10-48. The first corrective actions to be taken as soon as possible after a spill has been discovered are known as 1. discovery and notification 2. containment   and   countermeasures 3. recovery  and  disposal 4. documentation and cost recovery 10-49. What is the main reason for isolating and  evacuating  a  spill  area? 1. To  protect  life 2. To  protect  health 3. Either 1 or 2 above 4. To  protect  the  environment 10-50. Booms are available in various heights and depths designed to meet their use requirements under various wind and sea conditions. What is the usual length of a boom? 1. 25 ft 2. 50 ft 3. 75 ft 4. 100 ft 10-51. Procedures to contain oil spills on land depend on all but which of the following factors? 1. Amount  of  oil 2. Type of oil 3. Source of oil 4. Type  of  soil 10-52. A  spill  of  JP-4  is  allowed  to  evaporate. This  is  an  example  of 1. fuel  removal 2. fuel   containment 3. fuel  isolation 4. fuel  evacuation 10-53. Which of the following methods of fuel removal may be allowed only if the oil can  NOT  be  removed  by  other  means? 1. Biodegradation 2. Burning 3. Dispersion 4. Evaporation 10-54. Physical-mechanical  methods  of  oil removal  include  the  use  of  skimmers. Which of the following types of skimmers is based on the Weir principle and is designed for use in congested harbor areas? 1. Small 2. Large 3. Suction  base 4. Sorbent  surface 10-55. 10-56. 10-57. 10-58. 10-59. 10-60. 10-61. Which of the following types of skimmers work best in calm, debris-free waters because of their high susceptibility to wave  action  and  clogging? 1. Small 2. Medium 3. Large 4. Suction-based The Mark I Spill Control Kit is best used with which of the following kinds of  oil  spills? 1. Protected   open-water   spills 2. Small  ship-side  spills 3. Congested harbor area spills 4. Large  area  spills The use of which   of  the  following  agents is  prohibited  by  Federal  regulations? 1. Emulsifiers 2. Sinking  agents 3. Gelling  agents 4. Burning  agents Question  10-58  is  to  be  judged  True  or False. Whenever  possible,  the  oil  collected from  a  spill  should  be  burned. cause of Which  of  the    following is the the  majority   of  oil  spills? 1. Human  error 2. Obsolete   equipment 3. Leaky   containers 4. All of the above Regulations  that  require  the  Navy  to control  sewage  discharge  were promulgated  by  the 1. President  of  the  United  States 2. Secretary  of  Defense 3. Secretary  of  the  Navy 4. Chief  of  Naval  Operations In what   year  was  the  decision  made install   CHT  systems  aboard  ships? 1. 1970 2. 1972 3. 1976 4. 1980 to 65