"The use of impermeable liners on well pads to contain spills should be a "best practice" used by the entire industry."
Michael Arthur
Co-Director Marcellus Center for Outreach and Research (MCOR)/Geologist Penn State University from Williamsport Sun Gazette 11/18/10
Read article here.

Description: 72,000 SqFt geotextile and polyurea well pad liner with 1,080 linear ft of polyurethane foam and polyurea railroad tie berms.