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Corporate Partner Profiles


AECOM is the world’s premier infrastructure consulting firm, delivering professional services throughout the project lifecycle – from planning, design and engineering to program and construction management. We partner with our clients in the public and private sectors to solve their most complex challenges and build legacies for generations to come. On projects spanning transportation, buildings, water, governments, energy and the environment, our teams are driven by a common purpose to deliver a better world. AECOM is a Fortune 500 firm and its Professional Services business had revenue of approximately $13.2 billion in fiscal year 2020. See how we deliver what others can only imagine at and @AECOM.


Since 1987, Circlepoint has been a guiding force in helping our clients address complex issues and strengthen communities. Through our Environmental and Communications practice areas, we provide a dynamic combination of strategic advice and focused service. Based in Oakland with offices in San Jose and Orange, Circlepoint is a privately held California corporation and certified SBE.


Circlepoint’s environmental practice is molded on an integrated approach to public and private planning projects—environmental evaluation, design, and community outreach. We work closely with planning and design teams to identify environmental constraints early on, focus environmental documents on the important issues, and effectively involve stakeholders to build the support essential to bringing projects to fruition. We work with our clients, ensuring that we are providing a document that captures the correct components that will pave the way for success during and after the entitlement process.

  • CEQA/NEPA Documentation

    • Environmental Impact Reports

    • Environmental Impact Statements

    • Initial Studies

    • Environmental Assessments

    • FONSI

    • Mitigated Negative Declarations

    • Categorical Exclusions

    • Categorical Exemptions 

  • Environmental Analysis

    • Constraints Analysis

    • Visual Impact Assessments

    • Community Impact Assessments/ Environmental Justice

    • Section 4(f) Evaluation

    • Utilities/Public Services

    • Interagency Coordination          

  • Environmental Technical Partnerships/Strategy

    • Biological Resources

    • Cultural Resources

    • Noise Assessments

    • Air Quality

    • Greenhouse Gases

    • Transportation

    • Hazardous Materials

    • Hydrology & Water Quality



We help our clients navigate the ever-changing landscape of communications and media to engage stakeholders and motivate positive behavior change. Through our strategic process for integrated marketing communications, Circlepoint aligns unique challenges and engages intended audiences through highly effective campaigns. We tailor communication strategies to meet program needs, drawing on our expertise in public engagement, marketing, creative services, and web and interactive design.

  • Public Engagement

    • Strategy

    • Stakeholder Outreach

    • Public Meetings/Workshops

    • Event Planning

    • Media Relations

    • Facilitation

    • Construction Communications

    • Multicultural     

  • Marketing

    • Research

    • Strategy

    • Messaging

    • Behavior Change

    • Campaigns

    • Advertising

    • Email Marketing

    • Social Media    

  • Creative

    • Branding and Identity

    • Graphic Design

    • Animation

    • Photography/Videography

    • Web Design, Development, and Hosting

    • 508 Compliance/Accessibility

    • Analytics


Conaway Geomatics, Inc. is a full-service geospatial firm delivering land surveying, GIS and consulting service focused around providing solutions that meet the clients project requirements. We are a California DGS certified DVBE, Federal certified SDVOSB and LA Metro SBE. We have offices in Placentia and Sacramento, California ensuring our team can provide services throughout California. Conaway Geomatics offers a comprehensive assortment of land surveying and geographical information systems (GIS) services focused on meeting clients project goals and objectives. Our team of experts are experienced in traditional and adaptive geospatial solutions brining a depth of knowledge to any project or project team.

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Founded in 2013, Costin Public Outreach Group (CPOG) is a DBE/SBE public relations firm comprised of strategic communicators and outreach experts with 70-plus years of combined experience. We connect you to the communities you need to achieve your goals. CPOG’s philosophy is that every stakeholder in every community should be involved in delivering a result. From planning to design to construction, we engage communities by providing stakeholders with information and being transparent about a project and its impacts. We build valuable relationships and mobilize stakeholders to be a part of the process. Our team combines their backgrounds in communications, advocacy, marketing, and public affairs to develop and implement integrative communications and outreach programs that inform and engage communities about complex technical issues and help cultivate support for infrastructure improvements. Our team members have worked on signature transportation projects throughout southern California including the Caltrans District 7 I-5 Widening; San Bernardino County Transportation Authority (SBCTA) SB Express Lanes, and Redlands Passenger Rail Project/Arrow.


Since its founding as a two-person land development firm in 1976, David Evans and Associates, Inc. (DEA) has become a recognized leader in the sustainable design of complex transportation, land development, water resources, environmental, and energy projects nationwide. The firm combines the talents of engineers, landscape architects, hydrologists, planners, scientists, and surveyors to provide our clients access to a complete array of services. DEA is consistently ranked among ENR’s (Engineering News Record’s) “Top 100 Pure Design Firms” in the U.S., and is a leader in its local markets.


