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Meet the engineers and lawyers who lead the ACEC Business Insurance Trust.


Robert A. Overfield

P.E. Chair

Michael D. Klingner

P.E. Vice Chair

Paul Boyce

P.E., PG, Treasurer

Rachel Hayden

P.E., Trustee

Armando Ramos

PE, LEED AP Trustee
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Ted Williams

PE, FACEC, ExecEng, Trustee
Roger Guilian

Roger Guilian


Marc Alper

Trustee Emeritus

Mary Erchul

Executive Director

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Robert A. Overfield
Past Chairman of the Board for a 37-employee civil and survey firm in Cody, Wyoming. Twenty licensed engineers and three licensed surveyors work with supporting staff to meet the needs of a mostly public client base from six offices located across the state.

Past 40 years spent with Engineering Associates, with increasing responsibilities. Rob also served as COO and CEO of this firm before becoming President of the Board of Directors in 2014. He stepped down from that position in 2021.

Primary civil design work involves municipal streets and infrastructure extensions and replacements for local towns in the area, including treated waterlines, sanitary sewer lines, storm drain lines, water storage and treatment, and sewer treatment. Other work includes rural treated water systems, agricultural irrigation improvements, county road upgrades, and rural and urban subdivision and site development.

Rob joined the ACEC BIT Board in June of 2014, and currently serves as the Board Chair. He is a past president of ACEC/WYO and the ACEC Small Firms Coalition. He is a long-time member and continues to be involved with the Small Firms Coalition Steering Committee.

Michael D. Klingner
President and CEO of Klingner & Associates, P.C. since 2000. He has been with the firm since 1977.

Chairman, Upper Mississippi, Illinois & Missouri Rivers Association (UMIMRA), a Non Governmental Organization representing flood control issues for the Upper Mississippi River Valley: Illinois, Missouri, Iowa, Wisconsin & Minnesota. Chairman of the MVFCA Engineering Committee for 2018.

Mr. Klingner has almost forty years of experience in the engineering and construction fields, and has presented flood control issues at numerous Congressional and Senate hearings in Washington, D.C. Mr. Klingner was instrumental in the development of the comprehensive plan to address Flood Control Improvements, including flood management and mitigation for the Upper Mississippi and Illinois rivers, as recommended by the Mississippi River Commission in 2008.

He has extensive experience in civil engineering and construction, and a broad range of experience in various engineering fields, such as drainage and flood control, environmental, recreation, water and wastewater, site planning, Geographic Information Systems, and renewable energy. He is licensed in four states, and has been Project Manager for numerous multi-million dollar projects involving multi-participant, intergovernmental agreements including non-profit organizations.

He has significant experience in water resources projects, renewable energy, and environmental and construction permits with the Corps of Engineers and state agencies in Illinois, Missouri and Iowa. Project work includes flood control and port authorities along the upper Mississippi and Illinois Rivers.

He provided expert testimony in the court case of State of Missouri VS Scott (1994) and State of Missouri vs Scott (retrial) (1998) – Mr. Klingner testified and was the key expert witness for the State of Missouri at this trial as to the condition of the levee that Scott was charged with criminally breaching, contributing to the damage of the 1993 flood in Missouri.

Paul Boyce
President and CEO of P.W. Grosser Consulting, Inc. Paul Boyce, PE, PG, has been associated with Bohemia, NY-based P.W. Grosser Consulting, Inc. (PWGC), an environmental engineering and consulting firm with more than 60 employees, for the past 26 years.

Mr. Boyce, who is a third-generation engineer, earned a BS in Civil Engineering from SUNY Buffalo and an MS in Environmental Engineering from Polytechnic University. He is a licensed professional engineer in the states of New York – where he is also a professional geologist – and Pennsylvania.

Over the span of his career Mr. Boyce has dedicated himself to the engineering profession by volunteering his time and energy to strengthen and grow PWGC and advancing the industry. In 2018 Mr. Boyce was named “Engineer of the Year” by the New York State Society of Professional Engineers Long Island Chapter for his contributions to the engineering profession.

His ACEC experience includes having served as treasurer, secretary, vice chair and chair of ACEC-NY’s Long Island Region. He currently serves as regional board member. At the state level, Mr. Boyce has served on ACEC-NY’s Board of Directors, as chair of the membership committee. Currently, he is on the membership and standards of practice committees.

Mr. Boyce is affiliated with the American Society of Civil Engineers, American Water Works Association, Long Island Professional Geologists Association, National Groundwater Association and New York State Society of Professional Engineers.

