Delta Environmental Consultants

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.

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

Professional Environmental Engineers is a full-service engineering and consultancy firm that specializes in providing environmental consulting and remediation construction services. It provides a variety of environmental consulting and assessment services, such as radon sampling, regulatory compliance, site characterization, and risk and noise assessment. The company s range of environmental remediation services includes site closures, structures decontamination, brownfield cleanup and rapid response. Additionally, it offers wetland, predesign and geotechnical soil investigations. The company also provides lead, asbestos, mold and geophysical surveying services. In addition, it offers remediation of contaminated debris, soil, surface water, groundwater and abatement design services. The company provides wastewater management plans and soil vapor extraction pilot tests to its clients.