🔍 Key Concepts

• Oil Pollution Act / Clean Water Act reporting requirements • The meaning of a visible sheen on the water surface • Who you notify when there is a reportable marine pollution incident

💭 Think About

• Think about what actually makes an oil spill "reportable"—is it the volume, or the effect it has on the water? • Which agency or office is legally designated to receive reports of oil discharges into U.S. navigable waters? • Does the fact that the spill is small (1/4 liter) change the requirement if it still creates a sheen?

✅ Before You Answer

• Verify what condition (e.g., sheen, discoloration, sludge, emulsion) triggers mandatory reporting, regardless of the amount spilled. • Identify which option corresponds to the federal authority responsible for marine pollution reporting, not just local responders. • Confirm that the "less than 1 barrel" idea does not override the basic rule about any visible sheen on navigable waters.