P09-SOW Chemical Water Treatment 2022-1-18-22.pdf

PERFORMANCE WORK STATEMENT

CHEMICAL WATER TREATMENT & CLEANING PROGRAM

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1. INTRODUCTION

The water treatment contractor shall be a recognized organization, active in the field of industrial water treatment whose major business is water treatment. The water treatment supplier shall provide chemical treatment services that include chemicals, technical services, consulting, testing, and balancing of the systems herein, for the open cooling tower system, closed chilled water system, hot water system, boiler feed, and condensate water systems. The contractor shall provide a fixed quarterly price to include all chemicals, equipment, and services required to fully treat and maintain all systems.

The monthly water treatment program shall cost-effectively optimize equipment and piping life; minimize water and chemical use; maximize safety; minimize environmental impact; and minimize container handling and operator workload. Services are required for one base year and four option years at the discretion of the Government.

2. REQUIREMENTS

Contractor shall comply with all the following requirements:

A. Provide one (1) experienced Engineer employed full time and has experience in overseeing and evaluating water treatment performance. The Engineer must hold a B.S. degree with a major in Chemistry, Chemical, Civil or Mechanical Engineering from an accredited college or university and must be ASSE 12080 Certified Professional Certified Legionella Water Safety & Management Specialist at the start of the contract. Proof of education is required. The Engineer must be the primary service person who services account weekly. This primary Technical Service Representative shall be capable of arriving on site within two (2) hours in response to an emergency.

Performance measure: Weekly account service is required. Weekly report and review with the Contracting Officers Representative (COR).

B. Provide one (1) Chemist, employed full time and holds a Ph.D. in Chemistry from an accredited college or university. The chemist shall be available to provide technical assistance to the service representatives.

C. Provide one (1) primary technical service Representative who will become a back-up point of contact when the Engineer cannot respond with-in two (2) hours. The Technical Service Representative shall possess a cell phone and be able to respond by telephone within one (1) hour in case of an emergency.

This primary Technical Service Representative shall be capable of arriving on site within two (2) hours in response to an emergency.

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D. The contractor shall ensure that both the Engineer and Service Technician are trained and fully knowledgeable with chemical injection systems, dispersion of chemicals, and testing of chemical content. These same technicians shall also be fully knowledgeable in EPA, OSHA and FDA regulations for chemical handling and mandated procedures for clean-up of spills and provide proof of their training/certification(s). Each company representative shall have experience with direct water treatment experience.

E. The water treatment contractor will provide all necessary labor, materials, tools, equipment, and supervision required to perform the water treatment program with no additional cost to the VA and all equipment will become the property of the VA. Micro-Processor based Smart Chemical Feed Controller.

a) Real time direct monitoring/adjustment for trace inhibitor

b) ORP Control for oxidizing biocide injection with 125mV increase per feed required.

c) Mild steel and copper corrosion monitoring

d) Customer online dashboard for monitoring systems and generation of weekly reports

e) Customer text message/email system alarms used via wireless global gateway: Minimum signal strength required shall be three (3) bars of service, a stronger antenna may be required to maintain the level of cellular service at no added cost to VA.

f) All other equipment such as pumps, tanks with tank level monitoring install fees should be included in monthly fees over the contract duration.

F. Performance measure: No more than one instance per month for failed equipment, all equipment shall be maintained in “as new” condition at all times.

G. The water treatment contractor shall submit a plan of action. The purpose of the plan of action shall define chemical monitoring and treatment equipment, method, chemicals and program initiation. The plane of action shall include existing conditions, recommendations, and a comprehensive program summarize.

3. QALIFICATIONS

A. Each water treatment contractor shall provide a detailed statement of experience, qualifications and background that shows evidence that the water treatment contractor has experience in the water treatment for cooling tower and boiler systems

548-21-1-5500-0011 specifically with each of the following systems: open recirculation cooling towers, closed chilled water, hot water, boiler feed water, and condensate return systems similar to the VA Medical Centers equipment.

NOTE: Proposals that are lacking in this submission requirements will be rated accordingly.

