Brookhaven Supervisor Mark Lesko said Monday that a report by the Town's Division of Fire Prevention found that a deliveryman mistakenly opened an unprotected valve.
The leak in the 30,000-gallon underground tank was fixed around 3 p.m. Saturday, about 14 hours after a propane delivery driver discovered it.
Stretches of the Sunrise Highway, Montauk Highway and some other major thoroughfares were closed in the area, and the Long Island Rail Road replaced trains with buses in the area for about 11 hours.
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