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<br /> 33 <br /> Professional Service Industries, Inc. <br /> April 30, 199(1 ,~~~~J1 <br /> .,. V" <br /> .J ~,)) l:;:::t¡)~ }I <br /> M;)~' ~,.~. ""'~, .,., <br /> City of San Marcos ~\~1J..Y 1 1990 <br /> c/o Charles Willis & Associates I~¡,..... <br /> 709-B W. Abram Street Charles Willis & Assoc., lna. <br /> Arlington, TX 76013 <br /> Attention: Mr. Michael Lynn Moore, P.E. <br /> Re: Geotechnical Design Testing <br /> Runway 8-26 <br /> San Marcos Municipal Airport <br /> PSI Proposal No.: 301-310 <br /> I NTRODUCTI ON <br /> As requested on April 30,1990, Professional Service Industries, Inc. <br /> (PSI) is pleased to submit the following proposal for performance of a <br /> subsurface exploration at the site of the referenced project. Preliminary <br /> information provided indicate that Runway 8-26, Taxiway A and a portion <br /> of Runway 17-35 will be re-constructed. <br /> SCOPE OF SERVICES <br /> PSI proposes to explore the subsurface materials, and groundwater <br /> conditions at the site by drilling 10 test borings to a depth of 10 feet <br /> in the asphalt pavement area. The subsurface exploration, and engineering <br /> analysis will include the following services: <br /> 1) drilling and sampling of the materials - 10 borings. <br /> 2) evaluate in-place conditions of the subsurface soil <br /> through field penetration tests. <br /> 3) observe the groundwater seepage at the site. <br /> 4) conduct 1 aboratory tests such as Atterberg limits, <br /> moisture content, two subgrade CBR's and Proctors, two <br /> 1 ime treated CBR's and Proctors and two 1 ime seri es <br /> curves. <br /> 5) backfi 11 i ng of the boreholes with a cement benton ite <br /> grout. <br /> Three Burwood Lane . San Antonio, TX 78216-7071 . Phone: 512/342-9377 <br />