Environmental Protection Agency Region IV Perspective on SOD,
SKIDAWAY INST OF OCEANOGRAPHY SAVANNAH GA
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Descriptive studies of sediment oxygen demand SOD are found in the literature dating back to the early 1900s. These assessments were often laboratory studies. Later, the techniques for in situ measurements were published in the 1950s Davis and Davis 1986. Since then, the basic approaches to measuring SOD have remained unchanged and still involve laboratory treatment of sediments removed from the natural setting or in situ measurements using chamber devices. Among these two approaches, a variety of methods are found as indicated in the proceedings of a nationalinternational SOD workshop conducted in 1986 Institute of National Resources 1986. The purpose of this paper is not to debate the pros and cons of these methods but rather to identify some research objectives which in my judgment would significantly add to our ability to provide accurate and representative SOD rates for environmental decisions. To start my discussion, Ill provide you with a brief review of EPA Region IVs approach to measuring SOD. Drawing from my experience in Region IV, which spans 20 years, Ill attempt to identify some salient concerns I have with the present approach to SOD measurements.
- Geology, Geochemistry and Mineralogy
- Physical and Dynamic Oceanography
- Environmental Health and Safety