Whenever any records or other information, other than ambient air quality data or emission data, furnished to or obtained by the department of ecology or the board of any authority under this chapter, relate to processes or production unique to the owner or operator, or is likely to affect adversely the competitive position of such owner or operator if released to the public or to a competitor, and the owner or operator of such processes or production so certifies, such records or information shall be only for the confidential use of the department of ecology or board. Nothing herein shall be construed to prevent the use of records or information by the department of ecology or board in compiling or publishing analyses or summaries relating to the general condition of the outdoor atmosphere: PROVIDED, That such analyses or summaries do not reveal any information otherwise confidential under the provisions of this section: PROVIDED FURTHER, That emission data furnished to or obtained by the department of ecology or board shall be correlated with applicable emission limitations and other control measures and shall be available for public inspection during normal business hours at offices of the department of ecology or board.