OHA Drinking Water Services
OHA Drinking Water Services
Contact Report Details

PWS ID: OR41 00055
PWS Name: ASTORIA, CITY OF
 
Who Was Contacted and Phone: Eric Bufkin (503) 325-3524
Contact Date: 11/28/2016
Contacted By: HOFELD, EVAN (REGION 1)
Contact Method/Location: Office
 
Assistance Type: WATER QUALITY ALERT RESPONSE
Reasons: Disinfection Byproducts
Operations
 
Details: SUMMARY: Alert for HAA5 OEL Exceedance Due to Nov 2016 Sample Results DETAILS: On 11/28/16, I received an alert for individual location results above the HAA5 MCL. These results caused an exceedance of the HAA5 MCL as the LRAA was 0.062 mg/l at the 1st and D street sample location due to sampling on 11/16/16. Eric Bufkin responded on 11/28/16 that he was working on the OEL report and subsequently submitted the OEL report on 12/1/16. The OEL report indicated that due to construction on a new Spur 14 source, they were unable to use their Middle Lake source, which is typically lower in organics and turbidity. The primary water source during the exceedance was Main Lake and there had been an increased level of tannic acid and reduced pH levels, which required additional chlorine at the treatment plant and at the booster stations to maintain a safe disinfectant residual. Middle Lake was brought back on-line on November 30, 2016, which has resulted in reduced tannic acid levels coming into the treatment plant. I spoke to Eric on 12/7/16 and he said he was working on a Tier 2 public notice. ACTION NEEDED: System completed OEL report and will issue Tier 2 public notice for the HAA5 MCL exceedance within 30 days.
 
Associated Alerts: CHEM7427 - 11/28/2016 - TOTAL HALOACETIC ACIDS (HAA5) , TOTAL TRIHALOMETHANES (TTHM)

CHEM7427 - 11/28/2016 - TOTAL HALOACETIC ACIDS (HAA5) , TOTAL TRIHALOMETHANES (TTHM)

CHEM7427 - 11/28/2016 - TOTAL HALOACETIC ACIDS (HAA5) , TOTAL TRIHALOMETHANES (TTHM)

CHEM7427 - 11/28/2016 - TOTAL HALOACETIC ACIDS (HAA5) , TOTAL TRIHALOMETHANES (TTHM)



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 :: PFAS
DBPs :: TOC & Alkalinity :: DBP Sample Sites :: FANLs :: MRDL :: Turbidity :: SWTR :: RAA :: LRAA For SDWIS: 3873