PERFORMANCE WORK STATEMENT (PWS)

(Includes associated Performance Requirements Summary (PRS))

FUEL STORAGE TANK MANAGEMENT, MONTHLY / ANNUAL

INSPECTION, MAINTENANCE

SERVICE CALL, AND REPAIR — OSAN AIR BASE, REPUBLIC OF

KOREA

Department of the Air Force · 51st Civil Engineer Squadron (51 CES)

Osan Air Base · Republic of Korea · USFK Area III

Date: 13 August 2026 (supersedes Rev. August 8 2026)

Tank Inventory Baseline: 365 tanks · Current As-of Date (CAD): August 2026

Table of Contents

1. GENERAL

1.1. Description of Services

1.2. Background

1.3. Objectives

1.4. Scope

1.5. Initial Inspection Requirements

1.6. Period of Performance

1.7. Antiterrorism (AT) and Operations Security (OPSEC)

1.8. General Information

2. ADDITIONAL GENERAL REQUIREMENTS

2.1. Korean Regulatory Framework Compliance

3. DEFINITIONS AND ACRONYMS

3.1. Definitions

3.2. Acronyms

4. GOVERNMENT FURNISHED ITEMS AND SERVICES

5. CONTRACTOR FURNISHED ITEMS AND RESPONSIBILITIES

6. SPECIFIC TASKS

6.1. Initial Tank Inventory, STI Baseline Survey, and Pre-Inspection Service (Base Year Only)

6.2. Monthly Inspection with Preventive Maintenance (PM) & Annual Inspection with PM

6.3. Tank Cleaning Operations

6.4. Building 517 AAFES Gas Station — UST System Technical Inspections and Testing

7. SERVICE CALL ORDERS

8. TECHNICAL EXHIBITS

8.1. Technical Exhibit 1: Estimated Workload Data

8.2. Technical Exhibit 2: Performance Requirements Summary (PRS)

8.3. Technical Exhibit 3: Contract Data Requirements List (CDRL)

8.4. Technical Exhibit 4: Labor Allocation per Tank Inspection Index

8.5. Technical Exhibit 5: Osan Tank Inspection Checklists v4

9. APPLICABLE PUBLICATIONS

10. CONTINUATION OF ESSENTIAL DEPARTMENT OF DEFENSE (DOD) CONTRACTOR SERVICES

DURING CRISIS

11. ORGANIZATIONAL CONFLICT OF INTEREST

12. ENVIRONMENTAL CONTROLS

13. REFERENCES

14. GENERAL PROVISIONS

ATTACHMENT/TECHNICAL EXHIBIT LIST

1. GENERAL

The Contractor shall provide comprehensive fuel storage tank management, monthly and annual inspections, service calls, and repair services for Aboveground Storage Tanks (ASTs), Underground Storage Tanks (USTs), and associated systems located at Osan Air Base, Republic of Korea. The Contractor shall ensure all services comply with applicable

United States Federal, Department of Defense (DoD), and Department of the Air Force (DAF) regulations, as well as applicable host nation requirements. The Contractor shall provide all deliverables to the Contracting Officer

Representative (COR) per the Service Delivery Summary (SDS).

1.1. Description of Services

The Contractor shall provide all personnel, management, supervision, system testing equipment, tools, supplies, transportation, and other resources necessary to perform the following services:

Comprehensive Tank Management: The Contractor shall manage the operation of all organizational tanks in accordance with (IAW) DAFI 23-201, Fuels Management, and DAFMAN 32-1067, Water and Fuel Systems. The

Contractor shall:

a) Training and Coordination:

Complete tank custodian training within 30 days of contract start and maintain current certification throughout the period of performance. Attend and actively participate in all local tank Cross-Functional Team (CFT) meetings as scheduled by the installation. Provide advanced notice to the CEI Tank Compliance Manager prior to any planned tank operations, maintenance activities, or system modifications that may affect tank integrity or compliance status.

b) Inspections:

Monthly Tank Inspections and Maintenance (11x per year):

Conduct detailed monthly inspections of all organizational tanks and associated systems. Each monthly inspection and maintenance shall identify/respond to and document the presence or absence of:

• Leaks (active or suspected)

• Deterioration of tank body, coatings, or protective systems

• Corrosion on tank surfaces, piping, fittings, and appurtenances

• Structural fatigue in any portion of the tank or system components

• Deficiencies in sumps, leak detection systems, piping, valves, and ancillary equipment

Annual Tank Inspection and Maintenance (1x per year):

Conduct a comprehensive annual inspection and maintenance of all organizational tanks and associated systems. The annual inspection and maintenance shall include all elements of the monthly inspection plus:

• A thorough assessment of overall tank system condition and remaining service life

• Evaluation of compliance with current regulatory requirements

• Identification of/respond to any required corrective actions, repairs, or replacements

• Photographic documentation of all tank systems and any identified deficiencies

c) Direct Condition Rating (DCR):

• Upon initial inspection, the Contractor shall determine and provide an initial Nine-Rating Direct Condition

Rating (DCR) Scale assessment for each organizational tank. The DCR assessment shall be reviewed and concurred upon by the Installation POL Storage Tank Compliance (STC) Manager prior to finalization. The

Contractor shall submit the results to the COR.

• The DCR assessment shall evaluate the physical condition of each tank and its associated components, including but not limited to the tank body, piping, sumps, leak detection systems, containment structures, and protective coatings.

