2024 40 CFR 141.23 – Inorganic chemical sampling and analytical requirements

2023 40 CFR 141.23 – Inorganic chemical sampling and analytical requirements

2022 40 CFR 141.23 – Inorganic chemical sampling and analytical requirements

2021 40 CFR 141.23 – Inorganic chemical sampling and analytical requirements

2020 40 CFR 141.23 – Inorganic chemical sampling and analytical requirements

2019 40 CFR 141.23 – Inorganic chemical sampling and analytical requirements

2016 40 CFR 141.23 – Inorganic chemical sampling and analytical requirements

2015 40 CFR 141.23 – Inorganic chemical sampling and analytical requirements

2014 40 CFR 141.23 – Inorganic chemical sampling and analytical requirements

2010 40 CFR 141.23 – Inorganic chemical sampling and analytical requirements

2009 40 CFR 141.23 – Inorganic chemical sampling and analytical requirements