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The 60ft diameter primary clarifier at the Arcata,CA waste water treatment plant.
Photo Credit: Dustin Poppendieck
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 02:12, 1 April 2008 | | 1,000 × 400 (108 KB) | JeffB (talk | contribs) | The 60ft diameter primary clarifier at the Arcata,CA waste water treatment plant. Photo Credit: Dustin Poppendieck |
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