"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: 12 Gauge Secondary Containment Steel Wall Systems using environmentally friendly, seamless geotextile and spray polyurea liners. Our 12.5' diameter foam | Polyurea Tank Bases have also been utilized in certain circumstances.