Note that more than one dispersant staging site can be specified in a vessel plan. The
COTP zone could be divided into areas for each staging site. See the following example
for two possible staging sites, the Mendocino County Airport and the Half Moon Bay
Airport. If the Mendocino County Airport was the only staging site specified in the plan,
the EDAC Transit Distance would be 124 NM. The EDAC Transit Distance for Half
Moon Bay would be 131 NM if it were the only staging site specified in the plan.
However, if both airports were specified as staging sites in the plan, the COTP zone
could be divided into two areas by a line equidistant from the two airports. The diagram
shows the San Francisco COTP zone with a dispersant staging site at the Mendocino
County Airport for the northern area of the COTP zone with a EDAC Transit Distance of
85 nautical miles and a dispersant staging site at the Half Moon Bay Airport for the
southern area of the COTP zone with a EDAC Transit Distance of 72 nautical miles.