SOW CCTV of piping revised 11-22-23.doc

SCOPE OF WORK AND SPECIFICATIONS

for Cleaning and CCTV of Air Station Building 55 Deluge Wastewater Storage Tank Piping U.S. Coast Guard Base

Elizabeth City, N.C.

November 21, 2023 Commanding Officer

United States Coast Guard

Base Elizabeth City

FACILITIES ENGINEERING DEPARTMENT

Elizabeth City, N.C. 27909

1. BACKGROUND/SCOPE:

1.1. Recent release within mechanical room of Hangar 55 dumped approximately 500 gallons of concentrated 3% AFFF foam into floor drains ultimately making its way to 96K gallon Deluge tanks (i.e., Tanks 1 & 2). A contract was recently completed to clean both tanks, approx. 350 linear feet of 24” diameter concrete piping between Hangar 55 and Tank 1, and approx. 650 linear feet of 24” piping between Tanks 1 & 2. Water was found to be infiltrating both pipes during this process. The pipe between Hangar 55 and Tank 1 was flushed and cleaned, and the pipe between Tank 1 and Tank 2 was assumed to be flushed by the groundwater infiltration and not cleaned.. Inflatable plugs were placed in each end to isolate this approx. 650’ section of 24” piping between the two tanks. Each concrete Partially Underground Storage Tank is constructed the same with 96,000-gallon capacity/ea. and dimensions of 10’ deep and 40’ diameter. It appears the 24” piping from Hangar 55 to Tank 1 is clear and should not require significant cleaning prior to CCTV. Contractor should assume cleaning of sludge buildup in the 650’ section of 24” piping between the two tanks, not to exceed one third volume, will be required prior to CCTV.

1.2. Contractor shall provide all tools, equipment, labor, supervision, and required certifications to gas free, vacuum/clean, dispose of wastewater/sludge and CCTV approximately 1,000 linear feet of 24” underground piping.

2. GOVERNMENT FACILITIES AND UTILITIES:

Electrical power and potable water are available on the site. The Contractor will be permitted to utilize these utilities in performing the work, provided that the existing systems are not overloaded and exist in the areas work needs to be accomplished. Telephone services will not be available for use by the contractor however cell reception is normally reliable onsite.

3. MATERIALS AND LOCATIONS:

No materials or wastes are to be stored on site at any time during this evolution. Parking is very limited, and all vehicles must have a current inspection and be free of leaks at all times. Limited equipment will need to be staged on site however the contractor should understand that the government will not be held responsible in anyway if equipment or tools are found missing or damaged while onsite. All staging areas will be pre-approved by the Contracting Officers Representative and/or Technical Representative. Special precautions shall be taken to ensure equipment does not enter the airfield fence line without the proper escort and permissions. The Contractor is required to comply with all Federal, State and Local laws and regulations; including but not limited to CAA, CWA, RCRA, CAMA/CZMA, NEPA, NHPA as applicable. Contractor shall also comply with all Base Elizabeth City policies, permits and City ordinances. All applicable Safety Data Sheets (SDSs) shall be available onsite and upon request. All tanks, piping and dispensing devices shall be double walled and/or have secondary containment. All valves and joints shall be leak free and have containment. The Contractor shall provide appropriate spill materials for all areas where work is performed and have trained spill response individuals on site during working hours. No water, sludge or debris from this project shall be allowed to enter the soil or surrounding waterways, storm drains or sewage system. All debris, materials, liquids, wastes are to be disposed of IAW RCRA and transported IAW DOT.

4. SCHEDULE OF WORK:

Completion of work shall be accomplished within 30 calendar days from award. The Contractor shall perform all work during normal Base Elizabeth City working hours. The Base’s normal working hours are 0700 to 1530, Monday through Friday. Alternate working hours may be acceptable but must first be cleared by the COR in writing.

5. EXISTING CONDITIONS:

The contractor is expected to satisfy themself as to the existing conditions and the work to be performed. The contractor shall verify all dimensions, capacity, accessibility, contents and equipment data prior to ordering materials, equipment etc. and commencement of work.

6. SITE VISIT: Contractors are encouraged to make a pre-bid site visit. Contractors shall coordinate access to Base Elizabeth City for the purpose of Site Visit through the Contracting Officer Representative CWO Laura Freeman @ (252) 335-6116.

7. LIABILITY OF CONTRACTOR:

Any damage to government property caused by the contractor shall be repaired or replaced by the contractor at no cost to the government. The contractor shall not disconnect any service without approval from the COR or his/her technical representative.

8. INSPECTION AND ACCEPTANCE: The COR and/or his/her technical representative will accomplish inspection and acceptance of work.

