2024 40 CFR 75.46 – Missing data substitution criteria

2023 40 CFR 75.46 – Missing data substitution criteria

2022 40 CFR 75.46 – Missing data substitution criteria

2021 40 CFR 75.46 – Missing data substitution criteria

2015 40 CFR 75.46 – Missing data substitution criteria

2014 40 CFR 75.46 – Missing data substitution criteria

2010 40 CFR 75.46 – Missing data substitution criteria

2009 40 CFR 75.46 – Missing data substitution criteria