NH Deepening Project Slides Industry Day_17 November 2021.pdf

NORFOLK HARBOR

DEEPENING:

CHANNEL TO NEWPORT NEWS

AND INNER HARBOR

INDUSTRY DAY

Norfolk District 17 November 2021

AGENDA

• Project Overview

• Norfolk Harbor Channel to Newport News Deepening Scope, Dredged Material Characteristics

• Norfolk Harbor Inner Harbor Deepening Scope, Dredged Material Characteristics

• Craney Island Dredged Material Management Area – use and constraints

• City of Norfolk water main

• Requirement for Subcontracting Plan

• Environmental Considerations

• Period of Performance

• Proposed bid schedule and optional items

• Contracting method - Invitation for Bids with Definitive Responsibility Criteria

PROJECT HISTORY

• The cost sharing non-Federal sponsor is the Virginia

Port Authority (VPA)

• Project was authorized in 1986 to a depth of -55 ft

• Maintained to a controlling depth of -50 ft since 2007

• A General Reevaluation Report (GRR) re-validated project economics in June 2018 and allowed project to move into design for the nominal 55 ft channel

• Notable Milestones

• Chief’s Report Signed (June 2018)

• TSC-W Designs Complete in June 2019

• Award TSC-W October 2019

• Dredging Commenced December 2019

PROJECT OVERVIEW

Task Target Date Status Award Sediment Sampling Task Order 9/15/21 Completed 95% Draft Plans and Specifications (P&S) 10/25/21 Completed District Quality Review Complete 11/12/22 Completed

Agency Technical Review Complete 1/7/22

Industry Coordination Day 11/17/22 Sources Sought 10/04/22 Completed Sediment Sampling Data Interim Deliverable, District 404(b)1 CWA Determination for CIDMMA Placement Complete

1/12/22 Required before advertisement

RTA (BCOES Complete and AQ Plan Approved)* 2/11/22 Advertisement* 3/01/22 30 day advertisement Bid Opening* 3/31/22

Award* 5/3/22 Congressional Notification required prior to award

Notice to Proceed* 5/13/22 Construction Physical Completion on Channel to NN* 9 months Anticipated completion by Jan/Feb 2023

CRITICAL TASKS TO NEWPORT NEWS & INNER

HARBOR DREDGING

*Requires a New Start Decision, Executed PPA and sufficient Federal funding for the estimated Federal share of the contract.

CHANNEL TO NEWPORT NEWS/CIDMMA

• Channel to Newport News deepening being moved ahead of Inner Harbor work to provide needed material to raise CIDMMA dikes.

• Target project award date: May 2022

CHANNEL TO NEWPORT NEWS & NORFOLK HARBOR

INNER CHANNELS DEEPENING

SCOPE OF WORK

• May include full scope of deepening from a nominal depth of 50-feet MLLW to 55-feet MLLW for the two Norfolk Harbor channel elements:

• Channel to Newport News/ Preparation of the Upland Site

• Inner Harbor

• Pay depth includes 1-foot of advanced maintenance and 1-foot of allowable overdepth. A not-to-exceed depth is established allowing for an additional 1-foot of non-payable over-depth.

• Approximately 2.4 MCY of payable material is expected from the Channel to Newport News to be dredged over 270-day period of performance.

• Approximately 6.8 MCY of payable material is expected from the Inner Harbor to be dredged over a 540-day period of performance.

CHANNEL TO NEWPORT NEWS AND NORFOLK

HARBOR INNER CHANNEL DEEPENING

Schedule 1 Contract Work (Channel to Newport News Dredging)

• CLIN 1001 Mobilization/Demobilization

• CLIN 1002 Dredging to -55 feet MLLW - 1,645,600 CY

• CLIN 1003 Prepare Containment Area*

• CLIN 1004 Optional Dredging to -56 feet MLLW – 751,300 CY

Schedule 2 Contract Work (Norfolk Harbor Inner Channels)

• CLIN 2001 Mobilization/Demobilization

• CLIN 2002 Dredging to -54 feet MLLW – 3,747,700 CY

• CLIN 2003 Optional Dredging to -55 feet MLLW – 1,427,800 CY

• CLIN 2004 Optional Dredging to -56 feet MLLW – 1,633,100 CY

* may be completed through separate contract.

CHANNEL TO NEWPORT NEWS AND NORFOLK

HARBOR INNER CHANNEL DEEPENING

GEOTECHNICAL CONSIDERATIONS

SUMMARY OF AVAILABLE SUBSURFACE DATA

CHANNEL TO NEWPORT NEWS

In general, sandy material is between stations 86+00 and 324+00. Higher sand concentrations are located between stations 150+00 and 250+00.

SUMMARY OF AVAILABLE SUBSURFACE DATA

NORFOLK HARBOR INNER CHANNELS

Norfolk Harbor and Channels Navigation Improvement Project General Reevaluation Report (2018)

• Summarized and evaluated geotechnical information for the entire Norfolk Harbor Improvements project.

• Subsurface data obtained between 1981 and 2009

• Exploration methods: Vibracores, Gravity cores, Grab samples, Boreholes, and

Cone Penetration Test (CPT) probes.

• Material encountered in Norfolk Harbor Inner Channels: fat clays (CH) and elastic silts (MH) with isolated pockets of sands and silty sands.