DEA’s philosophy, values, and commitments shape its unique culture of freedom combined with social and professional responsibility. Our professionals are united behind the firm’s core purpose of improving the quality of life while demonstrating stewardship of the built and natural environments.


For more information about DEA visit us at or find us on social media.

Dewberry is a leading professional services firm with 65+ years of proven history providing architecture, environmental, engineering, and consulting services to a wide variety of clients. Established in 1956 and headquartered in Fairfax, Virginia, Dewberry has more than 55 locations and 2,200 professionals. With over 20 years of experience in California, our engineers apply proven methodologies and technologies to support our clients’ transportation goals to strengthen communities and positively impact “quality of life”. With significant experience in alternative delivery methods, our local knowledge is backed by deep resources and stability of a national firm. We offer proficiency in addressing complex challenges resulting from continued growth, overworked transportation networks, and aging infrastructure. We are problem-solvers, driven by helping our clients develop and maintain efficient transportation systems.

Founded in December 1992, Diaz•Yourman & Associates (DYA) is a privately held geotechnical consulting services corporation. Our reputation has been built on bringing value to client projects with integrity, technical excellence, and timely responsiveness. Our hallmarks are applying the latest technologies, innovation, and construction knowledge to develop practical geotechnical solutions for successful, constructable designs.


With a mission to understand, innovate, partner and deliver, EXP provides engineering, architecture, design, construction management and consulting services to the world’s built and natural environments. Our heritage dates back to 1906, when the earliest of EXP’s predecessor companies started its engineering infrastructure practice. Today, more than 3,500 creative professionals work from over 90 offices delivering successful projects around the world.


As a multidisciplinary practice, EXP has the right blend of expertise and experience to meet the world’s evolving infrastructure challenges. From aviation and transit to rail and ports to bridges and all forms of roadway, we provide a full range of services in transportation to both public and private sector clients. With 40+ years providing engineering and multidisciplinary services supporting alternative project delivery, our team of experts brings experience in all project delivery modes, including P3, DBFOM, design/build and CM/GC, among others.


At EXP, sustainability is embedded in everything we do. Across our practice, we progress forward-thinking solutions that drive value for our clients. We leverage technology to improve sustainable design performance, implement green construction practices and use scientific methods to protect the world’s natural habitats.


EXP is currently working with agencies all over Southern California including Caltrans, OCTA, TCA, SBCTA, RCTC, RCTD, LA Metro, LA County, OCPW, SGVCOG, City of Seal Beach, City of Chino Hills, City of LA, City of Irvine and City of Lake Forest.


Ranked #29 in ENR’s 2020 Top 500 Design Firms, we have been the recipient of more than 200 awards in the last 10 years, including more than 50 recent awards for our transportation projects. We specialize in the transportation systems that connect our communities. Whether by road, air, rail or water, we’ve got it covered.

Guida Surveying, Inc. (Guida) is a multi-discipline land surveying firm that has provided project-based and on-call land surveying and mapping services throughout California since 1995. The firm employs highly skilled field and office survey personnel. By offering a depth of staffing resources, we are able to provide flexibility to accommodate working off-hours as well as variable days and locations, if needed.

Surveying has long held a strong and important place in the Guida family, and we are fully invested in being trusted advisors to our teaming partners. Guida maintains six offices throughout California including Irvine, Ontario, Long Beach, Escondido, Pleasanton, and Fresno, with the over-arching goal of providing well-managed and well-delivered projects. The firm continues to offer the latest industry technology to efficiently solve complex survey challenges. No matter the size of the project— large or small— we are confident in our ability to provide excellent services.

Transportation is a primary focus of our team. We work with numerous public and private clients to support the advancement of California’s transportation infrastructure. Our team brings the technical expertise to deliver the best solutions for any mode of transportation.

Guida maintains SBE certification with the Department of General Services, WBE certification with California Public Utilities Commission, and is registered with the Department of Industrial Relations (DIR).

Land surveying is our foundation, and we are proud to say we do it well.


Harris & Associates (Harris) has served public agencies and private clients since 1974 and is an 100% employee-owned company focused on helping communities solve today’s complex challenges. We have developed a robust program of services that offer our clients expertise and assistance in various realms of engineering services, program and construction management, municipal and district finance, planning, housing, and environmental services. Our offices and project sites span the West Coast in California, Nevada, and Washington with a focus on serving clients in the transportation, municipal, water, and education markets.

At the intersection of growing communities and aging infrastructure, Harris helps clients find lasting, cost-effective solutions. For decades, Harris has helped transportation agencies bypass congestion challenges by providing a full suite of engineering, construction management, and environmental compliance services. We apply our experience to find innovative and cost-saving solutions that enhance safety, sustainability, and quality of life for our communities. In addition, Harris works on some of the nation’s most ambitious transportation projects—including billion-dollar design-build interstate improvements and the California High-Speed Rail Project. We are careful stewards of our clients’ resources and reputation—we hold ourselves accountable for delivering on our commitments and we strive to exceed expectations.

