SludgeHT.pdf
PDF 5 MB Posted
- Attached to
- Tank Inspections & Repairs & On-Call Services
- Solicitation number
- 26-031-ITB
- Issued by
- Bell County, Kentucky
About this file
This file comprises inspection reports documenting tank repair work conducted at Cincinnati/Northern Kentucky International Airport (CVG), operated by the Kenton County Airport Board, on a 2-million gallon partial below-ground open-top concrete sludge holding tank located in Hebron, Kentucky. The inspection reports, prepared by NACE Certified Coating Inspector Gregory Charles Hardig Sr. (Level-3, Cert #3494), cover repair and lining work performed on September 21, 26, and 27, 2022. The scope of work includes tank wall cap repairs, wall gunnite repair inspection, and floor liner repairs involving surface preparation through abrasive blasting, crack repair using CIM-EMT primer for cracks smaller than a fingertip and concrete repair cement for larger areas, and application of CIM (Ceramic Inorganic Metal) coatings. The tank, originally constructed in 2003, required water extraction from the floor before liner repairs could proceed. Environmental safety protocols, including job safety analysis (JSA) and air quality monitoring (20.8% oxygen levels), were documented throughout the inspection process.
The related contract opportunity seeks bids for Tank Inspections & Repairs & On-Call Services from the Kenton County Airport Board, with questions due by 11:59 p.m. on Monday, May 11, 2026, answers to be posted by Thursday, May 14, 2026, and bids required by Thursday, May 21, 2026 at 2:00 p.m. The inspection reports provide historical documentation of previous repair methodologies, material specifications, and inspection protocols that may inform bidders' proposals and technical approaches for this procurement. No other pricing, set-aside, funding, or award information is contained within the inspection file itself.
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Kenton County Airport Board 2-Mil-partialBelow-ground open top Concrete Tank repair Inspection Report 9-21-2022
Cincinnati / Northern Kentucky International Airport (CVG)
Kenton County Airport Board 2-Million gallon Partial Below-ground
Open-top Concrete Tank AKA: Sludge Holding Tank
Hebron KY 41048 Tank wall cap repair Lining Inspection
Report
September 21, 2022
Report commissioned by:
Scott Thacker, Sr. Manager Environmental Operations
Cincinnati / Northern Kentucky International Airport (CVG) Kenton County Airport Board
P.O. Box 752000 Cincinnati, OH 45275
Sthacker@cvgairport.com
Prepared by:
Gregory Charles Hardig Sr.
NACE CIP Level-3 Cert # 3494 mailto:Sthacker@cvgairport.com
Kenton County Airport Board 2-Mil-partialBelow-ground open top Concrete Tank repair Inspection Report 9-21-2022
General:
The plan for the day is to Inspect and report on the repairs of the tank wall cap, the wall gunnite repair, and the floor liner repair in the 2m Sludge Holding located near the wast water treatment plant.
Environmentals were recorded. Air quality was good with 20.8/oxygen.
With JSA and a meaningful discussion on safety and the plan for entering the tank, I made entry.
The tank was constructed in 2003.
Kenton County Airport Board 2-Mil-partialBelow-ground open top Concrete Tank repair Inspection Report 9-21-2022
The CIM linner pad was cleaned and abrasive blasted. It is ready for surface conditioner and re-lining. Note this area id black in the photo.
Kenton County Airport Board 2-Mil-partialBelow-ground open top Concrete Tank repair Inspection Report 9-21-2022
The area between the two lined from the first platform up to just above the top of the scaffolding is where the Gunnite repair has been chipped out and abrasive blasted.
Kenton County Airport Board 2-Mil-partialBelow-ground open top Concrete Tank repair Inspection Report 9-21-2022
As the contractor works on abrasive blasting the tank wall cap. Some cracks have been discovered.
The repair method for the cracks is if they are smaller than a fingertip, they will get the CIM-EMT primer followed by the CIM.
Kenton County Airport Board 2-Mil-partialBelow-ground open top Concrete Tank repair Inspection Report 9-21-2022
It is noted that this is also the location of where one of the tether cables is mounted for the floating aeration pump on the inside of the tank.
In one location, a larger spot was uncovered during the abrasive blasting. This spot will be formed with Masonite, then an acrylic bonding agent will be applied to the old concrete. Then the concrete repair cement will be mixed fortified with the bonding agent and troweled into place. Once dry, it will be primed and topped with the CIM.
Respectfully submitted.
NACE Certified Coating Inspector Level-3 Cert #3494 My commission expires April 2025
Note: This report was assembled using the best means available in the current conditions. While we have applied our best experience and academic research to our conclusions, field conditions and recommendations are subject to change and the engineer/inspector assumes no liability for its use or outcome as contained in this report.
