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Portland sewage treatment plant settling tank construction |
12/28/1949 |
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Portland sewage treatment plant framing for administration building |
09/30/1949 |
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Portland sewage disposal outfall unit no. 1 |
07/11/1949 |
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Portland sewage disposal facility site grading |
07/26/1949 |
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Portland sewage disposal facility laboratory |
07/27/1949 |
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Portland sewage disposal construction of outfall unit no. 1 |
07/18/1949 |
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Men standing next to jeep at Portland sewage disposal monolithic concrete outfall sewer no. 1 |
12/16/1949 |
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Men constructing digester framing at Portland sewage treatment plant |
12/28/1949 |
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Man welding framing for digester at Portland sewage treatment plant |
12/28/1949 |
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Columbia River outfall no. 1 |
07/05/1949 |
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Columbia Blvd Wastewater Secondary Treatment Facilities vault no. 1 and polymer mix tank |
09/13/1983 |
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Columbia Blvd Wastewater Secondary Treatment Facilities unloading outfeeds |
08/31/1983 |
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Columbia Blvd Wastewater Secondary Treatment Facilities Sludge Facility Leak |
05/06/1982 |
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Columbia Blvd Wastewater Secondary Treatment Facilities silo outfeed installation |
08/25/1983 |
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Columbia Blvd Wastewater Secondary Treatment Facilities preheat tank |
04/22/1982 |
