A21 - W912PM23Q0027 Amendment 0003 - Final - Falls Spalled Concrete - 06-28-2023.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

The Purpose of this amendment is to:

1. Add the RTA Specif ications to the Solicitation named "A21 - W912PM23Q0027-RTA-SPECSFY23-Falls-Repair-Spalled-Concrete".

2. Update the Statement of Work

3. Add the clause 52.204-27

4. Update the response due date for questions to 5 July 2023, 4:00 P.M., EDT

5. Extend the response due date for quotes to 12 July 2023, 2:00 P.M., EDT

6. Post Questions and Answ ers

All other terms and conditions remain the same.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 16

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY 28-Jun-2023

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street, County, State and Zip Code) X W912PM23Q0027

X 9B. DATED (SEE ITEM 11)

12-May-2023

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer X is extended, is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning 1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

27-Jun-2023

CODE

USACE CONTRACTING, WILMINGTON DISTRICT

69 DARLINGTON AVE

WILMINGTON NC 28403-1343

W912PM 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912PM23Q0027

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION 00 10 00 - SOLICITATION

The following have been modified:

STATEMENT OF WORK

STATEMENT OF WORK (SOW)

May 31, 2023

CONCRETE REPAIR,

FALLS DAM, WAKE COUNTY, NORTH CAROLINA

1.0 GENERAL:

The U.S. Army Corps of Engineers, Wilmington District requires a Contactor to perform concrete repairs for the Falls Project. The work will consist of three tasks: 1) repairing spalled concrete in the Intake Tower; 2) repairing spalled concrete on the parapet wall; and 3) replacing joint material in the parapet wall.

1.1 DESCRIPTION OF PROJECT:

Falls Lake Dam is a high hazard potential dam located in Wake County, North Carolina at 35°56'30" N, 78°34'58" W. The Dam is in the upper part of the Neuse River Basin one mile upstream from the village of Falls; approximately 10 miles north of Raleigh and 17 miles east-southeast of Durham. The main body of the reservoir is in Wake and Durham counties with some embankments extending into Granville County. Construction of the project was authorized by Public Law 88-298 enacted by Congress on 27 October 1965. The dam was constructed for the purpose of flood risk management, water supply, fish and wildlife enhancement, recreation, and augmentation of low flows to further pollution abatement and water quality control. The project consists of an earth embankment dam, an uncontrolled chute spillway, and a concrete outlet works. A construction contract was awarded in 1978, completed in 1981, and permanent impoundment began in 1983. Operations and Project’s personnel have recently raised concerns about degradation of the input towers concrete structure as well as the parapet wall that sits along the dam’s crest.

1.2 PERIOD OF PERFORMANCE:

The Period of Performance is 5 September 2023 through 23 May 2024. Work must be scheduled between 8:00AM and 4:30PM Monday through Friday excluding Federal Holidays. Any work performed outside this timeframe must be approved by the Government.

1.3 SAFETY:

The contractor is responsible for safeguarding the work site at all times. The contractor shall provide adequate signing and barricades and take necessary safety measures to protect the public during all construction operations. At the close of each workday, the contractor shall ensure all materials and equipment are locked and secure, and the worksite does not pose any potential hazards to the general public.

Applicable provisions of the U.S. Army Corps of Engineers Safety and Health Requirements Manual, EM 385-1-1, will govern all work performed under this task order. The safety manual may be found at:

https://www.publications.usace.army.mil/portals/76/publications/engineermanuals/em _385-1-1.pdf

Safety while at the project site will be in compliance with the Corps of Engineers Safety Manual EM 385-1-1. Use of appropriate safety equipment is mandatory and not limited to hard hats and safety-toe boots.

1.4 SECURITY:

1.4.1 ATOPSEC #1: General security requirements and guidance: The security requirements described below apply to all contract personnel (including employees of the prime Contractor (“Contractor”) and all subcontractor employees) supporting the performance requirements of this contract. The Contractor is responsible for compliance with these security requirements. Questions regarding security matters shall be addressed to the designated Government representative (e.g., Contracting Officer Representative (COR), Requiring Activity (RA) representative, or Contracting Officer (if a COR or other RA representative is not appointed)). Contract personnel are critical to the overall security and safety of US Army Corps of Engineers (USACE) installations, facilities and activities, and security awareness training contributes to those efforts.

