RFQ 19MX5326Q0028 for water treatment.docx

TABLE OF CONTENTS

SECTION 1 - THE SCHEDULE

· SF-1449 cover sheet

· Continuation To SF-1449, RFQ Number 19MX5326Q0028, Prices, Block 23

· Continuation To SF-1449, RFQ Number 19MX5326Q0028, Schedule Of Supplies/Services, Block 20 Description/Specifications/Work Statement

· Attachment A to Statement of Work

· Attachment B to Equipment List

· Attachment C to Payment Registration Form – Pesos

· Attachment D to Payment Registration– USD to a bank in the United States

· Attachment E to Payment Registration– USD to a bank in Mexico

· Attachment F to Vendor Portal Registration

· Attachment G Safety Plan

SECTION 2 - CONTRACT CLAUSES

· Contract Clauses

· Addendum to Contract Clauses - FAR and DOSAR Clauses not Prescribed in Part 12

SECTION 3 - SOLICITATION PROVISIONS

· Solicitation Provisions

· Addendum to Solicitation Provisions - FAR and DOSAR Provisions not Prescribed in Part 12

SECTION 4 - EVALUATION FACTORS

· Evaluation Factors

· Addendum to Evaluation Factors - FAR and DOSAR Provisions not Prescribed in Part 12

SECTION 5 - REPRESENTATIONS AND CERTIFICATIONS

· Addendum to Offeror Representations and Certifications - FAR and DOSAR Provisions not Prescribed in Part 12

SECTION 1 - THE SCHEDULE

CONTINUATION TO SF-1449

RFQ NUMBER 19MX5326Q0028

PRICES, BLOCK 23

1. SCOPE OF SERVICES

1.1 General.

The Contractor shall be responsible to provide water treatment maintenance services at the Mexico City Embassy compound in accordance with this contract.

1.2 The water treatment systems to be maintained are : (Domestic Potable Water Treatment System and Treated-Recycled Water)

The Contractor must demonstrate a high level of expertise, along with the necessary abilities, resources, licenses, and permits to perform the specified activities in compliance with all applicable local and federal Mexican regulations. Additionally, the contractor shall adhere to the highest industry standards and maintain superior quality in the execution of these duties. Excellence in customer service is also required as requested and approved by the Contracting Officer in accordance with the specifications, terms and conditions set forth herein.

1.3 Contract Type.

This is a firm-fixed price contract.

1.4 Period of Performance.

The performance period under this contract will commence on the date listed in the Award Letter and continue for twelve (12) months. This contract also contains FAR 52.217-9. “Option to Extend the Term of the Contract”. This option allows one (1) additional 12-month periods of performance. ). Site visits for preventive maintenance services must be scheduled with a minimum of ten (10) business days’ advance notice to ensure proper access and support.

1.5 Currency.

1.5.1 Offer and Payment in U.S. Dollars.

U.S. firms are eligible to be paid in U.S. dollars. U.S. firms desiring to be paid in U.S. dollars should submit their offer in U.S. dollars. A U.S. firm is defined as a company which operates as a corporation incorporated under the laws of a state within the United States. Local companies are eligible to be paid in U.S. dollars provided that such company has a bank account in U.S. dollars at a Local Bank.

1.5.2 Offers and Payment in Pesos, Mexican Currency.

Any firm that is not a U.S. firm is a foreign firm. Any local or foreign firm that does not meet the definition of a U.S. firm shall submit its prices and receive payment in local currency unless the foreign or local firm has a U.S. dollar bank account in Mexico.

1.6 Value Added Tax.

1.6.1 U.S. Firms.

Value Added Tax (VAT) is not applicable to U.S. firms; therefore, it shall not be included in U.S. firm’s rates or Invoices.

1.6.2 Local Companies.

Value Added Tax (VAT) for offers submitted by local companies, either in U.S. Dollars or in Pesos, Mexican currency, is not included in line-item rates. Instead, it will be priced as a separate amount in the contract and on the Invoices. Local law dictates the portion of the contract price that is subject to VAT; this percentage is multiplied only against that portion.

1.7 Pricing.

The fixed prices established below for the Base Year maintenance services for water treatment services plus one (1) Option Year are fully loaded rates that include all work, including furnishing any managerial, administrative, and direct labor (in compliance with any local regulations), materials, overhead, insurance, and profit. Any costs not separately priced shall be considered to be included in the overhead and other indirect costs. The U.S. Government will not pay any additional expenses.

1.7.1 Base Year Prices.

The firm fixed-price for this Base Year shall be a fully loaded rate.

As per paragraph 1.5 above, Base Year Prices are in _______________ [Insert Currency].

Unit Total per Year ($)

Potable and Recycled Water Treatment System

Subtotal Base Year

Value Added Tax (VAT)

Total Base Year

1.6.2. First Option Year Prices.

The firm fixed-price for this First Option Year shall be a fully loaded rate.

As per paragraph 1.4 above, Base Year Prices are in _______________ [Insert Currency].

Unit Total per Year ($)

Potable and Recycled Water Treatment System

Subtotal Base Year

Value Added Tax (VAT)

1.6.3 GRAND TOTAL OF BASE AND OPTION YEARS

Base Year Total

Option Year 1 Total

GRAND TOTAL

1.7 Repair option.

Repairs are not included under this contract (see Statement of Work, Attachment A) and are to be done outside this contract. However, the Government desires current labor rates in the event that there is an issue discovered during the preventive maintenance of the specified equipment. Please provide your current labor rates in the Repair Option fields below. As stated in the Work Statement, any necessary repairs or parts will be submitted for approval and then billed against a separate Purshase Order. The Contractor is not approved to do any additional work without specific authorization from the Contracting Officer.

1.7.1 Repair Labor Rates.

Base Year

Option Year 1

1.7.2 Emergency Service Option. Emergency Service is NOT included under this agreement and will be billed outside the contract. However, we would like to have the rates in the event of an emergency. Emergency Service, with a four-hour response time, must be available 24-hours per day, 365 days a year. Submit cost for Emergency Services below.

Emergency Service Rates

2. ACRONYMS

· CDMX: Mexico City

· CLIN: Contract Line Item Numbers

· CO: Contracting Officer

· COR: Contracting Officer’s Representative

· CY: Calendar Year

· DS: Diplomatic Security

· FAC: Facility Manager

· FAR: Federal Acquisition Regulation

· FM: Facility Manager

· GSO: General Service Office

· HAZMAT: Hazardous Materials

· JHA: Job Hazards Analysis

· MSDS: Material Safety Data Sheet

· O&M: Operations and Maintenance

· OEM: Original Equipment Manufacturer

· PCC: Post Communications Center

· PCO: Post Control Officer

· PM: Preventive Maintenance

· PMSC: Preventive Maintenance System

· POSHO: Post Occupation Safety and Health Officer

· QAP: Quality Assurance Plan

· RSO: Regional Security Officer

· SBU: Sensitive But Unclasssified

· SOW: Statement of Works

· SPT: Safety Plan Template

· US: United States

· USPP: United States Personal Property

· VFD: Variable Frequency Drive

3. INSURANCE REQUIREMENTS

3.1 Personal Injury, Property Loss or Damage (Liability). The Contractor assumes absolute responsibility and liability for any and all personal injuries or death and property damage or losses suffered due to negligence of the Contractor’s personnel in the performance of this Contract.

The Contractor’s assumption of absolute liability is independent of any insurance policies.

3.2 Insurance. The Contractor, at its own expense, shall provide and maintain during the entire period of performance of this Contract, whatever insurance is legally necessary. The Contractor shall carry the following minimum insurance:

Public Liability Insurance

3.3 Workers’ Compensation and Employer’s Liability

Worker's Compensation Insurance. The Contractor agrees to provide all employees with worker's compensation benefits as required under local laws (see FAR 52.228-4 “Worker’s Compensation and War-Hazard Insurance Overseas”).

4. LOCAL LAW REGISTRATION

If the local law or decree requires that one or both parties to the contract register the contract with the designated authorities to ensure compliance with this law or decree, the entire burden of this registration shall rest upon the Contractor. Any local or other taxes which may be assessed against the Contract shall be payable by the Contractor without Government reimbursement.

5. LICENSES AND PERMITS

The contractor shall perform the duties specified in this SOW in full compliance with all applicable local and federal regulations of Mexico and the United States, as well as applicable international standards and any additional regulations outlined in this document. The contractor shall also provide evidence of all necessary licenses, permits, and registrations required to complete the specified duties.

6. SAFETY REQUIREMENTS

The contractors shall provide and maintain work environments and procedures which will safeguard the public and Government personnel, property, materials, supplies, and equipment exposed to contractor operations and activities; contractors must avoid interruptions of Government operations and delays in project completion dates, and control costs in the performance of contract tasks. For these purposes, the contractor shall:

1. Submit a written Safety plan and JHA to the COR. The plan shall include specific management or technical procedures for effectively controlling hazards associated with the project/contract; the safety plan shall also include emergency procedures in case of any incident with his personnel.

2. Meet with the COR and the POSHO to discuss and develop a mutual understanding relative to the administration of the overall safety program.

3. Maintain an accurate record of all incidents that occurred under the contract resulting in death, injury, occupational disease, or damage to or theft of property, materials, supplies, or equipment.

4. Report all incidents/mishaps immediately in the manner indicated by the COR and/or POSHO.

5. Be responsible for its personnel and subcontractor’s compliance with all the requirements of the Safety plan and JHA.

6. Provide appropriate safety barricades, signs, and signal lights.

7. Comply with the standards issued by any local government authority having jurisdiction over occupational health and safety issues.

8. Ensure that any additional safety measures that the COR and/or POSHO determines to be reasonably necessary for this purpose are accomplished.

