I went to the article linked by canyoncreek in the very first post in this thread, and a couple statements stood out.

Quote:

�We�re finalizing a clean water rule to protect the streams and the wetlands that one in three Americans rely on for drinking water. And we�re doing that without creating any new permitting requirements and maintaining all previous exemptions and exclusions,� EPA head Gina McCarthy told reporters Wednesday."

and:

�This rule is about clarification, and in fact, we�re adding exclusions for features like artificial lakes and ponds, water-filled depressions from constructions and grass swales,� she said


"Forget pounds and ounces, I'm figuring displacement!"

If we accept that: MBG(+)FGSF(=)HBG(F1)
And we surmise that: BG(>)HBG(F1) while GSF(<)HBG(F1)
Would it hold true that: HBG(F1)(+)AM500(x)q.d.(=)1.5lbGRWT?
PB answer: It depends.