2024 42 USC 8906 – Updated data base on acid content in precipitation; new monitoring site not required

2023 42 USC 8906 – Updated data base on acid content in precipitation; new monitoring site not required

2022 42 USC 8906 – Updated data base on acid content in precipitation; new monitoring site not required

2021 42 USC 8906 – Updated data base on acid content in precipitation; new monitoring site not required

2020 42 USC 8906 – Updated data base on acid content in precipitation; new monitoring site not required

2018 42 USC 8906 – Updated data base on acid content in precipitation; new monitoring site not required

2017 42 USC 8906 – Updated data base on acid content in precipitation; new monitoring site not required

2015 42 USC 8906 – Updated data base on acid content in precipitation; new monitoring site not required

2014 42 USC 8906 – Updated data base on acid content in precipitation; new monitoring site not required

2013 42 USC 8906 – Updated data base on acid content in precipitation; new monitoring site not required

2012 42 USC 8906 – Updated data base on acid content in precipitation; new monitoring site not required

2010 42 USC 8906 – Updated data base on acid content in precipitation; new monitoring site not required