2004-07-02 TDJSMLL - Laserfiche WebLink

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MOORE:Again, Im referring to the flood map for Dr. Allen Takase prepared by Yen Fong. Again, the stream is, again, this is the property here, this red; and theres another piece in red, cause, you know, its symbolic of other color, other things. The stream right now enters the property here. There will be a culvert at this point, the 24-inch culvert. If theres any backup, itll backup into this portion of the floodway. Thats already, again, within the FEMA floodway. The pond in here, a little bit, slow it down. The water will still collect through there and flow. But, again, the requirement is that the location and the speed of that flow doesnt change. But keep in mind the pipeline is at a 1.2 percent of the grade, so its really flat. We cannot increase the speed. Were not picking it up and trying to accelerate the water through there, which would really be a problem. So its going to flow, its going to flow slowly through the pipeline and, again, 1., just a little over one percent grade. And, again, this is the requirements that Public Works has to look at. Yen has to show the calculations, show all of this as part of his drainage study. SPRINGER:Mr. Moore, before you leave, Commissioner Graham, do you have anyfollowupbasedonthemap? GRAHAM:Iwasjustgoingtosay,andyourfillproposalisthatessentiallythat whole parcel fills up so that that low area where we have now where the stream runs through is going to be all filled up to a higher elevation and that the culvert is going to carry water through there? Is that correct? MOORE: Its going to carry water under the fill. GRAHAM:Thank you. SPRINGER:Mr. Moore, so that the discharge point from that culvert thats going to be built under the fill, is that the property line? MOORE:Yes. Again, itll exit where the current stream exits. Again, if you notice from the back there, there were some gravel areas that were devoid of vegetation, where the stream, you can see it running through the adjacent property. That is where it will exit again; and Yens requirement was we cannot increase the amount of water, nor the velocity of the water, at that point. SPRINGER:Thank you. Ms. Black, I was just inquiring of the Corporation Counsel if it was appropriate to invite your additional comments, we saw your hand being raised. BLACK:Its just about the ponding, cause I can tell you where it goes. SPRINGER:Please come to the table and use the microphone. And were looking for new information from you, please. If you need to use the map, Mr. Darrow will help you to a microphone. 24