9. Specify in the Safety plan and JHA the requirements and mitigation steps regarding safety if the work involves:

a. Scaffolding.

b. Work at heights.

c. Trenching or other excavation.

d. Earthmoving equipment.

e. Temporary wiring, use of portable electric tools, or other recognized electrical hazards.

f. Work in confined spaces.

g. Use of hazardous materials – a material with a physical or health hazard

h. Operations that create any kind of contamination inside an occupied building such as dust from demolition activities, paints, solvents, etc.

i. Hazardous noise levels.

10. Comply with all the requirements included in the safety plan and the JHA, or any extra indications given by the POSHO and/or the COR.

The COR and/or the POSHO shall notify the CO and the contractor of any non-compliance with the safety requirements and the corrective actions required. This notice, when delivered to the contractor or the contractor’s representative on site, shall be deemed sufficient notice of the non-compliance and corrective action required. After receiving the notice, the contractor shall immediately take corrective action. If the contractor fails or refuses to promptly take corrective action, the COR may issue an order suspending all or part of the work until satisfactory corrective action has been taken. The contractor shall not be entitled to any equitable adjustment of the contract price or extension of the performance schedule on any suspension of a work order issued related to safety violations detected.

7. QUALITY ASSURANCE AND SURVEILLANCE PLAN (QASP)

This plan provides an effective method to promote satisfactory contractor performance. The QASP provides a method for the Contracting Officer's Representative (COR) to monitor Contractor performance, advise the Contractor of unsatisfactory performance, and notify the Contracting Officer of continued unsatisfactory performance. The Contractor, not the Government, is responsible for management and quality control to meet the terms of the contract. The role of the Government is to monitor quality to ensure that contract standards are achieved.

Services.

Performs all furnish and delivery services set forth in the scope of work.

Attachment A All required services are performed and no more than one (1) customer complaint is received per month.

7.1 Surveillance. The COR will receive and document all complaints from Government personnel regarding the services provided. If appropriate, the COR will send the complaints to the Contractor for corrective action.

7.2 Standard. The performance standard is that the Government receives no more than one (1) customer complaint per month. The COR shall notify the Contracting Officer of the complaints so that the Contracting Officer may take appropriate action to enforce the inspection clause (FAR 52.212.4, Contract Terms and Conditions - Commercial Products and Commercial Services (NOV 2023), if any of the services exceed the standard.

8. PERFORMANCE CRITERIA

8.1 Performance Objective

The objective of this Agreement is to provide, within the Term of this Contract, a professional level of service, which provides:

· US Embassy satisfaction in respect to the maintenance of water treatment systems and prompt reaction to any change in arrangements or operational requirements of the US Embassy;

· compliance with the statutory and regulatory provisions of the laws of the jurisdiction;

· best in class practices within the industry;

· risk reduction for the US Embassy;

· preservation of asset value; and

· reduction in operating costs.

The Service Contractor agrees that its performance under the Contract shall be measured against performance criteria specified in this document or otherwise agreed at the time of commencement.

8.2 Performance Benchmarks

The Service Contractor must for the duration of the contracted Services continue to maintain a quality control process, which has been agreed by the US Embassy and the Service Contractor.

The Service Contractor must allow the US Embassy access to the quality control system as well as the relevant quality systems of its subcontractors so as to enable monitoring and quality auditing of the maintenance service.

The US Embassy may reject any aspect of the Services that fails to comply with the requirements of the Contract, or its quality system, at any time.

8.3 Performance Monitoring and Reporting

The Service Contractor shall monitor its own performance against the criteria and benchmarks identified in this document, and shall provide reports when required by the US Embassy.

9. SPECIFICATIONS

9.1 All equipment, chemicals, and testing procedures and kits shall be approved by the COR prior to use in the service contract.

9.2 The Contractor will be responsible for submitting the manufacture specifications, SDS sheets and equipment cut sheets for all equipment, chemicals (including chemical composition), and testing procedures in both English and Spanish languages.

9.3 Potable Water Treatment System:

9.3.1 The potable water shall be maintained with the parameters specified in Attachment A Domestic (Potable) Water Treatment Systems Statement of Work.

10. MAINTENANCE SPECIFICATION DETAILS

10.1 Precedence of Specifications. If and to the extent that there is an inconsistency between this maintenance specification and any Manufacture’s maintenance specification, the Manufacture’s maintenance specification shall prevail.

10.2 Hours of Work. The Service Contractor shall schedule all preventive maintenance during normal working hour which are defined as 08:00 to 17:00 hrs., inclusive of periodic maintenance that may be required on Saturdays, with the exception of any regular or special public holidays on which the US Embassy Compound is not open, or as agreed with the US Embassy prior to commencement of the contract.

10.3 The water treatment Contractor shall provide both the required chemical products and necessary services to apply the chemicals, monitor their performance, and report the results. The water treatment service contract shall:

10.3.1 Preserve the interior waterside of current piping, potable water systems

10.3.2 Reduce operating costs and establish a cost-effective water treatment program to control water related problems such as corrosion, scaling, general deposits, and microbiological fouling

10.3.3 Ensure the proper operation of water treatment equipment.

10.4 The water treatment Contractor shall provide a “support service water treatment” contract. The support service water treatment contract shall involve joint responsibilities between the embassy facility management staff and the water treatment vendor.

