There is a newer version of the Revised Code of Washington
2005 Washington Revised Code RCW 90.52.020: Confidentiality as to manufacturing processes.
The department of ecology shall provide proper and adequate procedures to safeguard the confidentiality of manufacturing processes: PROVIDED, That the confidentiality shall not extend to waste products discharged into the waters or air of the state.
[1971 ex.s. c 160 § 2.]
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