"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: 85 X 145' secondary containment liner with berms comprised of geotextile and polyurea, along with geotextile and polyurea sealed lids for 3 mud mixing tanks located on the containment liner.