Presentation on theme: "A Clean Water Agency Quarterly Environmental Compliance Report Presented to the Environment Committee April 28, 2009 Mary Gail Scott Manager, Environmental."— Presentation transcript:
A Clean Water Agency Quarterly Environmental Compliance Report Presented to the Environment Committee April 28, 2009 Mary Gail Scott Manager, Environmental Compliance
Metropolitan Council Environmental Services WWTP Effluent Performance PollutantLimitation (lbs./qtr) Reported (lbs./qtr) % of allowable CBOD6,140,813470,7128 TSS4,853,858637,95613 Phosphorus151,75759,34539 Ammonia768,014248,96332 Mercury Flow 1.18 486 mgd 0.33 300 mgd 28 62 Mass discharge quarterly totals: Jan – Mar 2009
Metropolitan Council Environmental Services NPDES Permit Compliance – Discharge Exceedances Plant # Exceedances/Calendar Qtr Oct - Dec 08Jan - Mar 09 Blue Lake Eagles Point Empire Hastings Metro Rosemount St. Croix Valley Seneca 0000000000000000 0000000000000000 March 2009 marks 26 months of continuous compliance with discharge limitations of MCES facilities
Metropolitan Council Environmental Services WW Mercury Reduction Identified dentist offices as significant sources of influent Mercury Partnered with MN Dental Association to encourage use of mercury amalgam separators in central vacuum systems Virtually 100% participation has reduced mercury influent to WWTP by approximately 50% State-wide program extension through MPCA MOU
Metropolitan Council Environmental Services EC Updates 1.Mercury emissions at the Metro Plant continue to be very low.