ARPA-E is initiating the MONITOR Field Test Site program which will support the development of a simulated, but realistic natural gas test site for use by MONITOR Awardees. The test site will enable the evaluation of MONITOR methane sensors and detection systems under realistic use-case scenarios. Further, the data generated during the field tests will demonstrate the performance capabilities of the technologies and could be used by the MONITOR Awardees to accelerate the commercialization of their technologies. Under the MONITOR Field Test Site program Awardee(s) will not develop new technologies, but rather will operate a field test site, including any needed design and construction. ARPA-E will determine which MONITOR technologies are tested at the Applicantâ€™s facility. Applicants should not propose specific technology vendors as partners in this program. Awardee will provide independent, unbiased data gathering, analysis and test services in this program. Awardee must also commit to, and the award will require, maintaining strict confidentiality regarding the technical details of the systems being tested and the results that are generated. Test data to be generated about individual MONITOR systems will only be provided to the specific MONITOR Awardee whose system is being tested and to ARPA-E. Awardee will not obtain rights or other intellectual property rights in testing results. To obtain a copy of the Funding Opportunity Announcement (FOA) please go to the ARPA-E website at https://arpa-e-foa.energy.gov. ARPA-E will not review or consider concept papers submitted through other means. For detailed guidance on using ARPA-E eXCHANGE, please refer to the ARPA-E eXCHANGE User Guide (https://arpa-e-foa.energy.gov/Manuals.aspx).