EV35 NLON Site 11 Biosparge Oand M NAVAL SUBMARINE BASE NEW LONDON GROTON CONNECTICUT

This document is Amendment 0001 to Solicitation N40085-25-R-0058, issued by NAVFAC MID ATLANTIC CONTRACTING CORE, with an effective date of August 19, 2025. The solicitation is for the EV35, NLON Site 11 Biosparge O&M project. The purpose of this amendment is to provide three files: "Final 100 Percent RD," "Biosparge OM Manual," and "Biosparge OMM Monthly Report 2025-06." The amendment also specifies an Electronic PIEE DUE DATE of September 9, 2025, at 2:00 p.m. EDT. All other terms and conditions of the original solicitation remain unchanged. The contract point of contact is Georgia Scott.

KOMAN Government Solutions, LLC/Trinity submitted the June 2025 Monthly Progress Summary Report for the biosparge system at Naval Submarine Base New London, Groton, CT, under Contract# N4008523D0073/Task Order# N4008524F6461. Key activities included weekly remote checks, an on-site maintenance round on June 10, 2025, and successful achievement of desired flow rates in most wells, though BSW-26 showed no flow, possibly due to damaged air lines from recent asphalt paving by another contractor. LNAPL gauging on June 10, 2025, detected LNAPL in TMW5 (0.21 feet) and sheens in 1MW4 and 1MW11. LNAPL recovery efforts removed a total of 82.655 gallons from the site to date. Upcoming July 2025 activities include another maintenance round, LNAPL gauging and recovery, inspection of BSW-26 with a downhole camera, and repair of the BL-101 flowmeter. Persistent issues include inaccessible wells (BSW-01, BSW-02) due to asphalt, no flow at BSW-26, and the destruction of monitoring well 1MW9, which requires replacement. Repairing biosparge lines and well substructures, and installing new wells, are outside the scope of the current contract.

This document outlines the 100% Remedial Design (RD) for addressing non-Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) petroleum hydrocarbon contamination in soil and groundwater at Operable Unit 4 (OU4), Zones 1 and 2, of the Naval Submarine Base - New London (NSB-NLON) in Groton, Connecticut. The chosen remediation strategy, approved by the Connecticut Department of Energy and Environmental Protection (CTDEEP), includes biosparge injections, monitored natural attenuation (MNA), land use controls (LUCs) for soil contamination, and long-term monitoring (LTM). The biosparge system will inject air to stimulate biodegradation, while MNA will be used in areas with lower contaminant concentrations. LUCs will restrict site use to industrial/commercial purposes to prevent exposure to remaining contaminants. This design replaces an initial ozone/air sparging plan due to concerns about corrosion to existing utilities and potential mobilization of hexavalent chromium. The project outlines detailed implementation plans, including pre-construction activities, mobilization, construction, and post-construction monitoring, all in accordance with applicable Connecticut Remediation Standard Regulations (RSRs).

The Procurement Integrated Enterprise Environment (PIEE) Vendor Registration Guide outlines the process for new and existing users to register for accounts and add roles within the PIEE Solicitation Module, an enterprise-level service for the Department of Defense (DoD). This module automates and secures the process for managing solicitations and responses. The guide details step-by-step instructions for self-registration, including creating a user ID, password, security questions, and completing user, supervisor, and company information. It also explains how to select and add vendor roles like 'Proposal Manager' (required for submitting offers) or 'Proposal View Only,' using a CAGE Code for location. For existing users, the guide provides instructions on adding additional roles. The document also includes helpful resources for getting started, account support, and technical assistance, along with a matrix detailing the actions and menu items available for each vendor role.

The provided government file outlines a standardized template for documenting questions and responses related to government solicitations, such as RFPs or grants. It includes fields for a unique question number (PPI No.), a reference to the document section and paragraph, the question itself, the government's official response, and administrative details like the date submitted, the government responder's name and email, and any amendment number. This structure facilitates clear communication and tracking of inquiries and clarifications during the procurement process, ensuring transparency and accountability for all parties involved in federal, state, and local government contracts and grants.

