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I2M Associates, LLC offers experienced engineers, geologists, hydrogeologists, and other scientists with many years in environmental assessments, including remediation management, mineral exploration and mining, project management, and mergers and acquisitions. Related areas of expertise include forensic and feasibility studies in the environmental and mining industries, and environmental site assessments, due diligence assessments, and impact assessments in addition to brownfield redevelopment and management (as well as grant application assistance) in the U.S, and for state and the U.S. governments, and the legal community around the U.S.

Case Histories

Contact I2M Associates, LLC

1810 Elmen Street, Houston, Texas 77019

Phone: 713.807.0021

Mobile: 713.248.1708

Fax: 713.807.0985

James L. Conca, Ph.D. Curriculum Vitae

James L. Conca, Ph.D. Curriculum Vitae 2017-06-08T19:27:04+00:00

James L. Conca, Ph.D.SENIOR MANAGEMENT ASSOCIATE

UFA Ventures, Inc.
2801 Appaloosa Way, Richland, WA 99352
Phone: 509-205-7541
Email: james@ufaventures.com

Education

Ph.D. Geochemistry, June 1985, California Institute of Technology, Pasadena, CA
Thesis Title: Differential Weathering Effects and Mechanisms
Advisors: Robert P. Sharp, Barclay Kamb and George R. Rossman
Recipient of the Antarctic Service Medal of the United States

M.S. Geochemistry, June 1981, California Institute of Technology, Pasadena, CA
Thesis Title: Sputtering of Dirty-Ice by Protons on Ganymede as a Formation Mechanism for Dark-Ray Craters
Advisor: Gene Shoemaker
Recipient of the ARCS Foundation Award

B.S. Geology/Biology, Magna Cum Laude, June 1979, Brown University, Providence, RI
Research Topic: Further Experiments in the Chemical Origin of Life with Specific Geologic Boundary Conditions
Advisor: Hendrick Gerritsen
Recipient of the Department of Geology Research Award and Mathematics Association of America Award

Experience

Forbes 2012 – present, Richland, WA
Weekly contributor to Forbes on energy and nuclear issues (more).

Contributor to The Hill, Nuclear Insider and other news outlets. Expertise on energy markets, nuclear and fuels analyses, waste disposal and disposition, economic and political analyses, energy and fuels market predictions.

  • Member and Advisor to the AAPG EMD Uranium (Thorium and Rare Earths) Committee for U-Market Analyses and Status
  • Member American Nuclear Society

Author and Speaker 2007 – present
Author and Speaker on issues involving Nuclear, Energy and the Environment, stressing the need for science-based decision-making that also understands the geopolitical and economic realities of the globe. Design, discuss and work to implement an optimal and strategic energy mix for America, and the world, that is achievable by mid-century, working iteratively with the Department of Energy, elected officials, industry, academia and the general public.

  • Trustee of the Herbert M. Parker Foundation
  • Adjunct Professor at Washington State University in the School of the Environment
  • Affiliate Scientist for Los Alamos National Laboratory
  • Consultant of Uranium Market and Disposition Issues
  • Public Outreach on energy and environmental issues
  • Training and Planning for various international HLW programs
  • Frequent speaker to local, state and federal elected officials and their staff
  • Curricula Developer for the Student Energy Education Initiative

UFA Ventures, Inc. March 2014 – present, Richland, WA
Chief Technical Officer Senior Scientist responsible for design and execution of remediation systems for radiological, heavy metal and organic contaminants in water, soil and waste, at DOE and industrial sites. Emphasizing natural processes over costly engineered systems ensures success over geologic time, while minimizing costs and assuring compliance with Federal license and State permit requirements. Technology development and commercialization for environmental remediation and monitoring, particularly for heavy metals/radionuclide and volatile organic compounds.

  • Remediation of Uranium Contamination at Paducah, Mining Sites and other Locations
  • Strategic Planning for DOE/WRPS
  • Member of the American Society of Mining and Reclamation

RJLee Group, Inc. January 2011 – March 2014, Richland, WA
Director of the Center for Laboratory Sciences Chief Executive Officer for CLS, responsible for management of scientific programs, accreditations, facilities, operation and budget, of the 15,000 sq ft monitoring and analytical laboratories in this low-level radiological facility, focused on industrial hygiene (asbestos, Be, VOCs, air monitoring), contaminant remediation (heavy metals, organics, soil and water), litigation technical support, industrial forensics, and general analytical chemistry.

Designed, constructed and certified the Mobile Organic Monitoring Laboratory, incorporating the latest Proton Transfer Reaction Mass Spectrometer, a GC-Mass Spec with thermal desorption and summa can capabilities and other gas analyzers to determine VOC concentrations in ambient air in real time at ppt levels under any environmental conditions (PTR-MS mobile lab). Established CLS as the US Distributor for IONICON technologies.

Senior Scientist Liaison with federal, state and local government agencies and clients, state and federal congressional delegations, industry leaders, and the public on energy, radiological and environmental issues, particularly associated with nuclear and alternative energy.

Director of the WSCF Laboratories, Hanford Site Chief Executive Officer for the Waste Sampling and Characterization Facility, responsible for management of scientific programs, facilities, operation and budget, and 167 personnel, as part of the Mission Support Alliance for DOE‘s Hanford Site.

  • Member ASTM Committee E54 Homeland Security Applications

NMSU Institute for Energy and the Environment 2009-2010, Richland, WA
Senior Scientist on special assignment to the Hanford Site to determine alternative disposal paths for high level waste tanks based upon waste type and chemical evolution over the last several decades. Work with DOE and site contractors to evaluate possible paths forward, their congruence with existing law, how these fit with the developing recommendations of the President’s Blue Ribbon Commission and the effects on these pathways from the new stasis of the YMProject.

Develop sustainable energy distributions for the Nation and the World that meet various legislative, economic and environmental goals set forth by the Administration, Congress, State Legislatures and each Office of the Governor, and includes nuclear energy as a substantial portion. To help resolve misunderstandings of the public and elected officials with respect to each of the energy sources, their waste disposal issues, their applications to society and their life-cycle impacts on the environmental and economic health of the country.

  • Recipient of a $900k grant from DOE for energy outreach to develop educational presentations, handouts materials, website development and course curricula to better inform the public, elected officials, students and teachers on the key issues surrounding energy in general, and nuclear in particular, and to travel to D.C., and key venues suggested by DOE and NMSU, to deliver this information to specific audiences and lawmakers

NMSU Carlsbad Environmental Monitoring and Research Center 2004-2010, Carlsbad, NM
Director Chief Executive Officer, responsible for management of scientific/technical programs, facilities, accreditations, operation and budget, personnel, obtaining funding, conflict resolution and supervision of NMSU staff together with WTS, LANL and LES NEF staff. Fostering collaborative and interdisciplinary work among four independent entities under one roof and under one radioactive materials license, for investigating and monitoring the WIPP underground nuclear repository with various other research and development programs associated with nuclear energy, non-proliferation, and nuclear waste disposal. Liaison with federal, state and local government agencies, state and federal congressional delegations, industry leaders, and the public on energy distributions and strategies, radiation safety and nuclear issues nation-wide, and regulatory, health and safety issues in the region. Active research in the areas of radioactive waste disposal, energy policy, dirty bomb mitigation and recovery, remediation of acid mine drainage, military base clean-up, and contaminant flow and transport in arid regions. Coordinator for Science and Public Outreach.

