Terry Willems SENIOR PRINCIPAL MATERIALS SCIENTIST Mr. Terry Willems has over forty years of practical experience in the field of construction materials. Willems received a Bachelor of Science degree in 1977. He has significant experience in materials testing and investigation holding positions at geotechnical firms and materials laboratories which include: Laboratory Manager; Consultant, Concrete Petrographer; and, Principal Materials Scientist. Mr. Willems is a 35 year member of the American Concrete Institute, voting member of ACI Committee 201 dealing with Durability of Concrete as well as past secretary of ACI 515 Protective Systems for Concrete and past secretary of ACI 524 Plaster. Presently, he is a Senior Principal Materials Scientist with CTLGroup. As an expert witness he has testified in the field of construction materials in over forty-eight cases in multiple states and has never been disqualified to testify as an expert.

Academic Credentials Representative Project Experience B.S. in Water Resource Concrete Deterioration Management and Soils • DOE Rocky Flats Buildings 776/777 and 707, Golden, CO: Nuclear weapon processing University of Wisconsin - Stevens buildings; assessment and durability evaluation of concrete slabs. Point, 1977 • NASA Michoud Assembly Building, New Orleans, LA: 33-Acre roof; condition assessment of spalling channel slab roof panels. • Goldstone Antenna, Goldstone, CA: Evaluation of deep space antenna pedestal Awards exhibiting cracking and ASR distress. ACI Wason Medal for Materials • Madrid Antenna, Rubledo de Chavela, Spain: Evaluation of deep space antenna Research, 2001; high strength pedestal exhibiting cracking and ASR distress. concrete testing techniques – state of the art paper. Materials Investigation • Wrigley Building, Chicago, IL: Terra cotta facade; laboratory testing of terra cotta to establish existing properties. Contact Information • Soldier Field, Chicago, IL: Assessment of anti-reflective glass damage for luxury skyboxes. 5400 Old Orchard Road • Wacker Drive Balusters, Chicago, IL: Evaluation of cracking limestone balusters to Skokie, Illinois 60077 evaluate cause and predict future durability. (847) 972-3234 • Aviano Air Force Base, Aviano, Italy: Failure analysis of stucco applied to residence [email protected] units; condition survey, sampling, and laboratory testing. • Milwaukee City Hall, Milwaukee, WI: Terra cotta facade; evaluation of terra cotta and litigation support. • Utah State Capitol, Salt Lake City, UT: Evaluation of cracking of custom hexagonal ceramic tile; condition survey, sampling, laboratory testing, and litigation support. • Cardon Childrens Hospitals, Mesa, AZ: Failure analysis of cracking polyacrylate terrazzo and litigation support.

Historic Preservation • Meridian Hill Park, Washington, DC: Condition assessment and repair recommendations of John Earley exposed aggregate concrete. • Chicago Pumping Station Roof, Chicago, IL: Assessment of cinder concrete cast on wrought iron corrugated deck including replacement mix recommendations. • Cabrillo Bridge, San Diego, CA: Condition assessment of historic concrete bridge structure. • Harvard Club of New York, New York, NY: Laboratory testing of artificial stone from 1905 to establish existing properties. • Pearl Harbor Naval Shipyard, Hawaii: Consulting regarding coating failures in historic building.

www.CTLGroup.com Litigation and Deposition History

Terry Willems Sussex Insurance Co. vs. Anthony Fiore Construction, et al. June 6-7, 2018. Mediation in Port Charlotte, Florida. Failed epoxy floor.

FOC – Liberty vs Custom April 26, 2018; deposition at CTLGroup. Testify on porcelain tile failures.

Bayside Park & Marine Center vs CMG Engineering. February 1, 2018 - Testify at trial in Kalispell, Montana. Non-air entrained concrete placed in exterior retaining wall.

Al and John vs Seamless flooring. September 12, 2017 - Al and Johns in NJ. Deposition - Polyurethane and Sika Quick 1000 topping cracking/debonding in meat processing facility.

