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B. UPSTREAM ANALYSIS <br /> During the site visit it was observed that these parcels sit on a localized highpoint for this <br /> area. Therefore, runoff drains to the west and east off of the site with no identifiable up- <br /> stream areas. <br /> C. DOWNSTREAM ANALYSIS <br /> • <br /> Basin 'A': Runoff within Seahurst and the front of Lots 1 & 2 drains to the north within the <br /> Seahurst R/W. The runoff flows in the shoulder along the edge of the roadway for <br /> approximately 200-feet before turning west down El Charlee St. The runoff is collected by <br /> a CB and pipe system that conveys the flows-to the end of the cul-de-sac and then down <br /> to Glenwood Ave. The actual path of the pipe system could not be verified in the field due <br /> to the closed system and pipes crossing private property. <br /> Basin `B': Runoff from the proposed disturbance area of the existing site sheet flows to the <br /> east over vegetated surfaces toward the eastern property line. Runoff appears to leave <br /> the site over the eastern property line and is collected by a ditch/swale within the right-of- <br /> way of 51st PI SW. This ditch/swale directs runoff north and is collected by a culvert and <br /> then a piped conveyance system that drains to the east for 100-feet and then turns north <br /> and passes through private property via an-18" concrete pipe. <br /> Seahurst SP 8 18-0727 <br /> 7 <br /> September 2019 <br />