Attachment F SOW Tank Cleaning.pdf

Scope of Work

Disinfection, Cleaning, and Inspection of Water Storage Tanks

Overview

Contractor shall provide all parts, materials, services, specialty services, supervision, and testing to pressure wash, disinfect, clean, and inspect quarterly on (2 Each) 500,000 gallon concrete water storage tanks located at the Bay Pines VA Health Care System located at 10000 Bay Pines Blvd, Bay Pines, FL

33744. Contractor shall follow all state, local, and federal guidelines, in addition to American Water

Works Association (AWWA) Standard C652-11.

Contractor shall perform one-time repairs to both of the tanks as described in “Repairs” section of this document.

Repairs

Tank 1:

1. Pressure wash exterior dome and recoating the dome with a flexible, breathable coating such as

Tnemec Enivorcrete 156, or equal. Contractor shall submit color as closely matching existing tank color as possible to be approved by VA COR.

2. Sandblast and coat ductile iron pipes on tank interior with a protective coating suitable for use in potable water tanks such as AquataPoxy A-6, or equal. Repair material shall meet the requirements of ANSI/NSF Standard 61.

3. Replace screens on center vent with a minimize size 20 mesh.

4. Replace screens on emergency overflow openings with a minimize size 20 mesh.

5. Seal Vent on Dome of tank.

Tank 2:

1. Replace the screen on the emergency overflow openings with a minimize size 20 mesh.

2. Seal stainless steel center vent at dome

3. Pressure wash exterior dome and recoating the dome with a flexible, breathable coating such as

Tnemec Enivorcrete 156, or equal. Contractor shall submit color as closely matching existing tank color as possible to be approved by VA COR.

4. Replace screens on center vent with a minimize size 20 mesh.

Submittals

Prior to performing any disinfection procedure, the contractor shall submit his method of disinfection, including the exact type and amount of disinfecting agent to be used with a specific volume of water, the tools and method of application, and the intended amount of chlorine residual. The contractor shall also provide evidence of compliance with Florida Department of Environmental Protection (FDEP), Southwest Florida Water Management District (SWFMD), Occupational Safety and Health

Administration (OSHA), National Sanitation Foundation/American National Standards Institute

(NSF/ANSI), confined space, control of hazardous energy, and fall protection requirements.

Contractor shall also provide submittals of all coating materials, fasteners, screening, parts, and materials to complete repairs on the tanks as stated above.

Contractor shall submit documentation of laboratory accreditation, confined space training requirements, chemicals, parts, materials, and shop drawings. Contractor shall provide a detailed work plan and site specific safety plan within 5 days of notice to proceed.

Inspection Requirements

The contractor shall provide quarterly visual inspection of the tanks, including walls, roof, base, piping, ladders, sensors, vents and a written report verifying the procedure followed, disinfectant type and levels utilized, pictures of inside the tank, pre and post disinfection test results, recommendations for improvements to the overall health of the water tanks, and certification that all disinfection and testing procedures complied with AWWA C652-11 and all state, local, and federal guidelines. The final report shall be submitted to facility no more than 14 calendar days of the completion of the work. Preliminary reports shall be available to establish acceptance of work and test results with AWWA C562-11 and all state, local, and federal guidelines.

Contractor shall complete inspection after completion of repairs and shall document such repairs with before and after pictures. These pictures shall be provided in the final report.

Testing

The contractor shall be responsible for all pre and post disinfection testing requirements in accordance with AWWA C652-11 and state, local, and federal guidelines. These tests shall confirm the appropriate parameters to confirm that the water quality is appropriate for distribution, including, but not limited to: pH, alkalinity, turbidity, odor, specific conductance, and chlorine residual. Samples shall be representative of the water quality in the tank and shall be sampled separately from the bottom, middle, and top of the tank. Bacteriological tests shall show no coliform and acceptable chlorine residual and PH after cleaning is complete. Should any test result come back out of compliance with the

Safe Drinking Water Act or state, local, or federal guidelines regarding potability of water, the contractor shall repeat the disinfection and testing until satisfactory results are obtained. Sampling shall also include the “Optional Sampling and Testing” listed in section 5.1.1.5 of AWWA C652-11. A minimum of two pre and post disinfection test samples from each tank shall be taken and shall follow aseptic techniques for bacteria sampling. The testing lab shall be certified through the Environmental

Laboratory Certification Program and lab approval must be obtained through the contracting officer.

Materials and Equipment

Contractor shall provide all equipment necessary to complete the disinfection and testing, including equipment, materials, and testing needed to meet OSHA requirements for a safe work site. All materials and equipment shall meet the requirements of the Safe Drinking Water Act, AWWA C652-11, and

NSF/ANSI Standards.

