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Quality Control and Assurance for Electromagnetic Soil Density Gauges is Subject of New ASTM ...
2013-04-23 06:00:00| Industrial Newsroom - All News for Today
ASTM D7830, Test Method for In-Place Determination of Density and Water Content of Soil Using an Electromagnetic Soil Density Gauge, will be used by contractors and government agencies for quality control and quality assurance of electromagnetic soil density gauges. Standard covers procedures for determining in-place properties of non-frozen, unbound soil and soil aggregate mixtures by measuring electromagnetic impedance of compacted soil using electrical, non-nuclear devices. This story is related to the following:Trade Associations
Vapor Intrusion Measurement is Subject of Proposed ASTM Soil and Rock Standard
2013-04-23 06:00:00| Industrial Newsroom - All News for Today
ASTM WK40037, Guide for Determining Concentration Values from Groundwater, Air and Soil Gas Using Adsorbent-Based, Passive Samplers, will link easy to use, cost-effective, and nonintrusive passive sampling with concentration data to measure vapor intrusion. Demonstrating that compound concentration in air, soil gas, or water can be measured accurately and provide defensible quantitative data, this standard will help promote avoidance of health problems associated with vapor intrusion. This story is related to the following:Trade Associations
Tags: subject
standard
rock
proposed
Modeling Soil Phosphorus Management
2013-04-12 00:56:00| National Hog Farmer
Source: Agricultural Research magazine The U.S. Department of Agricultures Natural Resources Conservation Service (NRCS) is looking for ways to upgrade the Phosphorus Index, a simple management tool developed during the 1990s to gauge the risk of phosphorus losses from agricultural fields. In developing a national nutrient-management policy, NRCS allowed states to modify the original indexa matrix of source and transport factors that contribute to phosphorus losswith inputs to account for local variations in soils, climate, management and water quality goals. read more
Tags: management
soil
modeling
phosphorus
Amid China air, water pollution, soil survey reveals century-old heavy metals
2013-04-10 09:33:00| Climate Ark Climate Change & Global Warming Newsfeed
Reuters: Soil samples across China have revealed remnants of toxic heavy metals dating back at least a century and traces of a pesticide banned in the 1980s, an environmental official said on Wednesday, revealing the extent of the country's pollution problems. Street-level anger over air pollution that blanketed many northern cities this winter spilled over into online appeals for Beijing to clean water supplies, especially after rotting corpses of thousands of pigs were found last month in a river that...
Weather, Cold Soil Holding Back Planting in Minnesota, Iowa
2013-04-09 22:03:00| Corn & Soybean Digest
In 2012, most farmers in southern Minnesota and Iowa began full-scale fieldwork during the week of April 10-17, with most of the corn being planted by the end of April. By comparison in 2013, we are not likely to see much full-scale fieldwork across the region until after April 15, and we are probably a couple a weeks away, at a minimum, from seeing a significant amount of corn being planted. Focus on Ag read more
Tags: back
cold
weather
holding
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