OHA Drinking Water Services
OHA Drinking Water Services
Contact Report Details

PWS ID: OR41 00257
Who Was Contacted and Phone: Bob Bruce (503) 854-3496
Contact Date: 04/22/2008
Contacted By: ERBELE, HANK (DWP)
Contact Method/Location: Field
Reasons: N/A
Details: SUMMARY: Ct Tracer Study DETAILS: A new Ultrasonic flowmeter was installed on the systems 2100,000 gallon storage reservoir outlet piping. A CT Tracer study was requested to determine the current disinfection contact time. I reviewed project scope with the treatment plant operator and City volunteer (Retired water treatment plant professional). I toured the treatment and storage facilities including disinfection feed system, sample points, storage vessel and flow configuration. I drafted process flowcharts and operation plan for process adjustments for the study to take place on May 6th. ACTION NEEDED: Finalize data evaluation and theoretical contact times and perform study. Compile measured data into a report for the City and DWP.

For further information on this public water system, click on the area of interest below:
System Info :: Report for Lenders :: Alerts :: Violations :: Compliance & Enforcement :: Contacts & Advisories :: Site Visits :: Public Notice
Coliform Summary :: Coliform Results :: Sampling Schedule for Coliform :: Groundwater/GWUDI Source Details :: Plan Review :: Annual Fee
Chemical Group Summary :: Latest Chemical Results :: Entry Point Detects :: Single Analyte Results 
Chemical Schedule Summary :: Chemical Schedule Details
Lead & Copper :: Corrosion Control (LCR) :: Nitrate :: Arsenic :: Radionuclides :: GWR 4-Log :: LT2 :: Cyanotoxins
DBPs :: TOC & Alkalinity :: DBP Sample Sites :: FANLs :: MRDL :: Turbidity :: SWTR :: RAA :: LRAA For SDWIS: 3948