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Contact Report Details

PWS ID: OR41 00556
PWS Name: NETARTS WATER DISTRICT
 
Who Was Contacted: David Hancock
Contact Phone: 503-842-9405
Contact Date: 01/10/2023
Contacted By: CIVIL WEST ENGINEERS, INC (DWP)
Contact Method/Location: Field
 
Assistance Type: CIRCUIT RIDER ASSISTANCE
 
Details: Background/Problem Identification:

Evan Hofeld of OHA reached out to the circuit rider indicating that Netarts Water District needed assistance with a recommendation for corrosion control for their spring source.

Assistance Provided:

The circuit rider analyzed the systemís WQPs and used the EPA OCCT to select a corrosion control method. Based on the spring source WQP available from the water treatment plant operator, (pH=6.27, alk=84 mg/L, Ca=34 mg/L (estimated), DIC=39, no Fe or Mn) the EPA OCCT recommended flowchart is 1a. Our recommendation is that the spring source should be treated with soda ash and the pH raised in 0.25-unit increments (until the corrosion issues subside) up to the theoretical CaCO3 saturation pH of ~7.7.

Follow-Up Actions Needed:

The circuit rider is available to assist further as needed.

Technical Reports to be Prepared and Expected Timeframe:

N/A


More information for this water system: SDWIS ID 3976
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