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Cheyenne Regional Airport Compliance Planning

The Cheyenne Regional Airport chose DOWL to provide Parts 139 and 1542 security compliance planning services in early 2019. DOWL is assisting the airport with revisions to the Airport Certification…

Swan River Floodplain Delineation Study

DOWL recently completed the hydraulic evaluation and floodplain mapping tasks for a 19.1-mile reach of Swan River, from Swan Lake to the Missoula County line, for the Montana Department of…

TranPlanMT

…decisions. The update complies with current regulations and guidance under MAP-21 and the FAST Act including consideration of national planning factors and identification of performance measures and targets in the…

Blacktail Deer Creek Floodplain Study

DOWL has completed the hydraulic modeling and mapping for a new enhanced level (with floodway) floodplain study for an 11-mile reach of Blacktail Deer Creek in Beaverhead County. This flood…

Bolon Island Haul-Out Basin

DOWL provided engineering, survey, and permitting services for the marine structures to be constructed at the future Bolon Island Boat Haul-Out Facility in Reedsport, Oregon. DOWL environmental specialists provided extensive…

Bighorn Canal

…the BIA and contractor on a design-build basis. This quick response and coordination resulted in only a six-day shutdown of the canal to complete the repairs during peak irrigation season….

Newport Dock 5 Replacement

…both pedestrian and vehicle loads and provides access to the Port’s commercial fishing fleet. Following final design, the Port applied for and was awarded an EDA grant that helped to…