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CITY OF LATHROP <br /> 2 TECHNICAL PROVISIONS <br /> 2.1 GENERAL REQUIREMENTS <br /> 2.1.1 SCOPE OF WORK <br /> A. Purpose <br /> A triple completion test well/monitoring well will be constructed for The City of Lathrop <br /> (City). The test hole shall serve to evaluate the lithologic character of subsurface <br /> formations and aquifers at the candidate well site and to determine characteristics of the <br /> aquifer materials through geophysical surveys and measurements. The monitoring well <br /> will be used to sample ground water and measure water levels at selected depth horizons. <br /> The test hole shall be converted to a multiple completion monitoring well with up to <br /> three,2-inch diameter piezometers. Piezometers shall be constructed of Schedule 40 PVC <br /> casing and screen. <br /> B. Test Hole Drilling and Monitoring Well Construction <br /> 1. The Work to be completed under this Contract will consist of furnishing all materials, <br /> labor, equipment, fuel, tools, transportation and services for the drilling, sampling and <br /> logging of a test hole at the selected site. The test hole shall be converted to a permanent <br /> monitoring well. Up to three individual piezometers may be installed in the reamed <br /> borehole. In the event that the City does not elect to convert the test hole to a monitoring <br /> well,the test hole shall be destroyed in the manner specified herein. <br /> 2.The project site is located in San Joaquin County, CA. <br /> 3. The test hole shall be drilled to a depth of 800 feet bgs. The actual depth of the test <br /> hole will depend on the lithology encountered. A driller's log will be prepared to define <br /> the lithology encountered during construction, drill cuttings of the formations <br /> encountered will be collected, and the test hole will be logged with electric geophysical <br /> logging equipment. <br /> 4.The minimum diameter of the test hole is 8%-inches.The contractor may drill a larger <br /> diameter test hole at his own expense. <br /> 5. The final design for the monitoring well will be prepared by the Engineer after <br /> evaluating the test hole data. <br /> 6.Test how shall be reamed to a minimum diameter of 12 1/4 inches.The contractor may <br /> drill a larger diameter test hole at his own expense. <br /> 6.Cuttings,drilling fluids,and development water shall be contained.The Contractor shall <br /> dispose of cuttings and fluids offsite. <br /> LUHDORFF&SCALMANINI <br /> CONSULTING ENGINEERS 5 <br />