No-Impact Threshold Values for NRAP's Reduced Order Models

Last, George V.; Murray, Christopher J.; Brown, Christopher F.; Jordan, Preston D.; Sharma, Maneesh

doi:10.2172/1158524

Title: No-Impact Threshold Values for NRAP's Reduced Order Models

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Abstract

The purpose of this study was to develop methodologies for establishing baseline datasets and statistical protocols for determining statistically significant changes between background concentrations and predicted concentrations that would be used to represent a contamination plume in the Gen II models being developed by NRAP’s Groundwater Protection team. The initial effort examined selected portions of two aquifer systems; the urban shallow-unconfined aquifer system of the Edwards-Trinity Aquifer System (being used to develop the ROM for carbon-rock aquifers, and the a portion of the High Plains Aquifer (an unconsolidated and semi-consolidated sand and gravel aquifer, being used to development the ROM for sandstone aquifers). Threshold values were determined for Cd, Pb, As, pH, and TDS that could be used to identify contamination due to predicted impacts from carbon sequestration storage reservoirs, based on recommendations found in the EPA’s ''Unified Guidance for Statistical Analysis of Groundwater Monitoring Data at RCRA Facilities'' (US Environmental Protection Agency 2009). Results from this effort can be used to inform a ''no change'' scenario with respect to groundwater impacts, rather than the use of an MCL that could be significantly higher than existing concentrations in the aquifer.

Authors:

Last, George V. ^[1]; Murray, Christopher J. ^[1]; Brown, Christopher F. ^[1]; Jordan, Preston D. ^[2]; Sharma, Maneesh ^[3]

Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
West Virginia Univ., and National Energy Technlogy Lab., Morgantown, WV (United States)

Publication Date:: Fri Feb 01 00:00:00 EST 2013

Research Org.:: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1158524

Report Number(s):: PNNL-22077
AA9010200

DOE Contract Number:: AC05-76RL01830

Resource Type:: Technical Report

Country of Publication:: United States

Language:: English

Subject:: 54 ENVIRONMENTAL SCIENCES; 58 GEOSCIENCES; Carbon Sequestration, Threshold Values, Reduced Order Models, NRAP

Citation Formats


                    Last, George V., Murray, Christopher J., Brown, Christopher F., Jordan, Preston D., and Sharma, Maneesh. No-Impact Threshold Values for NRAP's Reduced Order Models.  United States: N. p., 2013. 
        Web.  doi:10.2172/1158524.

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                    Last, George V., Murray, Christopher J., Brown, Christopher F., Jordan, Preston D., & Sharma, Maneesh. No-Impact Threshold Values for NRAP's Reduced Order Models.  United States.  https://doi.org/10.2172/1158524

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                    Last, George V., Murray, Christopher J., Brown, Christopher F., Jordan, Preston D., and Sharma, Maneesh. 2013.  
        "No-Impact Threshold Values for NRAP's Reduced Order Models".  United States.  https://doi.org/10.2172/1158524.  https://www.osti.gov/servlets/purl/1158524.

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@article{osti_1158524,

  title        = {No-Impact Threshold Values for NRAP's Reduced Order Models},

  author       = {Last, George V. and Murray, Christopher J. and Brown, Christopher F. and Jordan, Preston D. and Sharma, Maneesh},

  abstractNote = {The purpose of this study was to develop methodologies for establishing baseline datasets and statistical protocols for determining statistically significant changes between background concentrations and predicted concentrations that would be used to represent a contamination plume in the Gen II models being developed by NRAP’s Groundwater Protection team. The initial effort examined selected portions of two aquifer systems; the urban shallow-unconfined aquifer system of the Edwards-Trinity Aquifer System (being used to develop the ROM for carbon-rock aquifers, and the a portion of the High Plains Aquifer (an unconsolidated and semi-consolidated sand and gravel aquifer, being used to development the ROM for sandstone aquifers). Threshold values were determined for Cd, Pb, As, pH, and TDS that could be used to identify contamination due to predicted impacts from carbon sequestration storage reservoirs, based on recommendations found in the EPA’s ''Unified Guidance for Statistical Analysis of Groundwater Monitoring Data at RCRA Facilities'' (US Environmental Protection Agency 2009). Results from this effort can be used to inform a ''no change'' scenario with respect to groundwater impacts, rather than the use of an MCL that could be significantly higher than existing concentrations in the aquifer.},

  doi          = {10.2172/1158524},

  url          = {https://www.osti.gov/biblio/1158524},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Fri Feb 01 00:00:00 EST 2013},

  month        = {Fri Feb 01 00:00:00 EST 2013}

}

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