The cost value for the LEED calculation is determined by weight as a percentage of the total. For example, a $100 piece of casework contains 20% wood manufactured and extracted locally, and 80% marble that was only manufactured locally. Since all of the m

The cost value for the LEED calculation is determined by weight as a percentage of the total. For example, a $100 piece of casework contains 20% wood manufactured and extracted locally, and 80% marble that was only manufactured locally. Since all of the material was manufactured locally, $100 goes towards the first point. Since only the wood was both manufactured and extracted locally, only $20 can count towards the second credit point.