Cathodic protection includes gathering annual pipe-to-soil surveys, gathering rectifier readings and troubleshooting rectifier units, performing interference testing, and recommending, designing, overseeing installation, completing as-built drawings for needed cathodic facilities, and completing project closure reports. Basic Math skills (addition, subtraction, multiplication, division, fractions, decimals, etc.) Competencies, skills, and abilities: Must respond to, and address, callouts and emergencies during and after regular business hours including after dark hours, which requires carrying a communication device.