\subsection{Molecular Line Emission from FCRAO}
We use the $^{12}$CO (1-0) and $^{13}$CO (1-0) line maps of the COMPLETE survey \citep{Ridge_2006} to measure column density. Both lines were observed simultaneously using the Five College Radio Astronomy Observatory (FCRAO) telescope. The resolution is 46" and the pixels in the maps are Nyquist sampled with a pixel size of 23". The main beam efficiency is assumed to be 0.45 and 0.49, respectively for $^{12}$CO and $^{13}$CO. The flux calibration uncertainty is assumed to be 15 \% (\citet{Pineda_2008}). The channel maps of these two molecular lines are also used to assess the kinematics in the cloud. The observation provides a velocity resolution of 0.12 km s$^{-1}$ for both lines.