B.01 Shaw AFB FY26 ORC_PWS_v2.2.6_20260218_redlined.docx

Solicitation Number:

PERFORMANCE WORK STATEMENT

FOR

OPTIMIZED REMEDIATION CONTRACT

AT

SHAW AFB, SOUTH CAROLINa

CONTRACT NUMBER: tbd

05 18 January February 2026

Table of Contents

1.0 SCOPE

This requirement is for environmental remediation activities at Shaw Air Force Base (AFB), South Carolina (SC). This Performance Work Statement (PWS) defines the scope of environmental services necessary to conduct site restoration under the Optimized Remediation Contract (ORC). The range of activities includes investigation, design, construction of remedial systems, operation and maintenance of established remedies, optimization at applicable sites, and achievement of site-specific objectives. The Contractor shall undertake Environmental Remediation activities to achieve Performance Objectives (POs) at eighteen (18) Installation Restoration Program (IRP) sites and zero (0) Military Munitions Response Program (MMRP) sites.

NOTE: For purposes of this ORC, the term “Government” includes the Air Force (AF) and United States Army Corps of Engineers (USACE). While regulators are a governmental entity, they are also a third party over whom the Air Force has no control and, as such, will be referred to as “regulators.”

1.1 Introduction

Shaw AFB is an active U.S. Department of Defense (DoD) installation located in northwest Sumter County, South Carolina, approximately 37 miles east of Columbia and 7 miles west of the City of Sumter along U.S. Highway 76/378. Sumter County is located in the central portion of the state and is bounded by Lee County to the north, Florence County to the east, Clarendon to the south, and Richland County to the west. The base encompasses 3,570 acres set in a mostly rural and agricultural area, although residential and commercial developments are present near the western and southeastern boundaries of the base.

Shaw AFB was activated on 30 August 1941 as one of the largest flying fields in the United States with its first task being to train cadets to fly. The first group of cadets arrived on 04 December 1941. The installation consists of airstrips, fuel depots, aviation equipment storage hangers, support buildings, residential buildings, and recreational areas.

Shaw AFB is currently home to the 20th Fighter Wing, the Air Force’s largest combat F-16 wing whose mission is to provide, project, and sustain combat-ready air forces. Shaw AFB also serves as home to Headquarters Ninth Air force and United States Air Forces Central Command whose primary mission is to project decisive air and space power for the United States Central Command and America. The 3rd Army is also located at Shaw AFB with its primary operations in the eastern portion of the base.

Remediation activities at Shaw AFB are being conducted pursuant to the National Oil and Hazardous Substances Contingency Plan (NCP), and the Resource Conservation and Recovery Act (RCRA) requirements. Regulatory oversight is provided by the South Carolina Department of Environmental Services (SCDES).

Installation is being administered under a RCRA Corrective Action Permit dated and last renewed in 2019 with the next expiration in 2029; this document requires 1 to 2 years advanced coordination and submittal in order to be in place before the current permit expires.

1.2 Overview of ORC Scope and Requirements

The Contractor shall perform all the necessary environmental remediation activities needed to achieve the performance requirement described in Table 1: Performance Table, and additional scope in 1.3.2. This PWS and enclosures listed below detail the project requirements needed to meet the AF objectives:

Enclosure 1 – Acronyms and Definitions Enclosure 2 – Government Furnished Information (GFI) Enclosure 2A – Administrative Record Spreadsheet Enclosure 2B – GFI CD Base Documents Spreadsheet - Not Applicable Enclosure 2C – Site-Specific GFI Enclosure 3 – Government Furnished Property (GFP) - Not Applicable Enclosure 4 – Community Involvement Plan (CIP) Guidance version 4 The intent of the ORC initiative is to advance site cleanup during the Period of Performance (POP) in the most efficient and cost-effective manner, as supported by a cost-benefit analysis and exit strategy that achieves the greatest reduction in life-cycle cost (LCC). The AF is interested in substantial reduction of long-term environmental liabilities and total LCC. Technical approaches that are simply reduced to a minimal level of effort with no well-planned contingencies provide no assurance to the Government that the POs will be achieved without work stoppages or change orders which is not in keeping with the intent of this performance based contracting effort. The AF is required to implement remedies as necessary to enable the mission, protect human health and the environment, and comply with laws and regulations. The goal of the ORC initiative is to ensure the AF continues to fulfill all facets of its Environmental Restoration Program (ERP) mission, by effectively and efficiently managing the program in a performance-based, results-oriented, and cost-conscious framework.

The AF requires that all sites be remediated to standards that allow for the current or reasonably anticipated future land use of the property. Accurate documentation and reporting of contaminant removal and cost savings are critical adjuncts to optimization success. In keeping with Defense Environmental Restoration Program (DERP) and Air Force Instruction (AFI) 32-7020, the AF defines optimization under the ORC as the reduction of contaminant mass and concentrations, reduction in LCC, or any combination of activities leading to acceleration of Response Complete (RC)/Site Closeout (SC) as a result of remedial implementation the Contractor undertakes, above and beyond what is required to maintain compliance in accordance with an approved Decision Document (DD).

The Contractor shall maintain compliance with all DDs/Records of Decision (RODs)/Proposed Plans/RCRA Permits that are currently in place until no longer required, or an alternate approach is approved. The contractor shall conduct DD/ROD amendments or Explanation of Significant Differences (ESD) as required to implement new approach(es).

The Contractor shall function as an integral team member in support of the Air Force Civil Engineer Center (AFCEC) mission to include the sharing of information with USACE, other AFCEC Contractors, and AF personnel, in cooperation with community stakeholders, regulators, and other Government entities.

Requirements for efficient management of this contract include the achievement of the POs in the Performance Period (PP) per Table 1 and work described in Section 1.3.2 of this PWS. Requirements include timely identification and solution of impediments to successful project execution. The Contractor shall provide all personnel, equipment, supplies, tools, materials, and other items necessary to perform the tasks defined in this PWS. The Contractor is solely responsible for reviewing all available information and forming their independent, professional conclusions/interpretations of site conditions and requirements to achieve the POs of this contract within the PP specified in accordance with Section 3.0. AFCEC will rely on the Contractor’s expertise in recognizing and addressing problematic issues during the execution of this contract. The Contractor shall perform all work in accordance with federal, state, and local statutes and regulations. The Contractor shall also comply with installation regulations. Remedies shall conform to environmental permits, DD requirements, or other legal requirements. The Contractor shall continue work throughout the entire duration of the POP. The Contractor’s local office presence will be relied upon to provide rapid-response actions for field activities and on-site meetings.

1.2.1 Specific Scope Discussion and Limits

The scope of this contract is to perform environmental remediation services for the sites listed in Table 1 and Section 1.3.2. The ORC Contractor shall assume contractual liability and responsibility for achieving the POs. If the selected technical approach is not working, as demonstrated by the trends in the performance model, the Contractor shall develop and implement a revised technical approach to achieve the POs, including DD amendments, if required, to implement the remedial approach. This scope includes all known contaminants linked to the specific sites per Table 1 of the PWS (includes contaminants on, under, or sourced at/migrating from the specific sites) without regard to quantity (e.g., plume size, concentrations). See reference to Section 1.3.2 of this PWS for exclusions. The AF remains statutorily responsible for all sites listed in Table 1 and work described in Section 1.3.2.

1.2.2 Preliminary Assessment/Site Inspection, Remedial Investigation or Remedial Investigation/Feasibility Study (including Supplemental Investigations), and Decision Document Table 1 of the PWS identifies Preliminary Assessment/Site Inspection (PA/SI), Remedial Investigation (RI) or RI/Feasibility Study (FS), including Supplemental Investigations, and DDs as the PO for selected sites. The Contractor is responsible for achieving these POs as identified in Table 1 and work described in Section 1.3.2. See PO definitions in Enclosure 1, Acronyms and Definitions.

1.2.3 Response Complete or Site Closeout

Table 1 of the PWS identifies RC or SC as PO for selected sites. The Contractor is responsible for achieving these objectives as identified in Table 1 and work described in Section 1.3.2. See PO definitions in Enclosure 1, Acronyms and Definitions. The performance components, including the need for a performance model, are described in Section 8.1.3.

1.2.4 Remedial Action-Operation with Optimization including Interim RA-O (IRA-O) with Optimization Table 1 of the PWS identifies the following POs which include optimization as follows: 1. Remedy in Place (RIP) and Remedial Action-Operation (RA-O) with Optimization, 2. DD Amendment (or Explanation of Significant Differences [ESD]) with Remedy Implementation and RA-O with Optimization, or 3. RA-O with Optimization. The Contractor is responsible for achieving these POs as identified in Table 1: Performance Table and additional scope described in Section 1.3.2. See PO definitions in Enclosure 1, Acronyms and Definitions.

