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White Construction began as a small family-owned trucking and excavating company in the 1940s. Since our founding, the organization has grown tremendously, become a part of IEA and even reached publicly-traded status—yet the values that the White family instilled in the company remain core to our culture today. White Construction is a subsidiary of Infrastructure and Energy Alternatives, Inc. (IEA), a leading infrastructure construction company with specialized energy and heavy civil expertise. In 2022, IEA and its affiliated companies were acquired by MasTec and are now part of the organization's Clean Energy and Infrastructure segment. At White Construction, we're able to leverage these companies' robust resources, diverse capabilities and national reach to deliver even greater value to our customers.

Alvah Group acts as the General Contractor and Program Manager for large scale utility projects and Master Service Agreements handling all aspects necessary to complete projects in a timely and safe fashion; and provide continuous Project time line and cost monitoring to allow our customers to have complete visibility into their spend. Alvah Group, Inc. is a certified MBE in the State of California. Alvah Group relies on the expertise of its affiliated companies, Alvah Contracting, LLC, Utility Construction Services, Inc., Utility Traffic Control Services, Inc. and Utility Traffic & Restoration, Inc. to provide seamless operations to its customer. These entities are uniquely focused on all aspects of construction for the Electric Power Industry. These services include Overhead line construction and Replacement; Underground line construction and maintenance; Duct work and manhole installation and maintenance, site restoration and all aspects of traffic control. The operating entities specialize in working in dense urban areas/city centers but are equally at home in suburban/rural environments.

Byers Engineering Company was founded in 1971. The company's first client was New York Telephone Company (now Verizon), which remains a client today. This longevity is evidence of Byers' long-term business commitment to providing clients with high-quality, high-value products and services that exceed their expectations. Byers provides outside and inside plant design, planning, project management, inspection, and right of way acquisition services, both wireline and wireless, for RBOCs, ILECs, CLECs, IXCs, utilities, cable television companies, and commercial organizations throughout the United States. Byers also provides leading-edge AM/FM/GIS software, data conversion, mapping and records services throughout the world.

Phoenix Industrial is a mid-sized heavy industrial general contractor headquartered in Vancouver, Washington. Our well-trained, motivated employees are our greatest asset, allowing us to excel at self-performing complex projects. We are known for our excellent safety record and ability to complete tough jobs in remote locations. Each project receives the full attention of everyone on our team, from the skilled craftsmen on the ground all the way up to the company president. Our approach emphasizes transparency and expert estimating so that our clients have realistic and competitive pricing early in the process and know what it will truly take to complete a project.

Decisive Communications is a turn-key solution based organization providing a full suite of services in the telecommunications industry. Decisive provides customers versatile and carefully managed workforces in the following areas: Construction Management, Fiber Restoration, Technical Staffing, Broadband Fulfillment Services, Specialty Services and Information Technology Development all designed to create an end to end experience for our clients. Creating an exceptional customer experience is the driving force behind our work.

Bianchi Electric is an electrical utility contractor with complete transmission, substation and underground construction capabilities. Headquartered in Dallas/Fort Worth, Texas, the company specializes in utility installation, supporting ET&D projects from start to finish and tackling customers’ most complex and technical service challenges. Bianchi’s high-voltage capabilities are diverse, and include engineering and construction management, underground, transmission and substation construction and maintenance.

Founded by Sam Saiia as Birmingham Excavating Co. in 1946, the company now known as Saiia is an industrial heavy civil contractor of choice for the power generation, mineral and aggregate mining, and pulp and paper markets. With more than 630 pieces of construction machinery in our fleet, over 500 employees, and experience working in 11 states, we have the resources and knowledge to complete projects of any scale.

Energy Environment Group (EEG), is a EC Source subsidiary company, committed to serving all environmental aspects of ECS' large-scale EHV energy infrastructure projects and development.