Topic: Transportation in Maryland Panel
Bio:
Holly Arnold has an extensive background in managing and implementing transportation projects, with both public and private sector experience in the transit industry. In June 2021, she was appointed Administrator of the Maryland Department of Transportation Maryland Transit Administration (MDOT MTA). In this role, Ms. Arnold oversees the 13th largest transit system in America, managing six modes – Local Bus, Metro SubwayLink, Light RailLink, Mobility paratransit services, Commuter Bus, and MARC Train Service – with an annual operating budget of $900 million and a 6-year capital budget of over $3 billion. Ms. Arnold also oversees the construction of the Purple Line, a new, 16-mile light rail line outside of Washington, D.C., currently the largest transit public-private partnership (P3) in the nation.
Ms. Arnold has been with MDOT MTA since 2012, working as the Capital Program Manager, Director of Planning and Programming, and Deputy Administrator/Chief Planning, Programming, and Engineering Officer. She oversaw all aspects of the agency's $3 billion six-year capital program, from project planning to construction. In her time at MDOT MTA, Ms. Arnold has led the development of the Central Maryland Regional Transit Plan and Cornerstone Plans for each mode, successfully applied for over $80 million in federal grants, spearheaded the agency's asset management program, and oversaw the creation of the agency's Transit Oriented Development design guidelines and station area concepts.
Ms. Arnold is a 2017 graduate of the Leadership APTA program, was recognized in 2018 as a Top 40 Under 40 transit professional in Mass Transit Magazine and was a 2019 40 Under 40 honoree in the Baltimore Business Journal. Ms. Arnold holds an undergraduate degree from Duquesne University and a Master's in Public Administration from the University of Pittsburgh's Graduate School of Public and International Affairs.
Topic: ZEHES, CHS, BEPS, and more: The Alphabet Soup of Maryland Building Decarbonization Policies for Engineers
Bio: Dr. Zachary Berzolla is the Building Decarbonization Division Chief for the Maryland Department of the Environment. His work focuses on policies and programs to help all Maryland buildings achieve net zero by 2045. He holds a doctorate in Building Technology from MIT where he worked with Professor Christoph Reinhart. At MIT, he studied building retrofit adoption and co-developed UBEM.io, a freely available web tool to help communities identify technology pathways to their emissions reduction goals. Supported by the National Science Foundation Graduate Research Fellowship, Zach collaborated with policymakers from 25 cities on five continents to chart their building decarbonization plans. Prior to MIT, he worked in the commercial buildings group at NREL. Zach holds dual bachelors degrees in Engineering and Physics from Dartmouth and Middlebury College, respectively.
Topic: Updating the Storm Drain Structural Standard for MDOT and SHA
Bio: Aimee Connerton serves as a Technical Resource Specialist at Rinker Materials. She collaborates with consultants, agencies, and engineers to deliver resilient and sustainable infrastructure solutions. Aimee also serves as the Education Chair for the American Concrete Pipe Association, where she coordinates training and ACPA Pipe School, their premier training event. She has worked in the construction and infrastructure industry for more than 25 years. Aimee collaborates with various agencies and organizations to offer expertise and training in precast concrete design and installation. Aimee is a graduate of the University of Maryland and lives in southern Maryland.
Topic: Framework for Repositioning Existing Buildings to Achieve Sustainability Benefits
Bio:
Topic: Responsible AI and Engineering
Bio: Shannetta R. Griffin, P.E., was appointed as the Executive Director and CEO of the Maryland
Aviation Administration on April 4, 2025. She is responsible for overseeing the management,
planning, and operations of Baltimore/Washington International Thurgood Marshall Airport,
Martin State Airport, and the state’s regional aviation assistance program. Shannetta has more
than 40 years of experience as a professional engineer within the transportation industry with
an emphasis on aviation and aerospace.
Prior to joining the Maryland Aviation Administration, Shannetta served as Associate
Administrator of Airports for the Federal Aviation Administration (FAA) from 2021 to 2025. In that capacity, she led a team of more than 700 employees nationwide and administered national
airport safety and standards, planning, engineering, federal compliance and financial assistance programs to provide complex solutions for more than 3,300 public-use airports across the country.
Before joining the FAA, Shannetta served in executive leadership roles for the Indianapolis
Airport Authority (IAA) and the Columbus Regional Airport Authority (CRAA). At IAA she was
responsible for the management, engineering, planning, construction, environmental and
supplier diversity program for multimillion capital and operating budgets for the Indianapolis International Airport and five reliever airports.
As the Chief Commercial Officer at CRAA, Shannetta maximized revenue in real estate and land development, air service and cargo development, concession management and parking/ground
transportation, increasing concession revenue growth and achieving record breaking passenger
growth. Subsequently as the Chief Development Officer, she led the planning and execution of
the Authority’s largest capital development program, a $2 billion project consisting of a new
passenger terminal, consolidated rental car facility and hotel.
Shannetta has received numerous awards and professional accolades by transportation and civic
organizations including the Woman in Aviation Excellence – Legacy Award by the Airport Minority Advisory Council, Women Who Move the Nation Award by the Conference of Minority
Transportation Officials, Distinguished Alumni Award by the University of Toledo College of Civil Engineering, Corporate Professional of the Year Award by the National Forum for Black Public Administrators, Achievement in Business and Industry Award by the Indianapolis Center for Leadership Development and Strathmore Who’s Who.
Ms. Griffin received a Bachelor of Science in Civil Engineering from the University of Toledo.
She is the proud mother of two children and a member of Alpha Kappa Alpha Sorority, Incorporated.
