A fire that destroyed or damaged at least 15 homes and left one person dead in the Spokane Valley is now 75% contained. According to the Washington Department of Natural Resources, crews are now primarily focused on mop-up and patrol at the 213-acre Upriver Fire. Fire investigators believe the fire was human-caused. Officials said people living in the area may continue to see smoke from isolated areas, but the fire is not likely to spread furthe…