§ 290.405. Storage piles—general requirements.
(a) A person storing coal ash in piles shall minimize the dispersal of coal ash by wind or water erosion.
(b) The coal ash being stored shall be separated from the water table by at least 4 feet without the use of a groundwater pumping system. The Department may waive, in writing, this requirement.
(c) A person storing coal ash in a pile, other than a temporary coal ash storage pile, shall design, install and maintain berms around the storage area and other structures or facilities to collect and, when necessary, treat runoff or leachate, or both, from the storage area. The Department may waive, in writing, the berm requirement when other collection methods are in place.
(d) For storage piles without a liner system or storage pad, the Department may require the person to install and implement water quality monitoring in accordance with Subchapter D (relating to water quality monitoring) where site conditions warrant.
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