10.5 The support service water treatment program shall consist of the U.S. Embassy Facility Management staff conducting routine (daily, weekly) water treatment tests of the potable water treatment systems and emailing the results to the water treatment Contractor on a weekly basis.

The Contractor will then be responsible for conducting a technical analysis of the weekly water treatment testing results from the embassy. The Contractor will then respond to the consulate within 24 hours to direct the consulate facility management staff to make any changes to the chemical dosages and/or equipment operations as necessary.

10.6 The water treatment Contractor shall visit the embassy on a bi-annual basis 2 times per year at regular consecutive intervals. The Contractor shall be responsible for all logistics including but not limited to transportation and hotel reservations for their staff.

10.7 The water treatment Contractor shall provide good chemicals and have a storage life expectance of at least 1 year.

10.8 The water treatment Contractor shall establish minimum and maximum control ranges for each treatment chemical and avoid unnecessary high levels of chemicals to mitigate cost and adverse chemical reactions from improper high level chemical dosage.

10.9 The water treatment Contractor shall perform the required services as described in the following SOW attachments, as applicable:

10.10 The water treatment Contractor shall provide 4 hours of familiarization annually in both English and Spanish to acquaint operators in the necessary water treatment tests, the control ranges for each treatment chemical, safe handling of equipment and chemicals, and new water treatment procedures/technologies.

10.11 The water treatment Contractor shall review the facility water treatment logs and the operating logs to verify the chemicals are within design parameters.

10.12 The water treatment Contractor shall discuss the water treatment conditions with the Facility Manager and operating engineers monthly and follow up with a written service report within seven business days after each visit. The report shall be in English and contain the results of water treatment Contractor’s on-site and laboratory tests, comment on the status of each system, and specific recommendations for action if necessary.

10.13 Procedures.

11 TRANSITIONS/CONTACTS

Within 30 days after contract award, the Contracting Officer may ask the contractor to develop a plan for preparing the contractor to assume all responsibilities for preventive maintenance services. The plan shall establish the projected period for completion of all clearances of contractor personnel, and the projected start date for performance of all services required under this contract. The plan shall assign priority to the selection of all supervisors to be used under the contract.

11.1 On site contact. The following are the designated contact personnel between the U.S. Embassy and the Contractor:

COR : Julian Verdugo – VerdugoJ@state.gov

The Contracting Officer Representative ( COR) will be the contractor’s point of contact at the U.S. Embassy, Mexico City - Julian Verdugo. All questions concerning coordination of service activities while at post shall be directed to the COR.

12 ACCESS TO GOVERNMENT BUILDINGS AND STANDARDS OF CONDUCT

12.1 The Contractor shall designate a representative who shall supervise the Contractor’s technicians and be the Contractor's liaison with the U.S. Embassy Mexico City. The Contractor's employees shall be on-site only for contractual duties and not for any other business or purposes. Contractor employees shall have access to the systems dedicated rooms with or without security escorts, only with specific permission by the Facility Manager, Contracting Officer, or the COR.

12.2 Personnel Security: The US Embassy reserves the right to deny access to U.S owned and U.S.-operated facilities to any individual. The Contractor shall provide the names, biographic data and police clearance on all Contractor personnel, who shall be used on this contract prior to their utilization on this contract.

12.3 Standards of Conduct.

12.3.1 General: The Contractor shall maintain satisfactory standards of employee competency, conduct, cleanliness, appearance, and integrity and shall be responsible for taking such disciplinary action with respect to employees as necessary. Each Contractor employee shall adhere to standards of conduct that reflect credit on themselves, their employer, and the United States Government. The US Consulate reserves the right to direct the Contractor to remove an employee from the worksite for failure to comply with the standards of conduct. The Contractor shall immediately replace such an employee to maintain continuity of services at no additional cost to the Government.

12.3.2 Uniforms and Personal Equipment. The Contractor's employees shall wear clean, neat and complete uniforms when on duty. The Contractor shall provide, to each employee and supervisor, uniforms and personal equipment. The Contractor shall be responsible for the cost of purchasing, cleaning, pressing, and repair of the uniforms.

12.3.3 Neglect of Duties. Neglect of duties shall not be condoned. This includes sleeping while on duty, unreasonable delays or failures to carry out assigned tasks, conducting personal affairs during duty hours and refusing to render assistance or cooperate in upholding the integrity of the worksite security.

12.3.4 Intoxicants and Narcotics. The Contractor shall not allow its employees while on duty to possess, sell, consume, or be under the influence of intoxicants, drugs or substances which produce similar effects.

