SECTION 252:641-7-2. Types of tanks

(a)   Concrete tanks. Concrete tanks shall be reinforced with rebar or fiber, and constructed of a mix which demonstrates a twenty-eight-day compressive strength of four (4) thousand pounds per square inch (4,000 psi). They may be poured in place or precast, but, in either case, shall be monolithically poured and mechanically vibrated.

(b)   Fiberglass and plastic tanks. Fiberglass and plastic tanks shall meet either IAPMO or CSA standards for septic tanks and shall be installed according to the manufacturer's recommendations. If the tank does not bear the IAPMO or CSA mark, then DEQ will require the installer to submit documentation from IAPMO or CSA stating the tank meets the above standards.

[Source: Added at 16 Ok Reg 1895, eff 6-11-99; Amended at 19 Ok Reg 1704, eff 6-13-02; Amended at 21 Ok Reg 1618, eff 6-11-04; Amended at 25 Ok Reg 2318, eff 7-11-08]