Outside of the office Mr. Boyce is an avid surfer who travels the world in search of the perfect wave.

Rachel Hayden
Rachel Hayden is a Vice President and Regional Growth Leader at GEI. Her prior firm, Hayden Consultants, Inc., was acquired by GEI in September 2018. Rachel launched Hayden Consultants as a sole proprietor in March of 2000, working out of her dining room during the startup phase. Her goal was to provide a great place for people to work toward a common mission: to make a difference in our quality of life by designing public infrastructure with the future in mind. The company grew steadily over 18 years to a staff of over 40 employees, with a focus on transportation, water resources, transit and construction services.

Hayden Consultants was a five-time Aggie 100 honoree, which recognizes the 100 fastest growing Texas A&M Aggie-owned companies in the world, and for two years Hayden was on the Dallas 100 list of the fastest growing privately held companies in Dallas. In 2018 Hayden Consultants was ranked #29 on the list of largest North Texas engineering firms. In 2015 Rachel was awarded the national Civil Engineering Entrepreneur of the Year from the American Society of Civil Engineers.

Rachel has served in leadership positions for numerous professional organizations, including Chair of ACEC Texas, President of ASCE Dallas Branch and President of ACEC Dallas Chapter. She currently serves on the Texas A&M University Civil Engineering Advisory Council and as a Trustee on the ACEC Business Insurance Trust. Rachel is passionate about leading the next generation of engineers to embrace creative problem solving through in-house design challenges and competitions.

Armando Ramos
Armando Ramos is CEO/President of Ramos CS, a multi-service infrastructure consulting firm specializing in engineering, program and construction management.

Prior to starting a company, he worked at a large Corporation holding various management positions; including being part of the Leadership Council to the CEO which afforded him a global perspective on how large engineering and construction companies are managed worldwide.

Mr. Ramos has over 27 years of experience working on large-scale transit and transportation systems, international airport expansions, federal and municipal facilities. He has helped modernize engineering and management workflow processes through the use of technology and has written various white papers. Mr. Ramos started his career as a Structural Engineer, where he was responsible for the design of several federal facilities and structures, including the Metro Gold Line underground tunnels in the Los Angeles area.

Mr. Ramos has been recognized by Engineering-News-Record (“ENR”) and Ramos CS is proud to have received “Member Firm of the Year” by the American Council of Engineering Companies, Los Angeles. Mr. Ramos is a licensed Professional Engineer in California, has a Bachelors and Masters engineering degrees from the University of California at Berkeley, along with a Professional MBA degree from Pepperdine University.

Mr. Ramos joined the ACEC BIT in June 2018, is currently ACEC CA State Director, with prior leadership roles as: ACEC-Los Angeles – President (2018-2019), Vice President (2017-2018), Treasurer (2016-2017), Secretary (2015-2016), Board of Director (2014-Present) and Chair Small Business Committee (2014-2017).

Ted Williams
Ted Williams is President of Landmark Engineering, Inc., d/b/a Landmark Science & Engineering, a multidisciplinary consulting firm. He has been with the firm since 1988. The firm specializes in site/civil engineering, land surveying, and natural environmental sciences, with a focus on sustainable stormwater practices.

Mr. Williams has 44 years of comprehensive civil engineering, site design, and project management experience. His primary focus has been planning, design, traffic studies, and road design for large mixed-use redevelopments, educational, recreational/athletic, commercial, office, and residential developments. His expertise in land use, zoning, traffic, and transportation has led to the successful completion of numerous large-scale projects.

In 2020, Mr. Williams was named Delaware Engineer of the Year by the NSPE/Delaware Engineering Society. He is Chairman of the Delaware Council on Transportation advisory panel and is immediate Past-President of Committee of 100, a business advocacy group. He was Delaware’s Chairman of the Transportation Trust Fund Task Force, a member of the Department of Education Construction Committee, and Vice Chairman, Director, and public member of the Interscholastic Athletic Association.

In addition to serving as ACEC National Executive Committee Chair in 2012-2013, Mr. Williams was elected to the College of Fellows in 2011, inducted to the Order of the Engineer in 2015, and has qualified as an Executive Engineer. He has served ACEC Delaware as president, national director, transportation committee chair, and currently as New Castle County partnering chair. Mr. Williams’ Wilmington Flats project was selected for inclusion in a 2015 Engineering, Inc. article “Remaking a Century-Old Housing Development” for its innovations in urban renewal.

Williams is a registered professional engineer in the states of Delaware and Pennsylvania and earned a Bachelor of Science in Civil Engineering (Transportation) from Drexel University in Philadelphia. He advocates for STEM-based education and has been a dedicated advocate for efficiency in public school construction projects and instrumental in developing a model for future school development based on innovative, full-school campus design.