12.4 The FAC Section has a requirement to obtain water treatment maintenance services to execute this work, including logistics, customs, shipping, transportation, labor, water treatment chemicals, tools, water treatment testing kits/equipment, administrative and all associated management support functions. The water treatment service contract will include but not limited to combinations of physical methods, chemical methods, equipment servicing and testing to control water-related problems such as corrosion, scaling, general deposits, and microbiological fouling of the potable water systems. All work shall comply with the requirements described in the following, as a minimum:

· NSF/ANSI Standards (NSF International and American National Standards Institute)

· AWWA Standards (American Water Works Association)

· SDS (Safety Data Sheet) Regulations

· ASTM International D Standards

· NFPA (National Fire Protection Association) Codes and Standards

· UL (Underwriters Laboratories) Standards

· IEEE (Institute of Electrical and Electronics Engineers) Standards

· NEMA (National Electrical Manufacturer Association) Standards

· OSHA (Occupational Safety and Health Administration) Standards

· And all applicable manufacturer installation, operations and maintenance (O&M) instructions/requirements

· All U.S. Dept. of State, Safety Health and Environmental Management (SHEM) requirements

13 OBJECTIVES

13.1 The purpose of this scope of work is to define the requirements for the planning, procurement, and maintenance of the potable water systems located at the Embassy Compound. The intent of this service contract is to preserve the current piping, potable water systems, and sprinkler piping/equipment, and establish a cost effective water treatment program to control water related problems such as corrosion, scaling, general deposits, and microbiological fouling and meet water treatment goals. All work shall be executed in accordance with the project SOW, approved water treatment chemicals, associated contract documents and be compliant with all applicable safety, equipment and building codes and standards.

14 GENERAL REQUIREMENTS

14.1 The technician/s shall sign off on every task specified in the Statement of Work and will provide a typewritten copy of their report to the COR or the COR's designate within five business days of each maintenance visit.

15 SUBCONTRACTING LIMITATION AND NOTIFICATION REQUIREMENT:

The contractor shall not subcontract more than ten percent (10%) of the total value of maintenance services under this contract without prior written approval from the COR. If subcontracted labor exceeds this threshold, the contractor must provide a list of all subcontractors engaged, including primary points of contact for each, within five (5) business days of the Notice to Proceed. The contractor shall promptly notify the COR in writing of any changes to the list of subcontractors, including additions, removals, or changes in contact information. If subcontracted labor does not exceed ten percent (10%), the contractor shall submit a written memorandum to the COR within five (5) business days of the Notice to Proceed, confirming that subcontracted labor does not exceed the ten percent (10%) threshold.

16 Personnel Stability, Suitability, and Access Authorization

Personnel to enter the embassy premises to develop the technical tasks described in the Attachment A of this document, shall be dedicated, fixed key personnel for the duration of the period of performance. The Contractor shall not replace or rotate these assigned personnel without the prior written approval of the Government, except in cases of resignation, termination for cause, illness, or other circumstances beyond the Contractor’s control.

The Government may require Contractor personnel described above, to provide personal and employment information necessary to verify compliance with U.S. Embassy policies, security requirements, and access procedures. The Contractor shall ensure all personnel fully comply with Embassy security rules, badging requirements, and site conduct policies.

The Government reserves the right to deny, revoke, or limit access to any Contractor employee for security or suitability reasons, or for failure to comply with Embassy requirements. If access is denied or revoked, the Contractor shall promptly replace the individual with personnel acceptable to the Government who meet both (1) the technical qualifications required by the SOW and (2) all Embassy security and access requirements, at no additional cost to the Government.

ATTACHMENT A

Statement of Work Domestic (Potable) Water Treatment System

I. GENERAL INFORMATION:

The requires professional services and contractor cost proposals to perform preventive maintenance services of the facility’s Potable Water Treatment System.

II. PROJECT REQUIREMENTS:

Description: U.S. Embassy Mexico City

Volume: Domestic Water :1,138,005 litters Raw Water Tanks: 2,000,000 litters

Main Equipment: Potable Water Skid System

DESCRIPTION OF EQUIPMENT *:

Potable Water Treatment System

The following is a sequence description which covers the step by step treatment process and the role each skid plays in the treatment scheme. The treatment system is designed to treat the local municipal water supply and store it as potable water. The quality of the potable water is constantly monitored and maintained using the steps described below. The ultrafiltration system described below is capable of producing 50 gallons per minute with an overall treatment system flow rate of 40 gallons per minute or 151.4 liters per minute as required per drawing PKG P5.13. Due to the redundancy built into the system, production of treated water can continue during ultrafilter and carbon filter backwash. The ultrafiltration units and carbon filters will typically require approximately 4,540 gallons per day for backwashing, which will allow the system to run at an overall efficiency of 92%. Backwash frequency and duration may need to be adjusted based on feed water quality.

Initial Raw Water Treatment

The incoming water from the municipal supply will first pass through automatic valves installed on the main line feeding the raw water storage tanks. These valves will open or close based on the water level in their respective storage tank although the outlets of the storage tanks should be cross-tied so that the levels are the same in both tanks.