  • Construction of State-Of-The-Art Uranium Enrichment Laboratory for HAT Measurements for NEF
  • Construction of a State-Of-The-Art Plutonium Research Laboratory for LANL
  • Clean-up of U, Tc, Np, Cd, Zn and Cu at DOE’s Paducah Site
  • Three-time Recipient of the President’s Millionaire Researchers Award
  • Member American Council On Renewable Energy Higher Education Committee
  • Board Member to the New Mexico State MESA Public School Program
  • Recipient of the American Nuclear Society Logistics Award 2006
  • Member DHS LLIS Radiological Dispersal Device Incident Response Planning Working Group
  • Voting Member, Board of Directors, Carlsbad Department of Development
  • Professional Geoscientist in the State of Texas (License #3545)

Los Alamos National Laboratory (LANL) 1999-present, Los Alamos and Carlsbad, NM
Affiliate Scientist, 2004 to present
Team Leader, Repository Science, October 2000 to 2004
Section Leader, Radionuclide Geochemistry, March 1999 to October 2000

  • Project Leader for Actinide Chemistry and Repository Science
  • Supervised the efforts of 41 diverse scientific and technical staff.
  • Managed, coordinated and co-authored the Unsaturated Zone Transport Analysis and Modeling Report (AMR) for contribution to the Site Selection and License Application for Yucca Mountain as the geologic repository for high level nuclear waste.
  • PI on development of engineered barrier systems for emplacement at WIPP
  • PI on RDD research for developing alternative matrices to 137CsCl for reducing dispersibility
  • PI on the DoD Environmental Security Technology Certification Program (ESTCP) Project for Remediation of Small Arms Firing Ranges.
  • Recipient of a ASTM Standards Development Award
  • Authored U.S. Patent 6,217,775 for Phosphate-Induced Metal Stabilization
  • The Carlsbad Schools Distinguished Performance Award for restoration of a local Planetarium
  • Appointed as Adjunct Professor in Chemistry at New Mexico State University, Las Cruces

UFA Ventures, Inc. 1994-1999, Richland, WA
CEO and Chief Scientist, October 1994 to March 1999

  • Entrepreneur and small business owner: Designed, funded, built and headed an innovative soils and materials testing laboratory, UFA Ventures, Inc., having unique capabilities including –
    • Developed the Unsaturated Flow Apparatus (UFA™: ASTM Standard Test Method D6527) as the first hydrogeochemical apparatus that allows direct measurement of transport parameters (K, D, ka, ψ, K, θ, G) in any porous media.
    • Lead scientist in a Cooperative Research And Development Agreement (CRADA) with Beckman Instruments to design and market the UFA.
    • Hired/trained staff to implement projects from bench to field, including expert data for litigation.
    • Provided support to clients in various litigation proceedings.
  • Begun as a DOE small-business spin-off
  • Recipient of the U.S. DOE’s Innovative Concepts Award.

Washington State University at Tri-Cities 1990-1996, Richland, WA
Research Faculty in Environmental Science

  • Obtained funding to establish, build and equip the Earth and Environmental Sciences Laboratory, for the investigation of subsurface transport and remediation technologies.
  • Developed curriculum for the new degree programs in Environmental Science
    • Graduated the first Ph.D. student from the new campus, and four Master’s students
    • Developed and taught fourteen courses over a six-year period.
  • President of the Pacific Northwest Region of the American Geophysical Union
  • Recipient of DOE’s Technology Transfer Award, and a DOE Richland Operations Manager’s Award

Pacific Northwest National Laboratory 1987-1990, Richland, WA
Geochemist, August 1987 to January 1990

  • Research scientist/Project Manager/Task Leader investigating hydrogeological phenomenon in the vadose zone.
  • Design and construction of a hydrogeochemical laboratory.
  • Task Leader and Cognizant Manager for the Gravel Barrier Technology Project and SubTask Leader for the Vapor Diffusion Task under the Grout Disposal Program.
  • Task Leader for Directed Percolation Around Waste Packages using Engineered and Natural Barriers.
  • Task Leader for Rubble Backfill Transport Properties Project for Yucca Mountain.
  • Developed curricula for DOE’s Science in Schools initiative.

NASA Jet Propulsion Laboratory 1985-1986, Radar Geologist/Field Mapping, Pasadena, CA
Coordinator of Shuttle Operations over Earth’s Polar Regions

Arizona State University, Department of Geology 1985-1987 Geochemist, Tempe, AZ

Uraniborg at St. Cloud State University (summers) 1983, 1984, 1985, 1986, St. Cloud, MN
Co-Director of summer Astronomy camp for Middle and High School students

Exxon Production Research, Reservoir Evaluation 1982 Geochemist, Houston, TX

Total Research Grants and Contracts: $46.2 million in grants/contracts from FY1990 to FY2010
Recent Hanford Budget $25.8 million in Contracts FY2011 to FY 2014

Lecture Series:

The GeoPolitics of Energy – achieving a just and sustainable energy distribution by 2040 (San Diego)(WWU)

The Cost of Carbon – the effects of State carbon plans

What’s Happened to Our Nuclear Waste Program?

The Actual Cost of Energy

Dirty Bombs – the terror and the truth

Science and Society – the cost of the Apollo Effect

Planetary Science – why Pluto is still a planet

Antarctica – ice and rock with life

Publications

Weekly science contributor to Forbes (more).

Contributor to other venues – The Hill, Nuclear Insider, Bulletin of the Atomic Scientist, OurEnergyPolicy, Energy For Humanity

Regular appearances on live media, news outlets and panels – Examples: NPR, PPI, NEI, America Tonight Al Jazeera, Santa Fe New Mexican, TV spot 1, TV spot 2, talk radio, talk radio2

Conca, J. (2016) “Environmental monitoring programs and public engagement for siting and operation of geological repository systems: experience at the Waste Isolation Pilot Plant (WIPP)“, Chapter 22 in Geological Repositories for Safe Disposal of Spent Nuclear Fuels and Radioactive Materials, J. Ahn and M. J. Apted (editors), Woodhead Publishing, Cambridge, UK, 2nd Edition (in press).

Wright, J. and J. Conca (2016) The Geopolitics of Energy: Achieving a Just and Sustainable Energy Distribution by 2040, 2nd Edition (in preparation).

Campbell, M.D., H.M. Wise, S.S. Sibray, R.W. Gregory, K.T. Biddle, J.L. Conca, G. Fries, M.A. Jacobs, K.S. Osvald, A.R. Renfro, S.B. Romberger and D. Rowlands (2016) Uranium (Nuclear Minerals and REE) Committee Annual Report presented in Calgary, Canada at the Energy Minerals Division (AAPG) Annual Conference, June 18, (more).