B. Each water treatment contractor shall provide (3) references of similar scope and size in which similar goods and services have been provided to medical facilities including scope of work, contact names, addresses, telephone numbers and dates of services. The contact person shall be someone who has personal knowledge of the bidder’s performance for the specific requirement listed. Contact person must have been informed that they are being used as a reference and that the VA Medical Center may be calling them.

C. Provide written evidence that:

a. The bidder is ISO 9001-1994 or 9001-2000 certified.

b. The water treatment contractor possesses or has direct access to a certified research laboratory capable of performing necessary tests, analysis and research on itemized samples. Bidder shall submit name of laboratory, address and telephone number. The VA reserves the right to visit and inspect the laboratory listed.

4. PRODUCTS AND SERVICES - GENERAL REQUIREMENTS

A. The degreed service Engineer shall provide a routine service to each designated site, a minimum of once per week. The Engineer shall conduct field tests on water samples from each treated system and write a field analysis report of findings and recommendations. The Engineer shall review all reports with the designated VA representative in a summary form, on a weekly basis. In the event the secondary representative provides routine service to the sites and conducts the appropriate tests, the Engineer shall review a copy of the field analysis report with the designated VA representatives. Services shall be performed during normal working hours 0800 – 1600 Monday thru Friday, unless prearranged with the VA.

B. Routine service visits shall include:

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• Inventory of chemicals and, if needed, place orders to restock and avoid outages.

• Verification that application and control equipment is functioning properly

• Monitor corrosion rate on cooling tower system.

• Microbiological evaluation by monitory dip-slides (Vendor to supply incubator for on-site engineers)

• Minor maintenance: to include cleaning of solenoid valves, strainers, corporation stops, manifold assembles pumps and injection equipment.

• Filling of all chemical tanks and removing empty drums and containers

• Maintain remote injection feed for condensate return system if needed to maintain essential Ph levels

• Inventory on reagents and reordering when low

Performance measure: VA Staff shall be mentored and be proficient with monitoring and sampling activities, which shall include a contractor, provide logbook for daily sampling activities. This shall be part of the weekly review.

A legible electronic service report and/or field analysis report shall be provided on site at the time of each routine service. Routine testing for mineral balance, halogen and product levels, conductivity and microbial levels shall be performed once per week on the cooling tower system with a Legionella test and detail report semi-annually, (MARCH AND SEPTEMBER).

The analysis shall include all required test results, control ranges and recommendations for corrective action. The recommendations are not limited to chemical water treatment, but also include analysis, which shall result in improved energy conservation and also equipment life.

5. WATER TREATMENT - COOLING WATER

1. Cooling Tower (Condenser) Water

i. System Volume: 76,401 Gallons

ii. Annual Make-Up Water: 23,565,360 Gallons

Performance measure: Maintain control limits as noted following.

pH 8.5-9.8 Conductivity 2,750-3,400µs (Soft Water Make Up Program) M‐alkalinity <500 PPM Calcium hardness <500 PPM Trace/High Stress Polymer 2nd Generation >100 PPM Phosphonate > 3.0 PPM

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Copper <1.0 PPM Azole >3.0 PPM (Assume 50% absorption) Oxidizing Biocide - Free halogen feed three times per week (Monday-

Wednesday-Friday) to achieve 1-1.5 PPM at end of four-hour feed. 90 PPM per feed used for calculation purposes. Feed three times per week to achieve a free halogen residual of 1 PPM at the end of a four-hour. Provide the minimum/maximum levels in PPM; active ingredients;

container sizes, materials, and types; and recommended dosage schedules in days. Sodium hypochlorite, two-product bromine, are not acceptable substitutes and are not allowed to be used at this VA location.

Non-Oxidizing Biocide – Glutaraldehyde Use 45% concentration fed at 108 PPM once per week on Thursdays injected within a 1-hour timeframe.

Biological Count <10,000 CFU/mL (by strip method inoculated 48 hours prior by site personnel and incubated at 35C) (Incubator provided by vendor)

Corrosion Standards <1.0 Mils per year of Mild Steel; <0.1 Mils per year of copper

Smart Chemical Feed Controller with real time online monitoring for trace inhibitor, pH, ORP, mild steel and copper corrosion including customer online dashboard for weekly reports and real time alarms for plant managers.

