RULE 407.

(a) Lumber which has been treated with liquid preservative chemicals shall not be handled aboard a vessel less than 24 hours after treatment.

(b) Lumber treated with NP-1® sapstain control chemical shall not normally be handled aboard a vessel less than 12 hours after treatment.

If it is necessary to handle lumber prior to 12 hours after treatment, the employees shall be advised and appropriate personal protective equipment shall be provided to those handling the lumber.

No lumber shall be loaded aboard a vessel less than 4 hours after dipping.