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OHA Drinking Water Services
Contact Report Details |
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| PWS ID: | OR41 94601 | ||
| PWS Name: | RIVERSIDE RV PARK | ||
| Who Was Contacted: | Michael Kelsey | ||
| Contact Phone: | 503-263-3000 | ||
| Contact Date: | 04/06/2021 | ||
| Contacted By: | NUSRALA, JAMES (DWP) | ||
| Contact Method/Location: | Phone | ||
| Assistance Type: | OTHER REGULATORY - Follow up to arsenic MCL exceedance | ||
| Reasons: | Arsenic |
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| Details: | Michael briefed me on the follow up to the running annual average for arsenic of 0.013 mg/L, that exceeded the 0.010 mg/L MCL, for the 4-quarter period ending with 2nd quarter 2020. -meeting with circuit rider in September was helpful to frame what questions to ask as systems selects proposed treatment alternative. -When Mike reached out to Shiloh Water to discuss treatment plans, Shiloh had a question if treatment was really needed for such a slight exceedance of the MCL -System has run speciation tests on arsenic with Shiloh to determine most of the arsenic is arsenic V rather than arsenic III. I reminded system that even with subsequent test results below the MCL, treatment is required when the 4-quarter running annual average exceeds the MCL. Mike will contact Shiloh again to get help putting together a plan submittal for treatment for DWS review. |
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| Associated Violations: | Viol #903496710, 04/01/2020 - 06/30/2020: ARS - Chemical MCL based on Average of Samples |
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