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OHA Drinking Water Services
Contact Report Details |
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| PWS ID: | OR41 00792 | ||
| PWS Name: | SCAPPOOSE, CITY OF | ||
| Who Was Contacted and Phone: | Joe Lewis (971) 246-9004 | ||
| Contact Date: | 09/09/2009 | ||
| Contacted By: | HENRY, ROBERT (DWP) | ||
| Contact Method/Location: | Field | ||
| Assistance Type: | CIRCUIT RIDER ASSISTANCE | ||
| Reasons: | N/A N/A |
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| Details: | SUMMARY: Operational Difficulties at Water Treatment Plant DETAILS: The City of Scappoose owns and operates a Surface Water system, which supplies approximately 5,800 people through 2,000 connections. The City treats water from multiple creek sources. In addition, water is provided through 2 wells. HBH was contacted by the City to provide assistance with a contact tracer study. When discussing the study, it was determined that a hydraulic condition at the surface water treatment plant would potentially interfere with the testing. Further investigation determined that the hydraulic condition interfered with the finish water flow meter readings. I visited site again to verify plan measurements and clear up inconsistencies. I performed hydraulic modeling on WTP finish water piping. It was discovered that a severe hydraulic jump downstream of the flow meter and leaking filter control valves are causing problems with the meter hydraulics. Other problems may exist. ACTION NEEDED: Follow up with the City regarding possible improvements to remedy flow meter problem. | ||