soil gas Articles

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Falling Oil Price Forces Operators to Find Cost Savings in Water Management

by Biolargo, Inc.  (Nov. 20, 2015)

When oil prices were 80 to 100 dollars per barrel, water management costs were high, but they were tolerable when money was flowing profitably. However, as today’s falling price nears 40 dollars, water related costs are still high and only exacerbate widespread industry losses. The 150 US-based companies tracked by Oil & Gas Journal ...

GPR to uncover Connecticut`s past

by Geomorph Instruments  (Nov. 26, 2015)

Crouched beside one of the many stone walls that crisscross Pachaug State Forest in Voluntown, Brian Jones held one end of a rope threaded into a single-wheeled contraption that resembled a high-tech scooter attached to a computer screen. While Debbie Surabian, soil scientist with the Natural Resources Conservation Service, tracked grainy ...

Soil Fracturing

by Federal Remediation Technologies Roundtable  (Jan. 1, 1997)

Introduction Fracturing is an enhancement technology designed to increase the efficiency of other in situ technologies in difficult soil conditions. The fracturing extends and enlarges existing fissures and introduces new fractures, primarily in the horizontal direction. When fracturing has been completed, the formation is then subjected to vapor ...

Evaluating Leaks in a Soil Gas Sampling Train

by Eurofins Air Toxics Inc  (Sep. 16, 2013)

ABSTRACT The current advisory for active soil gas investigations in California requires leak tests to be conducted at eveiy soil gas probe while taking a sample. A leak may allow ambient ak into the sample train thus diluting the soil gas and underestimating the results. Also, the leak check compound itself may have impurities thereby ...

Impact of Sampling Media on Soil Gas Measurements

by Eurofins Air Toxics Inc  (Sep. 1, 2006)

Abstract To evaluate the vapor intrusion pathway for a building and to assess the associated human health risks, soil gas samples near the building site and under the building foundation may be collected. In order to meet risk assessment goals, the analytical laboratory is often required to report compounds of concern for these soil gas samples ...

Off-Gas Treatment Technologies for Soil Vapor Extraction Systems: State of the Practice

by US EPA - Environmental Protection Agency  (Jun. 1, 2006)

Untitled Document EXECUTIVE SUMMARY This document provides state-of-the-practice information on off-gas treatment technologies for soil vapor extraction ...

Greenhouse gas emissions and global warming potential of reclaimed forest and grassland soils

by Soil Science Society of America  (Mar. 1, 2009)

Received for publication June 19, 2008. Although greenhouse gas (GHG) emissions from soils are important, reclaimed mine soil (RMS) ecosystems are not widely assessed. Postreclamation land uses (forest, hay, and pasture) were investigated to: (i) monitor the magnitude of GHG fluxes, (ii) estimate their global warming potential (GWP), (iii) ...

Groundwater Plume, Source and Risk Identification Using Passive Soil Gas

by Beacon Environmental Services, Inc.  (May 19, 2008)

Abstract The results from sixty passive soil gas (PSG) samplers placed at a grain silo and mixed-use industrial facility with a known chlorinated solvent release aided with the rapid investigation time-schedule. The samplers were used to determine potential sources, plume extent and vapor risks in areas beyond the previous discrete soil sampling ...

Phosphorus and greenhouse gas dynamics in a drained calcareous wetland soil in Minnesota

by Soil Science Society of America  (Aug. 24, 2009)

Received for publication September 15, 2008. Restoration of wetland hydrology can produce ecological benefits but may have unintended consequences. We examined effects of altered water level on release of dissolved reactive phosphorus (DRP) and greenhouse gases (GHG) in soil cores from a marsh being evaluated for restoration. We also measured ...

The Measurement of Gas Bubble Size Distributions in a Three Phase Laboratory Gassy Soil

by ASTM International  (Mar. 1, 1988)

The technique developed can be used to measure the total void, gas void, or particle size distribution in both gassy and saturated sediments provided the void spaces, or particles, can be approximated to spheres. Here the technique is demonstrated for measuring gas bubble size distribution in a reconstituted estuarine silty clay, which has been ...

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