05/11/2016 P&Z Packet - Laserfiche WebLink

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Ms. Katie Larsen April 06, 2016 Page 7 b. Rule D: Erosion and Sediment Control c. Rule E: Floodplain Alteration d. Rule F: Wetland Alteration e. Rule I: Drainage Systems 5. US Corps of Engineers Section 404 - Individual Permit 6. MDH for Water System 7. MCES and MPCA for Sanitary Sewer RECOMMENDATIONS 1. Consider modifying CL grades of Street A at 21" Avenue match to reduce high/low point undulation. 2. Add catch basin at intersection of Drive B and Street A (no valley gutters along Street A) 3. Add catch basins/storm sewer on Street M at station 2+70 4. Add catch basin at intersection of Street E and Street N 5. A more detailed review of grades in townhome area to follow 6. Adjust HP on Street S to 2+00 to reduce catch basin spacing 7. Move catch basins on Street Q to 2+50 to reduce catch basin spacing 8. Adjust HP on Street B to 36+00 to reduce catch basin spacing 9. Label % grades on all drainage swales (1% min. - 2% preferred) 10. Add catch basin on Street A at 9+50 11. Detailed grades needed for roundabout review 12. Add catch basins on Street E at 6+50 to reduce catch basin spacing 13. Add catch basin at intersection of Street E and Street N 14. Add catch basins on Street E at 14+00 to reduce catch basin spacing 15. Adjust low point on Street B to 11+75 to reduce catch basin spacing 16. Shift low point to 2+00 on Street K 17. Add catch basins to Street B at 21+30 18. Check drainage at the intersection of Street P and Street B 19. Add catch basins to Street C at 29+50 (no doubles needed at 28+00) 20. Average out grades on Street C 43+50 to 56+00 (or add CB's) 21. Add catch basins at the intersection of Street C and Street D 22. Shift high point to intersection of Street D and Street V 23. Review drainage at the intersection of Street D and Street W (CB needed?) 24. Review drainage at the intersection of Street C and Street H (CB needed?) 25. Shift high point to intersection of Street F and Street C 26. Add catch basins at intersection of Street G and Street H (4+50) 27. Shift catch basin at the intersection of Street F (6+25) and Street G 28. Shift high point to intersection of Street G and Street H (19+50) 29. Shift high point to intersection of Street F (13+60) and Street G 30. Air relief valves shall be located at all high points in the system. Please provide elevations for all watermains to evaluate air relief valve positioning. 31. There shall be a ten -foot horizontal and 18-inch vertical separation distance from all sanitary and storm sewer lines. 32. In addition to those valves already included in the plans, valves shall be added in the following locations: a. Along Street M; KA02029-82044dn in\Docs\20160516 Engineering Review Lino Lakes-Mattamy.docx