1. Primary Water Treatment A water analysis of the municipal water supply dated 15 January 2019 was obtained from the site and provided to Water Professionals. There were no contaminants found in the water analysis that exceeded the EPA Primary or Secondary Drinking Water Standards. The only item that may need to be addressed is the pH. The value reported for pH was 8.06 and, while this is within the limits set by the EPA (6.5-8.5), a pH value greater than 7.50 can present problems with the disinfection process. Free chlorine is used as a disinfection agent in the treatment system provided. At pH levels from 4-7.5, free chlorine exists as hypochlorous acid and at pH levels greater than 7.50, hypochlorous acid is converted to the hypochlorite ion, which is much less effective as a disinfecting agent. In order to maintain free chlorine in the hypochlorous acid form, acid may need to be injected into the raw water storage tank to maintain a pH < 7.5. The chlorination skid will have the controls capability to inject acid into the raw water storage tank, but since pH can be difficult to measure properly from a grab sample, the need for acid injection will have to be determined on site during startup. The treatment system described below is designed to properly treat the water supply described by the water analysis provided. Treatment system components include ultrafiltration, carbon filtration, cartridge filtration and chlorination.

Ultrafiltration Units

Water from the raw water storage tanks will supply the ultrafiltration skids. The water supply to the individual feed tank on each skid is controlled by a pneumatic valve located on each of the ultrafiltration skids. The ultrafiltration skid is a membrane filtration system for the removal of suspended solids from water. Each skid, rated to produce a minimum of 50 gpm, is equipped with ultrafiltration membranes with a nominal pore size of 0.04 micron. They are each designed to remove 100% of suspended solids greater than 0.2 micron, and at least 99.95% of microorganisms or pathogens. The permeate water shall be less than 0.1 NTU, and the system will achieve at least 90% recovery. A feed pump utilizing a VFD will push water through the UF membranes, and the permeate water will continue to both the CIP tank located on the UF skid and the filtrate tank. A flow transmitter will be used to report the permeate flow to the UF PLC, and the VFD will increase or decrease pressure as necessary to drive the water through the UF membranes at a constant flow rate of 50 gpm. Chlorine is injected at 0.4 ppm in front of the UF membranes to prevent biological growth. Additional chlorine will be used during membrane backwash. The CIP tank will use an upper level float switch to fill as needed in order to provide backflush water to the UF skid. A separate pump, mounted on the UF skid, is used for backflushing the membranes. The backflushing sequence includes an air scour to ensure proper cleaning of the membranes. The UF systems also have the capability for membrane integrity testing using compressed air.

Filtrate Tank

Product water or permeate from the ultrafiltration skid is directed to the filtrate tank. Water from this tank is used to feed the rest of the water treatment system.

Carbon Filter Pump Skid

Water leaving the filtrate tank is directed into the carbon filter pump skid. These pumps are sized for 40 gallons per minute at 60 psi each and are called to run when the level in the potable water storage tanks drops below the fill setpoint.

Only one pump will be used at any given time to supply the carbon filter skid and the pumps will alternate operation every time the system is called to run. Pumps can either be controlled manually at the pump skid control panel or automatically by the chlorination skid control panel. When used in Auto, the chlorination skid. Water storage tanks drop below the fill setpoint and when there is sufficient water in the filtrate tank to supply the pumps. A bladder tank is provided on the skid to prevent pump chattering.

Carbon Filter Skid Water leaving the carbon filter pump skid is first treated by the carbon filter skid. The water is de-chlorinated and organic contaminants are removed from the water to control TTHM/DBP levels. The carbon filters will also remove dissolved gasses and odors from the water. The carbon filter skid consists of two 42” diameter filter vessels, each containing 24 cubic feet of carbon. Each carbon filter will automatically backwash at a rate of 95 gallons per minute (360 LPM) for 15 minutes every 1-2 days, or at a frequency determined by site conditions. The backwash supply water will be provided by the domestic water booster pump skid. The carbon filter skid will operate in a duplex, parallel fashion so that both vessels will be in continuous service, however each carbon filter is capable of meeting the total flow requirements alone, to give 100% redundancy to the system. Each carbon filter will have pressure gauges and sample ports to monitor the water on each side of the filter.

Cartridge Filter Skid Water leaving the carbon filters is then treated by the Cartridge Filter Skid. This skid consists of three cartridge filter housings arranged for parallel operation. The cartridge filters provided are rated at 1.0 micron absolute. This will provide a filtration barrier for bacterium in the water. Each housing will have individual isolation valves so that the other two housings may remain online during filter changes. A drain from each housing will be used for flushing during sanitization.

Each filter is designed to maintain at least 25 gpm of flow, though all filter housings should be left online to prevent stagnation and potential bacteria growth. After cartridge filtration, the water will proceed into the potable water storage tanks.

