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lf erracon <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 /> La 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 (4H:1 V). 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 program 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 Road, Suite F League City, Texas 77573 <br /> P [281] 557 2900 F [281] 557 2990 terracon.com <br /> Geotechnical ■ Environmental ■ Construction Materials ■ Facilities <br />