The following implementation schedule must be complied with to meet the requirements of RCW 49.80.020 for a skilled and trained workforce to perform all on-site work within an apprenticeable occupation in the building and construction trades:

(1)(a) By January 1, 2021, at least twenty percent of the skilled journeypersons must be graduates of an apprenticeship program for the applicable occupation approved by the Washington state apprenticeship and training council under chapter 49.04 RCW;

(b) By January 1, 2022, at least thirty-five percent of the skilled journeypersons must be graduates of an apprenticeship program for the applicable occupation approved by the Washington state apprenticeship and training council under chapter 49.04 RCW;

(c) By January 1, 2023, at least forty-five percent of the skilled journeypersons must be graduates of an apprenticeship program for the applicable occupation approved by the Washington state apprenticeship and training council according to chapter 49.04 RCW; and

(d) By January 1, 2024, at least sixty percent of the skilled journeypersons must be graduates of an apprenticeship program for the applicable occupation approved by the Washington state apprenticeship and training council according to chapter 49.04 RCW; and

(2) By January 1, 2022, all workers in the skilled and trained workforce must have completed within the past three calendar years at least twenty hours of approved advanced safety training for workers at high hazard facilities.