Statement of Work.docx

CERCLA SOW

USDA AGRICULTURAL RESEARCH SERVICE

BELTSVILLE AREA

BELTSVILLE, MARYLAND

BARC CERCLA PROGRAM ONGOING OBJECTIVES SCOPE OF WORK (SOW)

February 2025

SOW OBJECTIVES

The objective of this SOW is to provide support to USDA ARS with several aspects of the Beltsville Agricultural Research Center (BARC) Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) program to meet its regulatory obligations as set forth under the 1998 Federal Facilities Agreement (FFA) between the Environmental Protection Agency (EPA) and USDA ARS.

Specifically, the objectives of this SOW include these tasks:

· Task 1: PROGRAM SUPPORT SERVICES

· Task 2: BARC 27 - BEAVERDAM ROAD LANDFILL ENHANCEMENT AND PERFORMANCE MONITORING

· Task 3: ANNUAL SAMPLING (INCLUDING TCRA PERFORMANCE MONITORING & AIRPORT AOCS) The SCOPE OF WORK and TASKS are provided in more detail below.

SCOPE OF WORK

The Contractor shall furnish all services, materials, supplies, labor, equipment, superintendence, and travel and administrative reports and plans as required, related to the work described herein. The Contractor shall have a full understanding of all work completed to date, feedback and coordination from all regulatory authorities, and documentation and meeting minutes to date. The Contractor shall provide evidence of its experience with regulatory authorities with similar work to ensure no impact to ARS’ progress to date. Tasks are outlined below.

TASK 1. PROGRAM SUPPORT SERVICES

TASK OBJECTIVES

The objective of this SOW task is to provide support to USDA ARS with management aspects of the Beltsville Agricultural Research Center (BARC) Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) program to meet its regulatory obligations as set forth under the 1998 Federal Facilities Agreement (FFA) between the Environmental Protection Agency (EPA) and USDA ARS.

The SOW SUBTASKS are provided in more detail below.

SOW SUBTASKS

Subtask 1 - SITE MANAGEMENT PLAN UPDATE The SMP describes and establishes all procedures and ARS priorities for the CERCLA program and is updated annually. The SMP shall be updated to the 2025 version including changes in projected schedules for investigation and cleanup activities. The SMP shall be prepared following the FFA between ARS and EPA, Section XI (https://cercla.ba.ars.usda.gov).

This task will consist of the following elements:

· Reviewing and revising the status and projected schedules of all active CERCLA projects at BARC. The Contractor shall provide general recommendations for schedule priorities to cover activities in the years following the period covered by the current SMP document.

· The Contractor shall provide an Internal Draft SMP for review by ARS.

· The Contractor shall address comments received on the Internal Draft and shall submit a Draft SMP for EPA review.

· The Contractor shall work with ARS and EPA to address all comments received on the Draft SMP and shall issue a Final SMP.

The Contractor shall provide the final SMP submittal in both hard copies and electronically as an Adobe pdf document. A digital (pdf) version will be inserted into the IR and the BARC CERCLA website (https://cercla.ba.ars.usda.gov).

Subtask 2 - EPA CERCLA PROGRAM MEETING SUPPORT – SCRIBE The FFA governs CERCLA response at BARC and requires program meetings. ARS and EPA have historically implemented quarterly meetings to discuss ongoing Remedial Investigations, risk assessment and management, technical issues, schedules, guidance, and procedures.

Meetings previously were alternately held at BARC and EPA Region III offices in Philadelphia. Since 2018 no meetings have been held in Philadelphia. Therefore, assume only one (1) joint ARS/EPA meeting will be held at BARC that will include a site tour. Starting in 2018, ARS and EPA commenced a bi-weekly conference call with active contractors to address CERCLA AOC program issues outside of the quarterly meeting process to expedite progress. The Contractor should have the means to utilize the MS TEAMS format for virtual meetings.

The Contractor shall provide BARC with a ‘scribe’ for one years’ worth of meetings including approximately 26 bi-weekly conference calls.

