In the context of installing a septic system, what do plans usually include?

In the context of installing a septic system, plans typically include application documents and topographic maps. These components are crucial as they provide detailed information about the land where the septic system will be installed. Application documents often contain essential data required for regulatory approval, which ensures that the system complies with local health and safety regulations. Topographic maps are important for understanding the land's contours, which affect water drainage and the placement of the septic system components, such as the drain field and tank. By having this information, installers can make informed decisions to optimize the system's performance and longevity, ensuring that it operates effectively without causing environmental harm or health risks.