What You Should Know Before You Sign a Lease:
You should seriously consider consulting an attorney knowledgeable in this particular area of law as well as your mortgage lender and homeowner's insurance carrier as your decision to sign may affect your ability to refinance, sell, or be covered for any damages related to drilling.
Pennsylvania does not currently have automatic forced pooling (the act of being forced by state law into participation in an oil and/or gas producing unit) and it is very difficult, and impossible in many circumstances, for companies to use this controversial legal tool to gain access to minerals beneath your property. The promise of income for your family for generations is often exaggerated and there are hidden fees, taxes, deductions etc.
For a list of questions to ask the "Landman" before signing a lease: http://media.wix.com/ugd/76a400_31ba4c75821d4fff9f74d87476e62748.pdf
Other concerns associated with unconventional gas development
Nuisance: Fracking is a heavy industrial process. Each well requires thousands of truck trips and results in significant noise. Drilling operations continue 24 hours a day, 7 days a week and require substantial lighting and produces tons of waste.
Fire & Explosions: There is always the potential for fire and explosions with the nature of natural gas production and the evacuation area on an unconventional gas well is typically a 1/2 mile radius from the well
Water & Air Pollution: According to the DEP, in 2014 more than 240 private water supplies were said to have been damaged by oil and gas operations during the past seven years. Streams and tributaries are also at risk from contamination due to spills or regurgitation of flow back from slick water hydraulic fracturing. Residents living less than 1⁄2 mile from wells are at greater risk for health effects from exposure to air pollutants during well completion activities due to exposure to toxic chemicals released during the process.
Property Value Depreciation: All of the above concerns are issues that can affect property values. Property values will also be affected by whether or not the mineral rights have been severed from the surface rights, whether the mineral rights can be or are leased to an oil & gas company, and problems obtaining mortgages and insurance coverage.
Hear it first hand from a farmer who has been through it all: https://youtu.be/ffsF-rNla5Y