Cleanup of The Dalles Marina in the aftermath of a fire August 1 that destroyed five boathouses and one dock along with significantly damaging two other boathouses will begin this week.  Port of The Dalles Executive Director Andrea Klaas says contractors will begin arriving tomorrow to do the cleanup.  She says it is expected the clean-up will take about one day per boat house, but this is a more challenging clean-up than after a similar fire last summer.  Klaas says the insurance companies involved in the fire investigation have wrapped up their work.