2023 Washington Code 19.122.030 – Excavator and facility operator duties before excavation

2022 Washington Code 19.122.030 – Excavator and facility operator duties before excavation

2020 Washington Code 19.122.030 – Excavator and facility operator duties before excavation

2019 Washington Code 19.122.030 – Excavator and facility operator duties before excavation

2018 Washington Code 19.122.030 – Excavator and facility operator duties before excavation

2016 Washington Code 19.122.030 – Excavator and facility operator duties before excavation

2015 Washington Code 19.122.030 – Excavator and facility operator duties before excavation

2014 Washington Code 19.122.030 – Excavator and facility operator duties before excavation

2013 Washington Code 19.122.030 – Excavator and facility operator duties before excavation

2009 Washington Code 19.122.030 – Notice of excavation to owners of underground facilities — One-number locator service — Time for notice — Marking of underground facilities — Costs