Pipelines

75 MGD Transmission Conduit for City of Salem Public Works Department, Stayton, Oregon.
The 75 MGD Transmission Conduit project involves replacing deteriorating transmission pipelines with new larger diameter water lines. The project was divided into phases, where Phase I includes the North Santiam River and the Santiam Water Control District bypass channel crossings. ES&A obtained USACE/DSL joint Section 404/Removal-Fill permit applications, provided agency liaison services with USACE, DSL, USFWS, NMFS and ODFW. Additional services included providing construction oversight associated with natural resource and fisheries issues, responding to contractor questions, and coordinating with the landscape contractor prior and subsequent to implementing the mitigation plan.

Kuebler Boulevard 36-Inch Potable Water Supply Intertie for City of Salem Public Works Department, Salem, Oregon.
ES&A staff conducted field evaluations and prepared technical report summarizing wetland and sensitive species impacts for three alternative intertie pipeline alignments. The purpose of the project is to provide a 36-inch intertie between the existing 48-inch and 36-inch water transmission mains, which are located in the southeast section of the City of Salem. ES&A performed additional resource evaluations including conducting wetlands delineations and assessing impacts to listed species and species proposed for listing for the preferred alignment. Other tasks included preparing and submitting USACE/DSL joint Section 404/Removal-Fill and Union Pacific Railroad crossing/encroachment permit applications. The proposed alignment crossed Mill Creek, which contains three Endangered Species Act (ESA) listed fish species.

Miles Crossing Biological Assessment for Miles Crossing Sanitary Sewer District, Clatsop County, Oregon.
The Miles Crossing and Jeffers community is an unincorporated area south of Astoria, Oregon, which currently has no sewer service. Homes and businesses in the community use on-site treatment systems (septic tanks) for wastewater disposal. High groundwater levels in the community reduce the effectiveness of the on-site systems, and many of the systems are in marginal or failed condition. ES&A prepared USFWS and NOAA Fisheries Biological Assessments for the Miles Crossing Sanitary Sewer District project in Clatsop County, Oregon. Species evaluated included listed species (bald eagle, marbled murrelet, brown pelican, Columbian white-tailed deer, Oregon silverspot butterfly, water howellia, 5 ESU’s of steelhead, 1 ESU of sockeye salmon, 5 ESU’s of chinook salmon, 1 ESU of chum salmon, 3 ESU’s of coho salmon, coastal cutthroat trout). Also, per Rural Utilities District standards, 23 candidate species and species of concern were included in the impact evaluation.

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