Wind developers and property owners are concerned that proposed fire safety requirements for wind farms in the Altamont Pass may be too costly. The matter will be discussed in a March 15 meeting, says Alameda County planner Darryl Gray. The issue was briefly raised in a February 9 meeting. Under the proposed new rules, turbines must be provided with a yaw damper or other approved method of preventing over-twisting of pendant cables. On existing turbines, if the machine has a history of twisting problems, a cable pendant sensor must be installed no later than May 15, state planners.