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077 <br /> LAW ENGINEERING TESTING COMPANY <br /> geatechnical,environmental&canvtruciion materials consonants <br /> 3301 ATLANTIC AVENUE <br /> P.O. BOX 18288 • RALEIGH, NORTH CAROLINA 27619 <br /> (919) 876-0416 <br /> April 7 , 1986 <br /> ERS, Inc. <br /> Route 8 , B516C <br /> Chapel Hill, NC 27514 <br /> Attention: Mr. John Hartley <br /> Subject: Report of Preliminary Soil Evaluation for <br /> On-Site Sewage Disposal Systems <br /> LETCO Job No. : J47286-1634 <br /> Dear Mr. Hartley: <br /> Law Engineering Testing Company is pleased to submit our report <br /> of the preliminary soil evaluation for your review. We were <br /> authorized on April 3 , 1986 to perform hand auger borings on <br /> selected lots at the proposed Heartwood Development near Chapel <br /> Hill, North Carolina. The site is located on Blackwood Mountain <br /> approximately one mile southeast of Blackwood Station near N. C. <br /> 86 . <br /> The lots to be evaluated and the hand auger boring locations were <br /> selected by Mr. Hartley or Mr. Dickinson during the evaluation. <br /> Lot numbers correspond to the drawing entitled "Sketch Plan" <br /> which was used during the field exploration. Soil descriptions <br /> for each lot evaluated are presented in Table 1 . <br /> Generally, the proposed home-sites are situated on slopes of <br /> greater than 15 percent, although small areas within the study <br /> area may be less than 15 percent. According to NCAC Title 10 , <br /> Chapter 10, Subchapter 10A, slopes between 15 and 30 percent can <br /> be considered provisionally suitable if the soils are at least 36 <br /> inches deep. Generally , the soils encountered at the site <br /> consist of approximately 5 to 7 inches of brown loam and silt <br /> loam. The subsoil is a silty clay or clay to a depth of <br /> approximately 36 inches. At lots 1 , 2, 16, 22, and 23 , either <br /> rock or saprolite was encountered at shallower depths. <br /> Based on our observations of soil properties at the lots <br /> evaluated, and in accordance with NCAC Title 10 , Chapter 10 , <br /> Subchapter 10A, Law Engineering would rate each of the lots <br /> evaluated as provisionally suitable for on-site waste disposal . <br /> Lots with soils shallower than 36 inches were observed to have <br />