Campbell, M. D. and J. L. Conca, 2015, “Energy Competition in the Uranium, Thorium, and Rare Earth Industries in the U.S. and the World,” a chapter in the “Unconventional Energy Resources: 2015 Review” in the Journal of Natural Resources Research , Vol. 24, No.4, December, November 30, pp. 450-458, (more)

Conca, J. L. (2015) “Is Elon Musk’s new PowerWall a Game Changer?” Bulletin of the Atomic Scientist (more).

Campbell, M.D., H.M. Wise, S.S. Sibray, R.W. Gregory, K.T. Biddle, J.L. Conca, G. Fries, M.A. Jacobs, K.S. Osvald, A.R. Renfro, S.B. Romberger and D. Rowlands (2015) EMD Uranium (Nuclear Minerals and REE) Committee Mid-Year Report presented by teleconference at the Mid-Year Meeting (more).

Conca, J. (2015) Solar Energy: Thermal versus PV, p. 130-134, In Solar Energy by David E. Newton, ABC-CLIO Publishers, Santa Barbara, ISBN 978-1-61069-695-1

Conca, J. (2015) Foreword for Small Modular Reactor: Nuclear Power – Fad or Future? by Dan Ingersoll, Woodhead Publishing, Cambridge, UK, 202 p. ISBN-10: 0081002521

Conca, J. (2014) “High-Level Nuclear Waste Redefined”, Proc. 2014 Annual Meeting of the American Nuclear Society, ANS, La Grange, IL, Paper 10041.

Campbell, M.D., H.M. Wise, S.S. Sibray, R.W. Gregory, J.L. Conca, G. Fries, B. Handley, K.S. Osvald, A.R. Renfro, S.B. Romberger and D. Rowlands (2015) EMD Uranium (Nuclear Minerals and REE) Annual Committee Report presented in Denver at the Annual EMD Meeting (more).

Sears, J., T. Rogers, J. McCoskey, L. Lockrem, H. Watts, L. Pingel, and J. Conca (2013) “Proton Transfer Reaction Mass Spectrometry as a Real-Time Method for Continuous Soil Organic Vapor Detection” In: Continuous Soil Gas Measurements: Worst Case Risk Parameters, STP 1570, Lorne G. Everett and Zdenek Hejzlar, Eds., pp. 32–44, doi:10.1520/STP157020130026, ASTM International, West Conshohocken, PA. Available online at www.astm.org

Campbell, M. D., J.D. King, H.M. Wise, B. Handley, J.L. Conca, and M. David Campbell (2013) Nuclear power and associated environmental issues in the transition of exploration and mining on Earth to the development of off-world natural resources in the 21st century, in W. A. Ambrose, J. F. Reilly II, and D. C. Peters, eds., Energy resources for human settlement in the solar system and Earth’s future in space, AAPG Memoir 101, Tulsa, OK, p. 163–213. DOI:10.1306/13361569M1013548 (more).

Campbell, M.D., H.M. Wise, S.S. Sibray, R.W. Gregory, J.L. Conca, G. Fries, B. Handley, K.S. Osvald, A.R. Renfro, S.B. Romberger and D. Rowlands (2013) EMD Uranium (Nuclear Minerals and REE) Committee Mid-Year Report (more).

Thakur, P., J. L. Conca, C. J. Dodge, A. J. Francis and G.R. Choppin (2013) “Complexation thermodynamics and structural studies of trivalent actinide and lanthanide complexes with DTPA, MS-325 and HMDTPA”, Radiochimica Acta, vol. 101, 1–12. DOI 10.1524/ract.2013.2018 Oldenbourg Wissenschaftsverlag, München.

Thakur, P., J. L. Conca and G. R. Choppin (2012) “Mixed Ligand Complexes of Am3+, Cm3+ and Eu3+ with HEDTA and HEDTA + NTA – Complexation Thermodynamics and Structural Aspects,” Journal of Solution Chemistry, vol. 41, p. 599-615 p. http://www.springerlink.com/openurl.asp?genre=article&id=doi:10.1007/s10953-012-9826-3

Conca, J. L., and J. Wright (2012) “Deep Geologic Nuclear Waste Disposal – No New Taxes”, Proceedings of the 2012 Waste Management Symposia, Phoenix, AZ, paper #12469, p. 1-11. http://www.wmsym.org. Also, posted by the President’s Blue Ribbon Commission on America’s Nuclear Future December 14, 2011 http://www.wmsym.org/archives/2012/papers/12469.pdf

Thakur, P., J. L. Conca and G. R. Choppin (2011) “Complexation studies of Cm(III), Am(III), and Eu(III) with linear and cyclic carboxylates and polyaminocarboxylates,” Journal of Coordination Chemistry, vol. 64, p. 3214-3236. DOI:10.1080/00958972.2011.616927

Conca, J. and J. Wright (2011) Getting Real About Energy: A Balanced Portfolio for America’s Future, in the Progressive Fix, February 23, 2011, the Progressive Policy Institute, Washington, D.C., http://www.progressivefix.com/

Thakur, P., J. Monk and J. L. Conca (2011) Environmental monitoring of radioactive and non-radioactive constituents in the vicinity of WIPP, Proceedings in Radiochemistry – A Supplement to Radiochimica Acta 1, p. 269-278. DOI 10.1524/rcpr.2011.0047.
http://www.oldenbourg-link.com/toc/rcpr/1/1.

Thakur, P., S. Ballard and J. L. Conca (2010) “Sequential Isotopic Determination of Plutonium, Thorium, Americium and Uranium in air filter and drinking water samples around the WIPP Site,” Jour. of Radioanalytical and Nuclear Chemistry, vol. 287, p. 311-321. DOI 10.1007/s10967-010-0684-4.

Conca, J. and T. Kirchner (2010) “Environmental monitoring programs and public engagement for siting and operation of geological repository systems: experience at the Waste Isolation Pilot Plant (WIPP)“, Chapter 22 in Geological Repositories for Safe Disposal of Spent Nuclear Fuels and Radioactive Materials, J. Ahn and M. J. Apted (editors), Woodhead Publishing, Cambridge, UK, p. 678-718.

Conca, J. and J. Wright (2010) “The Cost of a Sustainable Energy Future”, Proceedings of the 2010 Waste Management Symposia, Phoenix, AZ, paper #10494, p. 1-14. http://www.wmsym.org.

Conca, J. L. and J. Wright (2009) “A Single, Global, Small-User, Nuclear Repository”, ARIUS, Switzerland, No. 18, p. 9 – 12. http://www.arius-world.org/pdfs/AriusNewsletter18.pdf

Thakur, P., J. L. Conca, L. J. Van de Burgt and G. R. Choppin (2009) “Complexation and the Laser Luminescence Study of Eu(III), Am(III) and Cm(III) with EDTA, CDTA and PDTA and their Ternary Complexation with Dicarboxylates,” Journal of Coordination Chemistry, Vol. 62, No. 23, p. 3719–3737.

Conca, J. L. (2009) Developing Safe and Sustainable Energy, International Innovation Magazine, J. Dallison (editor), August edition, United Kingdom, ISSN 2041-4552, p. 19 – 21.

