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  • Slide 1
  • The Injection Connection: A Regulatory Framework for Geologic Sequestration of Anthropogenic Carbon Dioxide 2010 Diane Perkins All Rights Reserved
  • Slide 2
  • Geologic Sequestration of Anthropogenic Carbon Dioxide The process of injecting CO 2 captured from an emission source (such as a power plant or industrial facility) into deep subsurface rock formations for long-term storage.
  • Slide 3
  • Reay, Dave and Michael Pidwirny (Lead Authors); Jay Gulledge and Sidney Draggan (Topic Editors). 2010. "Carbon dioxide." In: Encyclopedia of Earth. Eds. Cutler J. Cleveland (Washington, D.C.: Environmental Information Coalition, National Council for Science and the Environment). [First published in the Encyclopedia of Earth September 27, 2006; Last revised January 3, 2010; Retrieved March 22, 2010]. http://www.eoearth.org/article/Carbon_dioxide
  • Slide 4
  • CO 2 /Temperature on the Rise Kitchen, John, CO 2 Research in the Institute for Advanced Energy Solutions, 6-24-10, www.cmu.edu/steinbrenner/.../co2-iaes-research-kitchin- steinbrenner-AM3.ppt
  • Slide 5
  • Sources of Anthropogenic Carbon Dioxide U.S. Department of Energy, 2008, Carbon Sequestration Atlas of the United States and Canada, second edition; National Energy Technology Laboratory, Office of Fossil Fuels, p.17.
  • Slide 6
  • Why Geologic Sequestration Now? CO 2 designation as pollutant Greenhouse Gas Rule Class Action Litigation Pending Congressional legislation
  • Slide 7
  • CO 2 Emission Reduction Solution that Rocks: Geologic Sequestration is one solution to removing excess CO 2 from the atmosphere. Technically feasible CO 2 stored/possibly recoverable for re-use Geologic storage safely used for storage of natural gas
  • Slide 8
  • And the process begins.. EPA initiated series of technical workshops in 2005 through 2008 Reservoir Modeling and Simulation Risk Assessment Site Characterization for Storage State Regulators Workshop Well Construction and Mechanical Integrity Geologic Setting and AOR Considerations Measurement, Monitoring and Verification
  • Slide 9
  • EPA also held: Two stakeholder workshops (2007 and 2008) A series of public webinars on financial responsibility Two public hearings; one concerning a Notice of Data Availability (NODA) the other concerning proposed regulations.
  • Slide 10
  • EPA Proposed Rules July 25, 2008 o EPA proposed rules for geologic carbon sequestration under the Safe Drinking Water Act (SDWA), Underground Injection Control (UIC) Program.
  • Slide 11
  • EPA Working on Final Rule Issued a Notice of Data Availability (NODA), August 2009- Key scientific research, pilot project findings and technical issues not addressed in 2008 proposed rule. Final rule anticipated late 2010/early 2011.
  • Slide 12
  • Well Classed Class I- Inject hazardous wastes or industrial non-hazardous, municipal wastewater beneath lowermost USDW Class II-Inject fluids in connection with conventional oil or natural gas production Class III-Mineral extraction
  • Slide 13
  • EPA proposal creates new class of injection well Class IV-Inject hazardous or radioactive waste into or above USDW Class V-All other wells that inject non-hazardous fluids above or below USDW, experimental technology wells Class VI-Geologic Sequestration wells
  • Slide 14
  • UIC Program Primacy 33 States have primary enforcement authority (primacy) for the UIC program; EPA and States share program implementation in 7 States; EPA directly implements the entire UIC Program in 10 states
  • Slide 15
  • UIC in Texas Texas Commission on Environmental Quality (TCEQ) has primacy for Class I, III, IV and V wells. Texas Railroad Commission (RRC) has primacy for Class II wells.
  • Slide 16
  • Texas Senate Bill 1387, 81 st Legislature (Regular Session 2009) 9-1-2009 Texas RRC delegated jurisdiction over over the injection of anthropogenic carbon dioxide into productive formations and saline formations for the purpose of geological storage; Requires RRC to develop rules; Requires coordination with TCEQ; Requires RRC, TCEQ and UT-BEG to report to legislature the appropriate agency to regulate long-term storage of carbon dioxide into non-oil, gas producing formations;
  • Slide 17
  • Texas Senate Bill 1387, 81 st Legislature (Regular Session 2009) Requires GLO, RRC, TCEQ and BEG to develop recommendations for managing geologic storage on state-owned lands; storage capacity, legal and regulatory frameworks; Directs that the storage owner owns the anthropogenic CO 2 in storage and authorizes the RRC to regulate the withdrawal of CO 2 ; Directs that RRC rules be consistent with USEPA and requires RRC to seek enforcement primacy for the program.
