Quarterly Environmental Compliance Report

1
Quarterly Environmental Compliance Report

• Presented to the Environment Committee
• April 28, 2009

Mary Gail Scott Manager, Environmental Compliance
2
WWTP Effluent Performance
Mass discharge quarterly totals Jan Mar 2009
3
NPDES Permit Compliance Discharge Exceedances

•   

Plant
Exceedances/Calendar Qtr
Oct - Dec 08
Jan - Mar 09
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
Blue Lake Eagles Point Empire Hastings Metro Rosem
ount St. Croix Valley Seneca
March 2009 marks 26 months of continuous
compliance with discharge limitations of MCES
facilities
4
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

5
EC Updates

• Mercury emissions at the Metro Plant continue to
  be very low.