Skamania County residents will no longer be allowed to set small debris fires starting Thursday.  The ban includes residents who have already received self-issued permits for burning this year.   The county says those permits will be “null and void” as of Thursday.  Fire officials across the state are bracing for a difficult wildfire season as Washington enters the summer in drought conditions.   Public agencies across the region are announcing burn bans to reduce the risk of human-caused fires.  Permits for small debris fires will be available in Skamania County after October, weather permitting.