Attachment 01-VLSB 24-0034 - SOW Repair Tank 1617 and Examine 2003_AFC REV 27 MAR 24.pdf

VLSB 24-0034, Maintain Int/Ext Tanks 1617 & 2003

STATEMENT OF WORK (SOW)

FOR

Repair TANK 1617/INSPECT TANK 2003

03/20/2024

PROJECT: VLSB 24-0034

STATEMENT OF WORK:

The scope of this project is to provide the maintenance for the interior and exterior of tanks 1617 and inspect tank 2003. Tank T1617 is a 250,000 gallon deluge water storage tank located on Shaw Dr. and adjacent to building B1616. Tank T1617 shall have the interior and exterior cleaned, coated and repaired in accordance with this Statement of Work (SOW). Tank T2003 is a 200,000 gallon water storage tank located on Rhodes Ave and adjacent to building B2004.

Tank T2003 shall have the interior and exterior assessed. Refer to Attachment 02 – Tank Drawings and Attachment 03 – Tank Location for reference.

BASE BID (CLIN 0001):

The contractor shall perform the following work related to these tasks:

TANK 1617:

• The contractor shall perform a lead survey and submit it to the Govt for approval.

• The Contractor shall sand blast and remove all the interior and exterior paint from the tank 1617. This includes the tank top and the piping from the tank to the ground level.

it It’s recommended that the contractor document existing conditions by videotaping the areas to be worked in and provide a copy to the Contracting Officer for documentation of the original existing conditions.

• The Contractor shall dispose of all removed paints and material at an approved off-base site in strict accordance with South Carolina department of Health and Environmental Control (SCDHEC).

• The Contractor shall perform a proper surface preparation during the coating process and avoid future coating holiday formation.

• The Contractor shall apply a complete paint coating to the entire tank. Which shall include interior, exterior, shell, piping and the structural supports.

• The Contractor shall follow Attachment 04 - Sherwin-Williams Guidance for surface preparation and coating specifications. The SSPC QP x-series certifications are not required for this project.

• The Government is responsible for draining and refilling the tank. The contractor shall coordinate with the Government accordingly and submit the tank drainage request in writing.

• The Contractor shall ensure that the cathodic protection system is completely operational after completion of all coating work.

• Demo and remove the existing cathodic protection system. This includes the existing rectifier.

• Engineer, furnish, and install a new cathodic protection system for Tank T1617. See Attachment 06 – T1617 cathodic protection report for reference to the existing conditions. See UFC 3-570-01, Cathodic Protection for minimum requirements for this tank application. The new design shall also include additional anode ground bed capacity for the vicinity between Tank 1617 and B1616. The design shall also include an anode junction box located near the rectifier. The design shall also include a installation of a new rectifier.

• Note the cathodic protection design and installation shall be supervised by a current NACE (National Association Corrosion Engineers) certified Cathodic Specialist (CP4) or Corrosion Specialist. Refer to UFC 3-570-1, Cathodic Protection, and Section 2-1 for qualification requirements.

Tank Inspection Corrective Action Items

Provide corrective action work to repair and/or replace the following items identified in the inspection report of T1617 dated August 4, 2022 attachment 05.

• Sand blast or hand tool clean the foundation as required to prep the work area.

Then repair the spalling and cracking areas. Then apply one coat of sealer to exposed areas.

• The area between the foundation and the chime is not properly sealed. Install caulk between the foundation and chime to prevent ingress of water under the tank bottom in accordance with NFP 22 2018.12.2.1.2 requirements.

• Furnish and install an active impressed cathodic protection (ICCP) system to act as a preventative corrosion measure against the underside of the tank floor.

• Remove and replace existing flange bolts with galvanized bolts.

• Remove and install new confined space, fall protection equipment required signage in accordance with OSHA and the Department of Homeland Security Codes.

• Remove and replace existing primary shell manway with a 30” shell manway complete with davit arm and galvanized bolts in accordance with AWWA D100-11 7.4.4, OSHA 1910.36 and NFPA 22 2018 14.7.2

• Furnish and install a liquid level indicator board in accordance with NFPA 22 2018, Section 14.1.8.

• Furnish and install 2” lockable frost proof drain valve in accordance with AWWA and

NFPA.

• Furnish and install a new air brake to the existing overflow in accordance with AWWA D100-11 SECTION 7.3 and NFPA 22 2018 SECTION 14.6.

