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-~~ Wenck <br />August 28, 2009 <br />Ms. Deb Walters <br />Waste Management <br />Elk River Landfill, Inc. <br />22460 Hwy. 169 NW <br />Elk River, MN 55330 <br />Wenck Associates,lnc. <br />1800 Pioneer Creek Center <br />P.O. Box 249 <br />Maple Plain, MN 55359-0249 <br />(763) 479-4200 <br />Fax (783) 479-4242 <br />E-mail: wenckmp@wenck.com <br />Re: Greenhouse Gas (GHG) Impacts from Operational Changes <br />Dear Deb: <br />Impacts to local/regional GHG emissions have been calculated in order to provide an <br />assessment of consequences resulting from operational changes associated with the Elk <br />River Landfill. These calculations, and resulting changes in emissions, have been based <br />on a limited set of information intended to capture the primary contributions from each <br />operational change. As such, the calculations provide a relatively conservative estimate <br />for the potential carbon emissions associated with new disposal locations. However, the <br />actual impacts could vary as more detailed information becomes available. <br />The following table displays the approximate emissions for each route change. In total, <br />an additional 1,489 metric tons of carbon dioxide equivalents (C02-e) will be emitted <br />based solely on the added travel required for disposal. More detailed calculations are <br />provided in the attachment. <br /> <br /> <br />Route <br />,' <br /> <br />Trips I Iona <br />Miles (per <br />trip, r/t) Ilona <br />Miles <br />Traveled Ilona <br />Gallons <br />Consumed o a m <br />C02e <br />Additional <br />Transfer Station Change 8,686 20 173,717 29,951.25 304.30 <br />Direct Haul Chan e 3,429 104 356,569 61,477.37 624.59 <br />Direct Haul Chan e 682 16 10,909 1,880.88 19.11 <br />Direct Haul Change 682 90 61,364 10,579.94 107.49 <br />Processing Facility Change 2,382 104 247,681 42,703.57 433.86 <br />1,489.35 <br />The calculations are based on the following assumptions and methodologies: <br />• All trucks used for disposal are over 26,000 lbs and use diesel. <br />• All trucks have a fuel economy of 5.8 miles per gallon (based on Table 5.4 from <br />Department Of Energy Transportation Energy Data Book, Ed. 26, 2007 as listed <br />T:\0742U 406\Etk River GHG Impactdoc <br />