INTRO

Tahoe Keys Lagoons Aquatic Weed Control Methods Test

Project Alternatives

Dennis M. Zabaglo

Aquatic Resources Program Manager

Regional Plan Implementation Committee

October 23, 2019

• Highest Priority Location for AIS

• Stakeholder Committee

• Public Engagement

• Endorsement of Alternatives

Tahoe Keys Lagoons

Number of Commenters

Number of Comments

Source Individual Flipchart/Group

Email 40 204

June Scoping Meeting 3 4 44

July Scoping Meeting 1 1 37

SCC 26

Total 44 209 107

316

Scoping Comments

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Comment Category

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Comment Themes

The Process• Balancing information• Developing & Applying

criteria• Working with Applicant &

Stakeholders• Project Description /

Alternatives for analysis

Proposed Project-Control Methods Test• Group A methods• Comprehensive testing

program• Stand alone and in

combination

Non-chemical Only Treatments• UV light

• Laminar Flow Aeration

Lagoon Modifications• Dredge

• Remove organic layer, roots and turions

• Substrate replacement • Less suitable habitat

No Action• Status Quo• Risk to Lake?

Control Methods Test

Proposed Project

Stand Alone Tests

HerbicidesUV-C Light

LFA

Combination Testing

Herbicides + UV-C

Non-Chemical Only

DredgeReplace

Substrate

No Action Alternative

UV-C LightLFA

All Test Elements Paired with Controls

Tahoe Keys Aquatic Weeds Control Methods Test Alternatives

Lagoon Modifications

Status Quo

Methods not included• Filling in the Keys

• Goals & Objectives• Feasibility

• Rotovation• Impacts

• Bio-Controls• Feasibility• Impacts

Upcoming Milestones• Scoping Report October 31, 2019• Admin Draft of EIS/EIR February 12, 2020• Draft EIS/EIR June 22, 2020• Public Comment DEIS/DEIR July 22, 2020• Response to Comments September 22, 2020• Final EIS/EIR Early Spring 2021• Board Approval/EIS Certification Spring 2021

Thank You!