Identify Information Inputs Clause Samples

Identify Information Inputs. Concrete, soil, and groundwater sample results for quantitative use in determining contamination contained within the footprint of the C-400 Complex area.

Identify Information Inputs. The information needed consists of reliable measurements of LA levels in duff materials and tree bark. Samples should be collected using a sampling design that allows for estimation of the average level of LA in duff or tree bark from the collection area (i.e., a single multi-point composite sample or multiple single-point samples from which a mean can be calculated). In addition, samples should be collected in a manner that is equivalent to the sample collection methods used in previous sampling efforts (e.g., OU3 Phase I sampling effort). For ▇▇▇▇, results should provide an estimate of the level (e.g., asbestos structures per gram of dried duff [s/g, dry weight]) of LA in duff. For tree bark, results should provide an estimate of the level of LA loading on the tree bark surface (e.g., asbestos structures per cm2 of area [s/cm2]). Samples should be analyzed for LA using transmission electron microscopy (TEM). Because it is possible that, if present, the asbestos observed in the areas of interest may be different from the type of asbestos derived from the ▇▇▇▇▇ ore body at the mine site, TEM analysis results should include the size attributes (length, width) of each asbestos structure observed, along with the mineral classification (LA, other amphibole, chrysotile). In addition, information on the sodium and potassium content of each LA structure observed, as determined by energy dispersive spectroscopy (EDS), should also be recorded. This requirement is based on the observation of ▇▇▇▇▇▇ et al. (2003) that most particles from the ▇▇▇▇▇ ore body contain detectable levels of both sodium and potassium, whereas other potential sources of amphibole fibers may not.