What must a licensed engineer do prior to design approval for a septic system exceeding 750 gallons?

A licensed engineer must agree to monitor the installation and submit as-built plans for a septic system exceeding 750 gallons to ensure that the system is constructed according to the approved design and specifications. This step is crucial because larger septic systems have a greater potential impact on public health and the environment. By monitoring the installation, the engineer can confirm that the system is installed correctly and in compliance with the regulatory standards that govern septic systems in Tennessee. Submitting as-built plans afterwards provides a detailed account of how the system was actually built, which is essential for future maintenance and compliance assessments.

The other choices do not align with the requirements for design approval. Providing a fee for services rendered is a standard business practice but does not pertain specifically to the regulatory process of septic system approval. Registering design plans with state authorities is often required, but in this context, the focus is on monitoring and submission of as-built plans. Conducting a site evaluation without soil testing is inadequate, as proper soil evaluation is critical in determining the suitability of the land for septic systems.