The Contractor shall provide a scribe to support ARS’s and EPA meetings, the scribe’s responsibility shall be as follows:

· Agenda Preparation (format to be provided by BARC) – the draft agenda shall be based on the previous meeting minutes and unresolved issues. The draft shall be sent out not later than three days before the scheduled meeting so that changes and modifications of the agenda may be facilitated with input from EPA/ARS and the contractor(s). The final bi-weekly agenda and quarterly agenda shall be provided by email the day before the meeting. Not all meetings may require the participation of all BARC contractors to be present.

· Meeting Minutes - The scribe shall take notes and not participate in the meeting. They shall not be in a support role for any of the AOCs under consideration that would require their direct participation.

· Draft Meeting Minutes - The scribe shall provide draft minutes within seven (7) calendar days of the previous conference call.

· Final Meeting Minutes - The scribe shall provide final meeting minutes with all comments incorporated with the next draft meeting agenda.

The Contractor shall schedule and coordinate meetings. Topics shall be solicited from all participants suggest topics for inclusion and discuss them in advance with the ARS RPM and develop appropriate materials for distribution to ARS and EPA Region III. Deliverables include the preparation of meeting agendas and minutes to be distributed to all attendees. Meeting minutes include decisions made and provide a record of commitments by the parties. A meeting agenda shall be developed in advance of each meeting. After each meeting and conference call, minutes shall be prepared in the draft and provided to the ARS RPM for review to document the discussions and identify action items. Upon approval, meeting minutes shall be distributed to all attendees electronically and provided to the AR for inclusion.

Subtask 3 - BARC CERCLA PROGRAM SUPPORT The Contractor shall provide environmental program support related to technical issues that are outside of specific projects or AOCs currently being investigated. This supplemental support provides limited ‘ad hoc’ services related to the following categories listed below:

· Providing technical and regulatory support to ARS related to the BARC CERCLA program;

· Providing IT technical support to update and maintain the IR/AR public facing website.

· Responding to questions and/or information requests on human health and/or ecological risk from EPA or ARS as necessary;

· Track existing or developing regulatory requirements that may impact the BARC CERCLA Program;

· Supporting, preparing, and submitting site closeout reports

· Providing professional technical analysis and advice;

· Collect, copy, and/or transmit technical information, relevant data, or technical documents as requested;

· Providing support to the ARS Program on emerging issues, public communications, and third-party technical evaluations.

· Providing site-specific and programmatic background information on CERCLA activities at BARC.

· Supporting meetings and conference call on technical or decision-making topics. (The need for such meetings and supplementary support e.g., scribe, agenda, minutes, etc. should be evaluated on a case-by-case basis.)

· Developing, reviewing, or responding to comments for SSP sites or other CERCLA deliverables.

This task shall be supported by mid to senior-level scientists and engineers with CERCLA experience for not more than a period of 1 ‘ full-time equivalent’ (FTE) for 10 (10) weeks.

Subtask 4 - Fact Sheet and Mapping Update

This task requires the annual update of nine (9) fact sheets, available to the public on the ARS internal and public-facing web page. These documents provide the foundational outreach material used for public meetings. The Contractor shall provide the ARS BARC Information Staff with an update of activities that have occurred, and progress made at BARC during the preceding year. Information provided for review includes updating fact sheets and revising a full-size map of BARC AOC status. The Contractor shall prepare all Fact Sheets in draft form for review by the ARS RPM. Any comments and edits shall be addressed, and final Fact Sheets uploaded to the online IR/AR.

The BARC site map is updated annually. This task shall include updating the map with AOC site status changes using the existing color-coding to indicate BARC’s site investigation and cleanup progress. The Contractor shall deliver an electronic version (pdf) and full-size (11x17 inches) paper copy to the ARS RPM and shall also upload the electronic version to the IR/AR.

Subtask 5 – Master Risk Assessment Plan Update

The Contractor shall update the master risk assessment plan foe new risk assessment data, the UFP-QAPP, and in accordance with EPA comments. The draft MRAP shall be submitted for ARS and EPA review. Upon receipt of comments, an RTC for all comments shall be prepared for ARS and EPA review. Upon concurrence, the MRAP shall be finalized.. Upon completion and approval by ARS and EPA, the report shall be provided for entry into the IR/AR website (https://cercla.ba.ars.usda.gov) and a hard copy entered into the physical data repository.

