THIS COMPETITIVE COOPERATIVE AGREEMENT FOR A RESEARCH AND DEVELOPMENT PROJECT ENTITLED, “HYDRONET: INTEGRATED PHOTONIC SYSTEM FOR HYDROGEN LEAK LOCALIZATION, QUANTIFICATION AND MONITORING” IS AWARDED TO PRINCETON UNIVERSITY UNDER ARPA-E FOA NUMBER DE-FOA-0002785 (H2SENSE) AND CONTROL NUMBER 2784-1896. THE PURPOSE OF THIS AWARD IS TO PROPOSE AN INTEGRATED SENSING SYSTEM FOR THE DETECTION, LOCALIZATION, AND LONG-TERM MONITORING OF HYDROGEN LEAKS FROM ASSOCIATED INFRASTRUCTURE. THE SENSING SYSTEM COMPOSES OF A DRONE-BASED SENSOR FOR RAPID LEAK QUANTIFICATION AND LOCALIZATION, AND INEXPENSIVE, FIBER OPTIC-BASED SENSORS THAT COULD BE PART OF A WIRELESS NETWORK FOR CONTINUOUS AND LONG-TERM MONITORING. BOTH APPROACHES ARE BASED UPON NOVEL PHOTONIC ADVANCES WITH HIGH SELECTIVITY AND SENSITIVITY. THE DRONE-BASED SENSOR IS OPTIMIZED FOR HIGH FREQUENCY MEASUREMENTS AND PRECISION WHILE MAINTAINING SUFFICIENTLY LOW MASS AND POWER, WHILE THE NETWORK SENSOR NODES ARE OPTIMIZED FOR MANUFACTURABILITY AND COST EFFICIENCIES. AMENDMENT 0001 UPDATED ATTACHMENT 3 AND TECH EVAL