Robert MacKimmie is a Greywater Systems Designer and Installer accredited through Greywater Action, an ARCSA accredited Rainwater Professional (ARCSA-AP), a Green Roofs Professional (GRP) accredited through Green Roofs for Healthy Cities , an accredited GreenPlumber through GreenPlumbers USA, has been through the Sustainable Landscape Design program at Sonoma State University, sets up Sustainable Mini-Farm Biointensive food gardens for individuals after studying with Jon Jeavons at Ecology Action’s Research Garden, and has been a San Francisco city apiarist for 14 years serving as an educator and mentor.