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The surface skimmer in the 60ft diameter primary clarifier at the waste water treatment plant in Arcata.
Photo Credit: Dustin Poppendieck
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 04:52, 1 April 2008 | | 900 × 241 (43 KB) | JeffB (talk | contribs) | The surface skimmer in the 60ft diameter primary clarifier at the waste water treatment plant in Arcata. Photo Credit: Dustin Poppendieck |
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