Saturday, April 26, 2025 | 10 am - 4 pm Earth Day Expo Western Dakota Technical College Full Schedule of Events Art Contest Voting Food Truck Menus Interactive Campus Map To sign up to volunteer, use the QR code below or click here. To sign up as a vendor or sponsor, use the QR code below or click here. Thank You to Our Sponsors! Western Dakota Technical College 800 Mickelson Drive Rapid City, SD 57703 Earth Day Expo is hosted by: