Despite pushback from about 80 environmentalists and other residents, the Orange County Water District board Wednesday approved an updated term sheet for buying water from the proposed Huntington Beach ocean desalination plant. The 6-2 vote established the terms for a contract if plant builder Poseidon Water receives final permits necessary from the Regional Water Quality Control Board this year and the California Coastal Commission next year. It also increased its project study budget from $320,000 to $370,000 to hire consultants to help evaluate different aspects of the proposal. Board members Roger Yoh and Bruce Whitaker dissented, James Vanderbilt abstained and Philip Anthony was absent.