August 18, 2016 – Sovereign Terrace in Atlanta. Deposition - exterior porcelain tile debonding and cracking on balconies.

Ohio Fairfield Union vs Tarkett, Columbus, OH. Deposition June 2, 2016 - Luxury vinyl tile. Eastern Columbia Building, Los Angeles. Deposition February 10, 2016 – Terracotta.

FFC Mediation, Chicago. December 10, 2015 - Sports floor debonding. Huntsville Jail, Alabama. Deposition October 22, 2015 - Concrete cracking. Kalahari, Indiana Deposition August 7, 2015 - Gypsum concrete.

Big League Dreams. Arizona Mediation June 2 through 4, 2015 - Concrete pavement cracking. Fashion Outlet Center, Illinois Mediation June 22, 2015 - Porcelain tile debonding.

Casa Clara Condominium vs RL James, Miami, FL. Deposition April, 2014 - Petrographic examination/water cement ratio of concrete.

Bayside Park & Marine Center vs Wolstein Custom Builders, Bigfork, MT. Deposition August, 2013 - Petrographic examination/air content of concrete.

Milwaukee City Hall, Milwaukee, WI. Mediation April, 2013 - Terra cotta cracking and spalling. Banner Desert Hospital, Mesa, AZ. Mediation February, 2013 - Terrazzo and concrete cracking.

Milwaukee City Hall, Milwaukee, WI. Mediation January, 2013 - Terra cotta cracking and Spalling.

Banner Desert Hospital, Mesa, AZ. Mediation May, 2012 - Terrazzo and concrete cracking. Modesto Irrigation District Filter Basins, Modesto, CA. Mediation February, 2012 -Filter basin concrete cracking.

Jackson Country vs BNIM Architects, Kansas City, MO. Mediation July, 2011 – Parapet concrete cracking.

Cinemark Theaters, Mansfield, TX. Deposition 2011 - Cast stone debonding.

Supreme Court Long Island NYC - Arches Mall. Trial testimony April, 2011 - Applied finishes delamination.

Teledyne Brown, Tanner, AL. Deposition August, 2010 - Scaling of air entrained interior concrete floor slab.

Table Rock vs S& B Construction, Medford, OR. Mediation August, 2010 – poor quality concrete and finishing issues.

University of Illinois Chicago. Mediation September 2010 - Concrete materials issues. Schaumburg Development. Mediation April, 2010 - Concrete scaling issues.

www.CTLGroup.com Baruch College, New York City. Deposition January, 2010 - Debonding of epoxy terrazzo.

Terry Willems Vasquez v. Metra, Chicago, IL. Deposition August, 2009 - Failure of concrete channel slab in Chicago.

Nevada Regional Medical Center vs. Universal Construction Company, Nevada, MO. Arbitration April, 2009 - Failed sheet vinyl floor and patching material.

CC-Aventura v. The Weitz Company, Aventura, FL. Deposition January, 2009 - Failed stucco and patching material.

Nevada Regional Medical Center vs. Universal Construction Company, Nevada, MO. Deposition December, 2008 - Failed sheet vinyl floor and patching material.

Jacobs Construction Services v. Sherry K Corporation, Metropolitan Terrazzo, Washington International Insurance, and Gulf Insurance Company, Chicago, IL. Arbitration January, 2008 - Failed epoxy terrazzo.

Jacobs Construction Services v. Sherry K Corporation, Metropolitan Terrazzo, Washington International Insurance, and Gulf Insurance Company, Chicago, IL. Deposition December 5, 2007 - Failed epoxy terrazzo.

Itron v. Web Construction, Waseca, MN. Arbitration May 21, 2007 - Concrete floor distress, expansive shale popouts.

Intervet v. The Invironmentalist, DeSoto, KS. Arbitration March 26-28, 2007 - Failed sheet vinyl.

Intervet v. The Invironmentalist, DeSoto, KS. Deposition March 6, 2007 - Failed sheet vinyl. Century Theaters, Deer Park, IL. Deposition September 26, 2006 - Peeling paint from precast wall.