The optimization and performance components, including the need for a performance model showing interim and final performance payment milestones, are described in Section 8.1.3. Optimization goals may include one or more of the following:

1. Shorten time to RC, SC, or other DoD goals.

2. Improve remedy performance and/or accelerate the progress of the remediation.

3. Enhance source or plume control for engineering systems.

1.2.5 Remedial Action-Operation and Reduce Life Cycle Cost; Long Term Management and Reduce Life Cycle Cost Table 1 of the PWS identifies RA-O and Reduce LCC or Long-Term Management (LTM) and Reduce LCC as the PO for selected sites. The goal of these POs is to minimize future AF liability and cost to the greatest degree feasible. Reduce LCC sites have achieved RIP or RC, have remedies that are effective (source control, risk mitigation, and plume stability), and have the potential for LCC reduction by optimizing some component of the existing remedy, by, for example:

· Reducing sampling frequency

· Reducing system operations

· Reducing number of wells sampled per event

· Reducing number of analytes per sampling event The Contractor shall achieve the following objectives for each Reduce LCC site:

· Maintain compliance with all DDs and permits (currently in place or to be approved) throughout the POP.

· For RA-O sites, develop performance models showing interim and final performance payment milestones, addressing all Contaminants of Concern (COCs) and breakdown products. Refer to Section 4.3 and Section 8.1.3.1.

· Deliver a Reduce LCC Plan, as a stand-alone plan or in the Project Management Plan (PMP), that identifies opportunities to improve cost efficiency of RA-O or LTM activities, and the planned approach for implementation. The Reduce LCC Plan shall:

· Provide a basis for proposed reductions in LCC throughout the POP compared to the cost of status-quo RA-O activities (those required to maintain compliance). The planned reduction can be illustrated using a line graph (current, planned, achieved) or verbiage describing the current and planned reductions.

· Document risk and mitigation strategies for implementing optimization activities to reduce LCC.

· Update or revise site-specific work plans, monitoring plans, and/or DDs, as appropriate.

· Deliver Reduce LCC Reports to document progress in achieving the planned reductions when those reductions are achieved. Reduce LCC Reports may be combined with monitoring reports. Reductions in required RA-O activities are contingent upon regulatory approval.

· Deliver an RA-O & Reduce LCC Summary and Forecasting Report two years prior to the POP end date. The Reduce LCC Summary and Forecasting Report shall:

· Document cost-saving activities to date and forecast remaining activities and assumptions to further reduce LCC 10 years post-POP.

Provide a realistic projection to achieve SC or RC after the POP (the Contractor shall identify which PO is the optimal endpoint). See PO definitions in Enclosure 1, Acronyms and Definitions.

1.2.6 Remedial Action-Operation or Long-Term Management (as appropriate) Table 1 of the PWS identifies RA-O or LTM in accordance with the approved RCRA Permit as the PO for selected sites. The Contractor shall achieve the following objectives for each RA-O and LTM site:

Maintain compliance with all DDs and permits (currently in place or to be approved) throughout the PP. Update or revise site-specific work plans, monitoring plans, and/or DDs, as appropriate.

For RA-O sites, develop performance models addressing all COCs and breakdown products. Refer to Section 8.1.3.1, Performance Models.

· Provide a realistic projection to achieve SC or RC after the POP (the Contractor shall identify which PO is the optimal endpoint).

1.2.7 Alternate Objectives

This section and the subparagraphs below describe the Alternate Objective Sites and a general overview of the work associated with these sites. Please see Table 1 and work described in Section 1.3.2 for specific elements of work required for each site with an Alternate Objective PO. These sites have complex attributes that have, to date, inhibited progress toward the achievement of RC. For Alternate Objective sites, as for all sites in Table 1 of the PWS where applicable, the Contractor shall maintain compliance throughout the POP of the contract with all existing regulatory requirements, including but not limited to regulations, FFAs, RCRA Permits, final or interim RODs, or other equivalent remedial DDs. The Contractor is responsible for implementing changes to the monitoring program based on activities conducted in the Advanced Site Characterization (PWS Section 1.2.7.1), including the addition and decommissioning of wells in the monitoring well network as agreed by all parties and the addition of new delineation monitoring where new information indicates our understanding of the plumes is changed.

Based on technical review of existing site conditions/activities, the AF placed sites in the category of Alternate Objective if one or more of the following conditions exist:

Achieving RC is expected to require substantially longer than 30 years.

Achieving RC is unattainable with standard characterization and/or existing remediation technology due to technical or other limitations related to site conditions.

