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Riverview Estates-CS 921124The City With A Beautiful Future P.O. Box 478 Coppell, Texas 75019 214-462-0022 November 24, 1992 Mr. Johnny Thompson 1850 South Belt Line Road Coppell, TX 75019 Property on Sandy Lake Road (Approximately 25 Acres) Dear Mr. Thompson: This letter is written in response to your recent inquiries of the Engineering Department concerning the filling of your property on the south side of Sandy Lake Road west of the Elm Fork of the Trinity River. Most recently you and I discussed the filling of the property on November 12, 1992. During that conversation, I explained that based upon the review of all previous correspondence and FEMA requirements, it was my opinion that you did not have a valid permit from the City to fill your property and that you would need to go through the Floodplain Development Permit process. In reviewing the information, it appeared that in 1983 you were proceeding on the proper course of action to obtain a Letter of Map Amendment (LOMA). However, as I explained, once a map is updated, the new map supersedes all LOMA's. Because you never filled your property and because the floodplain maps were updated, your LOMA from 1983 has been superseded, and you will need to proceed with the proper process of obtaining permission to fill the property. Because this property is now shown to be in a floodplain, based on an increase in the floodplain elevation (1983 elevation - 443, 1992 elevation -445), you will need to obtain a Letter of Map Revision (LOMR). The LOMR will require a Floodplain Study to show the impact of filling the property on the water surface. I explained to you that it could be anywhere from three to six months after the study is approved by the City before a Conditional Letter of Map Revision is obtained from ' FEMA. During the course of our conversation you seemed to understand that your LOMA was no longer valid and that you would need a Letter of Map Revision to fill. I understand that you have had some preliminary conversations with a local consultant about a flood study on your property. Letter to Mr. Johnny Thompson November 24, 1992 Page 2 In regards to some of your concerns, I did explain that if a flood study was submitted, approved and met all our requirements, then the flood study would be processed to FEMA for approval, as would any other flood study within the City limits of Coppell. I also explained that there is currently a coalition of nine cities being formed that would monitor all development along the Elm Fork of the Trinity River in conjunction with the Trinity River Corridor with the North Texas Council of Governments. When that coalition becomes active, there quite possibly could be additional restrictions and requirements placed on the development of property in the drainage basin of the Elm Fork of the Trinity River. One of those requirements could be valley storage. As stated during our meeting, valley storage is not currently a requirement of the City of Coppell but a recommendation. You stated that you were currently in the process of looking at how to develop the 25 acres and that you had spoken with the engineer for the Eagle Point development to the south. It is my understanding that you will be splitting your drainage and taking approximately half of it to the south and half to Sandy Lake Road. I did inform you that a contract for the design of Sandy Lake Road had recently been let by Dallas County. The engineer is Svererup Corporation and the project manager is Phillip Westin, P.E. The address for Svererup Corporation is 4311 Oak Lawn, Suite 300, Dallas, TX 75219 and their phone number is (214) 520-2116. It is my recommendation that you contact Mr. Westin to inquire about their design for the drainage from this property. In conclusion, because you do not have a valid fill permit, all filling of the property should cease. To continue to fill the property could subject you to citations from the City for violation of our Floodplain Ordinance. If you should have any questions concerning any items contained in this letter, please feel free to contact me at your convenience. Sincerely, Kenneth M. Griffin, P.E. City Engineer KMG/bd Alan D. Ratliff, City Manager Larry Jackson, City Attorney