Land Management Workforce Flexibility Act (LMWFA): If you are applying under LMWFA, you must submit ALL Appointment AND Termination SF-50s for EACH appointment verifying the Position Occupied code 1-Competitive Service (block 34); AND Documentation of satisfactory performance for each period of temporary employment claimed, such as, performance evaluations, memorandum of record, whereas the supervisor(s) documented an acceptable performance level for a specified rating/employment period. Installs, modifies, repairs, tests, and disinfects new and existing water supply mains and laterals, low pressure oil-fired and gas-fired steam and hot water boilers, furnaces, and space heaters, and related piping, and supply, and disposal systems and equipment such as sewage, water, oil, and gas distribution systems.