Achieving RC is anticipated to require advanced site characterization technologies to improve the Conceptual Site Model (CSM), determine appropriate remedial technology, and/or characterize recently regulated contaminants.

The AF will use data and information obtained during execution of this PWS to determine restoration potential and future investment strategies at Alternate Objective sites. Each Sub-Contract Line Item Number (Sub-CLIN) for the Alternate Objective sites will only be awarded if the activities are needed to determine the future investment strategy for the site. The decision to award each Sub-CLIN resides solely at the discretion of the AF.

The Contractor shall conduct project scoping sessions before work plan development and throughout the planning and execution of the project to meet the PO, including the Installation Point(s) of Contact (POC[s]), the AFCEC Program Manager (PM) and Remedial Project Manager (RPM), the AF technical support team, and the Contracting Officer’s Representative (COR). Upon approval by the AF and the COR, the Contractor shall participate in scoping sessions with the regulators as appropriate.

1.2.7.1 Advanced Site Characterization

Based on existing data, the AF has determined that the existing remedial approaches at the Alternative Objective sites are not achieving satisfactory remedial progress toward their intended goals. In order for the AF to determine the best path forward for these sites, the Contractor shall conduct Advanced Site Characterization to collect data to update and refine the CSM in order to achieve the following goals: (1) Fill data gaps; and (2) Collect data needed to: (A) Determine why existing and previous remedial actions are not effective at achieving remedial progress; (B) Determine appropriate remedial technology(ies) based on site conditions; C) Develop remediation design parameters for recommended technology(ies); and D) Determine extent and concentrations of recently regulated contaminants, if required.

Advanced Site Characterization includes one or more of the following three activities: (1) Supplemental Site Investigation (SSI), (2) Revised CSM, and (3) Groundwater Monitoring Program Update.

1.2.7.1.1 Supplemental Site Investigation

The Contractor shall conduct a Supplemental Site Investigation (SSI) to collect data necessary to improve the CSM, determine appropriate remedial technology, support remediation design and construction, and/or characterize recently regulated contaminants. The Contractor shall implement advanced characterization methods, both established approaches and state-of-science techniques consistent with AF, regulatory, Interstate Technology and Regulatory Council (ITRC), and Strategic Environmental Research and Development Program/Environmental Security Technology Certification Program (SERDP/ESTCP) guidance to attain these objectives. Data collection includes better definition of the geology, hydrogeology, geochemistry, and/or source(s) and distribution of COCs, as required. The Contractor shall evaluate the need for, and collect the following data where appropriate: (1) Source Zone Delineation; (2) Source Mass/Extent[footnoteRef:2],[footnoteRef:3],[footnoteRef:4]; (3) Vertical and lateral extent of contamination, if not sufficiently defined; (4) Plume Stability[footnoteRef:5]; (5) Migration pathway, rates, and fluxes in 3-D; (6) Mass distribution; (7) Biogeochemical conditions and influences on contaminant degradation pathways; (8) Impact of recent and historical remedies on site conditions; and (9) Comprehensive Risk including the vapor intrusion pathway. [2: ITRC. (2015). Integrated DNAPL Site Characterization and Tool Selection.] [3: SERDP/ESTCP. (2012). Matrix Diffusion Tool Kit.] [4: USEPA. (2009). Evaluating Natural Source Zone Depletion at Sites with LNAPL.] [5: USEPA. (2014). High Resolution Site Characterization for Groundwater Short Course, 23rd Annual NARPM Training Program.]

The SSI report shall document data collection efforts to include a risk evaluation, if appropriate. The Contractor shall evaluate and provide recommendations regarding whether additional source control is needed or whether the plume, or portions of the plume, are amenable to natural attenuation by conducting source strength and plume stability evaluations as needed.

1.2.7.1.2 Conceptual Site Model

The Contractor shall develop a revised CSM in 3-D to include establishing or updating existing fate and transport models based on existing data and data gathered during the SSI. The CSM should cover the source area and the distal plume, to include the lateral and vertical extent of the contaminants in the context of geologic/hydrogeological parameters and the remedial actions conducted to date.

1.2.7.1.3 Groundwater Monitoring Program Update

The Contractor shall evaluate the current horizontal and vertical well distribution to determine if the following can be properly evaluated:

Remedy performance in treatment areas Hydrogeology, plume geometry, horizontal and vertical plume stability, and matrix diffusion across site Plume migration through use of perimeter/boundary wells and sentinel wells Based on the well network evaluation, coordinated and approved by the Government and regulators (if required), the Contractor shall optimize the monitoring well network to include adjusting sample collection frequency and the addition of new wells as appropriate. The Contractor shall update the Basewide or Site-Specific Monitoring Plan or other equivalent document, as appropriate.

