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<br />Life Cycle Impacts <br />Both the plastic and paper bag industries are resource intensive. These impacts range from those <br />associated with raw material extraction (timber, oil, and natural gas) to the impacts associated with the <br />production and distribution of the products (e.g. energy and water use and air emissions-including <br />greenhouse gasses). Figure 1 below shows the comparative impact from single use plastic and paper <br />bags. <br /> <br />Figure 1: Comparison of Impacts from Paper and Plastic Single Use Bags <br /> <br />Source: (Dart, 2009) <br /> <br />There is no clear “best choice” between using paper or plastic single use bags. For instance, while there <br />may be less energy and water use in the production of plastic bags than in paper bags, paper bags come <br />from a renewable resource, are biodegradable, and have a greater carrying capacity than plastic. The <br />Oregon DEQ addresses the issue of LCA’s for single use bags on its website (DEQ, 2011), captured here: <br /> <br />“Much has been made of competing claims of “greenness” between paper and plastic single-use <br />bags. These claims are sometimes derived through studies called life cycle analyses, or LCAs. LCAs <br />can be a useful way to understand products’ environmental impacts. DEQ has not commissioned its <br />own LCA of grocery bags. It has reviewed several bag LCAs prepared by other organizations <br />(governments and industries). From this review, it is clear that several important variables can <br />significantly affect results. They include: <br /> <br /> The number of plastic bags required to replace one paper bag (or vice versa). <br /> <br /> Consumer behavior regarding reuse of plastic and paper bags (for example, as trash can liners), <br />and how consumers would respond if single-use plastic checkout bags were no longer available. <br /> <br /> Current and future recycling rates, and how the benefits of recycling are accounted for in the <br />analysis. <br /> <br /> How increases or decreases in paper use affect the amount of carbon stored in forests. <br />5 | Page <br /> <br /> <br />