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Inventory - 1 Emission Factors

This inventory analysis delves into the shortcomings of current emission factors databases, scrappage assumptions, and leaker inclusion weighing to improve accuracy. The report also highlights misestimations in population, equipment usage rates, and future projections, leading to inflated reduction estimates. Recommendations aim to address these issues for more precise assessments. Contact Outdoor Power Equipment Institute for detailed insights.

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Inventory - 1 Emission Factors

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  1. Inventory - 1Emission Factors • Inadequate support for current emission factors • database of baseline tests • scrappage assumptions • inclusion and weighing of leakers • ?? The Outdoor Power Equipment Institute 341 South Patrick Street • Alexandria, VA 22314 • 703-549-7600 • 703-549-7604 FAX • www.opei.org

  2. Inventory - 2Activity Factors • Mis-estimate of current populations • Wrong use of recent survey data and extrapolations therefrom • Wrong use of CA fractions of national sales • Mis-estimate of current equipment usage rates (hours/yr) • Improper projection to future years The Outdoor Power Equipment Institute 341 South Patrick Street • Alexandria, VA 22314 • 703-549-7600 • 703-549-7604 FAX • www.opei.org

  3. The Outdoor Power Equipment Institute 341 South Patrick Street • Alexandria, VA 22314 • 703-549-7600 • 703-549-7604 FAX • www.opei.org

  4. Inventory - 3Estimate Reductions • Appear larger because baselines are inflated • Assumed percent reductions based on poor database as noted earlier • Assume unrealistically low deterioration based on ?? • Do not consider delayed market penetration due to lack of equipment availability or more cost (i.e., static analysis) • Do not factor in realistic fuels The Outdoor Power Equipment Institute 341 South Patrick Street • Alexandria, VA 22314 • 703-549-7600 • 703-549-7604 FAX • www.opei.org

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