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4. OFFSITE ANALYSIS <br /> DEFINE STUDY AREA: <br /> From observations made during the field visit, and the topographic survey, no upstream <br /> off-site area is found to be tributary to this parcel. This is due to the existing topography <br /> of the surrounding areas as well as the developed nature of this general area. The <br /> downstream flow path is to the northeast corner of the site and into the Madison St. <br /> R.O.W. The existing conveyance system directs the runoff to the east and then north <br /> within Evergreen Way. Since this project is in a developed area with a closed <br /> conveyance system it was not feasible to open and observe the downstream drainage <br /> structures so the analysis stopped shortly off-site. <br /> REVIEW AVAILABLE INFORMATION: <br /> This project is not located within a FEMA floodplain and no other basin plans or drainage <br /> resource information has been located as this time. <br /> FIELD INSPECTION: (Area of Disturbance Only) <br /> This site slopes to the north and northeast with the majority of the site runoff flowing into <br /> the existing on-site conveyance and treatment systems. There were no indications of <br /> erosion or capacity problems in the portion of the downstream system that could be <br /> observed. <br /> DESCRIPTION OF DRAINAGE SYSTEM AND ANY EXISTING OR PREDICTED <br /> PROBLEMS: <br /> The downstream system for this project appears in good condition. The system consists <br /> of engineered conveyance systems. <br /> Rodland Toyota 12-0412 <br /> May 2012 Page-8 <br />