9. LABOR LAWS: Davis-Bacon Area Wage Rates are applicable to this project.

10. ENVIRONMETNAL/SAFETY: The Contractor is wholly responsible for work site safety and Environmental Compliance. The Contractor shall implement a safety program that protects the lives and health of personnel in the working area, prevents damage to property, and avoids work interruptions. The Contractor shall abide by the Resource Conservation and Recovery Act (RCRA) Part B Permit, the National Pollutant Discharge Elimination System (NPDES) Stormwater Permit, Base’s Spill Pollution Control and Countermeasures Plan (SPCCP), post a list of all contact numbers in the event of a spill (252) 335-6257, the City of Elizabeth City’s Fat’s Oils and Greases Program and the Base’s Industrial User/ Wastewater Permit. The Contractor shall properly train individuals regarding the Base’s SPCCP. The Contractor shall properly sample, analyze and dispose of all waste IAW RCRA. All manifests shall be signed by qualified DOT Certified Generator’s representative (252) 335-6879. The Contractor shall have all required certifications onsite and available upon request for all work required. The Contractor shall provide appropriate safety barricades, signs, signal lights, etc. as well as comply with the requirements of all Federal, State and Local safety requirements, laws, rules, and regulations.

11. GOVERNMENT FACILITIES AND REGULATIONS: The Contractor, their employees, and any sub-contractors shall become familiar with and obey all applicable Base/ Unit Policies, Plans and Permits. All personnel employed on the project shall keep within the limits of the work area and shall not enter any other area outside of the work site unless to do so in the performance of their duties. There shall be No Smoking in any Coast Guard Building. Smoking is allowed in designated smoking areas only.

12. CONTRACTING OFFICER’S REPRESENTATIVE: The Contracting Officer’s Representative (COR) will be designated at the notice to proceed.

13. SUBMITTALS: Once awarded, the following list of submittals required for approval defines the specific minimum requirements for this contract. The submittal shall contain sufficient information that can be used to determine compliance of the material with these specifications and referenced specifications.

13.1. HAZWOPER trained and certified Waste handler certifications.

13.2. DOT HAZMAT licensed/certified Vacuum truck operator/driver

13.3. Qualified Individual under OSHA for Confined Space clearing and entry.

13.4. Waste Disposal Plan

13.5. CCTV Technician Qualifications

14. DELIVERABLES:

14.1. Sewer Inspection Data - CCTV recordings (CD or DVD format)

14.2. Manifests of waste disposal

14.3. Estimated cost of piping repair

15. REFERENCE FILES

15.1. DWG - ND-3727 SHT C5 – Civil Utility Plan

15.2. Reference Photos below

16. TECHNICAL REQUIREMENTS:

16.1. GENERAL: Contractor shall provide all tools, equipment, labor, supervision, and required certifications to gas free, vacuum/clean, properly dispose of wastewater/sludge from approximately 1,000 linear feet of 24” diameter piping.

16.1.1. Access to subject 24” piping will require entering Tanks 1 & 2 shown on reference drawing. Contractor shall provide gas free engineering services for entering Tank 1 & Tank 2 as referenced on drawing provided. Each Tank has been cleaned recently and dimensions of tanks are 10’ deep x 40’ diameter. USCG personnel will be responsible for pumping down of tanks to maximum extent possible and securing incoming flow. Contractor will be responsible for removal of plugs on either end of 650’ section of 24” piping and, at the conclusion of work, reinstalling the plugs if necessary.

16.1.2. Contractor to take representative grab samples, analyze, characterize, and prepare waste profile for proper disposal of wastewater, sludge, etc. IAW RCRA. Analysis shall include Volatile Organic Compounds, Semi Volatile Organic Compounds, PFOA & PFAS. Contractor will be responsible for proper cleaning of all piping in preparation for CCTV as well as storage and disposal (offsite) of waste IAW RCRA. For the purpose of this proposal, the contractor shall assume wastewater/sludge is non-hazardous and can be disposed of as such. If testing reveals otherwise, a modification to the contract will be required. The contractor shall assume approx. 25 cubic yards of sludge will need to be removed from the 24” piping between Tanks 1 & 2.

16.1.3. Contractor shall dewater tanks as necessary to clean, televise and inspect (CCTV) subject 24” lines as referenced in drawing.

16.1.3.1. CCTV video of all subject piping IAW National Association of Sewer Service Companies (NASSCO). Videos shall be recorded on CD or DVD storage media to be provided to the government.

16.1.3.2. CCTV shall include comments of defects in piping including cracks, separation of joints, collapsed pipe, grade irregularities, leaks, roots, offset joints, reverse grades, obstructions, missing pipe, restrictions, fractures, and similar structural irregularities.

16.1.4. Contractor to provide detailed estimate for repairs (i.e., lining or replacement) to subject piping. Estimate shall include a breakdown showing materials, labor, equipment, and supervision.

Figure 1 – Top of Tank 1

Figure 2- 24" Piping from Hangar 55 into Tank 1

Figure 3 - 24" Plug Discharge Piping from Tank 1 to Tank 2

Figure 4 - Top of Tank 2

Figure 5 - Tank 2 Interior

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