OHA Drinking Water Services
OHA Drinking Water Services
Contact Report Details
PWS ID: OR41 00922
PWS Name: VERNONIA, CITY OF
 
Who Was Contacted and Phone: Jeffery Burch (503) 429-6921
Contact Date: 07/08/2013
Contacted By: HENRY, ROBERT (DWP)
Contact Method/Location: Field
 
Assistance Type: CIRCUIT RIDER ASSISTANCE
Reasons: N/A
N/A
 
Details: SUMMARY: CT Tracer Study DETAILS: The City of Vernonia has a surface water treatment plant which pulls water from Rock Creek. The surface water is treated with rapid sand filters with flocculation along with soda ash & chlorine is used to treat the water. The plant is able to produce as much as 700 gpm, with 900 gpm being delivered from the clearwell. Chlorine contact is achieved in an approximately 30,000 gallon clearwell before the water is sent to the distribution system (and first user). The Circuit Rider was contacted by the City to provide assistance with a contact tracer study. A previous effort was made at a contact tracer test, but operational changes were needed for a successful test. Completed draft report for flows at 700 in and 910 out. Coordinated with James Nusrala & City regarding testing at reduced flows. Performed additional tracer testing at reduced treatment plant flow rate. Complete tracer study report submitted to OHA-DWS. Subsequently, modified report per OHA-DWS comments. ACTION NEEDED: None needed at this time.

More information for this water system: SDWIS ID 3998
System Info  ::  Report for Lenders  ::  Alerts  ::  Violations  ::  Compliance & Enforcement  ::  Contacts & Advisories  ::  Site Visits  ::  Public Notice
Coliform Summary  ::  Coliform Results  ::  Coliform Schedules  ::  LT2  ::  GW/GWUDI Source Details  ::  Plan Review  ::  Annual Fee
Chemical Summary  ::  Chemical Results  ::  Chemical Schedules  ::  Chemical Schedule Summary  ::  Arsenic RAA  ::  Cyanotoxins  ::  PFAS
Lead & Copper  ::  DBP Sample Sites  ::  FANLs  ::  MRDL  ::  GWR 4-Log  ::  Turbidity  ::  SWTR  ::  LRAA  ::  DW Source Protection
New! Visit our new Drinking Water Source Protection page.
Information for all water systems:
Water System Inventory  ::  Water System Surveys  ::  Outstanding Performers  ::  Treatment Plant Inspections  ::  Treatment  ::  Plan Reviews
Alerts  ::  Violations  ::  Compliance & Enforcement  ::  Deficiencies  ::  System Scores  ::  Exceedances  ::  Public Notices  ::  Service Lines
Water Advisories  ::  Contact Reports  ::  Cyanotoxins  ::  PFAS  ::  Post-wildfire VOCs  ::  Fluoride  ::  Certification List  ::  DW Source Protection
Introduction  ::  Data Search Options  ::  Water System Search  ::  DWS Home  ::  DWS Rules
Need help? Email Drinking Water Services for assistance.Staff/Partner Login