Oil spill is the release of oil into the environment, which stays and extends on the surface of water, till it will not be cleaned up. The most efficient clean-up method is to create the floating fence able to prevent it from extending, then suck the polluted water out with the special pump and dump it into the sewage. This solution is the best, because it’s the cheapest, the quickest and the simplest. The suggested solution works well, because of the availability of the materials for the fence (Styrofoam, plastic bottles, pieces of wood, cork and garbage) and the pump is powerful enough to suck out the oily water. There might be danger that the water level of Hoan Kiem Lake will decrease because of the pump having sucked too much water. The positive impact of my solution is that it’s quick: the fence can be made out of anything that doesn’t sink; cheap: it doesn’t require expensive equipment and materials; and simple: it doesn’t require special skills. Furthermore, if the turtle accidentally will come to the surface right in the oil spill area, it will touch the organic oil, not the chemicals (if the chemical method was used), or fire (if the controlled burning method was used). The disadvantages of this method are minor: though efficient the method doesn’t provide 100% guarantee to eliminate the oil spill problem. The negative impact on the turtle is that it can be stressed and its shell will become dirty. The solution of insulation the oil spill area with the floating fence, and polluted water removal with the pump seems the best, because of its economic benefits. First of all, the cost of the materials to be used for the fence is very low, because the Styrofoam, plastic bottles, cans and unsinkable garbage are available all over the place. Second, it is very time effective; therefore it contributes to method’s cost reduction. It’s simple because it doesn’t involve complicated and expensive equipment. Even if this method seems perfect, it has its weaknesses and strengths, so it’s recommended to weigh pros and cons before usage of this method in this kind of situations.