Here's some of the important bits:
PROJECTION["Transverse_Mercator"],
PARAMETER["False_Easting",328083.3333333333],
PARAMETER["False_Northing",820208.3333333333],
PARAMETER["Central_Meridian",-85.66666666666667],
PARAMETER["Scale_Factor",0.9999666666666667],
PARAMETER["Latitude_Of_Origin",37.5],
UNIT["Foot_US",0.30480060960121924]
One thing to watch out for is that this definition is US survey foot-based. The false easting and northing parameters are also in US survey feet. When you implement the projection, the units are set by the unit of the semimajor axis of the ellipsoid (spheroid) so you'll need to convert it to US feet, or convert the results to US feet before adding the false easting and northing values.
Melita