01/13/2021 P&Z Packet - Laserfiche WebLink

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Ms. Katie Larsen 01/07/2020 Page 3 Watermark 4th Addition Engineering Review The proposed water system extension is consistent with preliminary plat. The development is being served by either 16- inch, 12- inch, or 8- inch diameter ductile iron pipe (DIP) water main and 1-inch Type K copper services extended to each lot. Comments: 1. The applicant shall space all fire hydrants at a maximum distance of 400 feet. 2. The applicant shall install temporary hydrants at dead ends. 3. The Utility Plans currently show 5 feet of separation between the steel casing and the bridge bottom (sheet 4). This will be reviewed again once bridge plans are submitted. 4. Applicant to update the plan view note for the watermain crossing 20th Ave (CSAH 54) on sheet 4. The plan view states that the pipe is 12” DIP being directionally drilled, while the profile view says 12” fused PVC. The City will allow 12” DIP watermain in a casing to be installed by open cut if construction is performed when the road is closed for city storm sewer installation. 5. Applicant to show insulation over pipe where 7.5’ minimum cover cannot be reached (see ditch section on sheet 4). 6. The well in Outlot D needs to be abandoned and documentation must be provided to the building official. 7. Applicant to show a future 16” gate valve along the water main that extends through Outlot C (see sheet 7). 8. Applicant to show a future 12” gate valve at the north end of the water main along Forest Lane (see sheet 8) and shall remove the gate valve at station 3+55. 9. Applicant to move the gate valve on the 12” line at station 3+65 (Forest Ln alignment) to the 8” line near station 5+85 (Watermark Way alignment) (see comments on sheet 8). 10. Applicant to add a gate valve on the east side of 20th Avenue (CSAH 54) at Watermark Way. • Sanitary Sewer The proposed sanitary sewer is consistent with the preliminary plat. The development is being served by 8- inch, 10- inch, and 15- inch diameter poly-vinyl chloride (PVC) pipe along with 4-inch diameter Schedule 40 PVC service pipe to each lot. Staff does not have any comments at this time. • Transportation The proposed roadways are consistent with the preliminary plat. The work in this addition includes extending Crane Drive, Watermark Way, and Forest Lane. Crane Drive, Forest Lane, and Watermark Way are proposed to be 32’ wide from back-of -curb to back-of -curb. The applicant is proposing to add a designated right turn lane to Watermark Way from northbound 20th Avenue (CSAH 54). The applicant is also proposing to add a bypass lane for southbound traffic on 20th Avenue (CSAH 54). The proposed entrance to the development will include a bridge over Lake 10 and a roundabout at the intersection of Watermark Way and Forest Lane.