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Roseville Public Works, Environment and <br />Transportation Commission <br />Agenda Item <br />Date: October 26, 2010 Item No: 8 <br />Item Description: Polycyclic Aromatic Hydrocarbon (PAH) Discussion <br />Background: At the September 28, 2010, PWETC meeting, the Commission requested that staff <br />provide additional information about what is being done to address the issue of PAHs in pond <br />se invents. <br />• Attached is the model ordinance that has been adopted by 5 different metro communities. <br />• On September 20, 2010, the Minnesota Pollution Control Agency (MPCA) announced the opening <br />of the Fiscal Year (FY) 2011 Environmental Assistance Grant Round with a category for PAH <br />Contaminated Stormwater Pond Sediment. The focus is to provide assistance to municipalities for <br />the removal and management of Stormwater pond sediments contaminated with PAHs. These <br />grants are only available to Cities that have banned PAHs through an ordinance and the deadline is <br />November 1, 2010. The City of White Bear Lake is submitting a grant application to implement a <br />pilot project. Their idea: integrate the sediment into on- site soils, effectively eliminating the need <br />to haul the material to a landfill. They propose to monitor and test the resulting material to <br />determine the feasibility of on-site disposal. <br />• The MPCA is working on a report regarding the risk of the Level 3 material. This should be <br />released next year. The scope of this report is to present findings on the stability of PAHs present <br />in the material. <br />• Rice Creek Watershed District is starting their Oasis Pond clean out project in November. The <br />sediments in this pond tested as Level 3 material. The bid price for the hauling and disposal of this <br />sediment was $37.62/ CY. The total estimated cost for sediment removal is $70,838.46, or 50% of <br />the total project cost, $141,589.61. <br />• Capitol Region Watershed District is working on plans to remove sediment and make water quality <br />improvements to William Street Pond. These sediments have also tested out as being Level 3. <br />Recommended Action: <br />Discuss material provided <br />Attachments: <br />A. MPCA "Contamination of Stormwater Pond Sediments by PAHs in Minnesota": (133 pages) <br />httpa/www.le~.state.mn.us/flocs/2010/other/100587.pdf <br />B. Draft Ordinance Prohibiting The Use And Sale Of Coal Tar-Based Sealants <br />C. USGS: "Parking Lot Sealcoat: A Major Source of PAHs in Urban and Suburban Environments. <br />(attached) <br />D. Coal Tar Based Seal Coat for Driveways and Parking Lots memo <br />