USCG Exam PracticePollution prevention and environmental awareness
Under 33 CFR §151.10, what is the maximum oil content of effluent, without dilution, permitted when discharging oily bilge water from machinery spaces more than 12 nautical miles from the nearest land while proceeding enroute?
- A. Less than 100 parts per million
- ✓ Less than 15 parts per millionCorrect
- C. Not more than 50 parts per million
- D. Not more than 25 parts per million
Why B is correct
33 CFR §151.10(a)(5) requires that the oil content of the effluent without dilution be less than 15 ppm as one of the conditions that must all be satisfied before discharge is permitted beyond 12 nautical miles. The 15 ppm threshold also appears in the definition of clean ballast at 33 CFR §151.05.
Cited:33 CFR §151.10