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Ms. Rachel Juba <br /> October 18, 2018 <br /> Page 2 <br /> 2. Wetland 01 is considered a sloped wetland,created by the transition from sandy soils to muck. There <br /> is as much as 30' of elevation change from the type 3 wetland portion in the northeast portion of the <br /> wetland and the upslope southwestern terminus. Based on this,the hydrology of wetland 01 appears <br /> to be fed by surface water drainage from the adjacent uplands and not groundwater;though this is not <br /> supported by borings or other groundwater data. Development of the site needs to ensure surface <br /> water drainage to wetland 01 is not reduced from existing rate and volume to maintain existing <br /> wetland hydrology. <br /> 3. Storm Water Management: The applicant will need to obtain a permit from the City for their <br /> Storm Water Management Plan within the site, including the appropriate storage, rate <br /> control, treatment, and volume reduction. The applicant is utilizing swales, culverts and <br /> ponding. Stormwater management proposed has been reviewed and comments have been <br /> provided to the applicant. These comments currently being addressed. The comments <br /> provided are not significant and are not expected to alter the preliminary plat. A summary of <br /> the requirements are listed below: <br /> a. The site must meet volume reduction requirements of treating 1.1 inches off new <br /> impervious areas. <br /> b. Rate control from the site must be less than existing for the 2-year, and 10-year <br /> rainfall event. Rate control for the 100-year event must be limited to 0.1 cfs/acre. <br /> c. Lowest building opening must be 3 feet above the 100-year HWL of the existing <br /> wetlands and/or stormwater BMP's, 3 feet above the highest known groundwater <br /> elevation and 4 feet above the flood plain. <br /> d. An easement must be established over stormwater management facilities, <br /> stormwater conveyances, ponds, wetlands, on-site floodplain up to the 100-year <br /> flood elevation. <br /> e. Any offsite drainage must be included in the submitted drainage maps and <br /> models. <br /> Transportation <br /> 1. Access Locations: The proposed public roadway access location is appropriately aligned <br /> with the access point located directly across from Hilo Avenue. A sight distance analysis has <br /> been conducted at this access location and sight distance is adequate. The access to lot 4 has <br /> been relocated from directly across from Homestead Avenue to a location to the east as sight <br /> distance on the inside portion of the curve was limited. <br /> 2. Future Trail Location: The Comprehensive plan identifies a future trail along 125a' Street. <br /> The proposed 10-ft drainage and utility easement along 1251h Street should also allow for <br /> trail construction in the future. <br /> Sanitary Sewer and Water Service <br /> 1. Sewer and Water: The property is not located in the MUSA. The property is proposed to <br /> have individual sewage treatment systems and individual wells for the proposed 12 parcels. <br /> Development Agreement <br />