3310 MCDOUGALL AVE 2019-09-06 - Laserfiche WebLink

r x 2. EXISTING CONDITIONS SUMMARY The site covers approximately 0.41 acres. The existing site contains a building and paved or gravel parking area. Vegetation consists of some grass, however it appears this areas has been driven on and used for parking/storage of vehicles and is compacted. Access to the site will be from the existing roadway to the east. The existing site contains approximately 17,290 sf of impervious surfaces and this project proposes to add an additional 212 sf of'impervious. The entire site will be disturbed as needed for the clearing/grubbing and restoration of the existing site. An additional 5,503 sf (0.13 ac).will be disturbed off-site for frontage improvements, which will include saw cutting the existing pavement and replacing it with new pavement, curband sidewalk. The proposed area of disturbance drains to the east toward the existing roadway. This project will not affect any off-site flows from passing through the project area as in the existing condition. All the new and replaced impervious surfaces will be collected by catch basins and connected to the existing stormwater conveyance system. Since this project site has been developed previously and appears to have been graded the USDA Web-Soil Survey was used to determine the existing soil conditions for this project. The general soil conditions for this project site were found to be Alderwood-Urban land complex type soils. The general site slopes for the project area are flat and average approximately 2 percent down to the east. 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. McDougall Warehouse 17-0212 April 2017 Page 4