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7. Project proponents should try lo retai�topsoil on sites to the maximum extent feasible. <br /> Sectlon 4: SURFACEIGROUNQWATER, PLANTS AND ANIMALS <br /> 4.1 Threshold <br /> If an endangered plant or wildliFe apecies is found on a aite prior to or dunng development, the <br /> developer musl comply with all epplicable federel, state, and local regulations, including <br /> preparalion oi hebitat manegement plans. <br /> 4.3 Mitipation Mearurea <br /> 4.3.1 General Mitigodon Meaa�res <br /> 1. The following Best Management Predices (BMPs) must be followed for all constn�ction work <br /> through and immediately adjacent lo enviro�mentally sensitive areas and their bufters, <br /> unless otherwise required by a pertnit issued by a federal or state age�cy. <br /> . Work should be done in the dry season whenever possible(June 15 to September 15). <br /> • Construction staging areas must be located outside of environmentally sensflive areas <br /> and their buHers. Slreams, wellands, buffers, staging areas and construction limits shall <br /> be clearly shown on conslrudion plans. Conetruclion limits shall be clea�ly marked in <br /> the field with orange conatruction fencinp. <br /> • Work shall be done so as to mi�imize turbidity, erosion, and other weter quality impacls. <br /> • Proper erosion and sediment control measures shall be followed to prevent sediments <br /> irom entering creeks or wetlands. Erosio�control measures ahall be epproved by the <br /> Department of Engineering and Public Services and/or agenciea with Jurisdiction. <br /> Measures may include, lwt not be limited to, placing plywood ecross lhe erea where <br /> equfpment will operate; mulching the wellend areas where equfpment will operate; <br /> placing wood chipa atop e tlexible mat to help prevent compadion (the wood chips and <br /> mal must be removed following conatruction); plac!np sill fences end hay bales belween <br /> , construclion areas and all adjacent wetlands and streams; and plecing ecology blocks <br /> behveen conslruclion areas and streams or wetlands when e temporary flll is used for <br /> roads, etc. <br /> • Erosion control measurea ahell be in place and inspected prior to commencement of <br /> work. All erosion control structures shall be inspected regularly to enaure they ere <br /> maintained in working order. <br /> • Any excavation meterials must be placed in an upland area during construction. <br /> . When operating machinery in or near water, extreme care shP:i be taken to prevent any <br /> petroleum products, cement, chemicals, or other toxic or deleterious materiels from <br /> enlering the water. If a spill doea occur, work ehall be stopped immediately and <br /> Ecology's Spill Response Section contacted. <br /> � <br /> ��'� <br />