"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: 36' x 85' 12 gauge steel 36 inch high secondary containment barrier wall with 32 secured custom manufactured steel feet. The barrier wall contains a custom colored geotextile and spray polyurea containment liner, with 4 - A.S.S. customer polyurethane foam and polyurea 12.5' tank bases.