Topic: Your Ethics Toolbox: Building a Framework for Ethical Decision -Making With Case Studies
Bio: Ms. Leach is a registered engineer, specializing in the design of HVAC systems for healthcare facilities. Her current engineering focus includes the design of hybrid heating & cooling plants that incorporate simultaneous heating and cooling equipment like heat recovery chillers and air source heat pumps. It’s challenging work that maximizes our resources and strengthens our commitment to fossil fuel reduction.
In her spare time, Jennifer is an active volunteer for ASHRAE. At the Chapter level Jennifer has served in many committee chair positions and spent seven years on the board, including Baltimore Chapter President in 07-08. At the Society level Ms. Leach is currently serving on the Nominating Committee, TC1.7 Business Management and Legal Education and TC6.1 Hydronics and Steam.
Jen’s passion is the recruitment and retention of women in the building industry. She worked locally to establish the Women in ASHRAE affinity group and followed up by spearheading the initiative for the global Society. Jennifer takes every opportunity to empower women through mentoring and inspire girls to “be what they see” as a confident role model.
Topic: Port Administration - Decarbonization of World Trade Center
Bio:
Sam is a licensed professional engineer working in the building systems engineering industry, where he focuses on the design, construction, and commissioning of HVAC systems for airports, schools, offices, maintenance facilities, and many other commercial buildings. He is a mechanical engineer and project manager at JMT, a large, multi-disciplined consulting engineering firm headquartered in Hunt Valley, MD. His work includes field inspections and surveys, 2D & 3D modeling, building thermal load and energy calculations, mechanical systems design, specifying equipment and materials, control systems design, and systems commissioning. Sam is an active member of ASHRAE, (an HVAC-focused engineering society with over 50,000 members worldwide) and served as the Baltimore Chapter president for the 2021-22 year. Sam graduated Lafayette College in 2012 with a B.S. in Mechanical Engineering.
Topic: Advancing Stormwater Resiliency in Maryland (A-StoRM) Panel Discussion
Bio:
Mr. Tarr is currently the Chief Engineer and Program Manager for the Urban Development and Conservation Program at the Prince George's Soil Conservation District; a position he’s served in for the last decade plus.
In this role, he leads and provides both technical and management oversight on reviews/approvals of all grading, erosion, and sediment control, and dam safety for proposed developments in the County’s urban landscape. These include residential, commercial, industrial, institutional, and other land use activities such as municipal fill sites, mining and reclamation operations, and timber harvesting projects. He, and his team, actively collaborate with other agencies and stakeholders towards the realization of project outcomes.
Prior to the District, John served briefly in the County’s Department of Public Works and Transportation and the Department of Permitting, Inspections and Enforcement (DPIE) as a Senior Staff Engineer.
Before transitioning to public service, John was a land development consultant at Ben Dyer Associates, Inc., now Atwell, in Millersville. He credits his many years at Ben Dyer as foundational, and excellent preparation for the multiple roles in which he now serves.
John is a practicing professional engineer with licenses in the state of Maryland and the District of Columbia.
Balancing off his professional life, John is engaged in several volunteering roles and activities, always with an eye to giving back to the community at large, and specific causes.
- He is a member of the Honor Society of Phi Kappa Phi. Founded in 1897, Phi Kappa Phi is a multidisciplinary honor society that recognizes and promotes academic excellence in all fields of higher education,
- He’s a Member of the School of Civil Engineering Advisory Board for the UDC School of Engineering and Applied Sciences,
- He’s a Grant reviewer for the Chesapeake Bay Foundation Prince George’s County Stormwater Stewardship Grant Program,
- He serves as a committee member and Merit Badge Counselor for Troop 804 of the Boy Scouts of America out of Millersville, MD,
- He is a Senate of Maryland appointment to the Patuxent River Commission,
- He is an active member of MDSPE and NSPE
- And serves on numerous other state and local technical and policy development bodies.
Topic: Engineering the Future: Implementing Superconducting Maglev Technology in the Northeast Corridor
Bio:
Ian Rainey is Senior Vice President of Northeast Maglev, a U.S. company working to deploy Japanese Superconducting Magnetic Levitation train technology on the Northeast Corridor. Travelling at over 300 mph, Superconducting Maglev will enable a DC to New York travel time of less than one hour.
Ian is a founding partner of several other ventures, including a high-speed rail project in Texas. Prior to entering the private sector, Ian served in government as a Policy Advisor to the Secretary of Defense, and as an officer in the Navy.
Ian is a graduate of the U.S. Naval Academy and The Johns Hopkins University School of Advanced International Studies (SAIS).
Topic: Advancing Stormwater Resiliency in Maryland (A-StoRM) Panel Discussion
Bio:
KC is the Senior Director of Project Services and a Senior Principal at Rodgers
Consulting. He has over twenty years of experience providing land development
consulting for a variety of private clients with land development projects located primarily
in Frederick and Montgomery Counties in Maryland.
As Senior Director, he is responsible for all technical practice areas at Rodgers which
include land planning, environmental sciences, engineering, landscape architecture and
surveying services.
His passion is leading design innovation and integration across Rodgers’ various service
lines focusing on creating optimal solutions through collaboration. Most recently such
innovations have included enhanced stormwater management systems by creating unique
design techniques through the collaboration of civil engineering and landscape
architecture practices.
Since 2023, he has represented the Maryland Building Industry Association (MBIA) as
part of Maryland Department of the Environment’s (MDE) Stakeholder Consultation Group
related to the Advancing Stormwater Resiliency in Maryland (A-StoRM) program. This
program is integral to MDE’s efforts to advance current stormwater management
regulations to account for current and future climate change within the State.