Okla. Admin. Code § 252:515-41-12
(d) Recyclable material. All roofing material that is intended for recycling must be kept in either containers or piles. Roofing material stored on the ground while awaiting processing shall be placed in piles, as follows:
(g) Weighing roofing material. Each load of roofing material received shall be weighed on scales tested and certified in accordance with the requirements of the Oklahoma Department of Agriculture, Food and Forestry.
(h) Daily log. A daily log shall be maintained for each load of roofing material received. The daily log shall reflect: