Laserfiche WebLink
G. Engineer may increase or decrease area of erodible earth material to be exposed at one time as determined <br />by analysis of Project conditions. <br />H. Erosion control features installed by Contractor shall be acceptably maintained by Contractor during con- <br />struction period. <br />I. Whenever construction equipment must cross watercourses at frequent intervals, and such crossings will <br />adversely affect the sediment levels, temporary structures should be provided. <br />J. Pollutants such as fuels, lubricants, bitumen, raw sewage, wash water from concrete mixing operations, and <br />other harmful materials shall not be discharged into or near rivers, streams, wetlands and impoundments or <br />into natural or manmade channels leading thereto. <br />1.04 SCHEDULE: <br />A. Prior to start of construction, Contractor shall submit schedules for accomplishment of temporary and <br />permanent erosion control work. <br />B. Work shall not be started until erosion control schedules and methods of operations for applicable <br />construction have been accepted by Owner. <br />1.05 PERMITS: <br />A. Contractor shall obtain and pay fees to obtain NPDES Construction Permit from Minnesota Pollution Control <br />Agency and comply with all applicable regulations and requirements. <br />PART 2 - PRODUCTS <br />2.01 MATERIALS: <br />A. Silt fence shall be machine sliced and shall consist of woven geotextile fabric and supported by steel posts in <br />accordance with Mn/DOT Specification 3886. <br />B. Erosion control materials shall meet requirements of MN/DOT Standard Specifications. <br />C. All other materials shall meet commercial grade standards and shall be approved by Engineer before being <br />incorporated into Project. <br />PART 3 - EXECUTION <br />3.01 SPECIFIC CONCERNS <br />A. WATER QUALITY <br />1. Erosion control measures shall be maintained to prevent -sediment pollution of adjacent water courses. <br />2. Build, maintain, and operate dams, channels, flumes, sumps and other temporary diversion and <br />protective works to divert stream flow and other surface water through or around construction site and <br />away from Work while construction is in progress. <br />3. Unless otherwise specified, a diversion must discharge into same natural drainageway in which its head <br />waters are located. <br />B. DUST CONTROL <br />Division 31— Earthwork <br />DV31-6 <br />