Minnesota Administrative Rules
Agency 167 - Pollution Control Agency
Chapter 7037 - PETROLEUM CONTAMINATED SOIL MANAGEMENT
Part 7037.2900 - COLLECTION OF GRAB SAMPLES OF PETROLEUM CONTAMINATED SOIL
Universal Citation: MN Rules 7037.2900
Current through Register Vol. 48, No. 39, March 25, 2024
Subpart 1. Soil samples collected from stockpiles.
Grab soil samples collected from a batch of stockpiled petroleum contaminated soil must be collected as described in items A and B.
A. The number of grab samples from
a batch of stockpiled petroleum contaminated soil that must be collected is
based on the volume of petroleum contaminated soil, as follows:
Volume of Soil (cubic yards) | Number of Samples | |
Less than 50 | 1 | |
51 - 500 | 2 | |
501 - 1,000 | 3 | |
1,001 - 2,000 | 4 | |
2,001 - 4,000 | 5 | |
Each additional 2,000 yards | one additional sample |
B.
Each soil sample must be collected from a freshly exposed portion of the
interior of the stockpile, taken no closer than one foot from the exterior
surface of the stockpile. Cross-contamination of soil samples must be prevented
by using clean disposable gloves and other clean sampling utensils at each
point that a sample is collected. Soil samples must be preserved prior to
analysis using either chemical preservation, if required for the particular
laboratory method as described in the laboratory methods referenced in part
7037.3100, or storage at a
temperature of four degrees Celsius or colder.
Subp. 2. Soil samples collected from borings.
Grab soil samples collected from borings must be collected as described in items A and B.
A. A
minimum of two grab samples must be collected from a minimum of two different
soil borings. If the estimated volume of soil to be excavated exceeds 500 cubic
yards, then the number of samples must follow the table under subpart
1, item A.
B. Samples must be collected from portions of
the borings that represent soil that will be excavated or proposed to be
excavated. The methods given in subpart
1, item B, for preventing
cross-contamination and for preserving samples must be followed.
Statutory Authority: MS s 116.07
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