(B) PFAS Addendum.pdf

Addendum (A)

The intent of this addendum is to inform the contractor/perspective bidder that site work/excavation required to complete the scope will be conducted in an area of PFAS (per/poly fluoroalkyl substances) concern. Per attached PFAS map, there are known concentrations of PFAS in areas adjacent to the project site. It is unclear if the actual project site will contain PFAS but the contractor shall prepare their bid in a manner that accounts for the handling, testing, processing and disposal requirements related to PFAS impacted soil and in accordance with the attached NEPA, Installation Soil Management Plan, Project Specifications, additional prescriptive specifications within this addendum and all references therein.

In addition to being in a PFAS area of concern, the project is also adjacent to an “IR Zone” as identified in the NEPA. This addendum addresses only the potential additional cost for PFAS if encountered. The contractor is responsible for soil management and disposal for anticipated IR related contaminates under the base bid. All soil management and disposal shall conform to Local, State and Federal regulations.

With regard to potential soil contamination, the following assumptions shall apply for bidding:

1) All associated costs for handling, stockpiling and testing of soil throughout this project, shall anticipate and include IR Zone contaminates & potential PFAS impacted soils in the base bid.

2) All excess soil shall be assumed to be disposed of as “IR Zone” impacted soil in the base bid.

3) Should the excess soil stockpile test results confirm positive for PFAS related components, the added cost to properly dispose of the PFAS impacted soil shall be provided by the contractor in accordance with CLIN 0001B.

SPECIAL ENVIRONMENTAL REQUIREMENTS:

Due to the presence of known residual contamination within soil and groundwater at the site, all site workers who come in contact with contaminated soil and groundwater must be 29 CFR

1910.120 HAZWOPER certified personnel with current 8-hr HAZWOPER refresher certificates.

All certificates of site workers must be kept onsite within the Environmental Manager documentation and submitted as an Appendix within the Environmental Protection Plan.

The publicly accessible DENIX database should be used as a starting point when selecting a laboratory for a project. It does not provide all information needed (e.g., version of method or requirements and list of analyte lists under accreditation). To ensure the laboratory you select is accredited for your project analytes, the project manager/chemist must review the laboratory's scope of accreditation, which is found on their accreditation body's website.

To find a DoD-ELAP accredited laboratory, use the following link under the heading "Search Accredited Labs" on the EDQW page on the DENIX website:

https://www.denix.osd.mil/edqw/accreditation/accreditedlabs/index.html

To determine the version of EPA Method the laboratory is accredited for, the laboratory's DoD- ELAP Scope of Accreditation Certificate must be reviewed and approved by Installation Environmental Department through the Contracting Officer.

All site environmental monitoring wells must be protected throughout construction. Any damage to the site environmental monitoring wells is the sole responsibility of the construction contractor. Any repairs, replacement, and/or abandonment must meet all State of Connecticut and Environmental Restoration Program requirements.

Mid-Atlantic Comply with the following state, regional, and local requirements.

Naval Submarine Base New London, Connecticut Comply with all Installation specific and applicable State and Local Requirements.

Dig Permit A "Request for Permit to Excavate" form, also known as a dig permit, is required to be submitted to and approved by the Public Works Department (PWD) prior to initiating any ground-disturbing activities. Excavation work shall be performed in accordance with the site excavation procedures identified in the dig permit and shall be recorded on the soil tracking form.

Excavation Discrete soil samples for the project site were collected and the analytical test results and a sampling location plan are provided as Attachments to this specification.

The contractor must expect that all excavated soils at the site are assumed to be impacted by contaminants (including but not limited to petroleum, VOCs, PFAS, and metals) and considered characteristic non-hazardous solid waste. All excavated soils must be disposed of at a permitted, lined landfill with an active leachate and gas collection system that accepts co-mingled (including metals, VOCs, petroleum, and potentially PFAS) impacted materials. Please note, at the time of editing this specification, no landfills within Connecticut are permitted to receive PFAS impacted materials. All excavated soils must be documented within a waste characterization form and manifest as part of the waste determination documentation. The waste characterization analysis is dependent on receiving facility requirements and must meet the minimal sampling required by SUBBASE New London; typical analysis includes ignitability, corrosivity, reactivity, toxicity based on TCLP (metals, VOCs, SVOCs, pesticides and herbicides) results, PCBs, BTEX, and PFAS per validated EPA methods and in accordance with the most recent version of the Department of Defense Quality Systems Manual. All analysis must be completed by a ELAP accredited laboratory for each analysis conducted by that lab and all laboratory certifications/accreditations must be current and submitted to the government for review and approval. All laboratory analysis results must be submitted to the Government for review and approval. The only authorized department who may sign the waste manifest is a representative from the New London Environmental Department. The only allowable PFAS analytical method for sampling is EPA Method 1633 by a ELAP laboratory accredited for that method.

All Excavated soil must be stored in a manner that prevents rain from infiltrating the soil matrix and preventing any runoff into the surrounding soil or pavement or in lined, covered dumpsters.

A single contaminated soil stockpile should not contain more than 250 cubic yards. Excavated soil may not be stored on-site for more than 60 days.