(Longview, WA)  --  The City of Longview, Washington is declaring a water shortage emergency following the shutdown of the Westlake Chemical plant that makes chlorine for water treatment in Oregon and across the Northwest.  City officials announced the declaration yesterday.  Residents with even numbered addressed are being asked to water on even numbered days and residents with odd number addresses are asked to water on odd numbered days.  Restaurants can't serve water unless the customer asks for it.  There are also limits on how long kids can play in sprinklers to cool off.