Minnehaha Creek Watershed Creek Watershed District 2015 RECOMMENDED PROJECT ... Project Management Property or Easement Acquisition ... Supplies/Equipment Meetings/Seminars Printing Publishing
Post on 19-Apr-2018
Minnehaha Creek Watershed District 2015 RECOMMENDED PROJECT WORK PLAN PREPARED BY:_Becky Houdek DATE: July 17, 2014_ Project Halsted Bay Internal Loading (3144) Location Halsted Bay, Six Mile MarshLake Minnetonka and Six Mile Creek Subwatersheds Description Background: The Districts monitoring data and modeling of the Six Mile Creek system indicate a large internal load in the lower portion of Six Mile Creek, particularly in Parley and Mud Lakes, as well as in Halsteds Bay itself. For this reason, the CIP recommended an investigation of an alum injection system to treat the discharge from Six Mile Creek before it enters Halsted Bay as well as internal load management within Halsted Bay. A feasibility study for these two projects was completed in November 2013 in partnership with the City of Minnetrista. The City signed a MOU with the District documenting their intent to partner with the District on these projects. In April 2014, the findings and recommendations of the Six Mile Creek Diagnostic Study were discussed with the Planning and Policy Committee. The study reaffirmed the substantial contribution of nutrients from internal loading in the lower portion of the watershed, estimating that approximately fifty percent of the loading to Halsted Bay is coming from the outlet of Mud Lake with another forty percent coming from within Halsted Bay itself. It was summarized that a combination of management strategies would be required in order to address the impairment of Halsted Bay: (1) internal load management via alum dosing; and (2) shallow lake management within Parley and Mud Lake. Given the time period, cost and uncertainty associated with shallow lake management, the study recommended an integrated strategy that combines alum dosing of Halsted Bay with alum injection of Mud Lake discharge, while managing Parley and Mud Lakes for long term ecological restoration. The Committee discussed the balance between immediate improvements in water quality coupled with long term restoration strategies. Specifically, it was noted that immediate improvements in water quality may garner broader support for long-term ecological restoration needed within the subwatershed. Given the scope of management required, the Committee agreed that future policy discussions would be required to continue focusing management strategies into an achievable implementation framework. 2015 Budget: In 2014, the District levied or transferred in $162,805 for design of the alum injection system. Following preliminary discussions with the Policy and Planning Committee regarding the timing of upstream versus downstream treatment and the substantial costs of such a project, it was put on hold until a more comprehensive implementation plan for the system is developed. These monies will be carried over into 2015 and held assigned until the implementation plan and funding strategy is established. Need Halsted Bay is impaired for nutrients and required the largest load reduction of any water bodies in the District (based on TMDL studies). Monitoring data and modeling of the Six Mile Creek system indicate a large internal load in the lower portion of Six Mile Creek, particularly in Parley and Mud Lakes, as well as in Halsteds Bay itself. Outcome Address the nutrient impairment for Halsted Bay through alum dosing of Halsteds Bay and upstream offline-alum-injection system in combination with shallow lake management of Mud and Parley Lakes. Schedule TBD Budget/Levy History Tax Grants & Transfer Year Budget Revenue Other Rev. Expenditures in/out Carryover 2013 $0 $0 $0 $0 $51,788 $51,788 2014 $155,000 $111,017 $0 ($1,000)* $0 $161,805* 2015 $161,805 $0 *Estimated amounts. Recommended 2015 Budget and Levy Budget: $161,805 Levy: $0Detailed Budget: Budget Planning and Policy Development Contracted Services Survey/Data Collection Engineering/Consulting Equipment/Supplies Meetings/Seminars Maintenance Plan Dev. Legal Other/Miscellaneous sub-total $ Project/Program Implementation Training Contracted Services $161,805 Project Management Property or Easement Acquisition Engineering Supplies/Equipment Construction Landscaping/restoration Legal Meetings/Seminars Monitoring/Lab Analysis/Inventories Other/Miscellaneous Permit Research Permit Acquisition Operations/Maintenance Grants/Awards/Loans Given sub-total $161,805 Communications-Education-Stakeholder Involvement Training Supplies/Equipment Meetings/Seminars Printing Publishing Postage Dues/Subscriptions Other/Miscellaneous Computer Services Contracted Services Engineering/Consulting Legal Construction Teacher Stipend Grants/Awards/Loans Given sub-total $ TOTAL $161,805
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