Innovative Technology Verification Report
Field Measurement Technologies for
Total Petroleum Hydrocarbons in Soil
CHEMetrics,
Inc., and AZUR Environmental Ltd
RemediAid Total Petroleum Hydrocarbon
Starter Kit
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Innovative Technology
Verification Report
CHEMetrics, Inc., and AZUR Environmental Ltd
RemediAid Total Petroleum Hydrocarbon
Starter Kit
EPA 600/R-01/082
September 2001
The RemediAid Total Petroleum Hydrocarbon Starter Kit (RemediAid
kit) developed by
CHEMetrics, Inc. (CHEMetrics), and AZUR Environmental Ltd was demonstrated
under the
U.S. Environmental Protection Agency Superfund Innovative Technology Evaluation
Program in
June 2000 at the Navy Base Ventura County site in Port Hueneme, California.
The purpose of the
demonstration was to collect reliable performance and cost data for the
RemediAid kit and six
other field measurement devices for total petroleum hydrocarbons (TPH)
in soil. In addition to
assessing ease of device operation, the key objectives of the demonstration
included determining the
(1) method detection limit, (2) accuracy and precision, (3) effects of
interferents and soil moisture
content on TPH measurement, (4) sample throughput, and (5) TPH measurement
costs for each
device. The demonstration involved analysis of both performance evaluation
samples and
environmental samples collected in five areas contaminated with gasoline,
diesel, lubricating oil, or
other petroleum products. The performance and cost results for a given
field measurement device
were compared to those for an off-site laboratory reference method, Test
Methods for Evaluating
Solid Waste (SW-846) Method 8015B (modified). During the demonstration,
CHEMetrics required
46 hours, 10 minutes, for TPH measurement of 199 samples and 10 extract
duplicates. The TPH
measurement costs for these samples were estimated to be $8,510 for the
RemediAid kit and
$42,170 for the reference method. The method detection limits were determined
to be 60 and
4.79 milligrams per kilogram for the RemediAid kit and reference
method, respectively. During
the demonstration, the RemediAid kit exhibited good accuracy and
precision, ease of use, and lack
of sensitivity to interferents that are not petroleum hydrocarbons (neat
materials, including
tetrachloroethene and 1,2,4-trichlorobenzene). However, the device showed
less than 5 percent
response to neat materials, including methyl-tert-butyl ether and Stoddard
solvent, that are petroleum
hydrocarbons. Turpentine and humic acid, which are not petroleum hydrocarbons,
caused a
significant measurement bias for the device. In addition, the device exhibited
minor sensitivity to
soil moisture content during TPH measurement of weathered gasoline soil
samples. Despite some
of the limitations observed during the demonstration, the demonstration
findings collectively
indicated that the RemediAid kit is a reliable field measurement
device for TPH in soil.
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Posted December 03, 2001
Jesse Armstrong
Computer Sciences Corporation
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