SANDAG appoints HDR for LOSSAN rail realignment project October 19, 2023 | Company News, News, North America Company News, North America News The San Diego Association of Governments (SANDAG) has appointed HDR to undertake the environmental clearance process and to advance the conceptual engineering on the Los Angeles–San Diego–San Luis Obi... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password