SLC was selected by the City of Pilot Rock to construct their Staircase Improvements Project. Construction began in April of 2017 and completed it in May 2017.
The main goal of the project is to relocate the staircase from the City of Pilot Rock’s High School to the downtown area. The project included site preparation, earthwork, fabrication of foundations and landings, and construction of sidewalk. Pedestrians can now safely walk from the high school to the down town are safely.
SLC was selected by the Monument Soil & Water Conservation District to construct their Cavender Wetland Enhancement Project. Construction began in August of 2016 and completed it in October 2016.
The main goal of the project is to improve wetland and riparian habitat at a site adjacent to the North Fork of the John Day River, right outside of the City of Monument. The site was formally a saw mill pond that last operated in 1959. Multiple flooding events have deposited an estimated 6 feet of silt within the pond and created a wetland area which is very uncommon to the area.
Construction included installation of a large wood habitat structure that also functions as a bank protection structure, excavation of side channels within the existing wetland area, a few small wood habitat structures within the new wetland channels, lowering of the existing levee, removal of silt build up, and installation of 700 feet of Juniper rootwad fence along the lowered levee to keep livestock out of the river.
The Little Creek Project involved the construction of a new diversion structure and re-graded the existing stream channel.
The new diversion structure included a new fish ladder with screens, adjustable head gates, measuring device, and a water gap modification.
Three diversions were part of this project and employed similar methodology in construction. In all SLC imported 8,000 CY of select fill and/or stream simulation rock, and nearly 4,000 CY of large boulders for rock weirs and fish rock clusters.
The four sites, spread along 40 miles, were all completed in just over 30 calendar days.
Work for the project consisted of excavating approximately 1,800 feet of new river channel, filling in approximately 1,300 feet of existing river channel, and creating 400 feet of side channel.
Riffle/pool excavation, wood debris and wood habitat structures were also installed along with juniper revetments and tree plantings.
The project consisted of the demolition of the existing irrigation diversion structure and construction of a new structure, creation of new irrigation diversion channel, grading and placement of stream simulation material, and instillation of numerous habitat structures, brush mats and willow bundles. In addition, new side channels and alcove areas were created.
The Lostine Diversion Fish Passage Improvements included the demolition of the existing concrete structure, re-grading of approximately 300 feet of the Lostine River downstream from the previous structure, installation of 11 cross-vanes, and the construction of two wood debris structures.
SLC hauled and installed 1,470 cubic yards of boulders and 1,370 cubic yards of river gravel and backfill material in order to complete the project.
The Baum Habitat Improvements consisted of the construction of a new side channel, two large log jam structures were, along with 10 smaller woody debris jams.
In all, approximately 65 large trees with rootwads were placed, with another 65 smaller diameter pieces of tops and smaller trees for use as racking.
SLC was awarded the contract by the City of Cove to construct a new irrigation storage pond complex totaling approximately 30 acres for the disposal of treated wastewater to increase the capacity of the existing wastewater plant.
In constructing the storage ponds approximately 85,000 CY was excavated and 53,500 CY of embankment was constructed.
The work completed under this contract involved the removal and salvage of approximately 5,500 feet of 18-inch diameter steel pipeline from the City’s water intake to a diversion structure located on a nearby creek. The project also included the instillation of 5,500 feet of 24-inch diameter HDPE pipe, clearing and grubbing, and easement restoration.
