Ability to: perform mathematical computations; read, understand, interpret, explain, and enforce laws, codes, and regulations; read, understand, and interpret technical material and lab analyses; collect and organize field information; write clear and concise reports and maintain records; draw accurate maps of field locations; conduct a wide range of agricultural, hazardous material, fire safety, and/or weights and measures inspection and enforcement functions; gather information and data through interviewing individuals and conducting investigations; offer technical assistance and direction to subordinates; use and maintain department equipment including sensitive weighing and measuring devices; establish and maintain cooperative and effective working relationships; work with uncooperative and potentially hostile individuals; follow oral and written instructions; analyze situations accurately and recommend appropriate action; communicate tactfully and effectively with the public, co-workers, consumers, and industry representatives to provide information or obtain compliance with enforcement actions; safely handle hazardous materials such as herbicides, pesticides, insecticides, gasoline, and propane; maintain situational awareness while confidently approaching unknown environments with changing circumstances; use common office technology and software, databases, and other software products used by the California Department of Food and Agriculture, the California Department of Pesticide Regulation, and the County of Sonoma to carry out regulatory programs; and lift and carry 50 pound objects or containers for short distances; and operate a pickup truck with trailer. Knowledge of: complex mathematics; principles of botany, entomology, plant pathology, physical science, chemistry, and related laboratory techniques; investigative and interview techniques; principles of identification, preservation, and presentation of evidence; techniques of case management, record keeping, and report preparation; Federal, State and local regulations, laws, and procedures in the functional area of agricultural or weights and measures, hazardous material, and fire safety inspection and enforcement; the agricultural industry of Sonoma County; principles of sanitation when handling and testing food products; universal pricing code look up systems; data processing equipment and systems; safety principles and equipment used for handling chemicals and responding to hazardous materials incidents; techniques of case management, record keeping, and report preparation; general law enforcement powers and obligations of the Agricultural Commissioner/Sealer of Weights and Measures; and rules of evidence, investigative techniques, and enforcement and court procedures.