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PO Box 1928 STI SP-001 <br /> POWERS BENI94510 <br /> TEL 707707 333343400 STOCKTON EAST WATER DISTRICT STOCKTON,CA <br /> FAx 707 922 2284 <br /> ENGINEERING&INSPECTION,INC. ` —.powersei.com Gasoline Tank <br /> 4.3. Venting Analysis <br /> VENTING SELECTION (SP001, NFPA30, UL142,AP12000) <br /> Tank Shape Horizontal Cylindrical <br /> Diameter or Width,D/W 8.5 ft <br /> Fill Height,H NA ft <br /> Length,L 13.5 ft <br /> Size of Largest Nozzle 4 in <br /> Product class Class 113 <br /> Capacity 5000 gal <br /> Wetted Area 355 sq.ft <br /> Venting Capacity Required,SCFH 290,636 SCFH <br /> Recommendations: <br /> Min.Nominal Pipe Size,Normal Vent 4-in or larger <br /> Min.Nominal Pipe Size,Normal Vent,for tank <br /> with manhole as emergency vent 2 in <br /> Min.Nominal Pipe Size,Emergency Vent 8 in <br /> Emergency Vent Size,w/o Screen NA in <br /> Emergency Vent Size,Screen NA in <br /> VENT SELECTION <br /> Type of Venting lFixed Roof with Pressure Vacuum Venting <br /> Normal Vent: Normal Venting Capacity <br /> Number of Normal Vents 2 <br /> Size of Vent 1 on Roof(in) 2 in 8,500 SCFH <br /> Size of Vent 2 on Roof(in) 4 in 116900 <br /> Size of Vent 3 on Roof(in) 0 in 0 <br /> Size of Vent 4 on Roof(in) 0 in 0 <br /> Size of Largest Product In/Out Nozzle 4 in <br /> Normal Venting Size Ok? Ok <br /> Emergency Vent: Emergency Venting Capacity <br /> Number of Emergency Vents 2 <br /> Size of Emergency Vent 1 8 in 504,818 SCFH <br /> Size of Emergency Vent 2 8 in 1 504818 <br /> Existing Venting Capacity Ok? Sufficient <br /> Vent Options: 4-in normal vent,8-in emergency vent <br /> Conclusion: <br /> The tank is equippped with 2:2-in normal vent and 2:8-in emergency vent.The required venting capacity for the tank is 290635.60497973 <br /> SCFH.The largest nozzle on the tank is 4-in.The existing normal venting size is Ok.The existing total venting capacity of 1,135,036 SCFH is <br /> Sufficient.Venting system recommendation for this tank:4-in normal vent,8-in emergency vent. <br /> STI-SP001 Stockton Water District TkNo Gasoline Stockton,CA 2019 Rev Dale Printed:214119 <br /> O..docx <br /> ©2018 PE&I Inc. <br /> Page 17 <br />