Comment

Total Phosphorus discharges would have to come down to 0.03 mg/L to meet all discharge requirements.

Response

False. Class A-1 effluent requirements do not regulate phosphorus at all. 0.03 mg/L of TP is the criterion for the Gallatin River, but only during the nutrient season (July 1st – September 30th), and dilution credits can be claimed to meet this criterion at the end of a mixing zone.

Comment

“Through the Big Sky Sustainable Water Solutions Forum (BSSWSF), the greater Big Sky Community expressed clear goals favoring innovative water resources management… …In stark contrast, the Report’s emphasis on WRRF Upgrades only as necessary to achieving the ability to discharge to surface waters lacks consideration and is troubling considering the two years invested in the BSSWSF by the District’s General Manager and severage District Board Members…”

Response

1. The BSSWSF focused on snow-making as one of the avenues for the District to achieve effluent water balance. As the report explains, that alternative is not in the District’s control.

2. The statement “The Report’s emphasis on WRRF upgrades only as necessary to acheiving the ability to discharge to surface waters.” Again, this indicates that the authors of the conservation group letter did not read the full report, especially the three chapters on snowmaking, subsurface disposal, and additional irrigation (respectively).

3. The Gallatin River Task Force has formally voted to support Phase 1.