Agenda - Council - 04/12/2016 - Laserfiche WebLink

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Review File: The Woodlands 2nd Addition Final Sanitary Sewer, Watermain, Storm Sewer and Street Plans Engineering Review April 7, 2016 Page 2 of 4 The grading for 159th avenue will alter the connection to the county ditch and may change the FEMA elevation. 13. The emergency overflow elevation for each water quality pond must be one foot lower than the lowest adjacent grade of the building structures. 14. The maximum slope must not exceed one foot vertical to three feet horizontal. The minimum slope on all lots must be 2.0%. G3 — 1. The grading on lots 1- 3 east of Sapphire Street is too flat, especially considering that tree protection fence prevents grading to the back property corners. These grades must be revised. A trail must be constructed along Variolite Street. This is shown on the plans as existing. The labeling must be updated. All trails in the City of Ramsey are 10 ft. wide. Provide plans with cross sections at 50 ft stations on the proposed trail. These plans were requested with the first phase of The Woodlands and were not submitted. Plans prepared by James R. Hill, Inc.: The remainder of the comments are on the 12 sheets prepared by James R. Hill, Inc. Continuation notes must be added plan view for all sheets indicating the adjacent page. Cover Sheet: The area tabulation leaves 14.18 acres unaccounted for. Erosion and Sediment Control Plan: We offer the following comments: 1. Silt fence must be added at all pond outlets and weirs. 2. A legend is required on each sheet showing all symbols used on that sheet. 3. The SWPP Sheet (C2.2) is lacking detail as required by the General Stormwater Construction permit. We have attached an example and you may refer to the Minnesota Pollution Control Agency website for more information. Sanitary Sewer and Watermain Plans We offer the following comments: 1. Align plan view stationing with profile view stationing. 2. Break lines under labels for readability. Move leader lines off from lot lines. 3. The pedestrian ramps at Lot 1, Block 1 and Lot 4, Block 2 must be aligned. 4. There is a dark symbol on certain storm sewer structures. The color must be changed to a background color. 5. Revise note 3 to include class 53 pipe. 6. Revise note 5 to read "Watertight wrap or approved equal must be installed with the casting and rings of all sanitary manholes. 7. Add note 7. "All 6" and smaller DIP shall be Class 53. 8. Provide additional information for Sapphire Street sanitary sewer, i.e. invert of cleanout and Engineer to verify invert in EX MH 5. 9. Services shall end 10 feet beyond the edge of sidewalk. Services on the non -sidewalk side shall end at the property line.