arroyo seco ecosystem restoration integrated feasibility study€¦ · 29/04/2015  · microsoft...

OREGON

IDAHO

WYOMING

COLORADO

NEVADA

NEW MEXICO

TEXAS

UTAH

ARIZONA

CALIFORNIA

US Army Corps of Engineers

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Arroyo SecoEcosystem RestorationIntegrated Feasibility Study

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• Study Overview• Background• Civil Works/SMART Planning Process• Schedule• Preliminary Study Objectives• Measures and Alternatives

• CEQA Overview

Meeting Objectives

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Federal – Local Partnership

U.S. Army Corps of EngineersLead Agency

Los Angeles CountyFlood Control District

Lead Local Sponsor

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Local Partnerships

Council of ArroyoSeco Agencies

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2005Partnershipbetween Corpsand LACFCD

2008PartnershipbetweenLACFCD andlocal agencies

2002Corps completesArroyo SecoWatershedReconnaissanceStudy

2011Corps completes ArroyoSeco WatershedFeasibility ScopingMeeting Documentation(Baseline Conditions)

2013Corps holdsrescoping charetteworkshop

Study Timeline

2017Corps to submitFinal Report

2014Corps holds NEPA PublicScoping Meeting(Start of 3-year Studyperiod)

2012CorpsmodernizesPlanningprocess -SMART

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ARROYO SECO ECOSYSTEMRESTORATION FEASIBILITY STUDY

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RECONNAISSANCEPHASE

REPORT

FEASIBILITYPHASE

REPORT

FINAL DESIGN

CONSTRUCTIONDOCUMENTS

CONSTRUCTION

PROJECT

OPERATION ANDMAINTENANCE

(BY LOCALSPONSOR)

Civil Works Process

CongressionalAuthorization

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5

4

3

2

1

In Progress

Six Step Planning Process

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SMART Process

RECONNAISSANCEPHASE

REPORT

RECONNAISSANCEPHASE

REPORT

FEASIBILITYPHASE

REPORT

FINAL DESIGN

CONSTRUCTIONDOCUMENTS

FINAL DESIGN

CONSTRUCTIONDOCUMENTS

CONSTRUCTION

PROJECT

CONSTRUCTION

PROJECT

OPERATION ANDMAINTENANCE

(BY LOCALSPONSOR)

OPERATION ANDMAINTENANCE

(BY LOCALSPONSOR)

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Milestones Date

Charette November 2013

Review Plan approved August 2014

Alternative Milestone May 2015

Tentatively Selected Plan March 2016

Agency Decision Milestone September 2016

Submit Final Report March 2017

CWRB May 2017

Signed Chief’s Report June 2017

Termination Date August 2017

Study Schedule

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• Decision document

• Includes

• Recommended action

• Cost estimate for action

• NEPA and CEQA document

• Leads to request for Congressional authorization forfunding towards design and construction

Integrated Feasibility Study Report

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Those restoration opportunities that are associated withwetlands, riparian and other floodplain and aquaticsystems are most appropriate for Corps involvement.

Ecosystem Restoration Fundamentals

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Almost complete loss of stream conditions (structure andfunction) that support aquatic species & their habitats.

Identified Problem

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Restore quality and quantity of aquatic, wetlands, andriparian habitats

Restore natural channel sinuosity

Improve Aquatic Habitat

Enhance Recreational Opportunities (compatible withrestoration; passive; example – nature trail, educationalsignage)

Planning Objective and Study Goals

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Maintain flood risk management function/capability of existing ArroyoSeco system

Maintain Devil’s Gate Dam flood storage capacity

Avoid Hazardous and Toxic Waste (HTW) site at Jet Propulsion Lab

Minimize impacts to transportation infrastructure such as highwaysand bridges

Minimize adverse impacts to nearby residences, especially historicand culturally significant districts and properties

Minimize impacts to existing facilities and infrastructure such asRose Bowl

Planning Constraints andConsiderations

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CHAP evaluation –Combined HabitatAssessment Protocol

Allows comparison ofquality of existinghabitat versusalternatives

Assists in selection ofthe recommendedplan

Habitat Evaluation

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Study Location

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Arroyo Seco Watershed

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StudyReaches

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Reach 1

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Reach 2

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Reach 3

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Reach 4

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Reach 5

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Reach 6

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Reach 7

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Reach 8

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No Action: Under this alternative, the Corps wouldtake no action to restore any ecosystem functions orvalues within the Arroyo Seco study area.

Focused Array of Alternatives(Under Evaluation)

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Parallel Natural System: Low-Flow Channel

Focused Array of Alternatives(Under Evaluation)

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Parallel Natural System: RCB Culverts with low-flowchannel

Focused Array of Alternatives(Under Evaluation)

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Notched Side-Walls with low-flow channel

Focused Array of Alternatives(Under Evaluation)

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Floodplain Benching

Focused Array of Alternatives(Under Evaluation)

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Sheet-pile Bank Protection with Floodplain Benching

Focused Array of Alternatives(Under Evaluation)

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California Environmental Quality Act(CEQA)

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CEQA Environmental Impact Report(EIR) Process

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Notice of Preparation (NOP) and scoping meeting

Draft EIR

45-day review and comment period

Public meeting

Public Participation

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Tentatively Selected Plan March 2016

Draft Study/EIS/EIRDocument• 45 day Public Review

Period• Public Meeting

June – July 2016

Agency Decision Milestone September 2016

Milestones Date

Charette November 2013

Review Plan approved August 2014

Alternative Milestone May 2015

Tentatively Selected Plan March 2016

Agency Decision Milestone September 2016

Submit Final Report March 2017

CWRB May 2017

Signed Chief’s Report June 2017

Termination Date August 2017

Schedule

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Tentatively Selected Plan March 2016

Draft Study/EIS/EIRDocument• 45 day Public Review

Period• Public Meeting

June – July 2016

Agency Decision Milestone September 2016

Schedule

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Aesthetics

Agriculture and ForestryResources

Air Quality

Biological Resources

Cultural Resources

Geology & Soils

Greenhouse Gas Emissions

Hazards & HazardousMaterials

Cumulative Impacts

Hydrology & Water Quality

Land Use & Planning

Mineral Resources

Noise

Population & Housing

Public Services

Recreation

Traffic & Transportation

Utilities & Service Systems

Mandatory Findings ofSignificance

Issues to be Analyzed

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Public ParticipationNOP and Scoping Meeting

NOP can be downloaded here: goo.gl/XEhAKp

Fill out comment response forms

Limit oral comments to three minutes

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County of Los Angeles Department of Public Works

Watershed Management Division, 11th Floor

Attention: Mr. Patrick Goodfellow

900 South Fremont Avenue

Alhambra, CA 91803

or by email to: pgoodfellow@dpw.lacounty.gov

Submit comments by May 23, 2015

Public ParticipationWritten Comments

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Questions

U.S. ArmyCorps of Engineers

Los Angeles CountyFlood Control District

Priyanka Wadhawan915 Wilshire Blvd, Suite 980Los Angeles, CA 90017(213) 452-3802Priyanka.wadhawan@usace.army.mi

Patrick Goodfellow900 S. Fremont AvenueAlhambra, CA 91803(626) 458-7034pgoodfellow@dpw.lacounty.gov

For more information on the Study: