02/10/2021 P&Z Packet - Laserfiche WebLink

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Ms. Katie Larsen 1 /25/2021 Page 2 surface cover as stated in the City of Lino Lakes Zoning code for R-1, Single Family Residential. A NPDES permit is not needed for this site as it is proposed to disturb less than one acre of land. Because the new impervious surface is less than 10,000 square feet, the project does not require Stormwater Management. However, staff has reviewed the drainage in this area and is concerned that the proposed Lot 2 will direct more water towards adjacent properties and trap water near the eastern property line as the area is flat and landlocked. The drainage along the south property line of Lot 2 is shown to be directed to the northwest (rear of the lot), avoiding runoff to the adjacent property to the south. Comments 1. An erosion control plan will be required with the building permit Response: Erosion control measures (silt fence, inlet protection, etc.) have been added to the grading plan. Proposed silt fence shall surround the proposed storm sewer and the limits of grading. 2. Staff is concerned that runoff to adjacent properties will increase due to additional impervious surfaces. A rear yard storm structure or surface water storage area may be needed to avoid creating landlocked low points on the proposed parcel and adjacent parcels. There is an existing 18-inch diameter reinforced concrete storm sewer pipe along Second Avenue that can be used to extend storm sewer. Response: A proposed catch basin with storm sewer has been added to the utility plan. This connects to the existing storm sewer in 2nd Avenue. Drainage arrows shall be shown on the plans similar to the proposed drainage map included with the stormwater calculations. For maintenance reasons, the City of Lino Lakes does not allow 12" diameter storm pipe. Please update to 15" diameter. HDPE pipe can be used, but shall conform to current MnDOT specifications. • Water Supply There is existing 6-inch diameter ductile iron pipe (DIP) watermain along 2nd Avenue west of the site and 12-inch diameter ductile iron pipe (DIP) watermain along Elm Street north of the site. There are two water service stubs extended to the property from 2nd Avenue. The proposed home will be required to connect to the City's water system. The applicant is proposing to connect to the southernmost water service stub along 2nd Avenue. It is recommended that the additional water service stub is removed in the future when 2nd Avenue is reconstructed. • Sanitary Sewer There is existing 8-inch diameter poly -vinyl chloride (PVC) sanitary sewer along 2nd Avenue west of the site and existing 8-inch diameter poly -vinyl chloride (PVC) sanitary sewer along Elm Street north of the site. There are two sanitary service stubs extended to the property from 2nd Avenue. Bald Eagle Addition Engineering Review