• The Contractor shall update the DCR assessment annually following completion of the annual comprehensive inspection and submit updated ratings to the COR within 15 calendar days of inspection completion. Annual

DCR updates shall also require STC Manager concurrence prior to recording in STAR.

d) Monitoring and Leak Response:

• Conduct routine monitoring of all organizational tanks and associated piping systems for leaks, damage, and signs of deterioration between scheduled inspections.

• Upon discovery of any leak or suspected release:

a. Immediately execute emergency notification procedures in accordance with installation spill response protocols.

b. Upon completion of emergency notification, report the incident to the Civil Engineer Environmental

(CEI) office.

c. Document the leak, response actions taken, and any environmental impact for inclusion in inspection records.

e) Documentation and Recordkeeping:

• Maintain complete and accurate documentation of all tank inspections (monthly and annual), monitoring activities, maintenance actions, DCR assessments, and incident reports.

• All documentation shall be kept on file and/or entered into the Storage Tank Accounting and Reporting

(STAR) system, as required by DAFMAN 32-1067.

• Ensure all tank inventory data, inspection records, and compliance documentation are current and accessible for review by Government personnel at all times.

f) Regulatory Compliance:

Ensure all tank operations, inspections, maintenance, and management activities comply with applicable federal, Department of Defense, Department of the Air Force, and installation-level regulations, policies, and guidance.

Deliverable: The Contractor shall provide a complete and verified tank inventory, including all required STAR entries, within 90 days of contract start. Ongoing inspection documentation shall be maintained on file or recorded in

STAR throughout the period of performance.

• Monthly and Annual Inspections: Conduct detailed monthly and annual inspections of ASTs, USTs, and day tanks to identify potential problems and ensure compliance with regulatory requirements. Deliverable:

Inspection reports with photos, submitted electronically within 5 calendar days of completion.

• Preventive Maintenance (PM): Perform routine preventive maintenance tasks to ensure the continued safe and reliable operation of fuel storage tank systems. These tasks shall include but not be limited to:

• Anti-Siphon Valve(s): Physical inspection for corrosion, damage, and proper installation; functional testing to verify correct valve closure and leak-free performance; cleaning of valve components to remove debris;

lubrication as per manufacturer specifications or industry best practices (e.g., API RP 1632, NFPA 30); and replacement of worn or damaged parts. Documentation of all PM activities, including inspection findings, corrective actions taken, and any deviations from standard procedures, is critical for maintaining a comprehensive maintenance history and demonstrating compliance.

• Check and Repair/Replace Secondary Containment or Interstice (Monthly): Inspect the secondary containment structures and interstices of double-walled tanks for water accumulation, debris, vegetation, cracks, fire hazards, or holes. Remove any accumulated water or debris and repair any identified deficiency.

If fuel is detected, contact the CE Environmental office.

• Check and Repair/Replace Leak Detectors and Overfill Alarms (Monthly): Verify the proper operation of leak detection systems and overfill alarms. Repair or replace any malfunctioning components to ensure these systems are functioning as designed.

• Check and Repair/Replace Seals and Manhole Covers (Monthly): Inspect seals and manhole covers for leaks, breaks, and corrosion. Replace any damaged or deteriorated seals or covers to maintain the integrity of the tank system.

• Check and Maintain Corrosion Control Systems (Annual): Inspect cathodic protection systems (galvanic and impressed current) for proper functionality. Ensure wire connections are secure and free of corrosion for galvanic systems. Record hour meter, ammeter, and voltmeter readings for impressed current systems.

• Check and Clear Primary and Secondary Vents (Annual): Verify that vent components are moving freely and that vent passageways are not obstructed.

• Check and Maintain Valves (Annual): Inspect the condition of all valves for leaks, corrosion, and damage.

Cycle valves open and close to check for proper operation and ensure that fire and shear valves are functioning correctly with fusible elements in place.

• Service Call Response: Respond to service calls for troubleshooting, repair, and replacement of components in fuel storage tank systems. This includes both routine and urgent/emergency service calls. Deliverable:

Service call logs, response times, and repair reports.

• Repair/Replacement Works: Conduct repair and replacement work to address identified deficiencies and maintain the integrity of fuel storage tank systems. Deliverable: Repair proposals, cost estimates, and completion reports.

• Tank Cleaning Operations: Oversee and perform tank cleaning operations in accordance with the detailed requirements of Section 6.3 (Tank Cleaning Operations) of this PWS. Tank cleaning shall be triggered by product changes, sludge accumulation, or pre-Formal External/Internal Inspection preparation. The

Contractor shall comply with API 2015 (Safe Entry and Cleaning of Petroleum Storage Tanks) for all tank entry operations. Deliverable: Tank cleaning plans, completion reports, and hazardous waste disposal certificates per Section 6.3 and CDRL 11.

• Record Keeping and Reporting: Maintain accurate records of all inspections, maintenance, repairs, and other activities, and submit required reports to the COR per the schedules specified in this PWS. Deliverable:

Complete and accurate records maintained in STAR and submitted as required.

• Spill Prevention and Response: Implement spill prevention measures and respond effectively to fuel spills and releases. Deliverable: Spill response plan, training records, and incident reports.

1.2. Background

The ASTs, USTs, and day tanks on Osan AB number approximately 365 as of the Current As-of Date (CAD), AUGUST 2026. The Contractor shall inspect all tanks on the current STAR inventory regardless of quantity fluctuations. No price adjustment shall result from changes in tank count within ±15% of the Attachment 2 baseline.

