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Ms. Katie Larsen <br />10/03/2025 <br />Page 8 <br />Erickson Property Development - Engineering Review <br />Landform (8/11/2025) Utility services have been moved out of driveways. See <br />updated sheet C4.1 and C5.1. <br />WSB (9/26/2025) Complete <br /> <br />11. WSB (9/26/2025) Protect existing watermain with structure excavation and boring pit <br />Landform (9/30/2025) Callout has been added to sheet C4.1 noting protection of the <br />existing watermain during construction. <br />WSB (10/3/2025) Complete <br /> <br /> <br />• Sanitary Sewer <br /> <br />The proposed Erickson Property sanitary sewer is generally consistent with the original <br />Watermark preliminary plat. Originally this street was to be served from the north with an <br />8” stub from Rainy Lane as part of the Watermark 6th Addition but, due to the northern <br />most property in the stretch not participating, the segment will now need to be served from <br />the existing sanitary sewer in Norway Lane which was installed as part of Watermark 5th <br />Addition. This development will be served by 8- inch diameter poly-vinyl chloride (PVC) <br />pipe along with 4-inch diameter Schedule 40 PVC service pipe to each lot. <br /> <br />Comments: <br />1. Provide utility profiles <br />WSB (9/3/2025) Complete <br /> <br />2. Create a detail for connection to existing sanitary sewer main with sanitary manhole <br />a. Describe process for maintaining existing sanitary sewer, watermain, and <br />storm sewer service as well as vehicle access during construction <br />b. Review impact of proposed sanitary sewer main on existing storm sewer and <br />watermain <br />i. Provide how existing utilities will be protected during installation or <br />salvaged and reinstalled or removed and replaced <br />ii. Possible redesign/realignment of storm sewer <br />WSB (9/3/2025) Provide detail and describe directionally boring sanitary <br />main and penetrating existing structure <br />Landform (8/11/2025) A new MH will be positioned and used to connect <br />the new sanitary sewer to the existing in Norway Lane. See detail <br />C7.2/2. <br />WSB (9/26/2025) Provide notification and coordination with City, Lennar, and <br />local residents for closure <br />Landform (9/30/2025) Understood. <br />WSB (10/3/2025) Provide details and scheduling at preconstruction meeting <br />3. The sanitary sewer segment between MH-117 and MH-116 should be 8” PVC SDR <br />26 <br />a. All other sanitary sewer main should be 8” PVC SDR 35 <br />b. The minimum required slope is 0.40% <br />WSB (9/3/2025) Complete <br /> <br />4. Update all details C7.X/X shown on the plans <br />5. WSB (9/3/2025) Complete <br /> <br />6. Install 8" future sanitary sewer plug to the north of MH-113 <br />WSB (9/3/2025) Complete <br />Page 127 of 145