Conca, J. L. (2006 – 2009) Annual reports of the Carlsbad Environmental Monitoring and Research Center, www.cemrc.org.

Parra, R. R., V. F. Medina, and J. L. Conca (2009) “The use of fixatives for response to a radiation dispersal device attack – a review of the current state-of-the-art”, Journal of Environmental Radioactivity, vol. 100, p. 923 – 934.

Conca, J. and J. Wright (2009) “A Single Global Nuclear Repository”, Proceedings of the 2009 Waste Management Symposia, Phoenix, AZ, paper #9085, p. 1-9. http://www.wmsym.org. http://www.wmsym.org/index.php?option=com_content&view=article&id=138&Itemid=112.

Wright, J. and J. L. Conca (2009) The GeoPolitics of Energy: Engaging the Public and Policymakers. Proceedings of the 2009 Waste Management Symposia, Phoenix, AZ paper #9557, p. 1-10. http://www.wmsym.org/index.php?option=com_content&view=article&id=138&Itemid=112.

Conca, J. L. and J. Wright (2008) “Thakur, P., S. Ballard and J. L. Conca (2010) “Sequential”, in International Seminars on Nuclear War and Planetary Emergencies, 38th Session, The Science and Culture Series – Nuclear Strategy and Peace Technology, R. Ragaini, editor, World Scientific – Imperial College Press, ISBN 978-981-283-463-8, p. 271-280.

Conca, J., S. Sage and J. Wright (2008) “Nuclear Energy and Waste Disposal in the Age of Recycling,” New Mexico Journal of Science, vol. 45, p. 13-21 http://www.nmas.org/NMJoS-Volume-45.pdf

Wright, J. and J. Conca (2007) The Geopolitics of Energy: Achieving a Just and Sustainable Energy Distribution by 2040, Booksurge Publishing, Charleston, SC. ISBN 1‑4196-7588-5. http://www.amazon.com/gp/product/1419675885/sr=1-10/qid=1195953013/

Conca, J. L. and M. Apted (2007) Nuclear Energy and Radioactive Waste Disposal in the Age of Recycling, In GLOBAL ’07 – Advanced Nuclear Fuel Cycles and Systems, American Nuclear Soc, p. 1-8.

Martin, W.A., S. L. Larson, D.R. Felt, J. Wright, C.S. Griggs, M. Thompson, J.L. Conca, and C. Nestler (2007) “The effect of organics on lead sorption onto Apatite II,” Applied Geochemistry, vol. 23, p. 34-43.

Campbell, M., H. Wise, J. Evensen, B. Handley, S. Testa, J. Conca and H. Moore (2007) Nuclear Power: Winds of Change, Uranium Committee Annual Report, Amer. Assoc. of Petroleum Geologists Energy Minerals Division, Tulsa, OK (more).

Conca, J. L. and M. H. Reynolds (2006) “Dirty Bombs, practical plans,” Homeland Protection Professional, May 2006 issue, p. 18-22 http://pimsnw.com/files/5responseguidancehpp.pdf

Conca, J. L. and J. Wright (2006) “An Apatite II permeable reactive barrier to remediate groundwater containing Zn, Pb and Cd,” Applied Geochemistry, vol. 21, p. 2188-2200.

Conca, J. (2006) “A 12-Point Response to a Dirty Bomb Attack,” Transactions of the American Nuclear Society, La Grange, IL, vol. 95.

Mie, D., J. L. Conca, C. den Auwer, R. I. Gabitov, N. J. Hess, P Paviet-Hartmann, P. D. Palmer, V. LoPresti and S. D. Conradson (2006) “Chemical speciation of heterogeneously reduced Pu in synthetic brines,” Radiochemica Acta, vol. 94, p. 249-259.

Martinez, M.N., S.S. Hightower, G.B. Smith, W. Mueller, J.L. Conca and J. Wright (2006) “The effect of Apatite II™ on the biodegradation of TNT and perchlorate in contaminated soil samples.” In Sustainable Range Management, Battelle Press, Columbus, OH. www.battelle.org.

Adams, B., N. Yancey, J. Conca and J. Wright (2006) “PRB Containing Processed Fish Bones Sequesters Metals from Ground Water”, Technology News and Trends, Environmental Protection Agency EPA 542-N-06-002, Issue 23, p. 5-7.

Raicevic, S., J. V. Wright, V. Veljkovic and J. L. Conca (2006) “Theoretical stability assessment of uranyl phosphates and apatites: Selection of amendments for in situ remediation of uranium,” Science of the Total Environment, vol. 355, p. 13-24.

Conca, J. (2006) “Addressing the Threat of a Serious 137Cs Dirty Bomb”, Proc. 14th Biennial Topical Meeting of the Radiation Protection and Shielding Division April 2-6, American Nuclear Society, La Grange, IL, p. 284-287.

Conca, J. L., M. Johnson, and J. R. Wischnewsky (2005) “Reducing the Threat of a Serious 137Cs Dirty Bomb,” in the Proceedings of the DHS Conference: Working Together: Research & Development (R&D) Partnerships in Homeland Security, Boston, MA, April 27–28, the Department of Homeland Security, Science and Technology Directorate, Section 4, p. 1-10.

Wright, J., J. L. Conca, and A. F. Slater (2005). PIMS with Apatite II: A field scale demonstration on a lead contaminated soil, Chapter 4 in Stabilisation/Solidification Treatment and Remediation, A. Al-Tabbaa and J, A. Stegemann, (eds), Taylor and Francis Group, London, ISBN 04 1537 460 X.

Wright, Judith and James L. Conca (2005) “PIMS™: Remediation of Soil and Groundwater Contaminated With Metals.” Environmental Security Technology Certification Program (ESTCP) Cost and Performance Report, (CU-0020), http://www.estcp.org/technology/er-heavy-metals.cfm, 50 pp.

Wright, J., Rice, K. R., B. Murphy, and J. Conca (2004) “PIMS Using Apatite II™: How It Works To Remediate Soil and Water,” in Sustainable Range Management-2004. Proceedings of the Conference on Sustainable Range Management, January 5-8, 2004, New Orleans, www.battelle.org, ISBN 1-57477-144-2, B4-05.

Raicevic, S., J. V. Wright, J. Vujic and J. L. Conca (2004) “Prediction of the Weathering Properties of Minerals Based on the Ion-Ion Interaction Potential,” Materials Res. Soc. Symp. Proc., v.824, p.455-460.

Wright, J., Rice, K. R., B. Murphy, and J. Conca (2004). “PIMS-Remediation of Pb-Contaminated Soil at Camp Stanley, Texas,” in Sustainable Range Management-2004. Proceedings of the Conference on Sustainable Range Management, January 5-8, 2004, New Orleans, www.battelle.org, ISBN 1-57477-144-2, B4-04.

Conca, J., E. Strietelmeier, N. Lu, S. D. Ware, T. P. Taylor, J. Kaszuba, and J. V. Wright (2003) “Treatability Study of Reactive Materials to Remediate Groundwater Contaminated with Radionuclides, Metals and Nitrates in a Four-Component Permeable Reactive Barrier,” Chapter 8, in Groundwater Remediation of Metals, Radionuclides, and Nutrients, with Permeable Reactive Barriers (eds. Naftz, Morrison, Davis, and Fuller), Elsevier Science, USA, p. 221-252.