Changes exceeding ±15% require a bilateral contract modification. Tanks removed from service mid-year result in a pro-rated CLIN reduction; tanks added mid-year are incorporated at the applicable unit price via Contracting Officer written direction. The fuel tank services shall ensure tanks meet all safety and fire requirements. The work includes maintenance and inspection of ASTs, USTs, and day tanks to include but not limited to tank leak detection systems, high level alarms, and secondary containment systems, supply/return piping, valves, and fittings, electrical and mechanical components up/into the building, up to the shut-off valve before the equipment it serves or the designated fuel service point on Osan AB.

1.3. Objectives

The primary objectives of this PWS are to:

• Ensure compliance with all applicable U.S. Federal, DoD, DAF, and host nation regulations regarding fuel storage tank management, inspection, and repair.

• Maintain the integrity and reliability of fuel storage tank systems at Osan Air Base.

• Prevent fuel spills and releases and minimize their environmental impact.

• Provide timely and effective service to meet the operational needs of the Air Base.

• Minimize downtime and disruptions to Air Base operations.

1.4. Scope

This contract encompasses all ASTs, USTs, and day tanks at Osan Air Base. ASTs on this installation fall into three construction categories, each with distinct inspection standards:

(a) Convault/Concrete-Encased ASTs (majority of inventory): Shop-fabricated, double-walled steel tanks with a poured concrete exterior shell, listed to UL 2085 (Protected Aboveground Tanks for Flammable and Combustible

Liquids). These tanks incorporate integral secondary containment, fire resistance, ballistic resistance, and vehicle impact protection. Convault tanks include continuous electronic monitoring systems (interstitial leak detection, overfill prevention, liquid-level sensing) that require specialized inspection and diagnostic procedures. All Convault tanks shall be inspected IAW STI SP001 and UL 2085 maintenance requirements.

(b) Field-Erected ASTs: Carbon steel or stainless-steel tanks completed on-site during installation. Per UFC 3-460-

01, any AST with a capacity greater than 50,000 gallons is classified as a field-erected AST regardless of nameplate designation. Field-erected ASTs shall be inspected IAW API Standard 653 (Tank Inspection, Repair, Alteration, and

Reconstruction) for periodic and formal inspections and shall conform to the design and construction requirements of

API Standard 650 (Welded Tanks for Oil Storage). STI SP001 may serve as a supplemental periodic inspection standard for field-erected tanks under 30 feet in diameter and less than 50 feet in height.

(c) Shop-Fabricated ASTs (non-Convault): Conventional single-wall or double-wall steel tanks manufactured off-site and delivered as complete units. These tanks shall be inspected IAW STI SP001.

The following tanks are classified as field-erected based on capacity and/or construction method:

Tank ID Location Capacity (Gal) Product Classification

OS-00935-H1G1 Bldg. 935 80,000 Diesel TBD

OS-00940-H1G1 Bldg. 940 52,000 TBD Field-Erected

OS-01702-H2G2 Bldg. 1702 32,000 TBD Shop-Fab/TBD

NOTE: OS-00935-H1G1 (Bldg. 935) is an 80,000-gallon diesel backup generator supply tank. This tank and any other field-erected tank identified in the current inventory or discovered during inspections shall be subject to API 650/653 requirements as specified in this PWS. Tank OS-01702-H2G2 (32,000 gal) is below the 50,000-gallon UFC 3-460-01 field-erected threshold; however, the Government reserves the right to classify it as field-erected based on physical construction characteristics upon inspection. The COR’s written determination of tank classification is final.

(d) Fireguard / Insulated-Steel UL-2085 ASTs: Shop-fabricated double-wall steel tanks with a lightweight monolithic thermal-insulation material in the interstitial space between the inner tank and outer steel jacket, listed to

UL 2085, providing integral secondary containment, 2-hour fire resistance, ballistic resistance, and vehicle-impact protection without a concrete shell. Inspected IAW STI SP001 and UL 2085, supplemented by manufacturer procedures.

(e) Underground Storage Tanks (USTs): Tanks with ten percent (10%) or more of their combined volume, including connected underground piping, beneath the surface of the ground, as defined at 40 CFR 280.12. USTs on this installation include steel and fiberglass-reinforced plastic (FRP) single-wall and double-wall configurations serving vehicle fueling, fuel service, and POL reclamation functions. USTs are not within the scope of STI SP001, which applies to aboveground tank systems only. USTs shall instead be inspected, tested, and maintained in accordance with:

40 CFR Part 280, Subparts C and D, governing operation, maintenance, release detection, spill and overfill prevention, and corrosion protection; UFC 3-460-01 and DAFMAN 32-1067; PEI/RP900, Recommended Practices for the

Inspection and Maintenance of UST Systems, as the governing periodic inspection methodology; API RP 1615 and

API RP 1621 as applicable; NFPA 30, Chapter 23; and the Republic of Korea Soil Environment Conservation Act

( 토 양 환 경 보 전 법 ) administered by the Ministry of Environment and the Hazardous Materials Safety Management

Act ( 위 험 물 안 전 관 리 법 ) administered by the National Fire Agency, as implemented through the USFK

Environmental Governing Standards. UST scope includes the tank, underground piping, submersible turbine pumps, spill containment basins, overfill prevention devices, automatic tank gauging (ATG) equipment, release detection systems, sumps, and, where installed, impressed-current or sacrificial-anode cathodic protection systems. Cathodic protection systems on steel USTs shall be tested within six (6) months of installation or repair and at least every three

(3) years thereafter, and impressed-current systems shall be inspected every sixty (60) days for proper operation, in accordance with 40 CFR 280.31. Release detection shall be performed at least monthly in accordance with 40 CFR

280.41. Personnel performing UST testing shall hold the certifications required by applicable Federal and ROK law for the specific test being conducted; STI SP001 certification does not satisfy this requirement, and the Contractor shall identify separately the individual or subcontractor qualified to perform UST testing. Building 517 (OSAN

Express Gas, Facility 6310-1401-00) is subject to the additional UST system technical inspection and testing requirements of Section 6.4 of this PWS. All other USTs in the inventory are subject to the requirements of this paragraph and the monthly and annual inspection requirements of Section 6.2.

