During warmer months, heat from warm air is transferred to the heat exchanger and into the fluid. As it moves through the pipes, the heat is dispersed to the rocks, soil, and groundwater. The pump is reversed during the colder months. Heat energy stored in the relatively warm ground raises the temperature of the fluid. The fluid then transfers this energy to the heat pump, which warms the air inside the building.
While individual states generally govern how long medical records are to be retained â HIPAA. rules require a Medicare Fee-For-Service provider to retain required documentation for six. years from the date of its creation or the date when it last was in effect, whichever is later.
How long do we need to keep our training records / employee files / medical records once an employee stops working for our laboratory? Training Records: OSHA requires that you retain training records for employees for three years. We recommend that you keep employee training records for the length of employment plus a minimum of five years. Check Federal and State Employment laws for Retention of Employee records.