Southwest Region BECOS TO 2 PWS Attch 2 - Base Specific Req March Dft 20 SEP 19 v3.0.docx

FA4890-06-R-9999

Attachment 1

APRIL XX, 2009

- final –

BECOS TO 2

ATTACHMENT 2

20 September 2019

1.1 Scope

The former March AFB is located in the City of Riverside, Riverside County, California. March AFB was placed on the National Priority List (NPL) in November 1989. A Federal Facility Agreement (FFA) was signed in September 1990 by the United States Air Force (USAF); the Department of Toxic Substances Control (DTSC); United States Environmental Protection Agency (USEPA) Region 9 (USEPA); and the Regional Water Quality Control Board (RWQCB), Santa Ana Region. The Air Force Reserve Command (AFRC) and the Air Force Real Property Agency (AFRPA) signed a Memorandum of Agreement in FY99 for sharing environmental restoration responsibility. Whole-base property transfer was completed in 2007.

The Installation Restoration Program (IRP) at former March AFB and MARB are executed collaboratively by the AFCEC/CIB under the BRAC Program and AFCEC/CZRW, under the Air Force Reserve Command (AFRC), respectively. Site cleanup requirements are based on the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), Resource Conservation and Recovery Act (RCRA), and California State Water Resources Control Board. Regulatory oversight is provided by the DTSC, successor to the California Health Services (the Lead State agency per the FFA); USEPA; and the RWQCB.

Groundwater elevations at the installation rose approximately 40 to 50 feet between 1970 and 1984. Since 1992, groundwater levels have risen at a rate of 1-foot to 2 feet per year in the central part of the base. At LF004, the wastes on the northern end of the landfill are in contact with the groundwater. However, groundwater monitoring conducted in 2007 and 2008 suggested that the submerged waste was not a continuing source of contamination. The RWQCB agreed that the existing remedy was adequate, and that further action would not be necessary.

As of May 2018, there are three remaining open CERCLA sites managed by the AFCEC/CIB: LF004, LF006, and FT007. Remedial activities at these sites are being conducted, in accordance with the existing Records of Decision (RODs).

As of 9 November 2012, all groundwater plumes beneath the installation, except LF004, were consolidated into a single basewide groundwater site (i.e., CG049), managed by MARB as OU-5. This includes groundwater beneath FT007, which is currently remediated in accordance with the OU-1 ROD groundwater remedy (i.e., extraction and treatment and deed restrictions to prohibit well installation and groundwater use) and being implemented by MARB.

At FT007, increasing concentrations of chlorinated solvents in groundwater from 2000 to 2007 suggested the potential presence of an unknown source of soil contamination that may be impacting groundwater. An Interim ROD Amendment for soil was signed on June 2017 to modify the NFA remedy established in the OU-1 ROD and establish SVE and LUCs as the interim remedy. On March 2017, additional focused investigation at the five former burn pits/disposal areas was initiated and expected to be completed in 2019.

In addition to the requirements presented in this PWS, this scope includes the following:

· Assessment of potential impacts to remedy due to rising groundwater

· Submittal of electronic versions of documents to the State of California GeoTracker.

· Perform biological surveys, avoidances, and measures, as needed to avoid and/or minimize potential effects to biological resources within the area of the proposed action. This includes implementation of recognized survey protocols and avoidance and minimization measures for the California Burrowing Owl and Stephens Kangaroo Rat.

Contractors are not responsible for the following:

· Implementation of modifications to remedy due to rising groundwater.

1.3 Applicable Documents

Key Documents

1.4 Work Ramp-Up and Transition

Transition of Work

Complete Reporting Complete

1.5 Remedial System Components

· See Attachment 1 regarding remedial system components.

2.6.1 Meeting/Teleconference Support

· Semiannual BCT meetings in-person are currently held at March ARB.

2.6.2 Public Meetings and Hearings

· Semiannual RAB meetings are currently held in Spring and Fall at March ARB.

2.6.5 Site Access: Permits, Easements, and Work Site Access

· South Coast Air Quality Management District (SCAQMD) Permit. Because Site FT007 is a CERCLA site, the SVE system at the site is exempt from SCAQMD permitting. However, compliance with the regulations will include analytical sampling over the operational lifetime of the system. Disposal of the vapor-phase GAC will require administrative tracking and reporting of the storage, transportation, and disposal or recycling of the generated waste. All this information must be reported in the SVE O&M Report.

2.9 Contractor Documentation

· No base-specific requirements.

3.4 Computer Aided Design Drawing (CADD) and Geographic Information Systems (GIS) Updates

· No base-specific requirements.

6.14 Land Use Controls (LUC)

· The contractor shall conduct annual inspections and reviews to confirm compliance with all CERCLA and non-CERCLA environmental restrictions associated with the sites. Where possible, the contractor shall obtain and provide copies to the Air Force of annual reporting required by state covenants for applicable sites by respective property owners. An annual inspection report shall be provided or otherwise included in site reports by the contractor to confirm implementation of environmental restrictions.

· The contractor shall provide supporting information and technical support to the Air Force for property owner requests to remove restrictive covenants.

6.15 Five-Year Reviews

· The next combined statutory and policy 5th and 6th Five-Year Reviews are due in September 2024.