Figure 1: Industry Best Practice Cooling Water Installation

2. EVERY DROP OF WATER NEEDS TO SEE EACH BIOCIDE FEED

It may take an average of four biocide feeds per week to properly maintain biological control in a system. Intermittent use allows for stagnant water conditions and biological growth. A plan needs to be developed in the handling

548-21-1-5500-0011 of these conditions. There are a number of options that must be utilized to accomplish this task. Water treatment vendor in writing needs to inform plant operators of biocide feed schedule to match chiller rotation.

3. Cooling Tower Equalization Lines:

Many towers have equalization lines. This is a stagnant water area that needs a remediation plan. These lines need to be flooded with 10 PPM free halogen once per month and blown down for 10 minutes. If equalizer lines do not have 2-3 inch blowdown points then they are required to be installed. It is highly recommended that the condenser water systems sand filtration systems suction line be piped from the equalizer line to pull chemicals down into the equalizer line. It is the water treatment vendors responsibility to confirm these actions are being completed by VA Plant engineers.

A. Initial Change-Over to different Products

It shall be the responsibility of the water treatment contractor to determine the compatibility of any new chemicals with the existing chemicals in the system.

B. Periodic Corrosion Coupon Studies

Corrosion coupon studies shall be run on a 90-day interval basis on the cooling tower system. Corrosion coupons and evaluations shall be furnished, without additional cost. Evaluation of corrosion coupons shall be conducted by the water treatment contractor’s laboratory.

6. WATER TREATMENT - Closed Chilled & Heating Reheat Water Systems

The treatment program shall address the interrelated preventative maintenance items of corrosion control and biofouling control.

Systems Treated

1. Main Hospital Chilled Water Loop

Estimated System Volume: 47,000 gallons

2. Main Hospital Reheat Water Loop

Estimated System Volume: 38,000 gallons

3. CLC Reheat Water Loop

Estimated System Volume: 19,000 gallons

4. OR Chilled Water Loop (Connected to Main Chilled Water System)

Estimated System Volume: 7,800 gallons

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Close Loop Specifications:

Chemical should be feed in filter bag (1 micron) feeder as shown to the right pH 8.7-10.3 Conductivity <4,000 µs Molybdenum >100 PPM Chilled; >150 PPM Hot Azole 10-15 PPM Copper <1.0 PPM Iron <1.0 PPM Biological count <1,000 CFU/mL (by strip method inoculated 48 hours prior by site personnel and incubated at 35C)

Corrosion Standards <1.0 Mils per year of Mild Steel;

<0.1 Mils per year of Copper

Non-Oxidizing Biocide – 45% Glutaraldehyde & Copper Free Isothiazolin (240 PPM) will be alternately fed every six months

7. WATER TREATMENT - Steam Boiler System Make Up Water Usage: 22,102,400 gallons per year

Total Hardness - <10 ppm as CaCO3 Conductivity - < 5,000 umhos; <3,500 umohs neutralized OH – Alkalinity – (50 –100 ppm or 200 – 400 ppm as CaCO3) Silica – < 150 ppm - Dependent on boiler pressure (refer to ASME Guidelines) Iron - < 2.0 ppm as Fe Polymer - > 100 ppm as active polymer OR Phosphate – 20 – 40 ppm (refer to

ASME Guidelines) Must have proper OH Alkalinity Sulfite - 30 – 60 ppm as SO3 (refer to ASME Guidelines) Provide “Smart” boiler controller operation with 3 surface automated blowdown controls based on conductivity. Feed rate is based on make up water meter.

Provide all tank level automation monitors in real time Provide weekly automated reports with all boiler controller information including but not limited to:

o Conductivity in each boiler o Pumps on and off times o Relay states o Tank level (In gallons) o Blowdown operation states o Make up water meter readings.

o Operator alarms/emails/text messages o 7-day charts with all three-boiler status’s

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8. VHA directive 1061

Contractor will conform with VHA directive 1061 to include these new additions:

Heterotrophic Plate Counts. Heterotrophic Plate Count (HPC) testing can provide information on whether engineering controls are preventing bacterial growth. HPC testing is to be performed at system start up and monthly while the cooling tower is in use. Information regarding HPC testing requirements and interpretation of results can be found in VHA Engineering Standard ES-2019-001. NOTE: While HPC testing can provide information about general water quality in the cooling towers, there is no reliable correlation between HPC and Legionella values. The HPC testing requirement is included in this document as a reminder and is additional to the Legionella testing described here.

