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pf07-002
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Planning Files
Planning Files - Planning File #
07-002
Planning Files - Type
Planned Unit Development
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devices such as tree protection fence, perimeter silt fence, rock construction entrances, construction <br />phasing, and timely stabilization of disturbed surfaces. <br />The MPCA, the Rice Creek Watershed District, and the Cities of Roseville and Arden Hills will have <br />final approval of all details pertaining to erosion control procedures. Because the Projects will be <br />monitored through the entire construction process, the adverse effects fram erosion and sedimentation <br />should be minimized. <br />17. Water quality: surface water runoff <br />a. Compare the quantity and quality of site runoff before and after the project. Describe permanent <br />controls to manage or treat runoff. Describe any stormwater pollution prevention plans. <br />The proposed improvements will increase the amount of impervious surjace on the campus, which will <br />increase the arnount of site runoff. The Storm Water Management Plan for the campus suggests several <br />mitigation rneasures, including the construction of permanent best management practices (BMP) <br />designed for water quantity control and quality treatment. These BMPs will be designed in accordance <br />with the MPCA NPDES General Stormwater Discharge Permit, Rice Creek Watershed District Permit, <br />and the ordinances of the Cities of Roseville and Arden Hills and will be incorporated into <br />development projects on campus as they are constructed. <br />These permits and ordinances require storm water basins with a permanent pool for water quuliry <br />treatment and a temporary pool for water guantity control. The temporary pool is used to reduce <br />proposed peak runoff rates for critical storm events. The Rice Creek Watershed District also reguires <br />runoff volume reduction BMPs be included with every project. The permanent BMPs that will be <br />utilized to meet the above criteria could include storm water basins, infiltration basins, ditches/swales, <br />green roofs, pervious pavements, and structural devices to treat and control runoff discharging from <br />the project area. <br />Each stage of development will meet the regulatory standards in place at the time orbuildzng permit <br />application. All stages of development will recognize the others to ensure that a comprehensive storm <br />water management plan is constructed for the site. Also, the College will work towards ensuring that <br />all direct, untreated discharges to Lake Johanna and Little Lake Johanna are eliminated once the <br />campus expansion is complete. <br />b. Identify routes and receiving water bodies for runoff from the site; include major downstream water <br />bodies as well as the immediate receiving waters. Estimate impact runoff on the quality of receiving <br />waters. <br />Storm water runoff is conveyed to hvo lakes adjacent to campus, Lake Johanna and Little Lake <br />Johanna. These lakes discharge into a county ditch that flows north towards Rice Creek, which <br />ultimately discharges into the Mississippi River. <br />As stated above, permanent BMPs will be constructed to address additiona! runoffgenerated from the <br />project area. These measures will provide the proper treatment and rate control to minimize potential <br />impacts to the downstream receiving water. <br />Please see the Storm Water Management Study attached to Attachment 7, the PUD Report, completed <br />by the College in 2007 for more detail. <br />18. Water quality: wastewaters <br />a. Describe sources, composition and quantities of all sanitary, municipal and industrial wastewater <br />produced or treated at the site. <br />The sources and composition of wastewaler- inclarde standard ma�nicipal waste. Ba.red on sewer usage <br />data_from 2005 and 2006, the average monthly setiver usage is approximately 1,793,486 gullons. Thi.s <br />assumes that 11, 521,836 gallons serves 1, h00 FTE students and the associated staff and faculty on <br />Y�,gE x <br />
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