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EXHIBIT A: EXISTING CHAPTER 927 <br />66Q <br />TABLE 1 <br />STANDARD RAINFALL INTENSITY -DURATION -TABLE <br />DESIGN STORM <br />Tc <br />1 Yr. <br />2 Yr. <br />5 Yr. <br />10 Yr. <br />25 Yr. <br />50 Yr. <br />100 Yr. <br />(mins.) <br />(0.95 <br />(1.20 <br />(1.50 <br />(1.80 <br />(2.00 <br />(2.25 <br />(2.50 <br />in/hr) <br />in/hr) <br />in/hr) <br />in/hr) <br />in/hr) <br />in/hr) <br />in/hr) <br />10 <br />3.15 <br />3.79 <br />4.30 <br />4.95 <br />5.20 <br />5.75 <br />6.15 <br />11 <br />3.02 <br />3.64 <br />4.14 <br />4.78 <br />5.04 <br />5.58 <br />5.98 <br />12 <br />2.91 <br />3.52 <br />4.00 <br />4.63 <br />4.89 <br />5.41 <br />5.81 <br />13 <br />2.81 <br />3.41 <br />3.87 <br />4.48 <br />4.74 <br />5.26 <br />5.65 <br />14 <br />2.71 <br />3.30 <br />3.74 <br />4.34 <br />4.61 <br />5.11 <br />5.51 <br />15 <br />2.62 <br />3.20 <br />3.62 <br />4.21 <br />4.48 <br />4.98 <br />5.37 <br />16 <br />2.54 <br />3.11 <br />3.51 <br />4.09 <br />4.36 <br />4.85 <br />5.23 <br />17 <br />2.46 <br />3.02 <br />3.41 <br />3.98 <br />4.25 <br />4.72 <br />5.11 <br />18 <br />2.38 <br />2.93 <br />3.31 <br />3.87 <br />4.14 <br />4.60 <br />4.99 <br />19 <br />2.30 <br />2.84 <br />3.22 <br />3.76 <br />4.04 <br />4.49 <br />4.87 <br />20 <br />2.22 <br />2.75 <br />3.13 <br />3.67 <br />3.94 <br />4.39 <br />4.76 <br />21 <br />2.14 <br />2.66 <br />3.05 <br />3.57 <br />3.85 <br />4.28 <br />4.65 <br />22 <br />2.06 <br />2.57 <br />2.97 <br />3.49 <br />3.76 <br />4.19 <br />4.55 <br />23 <br />1.99 <br />2.48 <br />2.89 <br />3.40 <br />3.67 <br />4.09 <br />4.46 <br />24 <br />1.92 <br />2.39 <br />2.82 <br />3.32 <br />3.59 <br />4.01 <br />4.37 <br />25 <br />1.85 <br />2.30 <br />2.76 <br />3.25 <br />3.51 <br />3.92 <br />4.28 <br />26 <br />1.78 <br />2.22 <br />2.69 <br />3.17 <br />3.44 <br />3.84 <br />4.19 <br />27 <br />1.71 <br />2.14 <br />2.63 <br />3.10 <br />3.37 <br />3.76 <br />4.11 <br />28 <br />1.64 <br />2.06 <br />2.57 <br />3.04 <br />3.30 <br />3.69 <br />4.03 <br />29 <br />1.57 <br />1.98 <br />2.52 <br />2.97 <br />3.23 <br />3.61 <br />3.96 <br />30 <br />1.50 <br />1.90 <br />2.46 <br />2.91 <br />3.17 <br />3.54 <br />3.88 <br />35 <br />1.37 <br />1.75 <br />2.22 <br />2.64 <br />2.89 <br />3.23 <br />3.56 <br />40 <br />1.25 <br />1.61 <br />2.03 <br />2.41 <br />2.65 <br />2.97 <br />3.28 <br />45 <br />1.13 <br />1.47 <br />1.86 <br />2.22 <br />2.45 <br />2.75 <br />3.04 <br />50 <br />1.07 <br />1.38 <br />1.72 <br />2.06 <br />2.28 <br />2.56 <br />2.84 <br />55 <br />1.01 <br />1.29 <br />1.60 <br />1.92 <br />2.13 <br />2.40 <br />2.66 <br />60 <br />0.95 <br />1.20 <br />1.50 <br />1.80 <br />2.00 <br />2.25 <br />2.50 <br />70 <br />0.86 <br />1.09 <br />1.33 <br />1.60 <br />1.78 <br />2.01 <br />2.23 <br />80 <br />0.78 <br />0.98 <br />1.19 <br />1.43 <br />1.60 <br />1.81 <br />2.02 <br />90 <br />0.70 <br />0.87 <br />1.08 <br />1.30 <br />1.46 <br />1.65 <br />1.84 <br />100 <br />0.65 <br />0.81 <br />0.99 <br />1.19 <br />1.34 <br />1.51 <br />1.70 <br />110 <br />0.61 <br />0.75 <br />0.91 <br />1.10 <br />1.24 <br />1.40 <br />1.57 <br />120 <br />0.57 <br />0.70 <br />0.84 <br />1.02 <br />1.15 <br />1.30 <br />1.46 <br />180 <br />0.43 <br />0.50 <br />0.63 <br />0.75 <br />0.87 <br />0.97 <br />1.07 <br />360 <br />0.25 <br />0.28 <br />0.37 <br />0.43 <br />0.50 <br />0.55 <br />0.62 <br />720 <br />0.16 <br />0.18 <br />0.22 <br />0.25 <br />0.28 <br />0.30 <br />0.36 <br />1440 <br />0.09 <br />0.10 <br />0.12 <br />0.14 <br />0.16 <br />0.18 <br />0.19 <br />