PROJECT CONSTRAINTS

UTILITIES

36-inch Water Main Mitigation Measures

• A technical report titled “Norfolk Harbor and

Channels Deepening PED City of Norfolk Water Line Verification” by Moffat & Nichol

• No spud, No anchor zone

• Max allowable dredging depth is -57 feet

MLLW

• Communication and monitoring plan for dredging over the designated “No spud, No anchor” area. This plan shall be developed in close coordination with USACE, VPA and the City of Norfolk.

• Emergency Response Plan Submittal

36-inch Water Main (continued)

Virginia Natural Gas Pipeline Crossing

• Within the vicinity of Channel to Newport

News, top of pipeline elevation for the 24-inch pipeline is a minimum -83 feet MLLW.

• Several stitch points exist throughout the pipeline with a minimum of 10 feet of cover.

• Contractor to verify with Virginia Natural Gas exact locations.

Craney Island

• Intent is to capture sandy material in a confined location for immediate use through separate earthwork contract.

• General location for placement of dredged material from CNN.

• Fine grain material may be directed for placement outside of this confined area (likely North cell).

• Maximum daily production rate in a 24-hour period per cell is 22,500 cubic yards.

Craney Island

• Confined placement cell shall be constructed prior to CNN dredging operations commencing.

• Confined placement cell may be constructed by Dredging Contractor or through separate contract (TBD).

• Earthwork Contractor will be working in previously filled sub-cells concurrent with ongoing dredging operations.

• For CNN, dredged material placement will occur from east to west. Once a sub-cell is filled, a training dike will be created to prevent backwash of outfall pipe dredged material slurry.

Miscellaneous Constraints

• Mechanical Dredging

• Only allowed for CLEAN UP activities

• Material Placement in Craney Island Rehandling Basin (CIRB)

• Input limited to 150,000 CY for entire project

• Contractor is responsible for tolls at $5.43 per CY

• Cell Rotation Requirements at CIDMMA

• Not to exceed 22,500 CY of placed material in a 24-hour period per cell

• Government’s intent to limit the use of facility to one cell at a time

• NAVY Silencing Range (Norfolk Harbor Entrance Reach)

• Sta. 419+00 to 423+00

• Not included in the contract, no dredging

ENVIRONMENTAL CONSIDERATIONS

WATER QUALITY MONITORING

• Comply with requirements for Section 404 of the

Clean Water Act for discharges associated with confined disposal facilities.

• Manage spillboxes to ensure adequate ponding depth for effective sedimentation & to maximize use of the available effective weir length ensuring that only the clarified supernatant flows over the weir crest.

• The Contractor must maintain a daily average TSS concentration of less than 500 mg/l. The "less than" 500 mg/l TSS concentration is a threshold limit and is not a TSS target or goal.

WATER QUALITY MONITORING

• Environmental Testing and Upland Effluent

• TSS samples

• collected every 12 hours at the weird crest of each operating spillbox

• Hach 850/DR Colorimeter model #48450-00, program 94

"Suspended Solids", or approved equal

• 1000 ml wide mouth polyethylene bottle (Nalgene 2104-

0032 or equal)

• Logged digitally in Water Quality Database

• Visual inspection for clarified water required every 4 hours at each operating spillbox

• Spillboxes shall be maintained and weir boards adjusted so that only clarified water is released

PROTECTED SPECIES

• Native habitat for eagles, hawks, egrets, herons, pelicans, terns, plovers, dolphins, manatees, whales, sturgeon, & other wildlife protected by federal law or species of special concern for Virginia agencies

• Nesting birds may cause delays if found in placement/work area

• May 15 – August 30: Least Tern and Black Necked Stilt nesting season

• January – May: 1st Bald Eagle Nest in 2020

• The Contractor shall monitor the pond area in the active containment cell to ensure pond backwaters do not flood nesting areas

ENDANGERED SPECIES MONITORING

• Endangered Species Training provided by USACE

• Designate a look out to monitor visible action area from dredge plant:

• Look for parts/pieces of Atlantic sturgeon entrained in the cutterhead, floating around the dredge or collected in the inflow inside the upland placement area

• Document observations & notify COR ASAP

• Follow “Sturgeon Incidental Take Procedures”

• Fin clips

• Measurements, photos, specimen preservation

ENVIRONMENTAL PROTECTION PLAN (E.P.P.)

• Contractor must submit E.P.P. that includes:

• Spill Control Plan

• Hazardous Waste Controls

• Non-Hazardous Solid Waste

Disposal Plan

• Recycling & Solid Waste Disposal

Plan

• Contaminant Prevention Plan

• Historical, Archaeological, Cultural, Biological, & Wetland Resources Plan

CONTRACTING REQUIREMENTS

ACQUISITION STRATEGY

• Dredging contract will most likely be full and open Sealed Bid.

• Sources Sought issued in October 2021.

• Magnitude $25 - $100 M anticipated.

• C type contract will be awarded.

• Contract will be advertised as early as Spring 2021 following:

• Federal funding decision

• Execution of a Project Partnership Agreement between the

Department of the Army and Virginia Port Authority to start the Federal Construction Phase of the Project.

• Web-page: Beta System for Award Management (SAM) www.beta.sam.gov

NORFOLK DISTRICT SMALL BUSINESS

Mrs. Cherie Kunze Deputy for Small Business Programs Norfolk District, U.S. Army Corps of Engineers 803 Front Street Norfolk, VA 23510-1096

Phone: (757) 675-4428 cherie.a.kunze@usace.army.mil

OPEN DISCUSSION

OTHER SLIDES

PROJECT ELEMENTS