The trial court had allowed government expert witnesses to testify at the trial about the technical terms of the treatment plant's permit, including the limitations on waste discharge into the ocean [REF].
The defendants also argued that the statute must be unconstitutionally vague, because of the absence of a requirement that they knew they were violating the law, and the fact that key provisions of the permit, in particular those that were debated at trial, have no established meaning [REF].