SABER - SITE-AIR-BASIN EMISSIONS RECONCILIATION. THE OBJECTIVE OF THIS STUDY IS TO DEMONSTRATE THAT (A) HIGH FREQUENCY SAMPLING CAN BE USED TO CREATE INVENTORY EMISSIONS ESTIMATES THAT ACCURATELY REPRESENT EMISSIONS IN A BASIN; AND (B) THE PROPOSED METHOD CAN BE REPLICATED IN OTHER BASINS. THE PROJECT WILL PERFORM METHOD DEVELOPMENT AND VALIDATION IN THE DENVER-JULESBERG BASIN (DJ), IN NORTHEASTERN COLORADO. PLANNED ACTIVITIES INCLUDE PROJECT MANAGEMENT AND PLANNING FOR ALL BUDGET PERIODS, FINALIZING PROJECT GOVERNANCE AGREEMENTS, PLANNING THE DJ FIELD CAMPAIGN, PLANNING THE UPPER GREEN RIVER BASIN (UGR) FIELD CAMPAIGN, AND FINALIZING AND SYNTHESIZING PROJECT DATA. EXPECTED DELIVERABLES INCLUDE THE PROJECT MANAGEMENT PLAN, COMPLETED FIELD CAMPAIGN REPORTS, PROJECT FINAL REPORT, AND UPDATED DEIA PLAN. THE STUDY WILL RESULT IN PAPERS AND REPORTS DESCRIBING THE METHODOLOGY REQUIRED FOR TOP DOWN/BOTTOM UP RECONCILIATION, PROBLEMS UNCOVERED, AND PROPOSED PROTOCOL FOR WIDESPREAD USE.