OHA Drinking Water Services
Contact Report Details

PWS ID: OR41 00062
PWS Name: YOUNGS RIVER LEWIS & CLARK WD
 
Who Was Contacted: Carl Gifford
Contact Phone: 503-325-4330 (Email address hidden)
Contact Date: 03/02/2020
Contacted By: FARRELLY, PETER (DWP)
Contact Method/Location: Phone
 
Assistance Type: WATER QUALITY ALERT RESPONSE
Reasons: Disinfection Byproducts
 
Details: Carl and I spoke about his following strategy, in rough order:
1. Sample TOC at both sources: North and South forks.
2. Sample TOC after membrane filters, in part to calculate TOC removal by the WTP.
3. Reduce further the Aspmo Tank level (recently reduced to ~75% full)
4. Relatedly, reduce chlorine dose while keeping a detectable residual at ends of distribution (currently ~0.6 mg/L). (Balance 3 & 4)
5. Fine-tune the auto-flusher at the Fort Clatsop sample site.

Then,
6. Research whether installing coagulation would help, given current TOC removals. Maybe it won’t help?
7. Check-in with the Circuit Rider to see if they can add anything.

Check back in April, give or take.
 
Associated Alerts: CHEM8859 - 02/28/2020 - TOTAL HALOACETIC ACIDS (HAA5)

CHEM8664 - 11/04/2019 - TOTAL HALOACETIC ACIDS (HAA5) , TOTAL TRIHALOMETHANES (TTHM)   See also: 12/04/2019

CHEM8480 - 09/04/2019 - TOTAL TRIHALOMETHANES (TTHM)   See also: 10/25/2019

CHEM8385 - 07/01/2019 - TOTAL HALOACETIC ACIDS (HAA5) , TOTAL TRIHALOMETHANES (TTHM)   See also: 07/01/2019, 07/09/2019



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
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: 3874