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1 <br />1 <br />1 <br />1 <br />1 <br />CLIMATE <br />TS80161 <br />EXHIBIT K <br />Climate for the region is mild and semi-arid. Average annual precipitation at the Rocky <br />Flats Pls.nt site, located about 2 1 f 4 miles southeast of the quarry site, is approximately <br />15 inches: (U.S. Department of Energy, 1980). <br />The 100-year, 24-hour maximum precipitation event for the area is estimated at 5.1 <br />inches of rainfall (NOAA, 1973). The 100-year maximum intensity (thunderstorm) event <br />is estimated to produce b.5 inches per hour for 12 minutes, or 1.3 inches total rainfall <br />(NOAH, 1973). <br />Climatology data recorded at Boulder, Colorado, about 6 lf2 miles north of the site, <br />indicate :~ monthly mean temperature of 52.6 degrees Fahrenheit. Monthly precipitation <br />records fr1r this station are given in Table K.1. <br />-39- <br />