Laserfiche WebLink
line would also result in only a minor spill since the ant-siphon valve on the fueling pump would stop the flow. A break <br /> in the fuel delivery piping during fueling would also be limited by the operator. Therefore,the planning scenario <br /> (maximum probable spill)remains the same for these two interconnected tanks: 100 gallons. <br /> These two tanks do operate as a single storage unit. However,the individual secondary containment shells are sufficient <br /> to contain the entire quantity of the two tanks,since a breach in one or both primary tanks will cause the fuel level to <br /> equalize amongst all 3 tanks(the primary tank that is leaking,the secondary containment for that tank,and the non- <br /> leaking other primary tank)or 4 tanks (all primary and secondary tanks reach the same fuel level. It is not possible for <br /> there to be a release to the environment unless there are simultaneous leaks in both the primary and secondary tanks. <br /> Therefore,the sized secondary containment provisions are met. <br /> Even in this extraordinary circumstance,the facility will have active secondary containment by blocking one or both <br /> adjacent storm drain catch basins with elastomeric pads(to be stored with the spill kit at the fueling island). <br /> 4. Add secondary containment for the two new 500-gallon bulk oil storage tanks in the maintenance shop. <br /> This issue will be addressed by adding a permanent PIG (or equivalent)berm around the tanks and directing the excess <br /> spill to the truck wash basin which is connected to a sand-oil separator(and then to the sanitary sewer). <br /> There are several design issues to be worked out here prior to installation to ensure that the secondary containment <br /> meets all applicable operational and regulatory requirements. <br /> 5. Update the rainfall depth from the 24-hr 25-year storm event for use in secondary containment freeboard <br /> calculations. <br /> The Plan update was a bit more involved than I had anticipated. I appreciate everyone's patience while I address these <br /> items in the amended Plan. <br /> If you have any questions or comments,please feel free to contact me directly by email,or at the cell number <br /> below. Thanks. <br /> Best regards, <br /> Tony <br /> i <br />