HORSETAIL CREEK FLOODPLAIN RESTORATION
CASCADE LOCKS, OR
This restoration project located on 180 acres of Columbia River floodplain in the Columbia Gorge Scenic Area included several stakeholders including LCEP, USFS, BPA, ODOT, UPRR, City of Cascade Locks, Interfluve, Inc. and others. The project was successfully completed despite a short work window, differing site conditions, access constraints and challenging logistical complexities.
The restoration goals included: fish passage improvement retrofits to the Interstate 84 Horsetail/Oneonta Creek culvert, helicopter-assisted habitat log placement, engineered log structure installation, floodplain grading and stream channel re-alignment. In order to construct the project, Aquatic Contracting secured access permits from ODOT and UPRR, and implemented traffic control and public safety measures. Floodplain grading plans required the dewatering of a 4 acre pond for fill placement and new channel construction. In this process AC pumped over 80 million gallons of water and moved approximately 20,000 cubic yards of soil in moist and saturated conditions. Dewatering and access requirements included two gravity bypass diversion systems, temporary bridge and culvert crossings.
In total, over 600 pieces of large wood were installed in Oneonta and Horsetail Creeks, and the newly constructed pond/channel/floodplain complex. Shortly after the project completion, adult salmon were observed utilizing the improved fish passage during low-flows which would have been prohibitive prior to construction.
RUBY LAKE RESTORATION PROJECT
SAUVIE'S ISLAND, OR
In August of 2013 AC began working with Columbia River Estuary Study Taskforce (CREST) to restore 30 acres of wetlands, remove an obsolete control structure and create riparian peninsulas for native planting on the northern end of Sauvie's Island. The project included the excavation of 40,000 cubic yards of soil to re-create the wetlands and 4,000 cubic yards to remove the structure. Construction began by stripping canary grass in the 3 wetland cells to a depth of 18 inches. These strippings were hauled to a nearby spoils location and buried with soil from the mass wetland excavation. For the first 3 weeks construction was done in ideal conditions. Then, in September record rains began turning the wetland area into a...wetland. Construction continued in less than ideal conditions until 7 inches of rain fell in a 48 hour period. This made hauling impossible, and merely tracking an excavator on the site had to be done with great care. Conditions became so bad that an on-site engineer (who will remain unnamed) bet his house that the project would not be completed.
AC personnel waited for better weather, then began pumping and managing the water in the wetland cells. While this was being done removal of the control structure began as it was located in a dryer area of the project. This was a gamble because the structure helped keep out tidal fluctuations. However, a coffer dam was built on the downstream end of the structure to the highest elevation possible, but given the high flow conditions had only 6 inches to spare. The structure was removed in 2 days and flows receded as conditions became somewhat dryer. When wetland excavation resumed pumping became a constant chore and soil and hauling conditions were less than ideal. However, AC persevered and excavated all three wetland cells to the specified grade, installed the necessary logs for habitat and in mid-October, under sunny skies excavated the pilot channels, connecting the wetlands to Ruby Slough. Curiously, no deed to the engineer's house has been seen. In late October the site was seeded and stabilized, roads re-built or decommissioned.
Following construction, AC planted the site with nearly 6,000 native plants, over 2,500 willow cuttings and 2,000 Wapato bulbs. Because of saturated conditions this effort would have been impossible without AC's specialized equipment.
HAPPY CREEK AND SANDY RIVER SIDE CHANNEL RECONNECTION PROJECT
OXBOW PARK, OR
As part of an ongoing restoration effort in the Sandy River Basin, Aquatic Contracting was hired to implement the multi-faceted Happy Creek Restoration Project. AC began by excavating and enhancing a 1600 foot long side channel to the Sandy River, installing over 400 logs to create numerous in-stream habitat structures. Part of side channel excavation included installation of a 325 foot long inlet log jam structure to help direct flow from high water events into the side channel. A perennial tributary to the Sandy River was also restored and redirected through its historic floodplain, into the newly excavated side channel, and then to the Sandy River. AC installed a new fish passable culvert under the Park's main access road and re-built and paved the road to highway standards. AC excavated pools, installed single and multiple log structures as in-stream habitat and installed a small pedestrian trail bridge for public access. As part of the project, AC biologists also conducted fish salvage and regulatory agency coordination.
NORTH FORK AND DAVIS RANCH WETLAND ENHANCEMENT
In order to accomplish mitigation requirements, PGE designated two of their wetland properties (North Fork and Davis Ranch) to be expanded and enhanced. Both sites were once industrial areas, but due to beaver influence, portions became wetland systems. The North Fork site was previously a logging mill facility and Davis Ranch was once a homestead for railroad and pipeline construction in the early 1900's. During excavation to expand areas with wetland hydrology, AC practiced a low impact construction approach to protect the sensitive ecological system.
AC excavated over 7,500 CY of soil. The removed soil could not support plant life due to heavy compaction, rock content, heavy clay and buried industrial waste materials. In order to accommodate plant and seed success, AC imported 2,000 CY of topsoil. Habitat logs and snags were installed to promote biodiversity. Control logs were placed in to prevent scour and to insure that the hydrology of the sites remained as designed. Since the beavers were no longer active at the North Fork site, AC reinforced the remnant dam with boulder, cobble, logs and organic materials. Blackberry and invasive weed species were cleared from planting zones. AC planted the site with over 2,500 native plants in the wetland and upland locations. Additionally, willow plants in adjacent areas served as the source for harvesting additional cuttings used for revegetation.
AMES CREEK FISH PASSAGE RESTORATION
SWEET HOME, OR
AC was contracted by the South Santiam Watershed Group to restore fish passage to lower Ames Creek. The construction of Foster Dam upstream lowered river levels of the Santiam River downstream exposing an impassible bedrock chute. AC worked with the owner and Inter-Fluve Inc. to hammer and excavate nearly 300 cubic yards of bedrock, forming step pools and a natural fish ladder. The engineer, owner and AC all worked together to make design modifications which created a more natural product, using the existing bedrock to create the pool formations instead of pouring concrete and importing boulders. During construction the creek was diverted by gravity, using nearly 300 feet of HDPE pipe AC maintained this diversion 24 hours a day without the use of pumps. Upon completion of the project, fish passage which had been cut-off since 1967 was immediately restored.
