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HomeMy WebLinkAboutSW6211204_Wetland Determination/Report_20220216 (3)Adams Soil Consulting 1676 Mitchell Road Angier, NC 27501 919-414-6761 December 7, 2021 Project 9957 Southern Living Investment Properties, LLC 1187 N. Raleigh St. Angier, NC 27501 RE: Seasonal high-water table (SHWT) determination for proposed stormwater devices (BMW) for Lane Farm Subdivision adjacent to Wade Stephenson Road in Holly Springs, NC Mr. Stephenson, Adams Soil Consulting (ASC) performed a site evaluation per your request on the above referenced location. The purpose of the evaluation was to determine the depth to the seasonal high- water table for a stormwater devices (swales). One location was evaluated at each proposed swale location. A SHWT determination was made for the lower (lower elevation) portion of the swale. The seasonal high-water table determination was made using soil indicators taken from profile descriptions made at the site. The soil profile descriptions were made from hand auger borings. The soil was most similar to the "Norfolk" and Cecil soil series transitioning to the "Bibb" series in the wetland areas. The Norfolk series is well drained soil found in the Coastal Plain region of North Carolina and the Cecil Series is associated with soils found in Piedmont region. The clay mineralogy found in the subsoil was not considered to be expansive in nature and or was considered to have a relatively low shrink/swell potential. The seasonal high-water table determinations are summarized in the table below. SHWT Depth below soil surface Swale Location (inches) Lot 14/15 -Low End 28 Lot 2/3 - Low end 32 Lot 8/9 - Low end 60+ It should be noted that the seasonal high-water table determinations were made based on observed soil indicators and were not measured or monitored. The actual water table may vary from soil indicators. This report represents the professional opinion of the evaluating scientist of the seasonal high-water table depth for design purposes. If you have any questions or concerns, please contact me at your earliest convenience. Sincerely, Alex Adams NC Licensed Soil Scientist 91247