ANC029 Preproposal Conf Nov 10 2020.pptx

Preproposal Conference 2021-2023 Maintenance Dredging Anchorage, Alaska

W911KB21R0002

November 10, 2020

Building and Preserving Alaska’s Future

US Army Corps of Engineers

BUILDING STRONG®

2021-2023 Maintenance Dredging Anchorage, Alaska Meeting Agenda

Introduction – Christine Dale, Contracting Officer Jeannette Morphew, Contract Specialist

Solicitation Schedule – Christine Dale

Evaluation Factors and Basis of Award – Christine Dale

Project Overview – Donna West, Operations Project Manager

Questions

INTRODUCTION

Roll Call of Participants U.S. Army Corps of Engineers Offerors, Others

Purpose of Meeting This meeting is to brief offerors on the nature of the work and clarify proposal requirements.

The preproposal conference is for informational purposes only. Statements or representations made during the conference are not legally binding. Changes resulting from this conference are official only if issued through an amendment to the solicitation.

INTRODUCTION

Type of Solicitation – Request for Proposals Best Value – Trade Off

Contract Period – Base year + 2 option years

Process for Responding to Questions (Bidder Inquiry) See Section 00 21 00, paragraph 1.5.1

SOLICITATION SCHEDULE

Solicitation Issued: October 27, 2020

Proposals Due: December 8, 2020, 2:00 p.m. (Alaska time) Process for submission of proposals – electronic only

Evaluate Proposals: December 9-31, 2020

Award: on or about January 14, 2021

EVALUATON FACTORS AND BASIS OF AWARD

Section 00 22 11

Factor 1 Performance Capability – Equipment and Survey Plan Factor 2 Experience – Relevant Experience within past 6 years Factor 3 Past Performance – Performance on projects submitted for Experience Factor 4 Extent of Participation of Small Businesses – All offerors. Participation based on total contract dollars (base + all options) Factor 5 Price

Technical Factors, combined, are significantly more important than Price

Total evaluated price for determination of best value is the total of base items and all options items

Small Business Subcontracting Plan required for Large Business Offerors

Anchorage Fairbanks

Juneau

Nome

PROJECT LOCATION

ANCHORAGE HARBOR OVERVIEW

Location: North end of Cook Inlet in south-central Alaska.

Up to 30’ tidal change.

Authorized Project Depth : -35 feet MLLW

Dredge 5’ from dock to 1000’ offshore

Est. Quantity: 1,100,000 cy/year

Dredge Period: May 1 to October 31

Disposal: In-Water 3000’ offshore

Dredge Type: Hopper or Mechanical dredges only

Anchorage Harbor Maintenance Dredging Quantities*

2020 = 935,000 CY

2019 = 1,166,000 CY

2018 = 747,379 CY

2017 = 1,011,548 CY

2016 = 739,012 CY

2015 = 1,206,151 CY

2014 = 1,117,886 CY

2013 = 1,021,088 CY

2012 = 1,067,684 CY

2011 = 944,462 CY

*Quantities do not include early season dredging which is typically 50,000-60,000 CY

Cubic Yards 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 944462 1067684 1021088 1117886 1206151 739012 1011548 747379 1166000 935000

CONTRACT SPECIFICATIONS OF NOTE

01 22 00.00 10 Price and Payment Procedures – Measures of Payment for dredging, surveys and standby

01 57 20.01 29 Environmental Protection – Marine Mammal Mitigation Measures

31 09 13.00 29 Surveys (Civil Works) – Hydrographic Survey Requirements

35 20 23.13 and 35 20 23.23 National Dredge Quality Management Program – Dredge Instrumentation

35 20 24 Maintenance Dredging Cook Inlet Navigation Channel Geotechnical Report included

MEASUREMENT AND PAYMENT

JOB: Full compensation

CY: Estimated quantity. AA items subject to Variations in Estimated Quantities Clauses. Actual quantity may vary.

NTE: Not to exceed unless authorized by Contracting Officer. Quantity may vary. No pricing adjustment under Variations in Estimated Quantities Clauses.

Dredge Limits Project Depth: -35 feet MLLW

Max Pay Line: -39 feet MLLW except -38 feet MLLW for Areas E and F at the dock.

Deeper Dredging (B Areas):

May 1-31 and Sep 15 – Oct 31

Dredge Period: May 1 to Oct 31

Dredging Constraints:

Stop dredging 5 feet from the dock face.

Shoal material is continuously deposited within the project limits throughout the entire dredge season. Historically, shoaling rates of 3,000 to 12,000 cubic yards per day occur within the project area.

Previous dredging indicates the materials above the maximum pay line are recent marine sediment deposits consisting of Sandy Silt, Silt (ML), Silty Clay (CL-ML), Lean Clay (CL), and Silty Sand (SM).

