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Lutzky Associates Development, LP - Geolechnical investigation <br />MACTEC Project 4953-03-2631 <br />Seplember 18.2003 <br />Table 3 <br />List Of Historic Earthquakes Of Magnitude 4.0 Or <br />Greater Within 100 Km Of The Site <br />(NOAA/CDMG DATA 1812-1905) <br />COMPUTATION OF DESIGN <br />CONSTANT AREA <br />MAGNITUDE <br />TABLE OF DESIGN MAGNITUDES <br />RISK RETURN PERIOD (YEARS)DESIGN MAGNITUDE <br />DESIGN LIFE (YEARS) <br />25 50 75 100 25 50 75 100 <br />.01 ..2487 4974 7462 9949 .. 8.24 8.35 8.40 8.43 <br />.05 ..487 974 1462 1949 .. 7.73 7.98 8.11 8.18 <br />.10 ..237 474 711 949 .. 7.43 7.72 7.88 7.98 <br />.20 ..112 224 336 448 .. 7.09 7.41 7.58 7.70 <br />.30 ..70 140 210 280 .. 6.86 7.19 7.38 7.50 <br />.50 ..36 72 108 144 .. 6.54 6.88 7.07 7.21 <br />.70 ..20 41 62 83 .. 6.27 6.61 6.81 6.95 <br />.90 ..10 21 32 43 ..5.95 6.29 6.49 6.63 <br />MMIN =4.00 MMAX = 8.50 <br />MU =4.48 BETA = 2.001 <br />MACTEC Engineering and Consulting