Legionella Validation Testing. Sampling of each cooling tower for Legionella by culture methodology must be performed within 7 days of startup and every 90 days during periods when the cooling tower is operational or operational-ready (i.e., cleaned, disinfected, full of water and ready for operation). For routine water testing, collection of swab samples is not required, although a VA medical facility may choose to collect swab samples in addition to water samples. Swab samples alone do not meet the requirement of this directive.

Sample Number and Locations. The number of water samples is dependent on the size and configuration of the cooling tower. At a minimum, samples must be collected from each basin/sump, and the supply to and return from the chiller(s). If the chillers are on a common header, only one sample is required.

VA West Palm Beach Requirements:

• Legionella sampling by methodology culture every quarter from all 5 tower basins plus supply and return of main header in the chiller plant.

o Total of 7 CDC Legionella Tests per Quarter (28 per Year)

• HPC testing monthly from all 5 cooling towers plus supply and return of main header in the chiller plant o Total of 7 HPC samples per week (364 Samples per Year)

9. Online Cooling Tower Cleaning & Disinfections Hydrogen peroxide cleaning on all 5 towers every six months. 2x per year (Mid-season). Service includes on-line hydrogen peroxide disinfection twice a year midway through the operating season with documentation.

• The system will be prepared for disinfection with signage around cooling tower yard areas.

• The system will be disinfected using oxidizing biocide 35% hydrogen peroxide (1 gallon of 35% hydrogen peroxide treats 1 gallon of water)

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• A dispersant will be added to help remove organic deposits and enhance disinfection.

• System blow-down will be turned on for at least 24 hours post disinfection to allow system release of biofilms and other solids that may remain suspended in the system.

• All equipment shall be returned to normal operation by the Customer after the blow- down period.

• The disinfection service will be documented with a service report and a certificate for a record of due diligence. Documentation supports a site risk reduction program for control of Legionella in cooling water systems.

Detailed Hydrogen Peroxide Procedure

1. Isolate all chemical feed at least four hours prior to the procedure.

2. Have a Hose with Domestic Water available to dilute in case of spill of product.

3. Unplug Cooling Tower Conductivity Controller or Bleed Relays (Normally

Relay #1).

4. Keep Condenser Water circulating pumps on while during dosage of product and ensure flow to all piping/equipment.

5. Wear proper chemical safety gear (Face Shield, Apron, & Gloves).

6. Record the system turbidity prior to dosage of product.

7. Add 1 gallon of 35% hydrogen peroxide per 1,000 gallons of system volume directly into Tower Sump only.

8. Circulate for two hours through the entire system. Small strainers may need to be cleaned during the procedure.

9. Turbidity should be measured every 30 minutes during the procedure.

10. (If turbidity increase is above 100 NTU from the initial reading, another peroxide cleaning will need to be performed within 90 days)

11. Dose additional 1.25 gallons of 28% hydrogen peroxide per 1,000 gallons of system volume.

12. Circulate for additional two hours.

13. After four hours of circulation with product, system should be bled to remove contaminants prior to Disinfection.

10. Offline Tower Cleaning & Disinfection Specification Two (2) times per year for systems operated year round The disinfection service will be documented with a service report and a certificate for Step 1: Pre-Clean Disinfection for the reduction of biological contaminants

• System will be disinfected using an oxidizing biocide 35% hydrogen peroxide (1 gallon of 35% hydrogen peroxide treats 1 gallon of condenser water). This step it recommended to be completed one more than 5 days

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• A dispersant will be added to help remove organic deposits and enhance disinfection Step 2: Mechanical cleaning for removal of contaminants

Each system cell, equalizer pipe, and/or sump will be isolated and drained for mechanical Hydroblasting cleaning:

• Each system cell will be pressure washed as is reasonably accessible to remove deposits.

• Special care will be taken to remove deposits without damaging the fill pack.

