All measurement notes, rating curves, calculations, and data logs should be retained as long as practicable, and copies made available to the department when requested.
[Statutory Authority: RCW
90.03.360,
90.44.050, [90.44.]250, [90.44.]450 and chapter
43.21A RCW. WSR 02-02-017 (Order 00-01), § 173-173-180, filed 12/21/01, effective 1/21/02.]