1)
Why can we not learn Kibus Begadim by the one who gathers the ashes of the Parah from the D'rashah in Pasuk 8?
1.
Sifri: We do indeed learn it from there, and the current Pasuk teaches us that the one who gathers the ashes is even Tamei via Heset - it he moves without actually touching it.
2)
Why does the Torah insert "Chukas Olam" here and in Pasuk 21 in connection with the the Eifer ha'Parah being Metamei?