ProposedPriorityAnnexationAreas_COSA 2014 study Proposed priority annexation areas based on the City of San Antonio’s 2014 study. Click here https://therivardreport.com/wp-content/uploads/2015/08/proposedpriorityannexationareas_cosa-aug-2015.pdf to download full size PDF. Proposed priority annexation areas based on the City of San Antonio’s 2014 study.