| http://www.w3.org/ns/prov#value | - Drains valves, floor drains, expansion joints, sewer lines or other openings that would permit liquids to flow from the curbed area are not permitted Floor and curbing must be constructed of continuous smooth and impervious materials, such as Portland cement, concrete, or steel to prevent or minimize the penetration of PCB's The storage site must be above the 100 year floodwater elevation.
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