Ridley Park is a borough in Delaware County, Pennsylvania, United States. The population was 7,002 at the 2010 census. Ridley Park is the home of The Boeing Company's CH-47 Chinook helicopter division.[4]
10. Contaminated surface water can eventually enter groundwater and contaminate it. 11. Depending on the type of soil or rock, groundwater will flow at different rates. 12. Rain and snowmelt infiltrate (seep) into the ground to become groundwater. 1. False.
The water flows down a decline into a porous substance such a rock, sand or gravel. Surrounding the porous substance is rock or other material so hard that the water can not escape through it to reach ground level. This combined with the flow of water creates pressure that is only released when in finds it escape.