Completion of One Year Bioventing Tests: Tank Farm #2; Tank Form #4; SA-6; PRL-T46; Davis Global Communications
Abstract
The objective of the one year sampling effort was not to collect the large number of samples required for comprehensive statistical analysis. It was conducted to give a qualitative indication of changes in contaminant mass at each site within the Bioventing Initiative. Soil gas samples are somewhat similar to composite samples in that they are collected over a wider area. Thus, they provide a good indication of changes in soil gas profiles and volatile contaminant mass (See Addendum One to Test Plan and Technical Protocol for a Field Treatability Test for Bioventing - Using Soil Gas Surveys to Determine Bioventing Feasibility and Natural Attenuation Potential, February 1994). Soil samples, on the other hand, are discrete point samples subject to large variabilities over small distances/soil types. Given this variability coupled with known sampling and analytical variabilities, a large number of samples would have to be collected to conclusively determine "real" changes in soil contamination. Because of the limited number of samples, these results should not be viewed as conclusive indicators of bioventing progress or evidence of the success or failure of this technology. In situ respiration tests are considered to be better indicators of hydrocarbon remediation than limited soil sampling.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 13, 1995
- Accession Number
- ADA385960
Entities
Organizations
- Parsons Corporation