Shifrin & Associates Inc

NPN Environmental Engineers Inc., founded in 1993, is a Fenton, MO-based company known for its commitment to providing practical and economical environmental solutions while prioritizing quality and liability protection. Celebrating its 30th anniversary, the company has established strong relationships across various industries through its integrated environmental services and a team of experienced professionals. The company's extensive range of services includes environmental site assessments, regulatory compliance, and remediation strategies, all tailored to meet the long-term goals of its clients. NPN Environmental distinguishes itself through its dedication to high-quality service, supported by a robust quality assurance and control program led by registered professional engineers. Generated from the website

Tetra Tech is a global leader dedicated to improving the quality of life worldwide through innovative science and technology solutions. The company specializes in addressing complex challenges related to water management, renewable energy, and environmental conservation by leveraging advanced analytics and local expertise. Committed to sustainability, Tetra Tech provides tailored solutions for communities facing issues like climate change and population pressures. Their multidisciplinary team of engineers and scientists focuses on creating resilient infrastructure and enhancing community adaptability through cutting-edge technologies and strategic partnerships. Generated from the website

Shannon and Wilson Inc. is a geotechnical and environmental consultant firm located in St. Louis, Mo. Founded in 1954, the firm provides services for the design and construction of transportation facilities, buildings, civil-work structures, military facilities, industrial plants, infrastructure components and energy generators. It specializes in arctic engineering, geographic information systems, hydrogeology, laboratory testing, seismic and tunneling. The firm also works for the projects in transportation, waterfront facilities, rail and property development for both the public and private sector.