Data Collected

ETL 1110-1-171

31 Jan 96

in-situ sparging device for sampling groundwater, and a thermal

desorption soil sampler; all for VOC sampling. Sensors under

development include one for heavy metals utilizing laser-induced

breakdown spectroscopy, and volatile organics/solvents sensor

using fiber optic Raman spectroscopy.

Data Collected:

g.

(1) Geotechnical: Tip resistance and sleeve friction are

recorded versus depth at 20 mm intervals. These data are

recorded in ASCII form on the system computers. The push rate is

hydraulically controlled, however dense material may slow down

the rate of advance.

(2) Laser Induced Fluorescence: Fluorescence data are

collected as the cone penetrometer is continuously pushed at a

rate of 20 mm/sec. One data point represents approximately 40 mm.

The rate of data collection is computer controlled, however the

rate can be adjusted by the operator. Returned light intensity

versus wavelength is recorded digitally as binary data for each

data point. The maximum intensity and corresponding wavelength

versus depth are also displayed in real time on a computer screen

panel plot as the push is in progress. Hard copies of the panel

plots are produced at the end of a push. Data storage and

retrieval are possible by acquiring the data on the hard drive

and transferring the data to a removable disk at the convenience

of the operator.

h. 3-D Visualization: 3-dimensional visualization of data

is currently available through WES. SCAPS districts should have

this capability in FY96 with either Silicon GraphicsTM or

IntergraphTM packages.

i. Field Testing Options: Soil and water samples collected

with SCAPS can be analyzed in the field to enhance decision-

making capability. Immunoassay test kits and field gas

chromatographs are available to provide near-real-time

contaminant identification. This allows SCAPS to provide a

flexible, optimized site characterization program. An Ion Trap

Mass Spectrometer will be available in FY96 for field analysis of

volatile organic compounds.

j.

Data Validation:

(1) Geotechnical Validation: The cone penetrometer probe

does not produce samples for direct observation of soil types.

This can be overcome by comparing sensor results to existing

stratigraphic information. Most HTRW sites have been

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