2022-249-E-AMS-Town of Carrboro-Farmer’s Market Compost Monitor

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3. In order to account for the avoided electricity-related emissions in the landfilling and combustion pathways, EPA assigns the appropriate regional "marginal" electricity grid mix emission factor based on your location. Select state for which you are conducting this analysis. Please select state or select national average:Region #N/A Region Location: #N/A 4. To estimate the benefits from source reduction, EPA usually assumes that the material that is source reduced would have been manufactured from the current mix of virgin and recycled inputs. However, you may choose to estimate the emission reductions from source reduction under the assumption that the material would have been manufactured from 100% virgin inputs in order to obtain an upper bound estimate of the benefits from source reduction. Select which assumption you want to use in the analysis. Note that for materials for which information on the share of recycled inputs used in production is unavailable or is not a common practice; EPA assumes that the current mix is comprised of 100% virgin inputs. Consequently, the source reduction benefits of both the “Current mix” and “100% virgin” inputs are the same. 2 5. The emissions from landfilling depends on whether the landfill where your waste is disposed has a landfill gas (LFG) control system. If you do not know whether your landfill has LFG control, select "National Average" to calculate emissions based on the estimated proportions of landfills with LFG control in 2012 and proceed to question 7. If your landfill does not have a LFG system, select “No LFG Recovery” and proceed to question 8. If a LFG system is in place at your landfill, select “LFG Recovery” and click one of the options in 6a to indicate whether LFG is recovered for energy or flared. 3 6a. If your landfill has gas recovery, does it recover the methane for energy or flare it? 1 6b. For landfills that recover gas, the landfill gas collection efficiency will vary throughout the life of the landfill. Based on a literature review of field measurements and expert discussion, a range of collection efficiencies was estimated for a series of different landfill scenarios. The "typical" landfill is judged to represent the average U.S. landfill, although it must be recognized that every landfill is unique and a typical landfill is an approximation of reality. The worst-case collection scenario represents a landfill that is in compliance with EPA's New Source Performance Standards (NSPS). The aggressive gas collection scenario includes landfills where the operator is aggressive in gas collection relative to a typical landfill. Bioreactor landfills, which are operated to accelerate decomposition, are assumed to collect gas aggressively. The California regulatory collection scenario allows users to estimate and view landfill management results based on California regulatory requirements. 1 Landfill gas collection efficiency (%) assumptions Typical Years 0-1: 0%; Years 2-4: 50%; Years 5-14: 75%; Years 15 to 1 year before final cover: 82.5%; Final cover: 90% Worst-caseYears 0-4: 0%; Years 5-9: 50%; Years 10-14: 75%; Years 15 to 1 year before final cover: 82.5%; Final cover: 90% AggressiveYear 0: 0%; Years 0.5-2: 50%; Years 3-14: 75%; Years 15 to 1 year before final cover: 82.5%; Final cover: 90% California Year 0: 0%; Year 1: 50%; Years 2-7: 80%; Years 8 to 1 year before final cover: 85%; Final cover: 90% 7. Which of the following moisture conditions and associated bulk MSW decay rate (k) most accurately describes the average conditions at the landfill? The decay rates, also referred to as k values, describe the rate of change per year (yr-1) for the decomposition of organic waste in landfills. A higher average decay rate means that waste decomposes faster in the landfill. 5 Moisture condition assumptions Dry (k=0.02) Less than 20 inches of precipitation per year Moderate (k=0.04) Between 20 and 40 inches of precipitation per year Wet (k=0.06) Greater than 40 inches of precipitation per year Bioreactor (k=0.12) Water is added until the moisture content reaches 40 percent moisture on a wet weight basis National average Weighted average based on the share of waste received at each landfill type 8a.For anaerobic digestion of food waste materials (including beef, poultry, grains, bread, fruits and vegetables, and dairy products), please choose the appropriate type of anaerobic digestion process used. Note that for grass, leaves, branches, yard trimmings and mixed organics, wet digestion is not applicable based on current technology and practices in the United States. Therefore, dry digestion is the only digestion type modeled in WARM for these materials. Only one type of digestion process (wet or dry) can be modeled at a time in WARM. 2 #REF! #REF! 8b. WARM assumes that digestate resulting from anaerobic digestion processes will be applied to land. In many cases, the digestate is cured before land application. When digestate is cured, the digestate is dewatered and any liquids are recovered and returned to the reactor (when using a wet digester). Next, the digestate is aerobically cured in turned windrows, then screened and applied to agricultural fields. Select whether the digestate resulting from your anaerobic digester is cured before land application. 1 9a. Emissions that occur during transport of materials to the management facility are included in this model. You may use default transport distances, indicated in the table below, or provide information on the transport distances for the various MSW management options. 2 9b. If you have chosen to provide information, please fill in the table below. Distances should be from the curb to the landfill, combustor, or material recovery facility (MRF). *Please note that if you chose to provide information, you must provide distances for both the baseline and the alternative scenarios. Management Option Default Distance (Miles) Distance (Miles) Landfill 20 120 Combustion 20 Recycling 20 Composting 20 Anaerobic Digestion 20 10. If you wish to personalize your results report, input your name & organization, and also specify the project period corresponding to the data you entered above. Name Organization Town of Carrboro Project Period From to Congratulations! You have finished all the inputs. A summary of your results awaits you on the sheet(s) titled "Summary Report." For more detailed analyses of results, see the sheet(s) titled "Analysis Results." North Carolina 100% Virgin Current Mix LFG Recovery No LFG Recovery National Average Recover for energy Flare Use Default Distances Provide Information Typical operation - DEFAULT Worst-case collection Aggressive gas collection Dry (k=0.02) Moderate (k = 0.04) Wet (k = 0.06) Bioreactor (k = 0.12) National average - DEFAULT California regulatory collection Wet Digestion Cured - DEFAULT Dry Digestion Not cured DocuSign Envelope ID: 925D6FBC-24A8-425B-8158-E760CA6EAD2A