Distribution Pumps – by others

A domestic water booster pump skid provided by others consisting of three pumps is used to move potable water from the storage tanks to the distribution points. The pump system is designed to maintain a constant pressure in the line with VFD control. If the pressure drops due to water usage in the distribution system, the first pump will automatically start. If the first pump cannot maintain pressure after 20 seconds, the second pump will start, followed by the third if necessary, and continue running until the system has reached full pressure for 20 seconds, at which time the first pump will spool down, followed by the second and/or third as long as pressure is maintained. The pumps are designed and sized to maintain the maximum facility usage with only two pumps in operation for system redundancy. The pumps should automatically lead/lag, with the lead pump alternating on a 7 day cycle. The pressure set point should be field adjustable. A pressure transmitter ensures that there is discharge pressure from the pumps, preventing them from running dry.

Hydropneumatic Tank

A free-standing hydropneumatic tank is to be installed on the discharge of the potable water booster pump skid. This tank is supplied to maintain an even pressure on the potable water supply line and to prevent chattering on the domestic water pumps.

System Control

The system utilizes a touch-screen HMI with a PLC-based control system. Tank levels, chlorine, and pH values are displayed on the main screen. Pump status is displayed as well. A system alarm screen will indicate and record system alarms and contacts are provided to interface with the BAS system via MODBUS. Submersible pressure transducers in the storage tanks send a continuous level signal to the Control Panel on the Chlorination Skid. The Control Panel will display the level of each storage tank, as a percentage of tank volume. When the raw water tank levels drop to 88%, the automatic valves on the supply line to those tanks will open and water will continue to flow until the tank levels reach 95%, at which time the automatic valves will close. When the level in the filtrate tank drops to 80%, the ultrafiltration skid will be called to run and will continue to operate until the level in the filtrate tank reaches 91%, at which time the ultrafiltration skid will turn off. When the levels in the potable water storage tanks drop to 88%, the automatic valves on the supply lines to the potable water storage tanks will open, the carbon filter feed pumps will be called to run and will continue to operate until the level in the potable water storage tanks reach 91%, at which time the carbon filter feed pumps will turn off and the automatic valves will close. If a storage tanks reaches a level above 98%, or below 60%, the system will go into general alarm. This alarm signal is tied to the BAS system, indicating a problem in the water treatment room. If the water levels in the raw water storage tanks fall below 30%, the recirculation pumps are disabled. If the filtrate tank level drops below 30%, the carbon filter pumps are disabled. If the water levels in the potable water storage tanks drop below 30%, the potable water recirculation pumps are disabled. All level set points are field adjustable. During cleaning or maintenance, any storage tank may be turned off at the control panel, disabling the level control signals for that tank. A manual valve can be closed to prevent water from entering either storage tank.

Water Quality Maintenance

Water from both the raw and potable water storage tanks is constantly recirculated through the chlorination skid. The circulation system, which runs constantly, is piped through separate circulation lines utilizing the circulation pumps. Contacts are provided to interrupt each circulation pump motor starter to prevent operation in the event water levels fall below a specified level. The circulation lines will aid to keep the storage tanks mixed and prevent stagnation, as well as provide a water stream to continuously sample and monitor. The chlorine levels in the raw and potable water storage tanks are automatically monitored and controlled through their respective circulation lines. When the chlorine level drops below the set point, the chlorine pump for that line will automatically start and run until the set point is again reached. The raw water storage tanks are set to maintain 1.0 ppm of chlorine, and the potable water storage tanks are set to maintain 0.80 ppm of chlorine. The chlorine system required CT is 27 min-mg/L at 10 degree C and pH 6-9. The chlorine set points are field adjustable and may be changed to meet the required chlorine levels at the farthest point of distribution. The system will alarm if the chlorine levels drop below 0.70 or above 1.20 in the raw water storage tanks, and 0.50 and 1.00 in the potable water storage tanks. The chlorination system is disabled if the water level in the respective storage tank falls below the alarm set point to prevent the circulation pumps from running dry. As previously stated, the chlorination skid also has the capability of adjusting the pH in the raw water storage tanks using acid (or caustic) injection if necessary.

I. System Architecture

1. Pumps

2. Chemical solution tanks

3. Chemical mixers

4. Process monitoring equipment

5. Control equipment and devices

6. Testing and monitoring equipment.

7. Filters media

8. Chemical feeders

9. Water Testing Kits

Note: See equipment table and systems drawings for reference

II. GENERAL REQUIREMENTS:

The Contractor under this SOW will be responsible for labor, tools, and materials required to carry out all preventive maintenance as outlined in this SOW. Embassy staff should have service manuals for all equipment included in this SOW. If they do not, the Contractor will assist Embassy Staff in obtaining the manuals and ensure they have been received.

This Statement of Work (SOW) describes the preventive maintenance and testing services and deliverables to be performed by the Contractor at the US Embassy Mexico City, Mexico.

The assigned Contracting Officer and Contracting Officer's Representative are the sole points of contact for all technical and contractual discussions or issues regarding the scope of work and its intent and execution. The Contractor shall take no direction verbal or otherwise from United States Government (USG) personnel other than the Contracting Officer or Contract Officer's Representative.

This Statement of Work requires the Contractor to provide site assessment and survey services, project management, professional water treatment services, water treatment logistics and material procurement services, preventive maintenance and testing services, cost estimating and scheduling services, and general support services for this water treatment maintenance contract.