1.2.7.2 Remedy Evaluation and Recommendation

Based on all existing data and data gathered during the Advanced Site Characterization, the Contractor shall evaluate the existing active and/or passive remedy(ies)[footnoteRef:6],[footnoteRef:7],[footnoteRef:8]. The Contractor shall provide recommendations to augment, modify, and/or replace the existing remedy[footnoteRef:9]. The evaluation and recommendations will include a cost-benefit analysis and evaluation of the usability, expandability, and/or discontinued use of any existing infrastructure. All remedy recommendations must include a performance model addressing all COCs and breakdown products. Refer to Section 8.1.3.1, Performance Models. [6: USEPA. (2010). Best Management Practices.] [7: USEPA. (2014). Groundwater Remedy Completion Strategy.] [8: ITRC. (2006). Performance-Based Management.] [9: ITRC. (2010). Use and Measurement of Mass Flux and Mass Discharge.]

Where necessary to evaluate the proposed technology, the Contractor shall conduct pilot-scale technology demonstrations. The Contractor shall identify appropriate remedial technologies and target zones, design/plan, conduct, and evaluate the pilot and/or field scale technology consistent with AF, regulatory, and ITRC guidance. The Contractor shall determine performance monitoring criteria and identify a control sub-site (current state) for comparison and to evaluate results.

In some instances, achievement of RC may not be feasible with currently available technologies within a reasonable timeframe. If this is the case, the Contractor shall develop and evaluate alternatives for site management that will be protective of human health and the environment. If this recommendation is made, it must include the rationale, recommended target when active remediation can cease, and a strategy for obtaining regulatory approval.

1.2.7.2.1 Cost/Benefit Analysis

The Contractor shall provide a cost/benefit analysis for proposed alternatives. Alternatives may include optimizing the remedy in the DD or other remedies with the potential for better performance. All alternatives identified shall be evaluated against one another to determine which alternative can achieve RC in the shortest time and has the lowest overall LCC. The cost/benefit analysis shall include:

· A focused analysis of alternative approaches, to include conceptual designs and engineering cost estimates. The analysis shall identify the total cost of executing the optimized remedy (including the plan and reports).

· An estimate of the reduction of LCC of each alternative evaluated.

· Any risk inherent in implementing the alternative optimized remedy.

· A summary comparison of the LCC and risk of each alternative in a cost/benefit analysis that clearly states the recommended alternative.

1.2.7.3 Decision Document Amendment

Based on the results of the remedy evaluation and recommendation, it may be necessary to amend the DD to augment, modify, and/or replace the existing remedy. If warranted, the Contractor shall update the DD.

Table 1 presents the POs, PPs, and Performance Standards associated with all installations/sites under this ORC. The PP specified in Table 1 starts from the Obligation Date of the first Sub-Contract Line Item Number (CLIN) for the site unless otherwise specified. All approvals (both Government and regulator) per the Performance Standard are required in writing. Additional scope discussion and limits can be found in Section 1.3.2.

Table 1: Performance Table

1) Draft PMP

2) Final PMP

3) Updates as necessary

The PMP should be maintained with accuracy and completeness based on the current technical approach for each site, management structure, etc.

Draft IMS/MPS within 60 calendar days from contract award, Final IMS/MPS within 14 calendar days of receipt of AF and USACE comments on the draft, and updates monthly throughout the POP

AF and USACE approval of IMS/MPS.

SHAW AFB - IRP SITES

Draft CIP or Update within 180 calendar days from Sub-CLIN award; Draft Final CIP or Update within 14 calendar days of receipt of AF comments on the draft; Final CIP or Update within 14 calendar days of approval by the AF.

AF and USACE approval of CIP.

CG038

(AOC O)

RA-O in accordance with the approved CMI Work Plan and RCRA Permit (includes incorporating changes based on revisions to the monitoring program)

Through the duration of the POP

AF, USACE, and regulatory approval of RA-O documentation (e.g., Annual Groundwater Monitoring Reports, Monthly Operations and Maintenance [O&M] Reports, etc.).

AF and USACE approval of Performance Model Evaluation Report.

CG038

(AOC O)

Alternate Objectives:

1) Remedy Evaluation and Recommendation Report / Corrective Measures Study (including results of any pilot study)

2) Revised Statement of Basis/RCRA Permit Modification

3) Updated Corrective Measures Implementation Work Plan

4) System Decommissioning Report, if existing treatment system is not needed or operational.

