NW Natural says its crews began the process this morning of restoring gas service to about 1,500 customers in White Salmon-Bingen, and expects to start a process for about 4,000 customers in the Hood River Valley on Wednesday that could take several days.  A statement from the company this morning said the restorations will occur in a phased approach as it works with Williams NW Pipeline, which is repairing damage to its district regulator station after a vehicle crashed into it late Sunday night, leading to the shutdown of its gas line.  NW Natural says its schedule is dependent on when Williams completes repairs.  When NW Natural can begin restoring service, technicians will be going door-to-door to affected customers.  Customers do not need to do anything, and should not relight their equipment but wait to be contacted by NW Natural.   If a customer is not home, the technician will leave a door hanger with a phone number to call to schedule a time that works, typically that same day.  NW Natural has brought in extra crews and is receiving additional assistance from other utilities through a mutual assistance program.  Customers may see employees wearing badges from NW Natural, Avista, Cascade or Puget Sound Energy.  All workers will carry ID when they arrive at customer homes and will follow COVID-19 safety protocols.  NW Natural distributed blankets to customers from the Hood River Fire Department last night and will communicate plans for additional resources and distributions later today.