The Spokane River Centennial Trail is a non-motorized 37-mile paved pathway beginning in the state line of Idaho and ending in Nine Mile Falls, Washington.

DZA has adopted mile 7-8 and twice a year, the firm comes together to participate in a clean up of the trail.

The day starts off with a firm luncheon or barbecue and then everyone grabs a bag and starts picking up trash. Spouses, children and family members are welcome to participate.