Subtask 6 – UPF-QAPP Conversion

The Contractor shall review and update the Master QAPP to conform with the UFP-QAPP. The draft UFP-Style update shall be submitted for ARS and EPA review. Upon receipt of comments, an RTC for all comments shall be prepared for ARS and EPA review. Upon concurrence, the document shall be finalized.. Upon completion and approval by ARS and EPA, the report shall be provided for entry into the IR/AR website (https://cercla.ba.ars.usda.gov) and a hard copy entered into the physical data repository.

GOVERNMENT-FURNISHED INFORMATION

ARS maintains all previous and necessary decision documents that are uploaded to the BARC Information Repository (https://cercla.ba.ars.usda.gov) & (https://cercla.ba.ars.usda.gov/glenndale) when approved. Documents may be downloaded for this task from these sites.

The following data will be provided to the Contractor by ARS:

· Previous Site Management Plan

· Deliverables and Remedial Milestones Schedule

SCHEDULE OF DELIVERABLES

The Contractor shall provide an electronic copy and hard copy(s) of each deliverable as outlined below.

COR

COR

COR

COR

COR

COR

COR

Prior to final invoice the contract, the contractor shall supply all contract related documents and data to the COR in a common format via electronic delivery or flash drive.

TASK 2. BARC 27 - BEAVERDAM ROAD LANDFILL BIO WALL SUPPORT AND PERFORMANCE MONITORING

Task OBJECTIVES

The objective of this task is to obtain continued support to evaluate the remedy of a ‘Bio Wall’ installed at the Beaverdam Road Landfill (BDRLF) site to treat contaminated groundwater at the Beltsville Agricultural Research Center (BARC). These tasks are necessary to support the BARC Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA, or Superfund) program following the Federal Facility Agreement (FFA) signed by both ARS and EPA.

Requirements associated with this task consist of:

· Monitoring, maintaining, and assessing the performance of installed remedy enhancements, including a report on the effectiveness of the implemented measures over time.

· Maintaining Remedies including required Land Use Controls (LUCs) by the approved Land Use Control Implementation Plan (LUCIP).

· Conducting quarterly monitoring of the monitoring well network and evaluating overall Bio wall performance.

· Preparing a full report on remedy enhancements and Bio wall performance and updating the Performance Management Plan (PMP) for Year 10.

Tasks are outlined below in SOW Subtask.

SOW Subtasks

Subtask 1 – BARC 27 – BEAVERDAM ROAD LANDFILL LAND USE CONTROL MEASURES MAINTENANCE

PART 1 Land Use Control Measures, Maintenance and Monitoring The BDRLF ROD stipulated the implementation of LUCs via the LUCIP for the remedy and is required by CERCLA. The Contractor shall continue to support ARS in maintaining and monitoring its provisions. These activities are coordinated with EPA, the ARS RPM, ARS Management, Real Property, External Services and Research Farm Services, Office of General Counsel, and the Contracting Officers Representative (COR). In 2018 new fencing and signage were installed to meet CERCLA requirements of the ROD, by the LUCIP. Additional activities for the next year include:

· Document implemented LUC measures in quarterly Bio wall monitoring reports.

· Conduct routine site inspections every quarter for four quarters, and complete the FY24 annual site inspection, checklists, and reports required by EPA and the LUCIP. The Contractor shall advise ARS when LUCs are observed to need repair and provide a recommended repair action. When approved by ARS the contractor will execute the repair action.

· Complete any additional requirements required by the Remedial Action Completion Report (RACR).

· Ensure that LUC documents are retained and inserted into the BARC CERCLA Information Repository (IR).

PART 2 Site Maintenance and Additional Specific Sampling The Contractor shall identify and complete minor site maintenance at the Bio wall site to ensure site security, continued effectiveness of site sediment and erosion control measures, and continued access to the Bio wall and associated monitoring wells in all weather conditions. Site maintenance activities shall be documented in quarterly monitoring reports and shall include:

· Routine site inspections,

· Maintenance of existing sediment and erosion control measures,

· Ensuring site security and fencing/locks are in good working order,

· Evaluating and advising ARS of observed safety issues (e.g., a tree fall, vandalism),

· Re-grading the site entrance and interior access to address ruts and prevent tracking mud from vehicles.

