Section 27-0919. Proprietary information

The  department shall hold confidential any information concerning the
  chemical composition, quantity,  method  of  treatment  or  disposal  of
  hazardous  waste  or  any  information related thereto when shown by any
  person that such information, if made public, would divulge  competitive
  business  information,  methods  or  processes entitled to protection as
  trade secrets of such  person,  except  that  such  information  may  be
  disclosed  to  any  officers, employees or authorized representatives of
  the United States or the state concerned with carrying out RCRA  or  the
  state  hazardous  waste  program  or  when  relevant  in  any proceeding
  thereunder.