J Street Drain Project Public Works Agency Ventura County - - PowerPoint PPT Presentation

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J Street Drain Project Public Works Agency Ventura County - - PowerPoint PPT Presentation

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J Street Drain Project Public Works Agency Ventura County Watershed Protection District Surfside III Meeting October 22, 2011 RDEIR Public Meeting 9/26/2011 T opics Covered Facility and Project Planning History Public Works Agency

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Public Works Agency

October 22, 2011

Ventura County Watershed Protection District

J Street Drain Project

Surfside III Meeting

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Public Works Agency

October 22, 2011 Ventura County Watershed Protection District

RDEIR Public Meeting – 9/26/2011 T

  • pics Covered

Facility and Project Planning History 100-Year Flood Potential for J Street Drain Watershed Project Selection and Funding January 18, 2010 Flood Emergency Decision to Use Vertical Shoring at Surfside III Beach Elevation Management Plan

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Public Works Agency

October 22, 2011 Ventura County Watershed Protection District

RDEIR Public Meeting – 9/26/2011 T

  • pics Covered (cont.)

Inland Flooding Study (to Understand 1/2010 Emergency) Coastal Processes Study (Preferred Beach Elevation) Hydrogeology Study (Dewatering Effect on Halaco) Sediment Transport Study for Proposed Outlet to Lagoon Mosquito Technical Study Environmental Impact Report Status & Schedule

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Public Works Agency

October 22, 2011 Ventura County Watershed Protection District

T

  • day’s Agenda

Beach Elevation Management Plan Surfside III Side Drains Safety of SSIII Buildings Adjacent to J Street Drain During Construction Tree Replacement Fence Replacement Construction Dewatering Effect on Halaco Metals

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Public Works Agency

October 22, 2011 Ventura County Watershed Protection District

Beach Elevation Management Plan

Replaces OLD Emergency Action Plan (EAP) in 2009 DEIR Response to January 18, 2010 flood emergency Monitor beach sand berm elevation before predicted storms Target safe water surface elevation based on January 2010 event flood analysis If needed, shave top of berm to facilitate natural breach during future storm event NEW PLAN would not directly breach the lagoon

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Public Works Agency

October 22, 2011 Ventura County Watershed Protection District Slide 6

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Public Works Agency

October 22, 2011 Ventura County Watershed Protection District Slide 7

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Public Works Agency

October 22, 2011 Ventura County Watershed Protection District

Coastal Processes Investigation

Beach Nourishment Plan

  • USACE sand bypass to Hueneme

Beach

  • Bypass operation occurs every 2

years

  • 2009 sand bypass quantity was

2,884,040 cubic yards (CY)

  • Increased sand at Hueneme Pier by

3 feet

  • Increased sand berm at Ormond

Beach Lagoon by 1.5 feet

Project Year Dredged Quantities (CY) Disposal Site Channel Islands FY01 1,235,950 Hueneme Beach FY03 2,062,695 FY05 2,140,915 FY07 1,171,035 FY09 2,198,040 FY11 968,530 Port Hueneme FY01 FY03 FY05 27,200 FY07 FY09 686,000* FY11

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Public Works Agency

October 22, 2011 Ventura County Watershed Protection District

Side Drains

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Public Works Agency

October 22, 2011 Ventura County Watershed Protection District

Side Drains: Building 6 South Corner

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Public Works Agency

October 22, 2011 Ventura County Watershed Protection District

Side Drains: Building 6 SE Corner

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Public Works Agency

October 22, 2011 Ventura County Watershed Protection District

Side Drains: Building 6 Parking, S End

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Public Works Agency

October 22, 2011 Ventura County Watershed Protection District

Side Drains: Between Buildings 6 & 7

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Public Works Agency

October 22, 2011 Ventura County Watershed Protection District

Side Drains: Between Buildings 7 & 17

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Public Works Agency

October 22, 2011 Ventura County Watershed Protection District

Side Drains: Between Buildings 7 & 17

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Public Works Agency

Building Safety During Construction

October 22, 2011 Ventura County Watershed Protection District Slide 16

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Public Works Agency

New Mitigation Measures

Recirculated Draft EIR:

With owner permission, a third party will video record the interior and exterior condition of adjacent buildings before construction. If owner submits a damage claim within one year, a second video will be taken, before and after recordings will be compared to settle damage claims.

October 22, 2011 Ventura County Watershed Protection District Slide 17

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Public Works Agency

New Mitigation Measures

Final EIR Proposal:

Contractor to Prepare a Work Plan

before Construction may Begin

Consider all Available Geotechnical

Information for Vertical Shoring Areas

Plan must Specify how Contractor will

Install Vertical Shoring to Minimize Potential Vibration Damage to Buildings

October 22, 2011 Ventura County Watershed Protection District Slide 18

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Public Works Agency

New Mitigation Measures

Final EIR Proposal (cont):

Place Elevation Monuments on

Adjacent Buildings before Construction

Monitor Adjacent Structures Daily Modify Work Plan to Reduce Potential

Damage if Problems are Observed

Phone No. for Reporting Possible

Damage Observations Immediately

October 22, 2011 Ventura County Watershed Protection District Slide 19

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Public Works Agency

October 22, 2011 Ventura County Watershed Protection District

Trees

 112 Trees and Shrubs Surveyed in 2010  21 Trees: Preserve in Place  20 Trees: Trim Roots and Monitor Health  7 Palms: Protect Trunks/Fronds & Monitor  54 Trees: Remove (SSIII Property)  10 Trees: Remove (District Property)

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Public Works Agency

October 22, 2011 Ventura County Watershed Protection District

Existing Vegetation

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Public Works Agency

October 22, 2011 Ventura County Watershed Protection District

Trees to be Removed (54 SSIII, 10 District)

 Myoporum – 33 SSIII, 7 District ROW  Eucalyptus – 19 SSIII, 1 District ROW  Monterey Pine – 1 SSIII  Windmill Palm – 1 SSIII, 2 District ROW

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Public Works Agency

October 22, 2011 Ventura County Watershed Protection District

Trees to be Protected/Monitored (27)  Myoporum – 7  Eucalyptus – 13  Windmill Palms - 7

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Public Works Agency

October 22, 2011 Ventura County Watershed Protection District

Trees Preserved (21)

 Myoporum – 10  Eucalyptus – 4  Windmill Palms – 4  London Plane – 1  California Sycamore – 1  Dead Myoporum – 1

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Public Works Agency

October 22, 2011 Ventura County Watershed Protection District

OWWTP / District Property Line

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Public Works Agency

October 22, 2011 Ventura County Watershed Protection District

OWWTP / District Property Line

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Public Works Agency

October 22, 2011 Ventura County Watershed Protection District

SSIII / District Property Line

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Public Works Agency

October 22, 2011 Ventura County Watershed Protection District

Construction Dewatering

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Public Works Agency

October 22, 2011 Ventura County Watershed Protection District

Groundwater Injection Barrier

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Public Works Agency

October 22, 2011 Ventura County Watershed Protection District

Thank you for your interest

  • If you have any questions, please contact:
  • Kirk Norman, Project Engineer, 805-654-2017
  • Angela Bonfiglio Allen, Environmental Planner,

805-477-7175

  • Wayne Praskins, Halaco Project Manager

415-972-3181, www.epa.gov

  • To review the RDEIR, please go to:
  • www.JStreetDrain.com

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