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LJA Engineering, Inc. <br />11821 East Freeway Phone 713.450.1340 <br />Suite 400 Fax 713.450.1385 <br />Houston, Taxes 77029 vmY.Uaenglneering.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 1=101 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 forth 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 Are Drive (10 locations will be . <br />provided by Klotz and 10 will be selected by the surveys). <br />0 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 />'i <br />w <br />