Most of the lines in this cover originated from ALP lines that were imported in the summer of 1997 from BJ in the Regional Office. The ALP lines were an interim product - they were not nor are they now released. Additionally there are a few lines that came from cff lines. There was a significant difference in line interpretation between the lines from cff and the lines in the ALP cover, and in most cases the ALP lines were used, however, when the cff lines were more appropriate they were used. This determination was made by comparing the forest boundary in use at the time with both sets of lines - ALP and cff.