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to be placed in a containment sump meeting the new performance standards?

April 26, 2017containment meeting PERFORMANCE Placed Standards sump

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to be placed in a containment sump meeting the new performance standards?

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No, if only the ALLD is replaced, it will not have to be installed in a containment sump. However, if the STP is also replaced, then the ALLD and STP will have to be placed in a containment sump meeting the requirements of the new performance standards including continuous interstitial monitoring using an electronic sump sensor or vacuum, pressure or hydrostatic interstitial monitoring methods.