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(; ) The outlet baffle and baffles between compartments 414 <br /> shall extend below the design liquid level a distance <br /> equal to forty (40) percent of the design liquid depth, <br /> except in horizontal cyl. .i.ndrical tanks where this • <br /> dimension shall be thirty-five (35) percent of the <br /> design liquid depth. Baffles shall extend above the <br /> design liquid level as required in 404.03(4) , however <br /> in no case shall they extend less than six (6) inches <br /> above the design liquid level . <br /> (8) There shall be a minimum of one ( 1 ) inch between the <br /> underside of the top of the tank and the highest point <br /> of the inlet and outlet baffles. <br /> (9) The inlet invert shall be not less than three' (3) <br /> inches above the outlet invert. <br /> ( 10) Sanitary tees used as baffles shall be a minimum of <br /> four (4) inches in diameter. Inlet baffles shall be <br /> not less than six (6) inches or more than twelve ( 12) <br /> inches measured from the end of the inlet pipe to the <br /> nearest edge of the baffle. Outlet baffles shall be <br /> six (6) inches, measured from the end of the outlet <br /> pipe to the nearest edge of the baffle. <br /> ( 11 ) Access to the Septic Tank shall be as follows: <br /> There shall be one or more manholes, at least <br /> twenty (20) inches least dimension located within • <br /> six (6) feet of all walls of the tank . The <br /> manhole shall extend through the cover to a point <br /> within twelve (12) inches below finished grade. <br /> The manhole cover shall be covered by at least six <br /> (6) inches of earth. <br /> b. There shall be an inspection pipe of at least four-. <br /> (4) inches diameter or a manhole over both the <br /> inlet and outlet baffle device. The inspection <br /> pipe shall extend through the cover and be capped <br /> flush with or above finished grade. ty downward <br /> prosection of the center line of the inspection <br /> pipe shall be directly in line with the center <br /> line of the inlet and outlet baffle device. <br /> ( 1.2) Compartmentation of Septic Tanks, Septic Tanks larger <br /> than three thousand (3,000) gallons and fabricated as a <br /> single unit shall be divided into two (2) or more <br /> compartments as follows: <br /> a. When divided into two (2) compartments, not less <br /> than one-half nor more than two-thirds (2/3) of <br /> the total volume shall be in the first <br /> compartment , at the inlet side of the tank . <br /> 14 <br />