BADGER CREEK HORIZONTAL FISH SCREEN AND VERTICAL FISH LADDER PROJECT
NEAR THE DALLES, OR
AC was contracted by the FCA install a large horizontal fish screen and a vertical fish ladder to eliminate fish entrapment, improve fish passage, and assist the Badger Creek Improvement District with their conservation goals. Located within the Badger Creek Wilderness, construction access was extremely limited, and the project site was miles from the nearest road. All materials and equipment were mobilized 3 miles up the district's narrow irrigation ditch to the proposed screen location. AC installed the large, modular, prefabricated steel fish ladder in segments, making modifications to the concrete headgate for the specified fishway entrance and exit. AC then installed the dual 80-foot long horizontal fish screen in segments behind the concrete headgate.
FCA's screen is designed to be self-cleaning and is pre-fabricated, allowing for both ease of installation and minimal maintenance.
GNAT CREEK TIDAL WETLAND RESTORATION PROJECT
AC was selected by CREST to reconnect over 20 acres of historic tidal floodplain with the mainstem of Gnat Creek. This multi-faceted project included improving access and enhancing habitat for juvenile salmonids by removing an impassable fish culvert and earthen dam on a tributary to Gnat Creek, removing 800 feet of levee along Gnat Creek, and improving tidal influence to over 20 acres of estuarine wetland. AC removed two culverts, debris, and over 2500 cubic yards of fill material as part of the restoration. AC then sourced habitat logs, including tipping and hauling the logs needed for the project. Using over 150 logs, AC created numerous log structures to provide additional habitat in the estuary along Gnat Creek and in the unnamed tributary. Working with CREST to protect high quality wetlands below where the earthen dam was removed, AC installed logs and created habitat structures using low-impact cable and winch methods, eliminating the need for heavy machinery access and wetland impacts.
LAWRENCE BULKHEAD REPAIR PROJECT
Aquatic Contracting removed approximately 150 feet of creosote piling bulkhead on Puget Sound near Silverdale Washington. Because of limited access the bulkhead material, including concrete, cable tiebacks and a derelict anchoring system had to be carefully lifted up a steep slope and transferred to drop boxes and disposed at an approved location. Large trees were then fell onto the beach; excavators and a cable and winch system were then used to position the logs at the toe of the slope. The logs were anchored using manta ray anchors, and rock and topsoil was placed behind the logs to re-grade the slope. This created a "soft" bulkhead preferred by several agencies including Washington Department of Fish and Wildlife.
MILK CREEK IN-STREAM AND RIPARIAN ENHANCEMENT
CLACKAMAS COUNTY, OR
AC was selected to stabilize eroding banks and improve habitat conditions for coho, chinook, steelhead, and resident cutthroat trout along 1000 feet of Milk Creek. Based on the extent of in-water work needed, AC first diverted creek flows by excavating a bypass channel, then installed a series of turbidity curtains to help minimize downstream impacts. After stream diversion, AC constructed 400 feet of a vegetated log matrix along the eroding meander bend The bank stabilization effort used over 600 logs and all rootwads and stick logs for the structure were drilled and pinned with rebar. The structure was backfilled using boulders, imported rock, and spoils to provide the necessary ballast. Salvaged willow shrubs and hundreds of willow cuttings were also placed in the matrix before backfilling. As part of the project, AC also installed three engineered log jams to help stabilize an adjacent streambank and provide additional in-stream habitat.
ROWE CREEK FISH PASSAGE IMPROVEMENTS
Near Fossil, OR
An RFP was put out in late June of 2012 for design/build services for significant restoration along Rowe Creek in the John Day Basin. Phase I was time is of the essence to replace two culverts which caused significant fish passage issues and were in dire need of replacement. Phase II was developing a comprehensive restoration and passage plan for the lower 1.5 miles of Rowe Creek. Aquatic Contracting, serving as the general contractor, teamed with Geo Engineers and White Shield Surveying Inc., to submit an extensive proposal addressing the necessities of the project and outlining the team's extensive experience and knowledge in the field. We were awarded the project an on July 30th received a notice to proceed on August 3rd. By early September the team had developed 30% drawings and the permitting process was underway. By December 20th Phase I was complete- this part of the project was awarded, surveyed, designed, permitted and constructed in less than 5 months, opening up nearly 8 miles of spawning habitat. Phase II is currently in the design process.
RUDIO CREEK RESTORATION
One of the most challenging and tricky projects AC has ever tackled. We had been working with owners and engineers for several years to develop budgets and streamline planning to help facilitate construction. However, the funding fell short of construction estimates and additional funding could not be secured. This left the owner in a precarious position. There had been commitments made to the landowner and the funding that had been secured would be lost if the project was not completed by the end of 2012. AC began working with the owner and engineer to identify cost saving measures, formulate a construction plan and work with all parties involved to complete this project. In the end AC re-constructed 2,000 feet of historic Rudio Creek, constructed 6,600 feet of new channel and enhanced another 600 feet of existing channel. This project included the installation of nearly 2,000 pieces of LWD, salvage, import and placement of 5,000 cubic yards of streambed rock, excavation of 20,000 cubic yards of soil, construction of an off-channel pond, partial filling of an existing pond so part of the new channel could be constructed in the fill, installation of an infiltration gallery, enhancement of 6 acres of floodplain, and construction of several plugs and jams in the old Rudio channel. The project was successfully completed in difficult conditions and on a limited budget due to the teamwork of all parties. It was also completed because of the commitment of AC employees and our dedication to the industry. Restoration is about following through on commitments to landowners and working as a team with owners and engineers, in certain instances you have to make sacrifices for the good of the industry and AC did that on the Rudio Creek Restoration Project.
