Lancaster's Integrated Green Infrastructure Plan--Analyzing a Decade of Implementation and Planning for the Next

The City of Lancaster, Pennsylvania comprises approximately 7.4 square miles with an estimated population of 60,000. As with many historic urban town centers, the City is highly impervious and approximately 50% of the City is served by combined sewers. During wet weather events combined sewage flows exceed the capacity of the Advanced Wastewater Treatment Plant and combined sewage is discharged directly to the Conestoga River. This paper will provide an overview of the City's progress over the last 10 years, summarize the planning analyses completed as part of the 2019 GI plan update, and highlight some of the current large-scale GI efforts that are underway including constructed stormwater wetlands in a large park, one-way to two-way street conversions with extensive GI, and a significant streetscape project to improve pedestrian and bicycle access from the city center to the Amtrak train station.