Predicting the Behavior of Potential Receptors
NRAP models for receptors are used to predict potential impacts to groundwater or the atmosphere resulting from the release of CO2 and/or brine.
NRAP is utilizing and adapting several research codes for the simulation of the impacts of brine and/or CO2 introduced into a groundwater aquifer. Detailed process models have been developed for two endmember aquifers, and these have been used to develop accompanying ROMs. One detailed model was developed for a confined sandstone aquifer using data for the High Plains aquifer implemented using LLNL’s NUFT-C; one detailed model was developed for an unconfined carbonate aquifer based on data from the Edwards’ aquifer and implemented using LANL’s FEHM to calculate flow and PNNL’s STOMP to simulate chemical reactions. Each of these detailed models was used to simulate TDS and pH plumes due to CO2 and brine leakage.
NRAP has used these detailed models to develop a suite of ROMs for predicting impacts to two endmember groundwater aquifers. The ROMs were generated through the use of LLNL’s PSUADE, which used the process models to develop response surfaces.
These ROMs have been incorporated into the CO2-PENS system platform for integrated assessment modeling.