ODELL CREEK RESTORATION
ODELL LAKE, OR
Contracted by the United States Forest Service, AC placed nearly 200 large logs to benefit Bull Trout habitat. The log placement also helps maintain a stable lake level throughout the year. Because much of the work was done directly in the water and AC used their 100% fish friendly excavator to minimize the risk of any petroleum based products entering the creek.
HONEYMAN CREEK WETLANDS RESTORATION AND BRIDGE INSTALLATIONS
AC was contracted by the Scappoose Bay Watershed Council to restore tidal fluctuation and wetland function to a 500 acre ranch in Warren, Oregon. The property had been diked and under-sized culverts were failing and allowed limited tidal fluctuation to existing wetlands. AC installed turbidity controls, removed culverts and installed 3 bridges with precast concrete footings. The project was completed in two weeks with AC crews and included cast in place concrete bridge decks.
BOATMAN GROVE RESTORATION
AC was contracted by The Freshwater Trust to complete an estuary enhancement project which had been abandoned several years prior. Because the project had been partially constructed, AC was hired to utilize their expertise in design/build and knowledge of wetland and estuary environments. AC matched grades, removed obsolete culverts and installed habitat features including LWD, spawning gravel, pools and riffles. A large culvert was also installed to facilitate tidal fluctuation. The goal of the project was to restore tidal influence and hydrology to historic estuarine wetlands.
JOHNSON CREEK CONFLUENCE RESTORATION
In the winter of 2011 Aquatic Contracting worked closely with Inter-Fluve Inc. and The Johnson Creek Watershed Council to begin developing a design/build restoration plan to enhance the confluence of Johnson Creek and the Willamette River. Over several months, prior to construction the three partners worked with local landowners, the City of Milwaukie and ODS to come up with plans that fit budget allocations, protected existing infrastructure and mimic historic conditions while greatly increasing habitat. The design/build approach allowed for flexibility and adaptation to address the site's unknowns including: location of utilities, composition of substrate, and best location of log jams.
Construction began with AC hauling, unloading and rafting logs at a nearby boat ramp. The logs were then floated to the confluence using a tug boat and secured until installation began several weeks later.
Restoration elements included the placement of nearly 200 logs, construction of a roughened riffle to protect an exposed sewer pipe and placement of several hundred boulders to increase stream complexity and facilitate fish passage. The project was completed under budget allowing for future maintenance and increasing the budget for riparian planting.
LUCKIAMUTE PIER REMOVAL PROJECT
Aquatic Contracting was hired to remove several derelict bridge piers in the Luckiamute River. The piers were part of an old rail line and were roughly 20 feet tall, 8 feet wide and 25 feet long. AC isolated the work areas, and utilized a large excavator with a hammer to break apart and push over the large piers. Another excavator was used to remove the debris and haul it to an approved dump site. The piers had huge tension bars and re-bar incorporated in them which was recycled. Each site was restored to original conditions after demolition.
MEACHAM CREEK RESTORATION
The Meacham Creek Restoration Project was a large scale restoration project east of Pendleton, Oregon. The project was the re-channelization of nearly 2 miles of Meacham Creek into its historic channel. AC was subcontracted by Tapani Underground Inc. to assist with turbidity and erosion control, water diversion, and install all habitat features including rock and log jams, boulder clusters and stabilization structures. The project included the construction of over 40 large log jams, 1000 single and double log structures and placement of more than 3000 boulders.
SALMON RIVER RESTORATION
AC was contracted with The Freshwater Trust, Bureau of Land Management and the U.S. Forest Service to construct the Salmon River at Millers Quarry Restoration Project. AC tipped, bucked and hauled 70 large fir trees with root wads to the site prior to construction. All materials were then hauled down to the river using off-road dump trucks to minimize impacts of dragging or skidding logs. AC then constructed 15 large in-river log jams to provide habitat, cover and recruit spawning gravel. A 900 foot side channel was constructed to provide off-channel habitat and refugia. The project was constructed under budget and in less time than anticipated.
Due to very limited access on phase II, AC worked with Columbia Helicopters to fly whole trees to several different sites. Phase II was located on an island on the other side of the river. Excavators were walked across the river and remained there until this phase was complete. All materials, fuel, pumps, and supplies were shuttled across the river via skyline. Construction included a large confluence log jam on an island in the middle of the river. This log jam is designed to protect the existing island and add habitat during high flows. Several large log jams were also constructed on an existing side channel to add complexity and habitat. Because of the pristine water conditions of the Salmon River the project was done with extensive turbidity controls. The project was completed in extremely sensitive areas in conjunction with several government agencies.
SANTIAM HEADWATERS TREE TIPPING
Utilizing our existing USFS tree tipping contract, AC began pulling over trees in several different locations in the Detroit Ranger District. The project is part of an on-going effort to increase Chinook spawning habitat. Utilizing our large mobile skidder AC pulled over approximately 200 trees, some of which had root wad diameters over 12 feet. The trees were then cable yarded into jams and structures which capture spawning gravel and provide cover and structure.
STOUT CREEK ABBOT PROJECT
As part of the on-going restoration project on Stout Creek and the North Santiam River, AC worked with the North Santiam Watershed Council and River Design Group to install log jams and remove fill on an old mill site near Mehama, OR.
Over 1000 cubic yards of material was removed from the edge of Stout Creek to help restore floodplain connectivity and stabilize existing banks. AC built several large log jams to increase habitat along several miles of the creek. Existing incised banks were re-sloped to create stability and surface area for riparian planting. The project site was stabilized using straw wattles, coir fabric, native seed and weed free straw. Done on a time and materials basis the project was completed on-time and under budget.
