Construct A Computation Model

The next step in an LCI is model construction. This step consists of incorporating the normalized data and material flows into a computational framework using a computer spreadsheet or other accounting technique. The sys-

Energy 3 x 109 Btu

Water 600 gal

1600 lb Raw or Intermediate " Material

Energy 3 x 109 Btu

Water 600 gal

1600 lb Raw or Intermediate " Material

1000 lb Product A

500 lb Product B

30 lb Atmospheric Emissions

100 lb Solid Waste

10 lb Waterborne Waste

1000 lb Product A

500 lb Product B

30 lb Atmospheric Emissions

100 lb Solid Waste

10 lb Waterborne Waste

Energy 2 x 109 Btu i

Water 400 gal

1067 lb Raw or Intermediate Material

Energy 2 x 109 Btu i

Water 400 gal

1067 lb Raw or Intermediate Material

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"V

Transportation

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