Mount Rainier National Park Visitor Use Monitoring and Modeling
The team at DJ&A conducted this multi-year, multi-phase program of work with the U.S. National Park Service to address transportation and visitor use management issues in the Nisqually Corridor of Mount Rainier National Park. In the first phase, the team collected onsite data and developed a computer simulation model to…
Substation Scanning Project – Western U.S.
Accurate facility ratings are crucial to the safety and reliability of the electrical grid, as they help in assessing the capacity and performance of substation equipment. To support our client in meeting compliance requirements for facility ratings, our team measured the diameter of the bus pipes and jumpers at specific…
Region 6 Dam Assessments
Under their IDIQ contract with the NRCS, DJ&A provided engineering services for assessment of flood hazards associated with nine (9) USFS dams varying in height between 6 and 50 feet within the Mount-Baker Snoqualmie, Colville, Rogue River-Siskiyou, Siuslaw, and Wallowa-Witman National Forests in Oregon and Washington. Site visits were conducted…
Swan Lake Campground Water System Replacement
Originally built in 1936 by the Civilian Conservation Corps, the Swan Lake Campground site was historically preserved in 2009 and retains its charming historic character. The forest’s great salmon runs first attracted Native Americans to the area, then miners, homesteaders, and fur trappers followed. After several years of growing maintenance…
Lone Ranch Road Reconstruction
A few years ago, debris flow damaged a culvert and sections of the North Fork of Lone Ranch Road, located at an elevation of approximately 4320ft. near Danville, Washington. The debris buried a culvert inlet under 5-10 feet of material, overtopped the road prism, and removed about 10 feet of…
Forest Road 90 Slide Repairs
DJ&A provided project management and professional design services for approximately 46 repair sites along 16 miles of damaged road located within the Mt. St. Helens National Volcanic Monument. DJ&A prepared a complete bid package necessary for the Forest Service to place a competitive contract out for site repairs, including: deep…
Cowlitz County Ranger District ERFO Repairs
Major winter storm events in 2015 caused significant flood damage to several forest roads throughout the Gifford Pinchot National Forest. To expedite the repair process, the Forest Service requested Emergency Relief for Federally Owned roads (ERFO) through Western Federal Lands Highway Administration and selected DJ&A as the highest qualified firm…
Westside AOP Projects
This project included aquatic organism passage (AOP) design at three culvert replacement sites near Kettle Falls, Washington on the Colville National Forest. All three sites required open-bottom structural plate arches on precast concrete footings. During the first phase of the project, The DJ&A crew accompanied Forest Service personnel to the…