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I I I -I I I I I I I- I I I I I I I I I The following table shows the probabilities of the last freezing temperatures in the Spring and the , frrst in the Pall (from Soil Survey of Larimer County Area, Colorado, by U.S.D.A./SCS et. al.). The data is for Port Collins. The information for the following tables are from the Soil Conservation Service "Soil Survey of Larimer County, Colorado". Minimum Temperature Probabilities Minimum TemDerature Probability 240P or lower 320P or lower 280P or lower Spring: 1 yr. in 10 later than 2 yrs. in 10 later than 5 yrs. in 10 later than Probable Last Day of Occurance Apr. 28 May 9 May 20 Apr. 23 May 5 May 16 Apr. 14 Apr. 26 May 8 Pall: 1 yr. in 10 earlier than 2 yrs. in 10 earlier than 5 yrs. in 10 earlier than Probable First Day of Occurance Oct. 6 Sept. 24 Sept. 17 Oct. 11 Sept. 30 Sept. 22 Oct. 21 Oct. 10 Oct. 1 (Example: Records show a probability that in lout of 10 years a minimum temperature of 240P or lower will be recorded on or after April 28) The following table shows length of growing season in Port Collins (from the same source as above). Growing Season Length Probabilities Probability Higher than 240P Higher than 320P Higher than 280P 9 years in 10 8 years in 10 5 years in 10 2 years in 10 1 year in 10 169 176 189 203 210 148 154 166 177 183 125 132 145 158 165 (Example: Records show a probability that in 9 out of 10 years the interval between minimum temperature recordings, the growing season, of 240P is at least 169 days.) The area is subject to occasional windstorms, hailstorms, and thunderstorms generally typical of the east slope foothills area. These are not considered to be a problem for the subject project. PAGE3.Cbapla-1