Hurley Ranch Tentative Tract Map (SUB2013-0009) Tract 3053

The project involves a Major Grading Permit for the development of an 841-square-foot accessory dwelling unit, an 842-square-foot attached garage, and a 189-square-foot entrance porch on a 4.83-acre parcel located at 509 Hurley Ranch Road in Arroyo Grande, California. The construction will disturb approximately 9,700 square feet of land with 300 cubic yards of cut and fill operations, occurring within the Residential Rural land use category under the San Luis Bay Inland Sub Area of the South County Planning Area. The development is tied to a prior tentative tract map, SUB2013-0009 Tract 3053, and requires full compliance with San Luis Obispo County’s land use, engineering, and environmental regulations. All proposed improvements—including private roads, drainage systems, utility extensions, septic systems, and water wells—must conform to approved engineering plans, County Public Improvement Standards, and specific technical codes such as the 1997 Uniform Building Code and PG&E utility rules. The applicant must submit and gain approval for Covenants, Conditions, and Restrictions establishing a perpetual Property Owners’ Association responsible for long-term maintenance of private infrastructure, including roads and drainage basins, which are not to be incorporated into the public system. The project is subject to strict environmental conditions, including a mandated erosion and sediment control plan using native vegetation, seasonal revegetation of disturbed areas between October 15 and April 15, and protection of streams and wetlands by prohibiting heavy equipment and fueling within 100 feet of these features. Fire safety requirements mandate 30-foot setbacks for lots over one acre, 13.5-foot vertical clearance for access routes, and road grades that support 20-ton fire engine loads with maximum allowable slopes of 20 percent and no exceptions beyond 16 percent without mitigation. All construction work must be supervised and certified by a Registered Civil Engineer who will verify compliance with all conditions before final acceptance by the Department of Public Works. The permit is administered by San Luis Obispo County through its Planning and Building Department, with oversight from Environmental Health Services and Public Works, and enforcement of adherence to the California Environmental Quality Act and related County ordinances.