PDC has been engineering mechanical systems serving facilities of nearly every description for more than 20 years. Although many of the facilities designed by the firm are located at remote sites, including the Arctic and Antarctic locations, we also have project experience in temperate, as well as tropical environments. While a good deal of our design efforts are related to mechanical systems required of sophisticated facilities such as hospitals and laboratories, we also provide mechanical engineering for the design of military and industrial facilities. INDUSTRIAL PDC has a strong background in industrial work, including designing ventilation for Alaska's largest hardrock mine (a project requiring fans capable of moving 250,000 SCFM @ 10" w.g.); full stream fabric filtration systems designed to clean up 680,000 ACFM of boiler flue gas, renovation of existing power generation plant systems including boiler feed water pumps, low voltage station power, and installation of new flue gas heat recovery system. INSTITUTIONAL FACILITIES For more than 20 years PDC has been designing mechanical systems serving schools, visitor centers, offices, museums, hospitals, scientific laboratories, and other types of institutional, and commercial spaces. Many of these facilities require design of humidification-dehumidification systems to control indoor environments. Our remote and cold regions design experience provides us with special knowledge in the design of energy efficient systems. Since Direct Digital Control (DDC) systems became commercially available, PDC has pioneered their application to control HVAC equipment. As a matter of fact, early, innovative use of DDC technology in 1985 and 1986 lead to an ASHRAE Energy Award for our energy conserving mechanical systems design. FUELS PDC's Fuels Group has evolved over the past 15 years to provide our clients with world class fueling projects of which our clients are proud of and which perform as expected. Selected personnel from PDC's mechanical engineering group make up the core of our Fuels Group. Central fuel distribution systems employed at airports (including aircraft hydrant fueling) as well as truck fill stands, pipelines, and fuel storage tank installation are, by their very nature, multi-disciplinary projects utilizing civil, structural, and electrical engineers as well as mechanical engineers.