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Field Sampling Plan, RL53 FSP Amendment for Wipe Sampling

Amended May 2000

Introduction

This document is the addendum that modifies the existing SAP for the Closure of SWMUs at I-1, which is a former incinerator building at CSSA in Boerne, Texas. The purpose of this addendum is to address the collection of a sample for analysis using the wipe sampling technique, which was not outlined in the original SAP.

This addendum to the SAP has been prepared to comply with all appropriate regulatory requirements of 30 TAC �335 for clean closure under Risk Reduction Standard Number 1. This plan describes the sampling procedure that will be implemented during closure activities to satisfy regulatory requirements.

Incinerator-1 Description

SWMU I-1 is located in the southern portion of the inner cantonment. According to CSSA personnel the incinerator was used only to burn paper trash and has been out of use since 1960. However, recently the incinerator building was also used for storage of transformers.

Procedures for Sampling Activities

One wipe sample will be collected from either the incinerator unit or the incinerator stack. This sample will be analyzed for Dioxins. A second wipe sample will be collected from the floor in the approximate location that the transformers were stored. This sample will be analyzed for PCBs. Due to cost constraints, no corresponding QA/QC samples will be collected for PCBs or dioxins.

The following describes the steps necessary to properly obtain a sample using the wipe technique.

  1. Wipe Area:

Establishing a known area that will provide sufficient loading without exceeding the absorptive capacity of the wipe material is the key to proper surface evaluation. As a general practice, a 10 centimeter (cm) x 10 cm area is evaluated as a discrete sample.

Field efforts can be simplified by developing templates using inert materials, such as posterboard, plastic, or other material (dependent on the nature of the contaminant of concern). The template is usually an 8.5 inch (in.) x 11 in. piece of the inert material with a 10 cm x 10 cm "hole" cut away that will leave the target surface exposed for the wiping process.

  1. Wipe Materials:

In general, the wipe materials will be comprised of an inert, absorptive material wetted with an appropriate solvent to enhance absorption/dissolution from the surface to be evaluated. The wipes are typically 10 cm x 10 cm gauze or "Techni-cloth" wetted with minimal solvent and contained within a small jar.

  1. Wipe Process:

Wiper is removed from the jar.

Excess solvent is squeezed from the wipe.

Sweep the surface from left to right with the wiper.

Fold the wiper, and make an additional surface sweep from bottom to top.

Place the wipe back into the original jar.

Ensure that the jar is appropriately labeled and that the surface area of the wipe is recorded.

  1. Typical wipe kits consist of the following:

Jar: 1 or 2 ounce jar

Wiper: Gauze or specialty material (Techni-cloth by 3M Corp)

Solvent: Sufficient to wet the wipe and a small amount remaining in the jar to maintain moisture and ensure vapor pressure within the bottle.

Constituents of Concern and Analytical Methods

In accordance with 30 TAC Chapter �335 Subchapter S, for closure under Risk Reduction Standard 1, cleanup levels shall be attained using analytical procedures taken from one of the following sources: Test Methods for Evaluating Solid Waste, EPA, SW-846, September 1994; Methods for Chemical Analysis of Water and Wastes, EPA, March 1983; or Standard Methods for the Examination of Water and Wastewater, American Public Health Association, 1995.

The contaminants of concern, Metals, VOCs, SVOCs, PCBs, and Dioxins, will be analyzed for according to the methods listed in the table below. Laboratory results, including PQLs, need to be reported. Quality assurance objectives are listed in Attachment A. Complete laboratory quality assurance/quality control should be kept on file in the event of a request for more information from TNRCC.

Constituents of Concern and Methods of Analysis

Analyte

Method

Metals (mg/kg)

  

Antimony

SW6010A

Arsenic

SW7060

Barium

SW6010A

Cadmium

SW7131A

Chromium

SW6010A

Lead

SW7421

Nickel

SW6010A

Selenium

SW6010A

Silver

SW6010A

Volatiles (mg/kg)

SW8260B

Semivolatiles (mg/kg)

SW8270B

Dioxins

SW8290

PCBs

SW8080

Explosives

SW8330