Process and apparatus for obtaining samples of liquid and gas from soil

Patent · Fri Jan 01 00:00:00 EST 1999

OSTI ID:872231

Rossabi, Joseph ^[1]; May, Christopher P ^[2]; Pemberton, Bradley E ^[3]; Shinn, Jim ^[4]; Sprague, Keith ^[5]

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1. 105 Michael Ct., Aiken, SC 29801
2. 5002 Hesperus Dr., Columbia, MD 21044
3. 131 Glencarin Dr., Aiken, SC 29803
4. Box 65, RFD. #1, South Royalton, VT 05068
5. Box 234 Rte. 14, Brookfield, VT 05036

An apparatus and process for obtaining samples of liquid and gas from subsurface soil is provided having filter zone adjacent an external expander ring. The expander ring creates a void within the soil substrate which encourages the accumulation of soil-borne fluids. The fluids migrate along a pressure gradient through a plurality of filters before entering a first chamber. A one-way valve regulates the flow of fluid into a second chamber in further communication with a collection tube through which samples are collected at the surface. A second one-way valve having a reverse flow provides additional communication between the chambers for the pressurized cleaning and back-flushing of the apparatus.

• Research Organization: Savannah River Site (SRS), Aiken, SC (United States)
• DOE Contract Number: AC09-89SR18035
• Assignee: Rossabi, Joseph (105 Michael Ct., Aiken, SC 29801);May, Christopher P. (5002 Hesperus Dr., Columbia, MD 21044);Pemberton, Bradley E. (131 Glencarin Dr., Aiken, SC 29803);Shinn, Jim (Box 65, RFD. #1, South Royalton, VT 05068);Sprague, Keith (Box 234 Rte. 14, Brookfield, VT 05036)
• Patent Number(s): US 5889217
• OSTI ID: 872231
• Country of Publication: United States
• Language: English

Related Subjects

process
apparatus
obtaining
samples
liquid
gas
soil
subsurface
provided
filter
zone
adjacent
external
expander
creates
void
substrate
encourages
accumulation
soil-borne
fluids
migrate
pressure
gradient
plurality
filters
entering
chamber
one-way
valve
regulates
flow
fluid
communication
collection
tube
collected
surface
reverse
provides
additional
chambers
pressurized
cleaning
back-flushing
provides additional
reverse flow
subsurface soil
flow provides
pressure gradient
one-way valve
obtaining samples
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