Attachment 2 SOW Mechanical System Closed Loop Maintenance Process Cooling Tower.pdf

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Nellis AFB Mechanical System Closed Loop Maintenance Process (Cooling Tower)
Solicitation number
FA930225Q0061
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This Statement of Work (SOW) details a non-personnel services contract for mechanical system closed loop maintenance process for cooling towers at Nellis Air Force Base, Nevada. The 445th Test Squadron is seeking a 5-year contract (1 base year with 4 option years) for water treatment maintenance of Cooling Towers C030 and C031, located in Building 1733 at the Digital Test & Training Range Operating Location.

Key service requirements include providing specific chemical treatments such as cooling tower scale inhibitor, non-oxidizing biocide, galvanized steel conditioning compound, and closed loop corrosion inhibitor. The contractor must perform monthly on-site water testing, maintain and repair chemical delivery systems, change filter elements monthly, provide hands-free chemical delivery, and offer web-based water treatment training for HVAC staff. Contractors must hold EPA and hazardous chemical licenses, employ US citizens with REAL ID access, and comply with base security regulations. Comprehensive testing schedules for makeup water, cooling towers, and closed loops are specified, with monthly reporting requirements to the contract and project managers.

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STATEMENT OF WORK (SOW)

FOR

MECHANICAL SYSTEM CLOSED LOOP

MAINTENANCE PROCESS (COOLING TOWERS)

AT

Nellis AFB, Nevada

Prepared by:

Christina Calkins, Acquisition Project Specialist 445th TS/EWJ 21 May 2025 5 June 2025 C&A Updates

OVERVIEW

GOVERNMENT FUNISHED PROPERTY, EQUIPMENT, AND SERVICES

GENERAL INFORMATION

SECURITY REQUIREMENTS

APPENDIX-DEFINITIONS

ACRONYMS

OVERVIEW

1.0 DESCRIPTION OF SERVICES

1.1 General Scope. This is a non-personnel services contract to provide mechanical system closed loop maintenance process for cooling towers, Building 1733, Nellis Air Force Base, Nevada. The Government shall not exercise any supervision or control over the contract service providers performing the services herein. Such contract service providers shall be accountable solely to the Contractor who, in turn is responsible to the Government.

1.1.1 Overview Description of Services/Introduction. The Contractor shall provide all management, personnel, equipment, supplies, facilities, transportation, tools, materials, supervision, and other items and non-personal services necessary to provide the mechanical system closed loop maintenance process for cooling towers as defined in this Statement of Work, except for those items specified as Government furnished property and services. The Contractor shall perform to the standards in this contract. This includes the planning, coordination, and surveillance of the activities necessary to ensure disciplined work performance and timely resources application to accomplish all tasks under the contract. The Contractor shall be responsible for maintaining communication with the Contracting Officer (CO) and the government customer, and to immediately notify both the CO and the customer of any problems that would prevent timely performance of this contract. The Contractor is responsible for and required to implement, and maintain management control systems necessary to plan, organize, direct, and control all activities under this contract.

1.1.2 Specific Requirement. The 445 TS/EWJ OL-N is requesting a 5-year option contract for annual mechanical system closed loop maintenance process for cooling towers at Digital Test & Training Range, Operating Location Nellis (DTTR OL-N) 4091 Kinely Ave, Bldg. 1733, Nellis Air Force Base, NV 89191. Water Treatment Maintenance provided for Cooling Towers C030 and C031, to include but not limited to the following:

a. Provide those products listed below during the scope of the Period of Performance

i. Cooling Tower Scale Inhibitor ~ (po4 range 1.9 – 3.8ppm, 100 – 200 ppb PTSA)

ii. Cooling Tower Non-Oxidizing Biocide ~ (100ppm per dose)

iii. Cortec S-69P Cooling Tower Galvanized Steel Conditioning Compound (.25 - .50 moly)

iv. Closed Loop Corrosion Inhibitor ~ Nitrite Based Corrosion Inhibitor

b. Maintain, adjust, and repair chemical delivery system

c. Provide on-site water testing on cooling tower systems, closed loops, and provide a written report with results to the central plant manager within 14 working days.

d. Provide hands-free delivery and transfer of water treatment chemicals

e. Change filter elements in closed loop filter units monthly

f. Provide on-site and web-based modules for water treatment training for HVAC staff

g. Equipment/Facilities Covered in this Scope of Work

i. Central Plant Cooling Towers and Closed Loop Systems: Chilled, Heating and Building

h. Testing Schedule

i. Make Up Water

1. Conductivity

2. Calcium hardness

3. Total Alkalinity

4. pH

ii. Cooling Towers

1. Conductivity/TDS

2. Calcium hardness

3. Total Alkalinity

4. pH

5. Inhibitor Levels

6. Cycles of Concentration

iii. Closed Loops

1. Conductivity

2. pH

3. Nitrite Corrosion Inhibitor

4. Iron

i. Per Clark County permit Part 70 Operating permit, a written monthly report containing Total Dissolved Solids (TDS) and monthly activities shall be completed to Contract Manager, Christina Calkins christina.calkins.1@us.af.mil and Project Manager, Stacey Heavner stacey.heavner.2@us.af.mil

1.2 Inherently Governmental Function. The Contractor shall not perform Inherently Governmental functions as defined in FAR Subpart 7.5 in relationship to this SOW.

1.3 Period of Performance 12 months with up to four (4) Option years

1.4 Place of Performance. The contractor shall perform the services in the Statement of Work at Building 1733 Nellis Air Force Base, Nevada.

1.5 Minimum Qualifications.

1.5.1 Contractors shall hold an EPA license and Hazardous Chemical license for handling and applying chemicals to treat the water per regulations of TSCA (Toxic Substance Control Act) and EPA.

1.5.2 Personnel providing the monthly service shall be a US Citizen with a REAL ID required for access to Nellis AFB, NV.

The contractor shall notify the Project Manager, Ms. Stacey Heavner (702) 652-3181, five (5) working days prior to the expected service date.

The contractor shall provide a completed Site-Support Visit Request, with the following information for all personnel that are required to complete the installation on-site no later than four (4) days prior to the agreed upon installation date:

1. Name(s)

2. Company Name or Organization

3. Social Security Number (SSN)

4. Driver’s License No./State

5. Date and place of birth

6. US citizenship (declare Yes or No)

7. Date(s) of Visit and Length of visit (provide approximate dates)

8. Purpose of visit: Contractor Visit, Job Walk, etc

9. Length of visit (provide approximate dates)

Point of Contact and phone number: Nellis AFB – Casey Hill 702-427-0169

The contractor shall provide, if requested, verification that all required vehicles have valid registration and insurance documentation, which may be checked prior to entering the work site or the base.

GOVERNMENT FUNISHED

PROPERTY, EQUIPMENT, AND

SERVICES

2.0 GOVERNMENT FURNISHED PROPERTY, EQUIPMENT, AND SERVICES

2.1 Government Furnished Services. The Government will provide the following (as required)

2.1.1 The Air Force Test Center (AFTC) will provide access to secure areas within 445 TS EWJ OL-N Compound.

2.1.2 Emergency Medical Services. The Mike O’Callaghan Federal Medical Center (MOFMC) will provide emergency medical treatment to employees of the Contractor for injuries incurred while working at Nellis AFB, NV. The Contractor will be required to reimburse the Government at an established rate for non-beneficiaries in accordance with DHA Procedures Manual 6015.01 https://www.health.mil/Reference-Center/DHA- Publications/2017/10/24/DHA-PM-6015-01. After receiving initial emergency treatment, the Contractor will provide the hospital with the name of a physician and/or hospital to which injured personnel can be transferred for further treatment and care. Follow-on care after initial emergency treatment will not be provided. There are very limited medical services available at Creech AFB and on the Nellis Test & Training Range (NTTR).

2.1.3 Security Police and Fire Protection. Phone number for Nellis AFB Security Forces Squadron 702-652-4311 Emergencies (Fire/Security Forces/Medical), 911.

2.1.4 Utilities. The Government will provide all electricity, water and sewage at no additional cost to the Contractor. The Contractor shall instruct employees in utilities conservation practices. The Contractor shall be responsible for operating under conditions that preclude the waste of utilities, which include turning off the water faucets or valves after using the required amount to accomplish requirements under this SOW.