This contract task order (CTO) outlines the requirements for long-term environmental operations, maintenance, and monitoring (OM&M) of the Biosparge System at Naval Submarine Base New London, Groton, Connecticut. The contractor will perform OM&M of the Biosparge System for Zones 1 and 2, which aims to remediate petroleum hydrocarbon contamination in soil and groundwater. Key tasks include project management, biosparge system operation and maintenance, performance monitoring (including groundwater sampling and waste management), and extensive reporting and data management within the Navy Installation Restoration Information Solution (NIRIS). The contract has a 12-month base period with three 12-month option periods, awarded on a firm-fixed-price basis. Strict adherence to federal, state, and local regulations, as well as Navy guidelines for safety, security, and data submission, is required.

The provided document, a Price Worksheet for "Site 11 Biosparge O&M" at Naval Submarine Base New London, Groton, CT, outlines a federal government request for proposal (RFP) or grant-related cost breakdown for environmental remediation services. The worksheet details four key work elements, each listed as a "Lump Sum" price unit, indicating a fixed cost for each component. These elements include: Meetings, Project Management, Administrative Support and Project Plans; Biosparge Operations and Maintenance; Performance Monitoring; and Reports, Data Validation and NIRIS Requirements. The document includes columns for Base Price, Option 1, Option 2, and Option 3, suggesting a multi-phase project or the possibility of additional, optional services. The overall purpose of this document is to solicit or outline pricing for the operation and maintenance of a biosparge system, an environmental remediation technology, at a naval facility.

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This amendment (0004) to Solicitation N40085-25-R-0058, issued by NAVFAC MID ATLANTIC CONTRACTING CORE, addresses the EV35, NLON Site 11 Biosparge O&M project. Effective September 3, 2025, its purpose is to provide PPI Log 02 and 03, and Biosparge OMM Monthly Report 1-6. The amendment specifies a PPI Cutoff Date of 10 calendar days prior to the proposal due date and an Electronic PIEE DUE DATE of September 9, 2025, at 2:00 p.m. EDT. All other terms and conditions of the original solicitation remain unchanged. For inquiries, the Contract POC is Georgia Scott at georgia.a.scott.civ@us.navy.mil or 757-341-0691.

This government file details responses to questions regarding the Long-Term Operation, Maintenance & Monitoring of Biosparge System at Zones 1 & 2, likely for a Request for Proposal (RFP) or a similar government contract. Key information includes the availability of the 2024 Annual Report and 2025 Monthly Progress Summary Reports, and the Sampling and Analysis Plan (SAP). It's confirmed that no spare parts inventory is available and the OxyGuard Polaris meter will remain on-site. The contractor is responsible for supplying pumps and tubing for monitoring wells and for the management and disposal of all waste, including LNAPL. Annual groundwater sampling occurs in October, with specific field parameters outlined. Updates to the O&M manual and SAP are required as needed, and alarm response times emphasize minimizing system downtime.

This government file addresses questions regarding the period of performance and waste disposal responsibilities for a contract. The technical completion date for the contract is September 15, 2026, with a period of performance until March 15, 2027, and includes options for extensions. The October 2025 annual groundwater sampling event is part of this contract. The contractor is responsible for all waste management and disposal, including both investigation-derived waste (IDW) and light non-aqueous phase liquid (LNAPL). LNAPL collected during monthly recovery events must be drummed, labeled, transported to an approved Hazardous Waste Management Facility for storage and characterization, and then transported offsite for disposal at a licensed TSDF. LNAPL and purge water are to be combined, and the resulting drummed waste must be disposed of at least annually.

KOMAN Government Solutions, LLC/Trinity (KGS/Trinity) submitted the January 2025 Monthly Progress Summary Report for the biosparge system at Naval Submarine Base New London, Groton, CT. Key activities included weekly remote checks, an on-site maintenance round on January 3, 2025, and Light Non-Aqueous Phase Liquid (LNAPL) gauging and recovery. The biosparge system operated as designed, achieving desired flowrates, despite 173 hours of downtime due to freezing conditions and overvoltage alarms from an emergency diesel generator at B.29 Power Station. LNAPL was detected in monitoring wells 1MW4, 1MW11, and TMW5, with 3.0 gallons recovered in January, contributing to a total of 71.90 gallons removed to date. Planned activities for February 2025 include another maintenance round, LNAPL gauging and recovery, and addressing stakeholder comments on the Draft Annual Report (2024). Issues include inaccessible wells BSW-01 and BSW-02 due to asphalt patches, and the destruction of 1MW9, with a recommendation for replacement. The report includes attachments for observations, LNAPL summary, and weekly system logs.