Georgia vs. Ellis-Don Construction, Gwinnett County, Lawrenceville, GA. Mediation December 14, 15, 2005 - Failed VCT and epoxy terrazzo floors.

Dragomir Kresovic vs. Flooring Brokers, Milwaukee, WI. Deposition March 18, 2005 - Sheet vinyl flooring distress.

Ford Audio vs. E.V.Cox, Oklahoma City, OK. Arbitration February 8, 2005 - Stained concrete floor.

Ford Audio vs. E.V.Cox, Oklahoma City, OK. Deposition January 27, 2005 - Stained concrete floor.

Northview Public Schools vs. Kingscott Associates, Grand Rapids, MI. Deposition March 31, 2004 - Polyacrylate terrazzo floor.

American Cancer Society vs. Tapp Development, Oklahoma City, OK. Deposition September 22, 2003 - Access floor issues.

Brockmiller Construction v. Venetian Terrazzo, Cape Girardeau, MO. Jury Trial Testimony January 15, 2003 - Epoxy terrazzo blistering.

Brockmiller Construction v. Venetian Terrazzo, Cape Girardeau, MO. Deposition August 21, 2002 Deposition - Epoxy terrazzo blistering.

Wilson, Jackie vs. PBM Concrete, Inc., et. al., Chicago, IL. Deposition October 16, 2001 - Precast concrete spalling.

EMC Corporation v. Freudenberg Building, Boston, MA. Deposition December 18, 1998 - Rubber floor debonding.

www.CTLGroup.com Petrifond vs. QIT Arbitration, Montreal, Canada. Fact Witness February 13, 1998 -Low strength concrete piles. Terry Willems

Publications Gebler, S.H., Powers, L., Willems, T., and Detwiler, R., “Petrographic Examination Used to Analyze a Distressed Sewer Line Coating,” Journal of Protective Coatings and Linings, Vol. 19, No. 5, May 2002, pp. 49-52.

Farahmandpour, K., Jennings, V.A., Willems, T.J., and Davis, A.G., “Evaluation Techniques for Concrete Building Envelope Components, “Roofing Magazine Interface, Vol. XX, No. 3, March 2002, pp. 3 - 15.

Farahmandpour, Willems, T.J., and Davis, A.G., “Evaluation of Liquid-Applied Waterproofing Systems: Case Histories,” Roofing Magazine Interface, October 2001, pp. 21 - 31.

Kanare, H.M., “Understanding Concrete Floors and Moisture Issues,” CD-ROM, Portland Cement Association, CD014, 2000. Peer reviewer.

Burg, R.G., Caldarone, M.A., Detwiler, G., Jansen, D.C., and Willems, T.J., “Compressive Testing of HSC: Latest Technology,” Concrete International, Vol. 21, No. 8, August 1999, pp. 67-76.

Pistilli, M. and Willems, T. 1993. “Evaluation of Cylinder Size and Capping Methodin Compression Strength Testing of Concrete.” Cement, Concrete, and Aggregates, CCAGDP, Vol. 15, No. 1: 59-69.

Presentations

Michols, K.A., Willems, T.J., and Rebel, W.A., “Lessons Learned from Coating Failures,” presented at the American Concrete Institute 1997 Fall Convention, Atlanta, Georgia, November 1997.

PCA talk on moistures failures of floor coverings 1997.

American Concrete Institute Committee 308 Seminar in October 1998, “Effects of Concrete Curing Compounds on Adhesive Bond to Resilient Floor Coverings,” H. Kanare and T. Willems.

Inter-Industry Conference Workshop April 17, 18, 2003 – moisture testing of concrete.

Decorative Concrete Replication and Repair: March 15, 2004 Meridian Hill Park: Repair of historic structures.” Presented at ACI convention in Washington, DC.