Deposits, including the sump, will be removed for disposal. Baptist Health shall assist with the disposal in the appropriate dumpsters or equivalent.

Step 3: Post-Clean Disinfection for the reduction of biological contaminants

• System will be disinfected using an oxidizing biocide such as chlorine at

12.5% targeting a shock at a level of <10 PPM for 4 hours

• Following start-up procedures for the cooling water system, resume standard water treatment program (including biocide treatment)

• System blow-down will be turned on for at least 24 hours post remediation to allow the system to release of biofilms and other solids that may remain suspended in the system

All equipment will be returned to normal operation by VA Staff after the blow down period. System inspection Quarterly (Performed by Vendor). Equipment Calibration (Monthly).

Documentation and Certification:

• The cleaning and disinfection service will be documented with a service report with photos and a certificate for a record of due diligence.

Documentation supports a site risk reduction program for control of Legionella in cooling water systems.

Detailed Physical Cooling Tower Cleaning & Disinfection Procedure

Cooling Tower Physical Cleaning:

1. Coordinate the shut down and lock out of the system.

2. Confirm that the appropriate Personal Protection Equipment (PPE) is available.

3. Photograph and document the condition of the equipment prior to beginning the cleaning process (fill, hot deck, internals, etc.).

4. Determine the total volume of the sump.

o Total volume (gallons) = length X width X height (in feet) X 7.5

5. Add Hydrogen-Peroxide to the cooling tower sump.

o Add 1 gallon of 35% hydrogen peroxide per 1,000 gallons of system volume directly into Tower Sump only. Add more product, if necessary, to reach the residual. Do NOT use Hypochlorite or liquid bromine.

6. Drain the system after the setup of the necessary equipment.

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7. Plug the intake pipe openings and equalizer valves to prevent debris from entering the system during the cleaning process.

8. Clean the tower from the top down.

o Inspect the hot decks.

o Use a pressure washer to clean out distribution holes and free any blockages.

9. Use Descaler (refer to the treatment supplier for the proper ratio of product to city water) on the hot deck to dissolve existing scale (for 30 minutes), rinse tower with a pressure washer, and send the rinse byproduct to the sanitary sewer.

10. Clean the fan shroud and all working parts that can be accessed from the hot deck.

11. Clean the fill.

a. Begin by spraying the fill with a pressure washer to remove loose sediment.

Descaler may be necessary to dissolve remaining deposits.

12. Clean the inside of the tower.

o Descaler may be necessary.

13. When the fill is clean, use descaler (refer to the treatment supplier for the proper ratio of product to city water) to complete the process.

14. Flush the sump from the outside in, washing all sediment to the center of the tower. Use a screen over the drain to prevent debris from clogging the drain. Use a shop vacuum to remove remaining debris from the sump.

15. The pump and system strainers MUST be cleaned after the tower cleaning is complete, prior to start-up, and again once the system has operated for several hours.

16. Fill the system with water and feed hypochlorite before putting the system back online.

17. Test for free chlorine (minimum of 5 PPM).

18. Coordinate the removal of lockout/tagout before putting the system back online.

19. Document the condition of the cleaned cooling tower (take pictures).

20. Return the system to normal treatment residuals; however, increase the azole level to 10 PPM.

21. Plan for the next cleaning.

o It is strongly recommended that your water treatment supplier be contracted to provide the cleaning services for the cooling towers and chillers.

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11. Chiller Cleaning and Inspection

1. Chillers need to be opened and inspected a minimum of once per year.

o The condenser (tower) bundle should be opened and inspected each year while the evaporator (chill) bundle should be opened and inspected a minimum of every three years.

o The inspection must be done via video borescope so that the conditions can be properly documented.

2. Chiller tubes should be mechanically cleaned a minimum of once per year (tube brushing).

o This includes a physical cleaning of water boxes, end bells, and tube sheets.

3. Chiller tubes should be eddy current tested on a set schedule.

o Enhanced condenser (tower) tubes should be eddy current tested at least once every two years.

o Enhanced evaporator (chill) tubes should be eddy current tested at least once every five years.

o Eddy current inspections should be performed AFTER the tube cleaning is completed.

