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rs ... <br />J. <br />July 5, 2011 <br />Klotz Associates <br />1160 Diary Ashford, Suite 500 <br />Houston, Texas 77079 <br />Attn: Mr. Gary Struzick, P.E., CFM <br />Phone: 281-589-7257 <br />Email: Gary.Struzick @Klotz.com <br />Re: Cost Estimate for Geotechnical Engineering Services <br />Drainage Ditch Improvements <br />Battleground Estates Subdivision <br />Ira Porte, Texas <br />Terracon Document No, P91110112 <br />Dear Mr. Struzick: <br />Terracon Consultants, Inc. (Terracon) understands that we have been selected based on <br />qualifications to provide Geotechnical Engineering Services for the above referenced project. This <br />document outlines our understanding of the scope of services to be performed by Terracon for this <br />project and provides an estimate of the cost of our services. <br />A. PROJECT INFORMATION <br />Plans are to improve approximately 3,800 linear feet of drainage ditch along an existing Harris <br />County Flood Control Easement within Battleground Estates Subdivision in La Porte, Texas. As part <br />of the improvement program, the existing drainage ditch is planned to be widened. We understand <br />the proposed drainage channel depth will be approximately 8 feet, with sideslopes no steeper than <br />4 horizontal to 1 vertical (41-1:1V). We understand that the drainage ditch will be maintained by Harris <br />County Flood Control District (HCFCD). Therefore, our Geotechnical Engineering Services will be <br />performed based on HCFCD criteria. <br />In addition, roadside ditches are also planned to be reconstructed along Bois D'Arc Drive. We <br />understand that the maximum depths of the proposed roadside ditches are planned to be 5 feet, with <br />sideslopes no steeper than 3H:1V. <br />We understand the drainage ditch has pipeline crossings, and as requested we plan to utilize a Photo <br />Ionization Detector (PID) to scan the soil samples collected during our field prograrn to determine the <br />general level of volatile organic compound (VOC) vapors present within the subgrade to provide <br />preliminary identification of potential VOC contamination. Where elevated levels of VOC's or some <br />other form of contamination is detected, the client will be notified. <br />Terracon Consultants, Inc, 551 Link Read, Suite F League City, Texas 77573 <br />P [2811 557 2900 F [2811 557 2990 terracon.com <br />