ALLISON-RANDALL PRESERVE RESTORATION PROJECT
Working with the South Puget Sound Salmon Enhancement Group, Aquatic Contracting restored and enhanced over 10 acres of estuarine wetland. Derelict culverts and berms were removed to allow for tidal influence and restore hydraulic function to areas which had been cut off for 75 years. Habitat logs and spawning gravel was added and stream channels re-created to facilitate natural function. Concrete weirs, old hatchery infrastructure, and a building were demolished and recycled. The disturbed area was seeded and stabilized with recycled woodchips and native plants.
SOUTH FORK SKOKOMISH RIVER LARGE WOOD ENHANCEMENT PROJECT
HOOD CANAL RANGER DISTRICT
AC was contracted by the Olympic National Forest to construct this large-scale stream enhancement project on the Skokomish River. Over 3000 whole trees with root wads were initially staged on over one mile of the Skokomish River by helicopter. AC staff then reconstructed an abandoned forest road to provide heavy machinery access before log jam construction.
Numerous log jams were constructed containing as many as 600 trees. Working closely with USFS staff, AC installed log jams along the edges of the main channel, on the floodplain, on active gravel bars, and at tributary outlets of the South Fork Skokomish River. To increase log jam stability, large portions of each structure were buried below the streambed. Whole trees were often buried as pilings and anchor trees to help increase stability. The final log jam constructed contained over 600 whole trees and was nearly 400 feet long, 16 feet high and over 60 feet wide. It is estimated to be one of the biggest engineered log jams ever constructed in the Northwest.
Team members included the Skokomish Nation, Olympic National Forest, Washington State SRF Board, and was designed by Brian Bair of the USDA Forest Service TEAMS Enterprise Unit.
STOUT CREEK BANK STABILIZATION
AND HABITAT ENHANCEMENT PROJECT
Working with the North Santiam Watershed Council and River Design Group, Aquatic Contracting began the Stout Creek Bank Stabilization and Habitat Enhancement Project under a tight timeline before the fall rains.
The project was constructed on a design/build basis with many of the aspects built with a "fit in the field" approach. The 250 foot stretch of stream had migrated toward an existing house and lacked any roughness or habitat features.
The creek was diverted and a series of turbidity curtains were placed on the downstream end of the project. Aquatic Contracting then constructed log jams and soil lifts to stabilize the bank and add habitat. The thalweg was moved away from the stabilized bank. A side channel was constructed to handle higher flows, alleviating some of the velocities from the main channel. The new bank, soil lifts and side channel area were planted with willows and other native vegetation.
SALMON AND COX FISH PASSAGE
St. Helens, OR
AC was contracted by the Scappoose Bay Watershed Council to improve fish passage at existing road crossings of Salmon Creek and Cox Creek.
For the Brinn Road crossing of Salmon Creek, AC installed a 22 foot wide, 75 foot long aluminum multi-plate culvert founded on pre-cast concrete footings. The project required constructing the culvert in two phases to maintain public access along Brinn Road for the duration of the project. Other aspects of the project included fish salvage, pumping, and channel diversion. Shallow bedrock was encountered and removed to reach footing grade. Immediately prior to construction a population of freshwater mussels was found within the project area, and AC adjusted dewatering and disturbance areas to minimize impacts.
For the Brooks Road crossing of Cox Creek, AC installed a 13 foot wide, 50 foot long aluminum multi-plate culvert founded on pre-cast concrete footings.
YELM CREEK OFF CHANNEL HABITAT ENHANCEMENT
In order to increase juvenile salmonid habitat in the Nisqually River Basin, The South Puget Sound Salmon Enhancement Group hired Aquatic Contracting to create off channel habitat along Yelm Creek. Aquatic Contracting constructed a large pond and wetland area that connected to the creek. This pond was created to provide off channel habitat during high flows, and cold, deep-water habitat during summer months. Carefully constructed inlet and outlet channels provided year-round flow and created additional spawning habitat.
Research showed the pond was being utilized by juveniles days after completion. It has also provided habitat for amphibians, turtles, waterfowl and raptors.
The Yelm Creek Project was done in conjunction with Chinook Engineering, Nisqually Tribe and South Puget Sound Salmon Enhancement Group.
STOUT CREEK ENHANCEMENT
AC was contracted by the North Santiam Watershed Council to install over 15 large wood structures along one mile of Stout Creek just upstream of its confluence with the Santiam River. Approximately 85 logs were incorporated into in-stream structures to provide increased habitat diversity and complexity within the channel.
CHEHALIS RIVER EMERGENCY BANK STABILIZATION
Contracted by the City of Centralia on an emergency basis, Aquatic Contracting LLC worked to stabilize 200 feet of riverbank using a combination of large wood and rock. During the floods of December 2007, over 11 feet of river bank was lost, exposing two high pressure sewer pipes. Aquatic Contracting carefully placed nearly 2,000 cubic yards of large rock and incorporated a large log jam along the eroded bank. Efforts stabilized the bank and protected the sewer pipe, with the log jam directing river flow away from the bank and increasing fish habitat.
CONYERS CREEK BRIDGE PLACEMENT
Aquatic Contracting LLC, was contracted by the Lower Columbia Watershed Council and the Natural Resource Conservation Service to replace two aging culverts with a large arch bridge, improving fish passage and tidal influence on Conyers Creek.
Under a strict timeline, Aquatic Contracting constructed a large coffer-dam in order to keep the project work area dry. The dam kept tidal fluctuations as high as 9 feet out of the project area. 2000 cubic yards of soil were excavated and the old culverts removed. 2000 tons of streambed gravel was placed to create a new channel and provide stability and habitat. For the bridge construction, piling were driven to provide support for the footings. A concrete slab was poured underneath the footing to provide additional stability in the tidal environment. Footings were then poured and the bridge placed.
To provide slope stability along the bridge wing walls, log jams were constructed and soil lifts placed on top. The project was completed in 40 days, inside the allocated window.
Shortly after completion the project survived the December 2007 flood. Had the project not been completed, it is likely the culverts would have not sustained the storm and flood damage, and the road would have been washed away.
