2023 Washington Code 9.18.130 – Collusion to prevent competitive bidding — Penalty

2022 Washington Code 9.18.130 – Collusion to prevent competitive bidding–Penalty

2020 Washington Code 9.18.130 – Collusion to prevent competitive bidding — Penalty

2019 Washington Code 9.18.130 – Collusion to prevent competitive bidding — Penalty

2018 Washington Code 9.18.130 – Collusion to prevent competitive bidding — Penalty

2016 Washington Code 9.18.130 – Collusion to prevent competitive bidding–Penalty

2015 Washington Code 9.18.130 – Collusion to prevent competitive bidding–Penalty

2014 Washington Code 9.18.130 – Collusion to prevent competitive bidding–Penalty

2013 Washington Code 9.18.130 – Collusion to prevent competitive bidding–Penalty

2009 Washington Code 9.18.130 – Collusion to prevent competitive bidding–Penalty