KOMAN Government Solutions, LLC/Trinity (KGS/Trinity) submitted the February 2025 Monthly Progress Summary Report for the biosparge system at Naval Submarine Base New London, Groton, CT, under contract N4008523D0073/Task Order# N4008524F6461. Key activities included weekly remote checks, an on-site maintenance round on February 5, 2025, and confirmation that the system is running as designed. A VFD fault occurred on February 16, potentially due to freezing. Desired flowrates were achieved for most wells, with an exception at BSW-26. LNAPL gauging on February 5, 2025, detected light non-aqueous phase liquid in monitoring wells 1MW4, 1MW11, and TMW5, with estimated thicknesses of 0.20, 0.05, and 1.9 feet, respectively. Recovery efforts removed 0.5, 0.25, and 2.0 gallons from these wells, bringing the total LNAPL removed to date to 74.65 gallons. Scheduled activities for March 2025 include another system maintenance round with LNAPL gauging and recovery, and addressing stakeholder comments on the Draft Annual Report (2024). Issues include inaccessible well covers for BSW-01 and BSW-02 due to asphalt, though both are receiving the required flowrate, and the destruction of well 1MW9, with a recommendation for its replacement due to its role in monitoring concentrations before entering the Thames River.

KOMAN Government Solutions, LLC/Trinity (KGS/Trinity) submitted the March 2025 Monthly Progress Summary Report for the biosparge system's Operations, Maintenance, and Monitoring (OM&M) at Naval Submarine Base New London, Groton, CT. Activities included weekly remote checks, an on-site maintenance round on March 4th, and Light Non-Aqueous Phase Liquid (LNAPL) gauging and recovery on the same day. LNAPL was detected in wells 1MW4, 1MW11, and TMW5, and 0.75, 0.50, and 0.50 gallons were recovered, respectively, contributing to a total of 76.40 gallons removed to date from the site. The system is generally running as designed, though two VFD faults occurred due to freezing conditions, and weekly logins were missed for three weeks. Flowrates were mostly achieved at target levels. The report also detailed submittals, planned April 2025 activities including the next system maintenance round and addressing Annual Report comments, and outstanding issues such as inaccessible wells BSW-01 and BSW-02, and the recommendation to replace destroyed well 1MW9.

KOMAN Government Solutions, LLC/Trinity (KGS/Trinity) submitted its April 2025 Monthly Progress Summary Report for the biosparge system's Operations, Maintenance, and Monitoring (OM&M) at Naval Submarine Base New London. Key activities included weekly remote checks, on-site maintenance, and oil changes. Most flowrate targets were met, but BSW-26 has not received flow for over six months, possibly due to damage from asphalt paving by another contractor. LNAPL was detected in TMW5 (1.2 feet thick) and a grease-like substance at 1MW4, with 0.75 and 1.5 gallons recovered, respectively, bringing the total to 78.65 gallons. The wooden protective structure behind the Conex box is severely deteriorated and needs replacement. Upcoming May activities include LNAPL gauging and recovery and scheduling repairs for the wooden structure. Issues include inaccessible wells (BSW-01, BSW-02) due to asphalt, continued lack of flow at BSW-26, and the destruction of monitoring well 1MW9, which requires replacement.

KOMAN Government Solutions, LLC/Trinity (KGS/Trinity) submitted the May 2025 Monthly Progress Summary Report to NAVFAC Mid-Atlantic for biosparge system operations, maintenance, and monitoring (OM&M) at Naval Submarine Base New London, Groton, CT. The report details May 2025 activities, including weekly remote checks, on-site maintenance, and achievement of desired flow rates in most biosparge wells. Noteworthy is the suspected damage to the air line at BSW-26, hindering flow. The wooden protective structure for PVC air lines was replaced, and LNAPL gauging and recovery were performed. Future plans include a June 2025 maintenance round and inspection of BSW-26 with a downhole camera. Key issues include inaccessible wells (BSW-01, BSW-02), the persistent flow problem at BSW-26, and the destruction of monitoring well 1MW9, with recommendations for replacement outside the current contract scope. Attachments include O&M observations, LNAPL summary, weekly system log, and photos of the repaired structure.