ROSEBURG FISH ENHANCEMENT PROJECT
MYRTLE CREEK, OR
Working with the Bureau of Land Management, Aquatic Contracting was hired to increase habitat structure on Weaver and Martin creeks in the Umpqua River Basin. �AC personnel began the project by felling 65 large fir trees. �The trees were bucked into pre-determined lengths specific for each logjam site.
Because these sites were in steep, heavily forested canyons heavy equipment could not be used. AC utilized cable and winches, skylines and running lines, winching the logs into pre-determined locations along both creeks.�Some sites were up to 1000 feet from the nearest road.
All logs stayed in place during winter high water events.�As designed and built, the logs created scour pools, recruited wood and spawning gravel.
DEEP CREEK DAM REMOVAL
AC was contracted by GeoEngineers and Clackamas County Water Environment Services (WES) to remove a concrete weir structure that spanned Deep Creek. The concrete structure functioned as a dam, impounding flow and resulting in a fish passage barrier to resident and ESA-listed anadromous fish alike. Based on the presence of ESA listed fish species in Deep Creek, removal of this passage barrier was considered a priority to ODFW and the Clackamas River Basin Council.
FANNO CREEK/GREENWAY PARK ENHANCEMENT PROJECT
Aquatic Contracting LLC constructed 2,100 feet of new stream channel and installed over 30 log jams and single log structures. The logs were placed to mimic trees falling into the channel. The project was designed and constructed to increase fish habitat and reduce flooding on Fanno Creek. The new meandering creek channel was constructed and excavated entirely in the dry. Fanno Creek was then carefully diverted while final excavation directed the creek into the new channel. The old channel was filled and shaped into a shallow swale to allow for storm water treatment from adjacent storm drains. Log jams were pinned, roped, and/or anchored into place, and a new bridge was placed over Fanno Creek.
CALAPOOIA RIVER FISH HABITAT
ENHANCEMENT & BANK REINFORCEMENT
AC was contracted by the City of Albany to stabilize and enhance approximately 350 feet of the Calapooia River where bank erosion threatened portions of the City�s property and adjacent water treatment plant. Because the City�s downstream water intake and potential for ESA listed species, isolation of the in-water work area, fish exclusion, and turbidity controls were top priorities for the duration of the in-water work. AC installed over 500 feet of turbidity curtain. The project included excavation/import of over 6000 cubic yards of soil and 1000 cubic yards of boulders and rock. The bioengineering components of the project included incorporating approximately 90 conifer logs/root wads into the recontoured banks. AC staff also installed over 2000 feet of geotextile encased topsoil lifts (vegetated soil lifts) on top of the stabilizaed bank. Over 1000 native willow cuttings were obtained from nearby source areas, soaked to facilitate rooting, and then installed amongst the rock/LWD toe, within the in-bank LWD structures, and soil lifts.
The project was done in conjunction with the City of Albany and River Design Group.
LOWER COLUMBIA WATERSHED
COUNCIL FLOOD REPAIRS
VERNONIA & CLATSKANIE, COLUMBIA COUNTY, OR
Contracted by the Lower Columbia Watershed Council to repair erosion caused by the 2007-08 floods along the Nehalem and Clatskanie Rivers, Aquatic Contracting LLC (AC) used large rock, wood and bioengineering techniques to stabilize eroding banks and increase floodplain capacity at three sites. Utilizing a �fit in the field� approach, AC worked closely with each landowner, satisfying their needs and concerns while insuring each project functioned per NRCS design.
The first two projects required AC to install large woody debris to stabilize the toe of the banks, then incorporate large rock for ballast and stability. Bioengineering techniques including geotextile encased soil lifts were constructed on top of the large wood and rock structures, lessening the slopes and providing an improved planting area.
On the third project, AC excavated material to increase the functional floodplain, then stabilized the adjacent bank by incorporating large woody debris and rock to protect structures and farmland. The result stabilized the eroding bank, provided improved habitat, and increased flood protection/storage.
All of the projects were completed on a strict timeline within the ODFW in-water work window, and survived heavy floods 2 months later.
WHIPPLE CREEK STREAM RESTORATION PROJECT
AC was contracted by Clark County to construct stream restoration and floodplain enhancement measures on approximately one-half mile of Whipple Creek. Development within the watershed has increased stormwater runoff and flooding along Whipple Creek. The resulting incised channel has further disconnected the creek from its floodplain and adjacent wetlands.
To improve floodplain connectivity, minimize channel incision, and enhance in-stream habitat conditions, AC constructed 15 valley-spanning log jams and grade control log structures using over 350 pieces of large woody debris. Using a combination of buried log weirs, rock, and fabric encased soil lifts, AC stabilized portions of the stream bed that had experienced significant downcutting.
At the County�s request, AC returned to construct a nature trail through the approximately 40 acre natural area before installing thousands of native bareroot plants.
FLIGHTS END WETLAND ENHANCEMENT
SAUVIE ISLAND, OR
Ducks Unlimited contracted Aquatic Contracting LLC (AC) to enhance and restore an existing wetland. The control structure which supplied water to the 50 acre wetland was obsolete and beginning to fail. Aquatic Contracting isolated the area by installing a large cofferdam, then removed the old structure and associated pipe. A new pre-cast control structure was placed with larger HDPE pipe and new tide gates. As part of the enhancement, AC also graded 3 acres of wetland and installed culverts to increase wetland hydrology within the site.
SUCCOR CREEK BRIDGE REPLACEMENT
SOUTH OF ADRIAN, OR
Located in a remote region of Southeast Oregon the Succor Creek Natural Area had a railroad car bridge in need of replacement. Aquatic Contracting demolished the old railroad car bridge, which was hauled away for recycling.
A new pre-fabricated wood bridge was constructed on-site utilizing the existing concrete footings. Construction was in line with ADA standards. The project was completed in conjunction with Oregon State Parks and Western Wood Structures.
