EPA Modeling and CAST Overview (1hr 32 min.)
This webinar is from 2020 and overviews CAST. It would be good to understand the principles behind the model. This will help explain why BMP reporting and verification is important.
The following sections are required viewing for this webinar:
(6:30-23:00) Overview and summary of CAST
(49:00-51:30) Inputs to the model that may affect milestone updates and progress reporting that the county sees.
(1:05:00-1:11:00) Discusses how influential the ag census and animal populations as well as change in crop types, etc. are in affecting nutrient loading in the model between CAST versions in different years. It also discusses some effective BMPs to deal with nutrient loading coming from these sources. This section also covers CAST Updates and how they may affect communication of reductions to counties.