METRO PLUS is a tri-venture made up of Alta Environmental, MARRS Services and Louis Berger. METRO PLUS was strategically form ... ed in order to pursue the Environmental Compliance and Sustainability Support Services Contract (RFP No. AE51181) with LA Metro. Our team brings the unique combination of highly regarded experience with LA Metro, superior local environmental expertise, and world-class best practices and thought leadership in sustainability and environmental services. read more