7. Secondary containment is an impervious structure that holds fluid. True or False? (a) True (b) False 8. Oil spills tend to occur during what type of activity? (a) off-loading of material (b) transportation (c) storage (d) all of the above 9. What should you always do in the event of a spill? (a) stop working in the spill area (b) notify your supervisor (c) inform your coworkers (d) all of the above 10. A spill that is considered a serious emergency involves: (a) fire (b) explosion (c) injury (d) any of the above 11. In the event of a non-emergency in which the spill is contained: (a) terminate the operation and stop the source of the spill or leak (b) notify the area supervisor (c) call 911 (d) all of the above 12. You should always notify your supervisor in the event of an incidental spill. True or False? (a) True (b) False