e9dd6711_Soil_sampling__RISK_CONTROL
[SPECIFIC JOB STEPS] B. Soil PileThe number of samples required for an excavated pile will be related to the quantity of soil stockpiled. The table at the end of this instruction can be used as a guide in determining the appropriate number of samples. Samples shall be collected in accordance with proper sample collection techniques. All samples must be collected in glass containers with air-tight sealable tops. [RISK ASSESSMENT] Where in the pile should be sampled? [RISK CONTROL] 
Best judgment is needed to determine the most appropriate sampling locations. The objective of the sampling is to characterize the extent of contamination of the pile. Consideration should be given to how the soil was stockpiled. Is the most contaminated soil toward the top? Are areas visibly contaminated? How high and how long is the pile? It may be preferable to divide the pile into manageable segments. Samples should be taken from within the pile. Surface soil should not be used as sampling material.
Soil sampling
RISK CONTROL