Fig 1.
Five site decision units and how the grids were established for one decision unit.
Table 1.
Latitude and longitude of decision units.
Fig 2.
This figure shows how increments from each grid are combined to create each incremental sample.
Note that three separate incremental samples consisting of increments from each of 30 locations are used to represent each decision unit.
Fig 3.
View of typical cleared sample location, following use of specialized ISM sampling tool.
Fig 4.
ISM soil sample spread out on aluminum baking tray.
Fig 5.
Soil was subsampled using ISM techniques in the field to obtain a representative sample of the larger area.
Fig 6.
Grid clearing prior to sampling; note that one of the field crew is wearing a portable pump and air monitoring cassette.
Fig 7.
Breathing zone sample being collected during ISM subsampling.
Table 2.
Analytical method summary.
Table 3.
Summary of variability in soil data for asbestos.
Fig 8.
Plot of ABS and stationary air concentrations of asbestos at each decision unit.
Table 4.
Summary of variability in soil data for metals.
Fig 9.
Correlation plot for asbestos versus metals (measured concentrations from ISM samples (9a) and discrete samples (9b)).
Correlations were calculated using Kendall’s Tau. Non-significant correlations are indicated by an X (p = 0.05). Dark blue = strong positive correlation; Dark red = strong negative correlation.
Table 5.
Comparison of asbestos concentration to calcium: Magnesium ratio.