WORK PLANS - Laserfiche WebLink

Home Browse Search

Site Inspection UFP-QAPP Addendum Stockton AASF, Stockton, California 1. Introduction 1.1 Project Authorization This is the Installation -Specific Addendum to the Army National Guard (ARNG) Site Inspection (SI) Programmatic Uniform Federal Policy -Quality Assurance Project Plan (UFP-QAPP). This SI UFP-QAPP Addendum addresses specific SI activities to be completed at the Stockton Army Aviation Support Facility (Stockton AASF; also referred to as the "facility") in Stockton, California. The ARNG G9 is the lead agency in performing Preliminary Assessments (PAs) and Site Inspections (Sls) for Perfluorooctanesulfonic acid (PFOS) and Perfluorooctanoic acid (PFOA) Impacted Sites at ARNG Facilities Nationwide. This work is supported by the United States (US) Army Corps of Engineers (USACE) Baltimore District and their contractor AECOM Technical Services, Inc. (AECOM) under Contract Number W912DR-12-D-0014, Task Order (TO) W912DR17F0192, issued 11 August 2017. Programmatically, the ARNG is assessing the potential environmental impacts primarily from aqueous film forming foam (AFFF) and similar chemical releases suspected at their properties related to processes that used per- and polyfluoroalkyl substances (PFAS) (e.g., fire training, firefighting, and metal plating). The SI project elements will be performed by AECOM in accordance with the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA; US Environmental Protection Agency [USEPA], 1980), as amended, the National Oil and Hazardous Substances Pollution Contingency Plan (40 Code of Federal Regulations [CFR] Part 300; USEPA, 1994), and in compliance with US Department of the Army (DA) requirements and guidance for field investigations, including specific requirements for sampling for PFOA, PFOS, and perfluorobutanesulfonic acid (PFBS), and the group of related compounds known in the industry as PFAS. The term PFAS will be used throughout this plan to encompass all PFAS being evaluated, including PFOS, PFOA and PFBS, which are the key components of the suspected releases being evaluated, and the other 15 related compounds listed in the TO. This UFP-QAPP Addendum focuses on the SI phase of work specific to Stockton AASF (also referred to as the "facility") in Stockton, California. 1.2 SI Purpose The objective of this SI effort is to identify whether there has been a release to the environment from the Areas of Interest (AOIs) identified in the PA and determine the presence or absence of PFOA, PFOS, and PFBS at or above screening levels (SLs) at the facility. As stated in the Federal Facilities Remedial Site Inspection Summary Guide (USEPA, 2005), an SI has five goals: 1) Develop information to potentially eliminate a release from further consideration because it is determined that it poses no significant threat to human health or the environment. 2) Determine the potential need for a removal action (i.e., Time Critical Removal Action [TCRA]; applies to drinking water only). 3) Collect or develop data to evaluate the release. 4) Collect additional data to develop the conceptual site model (CSM) in preparation for an effective Remedial Investigation (RI). AECOM 1-1