OHA Drinking Water Services
OHA Drinking Water Services
Contact Report Details
PWS ID: OR41 99999
PWS Name: HALL OF FAME TEST SYSTEM
 
Who Was Contacted: Ron Hall
Contact Phone: 971-673-0405
Contact Date: 03/21/2024
Contacted By: HOFELD, EVAN (DWP)
Contact Method/Location: Phone
 
Assistance Type: OTHER WATER QUALITY - AWOP Call - Cyanotoxin Optimization
Reasons: Operations
 
Details: AWOP Call - Called [operator name] to discuss most recent cyanotoxin detections.

Findings: Operator had not visited watershed in awhile and was unaware of any recent changes. Coagulant dosing is manually adjusted based on turbidity only. Chlorine residual was monitored continuously. No PAC or GAC treatment is available.

Activities Completed: Assisted with guiding operator in developing a cyanotoxin response plan. Evaluated disinfection using Cyanotox spreadsheet. Provided chemical dosing SOP template.

Recommendations: Continue work on developing response plan and chemical dosing SOP and send to [AWOP Staff Name & email address] for feedback.

Referred to: SRF Circuit Rider to evaluate automated coagulant dosing options: [Name & phone number]

Recommended online resources:
Cyanotoxin resources for operators: https://www.oregon.gov/oha/PH/HealthyEnvironments/DrinkingWater/Operations/Treatment/Pages/algae.aspx

Rules monitoring flow chart: https://www.oregon.gov/oha/PH/HEALTHYENVIRONMENTS/DRINKINGWATER/RULES/Documents/cyanotoxins/cyanotoxin-monitoring-flowchart.pdf

Treatment optimization guidance:
OHA-DWS guidance: https://www.oregon.gov/oha/PH/HEALTHYENVIRONMENTS/DRINKINGWATER/OPERATIONS/TREATMENT/Documents/algae/optimizing-toxin-removal.pdf

USEPA guidance: https://www.oregon.gov/oha/PH/HEALTHYENVIRONMENTS/DRINKINGWATER/OPERATIONS/TREATMENT/Documents/algae/EPA-cyanotoxin-treatment-optimization.pdf

CyanoTox Spreadsheet: https://www.awwa.org/Resources-Tools/Resources/Cyanotoxins

More information for this water system: SDWIS ID 4799
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