Bain Medina Bain, Inc. (BMB) is a professional consulting engineering and surveying firm established in 1959 and based in San Antonio, Texas. The firm is highly qualified to provide professional services for a wide range of engineering and survey projects. These projects include design, preparation of plans and specifications, construction administration for rehabilitation and/or reconstruction projects, site development, highway, roadway and street construction, water distribution, wastewater collection, and storm water management. Survey services include boundary, topographic, Right-of-Way, GPS and construction surveys.