OHA Drinking Water Services
Contact Report Details |
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| PWS ID: | OR41 91700 | ||
| PWS Name: | PIONEER VILLA | ||
| Who Was Contacted: | John Rossell | ||
| Contact Phone: | 541-466-3916 | ||
| Contact Date: | 05/18/2022 | ||
| Contacted By: | CIVIL WEST ENGINEERS, INC (DWP) | ||
| Contact Method/Location: | Phone | ||
| Assistance Type: | CIRCUIT RIDER ASSISTANCE | ||
| Details: | Background/Problem Identification: The circuit rider was contacted by Garren Friedemann regarding having a corrosion control method selected and in place if they exceed the MCL for lead again. Assistance Provided: The circuit rider received both requested rounds of WQPs from Garren. The results of the WQP tests are summarized and averaged in the table below: Kitchen Deli EP Kitchen Deli ep 4/25 4/25 4/25 5/9 5/9 5/9 avg Sp. 864 875 892 879 895 894 883 ~TDS 540 547 558 549 559 559 552 Alkm 160 160 160 160 160 160 160 Calcium 65.2 67.7 64.1 61.1 60.7 59.8 63.1 pH 7.2 7.2 7.1 7.4 7.4 7.6 7.3 Temperature - oC 15.0 16.0 15.0 14.5 16.0 15.0 15.3 DIC (Appx. B est.) 43 43 44 41 41 40 42 Target saturation pH = 7.5 Based on the available data and employing the EPA OCCT’s recommendations for corrosion control, flow chart 1b calls for using orthophosphate, unless there is iron or manganese present. Since Pioneer Villa uses a greensand filter, we assume any iron and/or manganese is either not present or reduced to a low level and that the recommendation of orthophosphate is valid. Follow-Up Actions Needed: The circuit rider is available to assist with selection of corrosion control equipment when required. Technical Reports to be Prepared and Expected Timeframe: N/A |
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