Okla. Admin. Code § 252:515-43-60

Current through Vol. 42, No. 8, January 2, 2025

Section 252:515-43-60 - Composting time

Composting time and temperatures shall meet the following requirements:

(1)Windrow composting. The compost material must be maintained at a minimum average temperature of 55°C (131° F) or higher for 15 days or longer. The 15 or more days at or above 55°C (131° F) do not have to be continuous.

(2)Aerated static pile or in-vessel composting process. Material maintained at a minimum average temperature of 55°C (131° F) or higher for three continuous days, followed by at least 14 days with a minimum of 45°C (113° F).

(3)Passive pile. Material maintained below 75°C (170° F) for the active composting period. Finished compost must meet standards as specified in the permit or plan.

(4)Hybrid composting. Material maintained as specified in the permit or plan.

Okla. Admin. Code § 252:515-43-60

Adopted by Oklahoma Register, Volume 34, Issue 24, September 1, 2017, eff. 9/15/2017