Agenda - Council - 02/28/1984 - Laserfiche WebLink

Home

I I I I I i I I I I I I I I I I I I -9- Ce hJ The trash trap shall be readily accessible for inspection and effective cleaning and shall be so constructed as to prevent unauthorized entry. The aeration compartment shall have a minimum holding capacity of 500 gallons or 120 gallons per bedroom, whichever is greater. The method of aeration shall be acomnplished by mechanical aeration, diffused air, or both. The method used shall maintain aerobic conditions at all times. The settling compartment s~all have a m~nimum net holding capacity equal to 20 percent of the volume of the aeration compartment. The design shall provide for effective settling and continuous return of settled sludge to the aeration compartment. A minimum one year warranty and an initial two year service contract which specified regular inspection calls and effluent quality checks shall be provided as a part of the purchase agreement. All other features of the aerobic tanks not specifically mentioned above shall comply with National Sanitation Foundation Standard No. 40 (November 1970). Subd. 3 CAPACITY The liquid capacity of a septic tank serving a dwelling shall be based on the n~m~er of bedrooms contemplated in the dwelling and shall be at least as large as the capacities given below. Ntm~r of Bedrooms Tank Liquid Capacities (gallons) 3 or less 1,000 4 1,250 5 1,500 For each additional bedroom, add 250 gallons. ESTABLISHMENTS The liquid capacity of a septic tank serving an establishment other than a dwelling shall be sufficient to provide a sewage detention period of not less than thirty-six (36) hours in the tank for flows less than one thousand five hundred (1,500) gallons per day, but in no instance shall the liquid capacity be less than one thousand (1,000) gallons. For flows greater than one thousand five hundred (1,500) gallons per day, the minimum liquid capacity sbm]l equal one thousand one hundred twenty-five (1,125) gallons plus seventy-five per cent (757o) of the daily sewage flow rate, which shall be determined by mmasurement or estimated from data provided by the agency. Subd. 4 LOCATION 1. The sewage tank shall be placed so that access is convenient for the removal of liquids and accumulated solids.