Lee, S.Y., Daugherty, A., Willems, T. 2013. “Application of Petrographic Analysis for Corrosion Assessment.” Presented at 2013 Fall ACI Convention: Sponsoring Committee 222 - Corrosion of Metals in Concrete-Laboratory Test Methods for Corrosion Assessment: Technical Review and Practical Implications.

Lee, S.Y., Willems, T. 2013. “Case Study on Concrete Pavers Exhibiting Physical Salt Attack.” Presented at 2013 Fall ACI Convention: Sponsoring Committee 123 - Research and Current Developments.

“Thaumasite Sulfate Attack of Precast Concrete Retaining Wall Units,” Terry J. Willems and Victoria A. Jennings, CTLGroup, Skokie, Illinois Spring 2014 session on thaumasite sulfate attack.

www.CTLGroup.com Multiple presentations (4) at the National Terrazzo and Mosaic Association Meetings: Atlanta, Chicago – three separate occasions. Terry Willems Wisconsin Asbestos Conference 12 8 2017 – chemical adhesive removers for mastic.

Prior Laboratory Experience STS Consultants materials laboratory manager; responsible for testing materials following standard procedures, and quality control. • Roofing; test roof cuts and cores to determine compliance with specifications for number of plies, lap, skips, weights per layers, etc. • Membrane testing: perform tensile and elongation testing • Bituminous concrete (asphalt pavement) testing including extraction for asphalt binder content, sieve analysis, compressive strength, flow, unit weight, etc. • Aid in developing testing procedures for geofabrics (christopher clamps), flow rates, etc. • 7 strand cable testing for tensile strength and elongation • Natural stone testing, flexural, absorption, density, compressive strength. • Aggregates; all types of testing of sand and gravel • Light weight aggregates research (paper aggregate, expanded shale, expanded clay, expanded shale, fly ash aggregate, and sludge aggregate. • Develop testing procedure for compressive strength of filter cake from power plant scrubbers. • Bond shear, direct shear, split tensile, modulus of elasticity of concrete and topping mixes. • Research scaling of concrete made with various percentages of ground granulated blast furnace slag (GGBS) • Testing of expansive bentonite water stop. • Concrete mix designs, fresh property testing. • Daily testing of concrete cylinders (average over 100 per day) • Chloride ion testing of hardened concrete. • Other materials tested include brick, block, wood, terra cotta, metal weld bend testing, mockups to aid in determining failures (metal railing and epoxy, glass block water leakage

Continued Education

1991 McCrone Applied Polarized Light Microscopy; techniques on using the microscope (1 week class)

1990 Gateway Technical College – Composite Materials; study of composite materials including epoxy resin and fiberglass composites and injection molding. 4 semesters 20 credits.

Preserve and Play Workshop 2006 Chicago (historic restoration)

STS 1990-1995 Petrography mentoring working on various projects, including air content determination. Also continued to perform petrographic examination at CTLGroup. Worked with some of the top petrographers in the country ( Stark, Campbell, and Kress).

Worked with some of the top cement chemists in the country such as Kanare, Miller, Johansen, and Broton.

www.CTLGroup.com Mentoring with one of the top Structural Engineers - Gene Corley on many projects including the Murrah Federal Building bombing in Oklahoma City. Terry Willems Other education includes committee work, reading industry trade magazines/articles, attending conventions, webinars, independent research, etc.

Professional Affiliations Current American Concrete Institute (ACI) - Member since 1984 Committee 524 Plastering (past secretary) task groups. Committee 515 Protective Systems for Concrete (past secretary) – deals with all types of protective systems, coatings, membranes, sealer, including epoxy systems. Committee 303 Architectural Cast-in-Place Concrete Committee 201 Durability of Concrete, task groups. Committee 302 Construction of Concrete Floors

The Society for Protective Coatings (SSPC) used to be the steel structures painting council

Cast Stone Institute (CSI)

National Tile Contractors Association

Past ASTM International Committee C12 on masonry mortars

NACE – National Association of Corrosion Engineers Surface prep committee prior to coating

ICRI – International Concrete Repair Institute Concrete surface prep committee prior to coating

www.CTLGroup.com