On May 20, 1961, a new parkway was proposed by the LISPC to connect the Northern State Parkway to the proposed Caumsett State Park, the site of a wildlife refuge and arboretum. The parkway would be constructed as a northern extension of the Bethpage State Parkway, using filled land to traverse Cold Spring Harbor. It also required the condemning of a Standard Oil Company tank farm to avoid demolishing high-priced homes, which were to be taken via the three alternate routes proposed. In 1965, the LISPC proposed that the four-lane parkway wind through Cold Spring Harbor and enter the village of Lloyd Harbor. Three years later, however, the LISPC said all they proposed was a scenic and landscaped two-lane road in the future. Conservationists of the Caumsett estate worried that the plans were too vague; furthermore, they believed that Caumsett should not be turned into a major-use facility like that of Jones Beach State Park on the southern shore.