Relevant Construction Solutions “RCS” offers professional construction and dispute resolution services for anyone involved with construction projects or programs. It’s founder, Douglas Oppman has 35 years of construction and engineering experience from site Superintendent to Sr Project Manager. Douglas also has 6 years of Civil Engineering design experience. Since 2011, he has focused on construction disputes, contracts, change management, claim development and defense, preconstruction sourcing services, and an owner’s representative.