Upon completion and approval by ARS and EPA, any reports prepared shall be provided for entry into the Information Repository/Administrative Record (IR/AR) website (https://cercla.ba.ars.usda.gov) and a hard copy entered into the physical data repository. Analytical electronic data deliverables (EDDs) shall be provided to ARS for the BARC database.

Subtask 2 BIO WALL PERFORMANCE MONITORING (YEAR 11) (Including Cobalt and CrVI+ sampling)

Current Bio wall Performance Monitoring sampling and analytical tasks were developed immediately after the installation of the Bio wall in 2013 as required to meet EPA requirements to demonstrate efficacy. This information is reported annually and summarized in a CERCLA mandated 5-yr review of all implemented remedies implemented at the time of the 5-yr review. The PMP is currently being updated, and in addition to the specific sample collections below the contractor shall also sample for Cobalt and CrVI+ in groundwater

PART 1 Semi-Annual Bio wall Monitoring The Contractor shall complete two (2) semi-annual Bio wall performance monitoring events following the updated PMP. The semiannual monitoring events shall include the following:

Well Gaging Before the initiation of groundwater sampling, the Contractor shall complete a site-wide gaging event. The results shall be used to generate a groundwater potentiometric surface map for the site and shall allow for the evaluation of water levels within the Bio wall.

Groundwater Sample Collection Groundwater samples shall be collected from the ten (10) Bio wall wells using low-flow sampling techniques. Groundwater samples shall be submitted for laboratory analysis of volatile organic compounds (VOCs) via method 8260B, methane, ethane, and ethene via method RSK-175, and iron via method 6010B, total CaCO3 alkalinity via method SM2320B, Total Organic Carbon via method SW9060, sulfate via method SW9056. Additionally, the contractor shall conduct additional analysis for ferrous iron in the field using a ferrous iron test kit and shall submit up to four (4) Bio wall groundwater samples for fixed laboratory analysis of ferrous iron via EPA Method fe-B-11. The Contractor shall submit groundwater samples from select upgradient RI wells for laboratory analysis of sulfate via method SW9056 to gain a better understanding of natural sulfate concentrations at the site. The Contractor shall collect water quality data including dissolved oxygen, temperature, salinity, pH, specific conductivity, ORP, and turbidity.

Groundwater samples shall be collected from the seven (7) transect wells using low-flow sampling techniques. Groundwater samples shall be submitted for laboratory analysis of VOCs via EPA Method 8260B and methane, ethane, and ethene via method RSK-175. Field measurements shall be collected from each transect well. The upgradient transect well TW6 shall be sampled for sulfate to serve as a comparison between sulfate concentrations within upgradient groundwater and in groundwater within the Bio wall.

Semi-Annual Monitoring Report A monitoring report shall be prepared to present the results of each quarterly monitoring event. The report shall present the results of the Bio wall wells and transect wells and shall focus on assessing conditions within the Bio wall. The report shall include figures and tables to supplement the presentation of Bio wall conditions. All data shall be validated by the requirements of the BARC QAPP and shall be tabulated and detected analytes shall be presented in the report.

Upon completion and approval by ARS and EPA, the report shall be provided for entry into the Information Repository/Administrative Record (IR/AR) website (https://cercla.ba.ars.usda.gov) and a hard copy entered into the physical data repository. Analytical electronic data deliverable (EDD) shall be provided to ARS for the BARC database.

PART 2 Annual Bio wall Monitoring The Contractor shall complete one (1) annual comprehensive surface water and groundwater quality monitoring event at the BDRLF by the updated PMP. The Contractor shall conduct surface water quality monitoring at four (4) locations within the unnamed tributary of Beaverdam Creek and groundwater quality monitoring at all existing monitoring wells including the 12 RI wells, the 10 Bio wall monitoring wells, and 7 transect wells. These comprehensive annual groundwater sampling events shall follow the requirements of the QAPP and be completed in coordination with semi-annual monitoring events. The annual monitoring events shall include the following:

Well Gauging Before the initiation of groundwater sampling, the Contractor shall complete a site-wide gauging event. The results of the gauging event shall be used to generate a groundwater potentiometric surface map for the site and shall allow for the evaluation of water levels within the Bio wall.