The Department of Defense (DoD) and Army security training requirements specified below, if applicable, are performance requirements;

all applicable contract personnel shall complete initial training within 30 days of contract award or the date new contract personnel begin performance on the contract. Within five business days from the completion of training, the Contractor shall provide written documentation (e.g., email or memorandum) to the Government representative. The documentation shall include the names of contract personnel trained and which training they completed; the Contractor shall maintain training records as part of their contract files and be prepared to provide copies of training certificates to the Government representative. Contractor personnel and vehicles are subject to search when entering federal installations.

https://www.publications.usace.army.mil/portals/76/publications/engineermanuals/em_385-1-1.pdf https://www.publications.usace.army.mil/portals/76/publications/engineermanuals/em_385-1-1.pdf

Additionally, all contract personnel shall comply with Force Protection Condition (FPCON) measures, Random Antiterrorism Measures (commonly referred to as “RAMs”), and Health Protection Condition (HPCON) measures. The Contractor is responsible for meeting performance requirements during elevated FPCON and/or HPCON levels in accordance with applicable RA plans and procedures --this includes identifying mission essential and non-mission essential personnel. In addition to the changes otherwise authorized by the changes clause of this contract, should the FPCON or HPCON levels at any individual facility or installation change, the Government may implement security changes that affect contract personnel. The Contractor shall ensure all contract personnel are aware of their security responsibilities, including any site-specific requirements identified in local policies or procedures.

1.4.2 ATOPSEC #2: Antiterrorism (AT) Level I Training: All contract personnel requiring routine access to Army installations, facilities, and controlled access areas, or requiring network access shall complete initial and annual refresher AT Level I awareness training. Online AT Level I awareness training is available at https://jko.jten.mil/ (website subject to change).

1.4.3 ATOPSEC #6: Suspicious Activity Reporting training (e.g. iWATCH, CorpsWatch, or See Something, Say Something): All contract personnel shall receive initial and annual refresher training from the RA representative on the local suspicious activity reporting program. This locally developed training provides contract personnel with general information on suspicious behavior, and guidance on reporting suspicious activity to the project manager, security representative or law enforcement entity.

1.4.4 ATOPSEC #9: Training requirements for the protection of sensitive information: All contract personnel with access to critical information (as identified in the RA's OPSEC Program) shall complete initial and annual refresher OPSEC Level I Awareness training, which is available at the following websites: https://www.iad.gov/ioss/, or http://www.cdse.edu/catalog/operations-security.html (websites subject to change). All contract personnel with access to Controlled Unclassified Information (CUI) shall complete initial and annual refresher CUI training in accordance with applicable Army policy.

1.4.5 ATOPSEC #13: Escorting in classified and/or sensitive areas: In accordance with applicable regulations, all contract personnel who do not possess the appropriate security clearance or access privileges will be escorted in areas where they may be exposed to classified information or operations, sensitive information or activities, or restricted areas.

1.4.6 ATOPSEC #14: Pre-screen candidates using E-Verify Program:

Contractors shall comply with the requirements set forth in FAR clause 52.222-54 Employment Eligibility Verification and FAR Subpart 22.18 in using the E-Verify Program at (https://www.e-verify.gov/) (website subject to change) to meet the contract employment eligibility requirements.

Contractors are encouraged to cooperate with Federal and State agencies responsible for enforcing labor requirements to include eligibility for employment under United States immigration laws in accordance with FAR 22.102-1(i). An initial list of verified/ eligible candidates shall be provided to the COR no later than three business days after the initial contract award. When contracts are with individuals, the individuals will be required to complete a Form I-9, Employment Eligibility Verification, and submit it to the Contracting Officer to become part of the official contract file.

1.5 PRE-BID SITE VISIT

An organized site visit has been scheduled for 1100 EST 22 May 2023 Participants will meet at: Falls Dam Visitor Assistance Center Address: 11405 Falls of Neuse Rd, Wake Forest, NC 27614 POC: Mark Wilmes Telephone Number: 919-846-9332 x2226 Email Address: Mark.D.Wilmes@usace.army.mil

1.6 COORDINATION

The principal Wilmington District technical point of contact for this contract is the Contracting Officer’s Representative that will be specified at contract award.

Submittals shall be made to the Contracting Officer’s Representative. The Contractor shall designate a project manager who shall be the principal point of contact for the Wilmington District in administering this contract. The Contractor's project manager shall be responsible for all coordination to ensure the work is accomplished in a professional manner. Any directions given that are viewed by the Contractor as a change to the scope of work affecting contract fixed price and performance period shall be brought to the immediate attention of the Contracting Officer. Any errors, omissions, or conflictions with the scope of work and the work to be completed shall immediately be reported to the contracting officer.

1.7 AVAILABILITY AND USE OF UTILITY SERVICES

1.7.1 Temporary Utilities

Contractor shall provide temporary utilities required for construction.

Materials may be new or used, must be adequate for the required usage, not create unsafe conditions, and not violate applicable codes and standards.

