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1 <br /> ' Proposed James Monroe Elementary School Replacement Suhsiwface Exploration, Geologic Hazards, andRevised Geotechnical Engineering Report <br /> Everett, Washington Geologic Hazards and Mitigations <br /> ' 5. Surface runoff and discharge should be controlled during and following development. <br /> Uncontrolled discharge may promote erosion and sediment transport. Under <br /> no circumstances should concentrated discharges be allowed to flow over significant <br /> slopes. <br /> ' 6. Soils that are to be reused around the site should be stored in such a manner as to <br /> reduce erosion from the stockpile. Protective measures may include, but are not <br /> limited to, covering with plastic sheeting, the use of low stockpiles in flat areas, or the <br /> ' use of straw bales/silt fences around pile perimeters. During the period between <br /> October ls`and March 31S`, these measures are required. <br /> 7. On-site erosion control inspections and turbidity monitoring should be performed in <br /> accordance with Ecology requirements. Weekly and monthly reporting to Ecology <br /> should be performed on a regularly scheduled basis. TESC monitoring should be part <br /> of the weekly construction team meetings. Temporary and permanent erosion control <br /> and drainage measures should be adjusted and maintained, as necessary, at the time of <br /> construction. <br /> ' It is our opinion that with the proper implementation of the TESC plans and by field-adjusting <br /> appropriate mitigation elements (best management practices) during construction, as <br /> ' recommended by the erosion control inspector, the potential adverse impacts from erosion <br /> hazards on the project may be mitigated. <br /> 1 <br /> 1 <br /> 1 <br /> October.5, 2009 ASSOCIATED EARTH SCIENCES, INC. <br /> BWGad-KE090312A3-Projecr.sL200903121KEtWP Page 10 <br /> 1 <br />