GENERAL INFORMATION

3.0 GENERAL INFORMATION

3.1. Hours of Operation. The services required under this contract will primarily be completed between the following hours: 7:30AM – 4:30PM, Monday thru Friday except Federal holidays or when the Government facility is closed due to local or national emergencies, administrative closings, or similar Government directed facility closings. Any additional work requiring an extended duty day or weekend shift shall be coordinated through the government for approval no later than 24 hours in advance. For other than firm fixed price contracts, the Contractor will not be reimbursed when the Government facility is closed for the above reasons. On occasion, the contractor will be required to work on weekends and Federal Holidays. These instances will be worked out in advance between the Government and the Contractor. The Contractor must always maintain an adequate workforce for the uninterrupted performance of all tasks defined within this SOW when the Government facility is not closed for the above reasons.

3.1.1 Recognized Holidays. Contractor is not required/permitted to perform services on the following holidays.

*If the holiday falls on a Saturday, it will be observed on the preceding Friday. If the holiday falls on Sunday, it will be observed on the following Monday.

3.1.2 Work Schedules, Leave, and Absences. The contractor shall provide the government with a performance schedule for the project. Any changes in the schedule shall be coordinated with the government in advance.

3.2. Contract Personnel

3.2.1 Alcohol/Drug Use. The consumption of alcoholic beverages or illegal drugs by Contractor personnel, while on duty, is strictly forbidden. The Contractor shall immediately remove any employee who is under the influence of alcohol or drugs.

3.2.2 Appearance. Contractor personnel shall present a neat appearance. Contractor’s uniform must be easily recognized. This shall be accomplished by wearing distinctive clothing bearing the name of the company and by wearing badges that contain the company name and employee name.

3.2.3 Certifications. Contractor employees shall have current and valid professional certifications and licenses required to perform the work in this SOW, prior to contract award. All certification and licensing requirements by Federal, State, and local agencies shall be complied with at the Contractor's expense.

3.2.4 Contractor Qualifications. The Contractor shall utilize employees possessing adequate training, skills, and knowledge to perform the requirements of this contract.

3.2.5 AFI 31-218 2-4 (b) Driving privileges are subject to revocation when an individual fails to comply with any of the conditions requisite to the granting privilege (see para 2–1). Revocation of installation driving and registration privileges is authorized for military personnel, family members, DOD civilian employees, contractors, and other individuals with installation driving privileges. For civilian guests, revocation is authorized only with respect to incidents occurring on the installation or in the areas subject to military traffic supervision.

3.3 Safety.

It is the contractor's responsibility to ensure its employees and managers have a comprehensive understanding of and full compliance with OSHA requirements. Detailed information is available on the OSHA website at http://www.osha.gov. It is the contractor's sole responsibility for compliance with OSHA, Public Law 91-596.

The contractor shall comply with all federal, state and local laws, and Air Force Instructions for the protection of their employees while working on an Air Force Installation or property. The protection of contractor

New Year’s Day Labor Day Martin Luther King Jr’s Birthday Day Columbus Day President’s Day Veterans Day Memorial Day Thanksgiving Day Independence Day Christmas Day Juneteenth NA employees is exclusively the obligation of the contractor. Contractors shall manage all work areas to ensure the safety of building occupants, base personnel, or visitors in or near the areas. The contractor must ensure that personnel are properly trained on the equipment they are tasked to operate. The contractor shall develop site specific mishap reporting procedures which result in damage to government property or injury to Air Force personnel. These procedures are to be included in the safety and health plan for review. In accordance with AFI 91-202, Safety Office. IAW DAFI 91-204, Safety Investigation and Hazard Reporting. Direct costs related to the mishap shall be separated from other cost and provided to the GPO and Safety Investigators. The Contractor is responsible for establishing requirements for all subcontractors who qualify as subcontractors under the resulting contract. Safety personnel will: Review contractor Safety plans to ensure materials used or operations conducted do not endanger public safety and government personnel or property.

The contractor shall perform work in a safe manner as required by OSHA Safety and Health Requirements.

Provide a verbal report to the CO as soon as possible of each occurrence of damage to Government property or an accident resulting in death, injury, occupational disease, or adverse environmental impact. Provide a completed copy of the required Accident Investigation Reports to the CO within five calendar days of each occurrence.

The Contractor’s plan shall include appropriate measures to ensure the Contractor reacts promptly to investigate, correct and track alleged safety & health violations and/or uncontrolled hazards in contractor work areas.

