AMD&ART: The Project, 1994 – 2005

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The Treatment System

Pond 6

AMD&ART: The Project, 1994 – 2005
AMD&ART: The Project, 1994 – 2005

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The water from Pond 5 flows through an aerator and into the final settling pond. Exposed again to oxygen, the iron oxide precipitates out and the water leaves the pond free of metals and at a neutral pH. The water exiting this pond is clean water, the same water that enters the system at a pH of approximately 2.8 and exits now at a pH of about 6.5.

Water Quality at Vintondale Treatment System

Location Date Flow (GPM) pH Alkalinity to pH 4.5 (mg/l as CaCO3) Acidity to pH 8.2 (mg/l as CaCO3) Fe (mg/l) Mn (mg/l) Al (mg/l) Sulfates (mg/l) Suspended Solids (mg/l)
Pond 6 Outflow 6/15/2004 35 6.1 15 36 3.47 2.57 < 0.50 593 12.0
Pond 6 Outflow 4/4/2005 280 6.2 16 10 2.45 2.80 < 0.50 590 9.0
Pond 6 Outflow 1/10/2006 45 6.3 14 18 2.50 2.16 < 0.50 455 < 3.0

Monitoring Data from Mine No. 3 Discharge
Table prepared by Kiski-Conemaugh Stream Team

AMD&ART: The Project, 1994 – 2005

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