Lu, N., Reimus, P., Parker, G., Conca, J., and Triay, I. R. (2003) “Sorption Kinetics and Impact of Temperature, Ionic Strength and Colloid Concentration on the Adsorption of Plutonium-239 by Inorganic Colloids,” Radiochimica Acta, vol. 91, p. 713-720.

Wright, J. and J. Conca (2003) Remediation of groundwater contaminated with Zn, Pb, and Cd using Apatite II.” Acta Mineralogica-Petrographica, Abstract Series 1, Szeged, Hungary. http://www.mineral.hermuz.hu/act_03/pdf/114.pdf

Wright, J. and J. L. Conca (2003) “PIMS With Apatite II™ for the Remediation of Uranium and Plutonium.” Proceedings of the Radiochemistry Conference, July 14-17, 2003, Carlsbad, NM.

Lu, N., J. L. Conca, T. Hartmann, P. Paviet-Hartmann, G. Parker, B. Martinez, and E. Strietelmeier (2003) “Solution Chemistry and Plutonium-239 Behavior in Synthetic Brines and Chloride Solutions after Exposure to Magnesium Oxide Backfill”, Los Alamos National Laboratory Technical Report LA-UR-02-3665, Los Alamos, NM.

Mason, C., J. L. Conca and G. V. Tuyle (2003) An Alternative Matrix for reducing the Threat of Radioactive Dispersal from 137Cs Sources, Los Alamos National Laboratory Technical Report LA-UR-03-0048, Los Alamos, NM.

Testa, S. and J. Conca (2002) In-Situ Restoration of Metals-Contaminated Sites, CRC Press, Boca Raton, ISBN 1566705886.

Taylor, T. P, N. N. Sauer, J. L. Conca, B. A. Strietelmeier, J. P. Kaszuba, M. W. Jones & S. D. Ware (2002) “Permeable Reactive Barrier Treatment Technology for Remediation of Inorganic-Contaminated Groundwater,” in Remediation of Chlorinated and Recalcitrant Compounds, A.R. Gavaskar and A. S. C. Chen (Editors), Battelle Press, Battelle Memorial Institute, Columbus, Ohio, vol. 2, 2A-05(1-8).

Wright, J. and J. Conca (2002) “Remediation of Groundwater and Soil Contaminated with Metals and Radionuclides using Apatite II, a Biogenic Apatite Mineral,” in Proceedings of the American Chemical Society Meeting, Boston, MA, American Chemical Soc., Vol. 42, No. 2.

Lu, N., P. Paviet-Hartmann, P. Palmer, T. Hartmann, J. L. Conca, E. Strietelmeier, and G. Parker (2002) Stability of 239Pu(VI) in Synthetic Brines, Chloride Solutions and Hydrochloric Acid, Los Alamos National Laboratory Technical Report LA-UR-02-4165, Los Alamos, NM.

Conca, J. L. and J. Wright (2001) Biogenic Apatite: From In Vivo to In Vitro Incorporation of Metals and Radionuclides Into Apatite Mineral Phases. In Proceedings of the Second Hydroxyapatite Congress, Schwind and Subramanian (eds.), Bio-Rad Labs, Berkeley, CA.

Lu, N., H. Xu, J. Wright, and J. Conca (2001) “PIMS – Remediation of Metal-Contaminated Groundwater and Soil Using a Special Reactive Form of the Mineral Apatite,” In Applied Mineralogy in Research, Economy, Technology, Ecology and Culture, Rammlmair, J. Mederer, Th. Oberthür, R.B. Heimann, and H. Pentinghaus (eds.), A.A.Balkema, Rotterdam (Publ.), ISBN 90 5809 163 5, Vol. 2, p. 603-606.

Conca, J. L. and J. V. Wright (2001) ASTM Standard Test Method D6527 “Determining Unsaturated and Saturated Hydraulic Conductivity in Porous Media by Steady-State Centrifugation,” Annual Book of ASTM Standards: Soil and Rock (II), Section 4, Volume 04.09, p. 868-877, American Society for Testing and Materials, West Conshohocken, PA.

Conca, J. L. (2001) Transport in Porous and Fractured Media of the Creede Formation, United States Geological Survey Open File Report 94-260-N, USGS, Reston, Virginia, p. 1-16.

Strietelmeier, B.A., M.L. Espinosa, M.W. Jones, J.D. Adams, E.M. Hodge, S.D. Ware, P.A. Leonard, P. Longmire, J.P. Kaszuba and J.L. Conca (2001) REMEDIATION OF NITRATE-CONTAMINATED GROUNDWATER USING A BIOBARRIER, in Proceedings of the 2001 Waste Management Conference, February 2001, Tucson, AZ.

Conca, J. L., A. Meijer, P. Reimus and J. Turin (2000) Analysis and Modeling Report U0100: Unsaturated Zone and Saturated Zone Transport Properties, ANL-NBS-HS-000019 REV 00, ICN 1. Office of Civilian Radioactive Waste Management, System Management and Operations, Department of Energy, Las Vegas, NV. 293 p.

Conca, J., Lu, N., Strietelmeier, E., Ware, S. D., Garcia, Jr., E., Jones, M., Espinosa, M., Martinez, B., Adams, J., Sauer, N. N., Taylor, T. P., Kaszuba, J., Triay, I., Longmire, P., Heller, P., and Wright, J. V. (2000) “Remediation of Metal-Contaminated Groundwater Using Permeable Reactive Barriers – Assembling a Reactive Media Toolbox,” in Proceedings from the 2000 Theis Conference, September 15-18, Jackson Hole, The National Ground Water Association (NGWA) and The Assoc. of Ground Water Scientists & Engineers (AGWSE), Westerville, OH.

Conca, J. L., N. Lu, G. Parker, B. Moore, A. Adams, J. V. Wright and P. Heller (2000) “PIMS – Remediation of Metal Contaminated Waters and Soils”, in Remediation of Chlorinated and Recalcitrant Compounds, (Wickramanayake, Gavaskar, Gibbs and Means, eds.) Battelle Memorial Institute, Columbus, Ohio, vol. 7, p. 319-326.

Conca, J. L. and J. Wright (2000) “The UFA Method for Characterization of Vadose Zone Behavior,” Chapter 3 In The Vadose Zone, (Looney and Falta, eds.) Battelle Press, Battelle Memorial Institute, Columbus OH, p. 1459 and Appendix 3.

Conca, J., D. G. Levitt, P. R. Heller, T. J. Mockler, and M. J. Sully (2000) “Recharge and Infiltration Distribution at the Nevada Test Site and the Hanford Site,” Chapter 5 In The Vadose Zone, (Looney and Falta, eds.) Battelle Press, Battelle Mem. Inst., Columbus OH, p. 1459 and App 5.

Conca, J. L. (2000) “Batch Kd Tests versus Column Rf tests,” Chapter 6 In The Vadose Zone, (Looney and Falta, eds.) Battelle Press, Battelle Mem. Inst., Columbus OH, p. 1459 and App 6.

