MICRO-CHEM LABORATORIES

1 1 MICRO-CHEM LABORATORIES 635 Bret Harte Drive Box 485 Murphys, CA 95247 (209) 728-8200 FAX 209-728-8251 Robert C. O'Neill, President/Senior Petrographer Professional Experience Currently: Mr. O'Neill formed MICRO-CHEM LABORATORIES as a general partnership in 1982. As president and senior petrographer for MICRO-CHEM LABORATORIES , Mr. O'Neill is project manager for investigations and evaluations of construction materials including portland cement concrete, stucco, rock and aggregate materials, masonry, gypsum products, portland cement, fly ash, natural pozzolans, and concrete pipe. Bob supervises the operations of the chemical and petrographic LABORATORIES at MICRO-CHEM LABORATORIES . His primary expertise is in "hands-on" petrography of construction materials utilizing stereo, petrographic, and reflected light microscopes. He has extensive experience in troubleshooting and investigating concrete deterioration including alkali-aggregate reactivity, chemical sulfate attack, physical salt attack, freeze-thaw deterioration, corrosion, surface distress, fire damage, and abrasion.

2 He has served as an expert witness on numerous cases involving the performance and suitability of various construction materials. Previous Experience: Prior to forming MICRO-CHEM LABORATORIES , Mr. O'Neill was an assistant research petrographer in 1975 with the Portland Cement Association, Skokie, IL. In 1979 he started a petrographic laboratory as a geologist-petrographer for Western Technologies, Inc. in Phoenix, AZ. Bob worked for Kaiser Cement Corporation, Permanente, CA in 1981 as a research associate. His work for these organizations was in petrography, microscopy, X-ray diffraction analysis, and other laboratory analysis of construction materials. Education Mr. O'Neill received his in Geography/Geology from the University of Wisconsin in 1971. He has formal course instruction in "Applied Polarized Light Microscopy" and "The Identification of Asbestos" from McCrone Research Institute, Chicago, IL, "Sampling and Evaluating Airborne Asbestos Dust" from University of Arizona, Tucson, AZ, and five courses in concrete and cement technology from Portland Cement Association, Skokie, IL.

3 Professional Affiliations Mr. O'Neill is a member of several professional organizations. He is a Fellow of the American Concrete Institute (ACI) and received the 2003 Delmar L. Bloem Award for distinguished service. He is the former Chair and Voting Member of ACI Committee 201 Durability of Concrete, and a Voting Member of Committee 524 Plastering. Bob is a Past President of the Northern California/Western Nevada ACI Chapter. He is a Member of the American Society for Testing and Materials (ASTM), Committee C-9 on Concrete and Concrete Aggregates, and a Voting Member of Subcommittees Chemical Reactions of Materials, Petrography of Concrete and Concrete Aggregates, and Miscellaneous Tests. Bob is a Member of the Geological Society of America-Engineering Geology Division and formerly Vice President of the Society of Concrete Petrographers. Professional Registrations Mr. O'Neill is a licensed Professional Geologist with the State of Washington and a Certified Professional Geologist with the American Institute of Professional Geologists.

4 Publications Over 5,000 technical reports have been authored by Mr. O'Neill in his career as a concrete petrographer. He has published articles on petrography and chemical analysis of construction materials and has presented numerous papers and lectures at ACI, ASTM, and other organizations. 2 Publications "Petrographer: New Man on the Construction Team," Bennitt, O'Neill, Concrete Construction, Volume 26, No. 7, July 1981. "Comments on Ono's Method and Cement Microscopy," O'Neill, Proceedings of the Fourth International Conference on Cement Microscopy, 1982. "Use of Petrographic Techniques in the Determination of the Fly Ash Content in Hardened Concrete," O'Neill, Kumagai, paper presented at American Concrete Institute Annual Convention, Phoenix, AZ, March 1984. "Panel Discussion on Case Histories on Concrete Petrography," O'Neill, Proceedings of the Seventh International Conference on Cement Microscopy, 1985.

5 "Petrographic Evaluation of Fly Ash Reaction in Concrete and Affects on Maleic Acid Cement Content," O'Neill, Petrography Applied to Concrete and Concrete Aggregates, ASTM STP 1061, Bernard Erlin and David Stark, Eds., American Society for Testing and Materials, 1990. "Evaluation of Hardened Stucco by Petrographic Methods," O'Neill, Proceedings of the Twelfth International Conference on Cement Microscopy, 1990. "Identification and Effects of Sulfate Materials in Hardened Concrete," O'Neill, Proceedings of the Fourteenth International Conference on Cement Microscopy, 1992. "Deterioration of Concrete from Salt Crystallization," H. Haynes, O'Neill, Proceedings of Mehta Symposium on Durability of Concrete, Nice, France, May 1994. "Concrete Deterioration from Physical Attack by Salts," H. Haynes, O'Neill, Mehta, Concrete International, Volume 18, No. 1, January 1996 "Qualifications and Certification of Petrographers," R. C.

6 O'Neill, Stamped in Concrete, Newsletter of the American Concrete Institute, Inc., Northern California Western Nevada Chapter, Inc., March 2001 "SB800: New Construction Defects Law," R. C. O'Neill, Stamped in Concrete, Newsletter of the American Concrete Institute, Inc., Northern California Western Nevada Chapter, Inc., April 2003 "Salt Weathering Distress on Concrete Exposed to Sodium Sulfate Environment," H. Haynes, R. O Neill, M. Neff, and Mehta, ACI Materials Journal, Volume 105, No. 1, January-February 2008