1.7.2 Payment for Utility Services

(a) The responsibility shall be upon the Contractor to provide and maintain at his own expense an adequate supply of water for his use for construction and domestic consumption, and to install and maintain necessary supply connections and piping for same, but only at such locations and in such manner as may be approved by the Contracting Officer. Before final acceptance, temporary connections and piping installed by the Contractor shall be removed in a manner satisfactory to the Contracting Officer. The Contractor shall carefully conserve any utilities furnished without charge

(b) All electric current required by the Contractor shall be furnished at his own expense. All temporary lines will be furnished, installed, connected, and maintained by the Contractor in a workmanlike manner satisfactory to the Contracting Officer and shall be removed by the Contractor in like manner at his expense prior to final acceptance of the construction.

1.7.3 Meters and Temporary Connections

The Contractor, at its expense and in a manner satisfactory to the Contracting Officer, shall provide and maintain necessary temporary connections, distribution lines, and meter bases.

1.8 PROTECTION OF EXISTING FACILITIES

The Contractor shall be responsible for protecting Government property and undisturbed land not intended for modification, from damage. The Contractor shall protect all existing structures, including but not limited to, roads, parking areas, bridges, roadway embankments, utilities and improvements from damage and, in the event of damage as a result of his operations, the Contractor shall be responsible for their repair, restoration, or for all cost of damage resulting therefrom. In addition, the Contractor shall be responsible for any damage to bridge or culvert structures caused by the unauthorized excavation or excavation beyond the project dimensions. The Contractor shall not inflict damage upon land outside the contract area by unwarranted entry upon, passage through, or disposal of material on such land. The Contractor shall repair all damage or disturbance caused by the Contractor’s operations to the satisfaction of the Contracting Officer and at the Contractor’s expense.

1.9 CONTRACTOR FACILITIES AND WORK AREAS

The Contractor shall propose and get approval for all lay down, staging, and access areas to be used outside the direct work areas. The Contractor's lay down, staging areas, stockpile storage, and temporary access areas shall be placed in approved areas as directed by the Contracting Officer. Temporary movement or relocation of Contractor facilities shall be made only when approved by the Contracting Officer.

1.10 PHYSICAL DATA

a. Weather conditions are reported by the U.S. Department of Commerce, National

Oceanic and Atmospheric Administration (NOAA) Environmental Data Service, Asheville, North Carolina, and information about weather condition(s) is available through the following Internet site:

http://www.nws.noaa.gov

It shall be the Contractor’s responsibility to obtain information concerning rainfall and wind conditions that could influence operations.

b. Transportation facilities: The project is accessible by public roads.

2.0 GENERAL REQUIREMENTS:

2.1 General.

The work consists of removing damaged concrete, cleaning exposed rebar, installing additional rebar when needed, replacing concrete to the structures original designed condition. The work also consists of replacing joint material in the parapet wall, where noted. All work shall be in accordance with the current ACI and ASTM standards. The Contractor shall furnish all services, labor, equipment, supplies, tools and incidentals necessary to complete all repairs of the Falls concrete intake tower and parapet wall structures per this scope of work. The concrete structure shall have the adequate repairs necessary to bring the structure back to its original design condition.

2.2 Responsibilities

The Contractor shall furnish qualified personnel to ensure the accomplishment of work specified in this SOW. Additionally, the Contractor shall furnish all services, equipment, personnel and travel required in connection with this SOW.

2.3 Concrete Repairs

A concrete spall exists on the under-side of the roof deck on the Intake Tower. The spall is located on the opening for the right-side access hatch and WQ4 hatch. The spall is roughly 2’x1½’x6” in size, due to the height of the spall an exact size of the spall was not determined and shall be field verified by the Contractor. The spall should be repaired and sealed. The area around the spall shall be checked for soundness, any unsound concrete shall be removed. Following the removal of unsound concrete, the perimeter of the repair area should be saw cut to create a http://www.nws.noaa.gov/ simple symmetrical configuration, preferably square or rectangular with square corners. Saw cut to a depth of 0.50 to 0.75 in. at the repair perimeter to provide a vertical edge that is roughened to ¼ amplitude minimum roughness per ACI 318 for consolidating the repair material. Saw cutting to a lesser depth may be necessary at locations where the reinforcing steel has reduced concrete cover.

The exposed reinforcement shall be cleaned and coated to produce a proper bond with the new concrete. J-rods shall be drilled into the existing concrete when applicable to ensure the new concrete will not spall from the existing concrete. New concrete shall be placed to bring the outlook tower back to its original design condition.

The parapet wall has three concrete repairs to be made. All three areas are located at construction joints with the water stop exposed. The damaged concrete shall be removed down to sound concrete. Following the removal of unsound concrete, the perimeter of the repair area should be saw cut to create a simple symmetrical configuration, preferably square or rectangular with square corners. Saw cut to a depth of 0.50 to 0.75 in. at the repair perimeter to provide a vertical edge that is roughened to ¼ amplitude minimum roughness per ACI 318 for consolidating the repair material. Saw cutting to a lesser depth may be necessary at locations where the reinforcing steel has reduced concrete cover. The Contractor shall be sure to not damage the existing water stop or rebar during the concrete repairs. The Contractor shall be responsible for repairing any damages caused during construction, at no cost to the government. The exposed reinforcement shall be cleaned and coated to produce a proper bond with the new concrete. New concrete shall be placed to bring the parapet wall back to its original design condition. Areas of damage are indicated on the attached map.

