gas accumulation / septic systems / sand mound systems / /
NaturalFeature
Deep Creek / Lehigh / Perkiomen Valley / Ridge Valley Creek / Upper Perkiomen Creek / Unami Creek / Upper Perkiomen Valley / Triassic Lowlands / Unami Creek Valleys / Deep Creek valleys / Perkiomen Creek / Macoby Creek / /
Organization
Philadelphia PA / Miles Pennsylvania Environmental Council / Environmental Protection Agency / /
Position
major Philadelphia streets / King Road / /
ProvinceOrState
Berks County / Pennsylvania / Triassic Lowland Province / Montgomery County / Lehigh County / Brecknock / /