11. In all, an estimated half-million gallons of waste oil . 12. Then it was just waste oil , a junk byproduct. 13. The plant recycles waste oil , thus keeping used oils out of landfills and burning pits. 14. The waste oil is incinerated in a controlled environment. 15. Waste oil containing PCBs leached into the soil.16. The recycled waste oil was collected from restaurants, and included discarded animal parts, fat and skin. 17. Huang also dumped approximately 10, 000 gallons of waste oil in the basement of the theater. 18. This was due to the presence of waste oil , fuel, solvents, and pesticides in the soil. 19. Many restaurants use a portable oil filtration system to transport waste oil to a disposal area. 20. In 2013, The group launched a production of biodiesel based on animal fats and waste oils .
