USDWs

National Carbon Capture Conference and Expo, Des Moines

November 8, 2022

Meet SCS Engineers professionals at the National Carbon Capture Conference & Expo, November 8-9, 2022 in Des Moines, Iowa.

Produced by Carbon Capture Magazine and BBI International, the National Carbon Capture Conference & Expo is designed for companies and organizations advancing technologies and policy that support the removal of carbon dioxide (CO2) from all sources, including fossil fuel-based power plants, ethanol production plants and industrial processes, as well as directly from the atmosphere.

SCS professionals are speaking at the conference, including:

Charles Hostetler is presenting on “Optimize Protection of USDWs – Minimize the Site-Wide False Positive Rate”

Kacey Garber is presenting on “Potential Geochemical Effects of CO2 and Brine Leakage on a Dilute Aquifer and Implications for CCUS Testing and Monitoring Plans”

 

The National Carbon Capture Conference will focus on research, data, trends and information on all aspects of CCUS with the goal to help companies build knowledge, connect with others, and better understand the market and carbon utilization. Presentation topics will include: Tax Policy; Impact on Carbon Intensity of all Forms of Energy; Required Plant Infrastructure; Environmental Permitting; Pipeline Requirements and Construction; Low Carbon Fuel Markets and Mandates; Project Development; Turning Carbon into Value; New Technologies Driving the Industry; and Reducing the Carbon Footprint of Concrete.

The conference continues to take shape.  For current details and registration information, click here.

 

 

 

Posted by Laura Dorn at 12:00 am

Optimize Protection of USDWs

August 1, 2022

 

Optimize Protection of USDWs – Minimize the Sitewide False Positive Rate

 

EPA permit requirements for Class VI injection wells explicitly include incorporating a Testing and Monitoring Plan to optimize protection of USDWs – Underground Sources of Drinking Water. The regulatory requirement is for periodic monitoring of groundwater quality above the confining zone that may result from injection fluid movement through the confining zone. Testing and monitoring plans usually implement an antidegradation strategy. Take sufficient background data to characterize the statistical distributions of groundwater quality parameters before operation. Then the same water quality parameters are sampled periodically during and after injection and compared to the background. Any statistically significant increases over the background are investigated as a possible result of injectate migration above the confining zone.

To make the detection monitoring program more robust, there is a tendency to increase the number of well/parameter pairs in the monitoring network. This is done by adding additional wells to decrease well spacing and by adding monitoring parameters to make sure that nothing gets missed. Paradoxically, this tendency decreases the statistical power of the groundwater monitoring network by increasing the sitewide false positive rate (i.e., the number of false positive detections increases, often to an unreasonable degree). Each apparent statistically significant increase involves a costly investigation with greatly increased complexity. In this talk, we examine the sitewide false positive rate for sitewide groundwater monitoring networks and its relationship to the number of well/parameter pairs and discuss how hydrologic and geochemical knowledge and characterization can be used to build a more robust and cost-effective groundwater monitoring plan that is protective of USDWs near Class VI injection wells.

 

To attend this live presentation, register for the upcoming National Carbon Capture Conference November 8-9 in Des Moines, Iowa. Visit SCS Engineers at booth 120. Meet Charles Hostetler.

 

 

 

 

 

Posted by Diane Samuels at 11:06 am