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6) Ensure and promote adequate vehicular circulation both <br />within the development and with adjacent neighborhoods. <br />b. The design of streets and the dedication of right-of-way shall be in <br />compliance with the city's current engineering design standards and <br />specifications as may be amended. 28-foot-wide streets with parking <br />on one side are permitted. <br />c. Streets shall not encroach into a required buffer area unless it can be <br />demonstrated that such an alignment is necessary to achieve the <br />goals outlined above, and that no equivalent option exists outside of <br />the buffer. Driving surfaces that cross the buffer area at a 90 degree <br />angle to provide current or future access to an adjacent property or <br />boundary road shall be the only exception. <br />6. Lot creation. Based on the street locations, building pad locations, and septic <br />system locations; lines to delineate individual lots shall then be identified in <br />accordance with the following: <br />a. Lots. <br />1) Single-family lots being served by individual septic tanks and <br />drain fields shall be a minimum of one acre in size; <br />2) In a traditional development, Ssingle-family lots being served <br />by individual septic tanks utilizing communal drain fields <br />shall be a minimum of one-half acre (21,780 square feet) 16,000 <br />square feet in size with a 100’ minimum lot width and 160’ <br />minimum lot depth. Lots designed with rear-loaded parking <br />through a secondary access (alley), may reduce the required <br />front lot width to 80’. <br />3) In a cluster development, single-family lots being served by <br />individual septic tanks utilizing communal drain fields shall <br />be a minimum of 12,800 square feet in size with an 80’ <br />minimum lot width and 160’ minimum lot depth. Lots <br />designed with rear-loaded parking through a secondary <br />access (alley), may reduce the required front lot width to 60’ <br />for a cluster development. <br />4) All land reserved for communal septic system use shall be <br />located within a dedicated outlot to be owned by the <br />homeowners' association (HOA) of the development; and <br />5) Base lots for townhomes shall be large enough such that <br />individual unit lots can meet all required structure setbacks <br />contained herein. <br />b. Lot specific buildable areas. <br />1) The buildable area on each proposed lot which remains after <br />consideration of each of the following shall be shown: