A22_AM_0004_Paradise Lake Pre-Bid Slides.pdf

U.S. ARMY CORPS OF ENGINEERS,

VICKSBURG DISTRICT

PRE-BID MEETING

Mississippi River, RM 548.3-R, FC/MR&T, Channel Improvement, Paradise Lake Closure

Solicitation No. W912EE24B0002

8 Nov 2023

Drone picture – July 2020

Aug 2020 Jun 2023

AGENDA

I. Welcome and Introductions II. Contracting Division Opening Remarks II. Project Scope Briefing

a. Location

b. River Stages

c. Access

d. Scope

e. Site Pictures

f. Quantities

g. Pre-construction Surveys

h. Order and Acceptance of Work

IV. Construction Branch Remarks

a. Estimated Quantities

b. Definitive Responsibility Requirements

c. Other Construction Considerations

V. Questions VI. Closing Remarks

WELCOME AND INTRODUCTIONS

a. USACE Reps

b. Participants

a. Please submit all technical inquiries through PROJNET

b. Amendment will be issued with presentation and attendance roster from this meeting

c. Write-up of technical concerns arising during this conference may also be included in the post-conference Amendment

d. If there are problems accessing PROJNET, contact the help desk

• (217) 367-3273 or (833) 389-1097

• staff@projnet.org

CONTRACTING DIVISION REMARKS

mailto:staff@projnet.org a.Location b.River Stages

c. Access d.Scope e.Quantities

f. Pre-construction Surveys g.Order of Work and Acceptance

PROJECT SCOPE BRIEFING

PROJECT LOCATION

Greenville, MS

Mississippi

Arkansas

Greenville Port

MISSISSIPPI RIVER STAGE AT GREENVILLE, MS

Rock Chute Elevation

Downstream Project Elevation

Rock Chute Elevation

Limiting Stage for Work

• 60-foot Construction easement is provided in the given ROE for the project.

• Ashbrook Dike 2R is not connected to the bank and will be repaired and reconnected by others when river stages are suitable.

PROJECT ACCESS

• The Paradise Lake Closure is going to be realigned, regraded, and paved with stone.

• A rock chute is to be constructed at the beginning of the closure where a major loss in section exists.

• The proposed closure has a 20 ft crown with a 1V:20H foreslope and a 1V:10H backslope.

• A 57-gravel roadway to be constructed on top of the closure to maintain access across the crown.

SCOPE

Stone Chute Typical Section

Closure Typical Section

Riverside Lakeside

Excess Material Placement

SITE PICTURES – JUNE 2023

Closure structure looking upstream Scour hole on closure structure

Portion of the chute

Mississippi River, RM 548.3-R FC/MR&T, Channel Improvement

Paradise Lake Repair

ESTIMATED QUANTITIES

ITEM AND DESCRIPTION QUANTITY UNIT

MOBILIZATION AND DEMOBILIZATION 1 JOB

CLOSURE REPAIR

Degrading/cutting sand from closure 252,000 CY

Placing backfill sand to new alignment 157,500 CY

STONE "C" PAVING FOR CLOSURE 183,150 TONS

#57 GRAVEL FOR SURFACING ON CLOSURE 2,600 TONS

GRADING AND EXCAVATION FOR ROCK CHUTE

Degrading/cutting sand from rock chute 45,000 CY

Placing backfill sand to new alignment 2,500 CY

STONE "C" PAVING FOR ROCK CHUTE 79,200 TONS

EROSION CONTROL

Silt fencing along limits 31,240 LF

TOTAL

It is expressly understood that the accuracy of these estimates is in no wise warranted and that the furnishing of this information to a bidder will not relieve him/her of his/hers responsibility to estimate the quantities involved. It is further to be expressly understood in no case will such estimate be used as a basis of a claim against the Government.

QUANTITIES

• Design and quantities are based on June 2022 survey prior to the latest overtopping.

NOVEMBER 2022 APRIL 2023

PRECONSTRUCTION SURVEYS

• Design is based on June 2022 surveys prior to the latest overtopping. Site conditions may have changed since surveys were taken. Bidders should anticipate larger scour holes.

• Pre-construction surveys shall be taken 21-days prior work commencement. Surveys, calculated volumes and quantity estimates shall be provided to the COR within 14 days prior work commencement.

• Surveys to be repeated follow site inundation.

ORDER OF WORK

1. Excavate to grade the rock chute. Any cut material is to be placed in the section of the proposed closure area,

2. Lay stone in the rock chute,

3. Grade and shape the closure in 500 foot sections,

4. Lay stone along the closure in 500 foot sections.

1. Rock chute to include excavation, grading and stone placement.

2. Sections of the enclosure including excavation from the rock chute, grading and stone placement 500 feet long.

ACCEPTANCE OF COMPLETED WORK

ORDER AND ACCEPTANCE OF WORK

a.Estimated Quantities b.Definitive Responsibility Requirements

c. Other Construction Considerations

CONSTRUCTION BRANCH REMARKS

ESTIMATED QUANTITIES

• Amendment 3 revised the bid schedule to align with the estimated quantities for unit priced items.

• Surveys completed in June 2022 were used to calculate the estimated quantities and develop the cross-sections provided in the plans.

• The closure dam routinely experiences high river conditions resulting in scour. Bidders should anticipate larger scour holes than those shown in the cross-sections. Existing sand shall be excavated to the grades shown and primarily used to fill the scour holes, with any excess placed in the designated areas. No sand shall be imported. Bidders should anticipate adjusting the distribution of excavated sand as needed to effectively fill scour holes at no adjustment in price. It is possible that all excavated sand will be required to fill scour holes with no excess.

• Bidders are encouraged to make a site visit prior to submitting their bid. Site visit POC is Jason Overstreet, Greenwood Area Office Area Engineer at 662-453-5531.

In addition to criteria in FAR 9.104-1, the apparent low bidder is required to submit the following information to be eligible for award.

1. Provide a list of marine equipment available showing sufficient resources and capability to complete the stone protection of the Paradise Lake Closure Dam. Indicate whether this equipment is owned or leased by the prime or subcontractor. If the equipment is leased, provide documentation between equipment provider and contractor showing agreement that equipment will be available at the time of removal and installation.

2. Provide a signed letter from the Contractor’s stone supplier(s) stating the supplier(s) will provide a continuous supply of stone throughout the stone placement period.

Submission of the information above does not replace the full submittal requirements for these items in accordance with the contract requirements.

DEFINITIVE RESPONSIBILITY REQUIREMENTS

a. Duration is 300 calendar days. Time extensions will be given when the site is inaccessible due to river conditions.

Contractor should provide continuous stone delivery and work diligently to complete the project by the required completion date.

b. Repairs to Ashbrook Dike 2R will be completed under a separate contract. Repairs to Dike 2R will provide a 30 ft crown to use for access if needed. The repairs are expected to be complete by the end of December pending favorable river conditions but are not guaranteed. Delays resulting from low river stages if the dike is incomplete will be considered an excusable delay (time only).

OTHER CONSTRUCTION CONSIDERATIONS

Work by others

QUESTIONS

CLOSING REMARKS