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ST9301-CS031217T H E C I T Y 0 f COP?ELL December 17, 2003 Mr. Ken Laterza Fort Worth District - Corps of Engineers Regulatory Branch PO. Box 17300 Fort Worth, Texas 76102-0300 RE: Sandy Lake Road (Kimbel Kourt to East City l,imits) ST 93-01 Project Number 200100634 Dear Mr Laterza: On November 28, 2001, I sent the attached letter to you regarding the proposed construction of Sandy Lake Road At the time the letter was sent, construction of the ~oadway improvements was schednled to start in early 2002 Right-of-way acquisition and the design of additional roadway improvements have moved the construction start date to March/April 2004 We intend to construct the project under Nationwide Permit 14, Linear Transportation Projects This letter serves as the preconstruction notification in accordance with General Condition 13 of Nationwide Permit General Conditions The project permittee is the City of Coppell located at 255 Parkway Boulevard, Coppell, Texas 75019 The Engineering Department is responsible for the design and construction of the project and can be contacted at 972-304-3679 2 The location of the proposed project is Sandy Lake Road from Kimbel Kourt to the east City limits The project consists of the reconstruction of the existing 2-lane asphalt roadway to a 4-lane divided roadway with improved drainage and is part of the City's proposed Thoroughfare Plan. There is an existing 4 8'x 10' box culvert with headwalls located at the confluence ora drainage channel with Denton Creek The channel and box culvert were constructed in I981 as part of the Woodridge Subdivision storm water i~nprove~nents The culvert is at a 43© left fo~wvard skew and is 95 feet long There is existing concrete riprap slope protection at all four corners of the headwalls. The existing four-barrel box culvert will be removed and a new 4 8'x 10' box culvezt at a 43© left lbrward skew, 165 feet long will be constructed in the same location Retaining walls are being constructed on both sides of the roadway right-of- way lines to minimize impact to the existing creek and channel banks. The existing box culvert currently impacts 0 10 acres of the US. The new structure will increase that impact by 008 acres for a total impact of 0.18 acres to waters of the US 4 The project is being constructed within the confines of the existing drainage channel and does not impact any special aquatic areas. 5 An archaeological survey was performed for the project and approved by the Texas Historical Commission. The existing drainage channel has concrete slope protection on both sides of' the channel on the east and west sides of the existing box culvert. The proposed box culvert will be constructed in areas previously covered by concrete slope protection and headwalls. The proposed slope protection wilt tie into existing slope protection in three locations The southeast corner is the only area that will be newly impacted by the proposed improvements The City owns the property on the southeast side of the proposed improvements and has a drainage easement along the channel if it is determined that any compensatory mitigation is required. The proposed box culvert will be constructed in two phases, which will minimize any temporary losses to waters of the US. Exhibits and photographs are enclosed to help in making a determination with regards to NWP 14 Please contact me at 972-304-7019 if you have any questions or need any additional information. Suza~flaylor CIP i2oordinator Engineering Department Enclosures