Clay: Here are the drainage calculations that we performed as part of the PER for the Airport. We decided that traditional nomograph calculations would be more appropriate and, slightly more conservative, than H&H modeling on these small drainage areas. Please let me or Tim know if you have any questions. Frank McIllwain, PE Senior Project Manager Office: 972-377-7480 Ext: 222 Mobile: 214-250-3967 E-mail: FOMcIllwain@GarverUSA.com