napa river o&m dredging project planned dredging

US Army Corps of Engineers BUILDING STRONG®

Napa River O&M Dredging Project Planned Dredging Activities for 2016

Rick Thomasser, Operations Manager, Napa County Flood Control and Water Conservation District

Pamela Patton, Project Manager, San Francisco District, USACE

July 12, 2016

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Agenda • Background • History • Project Overview • Disposal Sites • Schedule • Dredging Areas • Question/Answers

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Background What will the project do? Dredging the Napa River Navigation Channel is required periodically in order to maintain safe navigation of both commercial and recreational vessels.

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History of the Napa River Navigation Channel

Footprint of Project

Frequency of Dredging

Placement Sites

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Project Map

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Overview

The project starts at 3rd St. Bridge in Napa and ends at the confluence with Asylum Slough, and the lower channel that ends just upstream of the HWY 37 Bridge in Vallejo.

Nine feet with an additional one

foot of over depth throughout both the lower and upper channel planned dredge areas.

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Disposal Sites The disposal sites that will be utilized in support of this year’s dredging effort will be the Flood District’s Imola 3rd Street site and Napa Pipe.

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Schedule

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Aug 1

Nov 30

Nov 1

Oct 1

Sept 1

Pre-dredging Activities: Environmental Approvals Dredging Contract Solicitation Contract Award

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July 1

Dredging Contract: Start of Dredging: ~ Mid-Sept to early Oct. Duration: ~ 6-9 weeks Daily Operations:

3rd Street- Tulocay Creek: 7:00 am-11:00 pm Below Tulocay Creek: 24-hrs/day

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DREDGING AREAS

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Q & A Contact Info: Pamela Patton USACE – San Francisco District 1455 Market Street San Francisco, CA 94103 (415) 329-9505 Pamela.o.patton@usace.army.mil