Final Triclopyr Test Results

Earlier this week we sampled two locations in the lake and submitted them to the lab.  The concentration of triclopyr in the lake is now about 10 parts per billion.  The warning signs around the lake will have to stay up for the full 120 days, until the end of September.

The following table shows these results, as well as those for all of the other tests this summer.  The concentrations are expressed in parts per billion.

Applied June 3rd June 9th June 15 June 21 June 28 July 28 Aug. 30
0 days 1 day 7 days 13 days 19 days 26 days 56 days 89 days
Site 1 1500 202 121 38
Site 2 1500 930 127 66 13 11
Site 3 1500 510 113 98 59 50
Site 4 2000 85 47
Site 5 2000 160 39
Site 6 2000 145 42
Site 7 2000 123 93 65 42 17 10
Site 8 2000 332 88 40
Site 9 0.0 15 30
Site 10 0.0 31 0.0

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