AF, USACE, and regulatory approval of ESD or ROD Amendment (i.e., Air Force and regulatory signatures on Final ESD or ROD Amendment), including all RCRA equivalents.

AF, USACE, and regulatory approval of System Decommissioning Report.

DP039

(SWMU 101, AOC 32)

FT001

(SWMU 59)

AF and USACE approval of Performance Model Evaluation Report

FT001

(SWMU 59)

Alternate Objectives:

1) Remedy Evaluation and Recommendation Report / Corrective Measures Study (including results of any pilot study)

2) Revised Statement of Basis/RCRA Permit Modification

3) Updated Corrective Measures Implementation Work Plan

4) System Decommissioning Report, if existing treatment system is not needed or operational.

AF, USACE, and regulatory approval of ESD or ROD Amendment (i.e., Air Force and regulatory signatures on Final ESD or ROD Amendment), including all RCRA equivalents.

LF003

(SWMU 58)

LF008

(SWMU 85)

LF009

(SWMU 52)

LTM and Reduce LCC in accordance with the approved CMI Work Plan and RCRA Permit

OT016A

(SWMU 78)

AF and USACE approval of Performance Model Evaluation Report during RA-O.

OT016A

(SWMU 78)

Alternate Objectives:

1) Revised Statement of Basis/RCRA Permit Modification

2) System Decommissioning Report, if existing treatment system is not needed or operational.

OT016B

(AOC F)

RA-O in accordance with the approved CMI Work Plan and RCRA Permit (includes incorporating changes based on revisions to the monitoring program)

AF and USACE approval of Performance Model Evaluation Report during RA-O.

OT016B

(AOC F)

Alternate Objectives:

1) Advanced Site Characterization (Focused Supplemental Site Investigation (SSI), Revised Conceptual Site Model (CSM), and Supplemental Human Health Risk Assessment)

2) Remedy Evaluation and Recommendation Report / Corrective Measures Study (including results of any pilot study plus evaluation of all Well and screen placements)

3) Revised Statement of Basis/RCRA Permit Modification

4) Updated Corrective Measures Implementation Work Plan

5) System Decommissioning Report, if existing treatment system is not needed or operational.

AF and USACE approval of the remedy evaluation and recommended proposed remedial strategy including successful demonstration of the existing or alternate remedy (e.g., through pilot or field test) showing decreasing trends in COCs.

AF, USACE, and regulatory approval of ESD or ROD Amendment (i.e., Air Force and regulatory signatures on Final ESD or ROD Amendment), including all RCRA equivalents.

OT016C

(AOC D)

AF and USACE approval of Performance Model Evaluation Report.

OT016D

(AOC W)

SD033

(SWMU 96)

RA-O in accordance with the approved CMI Work Plan and RCRA Permit

Through the duration of the POP

AF, USACE, and regulatory approval of RA-O documentation (e.g., Annual Groundwater Monitoring Reports, Monthly Operations and Maintenance [O&M] Reports, etc.).

SD033

(SWMU 96)

Alternate Objectives:

1) Remedy Evaluation and Recommendation Report / Corrective Measures Study (including results of any pilot study)

2) Revised Statement of Basis/RCRA Permit Modification

AF, USACE, and regulatory approval of ESD or ROD Amendment (i.e., Air Force and regulatory signatures on Final ESD or ROD Amendment), including all RCRA equivalents.

SS015

(SWMU 2)

Black Hole Area – POL Yard

SS015

(SWMU 2)

Black Hole Area – POL Yard Alternate Objectives:

1) Advanced Site Characterization (Supplemental Site Investigation (SSI), Revised Conceptual Site Model (CSM), and Supplemental Human Health Risk Assessment

2) Remedy Evaluation and Recommendation Report / Corrective Measures Study (including results of any pilot study)

3) Revised Statement of Basis/RCRA Permit Modification

4) Updated Corrective Measures Implementation Work Plan

AF and USACE approval of the remedy evaluation and recommended proposed remedial strategy including successful demonstration of the existing or alternate remedy (e.g., through pilot or field test) showing decreasing trends in COCs.

AF, USACE, and regulatory approval of ESD or ROD Amendment (i.e., Air Force and regulatory signatures on Final ESD or ROD Amendment), including all RCRA equivalents.