Central to Harris’ business is the practice and implementation of our shared values: Develop and Exhibit Trust; Work Smarter Together; Invest in Our People; Think and Act Inclusively; and Model the Harris Way. These values reflect our character, influence our relationships with our clients and employee-owners, and are leveraged in everything we do. The result is an environment that nurtures, fosters growth, and develops a team that is passionate about their work, has strong internal and external relationships, and delivers quality work.

Visit us at of find us or social media to learn more.


Founded in 1917, HDR Engineering, Inc. (HDR) has been a part of the Southern California business landscape for over 45 years with office locations in Irvine, Riverside, Los Angeles, Long Beach, Claremont, and San Diego. Locally, we have more than 500 professionals whose technical expertise encompass a bevy of planning and engineering disciplines, including transit, roadway, right-of-way, architecture, and construction management services. We are supported by more than 10,000 employee-owners in over 200 locations worldwide. We have completed projects in 60 countries, always following through for our clients and holding ourselves accountable. Our Orange County office was established in 1998 and we have been working with key Orange County agency partners to understand the goals and challenges in delivering their programs.

HDR continues to play a major role in helping local agencies plan and build transportation projects to support the pressing demands for a more resilient infrastructure for future generations. We are leading the way in providing incomparable program management, planning, engineering, and construction management services to deliver some of the most important highway and transit projects in the County, including OCTA’s OC Streetcar PMC, I-5 Widening Segment 2 - Oso Parkway to Alicia Parkway Construction Management, and Regional Rail PMC; and Orange County Public Works’ OC Loop Segment H Bikeway and John Wayne Airport Transportation Study.

For more than a century, HDR has offered a reliable team with outstanding qualifications to shape communities and challenge the boundaries of what’s possible.

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Hill International provides program, project, and construction management services for clients in a range of sectors undertaking major construction projects across the world. Our services include cost engineering and estimating, quality assurance, inspection, scheduling, risk management, and claims avoidance.

We are the 4th largest project and construction management firm in the U.S., as featured in Building Design + Construction magazine. We are also ranked the 6th largest overall U.S. construction management firm by Engineering News-Record magazine. Our team has participated in over 10,000 project assignments with a total construction value of over $600 billion.

Since 1976, we have developed the experience, expertise, and world-class talent that allows us to offer a deeper perspective on our client’s projects. We can quickly and accurately identify the potential risks facing a project, and provide recommendations on how to effectively navigate these risks.

We operate in more than 100 offices across 41 countries. Our regional teams have deep, intuitive local knowledge that helps our clients navigate any potential obstacles. We support this expertise with our wider team of internationally recognized experts.

Our focus as a business is project management, which means we are free of any potential design or contracting conflicts of interest. Our sole purpose is protecting our clients’ needs, managing any potential risks, and delivering projects on time and within budget. Together, we deliver the infrastructure of change.

Founded in 1914, HNTB has built a reputation for excellence and innovation. We help create infrastructure that best meets the unique demands of the environment. With client relationships spanning decades, we understand infrastructure life cycles and have the perspective to solve technical challenges with imagination and innovation. HNTB is a privately held, employee-owned firm, with nearly 5,000 employees in more than 70 locations nationwide. As employee-owners committed to the highest levels of performance, we enable clients to achieve their visions and goals.

HNTB has played an important role in complex infrastructure projects in Southern California for 100+ years, including rail transit design and planning, bridge and tunnel design, transit stations, urban corridor revitalization, highway and interchange design, airports, tolling design, program management, and stadium and convention center development. Our work spans the entire life cycle of projects from planning, through environmental clearance and design to construction and program management.

As planners, we are excited to have been a part of OCTA’s Express Lanes Network Study, Metro’s Sepulveda Transit Corridor Feasibility Study, SANDAG’s Regional Plan development and now the City of Los Angeles’ Valley Boulevard Multi-Modal Transportation Improvement Project. Our recent design work includes iconic projects such as OCTA’s OC Streetcar, the City of Los Angeles’ Sixth Street Viaduct, Metro’s I-405 Sepulveda Pass Widening Design-Build and Brightline West high-speed rail from Victorville, California to Las Vegas, Nevada. Our program and construction management teams are hard at work helping agencies deliver OCTA’s I-405 Improvement Project, SBCTA’s I-10 Express Lanes and now SBCTA’s Ontario Airport Tunnel Project.


HNTB is a proud sponsor of WTS Orange County. We continue to advance women in the industry through providing opportunities to serve in leadership positions, encouraging participation in professional organizations and supporting mentoring, continued development and career growth opportunities.


ICF is a global consulting services company, but we are not your typical consultants. We help clients navigate change and better prepare for the future.


We have a deep bench of 1,000+ environmental science, policy, and technical experts. From environmental program management to transportation, water, and energy projects, our team works together to help clients navigate complex environmental requirements and address the interconnected causes and effects of climate change. For more than 30 years, we've brought a trusted reputation to our work: executing environmental impact assessments, managing complex projects, engaging diverse stakeholders, and navigating multiple layers of regulation.  Our technical expertise—such as conducting cost-benefit analyses and advanced energy analytics—helps our clients achieve sustainability goals within the context of their broader mission.