Chiller Cleaning Procedure:

1. Remove both heads.

a. This allows for a complete discharge of all removed material.

2. All water boxes, tube sheets, and end bells should be brushed to remove excess deposition.

a. If these are not removed, further under deposit corrosion will occur, and the asset will be damaged.

3. Use the correct brush.

a. Dual Diameter Spin Grit – this allows for cleaning of both the landings and grooves of enhanced tubes.

4. Change the brush after five to ten tubes. Brushes must be “Christmas Tree” or “cone Style Brushes.

a. Brushes get worn down and become less effective.

b. Chiller Model Number: 19XRV8586555MCH64S

c. For bid purposes assume each chiller has 350 tubes, meaning bidders will need to budget 350 Tubes/10 tubes per brush = 35 brushes x 5 chillers = 175 total “Christmas Tree” style brushes.

5. Use a reversible tube cleaning machine with the correct torque for the tubes.

6. The tube cleaning should be coordinated with the water treatment supplier (or water consulting firm) bidder will perform a video borescope inspection of the tubes before and after brushing.

a. This will ensure that the tubes have been properly cleaned and will help identify the number of passes it may take to properly clean the remaining tubes.

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b. Two-week notice will help with the coordination and to ensure that a video borescope is available.

7. Brush water should be collected from at least one machine for analysis.

a. This will help in the understanding of the type of material that is depositing in and on the tubes, as well as the level of biological fouling.

8. Immediately following cleaning, the machine should be buttoned-up and filled. The water used to fill the machine (tower water or rat race and chill water) should have a minimum of 10 PPM of azole present.

o When the tubes are cleaned, the azole/copper complex used to protect the tubes is fully removed. You will need excess azole (10 PPM or greater) to rapidly repassivate the tubes and properly protect them.

Yearly Cleaning Schedule* 1st Quarter: Offline Cleaning & Disinfection & Annual Chiller Tube Cleaning 2nd Quarter: Online Cleaning & Disinfection 3rd Quarter: Offline Cleaning & Disinfection 4th Quarter: Online Cleaning & Disinfection

*Utility Plant Manager will schedule exactly what days cleanings will occur during the applicable quarter

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12. Salt Delivery

Included in this this scope of work is to provide salt for the cooling towers. Rivera Beach Water is not acceptable to run as the hardness is very high. This salt holding tank below holds 25 metric tons of salt. Bidder shall include pricing on contract for 200 metric tons of salt per year delivered to the tank shown below in the cooling tower yard. Bidders shall also include pallet/bag delivery salt for the boilers inside the boiler room.

13. Softener Maintenance: All water softener equipment will be maintained OFF contract as a “as needed” or separately quoted and issued separate PO for any repairs of softener equipment for the cooling towers and boilers.

Salt delivery connection point

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14. Disinfection, Cleaning, and Inspection of Water Storage Tanks (2x Per Year)

Overview This service contract is to provide all labor, tools, material, and special equipment necessary for a contractor to perform inspections, testing, cleaning, disinfection to one (1) 500,000 gallon steel above ground water storage tanks located at Department of Veterans Affairs Medical Center, 7305 N. Military Trail, West Palm Beach, FL. Contractor shall follow all state, local, and federal guidelines, in addition to American Water Works Association (AWWA) Standard C652-11.

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 FDEP, SWFMD, OSHA, NSF/ANSI, confined space, control of hazardous energy, and fall protection requirements. Site visit is strongly recommended by contractors to verify all existing conditions.

Inspection Requirements The contractor shall provide a visual inspection of the tanks 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.

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Cleaning The contractor shall be responsible for cleaning of the interior of the water tank / tower, removing all sediment build-up, pressure washing tank walls.

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, chlorine residual, and coliform. Samples shall be representative of the water quality in the tank. Bacteriological tests shall show no coliform 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 potabiliy 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 water tank shall be taken and shall follow aseptic techniques for bacteria sampling. The testing lab shall be NELAP certified 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.

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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. Valves shall only be opened or closed by VA personnel.

The water storage tank will only be taken out of service or put in service by VA personnel. The water storage tank shall be cleaned first and shall satisfactorily meet all testing requirements prior to being placed back in service.

