The influence of surfaces and interfaces on the dynamical properties of polymers has been a very active area in recent years. The recently developed low energy muon (LEM) technique has emerged as a valuable method for profiling the depth dependence of the dynamical properties of a polymer film and we have observed clear changes in the local glass transition temperature near polymer surfaces using this technique. Following the initial CRISP proposal, some polybutadiene data was obtained and at 150K showed a layer near the surface with strongly reduced density, which corresponds well to size of the region of enhanced dynamics seen in the parallel LEM study of the same sample. This extra layer is not present in data taken at 100K and 200K. This continuation proposal requests further beamtime to make a detailed investigation of the temperature dependence of the size of this layer