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At Jacobs, we’re challenging today to reinvent tomorrow by solving the world’s most critical problems for thriving cities, resilient environments, mission-critical outcomes, operational advancement, scientific discovery and cutting-edge manufacturing, turning abstract ideas into realities that transform the world for good. With $14 billion in revenue and a talent force of approximately 55,000, Jacobs provides a full spectrum of professional services including consulting, technical, scientific and project delivery for the government and private sector.


In the transportation market, we help our clients move people, goods, and freight over land, through the air, across the sea, underground and even through mountains. We provide solutions to plan, develop, finance, design, construct, maintain and operate transportation infrastructure to connect people and communities around the world. 


Clients rely on Jacobs to be strategic and practical; to help them save money while being innovative; and to be environmentally sensitive and understanding of community concerns when delivering crucial infrastructure projects. We partner with our clients to provide solutions within and between the transport modes of Aviation, Highways, Bridges, Ports & Maritime and Rail and Transit.

Jacobs brings value through cost-effective solutions and services ranging from transportation planning, design, engineering, and construction management to land development, environmental permitting and support with innovative financing measures and public-private partnerships.

Founded in 1976, LSA is a diversified environmental, transportation, and community planning firm with nine offices throughout California. LSA’s corporate office is located in Irvine with eight additional offices in: Carlsbad, Los Angeles, Riverside, Palm Springs, Fresno, San Luis Obispo, Point Richmond, and Roseville. Because of our large professional and geographic bandwidth, our 200+ team members are capable of rapidly deploying throughout the State to assist clients with their project needs including:

  • Support for all aspects of CEQA and NEPA Compliance and Mitigation Requirements

  • Environmental Documentation

  • Mitigated Negative Declarations (MNDs)

  • Initial Study (IS) Checklists

  • Environmental Notices

  • Environmental Impact Reports (EIRs)

  • Responses to Comments

  • Peer Review of Environmental Technical Reports

  • Biological Resource Studies

  • Air Quality

  • Climate Change

  • Noise and Vibration

  • Greenhouse Gas (GHG) Analysis

  • Sustainability Planning

  • Cultural Resources

  • Paleontological Resources

  • Water Quality

  • Native American Consultation Services

  • Traffic Analysis and Transportation Planning

  • Graphics and Geographical Information System (GIS) Services

To achieve the highest level of service, LSA assigns skilled professionals (many of whom are recognized experts in their fields) to provide the required consultant services. All projects are overseen by a Principal in Charge to ensure a high level of expertise and quality control. All substantial work products are reviewed at the Principal level. LSA has over 44 years of experience helping clients navigate the often-complex process of environmental review and transportation planning in California.


Mark Thomas provides civil and structural engineering, active transportation design, construction management, grant writing, landscape architecture, planning & urban design, and surveying services to clients throughout California. Since our founding in 1927, we have focused on providing excellent client service and delivering projects with a tailored approach to meet our clients’ goals. We work closely with public agencies and municipal clients to deliver creative, innovative, yet cost-effective transportation infrastructure enhancements.


Mark Thomas is a recognized industry leader in the planning, design, and delivery of local roadway as well as highway and state route improvements, including roadway extensions and widenings; low-flow crossing improvements; highway and interchange improvements; intersection modifications; drainage facilities; access and safety improvements, complete street projects, and multimodal facilities throughout the state. We have delivered hundreds of projects for various public agencies and numerous cities and bring an extensive working knowledge of Caltrans, AASHTO, and local design manuals and guidelines, as well as public agency procedures. One of our firm’s most notable achievements is the design of the state’s first Diverging Diamond Interchange (DDI) at SR-120/Union Road Interchange in the City of Manteca. This project is just one example of how innovative engineering, strong partnerships, and community outreach can come together to create creative transportation solutions that enhance safety and benefit communities.


With a reputation not only for producing quality deliverables, but a friendly and engaged staff that truly cares about integrating into and supporting the community, Mark Thomas is thriving as a successful partner to our clients throughout Southern California.

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Michael Baker International is a leading provider of engineering and consulting services, including planning, environmental, architectural, engineering, construction, and program management. We have been solving some of the world’s most complex infrastructure challenges for over 80 years, and our team of more than 3,000 professionals has achieved this through a legacy of expertise, experience, innovation, and integrity.

With nearly 100 offices nationwide, including 12 throughout California, Michael Baker International partners with clients on multidiscipline projects ranging in complexity – from transportation systems involving roads, bridges, tunnels, mass transit, and airports to master planned communities, urban design, environmental sciences, ecosystem restoration, water resource facilities, arctic oil pipelines, and specialized overseas construction. We are trusted advisers to the communities we serve, always with a focus on making them safer, more accessible, sustainable, and prosperous.

