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OHA Drinking Water Services
Contact Report Details |
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| PWS ID: | OR41 00878 | ||
| PWS Name: | TIGARD, CITY OF | ||
| Who Was Contacted and Phone: | Jennifer Joe (503) 718-2599 | ||
| Contact Date: | 09/05/2014 | ||
| Contacted By: | BAIRD, GREGG (REGION 1) | ||
| Contact Method/Location: | Office | ||
| Assistance Type: | WATER QUALITY ALERT RESPONSE | ||
| Reasons: | Coliform N/A |
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| Details: | SUMMARY: Routine +TC DETAILS: On Thursday 9/4/14 Jennifer reported that a routine sample collected Tuesday 9/2/14 at 12797 SW Da Vinci Ln came back positive for total coliform/absent for E. coli. Three repeats were collected Wednesday 9/3/14-- the upstream/downstream samples were absent, however the original site tested positive for total coliforms again. On Thursday 9/4/14 the system requested invalidation of the original sample under OAR 333-061-0036(6)(j)(B) since only the routine and repeat at the same site were positive and all other samples negative indicating the sample site itself is suspect. The request is being reviewed and approval is pending. Two wells were running at the time of the distribution positive (ASR #2 and Well #2) so raw source water samples were collected from those wells on 9/3/14 under the triggered monitoring requirements of the Ground Water Rule. ACTION NEEDED: Hold for decision on request to invalidate (Note: request approved 9/12/14). If denied, repeat sampling will need to occur as soon as possible. If accepted, system needs to ensure adequate number of routine samples are collected (at least 60) in September to make-up for the sample that was invalidated. | ||
| Associated Alerts: | COLI13226 - - |
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