Re: info on Lot 1 and outlot A - Laserfiche WebLink

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Senn Lots Analysis Memo 4-3-03 Page 3 the site were on the Orono 1974 inventory map, they do not fall under the category of"non-City- protected wetlands". Therefore, they are subject to a delineation and formal re-determination of their boundaries, which may severely impact the dry buildable area. III. Summary of Impacts on Senn Lots 1. We do not know whether either of Lots 1 or 2 contain 2.0 acres of contiguous dry buildable area, and will not know until their wetlands are delineated. 2. If either of Lots 1 or 2 contain less than 2.0 acres of contiguous dry buildable area, a lot area variance will be required; if they are significantly less than 2 acres, buildability may be in question. 3. The OHWL along the various stretches of the creek has not been officially determined, and must be determined (by applicant's engineer subject to City Engineer approval) to determine the points from which setbacks should be measured. The sketch by staff only estimates the 100' setback from OHWL for structures. If the 970' contour is the OHWL for Lot 1, its tested septic sites would be in violation of the required setbacks which came into effect in 1992. 4. The original approvals to construct a driveway within Outlot A paralleling the creek, and to construct a creek crossing, are no longer valid, because the driveway and creek crossing were never constructed and new, more restrictive regulations have since been adopted which would make such construction a violation of current codes. 5. The specific issues with the driveway are: a) It would be within 75' of the OHWL of the creek where no hardcover or grading is allowed per 10.56 Subd. 16 (J); b) Portions would likely be within a delineated wetland or within 26' of the wetland, requiring variances from the City (any variance for this work granted with the final plat approval would by definition have expired within one year of that approval if not used). C) Grading and filling in or near a wetland, and crossing of the creek, are also subject to WCA regulations administered for Orono by the Minnehaha Creek Watershed District, and variances to their regulations would likely be required. As a related issue, note that the 1990 subdivision approval required that there be only one access to Watertown road for the two lots, i.e. a shared driveway is required.