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§63.72--Construction records(a) DOE shall maintain records of construction of the geologic repository operations area at the Yucca Mountain site in a manner that ensures their usability for future generations in accordance with §63.51(a)(3). (b) The records required under paragraph (a) of this section must include at least the following-- (1) Surveys of the underground facility excavations, shafts, ramps, and boreholes referenced to readily identifiable surface features or monuments; (2) A description of the materials encountered; (3) Geologic maps and geologic cross-sections; (4) Locations and amount of seepage; (5) Details of equipment, methods, progress, and sequence of work; (6) Construction problems; (7) Anomalous conditions encountered; (8) Instrument locations, readings, and analysis; (9) Location and description of structural support systems; (10) Location and description of dewatering systems; (11) Details, methods of emplacement, and location of seals used; and (12) Facility design records (e.g, design specifications and "as built" drawings). |