Conca, J. L. and J. Wright (2000) “Aqueous Diffusion in the Vadose Zone,” Chapter 5 In The Vadose Zone, (Looney and Falta, eds.) Battelle Press, Battelle Mem. Inst., Columbus, OH, p. 796-797.

Conca, J. and J. V. Wright (2000) “PIMS: A Simple Technology for Clean-Up of Heavy metals and Radionuclides Throughout the World,” In: Environmental Challenges of Nuclear Disarmament, T. E. Baca and T. Florkowski, eds., Kluwer Acad. Publ., NATO Science Series, vol. 29, p. 223-236.

Lu, N., J. L. Conca, G. Parker, P. Leonard, B. Moore, E. Strietelmeier and I. Triay (2000)“Adsorption of actinides onto colloids as a function of time, temperature, ionic strength, and colloid concentration”, LANL Technical Report LA-UR-00-5121, Los Alamos, NM.
Conca, J. L. and J. V. Wright (2000) United States Patent #6217775 Treatment of metal-contaminated leachates utilizing fish bones and fish hard parts, (filed 1998, issued 2000) United States Patent Office, Washington, D.C.

Wright, J. V. and J. L. Conca (2000) STABILIZATION AND REMEDIATIN OF METAL-CONTAMINATED SOILS USING FISH BONES, (filed 2000) United States Patent Office, Washington, D.C.

Bostick, W. D., R. J. Jarabek, D. A. Bostick, and J. Conca (2000) “Phosphate-Induced Metal Stabilization: Use of Apatite and Bone Char for the Removal of Soluble Radionuclides in Authentic and Simulated DOE Groundwaters,” Advances in Envir. Res., vol. 3, p. 488-498.

Mason N. Lu, and J. L Conca (1999) “Radioactive Strontium- and Cesium-Contaminated Sites: Characterization, Transport, and Remedial Options,” in Proceedings of the Advanced Research Workshop: Nuclear Physical Methods in Radiological Investigations of Nuclear Test Sites, Almaty, Kazakhstan, June 7-10, 1999.

Nelson, P. and J. L. Conca, (2001) Present-Day Porosity and Permeability in Lacustrine Strata and Fallout Tuffs, United States Geological Survey Open File Report OFR 94-260, USGS, Reston, VA.

Conca, J., D. G. Levitt, P. R. Heller, T. J. Mockler, and M. J. Sully (1999) “Direct UFA Measurements of Unsaturated Hydraulic Conductivity, Comparisons to van Genuchten/Mualem Estimations, and Applications to Recharge Mapping in Arid Regions,” In Characterization and Measurement of the Hydraulic Properties of Unsaturated Porous Media, M. Th. van Genuchten, F. J. Leij and L. Wu (eds.), Univ. Calif., Riverside, CA, vol. 2, p. 1173-1197.

Mason, C.F.V., N. Lu, and J. Conca (1999) Characterization, Transport and remediation Options for Radioactive Strontium and Cesium Contaminated Sites, Los Alamos National Laboratory Technical Report LA-UR-99-3593, Los Alamos, NM.

Conca, J. L., M. Apted, W. Zhou, R. Arthur, and J. Kessler (1998) “Flow Barrier System for Long Term High-Level Waste Isolation: Experimental Results,” Nuclear Technology, vol.124, p.1-13.

Conca, J. L. (1998) Success Mine Apatite Remediation Project Using Apatite. Report to the Idaho State Department of Environmental Quality #QC038900.

Zhou, W., J. L. Conca, J. L. and J. Kessler (1998) “Numerical Simulation of Percolation Box Experiments on the Performance of a Richards Barrier,” Proceedings of the Tenth International High-Level Radioactive Waste Management Conference, American Nuclear Society, La Grange Park, Illinois, vol. 9, p. 474-476.

Conca, J. L. and J. V. Wright (1998) “The UFA Method for Rapid, Direct Measurements of Unsaturated Soil Transport Properties”, Australian J. of Soil Res., vol. 36, p. 291-315.

Conca, J. L., B. A. Robinson, I. R. Triay And G. Y. Bussod (1997) “Direct Characterization Of Transport Parameters In Near-Field And Engineered Backfill/Invert Materials Needed For Waste Isolation Strategies,” Scientific Basis for Nuclear Waste Management XX, Materials Research Society Symposium Proceedings, vol.465, p. 951-962.

Conca, J. L. (1997) Phosphate-Induced Metal Stabilization (PIMS). Final Report to the U. S. Environmental Protection Agency #68D60023.

Chen, X.-B., J. V. Wright, J. L. Conca, and L. M. Peurrung (1997) “Effects of pH on Heavy Metal Sorption on Mineral Apatite”, Environmental Science and Technology , vol. 31, p.624-631.

Chen, X.-B., J. V. Wright, J. L. Conca, and L. M. Peurrung (1997) “Evaluation of Heavy Metal Remediation Using Mineral Apatite”, Water, Air and Soil Pollution, vol. 98, p. 57-78.
I. R. Triay, A. Meijer, J. L. Conca, K. S. Kung, R. S. Rundberg and B. A. Strietelmeier (1997) Summary and Synthesis Report on Radionuclide Retardation for the Yucca Mountain Site Characterization Project, R. C. Eckhardt (ed), Los Alamos National Laboratory Technical Report LA-13262-MS, Los Alamos, NM, 286 p.

Conca, J. L. (1996) “New technology for measuring transport in soil and rock,” Environmental Waste Reporter, vol. 1, p. 30-31.

Zhou, W., J. L. Conca, R. Arthur, and M. Apted (1996) Analysis and Confirmation of Robust Performance for the Flow-Diversion Barrier System within the Yucca Mountain Site, EPRI Technical Report TR-107189, Electric Power Research Institute, Palo Alto, California.

Moody, T. E. and J. L. Conca (1996) Permeable Barrier Materials for Strontium Immobilization, Bechtel Hanford Technical Report BHI-00857, Bechtel Hanford, Inc., Richland, Washington.

Conca, J. L. and Triay, I. R. (1996) Validity of Batch Sorption Data to Describe Selenium Transport through Unsaturated Tuff, Tech. Report LA-12957-MS, Los Alamos National Laboratory, Los Alamos, NM, 8 p.

Conca, J. L. (1996) “Book Review: Estimation Theory in Hydrology and Water Systems,” Environmental and Engineering Geoscience, vol. 2, No. 1.

Kaplan, D., R.J. Serne, A. T. Owen, J. Conca, T. W. Wietsma, and T. L. Gervais (1996) Radionuclide Adsorption Distribution Coefficient Measured in Hanford Sediments for the Low Level Waste Performance Assessment Project. Pacific Northwest National Laboratory Report PNNL-11385, Richland, WA.

Wright, J. V. and J. L. Conca (1996) Development and Commercialization of the Unsaturated Flow Apparatus (UFA) Using Characterization of Aridisols, PNL Technical Report PNNL‑11389, Pacific Northwest Laboratory, Richland, WA.

