1978-09-14 Septic System Design Report

Home Browse Search

• J. Sanitary tees shall be at least four inches in diameter. Inlet baffles shall be no less than six inches or no more than 12 inches measured from the end of the inlet pipe to the nearest point on the baffle. Outlet baffles shall be six inches meas- ured from beginning of the outlet pipe to the nearest point on the baffle. K. Access to the septic tank shall be as follows: (1) There shall be one or more manholes, at least 20 inches least dimension, and located within six feet of all walls of the tank. The manhole shall extend through the cover to a point within 12 inches but no closer than six inches below finished grade. The manhole cover shall be covered with at least six inches of earth. (2) There shall be an inspection pipe of at least four inches diameter or a manhole over both the inlet and outlet devices. The inspection pipe shall extend through the cover and be capped flush or above finished grade. A downward projection of the center line of the inspection pipe shall be directly in line with the center line of the inlet, or outlet device. L. Multiple tanks • (1; Where more than one tank is used to obtain the required liquid volume, the tanks shall be connected in series. • (2) Each tank shall comply with all other provisions of Section I. A. (3) No more than four tanks in series can be used to obtain the required liquid volume. MAINTENANCE SUGGESTIONS - Inspect the tank annually and have the tank cleaned when the scum is 3 inches or less above the outlet baffle and/or when the sludge level is 8 inches or less below the outlet baffle. 3. LOCATION A. The sewage tank shall be placed so that access is convenient for the removal of liquids and accumulated solids. B. The sewage tank shall be placed on firm and settled soil capable of bearing the weight of the tank and its contents. - 5 -