2410 WALNUT ST 2018-01-02 MF Import

2. EXISTING CONDITIONS SUMMARY The site covers approximately 0.18 acres The existing site contains landscaping with a few bushes/shrubs along the eastern and southern property lines and a previously removed SFR. Access to the site will be from the existing road to the east (Walnut St) and the ally to the west Approximately 3,910 sf (0.09 acres) of the site will be impacted by new impervious surfaces with the entire site, approximately 7,920 sf (0 18 acres) being disturbed as needed for the clearing/grubbing and restoration of the existing site. The proposed area of disturbance is the entire site. The proposed area of disturbance drains to the east. The existing road to the east does not drain toward this property, however a portion of the existing ally does drain toward this property. This project will not affect any offsite flows from passing through the site as in the existing condition. All of the proposed Impervious surfaces for this project will be dispersed on -site and leave the project parcel as sheet flow Since this lot has been cleared previously and appears (,_ have been graded the USDA Web -Soil Survey was used to determine the existing soil conditions for the parcel. Refer to Figure 4 The sods are mapped as Alderwood-urban land complex. The general site slopes, in the area of disturbance, are flat and average approximately 5 percent. Based on the existing soil information and the setbacks of the proposed improvements from any of the property lines or critical areas there is little potential for erosion or sedimentation during construction, assuming the basic BMPs included in the SWPPP are installed and maintained properly Refer to Figure 2 for an existing basin map. Walnut SFR 14-0420 May 2014 Page 4