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5. SOURCE CONTROL <br /> This project proposes to construct a garage. Per Volume 1 of the City of Everett 2019 <br /> Stormwater Management Manual residential development does not require source <br /> control. Therefore, no site/development specific source control BMPs are required for <br /> this project. <br /> a PRESERVATION OF NATURAL DRAINAGE SYSTEM <br /> The runoff from the site improvements will be dispersed on-site. However, by not grading <br /> or compacting the majority of the pervious surfaces to remain after construction in the <br /> area of disturbance a maximum amount of site runoff from the developed project will be <br /> absorbed and infiltrated into the existing on-site soils. This will mimic the existing <br /> conditions by maintaining the existing direction and condition of flow from this site. <br /> 7. ON-SITE STORMWATER MANAGEMENT <br /> Due to the fact that the project site is located within the combined sewer area of the City <br /> of Everett,.Section 6-10.1 of the City of Everett Design and Construction Standards and <br /> Specifications manual applies. According to this section, projects that have a total of 200 <br /> square feet or more of net new impervious surface or convert %4 acres or more of <br /> vegetation to lawn or landscape, the project is required to meet the Flow Control <br /> Performance Standard. These standard states "Stormwater discharges shall match <br /> developed discharge durations to existing site durations for the range of existing <br /> discharge rates from the 10-year peak flow through the full 100-year peak flow". <br /> Therefore, two splash blocks have been used to meet this standard (see Section 8 for <br /> details). <br /> City of Everett <br /> EVERErr Reviewed for Permit 11/18/2021 <br /> Bedle Garage 21-0421 <br /> November 2021 Page 10 <br />