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Conclusions and Recommendations

The main goals of this plan are to provide a guide to meet storm water regulations for the current state of the University of Wisconsin Oshkosh campus as well as proposed growth.  The regulations that will be of concern for the UW Oshkosh campus are NR 116, NR 151, and NR 216.

NR 116 governs future development in floodplain areas.

NR 151 governs storm water requirements for future building projects including reconstruction projects and new development.

NR 216 requires the UW Oshkosh campus to obtain a WPDES permit which requires that criteria be met in six categories:

  • Public Education and Outreach
  • Public Involvement and Participation
  • Illicit Discharge Detection and Elimination
  • Construction Site Pollution Control
  • Post-Construction Storm water Management
  • Pollution Prevention

In order to meet the requirements of NR 151, new building projects will be required to have storm water management efforts that remove TSS and in some instances reduce peak flow rates.  To the above requirements, it is recommended that biofilters/bioretention devices, rain gardens, or other proprietary devices be used in close proximity to the construction project to help meet NR 216 requirements.

In order to meet NR 216 requirements, programs that incorporate public educations and outreach, public involvement and participation, and illicit discharge detection and elimination will need to be implemented.

The most intensive area of NR 216 to meet will be the need to ultimately reduce TSS runoff by 40 percent on an average annual basis by the year 2013.

In order to meet these requirements, the following recommendations have been made:

  • Construction of bio-filters throughout existing parking lots, sidewalk areas and roofs.
  • Construction of drainages swales with native vegetation to route drainage instead of having direct connections to storm sewer from impervious surfaces.

Because of the large areas of green space, the most cost effective BMP’s  would be biofilters/bioretention devices, rain gardens and drainage swales to treat water  instead of ponds, porous pavements, and proprietary devices to meet the 20 percent and 40 percent TSS removal requirements. However, these BMP’s may be a viable option for future development governed by NR 151 requirements.

by linnm37 — last modified Jun 18, 2013 03:34 PM