The plan shall:

a. Demonstrate a management commitment to employee safety and health.

b. Identify the application of the safety and health plan to subcontractors.

c. Identify the roles and responsibilities of the following individuals: Management Supervisors Employees Safety Coordinator

d. Identify applicable safety rules and regulations

e. Include a worksite hazard analysis to include base-line hazard identification and required control measures

f. Include a job site analysis to include hazards of tasks required to control measures

g. Identify employee safety and health training requirements and the documentation process

h. Include a workplace inspection frequency, to include identifying the individual conducting the inspections

i. Include employee hazard reporting procedures

j. Identify individual(s) responsible for corrective action hazards

k. Identify first aid/injury procedures

l. Identify procedures for accident investigation and reporting

m. Identify emergency response procedures; and

n. Identify the process for tracking controlled hazards in contractor work areas

3.3.1. Safety Equipment. The Contractor shall furnish personal safety equipment for its employees in performance of this contract. Safety equipment includes shoes or boots, eyewear, respirators, and gloves, etc.

3.3.2. Safety Threats. The Contractor shall not employ persons for work on this contract if such employees are identified to the Contractor by the CO as a potential threat to the health, safety, security, general well-being or operational mission of the installation and its population.

3.4. Conservation of Utilities. The Contractor shall instruct employees in utilities conservation practices. The Contractor shall be responsible for operating under conditions that preclude the waste of utilities.

3.5. Contractor Furnished Property and Services. Except for those items or services specifically stated to be Government-furnished in Section 2.0 and any appendixes, the Contractor shall furnish everything required to perform this contract in accordance with all its terms.

3.6 Environmental Protection. The Contractor shall comply with all applicable Federal, state, and local laws, regulations, and standards, including Air Force and installation policies, directives and instructions, that are or may become applicable to the Contractor’s activities in performance of this contract.

3.7 Audit. This contract may be subject to audit by any and all cognizant Government agencies. The Contractor shall make available all records, which it maintains with respect to this contract, to such agencies.

3.8 Miscellaneous Paragraphs

3.8.1 Official Correspondence. The Government singularly identifies each project with a contract number at the time of the award. The contract number is a unique identifier to purposely and permanently represent an awarded project. The Government issued contract number is to be referenced in all official communication starting upon notice of the award.

3.8.2 Post Award Conference. The Contractor agrees to attend any post award conference convened by the Contracting Officer IAW FAR Part 42.5. These meetings shall be at no additional cost to the Government.

3.8.3 Records. All records created and received by the Contractor in the performance of this contract shall be maintained and readily accessible. Records shall remain the property of the Government.

3.8.4 Insurance. The contractor shall obtain the necessary insurance as required by FAR part

28.3. The minimum amounts of insurance will be maintained IAW FAR 28.307-2.

3.8.5 Fire Prevention. The Contractor shall take all necessary precautions to prevent fires in the units and Contractor-furnished and Government-furnished facilities while performing any work under this contract. In the event fires do occur, the Contractor shall immediately notify the Base Fire Department at 911. The Contractor shall then notify the requiring activity and the CO. The Contractor shall brief and document its employees monthly in fire safety issues and procedures in reporting fires.

3.8.6 Inclement Weather. If the base closes due to inclement weather, the Contractor will be released, by the installation commander, with the general population of the base at no decrement to contract price. The Contractor will follow the local procedures for reporting in inclement weather as advertised on local television and radio stations.

SECURITY REQUIREMENTS

4.0 SECURITY REQUIREMENTS

4.1 All Contractor employees will be subject to a criminal history background check IAW DoDM 5200.08V3_AFMAN 31-101V3, Installation Perimeter Access Control, and 412th Test Wing Integrated Defense Plan (IDP) 31, Volume I (the AFMAN and IDP are both limited access documents but more details on the requirements/process in terms of background checks can be provided by the Contracting Office upon request). Vehicle registration, proof of insurance, and a valid driver's license must be presented for vehicles. Installation Commanders may deny access and credentials based on information obtained during identity vetting that indicates the individual may present a threat to the good order, discipline, and morale of the installation.

