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filtration basins, holding ponds, vegetated s`vales, etc.) �vill protect help Trott Brook. This will <br />provide storage and treatment to waters prior to discharging into Trott Brook. <br />2.4.1.4 Contamination/Hazardous and Materials/Wastes <br />Pre-ProjectSste Condstlons <br />Minnesota Pollution Control Agency (MPCA) records do not indicate any current or former <br />contamination sites within or immediatelyr adjacent to the project aYea. The MPCA's What's In My <br />Neighborhood database of knotivn sites within pro�mityr of the pYoject aYea is illustrated on <br />Appendix A— Figure 10. TheYe was one documented petroleum leak within one-half mile of the <br />project site. This leak occurred at the Holzen Residence site located appro�mately 0.4 miles north <br />of the project site. This site was issued regulatoryT site closure on March 27, 2009. <br />The project proposer anticipates a minimal risk of encountering contaminated materials or <br />ground`vater during construction based on the lack of past land uses and due to geographic location <br />of the listed leak sites in Yelarion to the project area. PYoject construction and opeYation is not <br />expected to cause or exacerbate a pre-project contaminated condition(s); therefore, no measures are <br />planned to avoid, minimize, or mitigate adverse effects from e�sting contamination or potential <br />environmental hazards. <br />If potentially contaminated materials (or other environmental hazards) are discovered during <br />construcrion activiries, the project proposer/contractor `vill immediatel�T cease activities in the area, <br />then take appropriate and reasonable actions to contain and reduce the human <br />health/environmental risk prior to contacring the State of Minnesota Dut�T Officer, Sherburne <br />CountyT, and project proposer's representative. The development of a Contingency Plan or Response <br />Action Plan will be initiated if analyTtical results characterize the discovered materials as a regulated <br />contaminated waste. <br />Project-Related Generation/Storage ofSolsd Wastes <br />Solid and liquid wastes generated from construction materials and equipment are expected in <br />minimal amounts during periods of active construction. Wastes mayT include sediment laden <br />construction dewatering or tyrpical construction debris associated with Yesidential development <br />(lumber, siding, roofing materials, etc.).. The contractor will be required to immediatelyT haul offsite <br />and/or temporarilyT store and dispose (or rec�rcle) of all waste in accordance with MPCA regulations <br />and the NPDES Construction Storm`vater Permit. <br />Project-Related Use/Storage ofHazardous Materials <br />Hazardous materials (portable fuel tanks and lubricants) mayT be used for equipment operarions <br />during construction and temporarily placed onsite in sealed containers (at all times) and under <br />secured restricted access during non-working hours. These materials will onl�T be used during active <br />construcrion for refueling and maintenance of construcrion equipment To ensure that fuel spills do <br />not contaminate surface and ground `vaters, construction and maintenance activities would occur at <br />Yeasonable distances from surface wateYs and steep sloped aYeas. The contractoY will be YequiYed to <br />abide byT the Pollution Prevention Management Measures (Part N.F.2) of the NPDES Construction <br />