town with plans to alleviate any potential parking issues near the hospital before the plan’s approval. The parking subject was previously discussed at the board’s work session earlier this month.

Walter added he would try to have a board vote on the site plan approval ready for January. The proposal’s comment period ends Dec. 23.