Within southern California, Michael Baker International has a robust transportation practice that is responding to the multifaceted congestion challenges facing our public- and private-sector clients. Our services include extensive work using various Alternative Delivery Methods (ADM) to deliver projects within the local roadway network and on the state highway system, as well as in the space of emerging technologies such as Broadband, Intelligent Transportation Systems (ITS) and Connected/Automated Vehicles (C/AV).

The Michael Baker International team members deliver innovation with every project – challenging the status quo through the diversity of their experience and ideas.

We Make a Difference.

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In 1945, John G. Moffatt and Frank E. Nichol formed partnerships in California and Oregon to provide engineering and design services to the growing marine infrastructure of the West Coast of the United States. Initially, Moffatt & Nichol concentrated on harbor works and waterways, bridges, buildings, industrial facilities, military installations, and public works. Since our founding, Moffatt & Nichol has expanded its service areas to offer transportation economics and finance; port and transportation planning; environmental planning, mitigation, and restoration; coastal and water resources engineering; and construction management, supervision, and inspection. To accomplish these services, Moffatt & Nichol offers clients a professional and experienced staff of transportation economists; port, transportation, and environmental planners; and civil, structural, mechanical, electrical, coastal, water resources, and construction engineers.  


Moffatt & Nichol has completed planning, feasibility and modeling studies, analysis and evaluation, preliminary and final designs, opinions of probable costs, and/or construction documents on projects worldwide. Typical projects include highways, site development, site utilities, waterfront development, oil and cargo terminals, mooring systems, wharves for commercial and military ships, vessel navigation, dry docks, shiplifts, boat harbors, marinas, dredging, bulkheads, shore protection, breakwaters, causeways, artificial islands, and wetlands restoration. Other projects completed by Moffatt & Nichol include buildings, hangars, pump stations, mechanical and utility systems, stormwater and flood control devices, and bridges. 


Moffatt & Nichol’s headquarters are located in Long Beach, California. In the United States, we have branch offices located along the West Coast, Gulf Coast, and East Coast. Moffatt & Nichol also has international branch offices located in Brazil, Canada, Chile, Colombia, England, and Panama. Our clients include national and international public and private organizations, such as port authorities; federal, state, and local governments; developers; and contractors. Drawing on the expertise offered in our 44 offices to provide clients with the best possible products, Moffatt & Nichol personnel from any of our offices are frequently assigned to support projects conducted around the world. Client satisfaction is illustrated by the facts that more than eighty percent of our work is completed for repeat clients and we have been in business for more than 75 years. 


Monument is a woman-owned, full-service real estate and right-of-way company with offices in Irvine and Sacramento, California. We are a certified SBE and DBE serving local, state and federal agencies; transportation authorities; and engineering partners on building and improving public infrastructure throughout California. Monument specialize in project management, property acquisition, relocation assistance, cost estimating, feasibility studies, and other professional services for transportation, energy, utility, flood control, housing, and other public infrastructure projects.


What truly sets Monument apart from our competitors is our Team.  We have the most experienced and respected program and project managers in the right-of-way industry.  Our acquisition and relocation agents are seasoned and focused on working closely with our clients. Our entire Team, from top to bottom, works together to ensure client and project success.  We don’t just say it, we do it.


At Monument we implement our Company motto with every project we touch. . . we listen, innovate and deliver.  We plan strategically, which allows us to innovate and adapt quickly to changing situations, rather than simply react.  We tailor every program to fit the specific needs of the project. Monument breaks the mold of traditional real estate and right-of-way consulting services.  We’re dedicated to fulfilling client needs and exceeding expectations through strategic planning, innovation and seamless execution.


For more information about Monument check us out at or contact our President and CEO, Amber Costello, at

On the move in Southern California


In Orange County, Mott MacDonald has been the Program Management Consultant for OCTA since 2004. Backed by the voter-approved OC Go tax measure, we are supporting OCTA in delivering numerous highway and rail projects.

In Los Angeles, we’re the prime designer for LA Metro’s Regional Connector, linking up light rail lines across the city.

In San Bernardino County, we’re helping SBCTA create an innovative zero emissions passenger rail vehicle.

From highways and bridges to subways, rail lines, and airports, Mott MacDonald is at the forefront of transportation planning and infrastructure — in Southern California, the US, and around the world.

We’re committed to designing the smart cities of the future. We search for the opportunity to add value – technical, economic, environmental, and social, by thinking laterally and searching out connections others fail to make. We aim to improve society by considering social outcomes in everything we do with focus on excellence and digital innovation, transforming our clients’ businesses, our communities, and staff opportunities.

Mott MacDonald ( is a $2 billion global management, engineering, and development firm. Our 16,000 employees and more than 180 offices serve clients in 150 countries worldwide.

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Nossaman LLP is an innovative national law firm working seamlessly across the United States with offices in Los Angeles, San Francisco, Orange County, Sacramento, San Diego, Washington, DC, Austin, and Seattle.  For nearly 80 years, Nossaman has delivered the highest quality legal expertise and policy advice to clients nationwide.  The Firm focuses on distinct areas of law and policy, as well as in specific industries, ranging from transportation and energy to real estate development, water, and government. 