SS035

(AOC H)

SS035

(AOC H)

Alternate Objectives:

1) Advanced Site Characterization (Focused Supplemental Site Investigation (SSI), Revised Conceptual Site Model (CSM), and Supplemental Human Health Risk Assessment)

2) Remedy Evaluation and Recommendation Report / Corrective Measures Study (including results of any pilot study plus evaluation of all Well and screen placements)

3) Revised Statement of Basis/RCRA Permit Modification

4) Updated Corrective Measures Implementation Work Plan

5) System Decommissioning Report, if existing treatment system is not needed or operational.

AF and USACE approval of the remedy evaluation and recommended proposed remedial strategy including successful demonstration of the existing or alternate remedy (e.g., through pilot or field test) showing decreasing trends in COCs.

AF, USACE, and regulatory approval of ESD or ROD Amendment (i.e., Air Force and regulatory signatures on Final ESD or ROD Amendment), including all RCRA equivalents.

SS036

(AOC N)

SS036

(AOC N)

Alternate Objectives:

1) Advanced Site Characterization (Focused Supplemental Site Investigation (SSI), Revised Conceptual Site Model (CSM), and Supplemental Human Health Risk Assessment)

2) Remedy Evaluation and Recommendation Report / Corrective Measures Study (including results of any pilot study plus evaluation of all Well and screen placements)

3) Revised Statement of Basis/RCRA Permit Modification

4) Updated Corrective Measures Implementation Work Plan

AF and USACE approval of the remedy evaluation and recommended proposed remedial strategy including successful demonstration of the existing or alternate remedy (e.g., through pilot or field test) showing decreasing trends in COCs.

AF, USACE, and regulatory approval of ESD or ROD Amendment (i.e., Air Force and regulatory signatures on Final ESD or ROD Amendment), including all RCRA equivalents.

ST018

(SWMU 87)

Response Complete (RC)

Upon achievement of RC, continue Long Term Management (LTM) in accordance with the approved CMI Work Plan and RCRA Permit throughout the duration of the POP

Seven (7) years

AF, USACE, and regulatory approval of RC documentation (e.g., Regulator approval of, and Air Force signature on, Final Remedial Action Completion Report).

AF, USACE, and regulatory approval of LTM documentation (e.g., Land Use Control Inspection Reports).

ST018

(SWMU 87)

ST030

(AOC M)

Response Complete (RC)

Upon achievement of RC, continue Long Term Management (LTM) in accordance with the approved CMI Work Plan and RCRA Permit throughout the duration of the POP

Seven (7) years

AF, USACE, and regulatory approval of RC documentation (e.g., Regulator approval of, and Air Force signature on, Final Remedial Action Completion Report).

AF, USACE, and regulatory approval of LTM documentation (e.g., Land Use Control Inspection Reports).

ST030

(AOC M)

Alternate Objectives:

1) Remedy Evaluation and Recommendation Report / Corrective Measures Study (including results of any pilot study)

2) Revised Statement of Basis/RCRA Permit Modification

3) Updated Corrective Measures Implementation Work Plan

4) System Decommissioning Report, if existing treatment system is not needed or operational.

AF, USACE, and regulatory approval of ESD or ROD Amendment (i.e., Air Force and regulatory signatures on Final ESD or ROD Amendment), including all RCRA equivalents.

SHAW AFB - DLA SITES

Bldg. 1200

(SWMU 98)

AF and USACE approval of Performance Model Evaluation Report.

Bldg. 1200

(SWMU 98)

Alternate Objectives:

1) Remedy Evaluation and Recommendation Report / Corrective Measures Study (including results of any pilot study)

2) Revised Statement of Basis/RCRA Permit Modification

3) Updated Corrective Measures Implementation Work Plan

4) System Decommissioning Report, if existing treatment system is not needed or operational.

AF, USACE, and regulatory approval of ESD or ROD Amendment (i.e., Air Force and regulatory signatures on Final ESD or ROD Amendment), including all RCRA equivalents.

Bldg. 1610 & Bldg. 1612

(SWMU 99)

AF and USACE approval of Performance Model Evaluation Report.

Bldg. 1610 & Bldg. 1612

(SWMU 99)

Alternate Objectives:

1) Remedy Evaluation and Recommendation Report / Corrective Measures Study (including results of any pilot study)

2) Revised Statement of Basis/RCRA Permit Modification

3) Updated Corrective Measures Implementation Work Plan

4) System Decommissioning Report, if existing treatment system is not needed or operational.

AF, USACE, and regulatory approval of ESD or ROD Amendment (i.e., Air Force and regulatory signatures on Final ESD or ROD Amendment), including all RCRA equivalents.

