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24 <br /> INTRODUCTION & SITE DESCRIPTION <br /> A Reconnaissance Soil & Site Evaluation was performed on an approximately 78.11-acre tract <br /> located on Hwy 86 N in Hillsborough, Orange County, NC (PIN: 9865878090). Earthly <br /> Elements Soil Consulting, PLLC (Earthly Elements) was retained to evaluate the soil and site <br /> conditions and identify suitable areas for placement of on-site subsurface wastewater systems for <br /> single-family residences. The property was evaluated in accordance with Orange County and <br /> North Carolina wastewater regulations "Orange County Regulations for Wastewater Treatment <br /> and Disposal Systems", January 1, 2024, and"15A NCAC 18E—Wastewater Treatment and <br /> Dispersal Systems—Version 1 —November 9, 2023", effective January 1, 2024. <br /> The site was mixed between mature hardwoods and early successional growth. Surface water <br /> features were identified. A four-bedroom single family residence with a design daily flow of 480 <br /> gallons per day(GPD) is assumed for this report. <br /> INVESTIGATION METHODOLOGY <br /> The field survey was conducted on March 8 and 13-14, 2024, by Evan T. Morgan, LSS. Soil <br /> borings were advanced with hand-augers and soil color determined using a Munsell Soil Color <br /> Chart. Observations of the landscape as well as soil properties(depth, texture, structure, soil <br /> wetness, restrictive horizons, etc.) were recorded. Soil borings were described per the USDA- <br /> NRCS, Field Book for Describing and Sampling Soils, Version 3.0. Soil boring locations were <br /> marked with blue ribbon flagging when feasible. <br /> DISCUSSION <br /> Three areas of soil rated as Suitable for Conventional or Low-Profile Chamber Systems were <br /> identified across the tract. A long-term acceptance rate (LTAR) in the range of 0.25 to 0.3 <br /> GPD/sq-ft is anticipated for these soil units. As such, a four-bedroom single-family residence <br /> with a design daily flow of 480 GPD would require approximately 7,000 to 9,000 sq-ft to support <br /> the initial system and 100% repair area utilizing 400 to 480 linear feet of accepted system <br /> drainline per initial and repair system. Systems sited in areas with soil depths suitable for Low- <br /> Profile Chamber systems would require 25%more drainline. <br /> Ten areas of soil rated as Suitable for Subsurface Drip systems were identified across the tract. A <br /> LTAR in the range of 0.1 to 0.15 GPD/sq-ft is anticipated for these soil units. As such, a four- <br /> bedroom single-family residence with a design daily flow of 480 GPD would require <br /> approximately 7,000 to 10,000 sq-ft to support the initial system and 100%repair area utilizing <br /> 1,600 to 2,400 linear feet of drip tubing drainline per initial and repair system. LTAR's for <br /> subsurface drip systems must be substantiated by in-situ saturated hydraulic conductivity testing. <br /> Subsurface drip systems require a Special Site Evaluation by a LSS and a design by a <br /> Professional Engineer to permit and install. These areas are recommended to be allocated for <br /> repair areas or home sites. <br /> Additional details for the soil units are appended. <br /> 1 <br /> Hwy 86 N — Brown Tract <br /> Earthly Elements Job#: 24-032 March 19, 2024 <br />