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3.2 INSTALLATION AND OPERATION <br />C. The location of every element of the surface water control systems shall be such that <br />interference with excavation and other construction activities is avoided to the extent <br />practical or otherwise minimized. Locations shall be subject to review by the Engineer. <br />D. When the surface water control systems do not meet the specified requirements, and as a <br />consequence loosening or disturbance of the subgrades, instability of the slopes or <br />damage to facilities, foundations or structures occurs, the Contractor shall supply all <br />materials, labor, and equipment, and perform all work for restoration of subgrade soils, <br />fill soils, slopes, facilities, foundations, or structures, to the satisfaction of the Engineer, <br />at no additional cost to the Owner. <br />3.3 INSTALLED SYSTEMS <br />A. Provide, operate, and maintain surface water control systems of sufficient size and <br />capacity to: permit excavation and subsequent construction in sufficiently dry conditions <br />so as to not interfere with construction of the Work in accordance with the requirements <br />of all relevant Specifications. Continuously maintain excavations sufficiently free of <br />water so as to not interfere with construction of the Work in accordance with the <br />requirements of all relevant Specifications, regardless of source, and until backfilled to <br />final grades indicated on the Drawings. <br />B. Surface water control systems shall be sufficient to maintain excavation and backfill <br />activities on a surface that is free of standing or running water from any source, whether <br />groundwater or surface runoff. Protect excavations and fill from surface runoff running <br />into the excavations. <br />C. Provide, operate, and maintain surface water control systems for the entire duration of the <br />Work, or until allowed by the Engineer to discontinue operating and maintaining the <br />systems. <br />D. In the event the that system(s) fails for any reason during excavation or backfilling <br />operations, immediately repair or replace the failing components of the system to avoid <br />damage to the existing dam embankment and other existing facilities. All work required <br />due to failure of the surface water control facilities shall be at the Contractor's sole <br />expense. The Contractor shall be prepared to immediately backfill any open excavation <br />with permanent Work. <br />3.4 DISPOSAL OF WATER <br />A. Discharge stormwater as required by stormwater discharge permit and Owner approval <br />and in a manner that will not cause erosion or flooding, or otherwise damage existing <br />facilities, completed Work, or adjacent property. <br />3.5 REMOVAL <br />A. All elements of the surface water control systems shall be removed from the site at the <br />completion of the Work <br />END OF SECTION 02230 <br />Surface Water Control February 2017 02230-3 <br />