The Bethel Planning and Zoning Commission has approved a water tank Long Meadow Lane and Briar Cliff Manor.  The tank located in the woods of a residential area would be able to hold 500,000 gallons.  The approximately $1.8 million project is expected to be paid for with a state Department of Public Health loan, paid back by water customers.  The tank would provide water in the Chestnut Ridge area on peak days and during emergencies, such as a fire or water main break.  Some state and local approvals are still needed.