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2 <br />Error! Unknown document property name. <br />road rights-of-way and agricultural buildings are included in the open space area. <br />Road rights-of-way and buildable lots are not considered open space area. <br />2. 105.12.980-105.12.1110 (OPEN SPACE PLANNED UNIT DEVELOPMENTS) <br />A. Add clarity to primary uses and setbacks for accessory use - 105.12.1040 <br />• Staff identified confusing language around single-family attached and <br />setbacks within the OP-PUD for accessory structures. The language <br />combines single-family attached and townhouses. The added language and <br />accompanying table reduce setbacks since the lot area requirements are <br />reduced. Rural Residential requires a 10-acre minimum lot size. Adding new <br />language to the sections is intended to offer clarity. <br />B. Update Open Space PUD Design Standards - 105.12.1050 <br /> <br />1. Density. <br />• Staff are suggesting increasing the density from .45 units per acre to .8 <br />units per acre. The reason for increasing density is two-fold. First, the <br />existing density is based on 1 acre lots and many of the developments <br />are less than 1 acre with a communal drain field. Secondly, increasing <br />density should make development in Lake Elmo more economically <br />competitive. <br />2. Density bonus. <br />• Staff are also proposing a 10% density bonus for sites with considerable <br />wetlands or natural area or stormwater reuse for irrigation. Currently <br />there is a 20% density bonus for similar sites outlined in the standard <br />PUD section. For clarity, this bonus is outlined in the OP-PUD section <br />of code. The reduction in percentage from 20% to 10% is based on the <br />newly proposed increase to the base density. <br />3. Septic design identification. <br />• Based on feedback from the city engineer, staff have added low pressure <br />sewer guidance to sites proposing communal drain field. <br />4. Identification of required buffers. <br />Staff are proposing amending the language in this section for conciseness <br />and clarity. <br />5. Placement of streets. <br />• Based on feedback from the city engineer, staff added clarifying <br />language to permit 28-foot-wide streets with parking on one side of the <br />road. This language is meant to add flexibility for developers while <br />maintaining high design standards and connectivity for the city. <br />6. Lot creation. <br />• Staff is suggesting that single-family lots that are served by individual <br />septic tanks, utilizing communal drain fields, decrease in size from <br />21,780 square feet to 16,000 square feet. Staff also propose a 100’ <br />minimum lot width and a 160’ minimum lot depth. These changes are <br />meant to encourage development, while preserving natural land. <br />• Lots designed with rear-loaded parking through a secondary access <br />(alley), may reduce the required front lot width to 80’. These changes <br />are meant to encourage development, while preserving more open space <br />area. Additionally, this can be more space-efficient and environmentally <br />friendly compared to each lot having a separate drain field. <br />C. Update Open Space PUD Development Standards – 105.12.1060