A 47-year-old Washougal man died in an ATV accident Tuesday evening in the Gifford Pinchot National Forest.  The Skamania County Sheriff’s Office says the accident occurred on private timber land about 18 miles east of Cougar.  Emergency personnel found Eric J. Heath deceased at the scene of the accident.  A passenger, 38-year-old Nicole R. Bryden of Vancouver, was transported by ambulance to Southwest Washington Medical Center in Vancouver for treatment of injuries.  The Sheriff’s Office says initial reports indicate Heath was riding a quad with inoperative headlights and that he was not familiar with the area.  There are indications alcohol and/or speed may have been a contributing factor, the investigation is on-going.  Heath was taken to the Clark County Medical Examiner’s Office for an autopsy.