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WPD | Solid Waste Compliance - Used Oil Generator

Solid Waste Compliance Assistance

Used Oil Generator

Revised On: Apr. 18th, 2024 - 01:03 pm

Revised On: Jan. 22, 2024 - 3:00 p.m.

Common Violations & How to Prevent Them

Proactively managing used oil at your facility not only protects public health and the environment, it prevents violations and can save owners and operators sizable costs related to enforcement. Following are the most common violations and requirements and best practices to prevent them.

Improper labeling1

Containers and above-ground tanks that store used oil at generator facilities must be labeled or marked clearly with the words “Used Oil" affixed to the tank.

Improper clean-up2

Upon used oil release detection into the environment, a generator must perform the following cleanup steps:

  1. Stop the release.
  2. Contain the released used oil.
  3. Properly manage and clean up the released used oil.
  4. If necessary, repair or replace any leaking used oil storage containers or tanks prior to returning them to service.

Improper storage3

Containers and above-ground tanks used to store used oil at generator facilities must be in good condition, meaning no severe rusting, apparent structural defects or deterioration, and not leaking or no visible leaks.

Visit the used oil page for more information | Learn More >


140 C.F.R. § 279.22(c) | View > and A.R.S. § 49-802(A) | View >
2A.R.S. § 49-802(A) and 40 C.F.R. § 279.22(d) | View >
3A.R.S. § 49-802(A), 40 C.F.R. § 279.22(b) | View > and 40 C.F.R. § 279.45(b) | View >