Groundwater Sample Collection Groundwater samples shall be collected from the twelve (12) existing monitoring wells using passive diffusion bag (PDB) samplers. Groundwater samples shall be submitted for laboratory analysis of VOCs via EPA Method 8260B. Groundwater physical parameters collected from the existing monitoring wells shall be limited to the measurement of temperature and dissolved oxygen.

Groundwater samples shall be collected from the ten (10) Bio wall wells using low-flow sampling techniques. Groundwater samples shall be submitted for laboratory analysis of VOCs via Method 8260B, methane, ethane, and ethene via method RSK-175, and iron and manganese via method 6010B, total CaCO3 alkalinity via method SM2320B, Total Organic Carbon via method SW9060, sulfate via method SW9056. The contractor shall collect water quality data including dissolved oxygen, temperature, salinity, pH, specific conductivity, ORP, and turbidity.

Groundwater samples shall be collected from the seven (7) transect wells using low-flow sampling techniques. Groundwater samples shall be submitted for laboratory analysis of VOCs via EPA Method 8260B and methane, ethane, and ethene via method RSK-175. Field measurements shall be collected from each transect well. Sulfate shall be collected from the upgradient transect well TW6.

PART 3 Surface Water Sample Collection Surface water samples shall be collected from four (4) locations within the unnamed tributary to Beaverdam Creek. Surface water samples shall be submitted for laboratory analysis of VOCs via EPA Method 8260B. Field measurements, including dissolved oxygen, temperature, salinity, pH, specific conductivity, ORP, and turbidity shall also be collected from each surface water monitoring location.

PART 4 Annual Monitoring Report A monitoring report shall be prepared to present the results of each annual monitoring event. The report shall present the results of the Bio wall well and transect well results and shall focus on assessing conditions within the Bio wall and on Bio wall performance. The report shall include figures and tables to supplement the presentation of Bio wall conditions and performance. All data shall be validated by the requirements of the QAPP. All detected analytes shall be tabulated and presented in the report.

Upon completion and approval by ARS and EPA, the report shall be provided for entry into the Information Repository/Administrative Record (IR/AR) website (https://cercla.ba.ars.usda.gov) and a hard copy entered into the physical data repository. Analytical electronic data deliverable (EDD) shall be provided to ARS for the BARC database.

GOVERNMENT-FURNISHED INFORMATION

ARS maintains all previous and necessary decision documents that when approved are uploaded to the BARC Information Repository (https://cercla.ba.ars.usda.gov). The Contractor may download the following documents for this task from this site.

· Final deliverables associated with BARC 27 AOC

SCHEDULE OF DELIVERABLES

The Contractor shall provide an electronic copy and hard copy(s) of each deliverable as outlined below.

COR

COR

COR

Prior to final invoice the contract, the contractor shall supply all contract related documents and data to the COR in a common format via electronic delivery or flash drive.

TASK 3. ANNUAL SAMPLING (INCLUDING TCRA PERFORMANCE MONITORING)

TASK OBJECTIVES

The objective of this task is to complete the annual groundwater and/or surface water sampling investigations at the Chemical Disposal Pits (BARC 12), College Park Landfill (BARC 22), Former PCB Storage (BARC 32), and Former Coal Storage Area (EPIC 7 & 8) following the Federal Facilities Agreement (FFA). In addition, this task includes the completion of performance monitoring for BARC 32 TCRA. This activity supports the Beltsville Agricultural Research Center (BARC) Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) program.

The Contractor shall have a full understanding of all work completed to date, feedback and coordination from all regulatory authorities, and documentation and meeting minutes to date, including the Master Quality Assurance Project Plan (QAPP), Master Health and Safety Project Plan (HASP), BARC 32 Performance Monitoring Plan (PMP), and the Investigation Derived Waste (IDW) Plan. All reporting shall describe how the data support BARC’s compliance and investigative goals as outlined in the Site Management Plan (SMP).

The Contractor shall utilize the existing Comprehensive Annual Monitoring Work Plan and BARC 32 PMP.

