Derrik Williams, P.G., C.Hg., principal hydrogeologist in M&A’s Paso Robles office, will speak at the Sustainable Ag Expo in San Luis Obispo, Calif., on Wednesday, November 13. The conference, which begins on Monday, November 11, is also host to the International Sustainable Winegrowing Summit. Session topics include climate change, pesticides, invasive insects, resilience in a changing landscape, and other issues pertinent to winegrowers. Derrik will be joined by Jacob Hernandez from JH Ag Consulting in a session titled SGMA and Other Water Regulations. The session will provide both legal and practical information on water regulations and inform growers on compliance.