We help bring transportation projects to fruition.  We lay the legislative groundwork, clear environmental hurdles, acquire the necessary right-of-way, devise procurement strategies, and close the deals that bring opportunities to our communities.


We work on highways, tollways, light and heavy rail, tunnels, bridges, airports, and ports.  Our work ranges from establishing habitat conservation plans to precondemnation planning and development of intermodal legislative policy.  Our attorneys work with financial and technical advisors, architects, engineers, consultants, and construction firms.  Our experience enables us to see potential issues years before they may arise.  Our strategic view helps clients manage risk and deliver projects on time.


Nossaman has been engaged on the development of some of the most important transportation initiatives in Orange County.  Projects have included representation of Orange County Transportation Corridor Agencies in the construction, operation, and maintenance of Orange County’s linear toll road system, with more than 51 miles of freeway constructed to date; defense of actions challenging environmental approvals for San Joaquin Hills Transportation Corridor; defense of the Foothill/Eastern Transportation Corridor Agency’s environmental approvals for bridge safety; and leading the Orange County Transportation Authority’s I-405 Improvement Project legal team in the largest highway upgrade in Southern California, which will relieve pressure on one of the state’s most congested corridors.


Nossaman has been a proud partner of WTS-OC for many years, and our commitment to a diverse and inclusive environment is rooted in our core values.  We believe an inclusive environment and consideration of diverse perspectives are crucial to creating the ideal workplace.  Unquestionably, diversity enhances our ability to serve clients and creates a more dynamic workplace for everyone. 

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Paragon Partners Consultants, Inc., provides innovative right of way strategies and solutions to public and private clients who require land rights services to build and improve infrastructure. Headquartered in Cypress, California, Paragon leverages the technical acumen and expertise of more than 130 right of way professionals in real estate/right of way Acquisition and Negotiation, Property Disposition, Property Management, Title, GIS, Condemnation, Project Management, and more. Project teams strictly enforce federal and state regulations policies while actively listening to the concerns of landowners, business owners, and residents to gain insights that promote successful outcomes for all stakeholders. Committed to advancing the goals and initiatives of our clients, project teams have been driving deliverables to the extreme satisfaction of our clients, within budget and on schedule, for nearly 30 years. Paragon is part of the CLS Family of Companies which proudly offers best-in-industry land services with the bench strength to serve our clients anywhere in the country.


Contact us to learn more and discuss your project needs at Paragon Partners Consultants, Inc.

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Dedicated to balancing the natural and built environment, Psomas provides sustainably engineered solutions to public and private sector clients. As a full-service consulting firm, we help our clients create value by planning, designing, and delivering complex projects.

Markets served include transportation, water, land development, and energy with the following services offered:

  • Civil engineering

  • Survey and geospatial services including use of drones, 3D laser scanning and subsurface utility locating

  • Site development engineering

  • Transportation and traffic engineering

  • Structural engineering

  • Water and wastewater engineering

  • Environmental planning and resource management

  • Land planning and urban design

  • Land use entitlements

  • Project/Construction management

  • GIS consulting

Psomas is a recognized leader and longtime proponent of environmental, social, and economic sustainability and brings a truly holistic approach to our practice and our projects. A founding member of the Institute for Sustainable Infrastructure (ISI), Psomas is committed to promoting a progressive standard of sustainability in both design and through company policy. We currently have over 100 staff who are ENV SPs (Envision Sustainability Professionals through ISI) and/or LEED APs.

The cornerstone of our business approach is to first focus on our clients’ long-term needs and then direct our strategic growth accordingly. Our core strength is our multi-disciplined teams of experts—top-notch staff who produce award-winning projects for our clients through innovation, creativity, and cutting-edge technical expertise.

Founded in 1946, Psomas provides services from offices throughout California, Arizona, Utah, and Washington.

Founded in 2000, RailPros (a division of RailPros Consolidated, Inc.) currently provides services to public transit agencies and private rail carriers nationwide. RailPros employs more than 825 professionals whose specialties include design, construction management, planning, program and project management, inspection, safety and flagging, staff augmentation support, training, and media production. Our licensed professional engineers, many with more than 20 years of industry experience each, are actively involved in rail industry professional organizations and in the development of the railroad industry’s engineering standards and best practices.

RailPros’ contracts range from short-term maintenance and inspection contracts for small agencies and privately-owned rail lines to large national (both public and private) clients who demand comprehensive and complex design services and exacting accounting procedures on multi-year contracts. We bring decades of experience with local, state, and federal agencies and rail operators, including OCTA, SCRRA, LA Metro, SANDAG, SBCTA, RCTC, NCTD, the Ports of Los Angeles and Long Beach, BNSF, and UPRR.


Communities are fundamental. Whether around the corner or across the globe, they provide a foundation, a sense of place and of belonging. That's why at Stantec, we always design with community in mind.

