The majority of the quarries surveyed were mapped with a high degree of accuracy as only a low percentage (5 - 15%) of the mapped areas were mis-identified. These areas were subsequently re-classified as other habitat types, including Mixed Shrubland, Shrubby Grassland and Other (Table 6.1q). Boundaries of the three quarries surveyed were slightly different from those indicated on the base map. The boundary of the Anderson Road Quarry was found to be slightly larger than indicated and this is probably due to some areas being worked after the time when the aerial photos/satellite imagery were taken. The Mount Butler Quarry boundary was also slightly different from that indicated. A small area near the quarry edges were occupied by mixed shrubland and lowland forest. The bottom area of the quarry was found to have been used for storage. The Shek O Quarry boundary was also slightly different from that indicated and this is probably due in part to the realignment of the Shek O Road and the restoration of the slopes immediately above and below the new road alignment.