Site is located approx. 20 m from SW corner of park road bridge that crosses Chalone Creek. GPS point is an offset & GPS unit was reset to read only 3 satellites. Metal cable at base of oak near center of plot (can be seen in photo #5015, "574w"). Park road is at SE corner of plot. Bridge is very near plot and had been rebuilt after 1998 flood. Bench Trail runs along NE side at base of slope. GPS point bad, manually moved from 4039582n 663921e. Elevation taken from map. Plot is in a stand of Quercus agrifolia, which is adjacent to Chalone Creek. Plot dimensions reflect the linear nature of the stand. The long axis of the rectangle is perpedicular to the aspect. Stand continues alongside creek beyond area of the plot. The substrate is a gravel of volcanic origin, covered in leaf litter. Animal trail in plot.