Accession Number : ADA294304

Title :   Air Force Site Characterization and Analysis Penetrometer System (AFSCAPS): Laser-Induced Fluorescence Cone Penetrometer - Testing at Carswell AFB TX. Volume 3.

Descriptive Note : Final rept. Mar 92-Nov 92,

Corporate Author : APPLIED RESEARCH ASSOCIATES INC SOUTH ROYALTON VT NEW ENGLAND DIV

Personal Author(s) : Shinn, James D. ; Bratton, Wesley L.

PDF Url : ADA294304

Report Date : DEC 1994

Pagination or Media Count : 103

Abstract : Applied Research Associates, Inc. and North Dakota State University, under contract to the Air Force Civil Engineering and Services Center are developing a Laser Induced Fluorescence-Cone Penetration Technique (LIF-CPT) for environmental site investigations. As part of this contract, a two-day demonstration of the system was conducted at Carswell AFB, Texas. Using this tool, the soils near the Base Service Station were investigated to determine soil stratigraphy, groundwater table elevation and the presence 0 gasoline contamination. The LIF-CPT determined that the soil stratigraphy consisted of soft clays underlaid by interbedded sands and silty clays above the bedrock. These sand layers are generally consistent throughout the area investigated and represent potential contaminant pathways into the West Fork of the Trinity River. The LIF identified gasoline contamination in the soils near the BSS underground storage tanks. The soil across the road was not identified as contaminated; however the LIF-CPT was only calibrated for jet fuels under the contract and detection limits for gasoline are currently unknown. Results for jet fuels indicate that LIF-CPT has a detection limit of 100 ppm for Total Petroleum Hydrocarbons (TPH). Preliminary field testing did confirm that the LIF-CPT does respond to gasoline and can indicate the presence of high-level contaminants.

Descriptors :   *FIBER OPTICS, *DETECTION, *OPTICAL DETECTION, *LASER INDUCED FLUORESCENCE, *PENETROMETERS, *CONTAMINATION, *SITE INVESTIGATIONS, *JET ENGINE FUELS, *SOIL TESTS, AIR FORCE, MILITARY FACILITIES, ENVIRONMENTS, LAYERS, SITES, FIELD TESTS, SAND, STRATIGRAPHY, GROUND WATER, SOILS, WATER POLLUTION, LIMITATIONS, HYDROCARBONS, CLAY, ELEVATION, STORAGE TANKS, OIL POLLUTION, CIVIL ENGINEERING, CONICAL BODIES, TEXAS, GASOLINE, PETROLEUM PRODUCTS, RADIO STATIONS, NORTH DAKOTA.

Subject Categories : Solid Wastes Pollution and Control
      Water Pollution and Control
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE