The Pennwalt Brine Field referred to an open area in Riverview just north of Pennsalt Park and bounded by Pennsylvania Road, Colvin Street and Electric Street that was heavily used by the Pennwalt Corporation. This area was originally intended for Castle and Ford's Riverview Subdivision, but it was never developed. In fact, if one investigates the area in person from a fencing surrounding the field or even through aerial imagery, one can still see clearings for a street grid and several fire hydrants.