Attachment B <br />right-of-way map and EC Table 9.6870. EC 9.6870 Street Width confirms that the required right-of- <br />way width for Oakleigh Lane is 45 feet, based on the street functioning as a Low-Volume Residential <br />Street. Public Works staff confirms that there are currently 25 residential tax lots along Oakleigh <br />Lane, and with the addition of 29 dwelling units proposed by the subject development, the Average <br />Daily Traffic (ADT) would be greater than 500 trips per day, which is within the expected 250-750 <br />ADT range for low-volume streets. <br />The existing right-of-way width abutting the subject property is 20 feet, which was dedicated by <br />properties to the north, per the Plat of Oakleigh in 1927. The southerly margin of this 1927 <br />dedication is the official right-of-way centerline for Oakleigh Lane. Any additional dedications <br />required of the subject development would be based on this centerline. Based on the right-of-way <br />requirement of 45 feet for a low-volume street, and the existing 20 feet of right-of-way width <br />located north of centerline, an additional 22.5 feet of right-of-way dedication (half of 45 feet) from <br />the subject property is necessary, for the portion of the street being impacted by the subject <br />development (i.e. from the site driveway to the west property boundary, which is about 50 lineal <br />feet). <br />Oakleigh Lane currently terminates near the proposed-driveway. As noted above, the right-of-way <br />width needs to be expanded by an additional 22.5 feet in width for a length of 50 feet, between the <br />northwest property corner, over the proposed site entrance, and five feet east of the proposed <br />driveway to accommodate the approach apron and sidewalk. Beyond that point, Public Works staff <br />confirms that right-of-way is needed to enable further development of adjacent lands to the north, <br />and to provide a future hammerhead turnaround and sidewalk at the east end of the street. The <br />acceptability of not extending the street, further to the east, is based on an exception to EC 9.6815 <br />Street Connectivity. Public Works staff confirms that the applicant's alternative street plan, along <br />with their narrative that addresses the intent statements at EC 9.6815(1), an exception is warranted <br />pursuant to EC 9.6815(2)(8)(1). <br />The applicant's alternate street study (Figure 1, Attachment D-5) identifies the amount of right- <br />of-way necessary to construct an emergency vehicle turnaround at the end of Oakleigh Lane, <br />and to provide the necessary frontage for flag lot development of undeveloped adjacent lands <br />to the north (Tax Lot 200). Public Works staff indicates that the applicant's proposal is sufficient <br />to accommodate the turnaround, but not the area necessary to extend the sidewalk along the <br />south side of the turnaround, to separate pedestrians from.vehicles and provide a safe public <br />walking surface for the residents of the proposed development. The amount of right-of-way <br />necessary to allow for the construction of the proposed turnaround and adjacent sidewalk <br />would be a strip that is 13 feet wide by 199 feet in length. These dimensions assume that the <br />turnaround would be 21 feet wide and that the north edge of the turnaround would match the <br />existing edge-of-pavement in Oakleigh Lane, which is shown on the tentative plans as being six <br />feet south of the existing right-of-way. The addition of a six-inch curb, five-foot sidewalk, and <br />six inches behind the sidewalk, as necessary for construction purposes, results in the need for a <br />total of 33 feet of right-of-way (for the future hammerhead turnaround at the east end of <br />Oakleigh Lane), 13 feet.of which is within the bounds of the proposed development (with the <br />balance coming from the northerly property, whenever that property decides to develop). <br />Hearings Official Decision (PDT 13-1, WG 13-1) 19 <br />