METRO awarded Aquatic Contracting (AC) this multi-year contract because of our competitive price and our extensive experience working in the Sandy River basin. This 2-year project was full of logistical challenges, implementing large scale stream channel and floodplain restoration on both sides of the Sandy River within Oxbow Regional Park. The first phase of the project involved reconstruction of a precarious access road bordering the Eastern rim of the Sandy River valley wall. Large woody debris and material was provided via the access road to the first phase of the stream channel restoration. The first phase included excavation of an existing side channel, large wood habitat structures, grade control structures, and floodplain habitat structures. The project also included, isolation, dewatering, fish salvage, temporary and permanent erosion control and access decommissioning. The second portion of the project was equally as challenging, with public safety being the primary concern as all work areas had to be accessed from within Metro_s popular Oxbow Regional Park/Campground. This phase included helicopter transport of large wood and boulders and access road construction through the steep lahar banks of the Sandy. Upon completion of the temporary access roads, Aquatic Contracting removed a large concrete retaining wall dating back to the late 1950_s. In its place, AC installed a large emulated landslide log habitat jam. At other locations within the park, two historic side channels were re-connected compete with inlet structures, channel margin wood structures and permanent erosion control/riparian plantings. The project also included restoration to the parking areas, roads and trails within the park.
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