Roger Guilian
Roger Guilian is General Counsel and Vice President of Volkert, Inc. Roger joined Volkert in August 2004 after a rewarding and successful six-year career in private practice. During that time, Roger gained extensive jury trial experience, trying dozens of insurance defense cases and litigating hundreds of suits to favorable resolutions. In his current capacity as Volkert’s General Counsel, Roger is responsible for the delivery of select legal services, including the conduct and resolution of all professional liability litigation, the oversight and management of external counsel, the legal review of significant transactions, and continued emphasis and cultivation of risk avoidance and management practices for Volkert’s operations.

Roger is a 1995 magna cum laude graduate of The University of Alabama and a 1998 graduate of The University of Alabama School of Law. His professional affiliations include the American Council of Engineering Companies (ACEC) National Risk Management Committee and the ACEC Legal Counsels’ Forum, the American Bar Association’s Construction Law Forum, ACEC-Alabama, and the Alabama State Bar, for which he served as the 2018 Chair of the Construction Law Section.

Roger is active in The University of Alabama National Alumni Association and served as the 2002-2003 President of the Mobile Alumni Chapter.

Roger and his wife Leslie are the proud parents of a son, two daughters, and a Boykin Spaniel. The Guilians are members of St. James Episcopal Church in Fairhope, Alabama where Roger serves on the Vestry and as Junior Warden in addition to a number of lay ministries.

Volkert, Inc. is an employee-owned infrastructure engineering firm serving state and federal agencies, local and municipal governments, private industry, and select international clients. Founded in 1925, Volkert has grown from a regional engineering firm to include a national and global client base. The company ranks among the top 100 engineering firms in the United States – #95 overall in the “2019 Top 500 Design Firms” published by Engineering News-Record.

Headquartered in Mobile, Alabama, Volkert is active in more than 20 states and the District of Columbia, with experience and/or professional registrations throughout the United States.

Marc Alper
Marc Alper, joined Alper Audi, Inc., a structural engineering firm experienced in providing consulting for architects, contractors, developers, owners, industry and government, as a Project Engineer in 1970. Today he serves as President of the firm, which was started by his father in 1951. He has served as Chairman and National Director of ACEC of Missouri. In 2010, he was elected a Fellow of ACEC. Alper earned a Bachelor of Science in Civil Engineering from Purdue University and a Master of Science in Structural Engineering from the University of Missouri-Rolla.

Marc is most proud of is his family and says: I have been married for 43 years (in fact our 43rd anniversary is on 6/28, which will occur while we are in NYC), and we have three grown children. My oldest two children are married and each of them have two children, which makes me the proud grandparent of four wonderful children. My youngest son recently graduated college and is starting his career – but is currently back living at home. In my professional life I head a 20 person structural engineering firm designing a wide variety of buildings. It is a very active practice, responsible for design of many projects across the US with many hundreds of million dollars of construction value. I am very proud of the firm that we’ve grown, its staff, its projects, and the high standard of living we are able to provide for all of our employees.

In a parallel life, I am very active on many civic and charitable organizations in addition to ACEC. I have been through all of the leadership offices for ACEC Missouri and continue to be active there, plus I am very involved with the ACEC Business Insurance Trust. I thoroughly enjoy my involvement in the BIT and the friendships I’ve developed with the other trustees, Greyling, and The Hartford participants. I am exceedingly impressed with everyone’s intelligence, insight and commitment, and I am thrilled to serve with them on this board.

Mary Erchul
Mary recently retired from engineering after 30 years and now is providing association and event management services. She was a member of ACEC for over 20 years including a role as President of ACEC California and Vice Chair of ACEC National. She has a true passion for our association and will be a valuable asset for our Trust.

Ms. Erchul has been volunteering for large associations and non-profits for over 20 years. She recently started her own company to focus on association and event management services. Her strength lies in her ability to develop programs that appeal to association members and messaging that resonate with current events.

She is currently working with associations and non-profits to assist in their development as an Executive Director including the American Council of Engineering Companies (ACEC) Los Angeles County Chapter and the ACEC Business Insurance Trust (BIT).

She is a graduate of UC Santa Cruz with a BA in Economics with an emphasis in business and a graduate of UC Berkeley with a BS in Civil Engineering.

Mary will be responsible for the day to day operations of the trust as well as helping our members and Trustees to achieve our goal of ACEC’s Trust Programs that are designed to enhance your membership investment by helping to control your firm’s costs.