Info

—^ Atmospheric Emissions

System Boundary

FIG. 3.4.1 Defining system boundaries. (Reprinted from G.A. Keoleian, Dan Menerey, and M.A. Curran, 1993, Life cycle design guidance manual, EPA/600/R-92/226 [January], Cincinnatti, Ohio: U.S. EPA, Risk Reduction Engineering Laboratory, Office of Research and Development.)

Output

—^ Atmospheric Emissions

Waterborne Waste

Solid Waste

Coproducts

Other Releases

System Boundary

FIG. 3.4.1 Defining system boundaries. (Reprinted from G.A. Keoleian, Dan Menerey, and M.A. Curran, 1993, Life cycle design guidance manual, EPA/600/R-92/226 [January], Cincinnatti, Ohio: U.S. EPA, Risk Reduction Engineering Laboratory, Office of Research and Development.)

FIG. 3.4.2 Steps in the manufacturing stage. (Reprinted from Keoleian, Menerey, and Curran, 1993.)

products to retail outlets. In addition to primary packaging, some products require secondary and tertiary packaging and refrigeration to keep a product fresh, all of which should be accounted for in the inventory.

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