09-19-1994 Planning Packet - Laserfiche WebLink

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Zoning F*ile 01962 September 15, 1994 Page 4 A. The scwap treatment system serving the residence at 825 Old lA>ng Lake is located diTposa[ according to City records, in an area that is intended for spoils B. If this residence is intended to remain in use. alternate drainfield sites must be Identified and presersed before the City will accept this as a viable spoils disposal C. Applicant and property owner are advised with the proposed spoils dispt>sal. any area covered with even 1 * of fill will no longer be suitable for drainfield sites should there be a future intent to develop this property. D. The area south of the driveway for 825 Old Long Lake Road below the existing 964 contour mav in fact be a wetland if delineated under the WCA rules, and appears as wetland on the new City topographic maps. It is staffs opinion that this area must be investigated further before the City should consider it as a viable disposal site. E. /\n additional concern may be the reintnxluction of nutrients directly into the watershed (albeit upstream) if this is a wetland. This wetland appears on the NWI maps as a PEMCD (palustrine emergent seasonally flooded partially drained/ditched wetland). 50,000 cu. yds. of material is appro.ximately 5,000 10 yd. dump truck loads. To comprehend the magnitude of this project, consider at 20 loads per hour and 8 hour days, the project will move dirt for 31 working days. There has been discussion about a portion of the spoils being hauled off site. Such an occurrence would bring up the obvious traffic concerns, capacity and load limits of our existing City roads in the area, spillage, etc. It is likely that there will a significant number of trips just crossing Old Long Lake Road to get to the south disposal site. Also, the advisability of taking dump trucks on East Long Road headed north towards Spring Hill Road is questionable due to the narrowness of that road. Staff would recommend that any off site disposal be subject to specific controls as part of a developer’s agreement to be e.xecuted by the property owner. Water Quality In 1974 the City contracted with Eugene A. Hickock & Associates to complete a study known as Orono ’s Surface Water Management Plan, 'fhat study reviewed each of the watersheds and subwaiersheds in the City and identified stormwater quantity and quality requirements and capabilities for each watershed. This document is on occasion used by staff as a reference when review ing projects of a magnitude to have a significant impact on a watershed and ultimately impact on lake water quality.