Abstract: The results of a comprehensive study aiming toward the optimization of the stability-sensitive beamlines of the NSLS II are summarized and presented. Specifically, satellite beamlines such as the HXN and the SIX were designed to meet the goal criteria of stability required to meet the desired resolution following (a) the study of the natural site characteristics, its attenuation characteristics, and the natural/cultural ground vibration and noise environments (including response to wind loads); (b) the generation of high-fidelity 3-D numerical models that helped establish the sensitivity of response of the NSLS II accelerator ring and the satellite beamlines to external sources, including facility-borne sources; and (c) the optimization of the location relative to the accelerator ring and design options with inherent noise/vibration attenuation and dampening characteristics. Elements of the multifaceted approach will be presented.