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I I ,I I I I I I ,I I I I I I I I 1 I -I * Condition 2, loo-year South Boulder Creek floodplain with a FEMA certified flood levee in place on the southern and eastern property. Both Condition I and Condition 2 hydraulic models will be based upon the current Property reclamation grading plans. C. Prepare a report documenting the findings and floodplain delineations of the impacts ofthe South Boulder Creek floodplain on the Flatiron Property, PREVIOUS FLOOD STUDIES ON SOUTH BOULDER CREEK In order to analyze the floodplain conditions at the Property, Love & Associates reviewed several previously documented floodplain studies of South Boulder Creek, Following is a brief history of these earlier studies along with information pertaining to each study's findings, The earliest study obtained for South Boulder Creek was prepared in August, 1969, by the V,S, Army Corps of Engineers (Corps) entitled Floodplain Information Report for South Boulder Creek. This report published the results of a floodplain analysis for the Intermediate Regional Flood, approximately the lOO-year flood based upon a flood discharge of S,OOO cubic feet per second (cfs) and the Standard Project Flood (approximately Soo-year flood) of 9,400 cfs on South Boulder Creek, Flood profiles were developed from surveyed cross sections and the floodplain was delineated on V.S.G,S, 7 1/2 minute topographic maps with contour intervals of 10 to 40 feet. The floodplain generated during this analysis did not accurately trace the waters resulting from the flow split of South Boulder Creek which leaves the creek's floodplain and spills to the north and east of the Flatiron Property, The next documented floodplain analysis and master plan for South Boulder Creek was undertaken in December 1973, by R. W. Beck and Associates under a contract with the -3- - .;.~"