A sustained ammonia discharge from an apartment complex upstream has released…

A sustained ammonia discharge from an apartment complex upstream has released nitrogen at staggering multiples of its permitted load—12 times over last fall, then 5 times over again this spring. The nitrogen coursed through the local stream network, where none of the 23 assessed water bodies now meet their designated uses. The ecological outcome was compounded by hydrology: a foot of rainfall in four days over the last week of June flushed that accumulated load downstream just as summer heat began stripping dissolved oxygen from already-stressed reaches.

The Ron Campbell Apartments wastewater discharge represents a textbook case of how episodic pollution collides with seasonal stress. Nitrogen loading under cool winter conditions might be absorbed or denitrified in-stream; the same load hitting in June, with rising water temperature and diminishing re-aeration, becomes acutely toxic to fish and invertebrates dependent on oxygen. The rapid gage height rise—from 3.49 to 4.41 feet over four days—would normally have been a cleansing event, but instead it mobilized months of stored contamination all at once.