System One Environmental (formerly RPG Resources, System One company) is an environmental consulting firm that is committed to partnering with a diverse range of clients to ensure environmental and regulatory compliance while driving efficiencies and cost savings.
At System One Environmental, we provide comprehensive environmental consulting services to support design, permitting, regulatory compliance, and project development across the energy, utility, and infrastructure sectors. With offices in Pittsburgh, PA and Denver, CO, our team of engineers, biologists, environmental scientists, and technical specialists deliver solutions tailored to each project’s unique needs. From wildlife and wetland surveys to drone-based mapping, erosion and stormwater drainage design, and environmental inspection, we work closely with clients and agencies to ensure environmentally responsible outcomes that meet regulatory requirements and project goals.















