Operation and Maintenance Manual for Bioventing Pilot Testing Systems Spill Site Number 1, Building 457, and UST 702, Eaker Air Force Base, Blytheville, Arkansas
Abstract
This Operations and Maintenance (O&M) Manual has been created as a guide for monitoring and maintaining the performance of the pilot-scale bioventing blower systems and vent well plumbing at Spill Site No. 1, Building 457, and underground storage tank (UST) 702, at Eaker Air Force Base (AFB), Arkansas. Bioventing is the forced injection of fresh air, or withdrawal of soil gas, to enhance the supply of oxygen in subsurface soils for in situ bioremediation. A blower system is used to inject air into the soil, thereby supplying fresh atmospheric air (with approximately 20.8 percent oxygen) to contaminated soils. Once oxygen is provided to the subsurface, existing soil bacteria aerobically break down fuel residuals. Aerobic biodegradation is much more efficient than anaerobic biodegradation which occurs in oxygen depleted soils. Parsons Engineering Science, Inc. (Parsons ES) has installed three air injection bioventing systems at Eaker AFB. The system at Spill Site No. 1 consists of an air injection blower, blower shed, six vent wells (VWs), five soil gas monitoring points (MPs), and associated piping at the site. The blower systems at Building 457 and UST 702 are similar to the Spill Site No. I system, but treat a smaller volume of contaminated soils. The system at Building 457 has two VWs and the system at UST 702 has one VW. Both of these smaller systems have three MPs. The blowers at these three sites were stated in early April 1996 and the injection rates were optimized at each vent well to assure adequate aeration of contaminated soils to promote aerobic biodegradation. Air Force Base Conversion Agency (AFBCA) personnel located at Eaker AFB are responsible for routine monitoring of the bioventing systems. If significant problems are encountered with the operation of these systems, Parsons ES should be notified so repairs can be made.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1996
- Accession Number
- ADA384361
Entities
Organizations
- Parsons Corporation