... methods of exploration, such as SPT, CPT, etc. to establishstratification of the subsurface materials, the profile of the top of bedrock and bedrock quality, depth togroundwater, limits of types of ... right of way restrictions,proximity of adjacent structures, andschedule constraints Identify areas of geologic concern on the siteand potential variability of local geology Identify areas of ... be located below thedepth of frost potential. Depth of frost potentialshall be determined on the basis of local orConsideration may be given to over-excavation of frost susceptible material...