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3400 : Elk Rock Pumping Station |
12/31/1981 |
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3491 : Columbia Blvd Wastewater Treatment Plant |
12/31/1980 |
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3318 : St Marks Church NW 21st Ave |
06/15/1977 |
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3412 : SW 35th Ave and SW Beaverton-Hillsdale Hwy |
05/19/1977 |
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23320 : SE 73rd Ave from SE Foster Rd to 100'S |
08/13/1975 |
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3304 : N Cook St Sewer approximately 1100' southeast of Beech St |
05/07/1975 |
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3370 : Willamette Interceptor Sewer Unit 2, Elk Rock |
12/31/1974 |
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3418 : Culvert installation NW Front Ave |
12/31/1974 |
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4962-C : NW Yeon Ave and NW Front Ave |
12/31/1970 |
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3428 : SW 14th Ave sewer |
12/31/1962 |
