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,; 2. Work Program uncertainty in the accuracy and completeness of activity data and quantification of emissions. Formal verification of the ICLEI inventory is beyond the scope of this task, but the ESA team includes members with extensive experience conducting formal inventory verification' (CCAR, AB 32, and ANSI qualifications), which will help identify key assumptions and expose potential gaps in inventory quality. The inventory review will help us rank emissions sources according to their percent contribution to the inventory and identify their relative significance in an overall emissions reduction strategy. For major contributing sources, we will review model inputs, check assumptions, and generally evaluate the accuracy and completeness of emissions estimates. Where appropriate, ESA will draw on the strength of individual team members to review specific emissions estimates related to their area of expertise. For example, ESA will analyze emissions associated with management of waste; KEMA will focus on energy used by non - residential and residential sectors; and Fehr & Peers will investigate vehicle miles traveled (VMT). Gaps in the inventory boundary (e.g., exclusion of sources) and activity data will be identified and addressed using the best information available. Specific areas of the inventory that we anticipate will require in- depth verification activities are outlined below. Subtask 2a — Review 8 Adjust ICLEI Inventories The following sections describe specific tasks the ESA team will complete with respect to refining the City's GHG emissions inventories: Transportation Emissions As with many cities, transportation is a very large source of citywide emissions in Pleasanton (64.6% in the 2005 ICLEI Inventory). There are a wide variety of approaches and data sources used to estimate and analyze the transportation sector. For some CAPs, transportation is dealt with quantitatively using local data, while other CAPs rely on generalized data sources that are not entirely adequate to capture the unique effects of local conditions. Some issues in other CAPs include: • The use of generalized transportation emission estimates such as those developed by Caltrans' Highway Performance Monitoring System (HPMS) instead of more detailed City-level tools such as Travel Demand Models. I KEMA is a verifier under ANSI and AB 32; Dave Millar of KEMA and Jeff Caton of ESA are Lead Verifiers under CCAR: • City of Pleasanton Climate Action Plan 2 -5