Leaders at the Army Corps of Engineers prepared to construct a parking lot at their Rock Island Arsenal site in Rock Island, Illinois. After considering all of their options, they enlisted the help of the General Asphalt Construction Company and LPS Pavement to install an environmentally friendly pavement system that remains fully ready for active duty.
Finding an appropriate solution to address arsenic in raw water can be challenging for utilities. Studies have shown that when ingested in high concentrations, it is linked to cancer in the skin, lungs, bladder and kidney, and can cause significant skin changes, such as thickening and pigmentation, as well as other health issues. For this reason, the U.S. Environmental Protection Agency (EPA) has a maximum contaminant level standard of 0.01 mg/L. Throughout the country, municipalities are looking for ways to...
Most water utilities should have effective treatment methods for the filtration of arsenic, iron and manganese from drinking water sources. However, as ammonia becomes increasingly concentrated in groundwater throughout the U.S., many utilities around the country are searching for ways to successfully treat the contaminant, while also meeting U.S. Environmental Protection Agency (EPA) standards for arsenic, iron, manganese and other contaminants naturally present in groundwater. There are several approaches to...
Cirrus Research has enjoyed a long alliance with John F Hunt Demolition going back over many years, so much so, the company`s Health, Safety & Environmental Department has accumulated almost an historic arsenal of Cirrus equipment that charts the journey of noise monitoring over the years.The Essex-based limited company was established in 1982 and works with developers, industrialists, contractors and local authorities throughout the private and public sectors. The majority of its Cirrus Research has enjoyed...
Contaminant arsenic(V) has been regarded as one of the top-priority pollutants to remove from water. In this contribution, different mesoporous Y-Al binary oxides were prepared by the wet impregnation method via varying the molar ratio of Y/Al in the range of 0.029 to 0.116. The manufactured materials were employed as adsorbent to separate arsenic(V) from water. The adsorbent was characterized by N2 adsorption–desorption isotherm, point of zero charge (PZC) and Fourier transform infrared (FT-IR). Furthermore, the...
The accumulation of loose deposits in a drinking water distribution system (DWDS) is a potential risk for water quality. In this work, hydraulic disturbance was simulated in different areas of a large DWDS. The water quality features before and after the disturbance were compared, and the solid deposits captured from different experimental sites were characterized. The results showed that the hydraulic disturbance increased the water turbidity and color, which can be attributed to the re-suspension of iron and...
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