From I-20 and 360

take 360 North Exit Carrier Parkway/Green Oaks Turn right heading
East at the first street light, which is 109th turn Left heading North about a 1/4 mile on the lift side right under the huge Grand Prairie water tower is the Facility, just pass the railroad tracks. 

From 183 and 360

take 360 South Exit Post/Paddock at the Light turn left going over
the bridge heading East to the second street which is 109th Street you will take a right heading South on the right side right under the huge Grand Prairie water tower is the Facility, just before the second set of railroad tracks.