HomeMy WebLinkAboutCity Council Minutes 09-11-2007 SpecialAdopted Minutes
Special Council Meeting
September 11, 2007
Mayor Slavik called a Special Meeting of the Plymouth City Council to order at 5:30 p.m. in the
Medicine Lake Room of City Hall, 3400 Plymouth Boulevard, on September 11, 2007.
COUNCIL PRESENT: Mayor Slavik, Councilmembers Stein, Murdock, Hewitt, Black, Bildsoe,
and Willis.
ABSENT: None.
STAFF PRESENT: City Manager Ahrens, City Engineer Moberg, Water Resources Manager
Asche, and City Clerk Engdahl.
Draft Non -Degradation Plan
Greg Wilson, consultant with Barr Engineering, Water Resources Engineer Asche, and City .
Engineer Moberg discussed the proposed non -degradation report for Municipal Separate Storm
Sewer (MS4) General Permit (7108E) and answered the Council's questions. The City
conducted a load assessment and determined storm water discharges have expanded from 1988
to present for average annual flow volume (54%) and phosphorous (12%). Total suspended
discharges have decreased by 20%, which is likely due to a significant increase in water quality
ponding since 1988. Based on these results, the City is required.to complete a non -degradation .
report which will incorporate best management practices (BMP) to mitigate the effects of
increased average annual flow volume and phosphorous including BMPs to mitigate the effects
of new and redevelopment. Additionally, BMPs are required to address the negative impacts of
increased storm water discharge volumes having the potential to affect designated uses of
wetlands and streams. The non -degradation report must be completed before the City can
complete the Surface Water Management section of the Comprehensive Plan. The final report
would include specific recommendations for BMPs to address water volume and those
recommendations will be incorporated into the Surface Water Management Plan. By producing
BMPs that would reduce water volume and phosphorous loading to 1988 levels, the City would
be in compliance with the requirements of the Minnesota Pollution Control Agency. Approval
of the final report would be on the September 25 Councif agenda.
Adi ournment
Following a quarterly update with the City Manager, Mayor Slavik adjourned the meeting at
approximately 6:55 p.m. ?
Sandra R. Engdahl, Ci& Clerk