1450 80TH ST SW 2018-01-02 MF Import

MAR-20-02 10.90 FROM.EVER//ETT PLANNING DEPT ID.926226713742 PACE 13/26 • Construction staging areas must be located outside of environmentally sensitive areas and their buffers, unless determined by the Planning Director to be infeasible. Streams, wetlands, buffers, staging areas and construction limits shall be clearly shown on construction plans. Construction limits shall be clearly marked in the field with orange construction fencing. • Work shall be done so as to minimize turbidity, erosion, and other water quality impacts. Proper erosion and sediment control measures shall be followed to prevent sediments from entering creeks or wetlands. Erosion control measures shall be approved by the Department of Engineering and Public Services mid/or agencies with jurisdiction, Measures may include, but tot be limited to, placing plywood across the area where equipment will operate; n. ing the wetland areas where equipment will operate; placing wood chips atop a flexible mat to help prevent compaction (the wood chips and mat must be removed following constructinn); placing silt fences and hay bales between construction areas and all adjacent wetlands and streams; and placing ecology blocks between construction areas and streams or wetlands when a temporary fill is used for roads, etc. r • Erosion control measures shall be in place and inspected prior to commencement of work. All erosion control structures shall be inspected regularly to ensure they are maintained in working order. • If a pipe is being trenched through the area, measures shall be taken to prevent the de - watering of the wetland (e.g. cut off collars, etc.). • When operating machinery in or near water, extreme care shall be taken to prevent any petroleum products, cement, chemicals, or other toxic or deleterious materials from entering the water. If a spill does occur, work shall be stopped immediately and Ecology's Spill Response Section contacted. • Equipment maintenance shall not occur in or adjacent to wetlands and streams. • After construction, the site must be returned to its original grades. Care must be taken to not drain wetlands or alter water flows or patterns. • Whenever feasible, if wetland plant species are not invasive, they should be removed prior to construction and placed aside in a shady damp location, such as under wet burlap sacks. Following construction, they should be replaced in the wetland area.