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• • <br /> - within 50' of a slope greater than 20% and over 10' of relief(which would <br /> exclude the north-south segment along S 1st Ave) <br /> MR#9: Operation and Maintenance <br /> A maintenance and operations manual for each different "owner" of stormwater BMPs <br /> credited towards meeting runoff treatment and flow control requirements. The <br /> maintenance and operation manual for each set of must include a first page indicating <br /> the party responsible for maintenance and operation. In addition, the following <br /> language shall also be included in both the M&O manual and the drainage report for <br /> privately owned and operated stormwater facilities: <br /> A copy of the maintenance and operations manual shall be retained on-site or <br /> within reasonable access to the site and shall be transferred with the property to <br /> any new owner. A log of maintenance activities that indicate what actions were <br /> taken shall be kept and be available for inspection by the City of Everett upon <br /> request. <br /> CIVIL PLANS <br /> The collected driveway runoff from lot 2 should be directed to a dispersion trench, <br /> instead of a rock pad,to help prevent channelization of the runoff on the slope. <br /> The following performance standard for BMP T5.13 shall be included on the plans: <br /> BMP T5.13: Post-Construction Soil Quality and Depth <br /> Soil Quality: All areas subject to clearing and grading that have not been covered by <br /> impervious surface, incorporated into a drainage facility, or engineered as structural fill <br /> or slope shall demonstrate the following at project completion: <br /> 1) A topsoil layer with a minimum organic matter content of 10% dry weight in <br /> planting beds and 5%organic content in turf areas, with a pH from 6.0—8.0 or <br /> matching the pH of the undisturbed native soil. <br /> 2) The topsoil layer shall have a minimum depth of eight inches except where tree <br /> roots limit the depth of incorporation of amendments needed to meet the <br /> criteria. <br /> 3) Subsoils below the topsoil layer shall be scarified at least four inches with some <br /> incorporation of the upper material to avoid stratified layers, where feasible. <br /> s:\jzimmerm\word\pr_8417 Evg Way <br />