KOMAN Government Solutions, LLC (KGS/Trinity) submitted the June 2025 Monthly Progress Summary Report for the biosparge system in Zones 1 and 2 of the Naval Submarine Base New London, CT. The report details operations, maintenance, and monitoring activities, noting that the system is generally running as designed. Key issues include a non-functional flowmeter on BL-101 and a lack of flow to biosparge well BSW-26, possibly due to damage from another contractor's asphalt paving. Additionally, BSW-01 and BSW-02 remain inaccessible due to asphalt patches, and monitoring well 1MW9 was destroyed previously. LNAPL gauging on June 10, 2025, detected LNAPL in TMW5 (0.21 ft) and sheens in 1MW4 and 1MW11, leading to recovery efforts totaling 0.25, 1.5, and 0.25 gallons, respectively. To date, 82.655 gallons of LNAPL have been removed. Planned July 2025 activities include LNAPL gauging and recovery, inspecting BSW-26 with a downhole camera, and repairing the BL-101 flowmeter. The report emphasizes that repairing biosparge lines and well substructures, or installing new wells, falls outside the current contract scope.

Amendment 0003 to Solicitation N40085-25-R-0058, issued by NAVFAC MID ATLANTIC CONTRACTING CORE, modifies the original solicitation dated August 27, 2025. This amendment is for the "EV35, NLON Site 11 Biosparge O&M" project. Its primary purpose is to provide Attachment G SAP and Attachment REM 7434 Operation and Maintenance Report. All other terms and conditions of the solicitation remain unchanged. The Electronic PIEE Due Date for proposals is September 9, 2025, at 2:00 p.m. EDT. The contract point of contact is Georgia Scott, georgia.a.scott.civ@us.navy.mil, Tel: 757-341-0691.

The document outlines the "Final Sampling and Analysis Plan/Quality Assurance Plan" for the Soil and Groundwater Remedial Action at Zones 1 & 2, Operable Unit 4, Naval Submarine Base New London, Groton, Connecticut. Prepared by APTIM Federal Services LLC for the Department of the Navy, this plan details a biosparge system installation, monitoring well sampling, and system operation/maintenance to reduce Extractable Total Petroleum Hydrocarbons (ETPH) in groundwater and soil. The project, under Contract No. N62470-16-D-9004, Contract Task Order WE18, aims to meet Connecticut Department of Energy and Environmental Protection (CT DEEP) Surface Water Protection Criteria. The plan includes detailed sampling procedures, analytical methods, quality assurance protocols, and decision criteria for system performance, waste disposal, and clean fill material. Long-term monitoring will follow system decommissioning, with re-commissioning if ETPH levels rebound.

KOMAN Government Solutions, LLC (KGS) submitted the 2024 Annual Report for the Long-Term Operation, Maintenance & Monitoring (OM&M) of the biosparge system at Naval Submarine Base New London (NSBNL), Groton, CT. The report details OM&M activities conducted in 2024 for Zones 1 and 2, which target Extractable Total Petroleum Hydrocarbons (ETPH) contamination in overburden groundwater. The biosparge system operated for 5,640 hours (64.38% uptime) and injected approximately 34.25 million cubic feet of air, consistent with its design. Despite a four-month shutdown due to contractual issues, the system generally performed well, with minor maintenance for condensation buildup. Performance monitoring in October 2024 revealed ETPH exceedances in some wells, with statistical trend analysis showing varying trends across different zones. A rebound evaluation indicated contaminant rebound and plume migration in some areas due to the system shutdown, particularly where Dissolved Oxygen (DO) levels dropped significantly. Overall, 14.65 gallons of Light Non-Aqueous Phase Liquid (LNAPL) were recovered in 2024.

This document is Amendment/Modification 0002 to Solicitation N40085-25-R-0058, issued by NAVFAC MID ATLANTIC CONTRACTING CORE, with an effective date of August 27, 2025. The amendment pertains to the project "N40085-25-R-0058, EV35, NLON Site 11 Biosparge O&M." The primary purpose of this amendment is to provide three additional files: PPI LOG 02, File 1: NHWM 0273529, and File 2: Koman_profile_NLON. The solicitation's Electronic PIEE DUE DATE is September 9, 2025, at 2:00 p.m. EDT, with the PPI Cutoff Date 10 calendar days prior. All other terms and conditions of the original solicitation remain unchanged. The document also provides a contract point of contact, Georgia Scott, including her email and phone number.