We care about the communities we serve—because they're our communities too. This allows us to assess what's needed and connect our expertise, to appreciate nuances and envision what's never been considered, to bring together diverse perspectives so we can collaborate toward a shared success.

When you begin with the end in mind, you create meaningful change. This philosophy guides how we approach every transportation infrastructure and transportation technology project. Our consistent driver? Providing people with better and smarter mobility options. We create connections that get people and goods moving—whether by car, bus, train, airplane, or their own two feet.

Working within the context of the communities we serve, we provide planning, detailed engineering and design, construction inspection, construction management, program management, and traffic operations services that fill the needs of our clients and advance transportation system experiences.

Rated the #7 international design firm in transportation (ENR 2021), we focus on providing solutions that respect the community and local environment, from major expressway and rural roadway projects to bridge rehabilitations, transit systems, smart transportation, and airport design. We design this way because we have the same goals as everyone else—to get where we’re going, safely and efficiently.

This is how we elevate communities.

The Stantec community unites approximately 22,000 employees working in over 350 locations across 6 continents. We're designers, engineers, scientists, and project managers, innovating together at the intersection of community, creativity, and client relationships. Balancing these priorities results in projects that advance the quality of life in communities across the globe.

Visit us at or find us on social media.

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For more than 50 years, TranSystems has provided engineering and architectural planning, design, and construction solutions to enhance the movement of goods and people across today’s integrated transportation infrastructure. As a private company owned 100 percent by our employees, we are committed to providing our employees a challenging workplace, and we value professional development and teamwork. We reward and value quality, innovation, and safety in performing our services.

In Southern California, TranSystems is proud to serve our local communities and clients, such as OCTA, LA Metro, and Caltrans Districts 12, 8, and 7. We are actively delivering some of our region’s most high-profile and complex highway improvements, including the I-5 Segment 2 Widening from Oso Parkway to Alicia Parkway, the I-5 North Improvements in Santa Clarita, and numerous highway and roadway rehabilitation, maintenance, ADA accessibility, and safety improvements throughout Orange, Los Angeles, and San Bernardino counties for Caltrans.

Southern California Leaders:

Ayman Salama, PhD, PE – Principal, Senior Vice President. A bridge and structures design expert with 33 years of experience. Ayman is a highly-effective leader and mentor to all of our technical staff and trusted advisor to clients.

Camilo Rocha, PE – West Region Senior Vice President. An industry leader with 32 years of experience. Camilo is experienced in all aspects of client service and project delivery, focusing on meeting client expectations for budget, schedule, and quality. Camilo has served as a Mentor for WTS on several occasions.

Tom Ionta, PE – Senior Project Manager, Vice President. An experienced and effective project manager with 42 years of experience. Tom is an expert in highway project delivery and a focused team leader driving our ability to achieve client goals and objectives.

Joe Sawtelle, PE – Project Manager, Vice President. An expert in highway/roadway design and team leader with 27 years of experience. Joe is an innovative thinker who provides clients with solutions to complex challenges, often offering cost and time-saving solutions. Joe has served as a Mentor for WTS on several occasions.


Twining is a full-service engineering company with unmatched technical expertise. Our services span from QA/QC, materials testing, and inspection, to highly technical capabilities in applied Geotechnical, engineering, and integrated disciplines. With laboratories throughout California and a deep bench of engineers, technical experts, materials scientists, technicians, and inspectors, we are unequaled in our core competencies to serve the built environment.


About T.Y. Lin International

T.Y. Lin International (TYLI) is a full-service, professional engineering firm focused on the planning, design, and construction of infrastructure solutions for public and private clients worldwide. The firm is an internationally recognized pioneer in solving the most difficult engineering challenges. Headquartered in San Francisco, California for over 65 years, TYLI has more than 3,200 professionals throughout the Americans and Asia.

What distinguishes TYLI?

TYLI’s reputation for taking on the most challenging engineering problems – and solving them – speaks for itself. Our clients commend our ability to provide:

  • Breadth of Experience

  • Commitment to Service

  • Award-Winning Designs

  • State-of-the-Art Technology

  • Knowledge of Code/Standards

  • Multidisciplinary Project Teams


  • Architecture

  • Code Services

  • Construction Engineering and Inspection

  • Construction Management

  • Construction Phase Services

  • Design

  • Environmental

  • Mechanical and Electrical Engineering

  • Planning

  • Program Management

  • Seismic Analysis and Design

  • Structural Engineering

  • Surveying

DAR Group

TYLI is a member of the Dar Group (, a privately owned international network of professional services firms, with over 19,820 staff operating from 297 offices across 60 countries. The DAR Group is dedicated to the planning, design, engineering and project management of facilities, installations and structures that contribute to the sustainable advance of communities worldwide.


UltraSystems Environmental Inc. (UltraSystems) is a full-service planning and environmental consulting firm, founded in 1994 and headquartered in Irvine, California. Over 27 years, UltraSystems has provided over 7,000 environmental reports, technical studies and other consulting services to public and private sector clients throughout California.

