Summit Materials is a leading construction materials company that supplies aggregates, cement, ready-mixed concrete and asphalt paving mix. Combining vertical integration with an interdependent company structure, we provide increased efficiencies and economies of scale while empowering operating companies to make local, well-informed decisions. By teaming up with established local businesses, we are committed to creating value, providing access to growth capital, implementing best practices and offering a safe place to work while striving to exceed our environmental and social responsibilities. Formed in 2009, Summit Materials currently has 12 platform companies in 21 states and British Columbia, Canada. Under CEO Anne Noonan, Summit Materials continues to drive growth and productivity across our operating companies, delivering shareholder value. Further information is available at www.summit-materials.com.

RES is the world’s largest independent renewable energy company, working across 24 countries and active in wind, solar, energy storage, biomass, hydro, green hydrogen, transmission, and distribution. An industry innovator for over 40 years, RES has delivered more than 24 GW of renewable energy projects across the globe and plans to bring more than 22 GW of new capacity online in the next five years. As a service provider, RES has the skills and experience in asset management, operations and maintenance (O&M), and spare parts – supporting 41GW of renewable assets across 1,300 sites. RES brings to the market a range of purposeful, practical technology-based products and digital solutions designed to maximise investment and deployment of renewable energy. RES is the power behind a clean energy future where everyone has access to affordable zero carbon energy bringing together global experience, passion, and the innovation of its 4,500 people to transform the way energy is generated, stored and supplied.

Frontline Road Safety Group is the largest provider of pavement marking services in the United States through the many best-in-class operating companies we feature in our portfolio. With deep operational leadership, technical expertise, and a premium quality of execution, we provide pavement marking solutions that are unparalleled. Join our team of suppliers and become a part of our dedication to excellence.

With over 25 years of leadership in heavy construction and civil infrastructure, we are a full-service contractor regarded for completing high-quality construction projects safely, ahead of schedule, and within budget parameters. This is due entirely to our employees who live for achieving quality workmanship within owner specifications. Clients trust SEMA because we provide sole-source responsibility, delivering value to you. Self-performing 70% of major construction work scopes; we are fast, flexible, and efficient. Approximately 80% of our construction services are for government entities, with the majority awarded to us via a competitive bid process including traditional, design-build, CM/GC, and public-private partnership. Consistently ranked as one of the nation’s top contractors, SEMA is a collaborative partner that brings integrated product delivery methods and award-winning construction solutions to every project. Construction, Inc. is a full-service construction firm.

As individuals we are impassioned by the American West. As a firm we are its students, and its stewards. What compels us about the West? The panoramas. The severity. The scarcity. The pragmatic people. It's emphatic, but subtle. It's rugged, but delicate. Enormous in complexity and nuance, the Western landscape has been the crucible of our firm's values, and of our expertise. DHM was founded over four decades ago in Denver. One of our earliest projects was the master plan for Genesee, a residential development committed to the preservation of its views, open space, and unique foothills ecosystem. Since then, we have opened offices in Carbondale and Durango, Colorado, and Bozeman, Montana. From an original focus on the front range, our geographic base has expanded throughout the Great Basin and beyond. The scope of our work now includes planning and design for resort and residential communities, historic properties, civic spaces, local and National Parks, tribal lands, legacy ranches and high-end residences. Given the nature of the West, a great deal of this work addresses very large sites. Much of that has been conducted in the region's monumental National Parks, where we have been restoring degraded environments and enhancing visitor experiences since our earliest days. The ethos of the National Parks, and the conservation and design principles we have practiced in them, translate to every project we take on. We are designers, and we are environmentalists. What we do is both art and science. We pursue the synergies between human patterns and natural systems. On every DHM project, landscape architects and ecologists work shoulder-to-shoulder. This blurring of boundaries and collaboration across disciplines has been our practice since we began. What has our long and intimate connection with the West taught us? To cherish the region's environment. To honor its cultural heritage. To know that both are fragile. To speak plainly. And to listen.

Asphalt Specialties Co., Inc. is a Colorado family-owned heavy highway contractor. We have been providing quality products and construction services throughout the Front Range of Colorado for over 30 years. We specialize in asphalt paving, patching, as well as grading and earthwork. We supply a full range of building materials including aggregates, asphalt and recycled aggregate products from our many aggregate locations.

Lightning Ventures Inc is a health, wellness and fitness company based out of 1750 Tomah Rd, Larkspur, Colorado, United States.

Formed in 1985, ARS Companies have provided construction services to Western US customers for over 30 years. Headquartered in Denver, Colorado ARS Companies operates under the values of Trust, Communication, Loyalty, Vision, and Accountability The ARS Companies is a privately held consortium consisting of six separately managed lines of business. These lines consist of Soil Stabilization, Asphalt Recycling Services, Structural Concrete Services, Railway Trans-loading, Land Development Services, and Sand & Gravel Services. All ARS lines of business maintain a safety program with a zero accident – zero incident goal. Creating a safe work environment for ARS workers and the public is priority one. The ARS Companies belongs to various local and national affiliations, among them, AGC – Associated General Contractors Association, CCA – Colorado Contractors Association, and CAPA – The Colorado Asphalt Producers Association.

CEI Constructors is built by our team’s unmatched dedication and talent, leading Colorado's heavy civil industry since 1986. Our self-performing team offers expert transportation, structures & bridges, site development, earthwork, utilities, stream restoration, fleet, and fabrication services to clients. Our team of Front Range members takes great pride and responsibility in seeing that our clients and community are the direct recipients of superior and sustainable results.

For more than 150 years, McCarthy has been building America, both by constructing essential projects our communities rely on, as well as by helping those in our communities who need assistance. As one of the oldest American-owned construction companies with offices nationally, knowing how to build from early in the design phase through completion is a tradition that will continue as we endeavor to advance the value of our expertise and deliver the highest quality, job-site safety and ultimately, the best final project costs. We strive to challenge and positively impact our industry. Unlike many firms of our size, we are true builders, surpassing client expectations on the most complex building challenges. McCarthy has built in nearly every state, with projects ranging in size from $1 million to well over $500 million in a wide variety of markets including healthcare, university, laboratory & science, K-12 education, commercial, government, renewable energy and heavy/civil. McCarthy is proud to be an equal opportunity and affirmative action employer regardless of race, color, gender, age, sexual orientation, gender identity, religious beliefs, marital status, genetic information, national origin, disability or protected veteran status. At McCarthy, our equal pay commitment is simple: fair and equitable pay for all employees. We work diligently to ensure there are no disparities in salary based on gender, race or sexual orientation. We review individual compensation adjustments using a bi-annual compensation analysis to ensure no disparities occur. We do the right thing, which means ensuring equitable pay for work done in comparable roles McCarthy Building Companies, Inc. is a McCarthy Holdings, Inc. company.

Since 1973, HEI Civil has been a preferred, full-service heavy civil construction partner for our clients. Located just south of Denver, CO, our expertise includes highways, bridges, commercial, residential, oil field, site development, dams, reservoirs, parks and golf courses. From design build turn-key development of your project, to civil general construction for your entire project, we are happy to be a subcontractor to your GC or CM for the earthmoving and underground utility portions of your job.

Based out of Evergreen, Colorado, ESCO Construction Company is a fourth-generation, family owned and operated business. We specialize in Earthworks, Underground Utilities, Concrete, and Equipment & Mechanics. As a growing company, ESCO has assembled an impressive team of highly capable employees that has helped us extend our capabilities and coverage across the Front Range.