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FLUSH WATER V0--11ME . r I/ 23. Fresh water used in the manure flush system = lac-,aa gailonsiday 24. Total flush water (gallons) for storage period #23 x#6 = -wma gallons 25. FLUSH WATER VOLUME (cu ft) for storage period = #24 + 7.5 (1 cu ft = 7.5 gallons) w9,90 cu ft RUNOFF VOLUME 26. Concrete surface area draining into the pond (square feet) Sana 27. Roofed surface area draining into the pond (square feet) 000 28. Surface area of the pond ( ft length x ft width) z5-o- square feet 29. Unpaved surface area draining into the pond (acres) zs 30. 25-year, 24-hour storm event (inches) �• 31. Runoff from paved and roofed areas' due to 25-year, 24-hour storm (cubic feet) #26 x Table 3 value + (#27 + #28) x Table 3 value = 739 7-5- /100 5//Oa 7Z 075 32. Runoff from unpaved surfaces due to 25-year, 24-hour storm event and average winter precipitation over the storage period (cubic feet) This value is going to vary depending upon your location in the state - use Table 4 as a guide. These conservative values are based on a 120 day storage period (December through March). A longer storage period (180 days) and higher thanaverage winter precipitation values and runoff coefficients should be used in areas with high rainfall and runoff such as the North Coast. #29 x Table 4 value = 3 f l4o0 33. RUNOFF VOLUME (cu ft) for storage period = #31 + #32 395 3 7:5 cu ft TOTAL CUBIC FEET OF STORAGE REQUIRED = #7 + # 22 + # 25 + #33 Note: This is only a preliminary sizing estimate ��OS20 cu ft 1 Runoff from paved and roofed areas and the volume of water falling onto the holding pond due to normal winter precipitation over the storage period is not included in these calculations as this value is site specific and usually it is not a very large component of the total storage volume required. Series Number Date Pa e U.CCE-DMMS-2 10197 45