Latest Brownfield land Stories
A new report from the National Research Council revealed that at least 126,000 sites across the U.S. have contaminated groundwater that requires remediation.
New methods might allow polluted sites to be investigated and monitored long term at significantly reduced costs.
A green technique for capping and cleansing old urban landfill sites and mine dumps has been successfully trialled in South Australia.
Today's soil contamination is a direct result of man-made chemicals or other changes in nature's soil environment. This contamination most commonly occurs from underground storage tanks bursting, use of pesticides, discarding oil and fuel illegally, leakage of dirty surface water, draining of wastes from landfalls and knowingly dumping industrial wastes into the soil. The most widespread chemicals found are petroleum hydrocarbons, solvents, common pesticides, lead and additional heavy metals....
- A pivoted catch designed to fall into a notch on a ratchet wheel so as to allow movement in only one direction (e.g. on a windlass or in a clock mechanism), or alternatively to move the wheel in one direction.