Accession Number : ADA296180

Title :   Laboratory Studies on Biodegradation of Organics in the South Tank Farm Plume (STFP) Aquifer, Soil and Microbiological Analyses of STFP Aquifer Core Samples.

Corporate Author : SHELL CHEMICAL CO DENVER CO

Personal Author(s) : Salanitro, J. ; Wisniewski, H.

PDF Url : ADA296180

Report Date : JAN 1991

Pagination or Media Count : 7

Abstract : Soil and microbial analyses were made on samples of aquifer material taken from borings within the organics plume of the South Tank Farm area (STFP). These soils (pH 7.4-8.3) were classified as barns, silty clays or clayey types and contained low levels of organic carbon (<0.1 or O.2%) and Varying concentrations (3-120 ppm) of available nutrients (Fe, NH 4-N, PC 4-P). Enumeration of culturable micro-organisms associated with this aquifer material indicated that aerobic and facultatively anaerobic bacteria were present (1O'.1O /g wet soil) at all depths (19-25 ft) sampled. Anaerobic bacteria (denitrifiers, sulfate-reducers and methanogens) could not be cultured from any sample. These basic soil data indicate that significant numbers of bacteria and levels of nutrients (NH4+ , PO4+) are present in the STFP groundwatar to enhance the aerobic biodegradation of organic compounds in the aquifer.

Descriptors :   *AQUIFERS, *SOILS, *AROMATIC HYDROCARBONS, *BIODEGRADATION, *CORE SAMPLING, *MICROBIOLOGICAL TESTS, LABORATORY TESTS, BACTERIA, MATERIALS, CARBON, DEPTH, NUTRIENTS, ORGANIC MATERIALS, SAMPLING, LOW LEVEL, ORGANIC COMPOUNDS, PLUMES, NUMBERS, AEROBIC PROCESSES, SOUTH(DIRECTION), MICROBIOLOGY, ANAEROBIC BACTERIA.

Subject Categories : Geology, Geochemistry and Mineralogy
      Soil Mechanics
      Organic Chemistry
      Solid Wastes Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE