Fish Passage and Habitat Restoration


Projects


NE 192nd Street Culvert Replacement

12/15/17

OCI completed the alternatives analysis design and construction documents (PS&E) for a 60-foot long 12-foot by 7-foot bottomless precast culvert for Little Swamp Creek at the NE 192nd Street crossing in Kenmore, WA. The culvert will relieve persistent flooding and meets WDFW fish passage standards. The project includes: fish passable culvert design, XPSWMM H&H analysis,
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Thornton Creek Confluence Project

2/28/14

Location: Seattle, WA OCI was responsible for the TESC and stream bypass plan for this flood management and habitat restoration design project. Deliverables included plans and detail sheets, specifications, engineer’s cost estimate, and the Stormwater Pollution Prevention Plan (SWPPP). Challenges included:  bypass of a flashy, urban stream and isolation of the sediment pond during dredging.
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China Creek, Centralia College

2/25/14

Location: Centralia, WA OCI was responsible for the hydrologic, hydraulic and morphology analysis for the improvements to China Creek at Centralia College. Centralia College plans included improvements to China Creek to a more natural cross section. OCI determined the drainage basin area, created a WWHM hydrology model, checked the calculations with the USGS Regression Equation,
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Kelsey Creek at NE 8th Street Fish Passage Culvert Improvements

2/25/14

Location: Bellevue, WA OCI was selected by the City of Bellevue as the prime consultant to complete full plans, specifications and engineer’s estimate of the proposed fish passage improvements within Kelsey Creek at the NE 8th Street culvert. The OCI team was responsible for the data collection and site reconnaissance, the preliminary design and alternatives
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Lower Taylor Creek Culvert Replacement and Habitat Improvement Project

2/25/14

Location: Seattle, WA OCI performed the Lower Taylor Creek analysis of alternatives for Seattle Public Utilities to improve fish passage, alleviate flooding, and stabilize the stream system. The project began with OCI leading a brainstorming session where OCI, Seattle Public Utilities, and Project Stakeholders identified alternatives and assessed the triple bottom line to identify alternatives
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