CMAQ-STM Git repository for CMAQ 5.2.1?

Good morning CMAQ users and developers:
I am looking for the sulfur tracking model, while it seems that the download link in this following website does not work. Does anyone have the link to the repository for CMAQ-STM. It will be awesome if CMAQ-STM for version 5.2.1 of CMAQ is available.


Thank you for your interest in CMAQ-STM. The sulfur tracking model is not available with v5.2 or v5.2.1. However it is being updated as part of v5.3 and will be released with the new model version in Spring 2019.