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Containment Calculations <br /> Ralph Hayes & Son Tracy Facility <br /> 20177 5,McArthur Dr. <br /> Tracy,California 95304 <br /> Bulk Storage Tanks Containment Structure <br /> Net Containment Volume Calculations <br /> Length of Containment Wall 50 if Volume(Gallons) <br /> Width of Containment Wall 12.0 ft <br /> Total Area of Containment Wall 600 ft2 <br /> Height of Containment Wall 3,8 ft <br /> Volume of Containment Wall: 2,250 ft' 16,831 gal <br /> Volumes to Subfract from Containment <br /> Note: Tank 2 is on stilts and sits above the tap of the containment tall.No subtractions required. <br /> Horizontal ranks 3 and 4 <br /> Tank Diameter 4.0 ft <br /> Radius(r) 2.0 ft <br /> Standoff Height 0.0 ft(from ground to tank) <br /> Waterline(d) 3.8 ft(bottom edge to top of containment wall <br /> Angle from center to wall height 5.3 Radians <br /> 302.1 Degrees <br /> Tank Area(each)@ wall height 12,2 ft2 <br /> Tank Length(each). 6 ft <br /> Quantity 1.0 ea <br /> Volume(2 tanks) 146,9 ft' (1,099)gal <br /> Drums <br /> Tank Diameter 1.9 ft <br /> Tank Area 2.9 ft' <br /> Height of Tank Below Wall 2,9 ft <br /> Volume(4 drums) 33.2 ft' (248)gal <br /> Volume Required to be Contained.- <br /> Largest <br /> ontained.Largest Contained Vessel: <br /> Tank Shell Volume 0 Gallons 10,D0 <br /> Add 10%of tank volume as safety factor 00 Gallons <br /> Rainfall Total:25-year,24-hour Storm Event <br /> Inches of precipitation 2.47 in <br /> Convert to feet 0.21 ft <br /> Area of containment basin 600 ft' <br /> Volume of Rainfall 123.50 ft' 924 Gallons <br /> Volume to Contain 10,924 Gallons <br />