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The information in Table 10 is easier to understand if it is considered in three parts. The first part, lines 1 and 2, represent the HMR 55A local storm PMP values obtained from the PMP Plates includl3d in HrvJR 55A (line 1) and the elevation reduced Plate values prepared by BV. BV requested a site-specific PMP from HMS which utilized both the standard HMH 55A methodology with some consultant interpretation when transposing storms to high elevation sites. Line 3, HMRMVL, represents the site-specific local storm PMP values obtained by HMS using the in-place maximization, and elevation adjustment of the Masonville, CO historic storm following the HMH 55A methodology. Since the Masonville storm study created concern with the storm observations of rainfall, HMS included the maximized and transposed next heaviest storm, the Cheyenne storm, as HMRCYS in Line 4. Finally, HMSPMP refms to the HMS PMP storm calculated using the Convective Storm Methodology operating on the LOGal Storm PMP Atmosphere. The per cent difference in the last line, % Diff, is the difference in the HMSPMP and the HMR-based Masonville local storm PMP values, HMRMVL, for the incremental time periods. Comparing the results suggests that differences between the site-specifiG PMP calculated using the HMR 55A methodology and the HMS Convective Storm Methodologyexist. However, both approaches result in a substantial reduGtion from the PMP values obtained off the HMR ~j5l" PMP Plates. In many ways the site-specific values are more similar than different. Most important, however, is the fact that the general storm PMP values are larger than the loc;al storm values for all time periods. The HMS geneml stolrm is the controllin'9 storm when considering designs for water storage structures. The general storm PMP values are summarized in Table 11 below with tile following meaning for the abbreviations: 55APlate: General storm PMP values obtained off the HMR 55A Plates, HMSAABEM: The site-specific PMP VaIUE!S obtained by HMS in maximizing precipitation in place, transposing, and elevation adjusting the historic Bi9 Elk Meadow storm rainfall using the HMR 55A methodology, HMSSSCOM: The site-specific PMP values obtained by HMS by Gombining the 1-hour Frijole Creek PMP value, the Big Thompson Canyon 6-hour PMP value, and carrying the difference at 6-hours from the Big Elk Meadow values through the rest of the Big Elk Meadow incremental PMP values. HMSCSMPMP: The site-specific PMP computed using the HMS CSrvJ and General Storm PMP Atmosphere methodology. 42