Further information is in Maintenance Dredging Specification 35 20 24.00 29, Section 1.2 Character of Materials, subsection 1.2.1. Anchorage Harbor Maintenance Dredging Character of Materials

Shoal material is continuously deposited within the project limits throughout the entire dredge season. Historically, shoaling rates of 3,000 to 12,000 cubic yards per day occur within the project area.

Previous dredging indicates the materials above the maximum pay line are recent marine sediment deposits consisting of Sandy Silt, Silt (ML), Silty Clay (CL-ML), Lean Clay (CL), and Silty Sand (SM).

Previous dredging efforts indicate the in place relative density of the cohesionless soils range from loose to medium dense and the in place consistency of cohesive soils range from soft to firm. The dredge materials plasticity ranges from nonplastic to medium plasticity. Dredge materials have historically exhibited cohesive behavior which contributes to a reduction in productivity during dredge material disposal. Mechanical means of dislodging the dredged material from dump scows is anticipated and may be required for disposal of dredged material. Dredged materials have exhibited abnormally high shear strengths which also contributed to a reduction in dredging productivity.

Dry densities of dredged material were determined to be between 85 and 105 pounds per cubic foot and the moisture content to be 20 to 25 percent. Local, minor variations and some debris are to be expected, and if encountered shall not be considered materially different within the scope of the DIFFERING SITE CONDITIONS Clause.

Anchorage Harbor Dredge Limits – 2021 Constraints Port of Alaska completing construction of Petroleum and Cement Terminal (PCT) in 2021

Work entails construction of PCT mooring and breasting dolphins

Yellow section of dock and offshore areas will be impacted by construction barges and anchors

POL 2 partially unavailable during first half of 2021 dredge season

PCT unavailable in 2021, maintenance dredging begins 2022

South Float unavailable in 2021, need to work with Port of Alaska or private entity on access

Surveys Summer Surveys – Multibeam

Survey data collection: Mondays & Thursdays

Survey results to Corps/Shippers: 2 days after data collection is complete

Winter Surveys – Singlebeam Up to 18 surveys per season from November to April

Set up winter survey schedule in September

Anchorage Fairbanks

Juneau

Nome

PROJECT LOCATION

Standby Time

Standby Time:

When there is no material above project depth or upon approval of the Contracting Officer.

Standby days should start and end on survey days (Monday or Thursday).

Surveys continue while the dredge is on standby.

Initial NTE amount may be increased by the Contracting Officer

Early Season Dredging (Option) Dredge Area: Area A and sub-areas

Dredge Period: April 1-30

Max Pay Line:

A: -39 feet MLLW B1: -45 feet MLLW B2: -43 feet MLLW B3: -41 feet MLLW E & F: -38 feet MLLW

Dredge Plant: Same as maintenance dredge plant

Method of Payment: Paid per day.

20 dredge days and 10 standby days in contract

Early Season Mobilization: Only costs in addition to annual mobilization

Dredge Day: 12-hour dredging/12 standby

Standby Day: less than 8 hours dredging in 24-hour period

COOK INLET NAVIGATION CHANNEL (OPTION)

Location Cook Inlet Nav. Channel (Option):

Located about 6 miles south of the Anchorage Harbor

(Base) Placement Site Cook Inlet Nav. Channel Placement Site for Anchorage Harbor

COOK INLET NAVIGATION CHANNEL

Dredge and Survey Areas (Option) May 2017 Condition Survey Channel Length = 11,000 feet Channel Width = 1,100 feet Project Depth = - 38 feet Max Payline = - 43 feet

Condition Surveys in May and October

Dredge Period: 15 June - 30 August if needed

Surveys: Once per week while dredging.

Additional option for dredge days if small amount of dredging needed

COOK INLET NAVIGATION CHANNEL (Option) Dredge History

Maintenance Dredge History:

2013:

ESSAYONS removed 2.7 Million CY WESTPORT removed 200,000 CY

2014:

ESSAYONS removed 1.0 Million CY WESTPORT removed 450,000 CY.

No maintenance dredging prior to 2013 or since 2014.

Geotechnical Site Information

Geotechnical Data Report, Cook Inlet Navigation Channel Dredging, September 2014

(Provided as an attachment in Specification 35 20 24.00 29 Maintenance Dredging)

All drawings, figures, and photographs presented is this presentation are from the solicitation. No new information is being presented.

The subsurface exploration for this project was conducted from 10 September to 5 October 2007. A total of 48 test borings were drilled, ranging in depth from 34 to 42 feet below mudline.

From July to September 2008, a trial dredging program was conducted in virgin areas (no previous dredging) where future dredging is planned for the Anchorage Harbor Deepening project.

