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Michigan Section 303(d) List
Total Maximum Daily Load (TMDL)



Development

Waterbodies were prioritized for TMDL development considering the following factors:

  • Michigan's five year rotating watershed approach
  • EPA's direction to have all TMDLs developed in 8-13 years
  • Available resources to complete TMDLs
  • Data availability
  • Complexity of problem
  • Ability of water program to address the TMDL issue
  • Presence of active projects such as those conducted under Section 319 of the Clean Water Act for nonpoint source activities, and also under Part 201 of State Act 451 for site remediation


Schedule


A schedule for TMDL development for the next 13 years was developed based on these factors, assuming EPA approval of the Michigan TMDL list. This schedule will address all 292 TMDLs for development in a 13 year timeframe. However, Michigan presently does not have the resources available to complete all the TMDLs listed at the scheduled date. To meet this schedule will require additional resources for TMDL development.
 
Prioritization

The breakdown by year of number of TMDLs to be developed is:
 
  • 1999: 29
  • 2000: 8
  • 2001: 17
  • 2002: 6
 
  • 2003: 16
  • 2004: 21
  • 2005: 23
  • 2006: 24
 
  • 2007: 19
  • 2008: 20
  • 2009: 35
  • 2010: 61
 
  • 2011: 61
     
 


Exceptions
Most of the TMDLs were scheduled following Michigan's five year rotating watershed approach. There were some exceptions to this for the following reasons:

  • EPA has offered to take the lead on developing the mercury TMDLs for the mercury lakes, and requested that these lakes be scheduled at the end of the process due to the complexity of the problem. This resulted in 59 lakes scheduled in year 2011.
  • Waterbodies affected by Combined Sewer Overflows (CSOs) were scheduled for TMDL development based on the scheduled implementation of the approved Long-Term CSO Control Programs for these facilities.
  • Waterbodies primarily affected by contaminated sediments will be covered by a Remedial Action Plan for the site instead of a TMDL. Several adjustments were made to account for when these plans would be completed.
  • TMDLs were coordinated with active Section 319 projects for several sites to allow the momentum for these projects to continue.
  • TMDLs for two problematic chemicals (PCB and chlordane) were scheduled in the late years to allow the development of additional information at low level analysis.


Status of 1996-1998 TMDL Development
Three TMDL waterbodies that were on the 1996 TMDL list were addressed in the 1996-1998 timeframe. These waterbodies include Ford Lake/Belleville Lake, Monguagon Creek, and an unnamed wetland in Marquette County. For the Ford Lake/Belleville Lake waterbody, a phosphorus TMDL was completed in 1996 and approved by EPA. For Monguagon Creek, a Remedial Action Plan was developed and approved by MDEQ and implementation completed in 1997. For the unnamed wetland, a Remedial Action Plan was developed and approved by MDEQ for nickel and implemented in 1997. These actions resulted in removal of these three waterbodies from the TMDL list.

In addition, the status of the Boardman Lake TMDL was reviewed. The available information indicates that Boardman Lake now meets WQS due to upland remediation of a contaminated soils site. Therefore, this waterbody was removed from the TMDL list.

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