OHA Drinking Water Services
OHA Drinking Water Services
Contact Report Details
PWS ID: OR41 94283
PWS Name: SLEEPY HOLLOW RV PARK
 
Who Was Contacted: Jonathan Woody
Contact Phone: 541-643-6137 (Email address hidden)
Contact Date: 11/16/2022
Contacted By: DOWNS, KENT (DWP)
Contact Method/Location: Email
 
Assistance Type: OTHER REGULATORY - IDSE Sampling schedule
Reasons: Disinfection Byproducts
 
Details: IDSE Monitoring at sites 3 and 7.

1st collection of DBP samples done when WTP was unknowingly not running with coagulant and system was pre-chlorinating. A request was made by Jonathan to allow the system to resample for DBPs with the system operating without pre-chlorination and with the coagulant at the right dosage.

2nd collection of DBP samples done on October 1st. Results not available. The lab mistakenly batched the samples wrong and didn't run them in time.

3rd collection of DBP samples for IDSE monitoring collected at sites 3 and 7 on November 4, with the plant operating under normal conditions ( discontinued pre-chlorination and coagulant added to the water).

Test results for 3rd collection of DBP samples:

11.04.22 at Sample site 7
TTHM 0.0264 mg/L
HAA5 0.0566 mg/l

11.04.22 at Sample site 3
TTHM 0.0258 mg/L
HAA5 0.0424 mg/l

Test results for 1st collection of DBP samples:

09.27.22 at Sample site 7
TTHM 0.0562 mg/L
HAA5 0.1050 mg/l

09.27.22 at Sample site 3
TTHM 0.0548 mg/L
HAA5 0.0955 mg/l

Next steps: DWS will make a determination on whether additional IDSE samples are needed (quarterly) or just go directly to regulatory monitoring of site 7, the site with highest for TTHM and HAA5.
 
Associated Alerts: CHEM9922 - 10/05/2022 - TOTAL HALOACETIC ACIDS (HAA5)


More information for this water system: SDWIS ID 3934
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