Applications for development that were received, reviewed, and approved by the Allegheny County Conservation District (ACCD). Application types consist of Chapter 102 National Pollutant Discharge Elimination System (NPDES) permits, E&S plan reviews for sites not needing an NPDES permit, Erosion and Sediment Control General Permits (ESCGPs) for projects associated with oil and gas, and applications for earth disturbance associated with Chapter 105 General Permits issued by ACCD. Features were digitized using paper plans and/or digital plans, where available, and are represented as permit boundaries and limits of disturbance for permits and non-permits, respectively. Includes plan identification numbers, application dates, land use type, municipalities, site acreage, pre-construction impervious acreage, post-construction impervious acreage, number of discharge points, and whether or not the project uses non-structural stormwater control measures to treat at least 25% of the total stormwater volume.