06-12-2003 Planning Comm. Agenda

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Honorable Chairman and Planning Commission June 5, 2003 Page Two Drainage 1. No drainage calculations were provided in the submittal package. Drainage calculations should be reviewed prior to approval. 2. An elevation should be shown on the emergency overflow swales from both ponds. In addition, the emergency overflow paths must be shown from all low points to indicate drainage patterns. 3. Top and bottom wall elevations should be shown for all retaining walls proposed on the site. 4. All retaining walls over 4 feet high must be tiered. The walls should be tiered at equal steps, i.e. a 4-foot wall would require 4 feet of horizontal clearance prior to the start of the next wall. 5. A drainage Swale should be provided along the west lot line of Lot 1 Block 2 to ensure drainage is not directed onto the adjacent property. 6. The drainage swales along the lot lines between Lots 10 & 11, 11 & 12, and 12 & 13 should be extended into the front yards to ensure all drainage will be kept within the drainage easement along the lot lines. 7. Drainage swales should be provided along the lot lines between Lots 3 & 4, 4 & 5, ands&6. 8. A drainage Swale should be constructed along the lot line between Lots 14 & 15 to prevent drainage from Lot 15 discharging onto Lot 14. In addition, a more defined Swale should be graded between Lots 12 & 13. 9. The garage floor elevation shown for the home on Lot 14 is 883.5 however; the highest contour through this lot is only an 880. Adjustments should be made to the lot grading or the garage floor elevation shown. 10. The plan should indicate that Class 4 Rip Rap be used at all outlet flared end sections and a cubic yard quantity noted. 11. As previously requested, Preserve Trail should be centered within the obtained right of way. As shown, the Preserve Trail right of way is not 40 feet from the existing driveway on the east which is the minimum distance allowed by City Ordinance. Utility Plan 1. The hydrant and catch basins located within the St. Paul water easement should be moved to the east outside of the easement. 2. All 12 inch and 15 inch RCP storm sewer pipes should be noted as Class 5. 3. An 8" x 6" tee can be used for all hydrant leads instead of the 8 x 8 tees shown. 4. Storm water from the Preserve Trail should be directed to the west pond within the development to maximize storm water treatment through the wetland. 5. As shown, there is only a 1.5-foot build for STM MH-12. This structure is too shallow to actually be built and the inverts must be revised. 6. Details should be provided for the proposed guardrail along Preserve Court east of Preserve Trail. Details should also be provided as to the end treatment that will be used on the guardrail. C:\windows\TEMP\Itr 06-05-03 ping commission.tloc -33-