(a) Any records, reports or information obtained under this chapter shall be available to the public; except, that upon a showing satisfactory to the commission by any person that records, reports or information, or particular part thereof, other than emission data, to which the commission has access if made public would divulge production or sales figures or methods, processes or production unique to such person or would otherwise tend to affect adversely the competitive position of such person by revealing trade secrets, the commission shall consider such record, report or information, or particular portion thereof, confidential in the administration of this chapter.
(b) Nothing in this section shall be construed to prevent disclosure of such report, record or information to federal, state or local representatives as necessary for purposes of administration of any federal, state or local air pollution control laws or when relevant in any proceeding under this chapter.