Chen, X.-B., L. M. Peurrung, J. V. Wright, and J. L. Conca (1996) “In Situ Immobilization of Lead from Aqueous Solutions and Contaminated Soils by Phosphate Rocks”, Proc. of the Nuclear and Hazardous Waste Management Spectrum ’96 Meeting,Am. Nucl. Soc, v.2, p.1286-1293.

Conca, J. L. and J. V. Wright (1995) “Find Transport Data Faster: A New Technology for Determining Transport Properties in Soil and Other Porous Media”, Soil and Groundwater Cleanup, Dec., p. 14-26.

Conca, J. L. and J. V. Wright (1995) “A New Technology for Determining Transport Parameters in All Porous Media”, in Proceedings of the American Nuclear Society Topical Meeting on Mathematics and Computations, Reactor Physics, and Environmental Analyses, Portland, Oregon, American Nuclear Society, La Grange Park, Illinois, vol. 1, p. 165-180.

Khaleel, R., J. F. Relyea, and J. L. Conca (1995) “Estimation of van Genuchten-Mualem Relationships to Estimate Unsaturated Hydraulic Conductivity at Low Water Contents”, Water Resources Research, vol. 31, p. 2659-2668.

Wright, J. V., L. M. Peurrung, T. E. Moody, J. L. Conca, X. Chen, P. P. Didzerekis and E. Wyse (1995) In Situ Immobilization of Heavy metals in Apatite Mineral Formulations, Technical Report to the Strategic Environmental Research and Development Program, Department of Defense, Pacific Northwest Laboratory, Richland, WA, 154 p

Zhou, W., J. Conca, R. Arthur and M. J. Apted (1995) Analysis and Confirmation of Robust Performance for the Flow-Diversion Barrier System within the Yucca Mountain Site, Technical Report IED-9408, INTERA Sciences Inc., Environmental Division, Denver, CO.

Lindenmeier, C. W., R. J. Serne, J. L. Conca, A. T. Owen, and M. I. Wood (1995) Solid Waste Leach Characteristic and Contaminant-Sediment Interactions, Volume 2: Contaminant Transport Under Unsaturated Conditions, Technical Report PNL-10722, PNL, Richland, WA.

Conca, J. L. and S. M. Testa (1994) “Chemical Aspects of Environmentally Processed Asphalt,” in Asphaltene Particles in Fossil Fuel Exploration, Recovery, Refining, and Production Processes, M. Sharma and T. Yen (eds), Plenum Publishing Corp., New York, p. 101-113.

Conca, J. L. and J. V. Wright (1994) “The UFA Technology for Characterization of In Situ Barrier Materials”, in Proceedings of the 33rd Hanford Symposium on Health and the Environment, Department of Energy, Pasco, Washington, vol.2, p. 1179-1193.

Wright, J. V. and J. L. Conca (1994) “Direct Measurements of Transport Properties are Essential for Site Characterization”, in Proceedings of the Spectrum ’94 International Topical Meeting on Nuclear and Waste Management,Am. Nuc. Soc., La Grange Park, Illinois, vol. 1, 438-446.

Conca, J. L. and I. R. Triay (1994) “Selenite Transport in Unsaturated Tuff from Yucca Mountain,” Proceedings of the Fifth International High-Level Radioactive Waste Management Conference, American Nuclear Society, La Grange Park, Illinois, vol. 4, p. 2175-2182.

Wright, J. V., J. L. Conca, and X. Chen (1994) Hydrostratigraphy and Recharge Distributions from Direct Measurements of Hydraulic Conductivity Using the UFA™ Method, PNL Technical Report PNL‑9424, Pacific Northwest Laboratory, Richland, WA, 150 p.

Fredrickson, J. K., F. J. Brockman, B. N. Bjornstad, P. E. Long, S. W. Li, J. P. McKinley, J. L. Conca, T. L. Kieft, and D. L. Balkwill (1994) “Microbiological Characteristics of Pristine and Contaminated Deep Vadose Sediments from an Arid Region”, Geomicrob. J, v. 11, p. 95­-107.

Conca, J. L. (1993) Measurement of Unsaturated Hydraulic Conductivity and Chemical Transport in Yucca Mountain Tuff, Technical Report LA-12596-MS, Los Alamos National Laboratory, Los Alamos, NM, 28 p.

Wright, J. V., J. M. Leather, and J. L. Conca (1993) “The UFA™ Method for Site Characterization and Remediation”, in Proceedings of the Environmental Remediation ’93 Conference, Augusta, GA, vol. 2, p. 819-826.

Conca, J. L. and J. V. Wright (1993) “Centrifuge Technology for Vadose Zone Transport Measurements”, in Vadose Zone Modeling, WHC-MR-0420, Westinghouse Hanford Company, Richland, WA, p. 153-168.

Conca, J. L., M. J. Apted and R. C. Arthur (1993) “Aqueous Diffusion in Repository and Backfill Environments”, Scientific Basis for Nuclear Waste Management XVI, Materials Research Society Symposium Proceedings, vol. 294, p. 395-402.

Conca, J. L., M. J. Apted and R. C. Arthur (1993) “Direct Determination of Transport Properties in Repository Materials”, Scientific Basis for Nuclear Waste Management XVI, Materials Research Society Symposium Proceedings, vol. 294, p. 839-844.

Arthur, R. C., M. J. Apted and J. L. Conca (1993) “Dealing with Uncertainty in the Chemical Environment in Bentonite Backfill”, Scientific Basis for Nuclear Waste Management XVI, Materials Research Society Symposium Proceedings, vol. 294, p. 389-394.

Serne, R. J., J. L. Conca, V. L. LeGore, K. J. Cantrell, C. W. Lindenmeier, J. A. Campbell, J. E. Amonette, and M. I. Wood (1993) Solid Waste Leach Characteristic and Contaminant-Sediment Interactions, Volume 1: Batch Leach and Adsorption, and Sediment Characterization, Technical Report PNL-8889, Pacific Northwest Lab, Richland, WA.

Conca, J. L. and J. V. Wright (1992) “Flow and Diffusion in Unsaturated Gravel, Soil and Whole Rock”, Applied Hydrogeology, vol. 1, p. 5-24.

Conca, J. L. and J. V. Wright (1992) “Direct Determinations of Unsaturated Flow and Transport”, Proceedings of the 12th Annual Hydrology Days Conference, Fort Collins, CO, p. 103-116.

Testa, S. M., J. L. Conca and D. L. Patton (1992) “Fixation of Petroleum Contaminated Soils via Cold-Mixed Asphalt for Use as a Liner”, Trans. of the Hazardous Materials Control Research Inst, p. 30-33.

Testa, S. M., D. L. Patton and J. L. Conca (1992) “The Use of Environmentally Processed Asphalt as a Contaminated Soils Remediation Method”, in Hydrocarbon Contaminated Soils and Groundwater, Kostecki and Calabrese, eds, CRC/Lewis, Chelsea/Boca Raton, pp. 413-426.

Testa, S. M. and J. L. Conca (1992) “When Contaminated Soil Meets the Road”, Soils: Analysis, Monitoring and Remediation, p. 32-38, December.