  • Slide 18
  • Why RRC? History Experience
  • Slide 19
  • Why RRC? Enhanced oil and gas recovery operations will remain regulated as Class II wells. RRC has extensive knowledge of oil and gas reservoirs in Texas (contained oil/water/gas for millions of years).
  • Slide 20
  • RRC proposed rules March 26, 2010 16 TAC Chapter 5 Comment period ended 4/26/2010
  • Slide 21
  • TCEQ Regulatory Role TCEQ will review application; AoR, corrective action plans, monitoring requirements, post-injection site care plans. Provide impact letter to RRC. No specified timeframe review of application documents.
  • Slide 22
  • TCEQ Proposed Rules March 3, 2010 TCEQ created new Subchapter N in Chapter 331 to implement SB 1387. Rule adopted 8/20/2010. Anticipated publication of final rule September 10,2010.
  • Slide 23
  • Foundation for EPA Proposed Rules To develop Class VI proposed regulations, EPA used the Class I UIC (Hazardous Waste) regulations as a starting point. But added rules that covered special considerations of: Large volumes of gas to be injected; Buoyancy of fluid; Viscosity (mobility) of gas; Corrosivity of CO 2.
  • Slide 24
  • EPA punted question of whether anthropogenic CO 2 is hazardous waste : EPA cannot make a categorical determination as to whether injected CO 2 is hazardous under RCRA. Owner or operators will need to characterize their CO 2 streams as part of their permit application
  • Slide 25
  • But CERLA Federally permitted releases (including SDWA-UIC) are exempted from CERCLA liability. Permits must be structured so they do not authorize inappropriate hazardous releases. CO 2 may contain hazardous substances, i.e. mercury; CO 2 may react with groundwater or formation to form sulfuric acid or release heavy metals into solution.
  • Slide 26
  • EPA Proposed Rules UIC Program Elements Site Characterization Area Of Review Well Construction Well Operation Site Monitoring Post-Injection Site Care Public Participation Financial Responsibility Site Closure
  • Slide 27
  • Site Characterization Basic requirements for Industrial UIC Wells Injection zone that can accept fluids Confining zone (system) above the injection zone, that contains all fluids Owners and Operators submit information on the following: Structure and stratigraphy Seismicity Baseline geochemistry EPA Proposed Rules Director has discretion to require identification of additional confining zones Additional zones may be used for: Pressure dissipation Monitoring Confining Zone Injection Zone USDWs
  • Slide 28
  • Area of Review (AoR)- The region surrounding the project that may be impacted by injection activity. Basic requirements for Industrial UIC Wells Delineate the AoR (2 mile radius); Identify and evaluate all artificial penetrations and other features that may allow upward migration of fluids; Plug and or remediate as appropriate. EPA Proposed Rules Use computational modeling to determine AoR radius; AoR reevaluation at a minimum of every 10 years.
  • Slide 29
  • Well Construction Basic requirements for Industrial UIC Wells Well components engineered to ensure protection of USDWs Cased and cemented to prevent movement of fluids into an USDW; Surface casing and long string casing ; Tubing and packer. Annulus Packer Tubing Long- string casing Cement Wellhead Surface casing
  • Slide 30
  • Well Construction (continued) EPA Proposed Rules Inject below the lowermost USDW Long-string casing cemented in place for entire length Surface casing installed and cemented through the base of the lowermost USDW Well materials must be compatible with injectate and formation fluids
  • Slide 31
  • Well Testing and Operation Basic requirements for Industrial UIC Wells Procedures to ensure integrity of the well before, during, and after injection Injection may not fracture injection zone Monitor injection pressure, flow rate and volumes, and the nature of the injected fluid Perform mechanical integrity tests EPA Proposed Rules Continuous internal well mechanical integrity tests (MIT) and annual external MITs Injection pressure should not exceed 90 percent of fracture pressure in the injection system
  • Slide 32
  • Site Monitoring EPA Proposed Rules Tracking of the plume movement and pressure front is required, but techniques, frequency, and spatial resolution are not specified; Surface-air and soil-gas monitoring are at

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