NTPEP APPROVED - GTX-2013-01-039. US 4800/30 is a woven geotextile made of 100% high-tenacity polypropylene yarns. US 4800/30 resists ultraviolet and biological deterioration, rotting, naturally encountered basics and acids. Polypropylene is stable within a pH range of 2 to 13. US 4800/30 meets the following M.A.R.V. values except where noted. Click here for Product Data Sheet.