• Remove the existing interior paint coating and apply new interior paint coating.

• Remove the existing exterior paint coating and apply new exterior paint coating.

• Within the pump house. Furnish and install an Ashcroft or approved equivalent thermometer and liquid level gauge that reads in feet and psi.

• Furnish and install swing gate at opening of handrail system in accordance with

OSHA 1910.23, AWWA D100-11, section 3.1.7, and NFPA 22 2018 4.14.3.

• Remove and replace the non-compliant roof vent with a Frost Proof/Pressure Proof

Vent in accordance with AWWA D100-2011, Section 7.5, 7.5.1, and 7.5.2.

• Install a flanged neck/nozzle between the roof top and the new rood vent to allow the attachment of a ventilation fan in accordance with NFPA 22-2018 13.7.2.

• Remove the primary roof hatch that is welded shut and replace with a 24’’ x 24’’ square hatch in accordance with AWWA D100-11 5.4.3.1 and NFPA 22 2018 code requirements.

• Remove and install a new interior ladder complete with cable-type safety climb device in accordance with OSHA 29 CFR 1910.27, AWWA D100-11, SECTION 5.4.3.1 and NFPA 22 2018, section 13.7.2.

• Install caulk to the interior lapped roof joints after painting.

• Pressure grout the underside of the tank floor in order to fill the voids between the tank bottom and the tanks foundation. Remove and plate over the couplings and perform vacuum box testing of the floor welds. Mark all bad welds and repair any leaks found in accordance with AWWA D100-11 12.6.2 and NFPA Code 25 2014 9.4.1 requirements.

• Reinforce the (rafter to-support) and the (rafter to shell) connections by welding.

After painting, caulk the roof to rim angle connections to prevent premature failure of the coating.

• Install gussets at the top and bottom plates of the center column in order to increase the stability and load capacity of the center column.

• Remove the welds from the bottom of the center column and install guides on 120 degree increments to provide lateral restraint but which will allow vertical movement.

• Install a wear plate under the base of the center column to repair the corroded surface.

• Furnish and install an anti-vortex plate with 6’’ standoffs in accordance with NFPA 22 2018 14.2.13 requirements.

• Repair the liquid level float.

• After the interior and exterior paint is removed the contractor shall repair the tanks pitting. In areas where there are multiple pits the contractor shall install 12’’ x 12’’ x 3/16’’ steel patch. Weld all isolated pits that are 1/8’’ or deeper. All isolated pits that are less than 1/8’’shall be repaired with a seam sealer. In areas where the welds seams need to be repaired they shall be ground down and rewelded.

• Clean out the sediment from interior of the tank.

• Label and install the ICCP test points. At a minimum the contractor shall provide 4 test points around the tank unless the manufacturer requires more.

TANK 2003:

• Contractor shall visually assess the interior and exterior coating system and the structural components of tank 2003.

• The assessment shall be provided electronically.

• The assessment shall provide at a minimum:

o General description of the tank and its location o Inspection procedures with ASTM reference o Visual assessment for Blistering (ASTM D714), Chalking (ASTM D4214), Checking (ASTM D660), Corrosion / Pitting, Cracking (ASTM D661), Surface Rust (ASTM D610), and non-destructive dry film thickness.

o High Definition (HD) digital images to include photos and/or videos o Test results o Written engineering report with a summary of results and recommendations to include a detailed narrative of the specific existing condition and the proposed of corrective actions to repair the tank infrastructure. The report shall be supported with a detailed list of corrective actions for repairs/recommendations with cost estimate for each item called out.

Period of Performance: After the NTP is issued the contractor shall have 15 Weeks (105 Calander days to complete this SOW.

GENERAL DESIGN AND CONSTRUCTION NOTES

1. Any references to State Government, Federal Government, or Industry standards or specifications made herein shall form a part of this specification to the extent referenced thereto and all materials and workmanship under this contract shall comply with or exceed these standards and references. All referenced standards shall be the latest edition.

2. All manufactured equipment and products shall be new materials in good condition and installed as per manufacturer's latest printed instructions, unless specified otherwise herein.

3. The Contractor is responsible for protection of existing facilities equipment from damage during installation and testing operations.

4. The Contractor shall show all calculations on the drawings in lieu of a separate document, except where specifically allowed by the Shaw AFB Design Engineer.

