TY - RPRT TI - Hydrologic investigations and a preliminary conceptual model of the groundwater system at North Penn Area 1 Superfund Site, Souderton, Montgomery County, Pennsylvania AU - Lisa A. Senior AU - Dennis W. Risser AU - Daniel J. Goode AU - Philip H. Bird PY - 2024 DO - 10.3133/ofr20241080 UR - https://pubs.usgs.gov/publication/ofr20241080 ID - ofr20241080 ER -