(f) Waste Oil, Used Oil, and Reclamation Tanks (All Construction Types): Tanks storing used oil, waste oil, reclaimed product, or recovered product constitute a regulatory classification rather than a construction classification, and occur across all construction types described in paragraphs (a) through (e), including aboveground and underground configurations. Each such tank shall be inspected in accordance with the standard applicable to its construction type as specified above, supplemented by the following requirements applicable to its contents: (1) Tanks storing used oil shall be managed in accordance with 40 CFR Part 279, Standards for the Management of Used Oil, including the labeling requirements of 40 CFR 279.22(c), which require containers and aboveground tanks to be labeled or marked clearly with the words “Used Oil.” (2) Tanks storing material determined to be hazardous waste under RCRA, USFKM 4715.05, or the Republic of Korea Wastes Control Act ( 폐 기 물 관 리 법 ) shall be managed as hazardous waste accumulation units in accordance with 40 CFR Parts 262 and 265 and Section 6.3.4 of this PWS, and are not eligible for management under 40 CFR Part 279. (3) All such tanks remain subject to the spill prevention, secondary containment, and integrity requirements of 40 CFR Part 112 and to the Republic of Korea Soil Environment

Conservation Act ( 토 양 환 경 보 전 법 ). (4) The Contractor shall report to the COR any tank whose contents or waste determination appears inconsistent with its labeling, permitted status, or the inventory record, within three (3) business days of discovery. The Contractor shall not make a waste determination on the Government’s behalf.

Polyethylene and Non-Metallic Tanks: Where a waste oil, used oil, reclamation, or other in-scope tank is of polyethylene, high-density polyethylene (HDPE), fiberglass-reinforced plastic (FRP), or other non-metallic construction, STI SP001 does not apply, as that standard governs steel aboveground tank systems. Such tanks shall be inspected in accordance with the manufacturer’s published inspection and service-life criteria, supplemented by the applicable provisions of NFPA 30 and the monthly and annual inspection requirements of Section 6.2 of this PWS.

Inspection shall address, at minimum: ultraviolet degradation, chalking, crazing, discoloration, and embrittlement of the tank wall; deformation, bulging, or distortion; stress cracking at fittings, bungs, and mounting points; condition of the tank support or saddle; and integrity of secondary containment. Non-metallic tanks are not subject to cathodic protection or wall-thickness measurement requirements. The Contractor shall report to the COR any non-metallic tank exceeding the manufacturer’s published service life, or for which manufacturer criteria cannot be obtained, for

Government determination of a replacement or continued-service decision.

Additional inventory includes:

• Some waste POL tanks are located in the bulk fuel storage area (DLA-E). Waste oil, used oil, and reclamation tanks occurring throughout the installation are within scope and are addressed at paragraph (f) below.

• Excluded — Waste Chemical Tank OS-02402-W1 (Bldg. 2402): This 3,000-gallon waste chemical tank is expressly excluded from the scope of this contract. Its contents are subject to a hazardous waste determination under RCRA, USFKM 4715.05, and the Republic of Korea Wastes Control Act

( 폐 기 물 관 리 법 ), and the tank is managed by 51 CES/CEIE under the installation hazardous waste program.

The Contractor shall not inspect, service, gauge, clean, or enter this tank, and shall not include it in any inventory, report, or invoice submitted under this contract. Should the Contractor observe a condition at this tank presenting an apparent spill, release, or imminent hazard, the Contractor shall report the condition to the

COR within twenty-four (24) hours and take no other action.

• Fuel tanks maintained by DLA Energy (unless otherwise specified).

• Fuel tanks (for sale) maintained by AAFES gas stations (after the shear valve). The precise scope boundary at each AAFES facility is the shear valve itself; the shear valve is included in the Contractor’s scope

(including annual shear valve cycling and fusible link testing per Section 6.4), and all equipment downstream of the shear valve (dispensers, hoses, nozzles, and dispenser meters, maintained by AAFES with NAF) is excluded. In the event of a scope boundary dispute, the COR’s written determination is final. Reference drawings identifying shear valve locations are maintained by 51 CES/CEIE and shall be provided to the

Contractor at contract start. Building 517 (OSAN Express Gas, Facility 6310-1401-00, Tank OS-00517-

M4D1) is subject to the additional UST system technical inspection and testing requirements of Section 6.4 of this PWS.

• Privatized systems (except as specifically provided in contractual terms).

