10. Following are the classes of dams based on the values determined under section 9, in addition to the class referred to in the second paragraph:
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“P” Value Dam Class
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P ≥ 120 A
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70 ≤ P < 120 B
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25 ≤ P < 70 C
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P < 25 D
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A dam in the Very Low Consequence category under sections 17 and 18 is a Class E dam if the “P” value determined under section 9 is less than 70.
If a dam consists of more than 1 section, each section must be assessed individually and the dam class shall be that of the section with the highest “P” value.