Dozens of volunteers gathered at Arvin City Hall Saturday morning for the citys first-ever Earth Day clean-up and beautification event.Armed with tools, elbow grease, and teamwork, students from Arvin High School and Grow Academy worked alongside community members to plant trees, add greenery, and clean up public spaces. Arvin Mayor Olivia Caldern joined the community effort."We are celebrating Earth Day here in the city of Arvin, honoring our p…