South Platte Resiliency Company (SPRC)
Partnering to Protect and Restore the South Platte River
APTIM and Olsson, along with key strategic partners, have teamed to support the restoration of stream and floodplain habitats along the South Platte.
Together, we offer:
- A Denver-based program management team backed by local resources and technical experts
- Experience executing projects for the City and County of Denver, U.S. Army Corps of Engineers (USACE), and key project stakeholders, including the Mile High Flood District
- Expertise and experience in South Platte wetland habitat restoration, flood mitigation and resiliency, and recreation and environmental revitalization planning
Managing Complexity for Extraordinary Outcomes
30+ years environmental and infrastructure support for USACE, including the Omaha District's $1B Rapid Disaster Infrastructure Program
For more than 30 years APTIM has delivered complex, high-profile projects for government clients, including managing the $250 million construction of six levees/berms for USACE to mitigate the threat of encroaching oil to sensitive areas and wildlife along Louisiana’s coast. APTIM also managed more than $50 million worth of projects under the Comprehensive Everglades Restoration Program—developing the world’s largest man-made wetland (16,500 acres) and constructing 39 miles of levees, 21 miles of canals, over 50 culvert structures, and multiple reinforced concrete bridges.
- Personnel: 4,100
- Offices: 38
- Local Presence: Greenwood Village, Colorado
- Ongoing Contracts: City and County of Denver and USACE Omaha
- Featured Program: Award-winning small, woman-owned, and disadvantaged business outreach
- Core Competencies: Program management, construction management, ecosystem restoration, environmental remediation, and flood control and mitigation
Missouri River L-575 Levee Restoration
APTIM is executing $200 million in time-critical repairs for the USACE Omaha District along the 40-mile L-575 levee to mitigate damage caused by record flooding. Milestones include closure of four major breaches with the placement of 1.3 million cubic yards of backfill and 33,000 tons of riprap; installation of 468,000 SF of sheet pile; reconstruction of levee crests and slopes; repair of riverside scours and seepage berms; inspection and repair of six pump stations; replacement of 195 wells; inspection, cleanout, and repair of 32 drainage structures; and rehabilitation and reconstruction of 70,000 feet of levee toe drains without a lost-time safety incident.
Inner Harbor Navigation Canal Flood Control Structure
APTIM managed the $1.2 billion construction of the largest design-build civil works project in USACE history. At 10,000 feet long and 26 feet high, the Inner Harbor Navigation Canal flood control structure includes three navigable gates and provides 100-year level storm surge protection for the greater New Orleans area. APTIM oversaw up to 2,300 personnel at the project’s peak, at times working 24/7 to complete the project ahead of schedule. APTIM investigated various project alternatives in compliance with NEPA and implemented measures to minimize environmental impact, including erosion controls, use of a floodwall instead of levee to reduce the project’s footprint, and beneficial reuse of dredged material to create conditions suitable for future marsh habitats.
Committed to a resilient and sustainable environment
180 Drainageway-related projects in coordination with the Mile High Flood District, including the South Platte River Flood Hazard Area Delineation
Olsson is an industry-leading design and engineering firm whose primary team has been together for 17 years. They provide long-term solutions to clients’ water-related challenges, including urban stormwater design and management, watershed master planning, stream restoration, flood control, hydrologic analyses, and floodplain modeling. Olsson has executed 180 projects in coordination with Colorado’s Mile High Flood District, demonstrating an ability to work collaboratively with local stakeholders, such as the City and County of Denver, Denver Water, and CDOT.
- Personnel: 1,800
- Offices: 30
- Local Presence: Denver, Colorado Springs, and Loveland, Colorado
- Ongoing Contracts: City and County of Denver and USACE Omaha
- History: Successful collaboration with key project stakeholders
- Core Competencies: Design/engineering; program/construction management; urban planning; public outreach; environmental; permitting/regulatory support; geomorphology; hydrology; and civil, water resource, and water/wastewater infrastructure
Emergency Watershed Protection Program
Following devastating floods in 2013 that damaged many routes into mountain towns and popular recreational destinations, Olsson designed improvements for three project reaches along approximately 1.25 miles of Coal Creek Canyon in Larimer, Jefferson, Weld, and El Paso Counties, Colorado—including removing unstable sediment and establishing vegetated floodplains. The project also realigned Coal Creek to better cross under Highway 72, provided rock toe protection to stabilize stream banks throughout the reaches, and included installation of a stacked boulder wall. Following design, Olsson provided construction oversight to implement flood recovery measures within riparian corridors at each project site.
Jordan Creek Renewal
Olsson is providing comprehensive engineering services for the city of Springfield, Missouri, to improve water quality, ensure flood control, and create an environment that blends urban and natural components along Jordan Creek. The work includes concrete box culvert removal; soil remediation; bridge restoration; flood elevation reduction; and construction of an urban plaza, urban channel, and water quality improvements to restore value to the area and promote vitality and recreation. This work is a continuation of Olsson's dedication to improving drainage and flood control along large swaths of Jordan Creek, which has included partnering with USACE and the City of Springfield to provide channel design and hydraulic analysis to reduce flood damages in select areas of the city.
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