The Contractor shall provide evidence of its experience with regulatory authorities with similar scopes of work to ensure no impact to ARS’ progress to date. Tasks are outlined below in SOW SUBTASKS.

SOW SUBTASKS

Subtask 1 –Chemical Disposal Pits (BARC 12) Annual Groundwater and Surface Water Sampling, and PFOS Sampling of Selected Wells

The Contractor shall complete all sampling following the requirements below. All sampling shall conform to the Master QAPP requirements, including QA/QC sampling requirements and data validation levels.

Part 1 – Sampling Program The Contractor shall follow the sampling procedures as summarized in the Comprehensive Annual Monitoring Program Work Plan. Specifically, sampling procedures include gauging all existing monitoring wells and Continuous Multichannel Tubing (CMT) wells before sampling and develop a piezometric map of the site, including groundwater flow direction and calculation of representative horizontal and vertical flow rates. Groundwater samples shall be collected by the approved Work Plan using EPA low flow sampling methods; surface water samples will be collected using dip samplers. Water quality (e.g., dissolved oxygen, conductivity, oxidation-reduction potential [ORP], pH) data shall be collected and recorded as part of the sampling process for each groundwater, surface water, and seep sample location.

The contractor shall sample and provide chemical analysis for all 22 well locations, including those wells with multiple sampling elevations, for Target Compound List (TCL) volatile organic compounds (VOCs), semivolatile organic compounds (SVOCs); including 1,4-dioxane, organochlorine (OC) pesticides, and Target Analyte List (TAL) total and dissolved metals (including mercury). Monitoring wells BA12-MW1 and BA12-MW17 and surface water samples from the wetland area will be analyzed for PFAS in 2023. Well-sampling and data management procedures must follow protocols developed by EPA and Ft. Meade to ensure data is of acceptable quality. All PFAS data shall be validated, and a validation report provided following Level IV validation requirements.

Part 2 – Reporting The Contractor shall follow the reporting procedures as summarized in the Work Plan. Specifically, following sampling and receipt of laboratory data, the Contractor shall prepare a summary of results for ARS review. The laboratory data will be tabulated and validated by the Master QAPP. Sampling results will be compared against Regional Screening Levels (RSLs) and Preliminary Remediation Goals (PRGs). Surface water data will be compared to Ambient Water Quality Criteria.

The Contractor shall prepare the draft BARC 12 Annual Monitoring Report for ARS and EPA review. Upon receipt of comments, an RTC for all comments will be prepared for ARS and EPA review. Upon concurrence, the BARC 12 Annual Monitoring Report shall be finalized. The report shall follow the format of previous annual reports. Upon completion and approval by ARS and EPA, the report shall be provided for entry into the IR/AR website (https://cercla.ba.ars.usda.gov) and a hard copy entered into the physical data repository. Analytical electronic data deliverables (EDDs) shall be provided to ARS for the BARC analytical database.

Part 3 - Data Transfer Support The Contractor shall support the data transfer of BARC 12 analytical data to allow the completion of the Proposed Remedial Action Plan (PRAP) and Record of Decision (ROD).

Subtask 2 – College Park Landfill (BARC 22) Annual Groundwater and Surface Water Sampling

The Contractor shall complete all sampling following the requirements below. All sampling shall conform to the Master QAPP requirements, including QA/QC sampling requirements and data validation levels.

Part 1 – Sampling Program The Contractor shall follow the sampling procedures as summarized in the Comprehensive Annual Monitoring Program Work Plan. Specifically, sampling procedures include gauging each existing monitoring well before sampling and develop a piezometric map of the site. Groundwater samples shall be collected by the approved Work Plan using EPA approved low flow sampling methods for each of the 14 existing monitoring wells. Surface water samples shall be collected from six (6) locations (i.e., one [1] upstream and five [5] site reach and downstream) along Beaverdam Creek. Samples from three (3) shallow pre-packed ‘seep’ wells in the wetland area shall also be collected. Water quality data shall be collected and recorded as part of the sampling process for each well, surface water, and seep location. The collected samples shall be analyzed for TCL VOCs and TAL metals (total and dissolved).

