HMMH is assisting the Maryland Department of Transportation Maryland Aviation Administration (MDOT MAA) in the replacement of their noise and operations monitoring system (NOMS) at Baltimore/Washington International Thurgood Marshall Airport (BWI). During procurement, HMMH assisted in the following areas: system specification, including system capabilities and vendor services; harmonizing the specification documents with MDOT MAA procurement policies; and vendor selection, including pre-proposal workshops, proposal evaluation, and vendor interviews. Following the selection of a NOMS vendor, HMMH continues to support MDOT MAA as the system is installed and implemented at BWI. Current tasks include: responses to vendor questions regarding technical specifications; review of vendor documentation during NOMS fabrication, installation, acceptance testing, and training; review of testing procedures and system calibration reports; participation in, and evaluation of, a two-day system demonstration; monitoring and evaluating the 30-day operational test; providing recommendations to MDOT MAA regarding final acceptance; and public outreach to explain the NOMS to the community.