Minnesota Administrative Rules
Agency 167 - Pollution Control Agency
Chapter 7037 - PETROLEUM CONTAMINATED SOIL MANAGEMENT
Part 7037.3300 - CHARACTERIZATION OF NATIVE SOIL
Current through Register Vol. 48, No. 39, March 25, 2024
Subpart 1. Organic matter concentration.
Organic matter concentration in a native soil must be determined using a method in one of the following references:
Subp. 2. Extractable phosphorus concentration.
If the extractable phosphorus concentration of a native soil is to be determined, this must be determined as given in the references in subpart 1.
Subp. 3. Soil permeability.
Soil permeability must be reported as one of the following ranges in units of inches per hour: more than 6, 2.0 to 6, 0.6 to 2.0, or less than 0.6. If the native soil at the land treatment site is mapped in a Soil Conservation Service soil survey, the soil permeability information in the soil survey or Soil Conservation Service soil interpretation records may be used. If the information is not available, then the soil permeability must be determined using one of the methods in items A to C.
Soil texture classification | Permeability (inches per hour) |
Gravel, sand, fine sand, loamy sand, loamy fine sand | more than 6 |
Sandy loam, fine sandy loam | 2.0 to 6 |
Loam, silt loam, sandy clay loam | 0.6 to 2.0 |
Clay loam, silty clay loam, sandy clay, silty clay, clay. | less than 0.6 |
Subp. 4. Soil texture.
If the native soil at the land treatment site is mapped in a Soil Conservation Service soil survey, the United States Department of Agriculture soil textural information in the soil survey or Soil Conservation Service soil interpretation records may be used. If such information is not available, then the soil texture must be determined using one of the following references:
Subp. 5. Seasonal high water table.
The depth to the seasonal high water table must be obtained or determined as described in items A and B:
Where the depth to the seasonal high water table is given as a range, the actual depth shall be considered as the average of the range.
Statutory Authority: MS s 116.07