Stone concrete ponds 0.8 m wide, deep M200 rectangles 0.3 m, 0.2% for ramps create manholes for water collection. Manholes for water collection from a 40 m-60 m, concrete manholes stone 2x2x size 0.8 m M200 rectangles, on manholes latest electric pump draining water. Power sources for pumped drainage criteria issued by the construction and power source are redundant generators.
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