UltraSystems employs 42 talented and experienced urban and environmental planners, scientists, archaeologists, biologists, geologists, hydrologists, engineers, Geographic Information Systems (GIS) specialists and support staff. In addition, our firm has under contract up to 100 individuals to supplement existing workloads.  Lastly, our firm has master service agreements (MSAs) with 50 firms

Preparing and peer-reviewing California Environmental Quality Act (CEQA) and National Environmental Policy Act (NEPA) documents has been a core service of UltraSystems since our founding.  We can conduct almost all the supporting technical studies with inhouse staff, including highly specialized efforts such as jurisdictional delineations, focused special-status species surveys, air pollutant dispersion modeling and health risk assessments, and hazardous materials investigations. Wherever possible, we help integrate environmental impact considerations into project planning, design and review. We coordinate with local, state, federal and other governmental agencies; manage public participation programs; issue necessary legal notices; and distribute draft and final documentation. Creating legal defensibility is our goal on all our projects.  None of our CEQA documents has been successfully challenged in a court of law.

In addition to our CEQA/NEPA work, UltraSystems helps our clients obtain permits from natural resources agencies and air pollution control districts; conducts noise studies; carries out large-scale cultural resources investigations for the U.S. Navy; and provides onsite environmental monitoring services at construction projects and landfills.

Our extensive transportation experience includes bridges, complete street design projects, road widening, grade separations, signalization, bus stations, transit maintenance facilities, airport development, and urban light rail projects. We provided years of on-call consulting services to the Los Angeles County Metropolitan Transportation Authority (Metro) and the Ports of Los Angeles and Long Beach. One of our specialties is assisting cities and counties who receive local assistance grants from the Federal Government comply with Caltrans requirements, such as preparing preliminary environmental studies (PESs) and NEPA-based technical studies.

VCS logo.jpg

Vandermost Consulting Services, Inc. doing business as VCS Environmental (VCS) was founded in 1996. VCS is a California S Corporation. We have a staff of 25 professionals who are located at our corporate office at 30900 Rancho Viejo Road, Suite 100, San Juan Capistrano, CA 92675. VCS maintains a Disadvantaged Business Enterprise (DBE) and Small Business Enterprise (SBE) certification through the LA Metro California Unified Certification Program, a Woman Business Enterprise (WBE) certification through the California Public Utilities Commission, a WBE/SBE Certification through ORCA Federal registration, Small Business (Micro) certification through the California Department of General Services and SBE/DBE certification through the Orange County Transportation Authority. VCS is registered with the Department of Industrial Relations (No. 1000513423).

VCS Environmental is dedicated to delivering quality, personalized, multi-disciplinary services to a variety of municipalities, private sector clients, and state and federal agencies. Our services include:



■     Prepare/process California Environmental Quality Act (CEQA) documents

■    Prepare/process National Environmental Policy Act (NEPA) documents

■     Public presentations/technical translation of CEQA/NEPA documents to the community and decision makers



■     Biological technical reports

■    Vegetation mapping

■    Focused surveys for endangered species

■    Biological assessments and Endangered Species Act Section 7 consultations

■    Western Riverside County Multiple Species Habitat Conservation Plan, surveys, reports, and HANS process

■    Conservation easements

■    Construction monitoring



■    Delineation of wetlands and waters of the U.S. and State

■    U.S. Army Corps of Engineers, Section 404 permits

■    U.S. Army Corps of Engineers, Section 408 processing

■    California Department of Fish & Game, Section 1602, and maintenance agreements

■    Regional Water Quality Control Board, Section 401 certifications

■    Regional Water Quality Control Board, Waste Discharge Requirements

■    U.S. Environmental Protection Agency 404(b)(1) alternatives analyses

■    Constraints and feasibility analyses

■    Biological Monitoring


■    Area of potential effect mapping

■    Phase I cultural and paleontological assessments

■    Phase II resource evaluation and testing

■    Phase III data recovery/mitigation studies

■    Phase IV construction monitoring mitigation programs

■    Historic resources evaluation reports

■    Worker environmental awareness training

■    Native American scoping and consultation

■    Fossil salvage, identification, evaluation, and preparation for curation

■    Caltrans studies and documentation (HPSR, ASR, HRER, FOE, PIR, PER, PMP, et al.)

■    Site recordation on DPR 523 series site recording forms

■    Section 106 of the National Historic Preservation Act compliance

■    Construction monitoring


■    Fire Master Plan

■    Fuel Modification Plans

■    Fire Behavioral Analysis

■    Alternative Means and Methods



■    Mitigation Bank document preparation, processing and sales

■    Habitat Mitigation, Monitoring, and Reporting Plans (HMMP) and Implementation

■    HGM and CRAM analyses

■    Coordination with landscape design and maintenance contractors

■    Preparation of annual reports


■    CEQA/NEPA documents and technical studies

■    Regulatory permit applications and strategies

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