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: Repeat +TC DETAILS: Regarding repeat +TC sample, see contact report previous to this. I spoke to Matt at Tigard today because they reported a chlorine residual for their two triggered well samples. Per Matt, the sample for Well #2 was collected post-chlorination because there is no raw water sample tap. I told him that we are going to invalidate that sample and asked him to retest prior to chlorination-- he indicated he would do that today by shutting off the chlorinator and make sure there was no residual prior to sampling. I spoke to him about the need for installing a dedicated raw water sample tap and he indicated that could be done-- I asked him to let me know when that was completed. Note: the sample from ASR #2 shows a residual because the surface water injected into the well has a chlorine residual so it is not surprising that the water pumped out holds a slight residual. ACTION NEEDED: Resample the raw water at Well #2. Install dedicated raw water sample tap at Well #2. | ||
Associated Alerts: | COLI13231 - - |