One downgradient monitoring well (BA22-MW12), One upgradient monitoring well (BA22-MW01), the most upgradient and most downgradient surface water sample locations, and the three seep wells shall be analyzed for PFAS. Well sampling and data management protocols must follow sampling protocols developed by EPA and Ft. Meade to ensure data is of acceptable quality. All PFAS data shall be validated and include a validation report prepared following Level IV validation requirements.

Part 2 – Reporting The Contractor shall follow the reporting procedures as summarized in the Work Plan. Specifically, following sampling and receipt of laboratory data, the Contractor shall prepare a summary of results for ARS. The laboratory data will be tabulated and validated following the Master QAPP. Sampling results will be screened against RSLs and PRGs. Data for the monitoring wells included in the Human Health Risk Assessment (HHRA) will be screened and presented separately for exceedances. Surface water data will be compared to Ambient Water Quality Criteria.

The Contractor shall prepare the draft BARC 22 Annual Monitoring Report for ARS and EPA review. Upon receipt of comments, an RTC for all comments shall be prepared for ARS and EPA review. Upon concurrence, the BARC 22 Annual Monitoring Report shall be finalized. The report will follow the format of previous annual reports. Upon completion and approval by ARS and EPA, the report shall be provided for entry into the IR/AR website (https://cercla.ba.ars.usda.gov) and a hard copy entered into the physical data repository. Analytical EDDs shall be provided to ARS for the BARC analytical database.

Part 3 - Data Transfer Support The Contractor shall support the data transfer of BARC 22 water quality analytical data to allow the completion of the PRAP and ROD.

Subtask 3 – Former Coal Storage Area (EPIC 7 & 8 ) Groundwater Sampling

The Contractor shall complete all sampling following the requirements below. All sampling shall conform to the Master QAPP requirements, including QA/QC sampling requirements and data validation levels.

Part 1 – Sampling Program The Contractor shall follow the sampling procedures as summarized in the Comprehensive Annual Monitoring Program Work Plan. Specifically, sampling procedures include gauging all existing monitoring wells at EPIC 7 & 8 before sampling and develop a piezometric map. The Contractor shall sample the four existing monitoring wells and three surface water samples from the adjacent creek, one of which shall be upstream of the site. Groundwater samples shall be collected by the approved Work Plan using EPA-approved low flow sampling methods. Water quality data shall be collected and recorded as part of the sampling process for each well, surface water, and seep location. The collected samples shall be analyzed for the SVOCs and TAL metals.

Part 2 – Reporting The Contractor shall follow the reporting procedures as summarized in the Work Plan. Specifically, following sampling and receipt of laboratory data, the Contractor shall prepare a summary report of results for ARS. The laboratory data will be tabulated and validated by the Master QAPP. Sampling results shall be screened against RSLs and PRGs.

The Contractor shall prepare the draft EPIC 7 & 8 Groundwater Monitoring Report for ARS and EPA review. Upon receipt of comments, an RTC for all comments shall be prepared for ARS and EPA review. Upon concurrence, the EPIC 7 & 8 Groundwater Monitoring Report shall be finalized. The report shall follow the format of other annual reports.

Upon completion and approval by ARS and EPA, the report shall be provided for entry into the IR/AR website (https://cercla.ba.ars.usda.gov) and a hard copy entered into the physical data repository. Analytical EDDs shall be provided to ARS for the BARC database.

Part 3 - Data Transfer Support The Contractor shall support the data transfer of the EPIC 7&8 water quality analytical data to allow the completion of the PRAP and ROD.

Subtask 4 – Former PCB Storage Area (BARC 32) Groundwater Sampling, Performance Monitoring Sampling, and Piezometer Installation

The Contractor shall complete all sampling following the requirements below. All sampling shall conform to the Master QAPP requirements, including QA/QC sampling requirements and data validation levels.

Part 1 – Sampling Program & Piezometer Installation The contractor shall follow the sampling procedures as summarized in the Comprehensive Work Plan. The groundwater sampling activities shall include the following wells:

· Eight MWs installed during the prior SSP Studies (MW1 to MW8); and

· Six piezometer wells were installed in 2017 as part of the ongoing site investigations.

