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Docusign Envelope ID: BB27E2CA-90E7-44DF-ACD6-60284C2E92F6 <br /> 206 W Rhapsody <br /> im San Antonio,Texas 78216 <br /> 512.447.9081 Ph;512.443.3442 Fax <br /> www.hvj.com <br /> A�ISO CIAT �S <br /> August 13,2024 <br /> Mr.Jaime R. Kypuros,Jr.,PE <br /> Tetra Tech, Inc. <br /> 711 Navarro St, Suite 560 <br /> San Antonio,Texas 78205 <br /> Re: City of San Marcos Wallace Subdivision <br /> Geotechnical Site Investigation <br /> Owner: City of San Marcos <br /> HVJSCTx Proposal No. SGT 24 1041 <br /> Dear Mr. Kypuros, <br /> HVJ South Central Texas,M&J Inc. (HVJSCTx) is pleased to submit this proposal to provide <br /> geotechnical investigation and pavement design services for the above referenced project. <br /> Our scope work, as outlined in this proposal, provides the necessary and appropriate level of <br /> geotechnical engineering support during the design phase of the project. <br /> Project Description <br /> We understand that Tetra Tech,Inc. (Tetra Tech) is assisting the City of San Marcos with the <br /> Wallace Subdivision street,water and sewer improvements. As a part of the project,water/sewer <br /> line installation and pavement reconstruction/rehabilitation will be performed along Staples,Juarez, <br /> Monterey,Luciano Flores, Durango, Saltilo, Laredo, and Tampico streets. Approximate lengths of <br /> water and sewer lines are 13,700 LF water and 9,860 LF,respective. <br /> The proposed diameter of water and sewer lines will range from 8 to 12-inches. A minimum cover <br /> depth of 5 to 10 feet is anticipated. We assumed open cut method for water and sewer line <br /> installations. <br /> Geotechnical Scope of Work <br /> For this project,HVJSCTx will conduct the following: <br /> • Subsurface Exploration: To investigate subsurface conditions and characterize soil at the <br /> project area,geotechnical borings will be drilled. A total of eight (8) borings are proposed. <br /> Each boring will be drilled to a depth of 20 feet each; totaling 160 lineal feet. <br /> Based on the project location and its expected geology, fill over clay/granular soil deposits <br /> are anticipated at this site. However,if different soil conditions are encountered during <br /> drilling activities, the boring depths may be adjusted. <br /> The borings will be completed with a truck-mounted rig, equipped with flight augers and <br /> sampling tools. Soil samples will be collected using Shelby tubes and/or split-spoon <br /> samplers. Soil sampling will be performed continuously to a depth of 10 feet and at 5-ft. <br /> interval thereafter. Field-testing of soil samples will include pocket penetrometer readings in <br /> Office operated by HVJ South Central Texas—M&J,Inc.,a proud independently owned and operated HVJ Associates'franchisee <br />