* The Performance Period is from the date of award of the first performance Sub-CLIN.

1.3.2 Additional Scope Discussion and Limits

In addition to the requirements identified in Table 1, the Contractor shall be responsible for:

1. Operations and Maintenance (O&M) of all remediation equipment to include all wells associated with requirements in this PWS and well abandonment with AF, USACE, and regulatory approval (if required) when the well is no longer necessary.

0. Keeping systems operating as intended throughout the contract PoP. If a system becomes non-operational, the Contractor shall submit, in writing, the plan to get the system operating again to the Installation POC within 10 days. The plan shall include the timeline for repairs.

· For sites SS035 and SS036, evaluate performance (includes compliance sampling) of and complete reporting for the air strippers at Base drinking water wells 3, 4, and 5.

i. The Contractor shall develop an Operations Recommended Upgrades report based on the performance evaluation. Base Operations will implement any recommended changes from this report.

ii. Monthly sampling and quarterly reporting of influent/effluent water at the Base drinking water wells 3, 4, and 5 is required in order to determine air stripper effectiveness or any recommended upgrades. Any sampling result at the applicable limit shall be reported immediately.

For OT016B, SS035, and SS036 replace Caustic Soda Tank at GWTP1.

a. Establishing a quality control/quality assurance process to ensure documents are of an acceptable quality and do not contain typos, formatting issues, contradictory information in tables and text, etc.

b. Contaminants for which there are promulgated federal, state, or local standards.

c. Conducting 1,4-Dioxane investigations as described in “Interim Air Force Guidance on Sampling and Response Actions for 1,4-Dioxane at Operational and [Base Realignment and Closure] BRAC Installations,” dated 24 May 2013. The Contractor shall present results in one Tech Memo/Report per installation documenting the analytical methods and maps depicting sampling locations within the trichloroethene (TCE) plume and sample analysis results.

· 1,4 Dioxane Memo Steps 1 and 2 have been completed.

· 1,4 Dioxane Compliance monitoring is required at OT016C (AOC D) and SS035 (AOC H) by SCDES.

· 1,4 Dioxane Memo Step 3 is required at OT016C (AOC D) and SS035 (AOC H) by AF Policy/Regulations.

Manage and dispose of investigation-derived waste (IDW) media associated with PFAS in accordance with AF Guidance Memorandum “Interim Guidance on Destruction or Disposal of Materials Containing Per- and Polyfluoroalkyl Substances in the United States” dated 11 July 2023, AF Guidance Memorandum “Guidance on Incineration of Materials Containing Per- and Polyfluoroalkyl Substances” dated 14 July 2023, and Section 4.14.2 of this document. The following sites are validated PFAS sites; therefore, the Contractor shall test waste media for PFAS and dispose of it in accordance with the guidance.

· FT001P-SUB, FT006P-SUB, and FT007P-SUB.

d. The Contractor shall test IDW for PFAS using EPA test method 1633 as required for waste acceptance at the following sites:

· DP039, FT001, OT016A, OT016B, SS035, and SS036.

The contractor shall conduct PFAS sampling associated with water treatment systems GWTP1: OT016B, SS035, and SS036; and GWTP2: FT001P-SUB, FT006P-SUB, FT007P-SUB. The contractor is responsible for the O&M of the entire system, including the retro fitted portion and all media changeouts necessary. The contractor shall test influent, mid, and effluent samples for PFAS with an evaluation to determine when a media change out would be required at these sites.

Within nine months from contract award, the Contractor shall complete a one-time sampling event of all extraction wells for GWTP1- which will require development of a Sampling plan to determine the best way to grab the samples. Once the sampling has been accomplished, then a Technical Memorandum will be developed for each site with the sampling results and data gap recommendations for AF review and approval.

e. Ensuring that remedial actions do not negatively impact the distribution of any other contaminants and/or emerging contaminants (e.g., PFAS, 1,4-dioxane).

f. Conducting RAB-interest assessments and meetings; performing community outreach activities; and preparing CIPs or Updates as described in sections 4.6.1, 4.6.2, and Enclosure 4.

g. The Contractor shall prepare and submit the RCRA Hazardous and Solid Waste Amendments (HSWA) permit renewal application.

· The contractor will be responsible for paying any fees associated with the permit renewal or modifications, as well as issuing required public notices.

· Two public meeting announcements are required for renewal or modification of the RCRA HSWA permit.

h. Conduct Annual Basewide Well Surveys, Well Inventory…