The services include all tank-related infrastructure, including but not limited to:

• Tank leak detection systems

• High-level alarms

• Secondary containment systems

• Supply/return piping

• Valves and fittings

• Electrical and mechanical components (i.e., TMS2000, ATG, conduit)

• Fuel gauges

1.5. Initial Inspection Requirements

The Contractor shall perform a one-time initial inspection of all fuel tanks listed on the Estimated Fuel Tank Inventory

(Attachment 2). To meet the one-time initial inspection requirement, the Contractor shall inspect all tanks within the first four (4) months of the Base Year period of performance (POP). Based on the current inventory, the estimated monthly inspection rate is approximately 92 (365 ÷ 4, rounded up) tanks per month. The Contractor shall use the

Annual Inspection Checklist located on Attachment 2 (Estimated Fuel Tank Inventory — CAD August 2026) and/or

Para 6.2.1.2 (Annual Inspection Section) of this PWS. The Contractor shall employ a two-tier inspection workforce structure as follows:

Tier 1 — STI SP001 Certified Inspector (Annual Inspections and Initial Baseline Survey): All annual inspections, the initial baseline survey (Para 6.1), and all formal external/internal inspections (FEI/FII) shall be performed by an onsite Steel Tank Institute (STI) Certified SP001 Aboveground Tank System (ATS) Inspector who is physically present and actively supervising all inspection activities. The Contractor shall provide documentary evidence that each assigned STI SP001 inspector has:

a. Successfully completed the STI SP001 formal training course and passed the STI SP001 written examination.

b. Maintained a current, valid, and unexpired STI SP001 certification card, copies of which shall be submitted to the COR no later than 15 calendar days prior to the start of actual site work and upon each renewal thereafter.

c. Completed a visual acuity examination within the past 12 months, administered by a licensed optometrist, medical doctor, registered nurse, or certified physician’s assistant.

d. Completed STI-required continuing education to maintain certification currency.

e. Demonstrated minimum experience in construction, operation, inspection, and maintenance of steel storage tanks, pressure vessels, or steel piping systems as required by STI enrollment prerequisites.

Tier 2 — Delegated Inspector (Monthly Inspections): Monthly inspections may be performed by a Delegated

Inspector who is not required to hold STI SP001 certification, but who has been trained by the Contractor’s STI SP001

Certified Inspector and meets the following minimum qualifications:

a. Completed a documented training program administered by the Contractor’s STI SP001 Certified Inspector covering: STI SP001 inspection procedures and checklist requirements; tank system components identification and deficiency recognition; safety procedures for fuel tank environments including confined space awareness, PPE use, and emergency response; use of all required inspection equipment including the

AMEC 371 Resistance Tester; STAR data entry procedures; and photographic documentation standards.

b. Demonstrated proficiency through a minimum of five (5) supervised inspections conducted under the direct observation of the STI SP001 Certified Inspector prior to performing monthly inspections independently.

c. Maintained current certifications in confined space awareness, hazardous materials handling, and first aid/CPR.

d. Completed a visual acuity examination within the past 12 months, administered by a licensed optometrist, medical doctor, registered nurse, or certified physician’s assistant.

The Contractor shall submit the Delegated Inspector’s training records, qualifications, and supervised inspection log to the COR for acceptance within 30 calendar days of contract award or within 15 calendar days of assigning a new

Delegated Inspector. The COR reserves the right to reject any proposed Delegated Inspector whose qualifications are deemed insufficient.

Dual-Signature Validation Requirement (Monthly Inspections): A monthly inspection shall only be considered valid and accepted by the Government if the completed inspection record bears BOTH of the following signatures:

(1) the Delegated Inspector who physically performed the on-site inspection, and (2) the STI SP001 Certified Inspector who reviewed, verified, and validated the inspection findings. The STI SP001 Certified Inspector’s co-signature certifies that: (a) the inspection was performed in accordance with the procedures and checklists prescribed in this

PWS; (b) the documented findings, deficiency classifications, AMEC 371 resistance readings, and clock-type gauge observations are technically accurate and complete; and (c) all identified deficiencies have been properly categorized, reported to the COR, and recorded for STAR upload. A monthly inspection report submitted without both signatures shall be rejected by the COR, shall not be uploaded to STAR, and shall require the Contractor to re-perform the inspection at no additional cost to the Government. The STI SP001 Certified Inspector shall complete the review and co-sign the inspection record within 3 business days of the Delegated Inspector’s completion of the on-site inspection.

Unsigned or late-signed inspections are subject to the Liquidated Damages provisions of Para 7.5.4.

General Inspector Requirements (Both Tiers):

The STI SP001 Certified Inspector is hereby designated as Key Personnel. The Contractor shall maintain a currently certified STI SP001 Inspector available at all times during the period of performance. The STI SP001 Inspector shall be physically on-site for all annual inspections, the initial baseline survey, and all formal inspections (FEI/FII). For monthly inspections, the STI SP001 Inspector is not required to be on-site but shall review and co-sign all monthly inspection records per the Dual-Signature Validation Requirement above. In the event of an unplanned vacancy of the

STI SP001 Inspector position, a certified replacement shall commence performance within 14 calendar days. During any vacancy period, no annual inspections shall be conducted and no monthly inspection records shall be validated;

the Contractor shall not be compensated for inspection services during the vacancy. Monthly inspections may continue to be performed by the Delegated Inspector during the vacancy but shall be held pending the replacement STI SP001

Inspector’s review and co-signature. Proposed replacements are subject to Contracting Officer written approval prior to assuming duties. The Contractor shall immediately notify the COR if the assigned STI SP001 inspector’s certification expires, is suspended, or is revoked. The Contractor shall provide written authorization for the

Government to verify certification status directly with STI; such authorization shall be submitted within 10 calendar days of contract award. Contractors shall provide copies of this and all future inspection records and fuel inventory to the COR on a bi-weekly basis or upon the request of the COR. The initial inspection will be used as a baseline for scheduling annual inspections. A work schedule will be provided by the COR on the last day of every month so that they can facilitate escorts where necessary.

