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<br /> 178 E 9TH STREET | SUITE 200 | SAINT PAUL, MN | 55101 | 651.286.8450 | WSBENG.COM Memorandum <br /> <br />To: Katie Larsen, Lino Lakes City Planner <br /> <br />From: Kelsey Gelhar PE, WSB <br /> Diane Hankee PE, Lino Lakes City Engineer <br /> <br />Date: October 5, 2022 <br /> <br />Re: Watermark PUD Amendment #4 <br /> Plan Review <br /> 021411-000 <br /> <br /> <br /> <br />WSB reviewed the PUD Amendment #4 for the Watermark Development in Lino Lakes, MN, <br />received September 12, 2022. Amendment #4 proposes to change the northeast area of the <br />Watermark PUD to replace Villa Lots with additional Heritage, Venture, and Townhome lot <br />products. <br /> <br />Engineering <br /> <br />• Erosion Control & Grading <br /> <br />The Watermark PUD plans include site grading for the proposed streets, homes, and <br />storm water facilities. PUD Amendment #4 will require an updated grading plan as it is <br />proposed to remove some of the roadways and lots. The switch from Villa lot widths to <br />Heritage and Venture lot widths will also require grading revisions. <br /> <br />• Stormwater Management <br /> <br />Stormwater management for the northeast area of the Watermark PUD is designed to flow <br />through storm sewer and a series of ponds. PUD Amendment #4 will require revisions to the <br />storm layout and updates to stormwater modeling. PUD Amendment #4 reduces the <br />impervious surface and adds additional open space to the northeast area. The downstream <br />storm sewer systems will be sufficient for the proposed changes. <br /> <br />• Water Supply <br /> <br />The Watermark PUD proposes 16” water main along Lotus Lane, 12” water main along Rainy <br />Lane, and 8” water main on the other streets within the northeast area. PUD Amendment #4 <br />does not propose any changes to the water main at this time. The proposed 8” watermain will <br />be sufficient to serve the proposed homes and townhomes in PUD Amendment #4. <br /> <br />• Sanitary Sewer <br /> <br />The Watermark PUD proposes 10” sanitary sewer along Lotus Lane and 8” sanitary sewer on <br />the other streets within the northeast area. PUD Amendment #4 does not propose any <br />changes to the sanitary sewer at this time. The proposed 8” sanitary sewer will be sufficient to <br />serve the proposed homes and townhomes in PUD Amendment #4.