Appendix F: Laboratory Evaluation of Volatile Emissions and Volatile Dispersion Modeling

Appendix F

Laboratory Evaluation of

Volatile Emissions and Volatile

Dispersion Modeling

F.1 Introduction

This appendix provides procedures for conducting laboratory tests for the

evaluation of volatile emissions from exposed sediments. The background,

rationale, and tiered framework for application of these procedures are discussed

in Chapter 7 of the main text of the Upland Testing Manual (UTM). Also

provided in this appendix are equations for estimating on-site and off-site

volatile contaminant exposure concentrations.

This chapter contains two procedures:

a. Laboratory volatile emission test procedure.

b. Volatile exposure evaluation.

F.2 Laboratory Volatile Emission Test Procedure

Actual measurements of volatile contaminant of concern (COC) may be

needed in order to determine emissions under a variety of site environmental and

operational conditions for which spreadsheet models described in Chapter 7 are

not designed. Highest volatile COC concentrations tend to occur during initial

loading or disposal stages (0-48 hr) of the sediment (Price et al. 1997, 1999;

Ravikrishna et al. 1998; Valsaraj et al. 1999). The laboratory procedures

described herein can be conducted to obtain data on the emission of volatile

COC from dredged material. These data can be used in validated predictive

volatile emissions models for dredged material. Actual volatile COC emissions

from dredged material in place in a confined disposal facility (CDF) can be

measured if there is a need to quantify emissions from CDF management

procedures such as dredged material reworking.

Appendix F Laboratory Evaluation of Volatile Emissions and Volatile Dispersion Modeling