Under general direction, supervises, assigns, reviews, and participates in the work of staff in an assigned section of the environmental sciences laboratory and/or staff responsible for environmental compliance and regulatory efforts regarding ocean monitoring, source control, regulatory resources, environmental audits, air quality, water quality, and/or biosolids management; ensures work quality and adherence to established policies and procedures; performs the most technical and complex tasks relative to assigned areas of responsibility; and performs duties as assigned. These responsibilities include industrial, commercial, and non-industrial wastewater inspections; wastewater collection system monitoring; sampling and quality assurance; industrial pretreatment system evaluations; compliance investigations; special studies; emergency response; waste hauler permitting and enforcement; and non-industrial source control programs involving fats, oils, and grease, dental amalgam, dry-weather urban runoff, and other emerging or nontraditional pollutant sources.