I contacted Rick Luettich (UNC), Casey Dietrich (RENCI UNC), and Bret Webb (University of South Alabama) with regard to an ADCIRC grid which can be used for the ASGS expansion to MS and AL. The preferred grid would be the SL18 grid. However, since the SL18 mesh is nearly identical to SL16 in southeastern Louisiana, Mississippi and Alabama and the improvements in SL18 are all in western Louisiana, from the Atchafalaya River basin to the Texas border we have agreed to go with the SL16 grid.  This grid was used in the oil spill modeling work.