5. Contractor shall take into account the special treatment of hazardous waste, as well as the environmental implications related to building demolition management (i.e.

fluorescent lighting tubes, t-stats, etc.). Every effort shall be made to recycle eligible materials, and those not suitable, shall be disposed of off base in accordance with all (SCDHEC) South Carolina Department of Health and Environmental Control regulations.

6. The contractor shall include make, model number, and inherent operational characteristics on the drawings for all of major equipment supplied for the facility. The Contractor shall supply manufacture’s cut sheets with the submittal where the component is identified.

7. If any submittal does not, in the opinion of the Contracting Officer, meet or exceed the requirements contained within this SOW, Shaw AFB Design Standards, or any referenced design guidance or nationally recognized code then it shall be considered to be unacceptable and returned to the Contract for correction and resubmission. The Contracting Officer has the option, in lieu of disapproval, to provide acceptance of a submittal with required corrections identified if it is determined the submittal is substantially complete and correct.

8. Ensure that any demolition, utility cut and capping, and debris removal service performed at Shaw AFB, South Carolina in completed in such a manner that will restore a neat and professional appearance of base areas.

9. The facility/area shall be cleaned in its entirety, including exterior areas, before being returned the government.

WARRANTY

Contractor shall furnish a minimum one year warranty against defects in material and workmanship starting on the beneficial occupancy date.

GENERAL INFORMATION

The contractor shall provide all management, tools, supplies, equipment, labor, and applicable licenses and permits necessary to complete the requirements within. All work shall be done in strict accordance with this Statement of Work and subject to the terms and conditions of the contract and in accordance with (UFC) Unified Facilities Criteria, Unified Facilities Guide Specifications (UFGS), the International Building Code (IBC), International plumbing code (IPC), South Carolina Department of Health and Environmental Control (SCDHEC), National Electrical Code (NEC), National Electrical Safety Code (NESC), National Fire Protection Association (NFPA), EPA 402-K-01-001 (2008), South Carolina Department of Transportation (SCDOT), South Carolina Department of Health and Environmental Control (SCDHEC) Shaw Air Force Base Design and Construction Standards, Change 2, 21 Aug 2018 and all other applicable codes.

PERMITS

The contractor shall pay for and obtain any required permits. The contractor shall act in accordance with this Statement of Work, SCDHEC, Federal, and Shaw AFB guidelines.

WORKING CONDITIONS

The Contractor shall take all precautions to insure that his operations are conducted in a manner as to minimally interfere with the normal operations of the base and the safety and convenience of the base personnel. The contractor shall coordinate utility outages with the Civil Engineering Squadron (CE) service call and the user.

GENERAL PROJECT NOTES

Contractor is responsible for verifying all dimensions, quantities and square footages. All dimensions, quantities and square footages included are approximations. Construction and demolition shall be in strict accordance with the Shaw Air Force Base Design and Construction Standards. The information provided in this Statement of Work (SOW), the provided drawings, and the requirements of the Shaw Air Force Base Design and Construction Standards shall be determined to be the minimum standards required in this project.

The contractor shall video all areas in which work shall occur prior to starting work to include interior and exterior the job site and surrounding area. UFC’s take precedence over all standards, codes and Shaw AFB Design Standards and requirements that pertain to the work within this SOW.

During construction, the contractor shall take care not to damage existing structures, etc. that will not be replaced as part of this contract. Contractor shall be responsible for the temporary support of all devices as required to perform work. Any demolition work that needs to be accomplished to complete the contract is the responsibility of the contractor. All material shall be installed per manufacturers’ recommendations. All items listed in the SOW are to be supplied and installed by the contractor unless otherwise noted.

A pre-construction meeting will be held at Shaw AFB to include the Contractor and Government representatives. The Government shall set up this meeting, to be held on Shaw AFB, with the Contractor and Government representatives, to discuss all remodel requirements, as well as any other construction issues the Contractor may have. All finishes shall be presented to the project inspector as one submittal for selection and approval prior to installation. All material that could be discontinued shall be provided on-site so there will be no material discrepancies prior to starting project.

Where specific part numbers or manufactures are referenced, it shall be understood that the contractor may use an approved equal.

Contractors pricing shall take into account all updated code requirements.

END OF STATEMENT OF WORK