IBI Group

Tetra Tech is one of the leading providers of specialized management consulting and technical services. The company focuses on the areas of resource management, infrastructure, and communications. Tetra Tech was founded to provide engineering services related to waterways, harbors and coastal areas. The company has since increased the size and scope of its business and expanded its service offerings through a series of strategic acquisitions and internal growth. Tetra Tech provides environmental services, water and wastewater management, infrastructure services, security design and outsourced technical services. The company had nearly 7,500 employees located in more than 250 offices throughout the world. Tetra Tech was founded in 1966 and is based in Pasadena, Calif.

HDR is a global company with a focus on addressing some of the world's most significant challenges across various sectors, including healthcare, infrastructure, and environmental sustainability. With over 13,000 employees and 200 offices worldwide, HDR is dedicated to delivering innovative solutions that enhance communities and improve lives. Committed to fostering talent and promoting diversity, HDR empowers its workforce to grow and thrive while working collaboratively to create impactful designs and strategies. The company's expertise spans a wide range of markets, ensuring a comprehensive approach to project delivery and client satisfaction. Generated from the website

Pettit Inc. is a comprehensive engineering, architectural, and construction management firm based in Corona, CA, specializing in a wide range of civil engineering and design services. With over 20 years of experience, the company is committed to delivering quality projects efficiently through its integrated design-build approach, minimizing the need for external consultants. The company prides itself on its in-house expertise across multiple disciplines, ensuring reliable budget control and consistent schedule adherence. Pettit Inc. focuses on providing tailored professional services to meet specific client needs while promoting community support and cultural awareness throughout the project lifecycle. Generated from the website