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UNIO 179
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Columbia River Basalt-Grande Ronde Basalt
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Late Tertiary Basalt Aq
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Late Tertiary Basalt Aquifers
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Columbia Plateau basaltic-rock aquifers
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Grande Ronde Basalt Formation
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UNIO 2603
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Columbia River Basalt-Grande Ronde Basalt
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Late Tertiary Basalt Aq
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Late Tertiary Basalt Aquifers
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Columbia Plateau basaltic-rock aquifers
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Grande Ronde Basalt Formation
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