Coordination

The contractor shall attend a kick off meeting with the safety office, Contracting Officer’s

Representative, and other applicable personnel to discuss procedures and OSHA requirements 2 weeks prior to start of work. Valves shall only be opened or closed by VA personnel. Tanks will only be taken out of service and drained or put in service by VA personnel. Tank #2 shall be cleaned first and shall satisfactorily meet all testing requirements prior to being placed back in service and Tank #1 being taken out of service.

Methods

Underwater inspection and divers shall not be utilized to complete this scope of work.

The contractor will not have access to sanitary drains to drain chlorinated water from the tanks.

Disposal of any water will be the responsibility of the contractor.

Confined Space The Bay Pines VA Healthcare System complies with the Occupational Safety and Health Administration (OSHA) confined space requirements as detailed in 29 CFR 1910.146. The above ground water tanks located at the C. W. Bill Young Medical Center have been evaluated and deemed to meet the definition of permit required confined spaces. All confined space entry shall comply with 29 CFR 1910.146. A site-specific Confined Space Entry plan, that specifically addresses entry conditions, air monitoring and rescue services, shall be developed and submitted to the Facility Safety and Emergency Management Service.

Confined space entry permits must be authorized by the Facility Safety and Emergency Management Service. Contractors shall coordinate with their Project Manager to request entry permits. Written request to de-classify a (PRCS) to a (CS) may be documented in writing and submitted to the Facility Safety and Emergency Management Office for consideration and approval.

Control of Hazardous Energy A site- specific plan that describes the isolation procedures that the contractor will use, in collaboration with the Facility Engineering staff to isolate and secure plumbed supply water from entering the AST during periods of servicing and maintenance will be required. All installation, maintenance, and servicing of equipment or machinery shall comply with 29 CFR 1910.147.

Fall Protection The fall protection (FP) threshold height requirement is 6 ft (1.8 m) for ALL WORK, unless specified differently or the OSHA 29 CFR 1926 requirements are more stringent, to include steel erection activities, systems-engineered activities (prefabricated) metal buildings, residential (wood) construction and scaffolding work.

1. The use of a Safety Monitoring System (SMS) as a fall protection method is prohibited.

2. The use of Controlled Access Zone (CAZ) as a fall protection method is prohibited.

3. A Warning Line System (WLS) may ONLY be used on floors or flat or low-sloped roofs (between 0 - 18.4 degrees or 4:12 slope) and shall be erected around all sides of the work area (See 29 CFR 1926.502(f) for construction of WLS requirements). Working within the WLS does not require FP. No worker shall be allowed in the area between the roof or floor edge and the WLS without FP. FP is required when working outside the WLS.

4. Fall protection while using a ladder will be governed by the OSHA requirements.

Other Requirements

The contractor shall provide past performance showing at least (3) successful tank cleaning contracts within the last (5) years with tanks of at least 250,000 gallons.

Period of Performance

The contractor shall have 60 days from the Notice to Proceed to complete all work within this scope.

VHA Supplemental Contract Requirements for Ensuring Adequate COVID-19 Safety Protocols for Federal Contractors

1. Contractor employees who work in or travel to VHA locations must comply with the following:

Documentation requirements:

1) If fully vaccinated, shall show proof of vaccination

NOTE: Acceptable proof of vaccination includes a signed record of immunization from a health care provider or pharmacy, a copy of the COVID-19 Vaccination Record Card (CDC Form MLS-319813_r, published on September 3, 2020), or a copy of medical records documenting the vaccination

2) If unvaccinated and granted a medical or religious exception, shall show negative COVID-19 test results dated within three calendar days prior to desired entry date. Test must be approved by the Food and Drug Administration (FDA) for emergency use or full approval. This includes tests available by a doctor’s order or an FDA approved over-the-counter test.

3) Documentation cited in this section shall be digitally or physically maintained on each contractor employee while in a VA facility and is subject to inspection prior to entry to VA facilities and after entry for spot inspections by Contracting Officer Representatives (CORs) or other hospital personnel.

4) Documentation will not be collected by the VA; contractors shall, at all times, adhere to and ensure compliance with federal laws designed to protect contractor employee health information and personally identifiable information.

2. Contractor employees are subject to daily screening for COVID-19 and may be denied entry to VA facilities if they fail to pass screening protocols. As part of the screening process contractors may be asked screening questions found on the following website: COVID-19 Screening Tool. Regularly check the website for updates.

a. Contractor employees who work away from VA locations, but who will have direct patient contact with VA patients shall self-screen utilizing the COVID-19 Screening Tool, in advance each day that they will have direct patient contact and in accordance with their person or persons who coordinate COVID-19 workplace safety efforts at covered contractor workplaces. Contractors shall, at all times, adhere to and ensure compliance with federal laws designed to protect contractor employee health information and personally identifiable information.