Septic tanks must be reasonably accessible to facilitate inspection and maintenance activities after installation is complete.Before the tank is covered, take photos related to the tank access. Risers and lids may be used to elevate access to a point closer to finished grade. If lids will be subject to vehicular traffic, they should conform to the American Association of State Highway and Transportation Officials H-20/HS-20 standard (wheel load of 16,000 pounds on a tire contact area of 8 inches by 20 inches).Risers that are integral with the tank are optimal to achieve and maintain a watertight connection. Concrete risers may
