The comprehensive dam safety evaluation referred to in section 38 shall be compulsory in the case of, — (a) major modification to the original structure or design criteria; (b) discovery of an unusual condition at the dam or reservoir rim; and (c) an extreme hydrological or seismic event
<span style="margin-left:15px;"></span>The comprehensive dam safety evaluation referred to in section 38 shall be compulsory in the case of, —<br> <span style="margin-left:15px;"></span>(a) major modification to the original structure or design criteria;<br> <span style="margin-left:15px;"></span>(b) discovery of an unusual condition at the dam or reservoir rim; and<br> <span style="margin-left:15px;"></span>(c) an extreme hydrological or seismic event<br><br>