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Use of Soil-Gas, Gas Flux, and Ground-Water Monitoring to Evaluate Potential Leakage to Underground Sources of Drinking Water, the Atmosphere, and Buildings during Geological Sequestration of Carbon Dioxide
Citation:
DIGIULIO, D. C., R. T. WILKIN, R. PULS, AND A. LEVINE. Use of Soil-Gas, Gas Flux, and Ground-Water Monitoring to Evaluate Potential Leakage to Underground Sources of Drinking Water, the Atmosphere, and Buildings during Geological Sequestration of Carbon Dioxide . U.S. Environmental Protection Agency, Washington, DC, EPA/600/S-09/030, 2009.
Impact/Purpose:
the purpose is to investigate the potential impact of geologic sequestration on USDWs, the vadose zone, and indoor air
Description:
It is widely acknowledged that leakage through transmissive faults (and associated fractures) and well penetrations (operational, non-operational, and abandoned wells) are the most likely pathways for migration out of a storage formation at sites selected for geological sequestration. Leakage through transmissive faults and well penetrations could result in: (1) intrusion of CO2 or brine into an underground sources of drinking water (USDWs), (2) release of CO2 to the vadose zone and the atmosphere, and (3) intrusion of CO2 into buildings. Release of CO2 or brine into a USDW could be accompanied by measurable alteration in pH, major ions, and mobilization of hazardous inorganic compounds. Release of CO2 into the vadose zone could be accompanied by compositional changes in soil gas. Intrusion of CO2 into buildings could result in unsafe concentrations of CO2 and reduction in O2 in indoor air. Ongoing research investigating the potential impact of geologic sequestration on USDWs, the vadose zone, and indoor air will be discussed.
URLs/Downloads:
USE OF SOIL-GAS, GAS FLUX, AND GROUND-WATER MONITORING TO EVALUATE POTENTIAL LEAKAGE TO UNDERGROUND SOURCES OF DRINKING WATERAbstract
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