MCKAY CREEK FISH PASSAGE AND ENHANCEMENT
PROJECTS AND ALLEN CREEK DAM REMOVAL
For this Design-Build project, the Crooked River Watershed Council selected GeoEngineers and AC to design and construct fish passage improvements, small dam removals, and habitat enhancement measures. The project included the removal of 3 diversion dams while maintaining existing irrigation and allowing for fish passage. Aquatic Contracting also harvested, hauled and installed over 100 trees for habitat and stability. A 160 foot long side channel was constructed along with 10 rock weirs and 180 feet of new irrigation pipe.
Utilizing the design-build process with GeoEngineers, the Crooked River Watershed council created a project that minimized design, administration and permitting costs, provided flexibility during construction, and allowed for AC to satisfy not only client needs but landowner needs as well.
QUILCEDA CREEK CULVERT REPLACEMENT
SNOHOMISH COUNTY, WA
In October of 2008 Aquatic Contracting LLC (AC) was contracted by the Tulalip Tribes to improve fish passage and create additional fish habitat along Quilceda Creek. AC removed a failing culvert, built concrete footings and installed a 40 foot steel bridge. AC then re-built the creek channel to increase sinuosity and flood plain area/capacity. To improve the aquatic and adjacent riparian habitats, AC placed large woody debris throughout the project site. To increase pool-riffle habitat and spawning area, rock weirs were constructed and gravel placed throughout the reach. The entire site was then re-planted with native vegetation.
DETROIT RANGER DISTRICT TREE-TIPPING
AND STREAM ENHANCEMENT
WILLAMETTE NATIONAL FOREST, OR
Working under our multi-year IDIQ contract with the USFS/BLM, AC provided specialty tree-tipping, cable and winch services, tree climbing, and hazard tree falling services to enhance habitat conditions within portions of the North Santiam River, Straight Creek, and Log Creek. As part of this large stream restoration project AC staff climbed, tipped, relocated, and strategically configured over 200 trees, logs, and root wads into instream structures. The structures will provide hiding cover for fish, improve pool creation, dissipate high flows, facilitate woody debris accumulation, and improve spawning gravel recruitment.
AC used specialized mobile yarding equipment and cable and winch methods to minimize riparian disturbance, tipping trees at distances well over 1000 feet from the yarder. Trees and logs were often winched over 100 yards into designated instream structures.
As part of this project, AC staff also fell a 77-inch diameter hazard tree. According to the USFS and ODOT, the tree�s poor condition and significant lean toward Highway 22 posed an unacceptable threat to highway traffic. The tree was estimated to be 130 feet tall, weigh over 90,000 pounds, and have over a 10 degree lean toward the highway. These factors left little room for error. AC climbed and rigged the tree using a series of blocks to increasing pulling power and insure directional fall. As it was cut, the tree was slowly righted, pulled away from the highway, and directed into a side channel of the Santiam River. Although it was unfortunate to see this tree come down, we were pleased that it could be utilized as part of this stream restoration effort.
For additional information on this project, please click on the attached link to view our Tree Tipping and Stream Restoration video.
Detroit Ranger District Tree-Tipping video
NORTH FORK GALES CREEK STREAM RESTORATION
WASHINGTON COUNTY, OR
For this project, AC utilized specialty logging techniques to push over more than 100 live standing 30-inch diameter Douglas-fir trees. The tipped trees with root wads were then transported approximately 1 mile from the source area to Gales Creek. AC staff relocated each log/root wad to create in-stream structures, intertwining the logs together with existing trees and other logs to create pinch points for long term stability.
The project resulted in placement of over 100 logs within 1.2 miles North Fork Gales Creek and the adjacent floodplain. The project reach was devoid of structure and lacked beneficial habitat. The result was greater pool/riffle frequency and increased spawning and rearing area. Targeted species included native Steelhead, Coho and Cutthroat.
This project was completed in conjunction with the Tualatin River Watershed Council, Stimson Timber, and the Oregon Department of Fish and Wildlife.
BEAVER CREEK RESTORATION: MANCHESTER FUEL DEPOT
Working with Mid Sound Fisheries, GeoEngineers and the United States Navy, Aquatic Contracting completed this award winning design/build project over a two-year period.
Development of the Manchester Fuel Depot took place prior to World War II during which the Beaver Creek Floodplain was filled. Beaver creek was forced into a channel, through several fish ladders and then into Puget Sound. This eliminated the Beaver Creek Estuary and channelized the creek for 800 feet.
Aquatic Contracting excavated 20,000 cubic yards of soil to re-create the original floodplain. By cutting through an existing road, 1500 feet of new stream channel was created, reconnecting the original floodplain and estuary. Pools and riffles were constructed along with log and rock placements to create structure and habitat. A 38 x 24 foot arch bridge was placed to re-establish the road. 1200 cubic yards of soil was removed and re-graded to enlarge and enhance the estuary. The lower fish ladder, which kept tidal fluctuation out of lower Beaver Creek for 70 years, was removed. Over 100 logs and rocks were placed throughout the project to provide structure, habitat and stability.
Finally, a large log and rock jam was constructed to direct flow into the newly constructed Beaver Creek channel.
The comprehensive project has won the following awards: 2007 Washington Engineering Excellence Award, 2007 U.S. Fish & Wildlife Service Recognition Award, 2006 Chief of Naval Operations Environmental Award for Environmental Quality- Industrial Installation, 2006 Secretary of Navy Environmental Award for Environmental Quality- Industrial Installation, 2006 Secretary of Defense Environmental Award Honorable Mention.
