USCG Exam PracticePollution prevention and environmental awareness
Under 33 CFR §151.05, 'clean ballast' is defined in part by the oil content of its effluent when discharged through an approved oil discharge monitoring and control system. What oil content threshold makes the ballast determinatively 'clean' under that system?
- ✓ Oil content of the effluent does not exceed 15 ppmCorrect
- B. Oil content of the effluent does not exceed 100 ppm
- C. Oil content of the effluent does not exceed 50 ppm
- D. Oil content of the effluent does not exceed 25 ppm
Why A is correct
33 CFR §151.05 states that when ballast is discharged through an approved oil discharge monitoring and control system, evidence that the oil content of the effluent does not exceed 15 ppm is determinative that the ballast is clean. This is the same 15 ppm threshold used for oily mixture discharge under §151.10.
Cited:33 CFR §151.05