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Ms. Michele McPherson 411 November 20, 2001 Page Two 4. Currently, the development only shows one access point, that being in the northeast corner onto CSAH 12. This location will require a permit from Sherburne County and any improvements that Sherburne County deems necessary. The second access point from this residential area will be onto Tyler Street from the property immediately south of Trott Brook Farms South. A preliminary sketch plan of this property showing the access onto Tyler Street has been submitted. The proposed access onto Tyler Street will be immediately opposite the most southerly access to the industrial development on the west side of Tyler Street. This raises the question of how much of Trott Brook Farms South could be developed with only one access. Current zoning requirements would indicate that the longest cul- de-sac allowable is 700 feet. Perhaps a temporary access onto Tyler Street for emergency access only could be developed either on the Trott Brook Farms South property or somewhere on the property south of this development through the acquisition of a temporary easement. There will need to be ongoing discussions relative to this issue with City staff prior to any development of Trott Brook Farms South. 5. If this development does not access Tyler Street in the southwest corner adjacent to the access from Elk River Crossing, the left turn lane that was constructed on Tyler Street, anticipating this connection, will need to be removed by these Developers. In addition, • there is a driveway for a field access into this property off of CSAH 12 just east of the Black property. This will also need to be removed as part of the development of this property. 6. Review of the grading plan indicates there are some minor issues relative to the steepness of some of the driveways and other minor issues. We will continue to work with the Developer's engineer to rectify these issues. 7. The storm drainage calculations have been submitted, reviewed, and revised and submitted again. We are continuing to work with the Developer's engineer on the storm drainage issues. The storm drainage calculations for this development are rather complex because it is part of a much larger drainage area draining property north of CSAH 12 and east of Tyler Street through the same storm sewer system. In order to not exceed the 5.0 CFS maximum discharge from this site, a detailed analysis of the drainage from the site will need to be prepared and analyzed relative to the time of the peak runoff from the site. We are continuing to work with the Developer's engineer on this issue. If an adequate storm drainage system utilizing the Tyler Street drainage system cannot be designed, the ponds within the development will need to get slightly larger to restrict the peak discharge to 5.0 CFS. This may have the effect of reducing the total number of units proposed. 8. The sanitary sewer system to serve the proposed development consists of an extension from the trunk line in Tyler Street to the southwest corner and laterally sized sewer lines throughout the development. Water service for the proposed development will consist of • a connection to a stub constructed by the Elk River Municipal Utilities near the northwest Howard R. Green Company Ltr 11-19-01 McPherson[1]rev CONSULTING ENGINEERS