Confined Space The above ground water tank located at Department of Veterans Affairs Medical Center, 7305 N. Military Trail, West Palm Beach, FL have been evaluated and deemed to meet the definition of permit required confined spaces. All confined space entry shall comply with the Occupational Safety and Health Administration (OSHA) confined space requirements as detailed in 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.

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

Additional Requirements

All work shall be in accordance with Occupational Safety and Health Administration (OSHA), VA standards, and other related codes.

All shut downs shall be coordinated with COTR. Shut down might occur at hours outside of traditional 1st shift, on Holidays, or on weekends. Include such implications in cost proposal.

Workmen are subject to all the rules of the Medical center and expected to use personal protective equipment when necessary.

Contractor tools and equipment shall be continuously under direct line of sight supervision of the contractor. NO tools / equipment can be left at the individual work sites overnight.

Contractor shall clean-up work sites daily. No debris can be left at work sites.

Burn permit is required within 7 days prior to the commencement of installation which will be issued by VA’s COTR.

Contractor preforming work shall provide all necessary Florida State license, certifications, permits, and other related documentation from a nationally recognized certification program dedicated to drinking water regulations for domestic water systems. Contractor shall submit documentation prior to the commencement of work.

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Please provide one monthly cost for all chemicals, service, cooling tower online/offline cleanings, tube brushings, analytical bacteria testing & cooling tower cleanings and disinfections.

Contract Monthly Billing Amount Yearly Cost Year 1 Year 2 Year 3 Year 4 Year 5

Special Conditions

Non-Traditional Water Treatment: NO non-traditional water treatment devices will be considered for use at the VA Medical Center. This includes, but in not limited to;

magnetic devices, electroplating, chemicals that require no bleed, special filtration systems

Provide equipment specifications, manufacturer literature, chemical product data sheets, and MSDS sheets.

Provide onsite training for operating personnel along with logbooks for daily readings.

The chemical treatment supplier guarantees to keep the condenser tubes free of scale.

If the condenser tubes are not free of scale at the end of the operating season, the chemical treatment supplier shall clean the system at no cost to VA Medical Center.

Installation of all equipment including plumbing is by the chemical treatment supplier.

Additional VA requirements, and conditions:

1. Contractors are NOT allowed to visit the site. Please see photos below and lab tests of current conditions of water systems and equipment.

2. VA will provide NO tools and NO equipment.

3. VA will NOT receive, load or unload, and transport contractors’ materials / equipment.

4. Out year, proposed costs shall include all inflation, escalation, and all other considerations.

5. Contractor shall provide all necessary PPE.

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Boiler Room View

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Temporary Boilers are feed chemicals from the DA tank in the main plant. All chemicals feed into the plants DA tank will also feed the temporary boilers.

OR Chiller System

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DA Tank

DA Sample Cooler

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Sulfite feed directly to DA Tank

Amie Feed Directly to Steam Header

Main Chilled Water Loop Chemical Feeder and Sediment Filter

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Boiler Softener System and Make up Meter ties to Boiler Chemical Controller to control chemical feed pumps.

Condensate Receiver Tank

Direct Boiler Inhibitor Feed to DA Feed Water

Boiler Surface Blowdown Valves & Conductivity Probe (3 total)

Boiler Chemical Feed Tanks

Cooling Tower Yard & Equalizer Pipe

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Cooling Tower Back Flow Preventor & Make Up Water Softeners (Just feeding Cooling Towers)

Cooling Tower Yard and Crain

Condenser Water Pumps in CT Yard

Chiller Room & Chemical Controller Home Screen

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Cooling Tower Chemical Feed Tanks, Coupon rack and injection points directly into header via quills

Boiler blowdown controller and tank level monitors

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Boiler Water Sampling Points

Chemical Testing station located in Boiler Room

Condensate Sample Cooler

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Main Reheat Loop Heat Exchangers

Main Reheat Loop Chemical Feeder

Main Reheat Loop Filter

CLC Reheat System & Chemical Filter Feeder

A. The degreed service Engineer shall provide a routine service to each designated site, a minimum of once per week. The Engineer shall conduct field tests on water samples from each treated system and write a field analysis report of findings and re...