ELK ROCK ISLAND
OAK RELEASE PROJECT
AC was contracted with the City of Portland to remove, top and/or girdle approximately 35 trees on Elk Rock Island in Milwaukee. Because of accessibility challenges to this island in the Willamette River no heavy equipment could reach the project site. Nearly all of the equipment and materials were hauled to the project area by hand. Trees were directionally felled to minimize damage to existing oaks and sensitive plants. As part of the project a comprehensive spill and environmental protection plan was drafted and implemented to protect existing vegetation and nearby waterways. Several trees were topped to create snags for nesting raptors. The city also selected to utilize AC�s proposal to haul a chipper to the island to chip limbs and debris created by the falling operation. A mini excavator carefully towed the chipper to the island and a large crew was utilized to haul and chip limbs in one day. The City of Portland wrote a letter of commendation for AC�s professionalism, knowledge and innovation throughout the project.
COUGAR CREEK TRAIL RESTORATION AND BRIDGE REPAIR
OCHOCO NATIONAL FOREST
Under our existing Forest Engineering and Road Maintenance (FERM) IDIQ Contract with the USFS, AC was contracted to repair a trail bridge over Cougar Creek, remove another existing trail bridge over Dodd Creek, construct a shallow ford, and then reconstruct trail segments.
KELSEY CREEK RESTORATION: GLENDALE COUNTRY CLUB
Large concrete weirs were constructed in Kelsey Creek in the 1950s in order to slow water flow and decrease erosion. Over the years they eventually became fish passage barriers and changed flow dynamics, which were particularly prevalent in a 1000 foot stretch that flowed through Glendale Country Club. Aquatic Contracting was hired to restore this stretch and enhance fish passage. Construction began by diverting the creek for the entire reach. Stream banks that had eroded and become unstable were re-contoured. Soil lifts and log jams were constructed throughout, increasing bank stability. Over 70 logs were placed with spawning gravel, raising the streambed over 2 feet. This facilitated fish passage and added habitat throughout the stretch. Invasive plants were removed and re-planted with native vegetation. The project was done allowing golf course playability and integrity while enhancing salmon habitat. The project was completed with cooperation from Mid Sound Fisheries, Smayda Engineering and Glendale Country Club.
FISH PASSAGE BYPASS: CROOKED RIVER
WATERSHED COUNCIL/PEOPLE�S IRRIGATION DISTRICT
Aquatic Contracting LLC was contracted by the Crooked River Watershed Council to construct a 350 foot long bypass channel providing fish passage (for reintroduced steelhead) around a 7 foot high, 120 foot wide concrete diversion dam by creating a nature-like fishway. The project included construction of a sheet pile grade control structure, 11 weir/step-pool complexes, 350 feet of new creek channel, a 60 foot long pedestrian bridge, over 2,000 feet of geotextile encased soil wraps, and a log deflection boom. Aquatic Contracting constructed the project during December 2008 and January 2009 and then returned to install additional native plants in March 2009.
Aquatic Contracting received a formal letter of appreciation from the Crooked River Watershed Council for our expertise and responsiveness on this project.
TREE SURVEY FOR THE OREGON ZOO ANIMAL HOSPITAL
AC was contracted by the Oregon Zoo to conduct a tree survey to help with planning, design and permitting of the zoo�s proposed Animal Hospital. AC�s Certified Arborist and a staff scientist documented and tagged all trees greater than 6 inches DBH within the several acre study area. Trees were evaluated for species, size, condition, and damage indicators. Initial hazard tree information was also provided in AC�s written report.
OREGON ZOO SOUTH RAVINE TREE SURVEY
AC was contracted by the Oregon Zoo to conduct a tree survey to help the zoo confirm post construction compliance within the South Ravine construction zone. AC�s Certified Arborist and a staff scientist documented and tagged all trees greater than 6 inches DBH within the study area. Trees were evaluated for species, size, condition, and damage indicators. AC documented survey results in a formal report and provided additional recommendations based on site conditions.
WELCH ROAD WETLAND ASSESSMENT
AC was contracted by R&R Land Development to provide wetland assessment and outline State and Federal permitting and mitigation options for a 5 acre property located west of Gresham.
SHEPHERDS FLAT CENTRAL AND SHEPHERDS FLAT
SOUTH WETLAND ASSESSMENT
GILLIAM & MORROW COUNTIES, OR
AC was contracted by South Hurlburt Wind LLC and Horseshoe Bend Wind LLC to provide wetland consulting services on approximately 150 acres associated with a new alternative energy wind park. Fieldwork was conducted by AC�s botanist and our Professional Wetland Scientist (PWS) using the Arid West Supplement with wetland, water, and all photo/sample plot locations recorded using a GeoXH handheld GPS unit. For this wetland assessment, AC�s AutoCAD/GIS specialist provided GPS and GIS services for preparation of project maps that included all sample plots, photo points, and feature locations.
ALBANY-EUGENE TRANSMISSION LINE REBUILD PROJECT -
VEGETATION, FISH & WILDLIFE RESOURCE TECHNICAL
REPORT, WETLAND ASSESSMENT, AND BIOLOGICAL
LINN & LANE COUNTY, OR
AC was contracted by Parsons Brinkerhoff to provide the Bonneville Power Administration (BPA) with professional wetland, botanical, fisheries, and wildlife consulting services associated with this 32-mile transmission line rebuild project. As part of NEPA planning and permitting efforts, AC staff conducted initial fieldwork and prepared Vegetation, Fish and Wildlife Resource Technical Reports describing existing conditions and constraints along the 32 mile corridor.
AC staff also conducted fieldwork and prepared a wetland assessment documenting potential wetland features and constraints within danger tree removal areas and proposed access roads along the 32-mile project corridor.
Additionally, AC staff prepared a biological assessment for NMFS and USFWS to address potential impacts to ESA-listed fish species including UWR Chinook salmon, UWR steelhead, and Oregon chub. AC staff also prepared a biological assessment for ESA-listed plant species including Nelson�s checkermallow and Bradshaw's lomatium.
METRO ENVIRONMENTAL PERMITTING, CULVERT
REPLACEMENT, AND ROAD DECOMMISSIONING
MULTNOMAH & WASHINGTON COUNTIES, OR
AC was contracted by METRO to prepare applications, coordinate with all state, federal and local agencies, and obtain permits required to remove culverts and decommission abandoned roads at three locations and replace one culvert within Multnomah and Washington Counties. This streamlined the process, allowing METRO to use one company to provide both permitting and construction services.
