With general direction, performs site investigations and basic to high complexity analysis and interpretation of site data. Leads small field teams and significantly contributes to the process of applying site data to further the preferred project approach. With general direction, prepares environmental studies (e.g., NEPA documents, field reports, feasibility studies, etc.) of basic to high complexity. Collaborates with scientists, engineers, and construction staff to implement the approved approach (e.g., restoration, remediation, etc.). Provides advice and expertise on the selected project approach. May contribute to design and lead field inspections. Provides technical guidance and training to more junior staff. Mentors more junior staff and develops them for future growth within the discipline and firm. May supervise the work of junior engineers on project work. Collaborates with sales staff to create proposals in response to current and potential client requests for proposal (RFPs). Reviews draft proposals for adherence to firm, industry, state, local and federal regulations and best practices. Meets with current and potential future clients to review their current and future design needs. Contributes to firm's TKM by developing white papers and technical design documentation of new or special case designs, studies, etc. Submits technical papers and designs for publishing to technical journals. Performs other duties as required. Attends conferences, symposia, etc. to improve the visibility of the firm's products and services in collaboration with applicable sales staff.