Certification Prior to Notice to Proceed: Where the Contractor did not hold STI SP001 Certified Inspector certification at the time of quotation and was awarded this contract on the basis of a commitment to obtain that certification, the Contracting Officer shall not issue the Notice to Proceed until the Contractor has furnished a copy of a current, valid, and unexpired STI SP001 Certified Inspector certification card for the named individual, together with evidence of successful completion of the STI SP001 formal training course and passage of the written examination. That submission satisfies subparagraph b of the Tier 1 requirements above. No period of performance under this PWS is deferred, extended, or otherwise modified by this paragraph; all periods measured from the Notice to Proceed, including the initial tank inventory, STI baseline survey, and pre-inspection service required within 30 working days after the Notice to Proceed under Para 6.1, and the one-time initial inspection of all tanks required within the first four (4) months of the Base Year, run from the Notice to Proceed as issued. The Contractor's own certified inspector shall perform all Tier 1 work and shall conduct the Delegated Inspector training and supervised inspections required under Tier 2; a subcontractor's certification shall not be substituted for the Contractor's own required expertise. If the Contractor has not furnished a valid certification card within ninety (90) calendar days after the date of award, the Contracting Officer will issue a written notice affording the Contractor ten (10) calendar days to cure, after which the Government may terminate the contract for cause in accordance with FAR 52.212-4(m).

Minimum Time-on-Site Requirements: Shop-Fabricated/Convault AST: 45 minutes; Field-Erected AST: 90 minutes; UST: 90 minutes; Day Tank: 30 minutes. A daily inspection log showing tank ID, inspector name, and start/end time shall be submitted each Friday during the initial inspection period. The 10-working-day report deadline runs from completion of the last tank inspected. The Contractor shall account for Korean national holidays including the Lunar New Year period when developing the initial inspection schedule.

After completion of all monthly/annual inspections, the Contractor shall prepare and submit an electronic and hard copy of a Tank and Ancillary Equipment Deficiency Report. The report shall include the date and time of the inspection, the location of the fuel storage system, the required repairs/replacements identified, and a list of parts needed for the repair. The Contractor shall develop a comprehensive report to include each tank that was inspected and consolidate all tank deficiencies. The report shall also include the following:

a. Completed checklist for each tank inspection (checklist will be provided by the CE Environmental Office)

b. Each identified tank deficiency (Nine-Rating DCR Scale — Direct assessment and prioritization)

c. The specific part or ancillary equipment (e.g., sump gasket, fitting, probe, grommet, etc.) that needs repair or replacement

d. Recommended course of action to fix identified tank deficiency

e. Cost estimate for replacement or repair

f. Recommendation to prevent spills if the tank condition is not fixed immediately

g. Summary of the identified issue and way forward

h. Summary of disconnected systems, emptied or low volume (less than 5% volume for 6 months), new systems, and unidentified systems — Upon discovery of any tank not present in the current STAR inventory: (1) stop work within 10 feet immediately; (2) notify COR verbally within 2 hours; (3) submit written notification with location, approximate dimensions, and visual condition within 24 hours.

1.5.1. Temporarily Out-of-Service (TTOS) Tank Requirements: Tanks that are temporarily taken out of service shall be managed in accordance with NFPA 30 Section 21.7.4 (Tanks Temporarily Taken Out of Service), NFPA 1

Section 66.21.7.4 (Tanks Temporarily Taken Out of Service), and IFC Section 5704.2.13.2 (Temporarily Out-of-

Service Aboveground Tanks). The Contractor shall comply with the following requirements for all TTOS tanks:

(a) Notification and Status Change: The Contractor shall not change the operational status of any tank (active to TTOS, TTOS to active, or TTOS to permanently closed) without prior written authorization from the

Contracting Officer. Upon Government direction to take a tank temporarily out of service, the Contractor shall update the tank’s status in STAR within 3 business days and notify the COR in writing confirming the status change and effective date.

(b) TTOS Safeguarding Requirements (NFPA 30 Section 21.7.4, IFC 5704.2.13.2): For ASTs temporarily taken out of service, the Contractor shall: (i) cap or plug all fill openings and gauge openings to prevent vapor release, rainwater intrusion, and unauthorized access; (ii) maintain the normal venting system in an operational condition to prevent vacuum or pressure buildup; (iii) maintain all leak detection, overfill prevention, and monitoring systems in operational condition unless the tank has been fully cleaned, purged, and certified gas-free; (iv) maintain secondary containment in serviceable condition; (v) maintain all fire protection systems and devices (fire valves, shear valves, fusible links) in operational condition; and (vi) post signage at the tank indicating “TEMPORARILY OUT OF SERVICE — DO NOT FILL” in both English and Korean (“임시 사용 중지 — 주유 금지”), visible from all fill point approach directions.

(c) Continued Inspection Requirements: TTOS tanks shall continue to receive monthly inspections using the applicable baseline and supplemental checklist items. The monthly inspection shall specifically verify that all TTOS safeguarding requirements in Para 1.5.1(b) above remain in compliance. Any deterioration of TTOS safeguarding conditions shall be annotated on the inspection sheet and reported to the COR within 24 hours.

TTOS USTs shall additionally continue to receive monthly inspections per 40 CFR §280.70 until formally closed or returned to service.

(d) TTOS Duration Limitations: Per NFPA 30 Section 21.7.4 and IFC 5704.2.13.2, a tank shall not remain in

TTOS status for more than 12 consecutive months. The Contractor shall notify the COR in writing not less than 90 calendar days prior to the expiration of the 12-month TTOS period. If the Government does not provide written direction to either return the tank to active service or permanently close the tank prior to the

12-month deadline, the Contractor shall escalate notification to the Contracting Officer. A tank that has been in TTOS status for more than 12 months without written Government direction constitutes a regulatory non-compliance that shall be documented in the monthly inspection report.