The culvert removal and road decommissioning projects were accomplished during the 2009 summer in-water work window on North Fork Johnson Creek, Baker Creek, and a tributary to Chicken Creek. The culvert replacement project on a tributary to the Gilbert River also occurred in 2009. In addition to culvert removal and road decommissioning, AC efforts also included placement of LWD, salvage and replacement of existing native vegetation, and erosion/turbidity controls.
SADDLE BUTTE WIND PARK WETLAND/WATERS
DELINEATION AND REPORTING
GILLIAM & MORROW COUNTIES, OR
AC was contracted by Four Mile Canyon Wind LLC and Pilz and Company to provide wetland delineation services on over 15,000 acres proposed for a new alternative energy wind park. Project work was tailored to reflect the very large study area, and it included GIS pre-field site analysis using aerial photographs to locate suspect wetland areas and better focus field efforts. Delineation fieldwork was conducted by AC�s botanist and our Professional Wetland Scientist (PWS) using the Arid West Supplement with wetland, water, and all photo/sample plot locations recorded using a GeoXH handheld GPS unit. AC staff prepared the draft and final wetland delineation reports which included extensive photo documentation of site conditions. AC�s AutoCAD/GIS specialist provided GPS and GIS services for preparation of all agency required delineation and site maps. The report exceeded client expectations and was quickly concurred with by state regulatory agency staff.
WILDCAT PROPERTY HABITAT ASSESSMENT AND
STREAM IMPROVEMENT PLAN
CLACKAMAS COUNTY, OR
AC was selected by Clackamas County Parks and Forest to evaluate two watersheds and over 1500 acres of county industrial forestland. As part of an effort to determine opportunities for stream enhancement, AC reviewed the properties and provided recommendations and cost estimates for fish passage improvements, culvert/bridge installation, instream habitat enhancements, and stormwater management opportunities.
SPRING PARK NATURAL AREA ENHANCEMENT PROJECT PLANNING
AC was contracted by the Clackamas County Parks Department to assist with project planning and construction feasibility, construction cost estimating, and permitting requirements for this multi-faceted project that proposes in-stream LWD placement in a backwater alcove of the Willamette River, restoration of upland and wetland habitats throughout the Park, and environmental education components. AC tasks included site visits with project engineers and project funders, as well as regulatory agency coordination meetings to clarify State removal-fill permitting, Federal Clean Water Act Section 404 permitting, Federal Section 10 permitting under the Rivers and Harbors Act, and Endangered Species Act permitting options to streamline project design and implementation.
BPA ALVEY-FAIRVIEW REBUILD WOOD POLE
Lane, Douglas, Coos Counties
AC was contracted by Parsons Brinkerhoff to provide the Bonneville Power Administration (BPA) with professional fisheries consulting services associated with this 98-mile transmission line rebuild project that extends from Eugene south to Coquille. As part of NEPA planning and project permitting efforts, AC staff conducted initial fieldwork and prepared documentation for the Environmental Assessment for the project including fisheries technical reports.
AC staff also conducted fisheries fieldwork for culvert and fish passage assessments, documenting site and channel conditions and making recommendations for bridge, culvert, and ford replacements associated with new road construction and existing road improvements. AC staff also prepared biological assessments for NMFS and USFWS to address potential impacts to ESA-listed fish species including UWR Chinook salmon, Oregon Coast Coho, and Oregon chub. As part of the project AC also provided design reviews for proposed culverts and bridges on fish streams to facilitate ODFW and NMFS Fish Passage Engineer approvals, prepared ODFW Fish Passage Plans for Stream-Road Crossings, conducted specifications reviews, and prepared planting plans and specifications for site restoration and revegetation.
BPA LANE - WENDSON REBUILD WOOD POLE
LANE COUNTY, OR
AC was contracted by Parsons Brinkerhoff to provide the Bonneville Power Administration (BPA) with professional fisheries consulting services associated with this 42-mile transmission line rebuild project that extends from Eugene west to Florence. As part of NEPA planning and project permitting efforts, AC staff conducted initial fieldwork and prepared documentation for the Environmental Assessment for the project including fisheries technical reports. AC staff also conducted fisheries fieldwork for culvert and fish passage assessments, documenting site and channel conditions and making recommendations for bridge, culvert, and ford replacements associated with new road construction and existing road improvements.
AC staff is preparing biological assessments and ESA compliance documentation for NMFS and USFWS to address potential impacts to ESA-listed fish species including Oregon Coast Coho and Oregon chub. As part of the project AC is providing design reviews for proposed culverts and bridges on fish streams to facilitate ODFW and NMFS Fish Passage Engineer approvals, preparing ODFW Fish Passage Plans for Stream-Road Crossings, and providing specifications reviews for stream crossing plans and site restoration measures.
BPA HILLS CREEK - LOOKOUT POINT
TRANSMISSION LINE REBUILD PROJECT
LANE COUNTY, OR
AC was contracted by Parsons Brinkerhoff to provide the Bonneville Power Administration (BPA) with professional fisheries and wildlife consulting services associated with this 27-mile transmission line rebuild project located east of Eugene that extends from Lowell southeast to Oakridge. As part of NEPA planning and project permitting efforts, AC staff is conducting fieldwork and preparing documentation for the Environmental Assessment for the project. Fieldwork includes culvert and fish passage assessments, documenting site and channel conditions and making recommendations for bridge, culvert, and ford replacements associated with new road construction and existing road improvements. After coordination with the regulatory agencies, AC staff will prepare biological assessments and ESA compliance documentation for NMFS and USFWS to address potential impacts to ESA-listed fish species including UWR Chinook salmon, Bull trout, and Oregon chub. For this project, AC is also providing additional wildlife consulting services.