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I <br />I <br />I <br /> <br /> I <br /> ! <br /> <br />'1 <br />I <br />I <br /> I <br /> I <br /> I <br /> <br /> I <br /> I <br /> I <br /> I <br /> I <br /> <br /> 14. There shall be an inspection pipe of at least four (4) <br />.inches aiameter or a manhole over both the inlet and outlet devices.' <br />The inspection pipe shall extend through the cover and be flush with, <br />or no more than six (6) inches below, the finished grade. The top of <br />the inspection pipe shall be provided with a readily removable water- <br />tight cap. A downward projection of the center line of the inspection <br />pipe shall be directly in line with the center line of the inlet or <br />out]et device. <br /> <br /> 15. Compartmentation. Septic tanks larger than three thous- <br />and (3,000) gallons and fabricated as a single unit shall be divided <br />into two (2) or more compartments. <br /> <br />a. When a septic tank is divided into two (2) compart- <br /> ments, not less than one-half (1/2), nor more than <br /> two-thirds (2/3) of the total volume, shall be in the <br /> first compartment. <br />b. Wq~en a septic tank is divided into three (3) or <br /> more compartments, one-half (1/2) of the total <br /> volume shall be in the first compartment and the <br /> other one-half (1/2) equally divided in the other <br /> compartments. <br /> <br /> ]6. Connections between compartments shall be baffled so as <br />to obtain effective retention of scum and s]udg~. Tbe submergence of <br />the inlet and outlet baffles of each compartment_shall be as specified <br />in paragraphs 7 and 8 above. <br /> <br /> ]7. Adequate venting shall be provided between compartments <br />by baffles or by an opening of at least fifty (50) square inches near <br />the top of the compartment wall. <br /> <br /> 18. Adequmte access to each compartment shall be provided by <br />one (1) or more manholes, at ]east twenty (20) inches in dimension, and <br />located within six (6) feet of any wall of the tank. The manhole shall <br />extend to a point within twelve (12) inches, but not closer than six <br />(6) inches, below finished grade. The manhole cover shall be covered <br />with at least six (6) inches of earth. <br /> <br /> 19. Idmre more than one (1) tank is used to obtain the required <br />liquid volume, the tanks shall be connected in series. <br /> <br />a. Each tank shall comply with ail other provisions of <br /> Chapter 150.014C. <br />b. No more than four (4) tanks in series can be used to <br /> obtain the required liquid volume. <br />c. The first tank shall be no smaller than any subse- <br /> quent tanks ~n series. <br /> <br />Subd. 3 CAPAC] 'I¥ <br /> <br />I)WI~I.L:I NaS <br /> <br />The liquid capacity of a septic tank serving a dwelling shall be based <br />on the number of bedrooms contemplated in the dwelling and shall be at <br /> <br /> <br />