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I <br /> SECTION 31 23 19 - DEWATERING <br /> PART 1 GENERAL <br /> 1.1 SUMMARY <br /> A. This Section includes temporary dewatering and surface water control systems for open <br /> excavations and utility trenches. <br /> B. Section includes: <br /> 1 1. Dewatering systems. <br /> 2. Surface water control systems. <br /> 3. System operation and maintenance. <br /> 4. Water disposal. <br /> 1.2 SUBMITTALS <br /> A. Dewatering Plan: <br /> 1. Descriptions of proposed groundwater and surface water control facilities including, but <br /> ' not limited to, equipment; methods; standby equipment and power supply; pollution <br /> control facilities; discharge locations to be utilized; and provisions for immediate <br /> temporary water supply as required by this Section. <br /> 2. Plan to be reviewed by the Engineer prior to the beginning of construction activities <br /> requiring dewatering. Review by the Engineer of the design shall not be construed as a <br /> detailed analysis of the adequacy of the dewatering system,nor shall any provisions of the <br /> above requirements be construed as relieving the Contractor of its overall responsibility <br /> and liability for the work. <br /> 1.3 DEFINITIONS <br /> • <br /> A. Dewatering includes the following: <br /> 1. Lowering of ground water table and intercepting horizontal water seepage to prevent <br /> ground water from entering excavations,trenches,tunnels, and/or shafts. <br /> 2. Reducing piezometric pressure within strata to prevent failure or heaving of excavations, <br /> trenches,tunnels, and/or shafts. <br /> 3. Disposing of removed water. <br /> B. Surface Water Control: Removal of surface water within open excavations. <br /> 1.4 QUALITY CONTROL <br /> A. All dewatering operations shall be adequate to assure the integrity of the finished project and <br /> shall be the responsibility of the Contractor. <br /> I <br /> Legion Golf Course Stormwater Detention Project Dewatering <br /> WO#UP3620 31 23 19- 1 <br />