Silvergate Mitigation Bank
Location: 1 mile west of Sheridan, Placer County, California
Client: Wildlands, Inc. & Sheridan Mitigation Corp
Project Type: Wetlands and Endangered Species Mitigation Bank
Project description: Originally known as the Wildlands Mitigtion Bank, the 655 acre Silvergate Mitigation Bank supports over 57 acres of created vernal pool habitat, 216 acres of seasonal-perennial marsh complex, 35 acres of riparian wetland/woodland habitat, 65 acres of VELB shrublands, and 310 acres of restored annual-perennial grasslands. The site supports a myriad of native plants and wildlife for at least a part of their life cycles including 19 state and federally listed species.
This project is the first mitigation bank built in California and was designed, constructed and established by Restoration Resources under contract with Wildlands, Inc. Riley Swift was co-owner and president of Wildlands, Inc. and sole owner and president of Sierra View Landscape, Inc. DBA Restoration Resources at the time. For two years prior to the onset of habitat restoration activities in 1994, Restoration Resources conducted site assessments,soils analyses, topographic mapping, habitat restoration design, and conceptual habitat development plan preparation to facilitate state and federal agency review and approval of the bank.
As the prime contractor, Restoration Resources provided all earthmoving work, water control structure design and construction, irrigation system design and construction, native herbaceous plant seeding, native riparian and upland woody plant selection and installation, road construction, fencing, and habitat establishment maintenance including irrigation, weed control, animal damage control, and plant replacement from 1994 through 2002. In 2003, Riley Swift became the sole owner and president of Sheridan Mitigation Corp which holds fee title to the property and he renamed it Silvergate Mitigation Bank. Restoration Resources continues to provide on-going maintenance services on an as needed basis.
American River -Sunrise Side Channel
Location: American River, downstream of the Hazel Avenue overcrossing, Sacramento, Califonria
Client: Sacramento Region Water Forum
Project Type: Salmonid Spawning and Stream Restoration
Project description: Restoration Resources participated in the design and served as the prime contractor for the Sacramento Water Forum, with support from partners including the U.S. Bureau of Reclamation, California Department of Fish and Game (DFG), the Sacramento Area Flood Control Agency, California State University at Sacramento, Sacramento County Parks, and local consultants and contractors, to modify a side channel of the American River downstream of the Hazel Avenue overcrossing so that flow variability would increase spawning and rearing habitat for steelhead.
Restoration Resources dewatered, excavated, and placed grade control and spawning gravel to restore approximately 1,200 linear feet of channel including the filling of existing holes and depressions where juvenile salmonids had previously been stranded. The project area included approximately 7.3 acres, and was re-vegetated with native plants and maintained upon the completion of construction.
Willits Enhancement Wetlands
Location: Willits, CA
Client: City of Willits
Project Type: Mitigation Wetland Planting, and Bank Stabilization
Project description: In 2010 Restoration Resources was contracted to provide Wetland enhancements and stabilization to the mitigation lands surrounding the Willits Wastewater Treatment Plant. 20 acres of the site were drill seeded with Native Seed mix and 500 Native Riparian plants and 60 Willow Cuttings were planted.
Restoration Resources also designed and implemented a temporary drip irrigation system to provide water to the newly installed native plants. Approximately 30,000 square feet of biodegradable erosion control blankets and other erosion control measures were installed for stream bank and levee stabilization and in addition 5.94 acres were hydroseeded.
Feather River Setback Levee Habitat Enhancement Project
Location: Feather River Levee, Sutter County, California
Client: Sutter County Levee District No. 1
Project Type: Valley Elderberry Longhorn Beetle Habitat Enhancement
Project description: Restoration Resources successfully developed and implemented native planting and irrigation plans for approximately 20 acres of riparian elderberry scrub restoration to mitigate for impacts to the Valley Elderberry Longhorn Beetle as part of the Feather River Setback Levee and Habitat Enhancement Project at Star Bend in Sutter County, California. Approximately 55 acres of former orchard and levee were converted to Feather River floodplain.
Highway 149/70 Mitigation Project
Location: Butte County, California
Client: Butte County Association of Governments and California Department of Transportation
Project Type: Wetland, Vernal Pool, and Endangered Species Mitigation
Project description: Restoration Resources was selected by BCAG and Caltrans through two RFP processes to provide specific fresh water marsh and vernal pool mitigation for impacts resulting from the Butte Highway 70/149/99/191 Improvement Project.
Phase 1 of the project required conversion of an existing olive orchard to 23 acres of high quality emergent wetland, riparian, and oak woodland habitat and providing for successful establishment, habitat management, and perpetual protection. Phase 2 required locating, evaluating, and purchase of over 430 acres of lands suitable for vernal pool creation, followed by all design, permitting, construction, habitat management, and perpetual protection of the mitigation lands.
This project was awarded the ď2008 Caltrans Environmental Project of the Year.Ē
Pavon Creek / Scow Canyon Mitigation Project
Location: Pavon Creek and Scow Canyon surrounding San Pablo Dam and the Kennedy Grove Regional Recreation Area in Contra Costa County, California
Client: East Bay Municipal Utility District
Project Type: Stream channel restoration and stabilization
Project description: Restoration Resources constructed, planted, irrigated and maintained a series of mitigation wetlands and stabilized and restored several stream channels with bioengineered channel structures; vortex weirs; rock weirs; log jams; willow fascines; crib walls; and planting, irrigation, and maintenance over a 3 year period.
Natomas Levee Improvement Project
Location: Sacramento River Levee surrounding the Sacramento International Airport and Natomas Community in South Sutter and Northern Sacramento Counties, California
Client: Sacramento Regional Flood Control Agency (SAFCA)
Project Type: Floodplain and Levee Restoration / Endangered Species and Wetland Mitigation
Project description: For almost two decades, Restoration Resources has provided SAFCA with habitat design, construction, maintenance, and monitoring of created and restored floodplain and levee habitats associated with its mission to address the Sacramento Areaís vulnerability to catastrophic flooding from the Sacramento and American Rivers. These projects include establishment of California native grasses on newly constructed levees, Burrowing Owl habitat mitigation, stream bank protection and environmental restoration and mitigation.
Auburn Ravine Restoration Project
Location: Lincoln, California
Client: Del Webb
Project Type: Wetland Mitigation and Riparian and Anadromous Fish Habitat Restoration
Project description: Between 2001 and 2006, Restoration Resources designed and constructed approximately 70 acres of floodplain wetland/riparian complex, anadromous fish rearing habitat, relocated stream channel, and seasonal and perennial wetlands within the Auburn Ravine and Ingram Slough watershed corridors. This work was associated with the 3,200 acre Sun City Lincoln Hills residential development project.
A 38 acre portion of the floodplain of Auburn Ravine was re-attached to the existing downcut channel through excavation and construction of in-stream grade controls and armored overflow weirs. This site serves as rearing habitat for juvenile salmon and steelhead trout and includes open water, perennial and seasonal marsh complex, and extensive riparian wetland and woodland habitat. Within the Ingram Sough drainage approximately 1.25 miles of channel was relocated and provided with grade control structures and a 200-350 feet wide native wetland and upland habitat corridor was established.
In other unnamed drainages numerous in-channel and off-channel perennial and seasonal wetlands were created by excavation, implementation of grade control, and constructing armored inlet and outlet weirs. All created and restored habitats were seeded with native perennial herbaceous species, planted with native riparian and upland trees, shrubs, and vines and protected with appropriate erosion control BMPs. All habitat restoration sites were maintained by Restoration Resources for 3 years and monitored for 3-5 years ensuring that all applicable performance criteria were met.