7400 HARDESON RD 2018-01-02 MF Import

d. Construction schedule, status update repor�ing requirements, and continger�cy provisions to become effective if the schedule is not met. (SEPA Earth and Water Palicies) 2. The City shall require submittal of a geotechnical report when facilities are proposed to be located in areas which contain potentially moisture sensitive soils. Moisture sensitive soils may include, but are not limited to, Tokul gravely loam, McKenna gavely silt loam, Teric Medisaprists, and Makilteo muck. The following minimum miNgation requirements shall be met for all carthwork for facilities on moishue sensitive soils unless otherwise recommended in the geotechnical report: • Limit site disturbance by using tracked equipment, where possible, within the excavation azea. • Remove standing water from the excavation azea. Outfall water should be filtered or run through a sedimentation basin. • Use surface erosion measures in areas in which surface water is anticipated to drain from the excavation azea. Require control measuies to be designed by a professional civil or geotechnical engineer, to prevent offsite surface drainage of sediments. Methods may include, but aze not limited to, use uf silt fences and/or settlement ponds. • Implement a plan to minimize the extent to which these soils become disturbed. Soils which become disturbed, and which aze above their optimum moisture content, should either be allowed to dry to within thcir optimum moisture content and be re-compacted, or be removed from the construction site. (SEPA Earth and Water Policies) 3. Any water quality enhancement or detention facilities proposed near steep slopes wiil require detailed geotechnical analysis and design that documents and ensures their safety. (SEPA Earth and Water Policies) 4. Prior to issuance of grading permits for removing earth from a site, the applicant must demonstrate that permits have been obtained for placement of the earth off-site. (SEPA Earth and Water Policies) Durine Construction/Earthwork 5. All earth�vork within a geologically hazardous azea or its required Uuffer must be performed under the supervision of a professional civil or geotechnical engineer. The engineer m�st provide certification to the City that all work was done in compliance with requirements set forth in the City approved geotechnical report. (SEPA Earth and Water Policies) 6. In order to minimize erosion during construction, all soil piles shall be covered with plastic sheeting or other impervious covering staked to the gound or anchored with rocks or sandbags. Berms, earthen or othenvise, must be constructed at the perimeter of excavated areas to prevent adjacent site runoff from entering the excavations. (SEPA Earth and Water Policies) � ��'