Regulatory authorities are approaching these two issues (inaccurate reporting and facility differentiation) in different ways; an example is useful to illustrate possible approaches. The U.S. state of Colorado is implementing the Upstream GHG Intensity Program for production facilities based upon an emissions intensity calculated as a fraction of facility production (SI Section S-1). Colorado provides two methods to compute the emission rate of production facilities. First, the State Default Intensity Verification (SDIV) process utilizes typical inventory reporting methods, but multiplies reported methane emissions by a 'SDIV factor' to account for unreported or under-reported emissions. The SDIV factor can be differentiated by both basin and facility type, if sufficient data is available. Second, operators can chose use the Operator Specific Programs (OpSP), where operators develop their own verification protocol based on direct field measurement and robust auditing of both methods and results . Both methods are intended to correct for under-reporting while supporting differentiation between facility designs and operator practices. The OpSP 80 process is similar to those encouraged by multiple voluntary reporting programs, including OGMP 2.0 and Veritas . The common element in these approaches is to improve inventory reporting by blending (or comparing) independent facility-or equipment-scale TD observations with traditional BU inventories, an approach commonly known as Measurement-Informed Inventory (MII).