OHA Drinking Water Services
OHA Drinking Water Services
Contact Report Details

PWS ID: OR41 00540
PWS Name: MONROE, CITY OF
 
Who Was Contacted and Phone: Dave Clayborne (541) 868-6741
Contact Date: 02/09/2009
Contacted By: POTTS, JOHN (DWP)
Contact Method/Location: Field
 
Assistance Type: CIRCUIT RIDER ASSISTANCE
Reasons: N/A
N/A
 
Details: SUMMARY: Tracer Study Preliminary Visit DETAILS: System has recently activated a new membrane WTP using the Long Tom River as a source. The previous source was ground water. The DWP is requiring a chlorine contact time tracer study. An effluent flow meter is installed after the clearwell-- however the 1 MG reservoir does not have an effluent flow meter. I met with Dave to conduct a pre tracer study inspection to verify what equipment was installed, chlorine injection system, sample taps, computer tracking/recording capabilities, etc. I reviewed the clearwell construction plan, as it is baffled. The WTP typically operates at 245 GPM at temperatures 4-14 C and 350 gpm at >15C. I decided to wait until raw water temps exceed 15 C to conduct the study at full operating capacity. Chlorine dosing will require conversion from mi/min to mg/l in order to determine T10. Current dosage is 20 ml/min by drawdown tube for a 1.1-1.2 mgl residual. Chlorine is gravity fed from the old WTP building using exciting equipment (poor design IMG) and dumped into clearwell near raw water intake for mixing. ACTION NEEDED: Contact Tracer Study


More information for this water system: SDWIS ID 3364
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  ::  Corrosion Control (LCR)  ::  DBP Sample Sites  ::  FANLs  ::  MRDL  ::  GWR 4-Log  ::  Turbidity  ::  SWTR  ::  LRAA
Something missing? The new Chemical Results page replaces many pages, including arsenic and nitrate.

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

Introduction  ::  Data Search Options  ::  Water System Search  ::  DWS Home  ::  DWS Rules

Need help? Email Drinking Water Services for assistance.Staff/Partner Login