Conca, J. L. (1992) “Transport in Unsaturated Flow Systems Using Centrifuge Techniques”, in Proceedings of the DOE/Yucca Mountain Site Characterization Project Radionuclide Adsorption Workshop at Los Alamos National Laboratory, September 11-12, 1990, J. A. Canepa (ed.), Los Alamos National Lab Report LA-12325-C, Los Alamos, NM, p. 125-176.

Conca, J. L. and J. V. Wright (1992) “A New Technology for Direct Measurements of Unsaturated Transport”, Proceedings of the Nuclear and Hazardous Waste Management Spectrum ’92 Meeting,American Nuclear Society, vol. 2, p. 1546-1555.

Conca, J. L. (1992) “Near-Field Transport Processes”, SKB Technical Report 91‑59, Swedish Nuclear Fuel and Waste Management Company, Stockholm, p. 90.

Conca, J. L. and Wright, J. V. (1991) “Aqueous Diffusion Coefficients in Unsaturated Materials”, Scientific Basis for Nuclear Waste Management XIV, Materials Research Soc Symp Proc, vol. 212, p. 879-884.

Conca, J. L., Ashida, T. and Sato, H. (1991) “Apparent and Simple Diffusion Coefficients in Compacted Bentonite”, Proceedings of the Second International High-Level Radioactive Waste Management Conference, Am. Nuclear Soc., La Grange Park, IL, vol. 2, p. 1382-1389.

Conca, J. L. (1991) “Transport Parameters in Bentonite and Candidate Repository Host Rocks”, Transactions of the American Nuclear Society, vol. 64, p. 205-206.

Allen, C. C. and Conca, J. L. (1991) “Weathering of Basaltic Rocks under Cold Arid Conditions: Antarctica and Mars”, Proceedings of Lunar and Planetary Science, vol. 21, p. 711-717.

Conca, J. L. and Wright, J. V. (1990) “Diffusion Coefficients in Gravel under Unsaturated Conditions”, Water Resources Research, vol. 26, p. 1055-1066.

Conca, J. L. (1990) “Experimental Determination of Unsaturated Diffusion Coefficients in Paintbrush Tuff Rubble Backfill”, Proceedings of the First International High-Level Radioactive Waste Management Conference, American Nuclear Society, La Grange Park, Illinois, vol. 1, p. 394-401.

Conca, J. L. and Wright, J. V. (1990) “Effect of Meteoric Infiltration on the Aqueous Chemistry of Paintbrush Tuff During Exposure at the Surface”, Radioactive Waste Management and the Nuclear Fuel Cycle, vol. 15(1), 27-41.

Wright, Judith, James L. Conca, John Repetski, and James Clark (1990) “Microgeochemistry of some Lower Ordovician Cordylodans from Jilin, China.” In Willi Ziegler (ed.) 1st International Senckenberg Conference and 5th European Conodont Symposium (ECOS V) Contributions III, Courier Forschungsinstitut Senckenberg, Frankfurt, Germany, vol. 118, p. 307-332.

Conca, J. L. (1989) Ability to Divert Percolating Water around a Waste Package, Battelle Pacific Northwest Laboratories Milestone Report to Westinghouse Hanford Co., Richland, WA, 12 p.

Conca, J. L. (1989) Measurement of Unsaturated Hydraulic Conductivity in Asphalt-Coated Gravel under Normal Gravity, Battelle Pacific Northwest Laboratories Milestone Report to Westinghouse Hanford Company, Richland, WA, 9 p.

Wright, J. V. and J. L. Conca (1989) Experimental determination of unsaturated hydraulic conductivities and diffusion coefficients of gravels and soils beneath the Central Landfill at the Hanford Site, Battelle Pacific Northwest Labs Milestone Report, Richland WA, 28 p.

Conca, J. L. (1989) Diffusion Barrier Properties of Unsaturated Paintbrush Tuff Rubble Backfill, Battelle Pacific Northwest Laboratories Milestone Report to the DOE Performance Assessment Scientific Support Program, Washington, DC, 41 p.

Conca, J. L. (1989) Cold Flow Experiments of Asphalt-Coated Gravel, Battelle Pacific Northwest Laboratories Milestone Report to Westinghouse Hanford Company, Richland, WA, 12 p.

Conca, J. L. and Gee, G. W. (1989) Experimental Determination of Vapor Diffusion Coefficients in Gravel, Battelle Pacific Northwest Laboratories Report to Westinghouse Hanford Co, Richland, WA, 8 p.

Conca, J. L. (1991) “PASS Structural and Physical Perturbation Studies of the Japanese High-Level Waste Disposal Program”, in Proceedings of the Engineering Scale Test and Research Facility for High-Level Waste Disposal, R. C. Arthur, M. J. Apted, C. R. Cole, J. L. Conca and Y. Onishi (editors), Battelle Pacific Northwest Laboratories, Richland, WA.

Conca, J. L. and Wright, J. (1988) “The Aqueous Chemistry of Weathering Solutions in Dolerite from the Allan Hills, Victoria Land”, Antarctic J. of the United States, vol. 22, p. 42 – 44.

Conca, J. L. (1988) “A Novel Application of Centrifugation to the Measurement of Unsaturated Transport Parameters in Geologic Materials”, Pacific Northwest Laboratory Invention Report File #E-848, Battelle Pacific Northwest Laboratories, Richland, WA.

Conca, J. L. and Astor, A. (1987) “Capillary moisture flow and the origin of cavernous weathering in dolerites of Bull Pass, Antarctica”, Geology, vol. 15, p. 151 – 154.

Conca, J. L. and Malin, M. C. (1987) “Solution Etch Pits in Dolerite from the Allan Hills”, Antarctic Journal of the United States, vol. 21, p. 18 – 19.

Conca, J. L. and Cubba, R. (1986) “Abrasion Resistance Hardness Testing of Rock Materials”, International Journal of Rock Mechanics and Mining Sciences, vol. 23, p. 141 – 149.

Conca, J. L. (1985) “Field and Laboratory Studies of Geologic Case Hardening”, Antarctic Journal of the United States, vol. 19, p. 18 – 20.

Conca, J. L. and Rossman, G. R. (1985) “Core Softening in Cavernously Weathered Tonalite”, Journal of Geology, vol. 93, p. 59 – 73.

Conca, J. L. and Rossman, G. (1982) “Case-hardening of Sandstone”, Geology, v.10, p 520-523.

Conca, J. L. and Calvert C. S. (1982) Chemistry and Structure of Diagenetic Chlorite from the Tuscaloosa Trend Sandstones, EPR Research Report, Exxon Production Research Company, P.O. Box 2189, Houston, Texas, 21 p.

Conca, J. L. (1981) “Dark-Ray Craters on Ganymede”, Proceedings of the Lunar and Planetary Science Conference, vol. 12, Part B, p. 1599 – 1606.

Conca, J. L. and Hubbard, N. (1979) “Evidence for Early Volcanism in Mare Smythii”, Proceedings of the Lunar and Planetary Science Conference, vol. 10, Part B, p. 1727 – 1737.

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