SAN RAMON, Calif. & SAN FRANCISCO–(BUSINESS WIRE)–Brightmark LLC and Chevron U.S.A. Inc. today announced the second expansion of their previously announced joint venture, Brightmark RNG Holdings LLC, to own projects across the United States to produce and market dairy biomethane, a renewable natural gas (RNG). Brightmark RNG Holdings LLC’s subsidiaries currently own RNG projects in New York, Michigan, Florida, South Dakota and Arizona. Additional equity investments by each company in the join