Before sampling, the Contractor shall gauge all monitoring wells. The Contractor shall coordinate with the National Park Service (NPS) for access to the offsite piezometers and meet all NPS safety requirements while working within the Baltimore-Washington Parkway.

The Contractor shall collect groundwater samples from each of the 14 existing monitoring wells and piezometers using EPA-approved methods by the BARC Master Quality Assurance Project Plan (QAPP). Requirements of the Master Health and Safety Plan (HASP), and Investigation Derived Waste (IDW) Plan shall be followed. Water quality parameters shall be measured as part of the sampling process. The collected samples shall be submitted to an approved analytical laboratory and analyzed for target compound list (TCL) volatile organic compounds (VOCs), PCBs, metals, and SVOCs.

BA32-PZ15 shall be sampled and analyzed for per- and polyfluoroalkyl substances (PFAS) due to detections during previous sampling events.

Part 2 – Reporting The Contractor shall follow the reporting procedures as summarized in the Work Plan. Specifically, all PFAS data shall be tabulated and validated, and a validation report provided following Level IV validation requirements. A comprehensive report on the findings from the sampling event shall be prepared as a draft and submitted to ARS and EPA for review and approval. Upon concurrence, the final comprehensive report shall be issued.

Upon completion and approval by ARS and EPA, the Contractor shall enter the report into the Information Repository/Administrative Record (IR/AR) and IR website (https://cercla.ba.ars.usda.gov). Analytical electronic data deliverable (EDD) shall be inserted by the Contractor into the BARC database.

Part 3 - Data Transfer Support The Contractor shall support the data transfer of the BARC 32 water quality analytical data to allow the completion of the PRAP and ROD.

Subtask 5 – BARC 32 TCRA Performance Monitoring Report

The Contractor shall complete the BARC 32 TCRA performance monitoring for CY25. The contractor shall follow the existing BARC 32 PMP and follow all requirements as outlined in the PMP (QA/QC, Health and Safety, IDW Management, etc). PMP activities include groundwater gauging, groundwater sampling, and generation of a letter report. All PMP details are found in BARC Information Repository (https://cercla.ba.ars.usda.gov). Contractor shall review the PMP and understand all requirements.

Subtask 6 – BARC 15 & EPIC 47 Airport AOCs Groundwater Letter Report

The Contractor shall collect groundwater samples from each of the 4 existing monitoring wells (BA15-MW1, BA15-MW2, EP47-MW1, EP47-MW2). The analytes collected for each well are the following:

BA15-MW1: VOCs and Herbicides BA15-MW2: VOCs EP47-MW1: VOCs EP47-MW2: VOCs and Herbicides

The contractor shall use EPA-approved methods and follow all requirements in BARC Master Quality Assurance Project Plan (QAPP). Requirements of the Master Health and Safety Plan (HASP), and Investigation Derived Waste (IDW) Plan shall be followed. Water quality parameters shall be measured as part of the sampling process. The collected samples shall be submitted to an approved analytical laboratory.

The contractor shall submit a brief letter report on the findings of the sampling event.

GOVERNMENT-FURNISHED INFORMATION

· ARS maintains all previous and necessary decision documents that when approved are uploaded to the BARC Information Repository (https://cercla.ba.ars.usda.gov). The Contractor may download the following documents for this task from this site.

· Comprehensive Annual Sampling Work Plan

· Final reports associated with BARC 12 AOC

· Final reports associated with BARC 22 AOC

· Final reports associated with EPIC 7 & 8 AOC

· Final reports associated with BARC 32 AOC

SCHEDULE OF DELIVERABLES

The Contractor shall provide an electronic copy and hard copy(s) of each deliverable as outlined below.

TASKS

COR

COR

COR

COR

COR

COR

COR

COR

COR

COR

Prior to final invoice the contract, the contractor shall supply all contract related documents and data to the COR in a common format via electronic delivery or flash drive.

PERIOD OF PERFORMANCE

Date of Award – April 2027

PROJECT CONTACTS

Contracting Officer’s Representative (COR)

Remedial Project Manager Environmental Engineer John Houston Environmental Engineer Beltsville Agricultural Research Center 10300 Baltimore Avenue, Building 003 Room 116 Beltsville MD 20705