Included in this appropriation is funding for the major modification, upgrade, or rehabilitation of dams owned or maintained by the Department of Conservation of Recreation and the Virginia Soil and Water Conservation Districts to bring impounding structures into compliance with dam safety requirements promulgated by the Virginia Soil and Water Conservation Board, pursuant to § 10.1-605, Code of Virginia.  Major modifications, upgrades, and renovations include, but are not limited to, engineering and dam break inundation zone mapping and incremental damage analysis, widening of the existing emergency spillways, adding new emergency spillways, increasing the storage volume for impounded water, providing overtopping protection for the entire dam, concrete rehabilitation and repair, pressure grouting, riser tower replacement and repair, outfall pipe sleeving, concrete joint sealing, gate replacement, toe drain construction, installation of monitoring wells, embankment stabilization, rip rap replacement or tree removal.