Spreadsheet: 57691295-2c8c-4fb6-8ae4-22e160938c01
Sheet: Mafic-Intermediate

 |  |  |  |  | This chart provides a rough estimate of the SFR Loading Rate Group for soils that formed in residuum weathered from mafic and intermediate crystalline bedrock. This table should not be used to determine the SFR Loading Rate Group. Actual assignment to a SFR Loading Rate Group for each 15A NCAC 02T .0600 permit application shall be determined by the geometric mean of in-situ saturated hydraulic conductivity data collected in the most restrictive horizon for each soil mapping unit.
Mafic and Intermediate Soils
(DO NOT USE THIS CHART TO ASSIGN SFR LOADING RATE GROUP)
 |  | Particle-size Control Section | Drainage Class / Water Table Depth / Type
~SFR Group |  |  |  | Depth to Rock | Subsoil Hue | Shrink-swell
 | Name |  |  |  |  |  | Classification
A | Coronaca | fine | W/>60" | >60" | 10R-2.5YR | Low | Fine, kaolinitic, thermic [NAME]
A | [NAME] | fine | W/>60" | >60" | 10R-2.5YR | Low | Fine, kaolinitic, thermic [NAME]
A | [NAME] | fine | W/>60" | 40-60" Cr | 10R-2.5YR | Low | Fine, kaolinitic, thermic [NAME]
A | Lloyd | fine | W/>60" | >60" | 10R-2.5YR | Low | Fine, kaolinitic, thermic [NAME]
A | Mocksville | fine-loamy | W/>60" | >60" | 7.5YR-2.5Y | Low | Fine-loamy, mixed, active, thermic [NAME]
A | [NAME] | fine-loamy | W/>60" | 20-40" Cr | 5YR-2.5Y | Low | Fine-loamy, mixed, active, thermic [NAME]
A | Sekil | coarse-loamy | W/>60" | 20-40" R | 7.5YR-10YR | Low | Coarse-loamy, mixed, semi-active, thermic Ultic Hapludalfs
A(B) | Cullen | very fine | W/>60" | >60" | 10R-2.5YR | Moderate | Very-fine, kaolinitic, thermic Typic Hapludults
B | Mecklenburg | fine | W/>60" | >60" | 2.5YR-5YR | Moderate | Fine, mixed, active, thermic Ultic Hapludalfs
B | Musella | loamy | W/>60" | 14-20" Cr | 10R-2.5YR | Low | Fine, mixed, subactive, thermic, shallow [NAME]
B(C) | Wilkes | loamy | W/>60" | 10-20" Cr | 5YR-2.5Y | Moderate | Loamy, mixed, active, thermic, shallow [NAME]
C | Enon | fine | W/>60" | >60" | 7.5YR-2.5Y | High | Fine, mixed, active, thermic Ultic Hapludalfs
C | Pittsboro | fine | MW/1.0-2.0' P | 20-40" Cr | 7.5YR-2.5Y | High | Fine, mixed, active, thermic [NAME]
C | Sedgefield | fine | MW-SP/1.0-1.5' P | >60" | 7.5YR-5Y | High | Fine, mixed, active, thermic Aquultic Hapludalfs
C | Winnsboro | fine | W/>60" | 40-60" Cr | 7.5YR-2.5Y | High | Fine, mixed, active, thermic [NAME]
C | [NAME] | fine | W/>60" | 20-40" Cr | 7.5YR-2.5Y | High | Fine, mixed, active, thermic [NAME]
C(D) | Brewback | fine | SP/0.5-2.5' P | 20-40" Cr | 7.5YR-5Y | Very high | Fine, mixed, active, thermic Aquertic Hapludalfs
C(D) | Crawfordville | fine | MW/1.0-1.5' P | 20-40" Cr | 7.5YR-2.5Y | Very high | Fine, mixed, active, thermic Aquertic Hapludalfs
C(D) | Iredell | fine | MW/1.0-2.0' P | 40->60" Cr | 10YR-2.5Y | Very high | Fine, mixed, active, thermic Oxyaquic Vertic Hapludalfs
C(D) | [NAME] | fine | MW/1.0-2.0' P | 20-40" Cr | 7.5YR-2.5Y | Very high | Fine, smectitic, thermic Aquertic Hapludalfs
C(D)* | Picture | fine | P/0.5-1.5' P | 40-60" Cr | 10YR-5Y | Very high | Fine, smectitic, thermic Vertic Argiaquolls
X | Armenia | fine | P/0.5-1.5' A | >60" | 10YR-5Y | High | Fine, smectitic, thermic Typic Argiaquolls
* | Areas of these soils with less than a 12 inch vertical separation between a perched water table and the ground surface cannot be permitted for SFR systems under 15A NCAC 02T .0605(q).
X | These soils have less than a 18 inch vertical separation between the apparant water table and the ground surface and cannot be permitted for SFR systems under 15A NCAC 02T .0605(p).