Please follow http://share.inside.nps.gov/sites/mwrgis/_layouts/WordViewer.aspx?id=/sites/mwrgis/Shared%20Documents/NPS_LayerNamingConventions_20120419.docx&Source=http%3A%2F%2Fshare%2Einside%2Enps%2Egov%2Fsites%2Fmwrgis%2FSitePages%2FHome%2Easpx&DefaultItemOpen=1.