Joel, I think there are other solutions that perhaps the engineer has not considered. Let’s see what can be done to meet the ordinance and go from there. Thanks, Clay Barnett, P.E. Town Engineer Town of Addison 16801 Westgrove Drive Addison, TX 75001-2818 Office: (972) 450-2857 From: Jenkinson, Joel [mailto:Joel.Jenkinson@wgint.com] Sent: Thursday, October 21, 2010 5:31 PM To: Clay Barnett Cc: Mark Acevedo; Nancy Cline; McIllwain, Frank O.; McAnally, Mitchell, R; joe.mcanally@addisonairport.net Subject: Taxiway Victor Drainage / Million Air Project Clay, The Airport CIP Plan has a drainage improvement project upcoming for Taxiways Victor and Uniform, with engineering set for FY13 and construction in FY14. While the area on the south edge of Million Air’s proposed new ramp is not large, if it would help them with the storm water run-off issue, I can’t see how it would hurt us much to let them direct that run-off along Taxiway Victor where it is already going right now. Granted, it is currently dirt (a bar ditch) and not pavement, but I view that as partly the Airport’s problem anyway. I’m not looking to help Million Air out a lot, but if we can help them out even a little by keeping the run-off that we already have along the north edge of Victor (in the bar ditch) I think that would be fair. I don’t want to take more of the run-off from their ramp than about what we get already from the bar ditch, but if allowing them to direct a little of their run-off down Victor helps them and doesn’t hurt us, I think we ought to let them do that. As we were walking out, Million Air floated the idea (no pun intended) of a detention area along Taxiway Victor downstream of where they will be constructing the new ramp, essentially in one of the two grass islands on the south side of FlexJet’s ramp. I would like to know what the engineers think of this idea, and how it may affect our own taxiway drainage upgrade project. Is this something we could let them do without it causing a big mess that we would have to fix in the FY13-FY14 project? The area south of the FlexJet hangar closest to Taxiway Alpha is pretty close to being a de facto detention area already, and it is way, way out of spec as a safety area right now. Would allowing them to increase its detention capacity cost us more in the long run, is that even something we should consider? Even if it is, in the long run I do NOT want open detention basins along the edge of the taxiways; I’d rather see nicely graded safety areas around drop inlets with RCP for sub-surface storm water run-off. Is it likely that we will have to put in underground detention to accomplish that along Taxiway Victor? Bottom line, if we can help out with their run-off issue without it costing us more to fix later, then it only makes sense for us to offer that help. But if we can’t, then we can’t and it’s Million Air’s problem. Joel Joel Jenkinson Director, Addison Airport main: (972) 392-4850 fax: (972) 788-9334