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Ms. Katie Larsen <br />May 1, 2018 <br />Page 2 <br /> <br /> <br /> S:\Community Development\Projects\Planning Cases\Century Farm North PUD 4th Amend & 7th Addition\Staff Reports\20180514 CC (4th PUD Amend & FP)\ <br />8. ADA requirements are to be used for the pedestrian curb ramp where the proposed <br />sidewalk meets Morgan Lane. The City has a new standard detail plat that is to be <br />included in the construction plans and called out in the plan view. <br />9. The grading plan will be required show how all proposed contours will tie in to existing <br />contours. <br /> <br />• Stormwater Management <br /> <br />The Century Farm North 7th Addition project is permitted under RCWD #13-043 for surface <br />water management. RCWD staff stated that the overall proposed impervious surface <br />appears to be less than originally intended, therefore, no amendment (to the permit) is <br />needed. The permit expires on February 15, 2018. <br /> <br />Comments: <br /> <br />1. The existing 21 inch diameter storm sewer crossing Lot 1 shall be removed and realigned <br />parallel to the roadway. This will require the addition of a manhole. <br />2. It is the city’s desire to have driveways positioned to avoid conflict with the existing <br />catch basin structures. If conflict is unavoidable, the existing catch basin structures on <br />Robinson Drive will need new castings to accommodate the proposed driveways. This <br />will require curb replacement and roadway patching. Please add the removals and <br />replacements to the plans (include a road section detail). <br />3. The size of the storm sewer at Morgan Lane shall be labeled on the plans. The storm <br />sewer will need to be replaced to accommodate the sidewalk and grading and curb line <br />change due to the cul du sac. Grade too steep and existing catch basin needs to be <br />relocated. <br /> <br />• Watermain <br /> <br />Century Farm North 7th Addition is served by an existing 8 inch diameter DIP mainline <br />watermain between Lots 2 and 3, and 1 inch diameter copper services for Lots 1 and 4. 1 <br />inch diameter copper services are being extended for Lots 2 and 3. <br /> <br />Comments: <br /> <br />1. A 10 inch diameter HDPE watermain shall be looped through the site between Lots 2 <br />and 3. This loop will require a 20 foot easement. No building shall occur within this <br />easement (air conditioners, decks…). To minimize future maintenance, the city is <br />requiring HDPE watermain. To achieve equivalent internal diameter, 10” HDPE <br />pipe shall be installed and labeled on the plans. <br />2. The record plan information for the existing services shall be included on the plans; also <br />include insulation information. <br />3. The existing hydrant shall be relocated to align with the common lot line between Lots 1 <br />and 2. <br /> <br />• Sanitary Sewer <br />