2024 36 CFR 212.57 – Monitoring of effects of motor vehicle use on designated roads and trails and in designated areas

2023 36 CFR 212.57 – Monitoring of effects of motor vehicle use on designated roads and trails and in designated areas

2022 36 CFR 212.57 – Monitoring of effects of motor vehicle use on designated roads and trails and in designated areas

2021 36 CFR 212.57 – Monitoring of effects of motor vehicle use on designated roads and trails and in designated areas

2020 36 CFR 212.57 – Monitoring of effects of motor vehicle use on designated roads and trails and in designated areas

2019 36 CFR 212.57 – Monitoring of effects of motor vehicle use on designated roads and trails and in designated areas

2016 36 CFR 212.57 – Monitoring of effects of motor vehicle use on designated roads and trails and in designated areas

2015 36 CFR 212.57 – Monitoring of effects of motor vehicle use on designated roads and trails and in designated areas

2014 36 CFR 212.57 – Monitoring of effects of motor vehicle use on designated roads and trails and in designated areas

2010 36 CFR 212.57 – Monitoring of effects of motor vehicle use on designated roads and trails and in designated areas

2009 36 CFR 212.57 – Monitoring of effects of motor vehicle use on designated roads and trails and in designated areas