SECTION 252:645-3-3. Septage storage tank requirements

(a)   Watertight. All septage storage tanks located at a septage storage facility shall be watertight.

(b)   Composition. All septage storage tanks shall be constructed of concrete or metal.

(1)   Concrete tanks can be used either above or below ground. They may be poured in place or precast, but, in either case, shall be monothilically poured and mechanically vibrated. They shall be:

(A)   reinforced with rebar or fiber; and

(B)   constructed of a mix that demonstrates a twenty-eight-day compressive strength of four thousand pounds per square inch (4,000 psi).

(2)   Metal tanks may only be used above ground. Metal tanks shall be:

(A)   properly protected by paints or other protective coating to prevent corrosion; and

(B)   secured to prevent tipping or rolling.

(c)   Manholes. Below ground septage storage tanks shall have a manhole with a cover that extends a minimum of two inches (2") above ground elevation.

(d)   Venting. All septage storage tanks shall be vented to the atmosphere with the vent pipe terminating above the top of the tank in a full one hundred eighty-degree bend.

(e)   Capacity. Septage storage tanks shall have a minium capacity of one thousand (1,000) gallons.

(f)   Separation distances. Septage storage tanks may not be located within:

(1)   one hundred feet (100') of a private water supply well, or surface waters (lakes, rivers, streams, intermittent streams, wetlands or ponds);

(2)   three hundred feet (300') of a public water supply well;

(3)   fifty feet (50') of an occupied residence;

(4)   ten feet (10') of a property line;

(5)   a one hundred-year floodplain; or

(6)   five feet (5') of a water line.

(g)   Signage. All above-ground septage storage tanks shall have the following displayed in letters at least four inches (4") high:

(1)   the word "SEPTAGE";

(2)   the name and license number of the facility owner; and

(3)   the phone number of the person to be contacted in case of an emergency.

[Source: Added at 27 Ok Reg 2158, eff 7-11-10]