You have purchased a 27 acre property of land that is forested to build a house. You have decided to clear a 24,000 sq. ft. area to build a 2300 sq. ft. house and maintain a fire break from the forest. Your property averages about 350 trees per acre and is about 80% Douglas Fir of about 15 diameter and 56' tall. Determine: a. If you wanted to use the wood from the 24,000 sq. ft. you cleared, will you have enough Douglas Fir trees for the sheathing and framing of your house? OOT To prepare the lumber you need to send it to a lumber mill. Ifa truckload of lumber holds 4500 board feet and you have to truck the wood 180 miles each way to the lumber mill and a semi-truck gets about 6.5 miles per gallon using diesel. How many trees will you need to plant to offset just the transportation to produce your lumber if you want to offset the CO2 within 10 years of planting the trees? Assume similar CO2 emissions as gasoline at 8.92* 10 metric tons of CO/gallon and that you plant Douglas-fir trees, which will sequestera total of 39.7 lbs of carbon in their first 10 years. (39.7 is found by summing the total carbon sequestered each year multiplied by the survival rate of the tree on the Sequestration Worksheet referenced in the Lesson 23 handout. There are 3.67 lbs of CO2 sequestered for every lb of carbon.) c. How many more trees will you need to plant to offset the energy to mill, surface (plane) and kiln-dry your wood? Assume the embodied energy to do this is 2.5 MJ/1 kg of lumber with a lumber weight of 35 pcf and the conversion of 2.204 lbs/kg. The mill and kiln are run electricity at a rate of 1,383.56 lbs CO2 per megawatt-hour (MW/h) delivered. You can convert between MW/h and MJ using: 1 MW/h 3600 MJ by