What must be done if a building is more than 300 feet from a sewer line and has flow less than 1500 gpd?

If a building is more than 300 feet from a sewer line and has a flow rate of less than 1500 gallons per day (gpd), the appropriate action is to install a septic system. This is due to regulations that govern wastewater management in areas where sewer services are not readily accessible.

In such cases, a septic system is necessary to manage and treat wastewater on-site. This ensures that the wastewater is properly handled, protecting public health and the environment. The system typically involves a septic tank that separates solids and liquids followed by a drain field that allows the treated effluent to be absorbed into the ground.

The other options are not suitable in this context. Connecting to the sewer would not be feasible given the distance from the sewer line, and since the building is beyond 300 feet from the sewer, it is unlikely that an exemption would apply. Additionally, stating that no action is required is inaccurate, as proper management of the building's wastewater is essential for compliance with health and safety regulations.