Search results
Results from the WOW.Com Content Network
The U.S. Army Corps of Engineers grabbed soil samples from six residential properties in Laureldale and Muhlenberg Township to test whether lead concentrations pose a public health risk as part of a federal follow-up to a recent soil study that found high lead concentrations in properties that should have been remediated a decade ago near a now ...
Both properties were acquired by the City of Oakland in 1976, and, after two actions aimed at removing lead contaminated soil, the park opened to the public in 1978. [17] Before the initial city removal actions, testing found as much as 100,000 ppm lead in the soil of the park. [18]
In soil science, agriculture and gardening, hardpan or soil pan is a dense layer of soil, usually found below the uppermost topsoil layer. [1] There are different types of hardpan, all sharing the general characteristic of being a distinct soil layer that is largely impervious to water. Some hardpans are formed by deposits in the soil that fuse ...
The storage facility is a part of a natural gas-powered electricity plant operated by Vistra Energy, a Texas company. The facility also has a battery storage station owned by PG&E. Researchers say ...
"Lead in the food chain comes mostly from direct deposit from the air to plants and from livestock eating soil laced with lead as they eat the plants," Darin Detwiler, an associate professor of ...
Soil bulk density is equal to the dry mass of the soil divided by the volume of the soil; i.e., it includes air space and organic materials of the soil volume. Thereby soil bulk density is always less than soil particle density and is a good indicator of soil compaction. [47] The soil bulk density of cultivated loam is about 1.1 to 1.4 g/cm 3 ...
But as the stress approaches its peak value, the volumetric strain starts to increase. After some more shear, the soil sample has a larger volume than when the test was started. The amount of dilation depends strongly on the initial density of the soil. In general, the denser the soil, the greater the amount of volume expansion under shear.
Galena is the primary ore of lead, and is often mined for its silver content. [6] It is used as a source of lead in ceramic glaze. [27] Galena is a semiconductor with a small band gap of about 0.4 eV, which found use in early wireless communication systems.