  We construct a realization of the L-operator satisfying the RLL-relation of
the face type elliptic quantum group B_{q,lambda}(A_2^(2)). The construction is
based on the elliptic analogue of the Drinfeld currents of U_q(A_2^(2)), which
forms the elliptic algebra U_{q,p}(A_2^(2)). We give a realization of the
elliptic currents E(z), F(z) and K(z) as a tensor product of the Drinfeld
currents of U_q(A_2^(2)) and a Heisenberg algebra. In the level-one
representation, we also give a free field realization of the elliptic currents.
Applying these results, we derive a free field realization of the
U_{q,p}(A_2^(2))-analogue of the B_{q,lambda}(A_2^(2)) -intertwining operators.
The resultant operators coincide with those of the vertex operators in the
dilute A_L model, which is known to be a RSOS restriction of the A_2^(2) face
model.
