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Sep 10, 2020 · This study concluded waste water spike soils continued to be a source of e. coli, HF183 and PMMoV even after 4 months. Slide 22 shows how fast these markers decayed since contamination. After 60 days there was less than .001% relative to day 1 whereas PMMoV was much slower to die off, and HF183 was somewhere in the middle. ................
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