This government file addresses two key requests related to environmental remediation and monitoring within a federal contract. The first request, identified as PPI No. 0002, asks for the "Sampling and Analysis Plan (SAP) Zones 1 & 2 Non-CERCLA Operable Unit 4 Soil and Groundwater Remedial Action Construction and System Startup (APTIM March 2018)." The government's response confirms that the SAP is being provided. The second request, also identified as PPI No. 0002 and related to "WE #3 PWS," seeks the "last Annual Groundwater Sampling Report relevant to this PWS with copies of waste manifests." The government responder states that the last report is being provided and efforts are underway to locate the manifest or bill of lading. This document is likely part of a Request for Proposal (RFP) or a similar contracting process, where clarification and documentation are exchanged between the questioning party and the government responder regarding performance objectives and environmental compliance.

The provided file appears to be a record of a shipment or inventory, likely within a government logistics or procurement context. It includes several alphanumeric identifiers such as "0273529", "KTR00867", "KTR00932", and "P1999-IR, 112878", which could represent tracking numbers, contract IDs, or internal codes. "RX 3-4-25" might indicate a date or a specific routing. The item "H132" is listed with a weight of "542 lb", suggesting a tangible good. The notation "COD #3" could refer to a specific classification or a 'Cash on Delivery' reference. The file's purpose is to document a transaction or movement of goods, providing essential details for tracking and management within a supply chain.

This government file is a Waste/Material Profile Form (ID: 758738) for "(L) Groundwater" generated at the NAVAL SUBMARINE BASE NLON in Groton, CT. The waste stream, described as purge water from groundwater sampling containing diesel-range organics, is managed by KOMAN GOVERNMENT SOLUTIONS LLC. The material is classified as a non-hazardous liquid waste with a petroleum odor, brown color, and a pH between 5 and 10. Key chemical constituents include various metals (Barium, Chromium, Lead, Mercury, Arsenic, Selenium, Cadmium, Silver) and PFAS compounds (PFBS, PFDA, PFDoA, PFHpA, PFHxA, Total PFHxS, PFNA, PFOA, PFOS, PFTrDA, PFUnA, PFTeDA). It is not DOT hazardous, RCRA hazardous, explosive, radioactive, or shock sensitive. The volume is 110 gallons, generated one time, and transported in 55-gallon drums. This profile is essential for proper waste characterization, handling, and regulatory compliance, particularly concerning the presence of PFAS and other chemical constituents.

This Operations and Maintenance Manual provides comprehensive guidance for the biosparge system at Building 29, Naval Submarine Base-New London, Groton, Connecticut, specifically addressing non-CERCLA soil and groundwater contamination in Operable Unit 4, Zones 1 and 2. The document details the site's history, conditions, and contaminants (TPH, DRO, GRO), which are primarily fuel and petroleum-related. It outlines the biosparge equipment, including blowers, wells, and controls, and provides instructions for system startup, routine operations, monitoring, and shutdown. The manual also covers essential maintenance procedures for the biosparge system, electrical components, and monitoring wells, emphasizing safety and compliance with Connecticut Department of Energy and Environmental Protection (CTDEEP) regulations. This work is performed under Contract Number N62470-16-D-9004, Task Order WE18, for the U.S. Department of the Navy.

NAVAL FACILITIES ENGINEERING COMMAND, MID-ATLANTIC issued Solicitation N4008525R0058 for a Contract Task Order (CTO) under the Multiple Award Contract Remedial Action Operations Award Contract(s) (RAOMAC). This CTO seeks to provide EV35, NLON, Site 11 Biosparge Operation & Maintenance (O&M) at Naval Submarine Base New London (SUBASE), Groton, Connecticut. The project's main objective is long-term environmental O&M of the Zones 1 and 2 Biosparge System, commencing May 1, 2020. The solicitation, issued September 9, 2025, is open to existing RAOMAC contract holders: ITMS-GES JV LLC, Koman Government Solution LLC, Meadows-EV JV LLC, and G2S LLC. Award will be based on the lowest evaluated price, with proposals due by September 9, 2025, 2:00 PM EST, submitted electronically via PIEE. No site visit will be conducted. Inquiries must be submitted via the Pre-Proposal Inquiry (PPI) form to Georgia Scott by 10 calendar days prior to the proposal due date. Funding is not guaranteed, and offerors will not be reimbursed for proposal costs if no award is made.