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B.Worst Case Discharge Analysis and Scenarios Version :27.10.4 <br /> B.1 INTRODUCTION <br /> The Stockton Terminal is classified as a non-transportation related facility. <br /> DischargeEPA • Calculation <br /> • Worst Case Discharge (WCD) <br /> 100% of the largest single tank <br /> • Medium Discharge (MD) <br /> Discharge greater than 2,100 gallons (50 Bbls) and less than or equal to 36,000 <br /> gallons (857 Bbls) or 10% of the capacity of the largest tank, whichever is less and <br /> not to exceed the WCD <br /> • Small Discharge (SD) <br /> Discharge of less than or equal to 2,100 gallons (50 Bbls), not to exceed the WCD <br /> OSPR Discharge • • <br /> . Reasonable Worst Case Spill (RWCS) <br /> The portion of the total linefill capacity which could be lost during a spill, taking into <br /> account the availability and location of the emergency shut-off controls; l�us the <br /> amount of additional spillage that could reasonably be expected to enter California <br /> marine waters during emergency shut-off, transfer or pumping operations if a hose or <br /> pipeline ruptures or becomes disconnected, or if some other incident occurs which <br /> could cause or increase the size of an oil spill. <br /> Total Linefill Capacity+Additional Spillage (during Shut Down) = RWCS <br /> The following planning volume calculations must be performed to determine the <br /> required response resources for a Worst Case Discharge: <br /> Planning Volume for On-Shore Recovery(OSR) <br /> OSR = WCD * % Oil on Shore * Emulsification Factor <br /> Planning Volume for On-Water Recovery(OWR) <br /> OWR = WCD * % Recovered Floating Oil * Emulsification Factor <br /> Recovery Capacity(RC) <br /> RC = OWR * On-Water Recovery Resource Mobilization Factors <br /> The recovery capacity determined by these equations is compared to the appropriate <br /> response capability caps from the EPA tables. The actual contracted response amount is <br /> the lesser of the two values. If the calculated capacity exceeds the capability caps, sufficient <br /> response resources should be available for twice the amount of the caps or up to the total <br /> planning volume, whichever is less. <br /> Shell Supply and Distribution B-2 Stockton Terminal FRP <br /> ©2019 Witt O' Brien's Revision Date:October, 2019 <br />