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SECTION 3125 00 <br />EROSION AND SEDIMENTATION CONTROLS <br />PART 1- GENERAL <br />1.01 TEMPORARY CONTROL OF AIR/WATER POLLUTION AND SOIL EROSION/SILTATION <br />A. This item shall consist of temporary control measures as shown on Plans or as ordered by Engineer or Owner <br />during construction to control water pollution, soil erosion, and siltation through use of temporary rock <br />construction entrance, berms, dikes, dams, sediment basins, silt fences, gravel, mulches, grasses, slope <br />protection, and other erosion control devices or methods. <br />B. Temporary erosion control measures contained herein shall be coordinated with permanent erosion control <br />measures specified as part of this Contract to extent practical to assure economical, effective, and continuous <br />erosion control throughout Project construction period. <br />C. Temporary control may include Work outside construction limits such as borrow pit operations, equipment <br />and material storage sites, and waste areas. <br />1.02 AUTHORITY OF ENGINEER: <br />A. Engineer has authority to limit surface area of erodible earth material exposed by clearing and grubbing, to <br />limit surface area of erodible earth material exposed by excavation, borrow and fill operations, and to direct <br />Contractor to provide immediate permanent or temporary pollution control measures to minimize <br />contamination of adjacent streams or other watercourses, lakes, ponds, or other areas of water <br />impoundment. <br />1.03 CONSTRUCTION DETAILS: <br />A. Contractor will be required to incorporate all permanent erosion control features into Project at earliest <br />practicable time as outlined in accepted schedule. <br />B. Except where future construction operations will damage slopes, Contractor shall perform permanent seeding <br />and mulching and other specified slope protection work in stages, as soon as substantial areas of exposed <br />slopes can be made available. <br />C. Temporary erosion and pollution control measures will be used to correct conditions that develop during <br />construction that were not foreseen during the design stage; that are needed prior to installation of <br />permanent control features; or that are needed temporarily to control erosion that develops during normal <br />construction practices, but are not associated with permanent control features on Project. <br />D. Where erosion is likely to be a problem, clearing and grubbing operations should be scheduled and performed <br />so that grading operations and permanent erosion control features can follow immediately thereafter if <br />Project conditions permit; otherwise, temporary erosion control measures may be required between <br />successive construction stages. <br />E. Engineer will limit area of clearing and grubbing, excavation, borrow, and embankment operations in progress, <br />commensurate with Contractor's capability and progress in keeping finish grading, mulching, seeding, and <br />other such permanent control measures current in accordance with accepted schedule. Should seasonal <br />limitations make such coordination unrealistic, temporary erosion control measures shall be taken <br />immediately to extent feasible and justified. <br />F. If additional temporary erosion and pollution control measures are required due to Contractor's negligence, <br />carelessness, or failure to install permanent controls as a part of Work as scheduled or are ordered by <br />Engineer, such work shall be performed by Contractor at Contractor's own expense. <br />Division 31— Earthwork <br />DV31-5 <br />