2024 40 CFR 141.40 – Monitoring requirements for unregulated contaminants

2023 40 CFR 141.40 – Monitoring requirements for unregulated contaminants

2022 40 CFR 141.40 – Monitoring requirements for unregulated contaminants

2021 40 CFR 141.40 – Monitoring requirements for unregulated contaminants

2020 40 CFR 141.40 – Monitoring requirements for unregulated contaminants

2019 40 CFR 141.40 – Monitoring requirements for unregulated contaminants

2016 40 CFR 141.40 – Monitoring requirements for unregulated contaminants

2015 40 CFR 141.40 – Monitoring requirements for unregulated contaminants

2014 40 CFR 141.40 – Monitoring requirements for unregulated contaminants

2010 40 CFR 141.40 – Monitoring requirements for unregulated contaminants

2009 40 CFR 141.40 – Monitoring requirements for unregulated contaminants