  We have obtained maps of the large scale outflow associated with the UCHII
regionG5.89-0.39 in CO and 13CO (J=3-2), SiO (J=8-7,J=5-4), SO2
(13(2,12)-13(1,13)) and H13CO+(J=4-3). From these maps we have been able to
determine the mass (3.3 M_sun), momentum (96 M_sun km/s), energy (3.5x10^{46}
erg), mechanical luminosity (141 L_sun), and mass loss rate
(~1x10^{-3}M_sun/yr) in the large scale outflow. The observationally derived
parameters were used toguide 3D magnetohydrodynamic models of the jet entrained
outflow. Through the combination of observations and simulations, we suggest
that the large scale outflowmay be inclined by approximately 45 deg to the line
of sight, and that the jet entraining the observed molecular outflow may have
been active for as little as 1000 years, half the kinematic age of the outflow.