The Contractor’s proposed and USG accepted maintenance contract cost proposal and maintenance schedule, including completion dates shall be incorporated into the task order. Additionally, the task order shall be a firm fixed price task order.

This statement of work and applicable deliverables and documents as developed by the Contractor and accepted by the USG shall serve as the basis for describing and delineating the scope of the required services and work limits for service contract to be furnished and executed by the Contractor.

All deliverables, documents, proposals, etc. submitted by the Contractor under this statement of work shall remain the property of the U.S. Government. All U.S. Government documents and data provided to the Contractor shall remain the property of the U.S. Government. The Contractor shall limit duplication and dissemination of all U.S. Government documents and Contractor developed documents under this statement of work to/within the Contractor’s execution team. Duplication or distribution of project documents outside the Contractor’s team is strictly prohibited without the express written approval and authorization of the contracting officer.

Upon completion of each service visit all documents, electronic media, photos, etc. shall be submitted to the Government, including all documents and data the Government provided to the Contractor. All service contract documents and media shall be submitted to the Government along with the Contractor’s service report.

The technician shall sign off on every task specified in the Statement of Work and will provide a typewritten copy of their report to the COR or the COR's designate within five business days of each maintenance visit.

The Contractor shall schedule, coordinate and arrange all work so as to cause the least interference with the normal occurrence of post operations. In those cases where some interference is unavoidable, the Contractor shall make every effort to minimize the impact of the interference and its effects on the occupants or users. All detailed work schedules required by this statement of work shall be electronically documented and updated and made available to the Contracting Officer's Representative (COR) upon request, oral or written. If the COR determines that the Contractor’s schedule conflicts with critical post operations, the Contractor shall modify the schedule as required.

The Contractor shall ensure that all Embassy/Post facilities, equipment and systems recommended for and maintained or installed by the Contractor are done so with the highest quality and cost effective materials, finishes, fixtures, equipment and system that provide for sustained operational reliability, dependability and durability. The Contractor shall assure that the equipment/water treatment chemicals furnished and installed are maintainable and equipment/parts can be readily replaced with locally available supplies and services as practical, taking into consideration local economy and resources. The Contractor shall utilize reliability-centered maintenance (RCM) principles and methodologies during and for all project activities and tasks. Uniformity of parts and components shall be taken into consideration to maximize part interchangeability with other existing Post systems. Except as otherwise directed by the contracting officer all parts, materials, components, equipment, systems, etc. furnished by the Contractor shall be new – not used or manufactured by third party entities. Except as otherwise directed by the contracting officer, all replacement or warranty parts shall be new and equal to or better than manufacturer recommended replacements.

The Contractor will not use any method or substances which may cause damage to the equipment or systems. Any damage or loss through negligence and/or maintenance practices by the Contractor, Sub-contractor, or Contractor's staff shall be the entirely the responsibility of the Contractor. The U.S. Embassy, Mexico City will require the Contractor to repair/replace any damaged systems or pay for the cost of rectification.

The Contractor must, for the duration of the contracted Services, continue to maintain a quality control process which has been agreed to by the U.S. Embassy Mexico City COR and the Contractor.

III. SCOPE OF WORK - PREVENTIVE MAINTENANCE

Contractor shall provide all materials, supervision, labor, tools and equipment to perform preventive maintenance. All personnel working in the vicinity shall wear and /or use safety protection while all work is performed. Any questions or injuries shall be brought to the attention of the Post Occupation Safety and Health Officer (POSHO). Safety Data Sheets (SDS) shall be provided by the Contractor for all HAZMAT materials. Copies will be provided to the COR for approval.

At a minimum, the following work must be done (if apply):

Monthly:

The Service program shall consist of the embassy facility management staff conducting routine (daily/weekly) operator testing of the potable water treatment systems and monthly e-mailing the results to the service contractor, with copy to OBO/FAC (water_testing_group@state.gov). The Contractor will then be responsible for conducting a technical analysis of the routine potable water treatment testing results from the embassy. The Contractor will then respond to the consulate within 24 hours to direct the embassy facility management staff to make any changes to the treatment plant operations to reestablish effective and efficient potable water treatment to meet water quality standards.

Potable Water Treatment System

i. Maintenance Description:

1. Check and record pressures and chemical levels.

2. Replace chemical dosing detection probes

ii. Safety and Special Handling Description:

1. Chemicals must comply with the Environmental Protection Agency (EPA) regulations, ANSI/NSF Standard 60 Certification and be handled in accordance with occupational safety requirements. Employ personal protection against corrosive or hazardous treatment chemicals as appropriate.

2. Be familiar with the Safety Data Sheets of any chemicals used in the water treatment program

3. Assure that post water treatment specialists understand the proper operation and maintenance of the equipment and correct any deficiencies found with on-site personnel’s familiarizations with equipment.

4. Water treatment must be based on proven standard engineering practices and Post specific water treatment goals.

5. Follow treatment as directed by manufacturer.

6. Maintenance includes chemicals, chemical…