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| | Proposition 3 |
 | | Economic values that are not reflected in markets, such as recreational and amenity values of wildlife and their habitats, may be a major part of a projects economic benefit. |
 | | In principle, the existence value could be held for any object or condition that people are attentive to, including hydroelectric dams, wild salmon, reservoirs, Caspian terns, democratic government, etc. Generally, we expect existence values to be greatest for unique "public goods", such as the Grand Canyon, endangered species, and clean air. |
 | | The existence value for a doubling of the Columbia River salmon runs from a baseline of 2.5 million fish/year under the Northwest Power Planning Council's 1987 plan was estimated by Olsen, Richards, and Scott (1991). |
| www.webpages.uidaho.edu /~joelh/IEAB/Prop3.htm (1481 words) |
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