WORK PLANS - Laserfiche WebLink

Home Browse Search

Appendix A-Sampling and Analysis Plan BSK Project E19-016-01F Stockton Metropolitan Airport(SCK) March 1, 2023 Stockton, California Page 2 1. INTRODUCTION This Sampling and Analysis Plan (SAP) has been prepared as a supporting document to be used in conjunction with and as an appendix to the Workplan Additional Site Investigation Per-And Polyfluoroalkyl Substances in Soil and Groundwater (Workplan, BSK, 2022). This SAP is intended to serve as a comprehensive reference to the standard sampling and analytical procedures to be followed during the implementation of the Workplan. In-depth specific Site background information, investigation approach and rationale, and scope of work are detailed in the Workplan. This SAP has been prepared consistent with the elements found in the State Water Resources Control Board (SWRCB) Division of Drinking Water Drinking Water Sample Collection Guidance for Per and Polyfluorinated Alkyl Substances (PFAS) revised May, 2020, California State Water Quality Control Board (SWQCB) Per and Polyfluorinated Alkyl Substances (PFAS) Sampling Guidance for Non-Drinking Water dated September, 2020, SWRCB Water Code Section 13267 Order for the Determination of the Presence of Per- and Polyfluoroalkyl Substances Order WQ 2019-0005-DWQ (Order), and CVRWQCB letter Asses Full Extents of Per- and Poly-Fluorinated Substances (PFAS) Contamination in Soil and Groundwater at Stockton Metropolitan Airport, 5000 S. Airport Way, Suite 202, Stockton, San Joaquin County, California dated April 8, 2022. 2. ABOUT PFAS PFAS are a large group of synthetic fluorinated chemicals widely used in industrial process and consumer products. These synthetic compounds are very persistent in the environment. People are exposed to these compounds through food, food packaging, textiles, electronics, personal hygiene products, consumer products, air, soils and drinking water. Some of these products could be present and/or used during a routine sampling event, such as plastic bags and bottles, waterproof clothing, detergents, waterproof pens and paper. The use of these products could possibly contaminate the samples during sample collection (including preparing the sampling site, actual sample collection, and decontamination). 3. GENERAL SAMPLING GUIDELINES General sampling guidelines for personal protective equipment and field clothing, sun and biological protection and food packaging are discussed in the sections below. 3.1 Personal Protective Equipment and Field Clothing PFAS are used to coat various clothing and leather products to repel water, oil, and dirt. While preparing for sampling, attention should be paid on clothing that is advertised as having waterproof, water- repellant, or and dirt and/or stain resistant characteristics. These types of clothing are most likely to have had PFAS used in their manufacturing.