Base Access. For Contractor personnel requiring frequent base access to perform work at Nellis AFB, NV will be granted access via an Air Force Materiel Command (AFMC) Form 496, Application for AFMC Identification Card. Air Force Federal Acquisition Regulation Supplement (AFFARS) Clause 5352.242-9000, Contractor Access to Air Force Installations, the Prime Contractor shall submit a written request on company letterhead to the CO with the following information (prior to submitting a request for Base access via an AFMC Form 496): 1) contract number, 2) location of work, 3) contract start and stop date (must be on or before contract’s expiration date), and 4) names of employees/ subcontractor employees needing access to the base, to include each employee’s company name.

It is recommended that the Prime Contractor provide a copy of the request letter to each employee for verification purposes when the employee comes to the Contracting Office at Building 2800 to get their AFMC Form 496 signed. Employees for which no request letter can be found or provided will result in the employee being asked to return on another date/time so verification can be made.

Base passes will be limited to the length of the contract not to exceed 3 years from the date the AFMC Form 496 is submitted to the Contracting Office for signature.

The AFMC Form 496 will be reviewed/approved by the CO, then taken by the Contractor employee to the 99SFS S5B Nellis AFB, NV Pass & Registration Office located at 4625 Fitzgerald Blvd Bldg. 696, Nellis AFB, NV 89191 or the Visitor Control Center for the security portion and issuance of the Base pass.

The contractor shall comply with all base security regulations. Additionally, the contractor shall comply with actions dictated by force protection condition (FPCON) changes/measures and/or health protection condition (HPCON) changes/measures. For real-world situations/exercises, changes to force/health protection conditions could impact on contractor performance of work and can include denial of access to the installation to perform work

Only employees who will be working on the contract consistently/frequently should be submitted for a long-term Base pass.

4.2 The Contractor shall comply with all security requirements imposed by the Installation. Specific security considerations will be handled on an individual Task Order/contract basis as required. The contractor shall report suspicious activity to Security Forces in a timely manner.

Nellis AFB 702-652-2311

4.3 The Contractor and its employees shall comply with all base traffic regulations.

No States are subject to Real ID Act enforcement at this time. The Department of Defense will accept standard State-issued driver's licenses and identification cards from all U.S. States and territories as proof of identity. Please visit the Department of Homeland Security's (DHS) website to get the latest information, https://www.dhs.gov/current-status-states-territories. Once Real ID Act is enforced, the Contractor shall comply fully.

The contractor shall maintain and make available to the COR, within 30 days after award, records of Antiterrorism Awareness Level I required training of contractor employees and subcontractor employees who require routine physical access to the installation via 30 day pass, DBIDS Access card or Common Access Card (CAC), both initially and annually thereafter. AT Level I training provides contractor employees with the requisite knowledge necessary to remain vigilant for possible terrorist threats. Level I AT Awareness Training may be taken at https://jkodirect.jten.mil/Atlas2/page/login/Login.jsf for non-CAC holders. CAC holders may complete AT Level I training (Force Protection course ZZ133079) via myLearning at https://lms-jets.cce.af.mil/moodle/. Tracking for each contractor or subcontractor employee is the responsibility of the COR or unit Antiterrorism Representative.

The Contractor shall be responsible for safeguarding all government property, equipment and materials provided for Contractor use. At the end of each work period, all government facilities, equipment, and materials shall be secured.

During performance of the contract, the Contractor shall be responsible for obtaining required identification for newly assigned personnel.

The Contractor shall be responsible for prompt return of credentials and vehicle passes for: 1) any employee who no longer requires access to the work site; 2) upon request by a CO; and 3) upon completion or termination of the contract. The Prime Contractor shall ensure that all Base identification passes issued to employees and subcontractor employees are returned to the issuing office. Failure to comply with these requirements may result in the withholding of payment.

Contractor employees are prohibited from possessing weapons, firearms or ammunition, on themselves or within Contractor-owned or privately owned vehicle while on Nellis AFB.

4.4 OPSEC-The Contractor shall comply with DOD, USAF, and locally established Operations Security (OPSEC) policies and procedures to protect sensitive and unclassified information and/or equipment, which is furnished to and operated by the Contractor, and prevent compromise of classified information and equipment.

Contractor shall maintain Operations Security (OPSEC) in accordance with DOD Directive & Manual 5205.02, DOD Operations Security (OPSEC) Program, AFI 10-701, Operations Security (OPSEC), and Nellis AFB OPSEC policies and procedures.

Completion of OPSEC Training of contractor employees offered by the Government IAW AFI 10-701, para.