Corrosion Protection Resources LLC. All rights reserved www.cprcoatings.com http://www.cprcoatings.com/
Kenton County Airport Board 2-Mil-partialBelow-ground open top Concrete Tank repair Inspection Report 9-26-2022
Kenton County Airport Board 2-Million gallon Partial Below-ground
Open-top Concrete Tank AKA: Sludge Holding Tank
Hebron KY 41048
September 26, 2022
Cincinnati / Northern Kentucky International Airport (CVG) Kenton County Airport Board
P.O. Box 752000
Kenton County Airport Board 2-Mil-partialBelow-ground open top Concrete Tank repair Inspection Report 9-26-2022
The plan for the day is to Inspect and report on the repairs of the tank wall cap, the wall gunnite repair, and the floor liner repair in the 2m Sludge Holding located near the waste water treatment plant.
Environmentals were recorded. Air quality was good with 20.8/oxygen.
With JSA and a meaningful discussion on safety and the plan for entering the tank, I made
The tank was constructed in 2003.
The repair method for the cracks is if they are smaller than a fingertip, they will get the CIM-EMT primer. The larger cracks will get the addition of aggregate to help in the filling.
Kenton County Airport Board 2-Mil-partialBelow-ground open top Concrete Tank repair Inspection Report 9-26-2022
Kenton County Airport Board 2-Mil-partialBelow-ground open top Concrete Tank repair Inspection Report 9-26-2022
It is noted that the owner will extract the water left on the bottom of the tank before the floor liner can be repaired.
Kenton County Airport Board 2-Mil-partialBelow-ground open top Concrete Tank repair Inspection Report 9-26-2022
The surface was blasted and primed and filled with the CIM EMT primer.
Kenton County Airport Board 2-Mil-partialBelow-ground open top Concrete Tank repair Inspection Report 9-26-2022
The CIM Premix 1000 was mixed, and brush applied to the tank wall cap.
Kenton County Airport Board 2-Mil-partialBelow-ground open top Concrete Tank repair Inspection Report 9-26-2022
Summary, Tomorrow the masking will be removed from the exterior, and the repairs will move into the inside of the tank.
NACE Certified Coating Inspector Level-3 Cert #3494 My commission expires April 2025
Note: This report was assembled using the best means available in the current conditions. While we have applied our best experience and academic research to our conclusions, field conditions and http://www.cprcoatings.com/
Kenton County Airport Board 2-Mil-partialBelow-ground open top Concrete Tank repair Inspection Report 9-27-2022
Kenton County Airport Board 2-Million gallon Partial Below-ground
Open-top Concrete Tank AKA: Sludge Holding Tank
Hebron KY 41048
September 27, 2022
Cincinnati / Northern Kentucky International Airport (CVG) Kenton County Airport Board
P.O. Box 752000
Kenton County Airport Board 2-Mil-partialBelow-ground open top Concrete Tank repair Inspection Report 9-27-2022
The plan for the day is to Inspect and report on the repairs of the tank wall cap, the wall Gunnite repair, and the floor liner repair in the 2m Sludge Holding located near the wastewater treatment plant.
Environmentals were recorded. Air quality was good with 20.8/oxygen.
With JSA and a meaningful discussion on safety and the plan for entering the tank, I made
The area on the exterior of the cap where the concrete had given away was repaired and rubbed out to match the existing texture.
Kenton County Airport Board 2-Mil-partialBelow-ground open top Concrete Tank repair Inspection Report 9-27-2022
The Gunnite repair was sealed over with the application of the CIM
Kenton County Airport Board 2-Mil-partialBelow-ground open top Concrete Tank repair Inspection Report 9-27-2022
With the water removed from the floor and the surface dry, the workers moved to solvent wipe the resdue off of the existing black liner to ready it to receive the CIM top coat.
After cleaninf, the CIM Bonding-agent was roller applied.
Kenton County Airport Board 2-Mil-partialBelow-ground open top Concrete Tank repair Inspection Report 9-27-2022
The CIM 1000 Premix was mixed up and applied using notched squeegee and brushes.
Kenton County Airport Board 2-Mil-partialBelow-ground open top Concrete Tank repair Inspection Report 9-27-2022
The workers worked there way across the area.
Kenton County Airport Board 2-Mil-partialBelow-ground open top Concrete Tank repair Inspection Report 9-27-2022
Summary, Having successfully completed the liner repairs, the workers removed the equipment from inside the tank.
NACE Certified Coating Inspector Level-3 Cert #3494 My commission expires April 2025
Note: This report was assembled using the best means available in the current conditions. While we have applied our best experience and academic research to our conclusions, field conditions and http://www.cprcoatings.com/
| Kenton County Airport Board 2-Mil-partial Below-ground open top Concrete Tank repair Inspection Report 9-21-2022 |
| Kenton County Airport Board 2-Mil-partial Below-ground open top Concrete Tank repair Inspection Report 9-26-2022 |
| Kenton County Airport Board 2-Mil-partial Below-ground open top Concrete Tank repair Inspection Report 9-27-2022 |
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