Tutor Perini Corporation (NYSE: TPC) (the “Company”), a leading civil, building and specialty construction company, announced today that its subsidiary, Perini Management Services, Inc. (PMSI), has been awarded a contract valued at approximately $41.9 million by the National Park Service for the repair of critical utility systems in the Glen Canyon National Recreation Area in Arizona.

The project consists of the design and construction of comprehensive upgrades to the wastewater infrastructure serving the Wahweap and Lone Rock developed areas. The primary objective is to revitalize aging systems by replacing outdated components with modern materials and equipment, ensuring long-term reliability and environmental compliance. The upgraded systems will be designed to meet or exceed the regulatory standards established by the Arizona and Utah Departments of Environmental Quality, as well as all applicable State regulations.

The project scope includes cured-in-place pipe (CIPP) lining and repairs to existing sanitary sewer infrastructure; upgrades and replacements of septic systems, manholes, and lift stations; replacement of the Glen Canyon Bridge force main; installation of backup generators for lift stations to enhance system resilience; and modernization of the Supervisory Control and Data Acquisition (SCADA) system, including local upgrades at Wahweap and Lone Rock and enhancements to the park-wide radio communication network.

Work is commencing immediately with substantial completion anticipated in the fall of 2027.

About Tutor Perini Corporation

Tutor Perini Corporation is a leading civil, building and specialty construction company offering diversified general contracting and design-build services to private customers and public agencies throughout the world. We have provided construction services since 1894 and have established a strong reputation within our markets by executing large, complex projects on time and within budget while adhering to strict safety and quality control measures. We offer general contracting, pre-construction planning and comprehensive project management services, and have strong expertise in delivering design-bid-build, design-build, construction management, and public-private partnership (P3) projects. We often self-perform multiple project components, including earthwork, excavation, concrete forming and placement, steel erection, electrical, mechanical, plumbing, heating, ventilation and air conditioning (HVAC), and fire protection.

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