The sealant of the construction joints on the parapet wall are over all in fair condition. Four joints have significant cracking and shall be replaced. One of the joint sections of the parapet wall on the left side of the dam has settled and pulled away causing the sealant to split, Photo 6. Areas of joint sealant needing replaced are indicated on the attached map.

2.4 Laboratory Testing Procedures

For each portion of the structure, select concrete mixture proportions so that the strength requirement is met. Submit concrete mixture proportions as determined by the Contractor and submitted for review. The submission shall be accompanied by test reports from a laboratory complying with ASTM C1077 showing that proportions thus selected will produce concrete of the qualities indicated. No substitution shall be made in the source or type of materials used in the work without additional tests to show that the quality of the new materials and concrete are satisfactory. The concrete mixture quantities of all ingredients per cubic yard and nominal maximum coarse aggregate size that will be used in the manufacture of each quality of concrete shall be stated. Proportions shall indicate the mass of cement, pozzolan and ground granulated blast-furnace (GGBF) slag when used, and water; the mass of aggregates in a saturated surface-dry condition; and the quantities of admixtures. In meeting the strength requirements, the selected mixture proportion shall produce a required average 28-day compressive strength f'cr exceeding 4500 psi.

Laboratory testing shall be the responsibility of the Contractor. Laboratory tests shall be conducted by an ACI certified lab and shall following all ACI standards and regulations.

The following test procedures shall be performed:

• ASTM C143 – Standard Test Method for Slump of Hydraulic-Cement Concrete

• ASTM C231 – Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method

• ASTM C39 – Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens. Compressive strength shall be completed for the following schedule:

o 2 cylinders at 5 days o 2 cylinders at 7 days o 2 cylinders at 28 days o 1 cylinder for hold

2.5 Material Estimates

The concrete repair quantities shall be treated as field estimates, and the contractor should verify all dimensions. The estimate for Damaged Concrete to be repaired in the Intake Tower, listed below, is only estimated for the concrete inside of the intake tower, and not the parapet wall. Concrete damage in the parapet wall is included in the Concrete Joints to be Repaired. Rebar replacement and rebar additions were not estimated.

Damaged Concrete to be repaired in the Intake Tower: 1.5 Square Feet Concrete Joints to be Repaired: 3 Each Joint Sealant to be Replaced: 4 Each

2.6 Disposal of Material

The contractor will remove all demolition debris and left-over construction debris to an approved offsite location licensed to receive/recycle construction debris and in accordance with all federal, state and local regulations. The contractor is responsible for any waste disposal and any permits and fees associated with disposal.

The contractor is responsible for paying any associated fees necessary to haul materials; repair and repave access trail and bulkhead area. All work shall be coordinated through the Government.

2.7 Warranty

The contractor shall furnish the Government with a minimum of 1-year warranty or standard warranty whichever is greatest on any labor/materials for any defect.

2.8 Direction

The Contractor shall accept direction only from the Wilmington District Contracting Officer (KO). Requests or desires of the Users, Using Agency, or any other party made directly to the Contractor shall be immediately brought to the attention of the KO for this Contract. Any changes to this SOW must be authorized in writing by the

KO.

3.0 Existing Conditions:

During an inspection in 2017, a concrete spall was noted on the underside of the roof deck on the Intake Tower. The roof area has exposed rebar which will continue to deteriorate and cause additional spalling, Photo 2. Dam personnel work beneath this roof so the spall needs repaired, to prevent any future spalling.

When an inspection was completed in 2019, deterioration of the parapet wall was noted. One area of concrete appears to have been damaged by impact from a vehicle, Photo 5. Other damaged areas appear to have spalled from deterioration or vandalism. The exposed concrete will continue to deteriorate and cause additional spalling. The exposed water stops will continue to breakdown from exposure to UV light. To prevent future damage, the spalled concrete needs to be repaired. Portions of the concrete have broken away exposing rebar and water stops.

Photos 3-5 show the deteriorated concrete.

4.0 Site Photos:

Photo 1: Falls Dam Intake Tower

Photo 2: Spall found on the Roof of the Intake Towers, location 1

Photo 3: Photo of Damage to the Parapet Wall at location 2

Photo 4: Photo of Damage to the Parapet Wall at location 4

Photo 5: Photo of Damage to the Parapet Wall at location 3

Photo 6: Photo Split Sealant that needs Replaced, at location 5

5.0 Project Location:

Photo 7: Area Photo of the Dam Crest

Photo 8: Site Map with Lay Down Area

(End of Summary of Changes)