Which of the Following Actions Would Require the Company to Obtain

Which of the following actions would require the company to obtain a permit for discharge from the EPA?

A) Releasing water back into a stream after it was used in production with the only change being its temperature.
B) Releasing water back into a stream after it was used in production, but in a state cleaner than it entered the factory.
C) Releasing water into a pond on company property.
D) Releasing water from a power plant cooling tower into the ocean.
E) All of the above would require an EPA permit.