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~ 1.4 ~ <PBRM'.Iaf PaDI:ASTS* (nOOO) Year LOCAL ITINERANT 'ro'17\L 1985 42.0 28.0 70.0 1986 43.7 29.1 72.7 1987 45.3 30.2 75.5 1988 47.0 31.3 78.3 1989 48.7 32.4 81.1 1990 51.1 34.1 85.2 1995 66.5 44.3 110.8 2000 90.3 60.1 150.3 2005 131.9 87.8 219.6 DIIilv aDd Bcur~y Activity Jm~ Anticipated levels of aircraft activity at San Marcos do not appear to be sufficient to create peakinq or serious oonqestion durin9 busy time periods. However, it is the oonsultant's judgment that comprehensive planninq should cxmsider traffic characteristics during bUsy periods, particularly in regard to itinerant activity. Iti~ anl 'l'Qffic Figure 1.4 shows estimated hourly percentages for itinerant activity and is based primarily upon studies at San Marcos and other similar airports in central Texas. The daily peak occurs in late afternoon (amund 5:00 p.m.), with traffic being relatively constant during the other afternoon hours. After 5:00 p.m., traffic generally falls off rapidly. Generally, activity attributed to itinerant traffic will ooi.ncide with the beginning and end of the business day. Ia:II]:..I.~~ al Av:iat:ia1 Traffic At San Marcos, local traffic is anticipated to constitute approximately 60 percent of total aircraft activity. Over the twenty year planninq period, this proportion is consistent with most general aviation airports in the southwest. Wi th the introduction of the improvements in airport facilities, however, and specific navigation aids, the proportion may change as a result of increases in flight t:raini.nq at San Marcos. '!be airports location relative to San Antonio and Austin will provide a convenient location for owners to store and maintain aircraft. But at the same time, the airport is far enough away from the larger metropolitan airports and their congested airspace to provide convenient and relatively uncongested airspace for t:raini.nq and other types of local flying. 1.9