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- 2 - ATTACHMENT "A", Page 9 TORNADOS Situated thirty miles South of Austin at the edge of the foothills about 140 miles from the coast, on the Coastal Plains, we are susceptible to tornados from an alley between Austin and Houston and also tornados which spin off from hurricanes on the coast. We have been the recipient of two ( 2) small tornados in the last five (5) years totaling damages of approximately two ( 2) million dollars. During the Spring months, we are under tornado watches many days and nights each year. HURRICANES In the last five (5) years, being 140 miles from the coast, we have felt the effects of Hurricane Allen, when we put up 6,000 refugees and Hurricane Alicia, 130 refugees. Due to the distance of 140 miles, we experienced winds from the coast of about 60 MPH. However, we experience heavy rains and spin-off tornados from hurricanes in this area. HIGH PRESSURE GAS LINE BLŒ^l OUTS In San Marcos, we have one gas line heading into our City from Staples (4 inch line) to a plant where a small amount is scented and supplies the City, then leaves the City through an eight inch ma1n. We have had a ruptured line on one occasion in the last two years. This system belongs to ENTEX GAS COMPANY and is under 350 PSI. EARTHQUAKES Situated at the edge of the Balcones Fault, there 1S a remote possibility of minor activity. Historically, the only measurable tremors felt in this area were at Pleasanton in February, 1984 which measured 3.6 on the Rictor Scale. AIRCRAFT ACCIDENTS The possibility of an aircraft accident is always present. While the municipal airport does not have much traffic, major airlines do pass over our City both North and South and East and West. CIVIL UNREST Civil unrest is highly improbable. Our major threat would be from demonstrations from University students (18,000 enrolled). Union activity or racial problems in the last five years has been non- existent.