(e) Return to Service from TTOS: The Contractor shall not recommission any TTOS tank without written

Contracting Officer authorization. Prior to returning a TTOS tank to active service, the Contractor shall: (i) perform a comprehensive annual-level inspection of the tank and all associated systems; (ii) verify all monitoring, leak detection, overfill prevention, and fire protection systems are fully operational; (iii) remove all TTOS signage; (iv) update the tank status in STAR; and (v) submit an inspection report to the COR confirming the tank is safe and compliant for return to active service. The return-to-service inspection shall be performed at no additional cost to the Government if the tank was in TTOS status for less than 90 days;

tanks in TTOS status for 90 days or more shall require a return-to-service inspection under the repair CLIN.

1.6. Period of Performance

Period Start Date End Date

Base Year 01 January 2027 31 December 2027

Option Year 1 01 January 2028 31 December 2028

Option Year 2 01 January 2029 31 December 2029

Option Year 3 01 January 2030 31 December 2030

Option Year 4 01 January 2031 31 December 2031

1.7. Antiterrorism (AT) and Operations Security (OPSEC)

1.7.1. Antiterrorism: Contractor personnel or any representative of the Contractor entering the installation/base shall abide by all security regulations imposed by the Installation Commander or Base Commander at all times and shall be subject to security checks. Contractor personnel and property shall be subject to search and seizure upon entering, while on, and upon leaving the confines of the installation/base.

1.7.2. Access and General Protection/Security Policy and Procedures: The Contractor shall be required to obtain base passes to Osan Air Base to fulfill the requirements of this contract. The Contractor shall be responsible for submitting its base pass request no later than ten (10) calendar days after award of this contract. It should be noted that it can take up to 30 days or more to process base pass paperwork. It shall be the responsibility of the Contractor to prepare the necessary base pass paperwork to include USFK FORM 82, 29 OCT 2024, family history register, local register, etc. for each individual requiring access to Osan Air Base.

1.7.2.1. The Contractor shall also be authorized to receive vehicle passes for each of the Contractor’s vehicles used in the performance of the requirements of this contract. It shall be the responsibility of the Contractor to prepare the necessary paperwork using USFK FORM 195-E, 09 JUN 16, and must provide vehicle registration, vehicle insurance, certificate of safety inspection, and a copy of driver’s license for each vehicle requiring access to Osan Air Base. The

Contractor shall prepare a cover letter listing each individual, skill, escort privileges, vehicle type, vehicle registration number, etc. The Contractor shall also provide the COR with two (2) copies of this request.

1.7.3. AT Training: The training IWATCH/EAGLE EYES/AT Level I shall be completed within 30 calendar days of contract award and within 30 calendar days of new employees commencing performance, with the results reported to the COR NLT 45 calendar days after contract award. AT Level I awareness training is available at the following website: https://atlevel1.dtic.mil/at.

1.7.4. OPSEC: The Contractor and all associated sub-contractors shall practice Operations Security. The Contractor shall not discuss work outside of the work area nor discuss the work being performed on social media. Unless absolutely necessary to perform the duties stated in the contract, the Contractor shall not take pictures of, or inside, sensitive locations as determined by the COR. It shall be the responsibility of the Contractor to safeguard all documents provided. Documents shall be stored away from view when not being used. Documents that are no longer needed shall be shredded in an approved government shredder. Violation of OPSEC requirements may result in revocation of base access, contract performance suspension, and/or termination for default.

1.8. General Information

1.8.1. Quality Control Plan (QCP): The Contractor shall additionally comply with the Republic of Korea

Occupational Safety and Health Act (산업안전보건법) and all applicable Korean Ministry of Employment and Labor

(MOEL) safety regulations. The Contractor shall certify that it has had no major OSHA or Korean MOEL violations, citations, or enforcement actions within the preceding three (3) years. Documentation of compliance shall be provided to the COR upon request. The Contractor shall maintain a sufficient inventory of Personal Protective Equipment for all assigned personnel, with a minimum of two (2) complete sets per inspector, (PPE) specifically rated and approved for fuel tank environments, including but not limited to:

a) Chemical-resistant gloves and boots.

b) Flame-resistant (FR) clothing.

c) Self-contained breathing apparatus (SCBA) or supplied-air respirators for confined space entry.

d) Calibrated gas detection monitors for each inspection team.

e) Anti-static grounding equipment.

The Contractor shall hold ISO 45001 Occupational Health and Safety Management System certification or equivalent or shall demonstrate that its safety management program achieves equivalent outcomes. Documentation shall be submitted to the COR within 14 calendar days of contract award. The QCP shall include procedures to identify, prevent, and ensure non-recurrence of defective services. The Contractor shall submit a written QCP to the COR within ten (10) calendar days after contract award and resubmit within 5 calendar days if it is not accepted by the

Government. An updated copy of the Contractor’s plan shall be provided to the Contracting Officer and COR as changes occur. Any changes to the QCP require the Contracting Officer’s written acceptance. The QCP shall contain as a minimum the following items:

a. A description of the inspection system to cover all services. Description shall include specific details as to the areas to be inspected on a scheduled and unscheduled basis, frequency of inspections, and the title and organizational placement of the inspector(s).

b. A description of the methods to be used for identifying and preventing defects in the quality of service performed.

c. A description of how the records will be kept. Records must document all inspections and corrective or preventive actions taken.

d. The Contractor shall address all tasks in the PRS table including objectives, performance standards, AQLs, data sources, and calculation methods.

