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LJA Engineering, Inc. <br /> 11821 East Freeway Phone 713,450.1300 114 <br /> Suite400 Fax 713.450.1385 <br /> Houston, Texas 77029 www.ijaengineering.com <br /> July 5, 2011 <br /> Mr. Gary Struzick, PE, CFM <br /> Vice President <br /> Klotz Associates <br /> 1160 Dairy Ashford, Suite 500 <br /> Houston, Texas 77079 <br /> Re: Engineering Services for Topographic Surveying <br /> for HCFCD Ditch F101 and Bois D Arc Drive <br /> Proposal 11 -0513 <br /> Dear Mr. Struzick: <br /> LJA Engineering, Inc. (LJA) is pleased to present this assignment letter for furnishing <br /> engineering services for a topographic survey along HCFCD F101 and Bois D Arc Drive. This <br /> scope of work will include the following: <br /> • Establish horizontal and vertical control. Vertical control will be based on TSARP <br /> monuments. <br /> • Cross- sections at 15 locations of the existing F101 drainage channel from top of bank to <br /> top of bank, at the intersection of F101 and North P Street provide detail survey of <br /> existing culvert structure (approximately 6 culverts), provide topographic information on <br /> existing culverts along F101 (3 locations), and provide topographic information of <br /> exposed pipelines (1 location). <br /> • Cross - sections at 5 locations along Bois D Arc Drive to include roadway and both <br /> existing roadside ditches up to their outer top of banks, provide topographic information <br /> on driveway culverts along Bois D Arc Drive (approximately 50 locations), and provide <br /> slab elevations of 20 existing structures along Bois D Arc Drive (10 locations will be . <br /> provided by Klotz and 10 will be selected by the surveys). <br /> • Maintain photograph log of each structure and locations of the cross - sections surveyed. <br /> The fee for this effort will be a lump sum fee in the amount of $15,500 in accordance with the <br /> attached Professional Services Agreement. <br /> 1, <br /> to, • <br />