Reference Maintenance Dredging Specification 35 20 24.00 29 Section 1.2 Character of Materials 1.2.2 Cook Inlet Navigation Channel

Previous maintenance dredging indicates the materials above the maximum pay line consist of poorly graded sand (SP). Gravel, cobble, and boulder sized particles were also encountered throughout the length and width of the channel below the approximate elevation of -38 feet MLLW.

The quantity of gravel, cobble, and boulder sized particles encountered during previous maintenance dredging was estimated to be five percent or less by volume.

Cook Inlet Navigation Channel Character of Materials

Shoal material is continuously deposited within the project limits throughout the entire dredge season. Historically, shoaling rates of 3,000 to 12,000 cubic yards per day occur within the project area.

Previous dredging indicates the materials above the maximum pay line are recent marine sediment deposits consisting of Sandy Silt, Silt (ML), Silty Clay (CL-ML), Lean Clay (CL), and Silty Sand (SM).

Previous dredging efforts indicate the in place relative density of the cohesionless soils range from loose to medium dense and the in place consistency of cohesive soils range from soft to firm. The dredge materials plasticity ranges from nonplastic to medium plasticity. Dredge materials have historically exhibited cohesive behavior which contributes to a reduction in productivity during dredge material disposal. Mechanical means of dislodging the dredged material from dump scows is anticipated and may be required for disposal of dredged material. Dredged materials have exhibited abnormally high shear strengths which also contributed to a reduction in dredging productivity.

Dry densities of dredged material were determined to be between 85 and 105 pounds per cubic foot and the moisture content to be 20 to 25 percent. Local, minor variations and some debris are to be expected, and if encountered shall not be considered materially different within the scope of the DIFFERING SITE CONDITIONS Clause.

Maintenance Dredging

Reference: Geotechnical Data Report Cook Inlet Navigation Channel Dredging September 2014

Previous maintenance dredging indicates the materials above the maximum pay line consist of poorly graded sand (SP). Gravel, cobble, and boulder sized particles were also encountered throughout the length and width of the channel below the approximate elevation of -38 feet MLLW. The quantity of gravel, cobble, and boulder sized particles encountered during previous maintenance dredging was estimated to be five percent or less by volume. Previous dredging efforts indicate the in place relative density of the cohesionless soils range from loose to medium dense and measured total unit weights varied from 105 to 118 pounds per cubic foot.

Maintenance Dredging

Previous maintenance dredging indicates the materials above the maximum pay line consist of poorly graded sand (SP). Gravel, cobble, and boulder sized particles were also encountered throughout the length and width of the channel below the approximate elevation of -38 feet MLLW. The quantity of gravel, cobble, and boulder sized particles encountered during previous maintenance dredging was estimated to be five percent or less by volume. Previous dredging efforts indicate the in place relative density of the cohesionless soils range from loose to medium dense and measured total unit weights varied from 105 to 118 pounds per cubic foot.

Maintenance Dredging

Previous maintenance dredging indicates the materials above the maximum pay line consist of poorly graded sand (SP). Gravel, cobble, and boulder sized particles were also encountered throughout the length and width of the channel below the approximate elevation of -38 feet MLLW. The quantity of gravel, cobble, and boulder sized particles encountered during previous maintenance dredging was estimated to be five percent or less by volume. Previous dredging efforts indicate the in place relative density of the cohesionless soils range from loose to medium dense and measured total unit weights varied from 105 to 118 pounds per cubic foot.

Questions?

Contact Info:

Jeannette Morphew, Contacting Specialist – (907) 753-5594 Jeannette.L.Morphew@usace.army.mil

Christine Dale, Contracting Officer - (907) 753-5618 Christine.A.Dale@usace.army.mil image10.jpeg image11.emf image12.JPG

Microsoft_Excel_Worksheet.xlsx Sheet1

Anchorage Maintenance Dredge Quantities

Year Cubic Yards

2007 1,766,357

2008 1,338,281

2009 702,366

2010 619,506

2011 944,462

2012 1,067,684

2013 1,021,088

2014 1,117,886

2015 1,206,151

2016 739,012

2017 1,011,548

2018 747,379

2019 1,166,000

2020 935,000

&Z&F

Cubic Yards 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 1766357 1338281 702366 619506 944462 1067684 1021088 1117886 1206151 739012 1011548 747379

Sheet2

Sheet3 image13.JPG image14.JPG image15.jpg image16.png image17.JPG image18.JPG image19.jpeg image20.jpeg image21.jpeg image22.jpeg image23.jpeg image24.jpeg image1.png image2.png image3.jpeg image4.jpeg image5.jpeg image6.jpeg image7.png image8.png image9.png