Laserfiche WebLink
Review of Plastic vs.Paper Bag LCA Studies Page 4 <br /> 2. Plastic bags consume less than 6% of the water needed to make paper bags. It <br /> takes 1004 gallons of water to produce 1000 paper bags and 58 gallons of water <br /> to produce 1500 plastic bags.' <br /> 3. Plastic grocery bags consume 71% less energy during production than paper <br /> bags.5 Significantly, even though traditional disposable plastic bags are <br /> produced from fossil fuels, the total non-renewable energy consumed during <br /> their lifecycle is up to 36% less than the non-renewable energy consumed <br /> during the lifecycle of paper bags and up to 64% less than that consumed by <br /> biodegradable plastic bag s.6 <br /> 4. Using paper sacks generates almost five times more solid waste than using <br /> plastic bags.' <br /> 5. After four or more uses, reusable plastic bags are superior to all types of <br /> disposable bags --paper, polyethylene and compostable plastic -- across all <br /> significant environmental indicators.' <br /> C. Litter <br /> While the data appear to indicate that paper and compostable plastic bags may <br /> account for less litter, data also indicates that this finding is offset by the increased <br /> environmental impacts these bags produce versus traditional plastic bags: <br /> 1. The manufacture of paper bags consumes twice as much water and emits about <br /> 60% more greenhouse gases than the production of plastic bags.9 <br /> 2. Compared to disposable plastic bags, biodegradable plastic bags generate <br /> higher levels of greenhouse gas emissions, atmospheric acidification and <br /> eutrophification (a process whereby bodies of water receive excess nutrients <br /> that stimulate excessive plant growth, such as algae blooms).10 <br /> V. CONCLUSIONS/INDICATED ACTIONS <br /> The conclusion to be drawn about how to reduce the environmental impacts and litter <br /> associated with grocery bags is very much in line with both lonQstandinQ EPA <br /> guidelines and the ULS Report philosophy: the issue is not paper or plastic, but rather <br /> finding ways to reduce, reuse, and recycle both of them - in that order. By putting <br /> more items in fewer bags, avoiding double bagging, switching to durable tote bags, <br /> and reusing and recycling disposable bags, significant reductions in material and non- <br /> renewable energy consumption, pollution, solid waste, greenhouse gas emissions, and <br /> litter, will occur. <br /> And, while recycling can help save resources, its real value lies in the reduction of <br /> greenhouse gas emissions, and the minimization of waste going to landfills. Also, <br /> recycling helps reduce litter, as bags are contained and stored. Containment reduces <br /> the potential for them to be left in open spaces, where they become eyesores. <br /> 28 March 2008 <br />