Scoping Meeting

Yuba Goldfields200-Year Flood Protection ProjectEnvironmental Impact Report

June 23, 2014

Meeting Agenda

• Welcome and Introductions• Meeting Objective• Project Background • Proposed Project Alternatives• Scoping and CEQA Process• Environmental Issues • Public Comments and Input

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Introductions

Three Rivers Levee Improvement AuthorityPaul Brunner, Executive Director

Downey BrandAndrea Clark, Legal Counsel

MBK EngineersLarry Dacus, P.E., Project Engineer

AECOMAndrea Shephard, Ph.D., Environmental Project Manager

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Meeting Objective

Seek public and agency input on the scope and content of the EIR, including

alternatives

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Proposed Background

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Project Location

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Project Need

• Yuba River actively eroding south bank tailings mound.

• Landform changes in Goldfields have affected flow paths and made it easier for floodwaters to flow through the Goldfields.

• Areas that were thought to have 200-year flood protection are still at risk.

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Project Purpose

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Reduce flood risk to properties in RD 784 and TRLIA assessment districts by providing sustainable200-year flood protection.

Source: Data compiled by AECOM in 2014

Project Objectives

• Prevent 200-yr flood waters from flowing through Goldfields and flanking State Plan of Flood Control levee system.

• Implement long term sustainable solution by 2025.

• Minimize impacts on aggregate mining operations.

• Minimize impacts on gold dredging operations.

• Minimize impacts on environmental resources.

• Provide environmental benefits, if feasible.

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Proposed Project Alternatives

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Project Alternatives

• Four (4) Action Alternatives plus the No-Project Alternative to be evaluated at equal level of detail in EIR.

• Alternatives 1, 2, and 3 – Construct embankment within the Goldfields using existing dredge tailings.

• Alternative 4 – Construct engineered levee south of the Goldfields using material imported from nearby.

• All alternatives would meet USACE and DWR urban levee design criteria for 200-year flood protection.

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Project Alternatives

Alternative 1: 100-Year Project Enlargement9.0 mile embankment 331 acres in Goldfields

Alternative 2: West-Side Goldfields Boundary Alignment8.8 mile embankment 317 acres in Goldfields

Alternative 3: South Bank Yuba River Alignment 9.1 mile embankment 291 acres in Goldfields

Alternative 4: Levee South of the Goldfields3.5 mile embankment 199 acres in Goldfields

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Project Alternatives

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Alternatives 1, 2, and 3200-Year Embankment in Goldfields

Source: TRLIA 2013, adapted by AECOM in 2014

• Regular O&M: inspections, weed abatement, surface patrol road maintenance.

• During High Flow Periods: Surface road patrols every 4 hours to identify/address potential flooding issues

Alternative 3Relocation of Waterway 13

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Source: TRLIA 2013, adapted by AECOM in 2014

Source: TRLIA 2013, adapted by AECOM in 2014

Fish barrier at New Outlet Scour Protection

• Will require periodic repair and replacement. • Expected design life of 50 years.

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Alternative 4200-Year Levee South of Goldfields

Source: TRLIA 2013, adapted by AECOM in 2014

• Regular O&M: Same as other alternatives plus management of vegetative cover on levee side slopes, operation and annual maintenance of pipe and gates at YCWA canal crossing.

• During High Flow Periods: Surface road patrols every 4 hours to identify/address potential flooding issues

No-Project Alternative

• 200-year flood protection solution not built.

• 100-year flood protection solution built.

• Decreased flood inundation benefits of TRLIA 200-Year Flood Protection Program.

• Portions of RD 784 and TRLIA assessment districts may be mapped into FEMA floodplains.

• Residents have to purchase flood insurance.

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CEQA Review Process

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Purpose of Scoping

• Inform public and agencies

• Receive public/agency input

• Help define project

• Help identify range of alternatives

• Help identify environmental effects to be evaluated

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Environmental Review Schedule

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Notice of Preparation of an EIR June 13, 2014

Scoping Meeting June 23, 2014

Scoping Period Ends July 14, 2014

Notice of Availability/Draft EIR August 2014

Public Review 45 days

Response to Comments/Final EIR November 2014

Commenting Agency Review 10 days

EIR CertificationProject Decision

FindingsOverriding ConsiderationsMitigation Monitoring Plan

Notice of Determination

November/December 2014

Permitting 2015

Opportunities for Input

Scoping Meeting Today

NOP 30-Day Comment Period June 13 – July 14

Draft EIR 45-Day Public Review Period August/September

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Issue Areas to be Addressed

• Aesthetics• Agricultural and Forestry

Resources• Air Quality• Biological Resources• Cultural Resources• Geology/Soils/Minerals/

Paleo Resources• Greenhouse Gas

Emissions

• Hazards and Hazardous Materials

• Hydrology/Water Quality• Land Use/Population and

Housing• Noise• Recreational Resources• Transportation/Traffic• Utilities and Public

Services

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Project Alternatives

How do you participate?

• Present your views today.

Please focus on the scope of the project (i.e. project elements and alternatives & environmental effects and mitigation).

• Provide written comments on the NOP today or to TRLIA by 5 pm, July 14, 2014.

Paul Brunner, TRLIA

1114 Yuba Street, Suite 218, Marysville, CA 95901

Fax: (530) 749-6990 Email: Pbrunner@co.yuba.ca.us

• Review and comment on the Draft EIR.

• Contact TRLIA throughout the process.

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THANK YOU