For YKK Plant located in Bangpoo, Samut Prakarn province as shown in Figure 1, a sign of wall tilting and separation had occurred at the southeast corner of the boundary fence on 27th May 2014 as shown in Photo 1. On 31st May 2014, sections of the boundary fence had collapsed with condition presented in Photo 2. Apart from collapse of boundary fence, the ground within YKK plant next to the fence had also shown ground slippage (refer to Photo 3). It should be noted that the water treatment plant is only a few meters away from the slippage zone. Photo 4 present the boundary fence collapse viewed from the waste treatment plant. Recent conditions of the collapsed boundary fence on 21st August are shown in Photos 5 and 6.