4.1 and 4.2.3 shall be required of all Contractor employees within 90 days of initiating work. Access to mission critical information will not be allowed until OPSEC education has been completed and documented.

This training provides Contractor employees with the requisite knowledge necessary to remain vigilant for possible threats, understand basic security procedures, understand the obligation to report security violations and the continued obligation to safeguard information. The requiring unit Security Manager/OPSEC

Coordinator will coordinate, and track completed training with the Contractor.

Contact the unit Security Manager/OPSEC Coordinator or Wing OPSEC Signature Manager at (661) 277- 2066 for questions or reporting.

APPENDIX-DEFINITIONS

Contract Administrator (CA). The individual within the contracting office who performs the day-to-day administration of the contract. The contract administrator may also be the contracting officer.

Contracting Officer (CO). The duly appointed Government agent authorized to award or administer contracts.

The contracting officer is the only person authorized to contractually obligate the Government.

Corrective Action Report (CAR). Used to document unacceptable performance by the Contractor.

Defect. Any non-conformance with requirements specified in the contract.

Defective Service. A service output that does not meet the standard of performance specified in the contract for that service.

Government Furnished Property (GFP). Facilities, equipment, tools, supplies, parts, or any other items furnished for the concessionaire's use by the Government.

Major discrepancy. A major finding is defined as a condition that would endanger personnel, jeopardize equipment or system reliability, affect safety of flight, or warrant discontinuing the process or equipment operation.

Minor discrepancy. A minor finding is defined as an unsatisfactory condition that requires repair or correction, but does not endanger personnel, affect safety of flight, jeopardize equipment reliability, or warrant discontinuing a process or equipment operation.

Performance Assessment. A process that measures success towards achieving defined performance objectives or goals defined within the performance thresholds in the services summary or the process of assessing progress towards achieving the objectives/goals developed in a performance plan or partnering agreement.

Performance Indicator. A measurable characteristic of an output of a work process. Generally synonymous with attribute.

Performance Management. The use of performance measurement information to effect positive changes in organizational culture, systems, and processes, by helping to set agreed upon performance goals, allocating and prioritizing resources, informing managers to either confirm or change current policy or program directions to meet those goals, and sharing results of performance in pursuing those goals.

Performance Objective. The outcome is associated with successful contract performance in a specific area.

This is a critical success factor in achieving the organization’s mission, vision and strategy which, if not achieved, would likely result in a significant decrease in customer satisfaction or risk mission failure.

Obtaining multi-services/sub-services performed at a certain measurable standard and consistently ensure success in achieving the objectives critical to the mission.

Performance Threshold. The minimum performance level of a performance objective required by the Government.

Quality Assurance (QA). Those actions taken by the Government to ensure services meet the requirements of the Statement of Work (SOW).

Contracting Officer Representative (QA or COR). Individual who monitors a Contractor on a daily basis and who is involved in every aspect of a contract to ensure the Contractor is in compliance with that contract.

Quality Assurance Program Coordinator (CORC). The individual designated by the contracting squadron commander to manage the installation QA program.

Quality Control (QC). Those actions are taken by a Concessionaire to control the performance of services so that they meet the requirements of the SOW.

Standard. An exact value, a physical entity, or an abstract concept, established and defined by authority, custom, or common consent to serve as a reference, model, or rule in measuring quantities or qualities, establishing practices or procedures, or evaluating results. A fixed quantity or quality. A defined measure of comparison.

ACRONYMS

AF Air Force AFB Air Force Base AFI Air Force Instruction AFMC Air Force Material Command AFMAN Air Force Manual AT Awareness Training CAC Common Access Card CO Contracting Officer COR Contracting Officer Representative DBIDS Defense Biometric Identification System DHS Department of Homeland Security DOD Department of Defense DTTR OL-N Digital Test & Training Range Operating Location-Nellis EPA Environmental Protection Agency FAR Federal Acquisition Regulation GFE Government-Furnished Equipment GFP Government-Furnished Property HVAC Heating, Ventilation, and Air Conditioning IAW In Accordance With IAW In accordance with NTTR Nellis Test & Training Range OPSEC Operation Security OSHA Occupational Safety and Health Administration pH Power of Hydrogen ppb Parts per Billion ppm Parts per Million PTSA p-Toluenesulfonic acid QTY Quantity SOW Statement of Work TDS Total Dissolved Solids USAF United States Air Force

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