Take Charge by Melody Carlson

Written by bestselling author Melody Carlson. Meet Morgan, Amy, Carlie, and Emily. They all live in the trailer park at 622 Harbor View in tiny Boscoe Bay, Oregon. Proximity made them friends, but a desire to make the world a better place—and a willingness to work at it—keeps them together. In book three, Project: Rescue Chelsea, Carlie makes a new friend. Chelsea Landers lives in a mansion and isn’t always very kind. Carlie would like a best friend, but will Chelsea fit in with her other friends? In book four, Project: Take Charge, the girls decide to take action when they find out their town’s only city park has been vandalized and may soon be turned into a parking lot.