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KITTITAS COUNTY SOLID WASTE ON-CALL <br />CLE ELUM TRANSFER STATION TANK REPLACEMENT <br /> SEPTEMBER 2025 Temporary Erosion and Sediment Control <br /> 015713 - 5 <br /> <br />1. Prevent runoff into storm and sanitary sewer systems, including open drainage channels, <br />in excess of actual capacity or amount allowed by authorities having jurisdiction, <br />whichever is less. <br />2. Anticipate runoff volume due to the most extreme short term and 24-hour rainfall events <br />that might occur in 25 years. <br />H. Erosion On Site: Minimize wind, water, and vehicular erosion of soil on project site due to <br />construction activities for this project. <br />1. Control movement of sediment and soil from temporary stockpiles of soil. <br />2. Prevent development of ruts due to equipment and vehicular traffic. <br />3. If erosion occurs due to non-compliance with these requirements, restore eroded areas at <br />no cost to Owner. <br />I. Erosion Off Site: Prevent erosion of soil and deposition of sediment on other properties caused <br />by water leaving the project site due to construction activities for this project. <br />1. Prevent windblown soil from leaving the project site. <br />2. Prevent tracking of mud onto public roads outside site. <br />3. Prevent mud and sediment from flowing onto sidewalks and pavements. <br />4. If erosion occurs due to non-compliance with these requirements, restore eroded areas at <br />no cost to Owner. <br />J. Sedimentation of Waterways On Site: Prevent sedimentation of waterways on the project site, <br />including rivers, streams, lakes, ponds, open drainage ways, storm sewers, and sanitary <br />sewers. <br />1. If sedimentation occurs, install or correct preventive measures immediately at no cost to <br />Owner; remove deposited sediments; comply with requirements of authorities having <br />jurisdiction. <br />2. If sediment basins are used as temporary preventive measures, pump dry and remove <br />deposited sediment after each storm. <br />K. Sedimentation of Waterways Off Site: Prevent sedimentation of waterways off the project site, <br />including rivers, streams, lakes, ponds, open drainage ways, storm sewers, and sanitary <br />sewers. <br />1. If sedimentation occurs, install or correct preventive measures immediately at no cost to <br />Owner; remove deposited sediments; comply with requirements of authorities having <br />jurisdiction. <br />L. Open Water: Prevent standing water that could become stagnant. <br />M. Maintenance: Maintain temporary preventive measures until permanent measures have been <br />established. <br />1.05 SUBMITTALS <br />A. See Section 013000 - Administrative Requirements, for submittal procedures. <br />B. Erosion and Sedimentation Control Plan: <br />1. Submit not less than 30 days prior to anticipated start of clearing, grading, or other work <br />involving disturbance of ground surface cover. <br />2. Include: <br />a. Site plan identifying soils and vegetation, existing erosion problems, and areas <br />vulnerable to erosion due to topography, soils, vegetation, or drainage. <br />b. Site plan showing grading; new improvements; temporary roads, traffic accesses, <br />and other temporary construction; and proposed preventive measures. <br />c. Where extensive areas of soil will be disturbed, include storm water flow and volume <br />calculations, soil loss predictions, and proposed preventive measures. <br />d. Schedule of temporary preventive measures, in relation to ground disturbing <br />activities. <br />e. Other information required by law.