1.8.2. Quality Assurance: The Government will evaluate the Contractor’s performance under this contract IAW the

Quality Assurance Surveillance Plan (QASP). The QASP will primarily focus on what the Government must do to ensure that the Contractor has performed IAW the performance standards. The QASP will define how the performance standards will be applied, the frequency of surveillance, and the minimum acceptable defect rate(s).

1.8.3. Recognized ROK Legal Holidays:

New Year's Day — 1st of January

Lunar New Year (by the Lunar calendar) — 31st of December, 1st & 2nd of January

Independence Movement Day — 1st of March

Buddha's Birthday (by the Lunar calendar) — 8th of April

Children's Day — 5th of May

Memorial Day — 6th of June

Constitution Day — 17th of July

National Liberation Day — 15th of August

National Foundation Day — 3rd of October

Chu-Sok (by the Lunar calendar) — 14th, 15th, and 16th of August

Hangul Day — 9th of October

Christmas Day — 25th of December

1.8.4. Recognized U.S. Holidays: The recognized U.S. legal holidays are listed below.

New Year's Day — 1st of January

Martin Luther King Jr. Day — 3rd Monday of January

Presidents Day — 3rd Monday of February

Memorial Day — Last Monday of May

Juneteenth Day — 19th of June

Independence Day — 4th of July

Labor Day — 1st Monday of September

Columbus Day — 2nd Monday of October

Veteran's Day — 11th of November

Thanksgiving Day — 4th Thursday of November

Christmas Day — 25th of December

1.8.5. Hours of Operation: The Contractor shall conduct routine business between 0700 and 1700, Monday through

Friday, except for US and Korean holidays or when Government facilities are closed due to local or national emergencies, administrative closings, or similar Government-directed facility closings. Emergency/urgent service calls require 24-hour/7-day response capability, including weekends and all recognized holidays. The Contractor shall maintain a staffed hotline at all times for this purpose. The Contractor shall at all times maintain a workforce of sufficient size and qualification for the uninterrupted performance of all tasks defined within this PWS when the

Government facility is not closed for the above reasons.

1.8.6. Place of Performance: The Contractor shall perform services at all locations on Osan Air Base or satellite locations which also fall under the jurisdiction of Osan AB where fuel storage tanks are located, as directed by the

COR. The Contractor shall provide services to perform inspection and testing, maintenance, and repair of tanks on

Osan AB that are not currently under manufacturer’s warranty by a different vendor to ensure reliable and continuous safe operation in accordance with the manufacturer’s specifications and/or Steel Tank Institute (STI) Specification

001 (STI-SP001), United States Forces Korea (USFK) Regulation 201-1, and DAFMAN 32-1067. These shop-fabricated tanks, including organizational fuel tanks as defined in DAFMAN 32-1067, are within scope.

1.8.7. Environmental Requirements: The Contractor shall ensure all workers are familiar with the goals of the Osan

AB Environmental Management Systems (EMS) as stated in the installation’s Environmental Policy Statements and have an awareness of EMS. The Contractor’s work under this contract shall conform with all operational controls identified in Osan AB EMS and provide monitoring and measurement information necessary for the Government to address environmental performance relative to the goals of the EMS. Where environmental training is required for

Contractor employees to complete contract tasks, the Contractor shall provide proof of completion of training to the

Contracting Officer when requested.

a. Construction Debris and Waste Management: Construction debris and litter from work areas within the project site shall be collected and placed in watertight dumpsters at least weekly, regardless of whether the debris was generated by the Contractor, the public, or others. Collected debris shall not be placed in or near drain inlets, stormwater drainage systems, or watercourses. Solid waste storage areas shall be located at least

15 meters (50 feet) from drainage facilities and watercourses and shall not be located in areas prone to flooding or ponding. Hazardous materials and waste containers shall be placed in secondary containment.

Containers used to store construction debris must have waterproof and leak-proof lids.

b. Hazardous Materials (HAZMAT) Management: The Contractor shall submit HAZMAT information

(e.g., paints, coatings) and AF Form 3952 in accordance with AFMAN 32-7002, Chemical Hazardous

Material Request Authorization, along with Safety Data Sheets (SDS), to obtain HAZMAT approval from the Bioenvironmental Engineering (BEE), Safety, and Environmental Office. All paint products used must be lead-free. Surface coatings and painting shall be applied using brushes or rollers. Spray equipment is prohibited unless specifically recommended by the paint manufacturer or approved by the Environmental

Office.

c. Welding and Brazing Activities: Welding and brazing activities shall be performed indoors whenever possible. Nearby drain inlets shall be covered, and metal particulates generated during these activities shall be swept up and properly disposed of after each event.

d. Construction and Demolition (C&D) Waste Reporting: The Contractor shall comply with USFKM

4715.05, Environmental Governing Standards (EGS), Enclosure N, Solid Waste. The Contractor shall report the metric tons of C&D debris, including costs for landfill disposal, incineration, or recycling, to the

Environmental Office through the COR every 30 days for each project site. The Contractor shall use roll-off type C&D containers with waterproof lids and ensure they remain covered except when in use.

e. Scrap Metal Recycling: Scrap metal, including but not limited to metal structures, roofs, railings, beams, copper pipes, tubing, and HVAC equipment, shall be collected by the Contractor for disposal and sale through the Osan AB Qualified Recycling Program (QRP) in accordance with DoD Instruction 4715.23.