Richie,
Supposedly, the only track condition is "Fast."
"Polytrack is a combination of conventional and synthetic materials. Its unique formula is comprised of polypropylene fibers, recycled rubber and silica sand covered in a wax coating."
If you click this link it will take you to the Polytrack site.
http://www.polytrack.com/racingmenu.html
And here's a quote from the Turfway Park website.
“Other tracks are watching Turfway intently,” said Turfway Park president Robert Elliston, “and many are seriously interested in using this system. Turfway Park is on the cutting edge of racetrack technology.” Polytrack has been installed on a few training tracks in this country, but Turfway is the first facility in North America to use the system for racing.