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OHA Drinking Water Services
Contact Report Details |
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| PWS ID: | OR41 91805 | ||
| PWS Name: | ELMIRA HIGH/ELEMENTARY | ||
| Who Was Contacted and Phone: | Jeff Thiessen (541) 935-2253 | ||
| Contact Date: | 06/10/2008 | ||
| Contacted By: | PARRY, BETSY (REGION 2) | ||
| Contact Method/Location: | Field | ||
| Assistance Type: | OTHER REGULATORY - REGULATORY ASSISTANCE | ||
| Reasons: | Operations Chlorine |
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| Details: | SUMMARY: Operations review with new DWP staff person for this area DETAILS: Due to the recent alert for zero chlorine residual at his other two school systems (not this one - alert samples were taken May 28 at Central Elem and Fern Ridge), Casey Lyons and I met with Jeff Thiessen to review all his water systems and recent changes. Jeff has been tweaking the water systems at his three school systems since he took over as the operator last year. He has installed new chemical pumps and changed the way he is dosing the chlorine. Today, we took chlorine and pH readings at the wellhouse (CL 1.2, pH 8.4), in the HS office work room (CL 1.1, pH 8.4), the HS kitchen sink (CL 1.1, pH 8.4), and at the Elem staff bathroom sink (CL 1.2, pH 8.4). He needs to maintain a minimum of 0.69 CL and 7.2 pH for this PWS, so now it is running quite high for both. Jeff may switch back to injecting a dilution of the chlorine solution (as his predecessor had done), rather than his recent attempt at directly injecting the 12.5% chlorine product. A diluted chlorine solution (e.g., 50-50) may allow him to bring the chlorine level down a bit closer to his goal. ACTION NEEDED: Continue daily chlorine monitoring, especially as the students leave for summer and stop using the water, and as Jeff switches back to injecting a diluted chlorine solution | ||