The Lower San Joaquin River Phase C-2 project is part of a larger flood-risk-management program to reduce flood risk in the North, Central, and South Stockton basins in California. Phase C-2 focuses on the Calaveras River Right Bank levee system and includes reaches totaling approximately 23,130 feet of levee between the San Joaquin River confluence and North El Dorado Street.
A major international organization is undertaking design and construction of a new major nuclear materials facility that will become the backbone of their research and development infrastructure and deliver nuclear science and technology programs. The facility is also important to the organization’s ambition to penetrate new international markets and add capabilities to better meet the needs of their federal and commercial customers.
Center Hill Dam is one of the multipurpose projects that make up the Corps of Engineers' system for development of the water resources of the Cumberland River Basin.
In 2016, five areas of significant bank erosion were discovered near the Merrimack Valley Regional Transit Authority (MVRTA) operating facility. The erosion spanned approximately 500 linear feet of shoreline of the tidally influenced Merrimack River and damaged several stormwater outfalls, a retaining wall, and the foundations of two MVRTA buildings.
This earth-rock dam, including embankment and powerhouse facilities, was constructed between 1923 and 1925. The dam impounds a 3,600-acre lake, which is the largest freshwater lake in a state in Northeast United States. For seepage control, the dam contains a thin-section concrete core wall beneath the upstream portion of the crest. The embankment, which has a maximum height of 86 feet and length of approximately 1,300 feet, was constructed using the semi-hydraulic fill method whereby earthen materials were dumped on either side of the core wall and then sluiced towards the core. The dam is State-regulated and is classified as a high-hazard structure.
Mule Dam is located near the city of Ione, in Amador County, California. The 540 acre-feet reservoir holds treated effluent from nearby Mule Creek State Prison (MCSP). Classified as a high-hazard potential dam (HHPD) by the California Division of Safety of Dams (DSOD), the failure of this structure would likely cause significant damage and loss of human life. The project's objective was to evaluate the impacts of a potential breach. Information from the study was used to update the dam's Emergency Action Plan (EAP).
Arch Resources (Arch) is a leading U.S. producer of metallurgical products for the global steel industry, and the leading supplier of premium High-Vol A metallurgical coal globally. Arch and its subsidiaries operate four large, modern metallurgical mines that consistently set the industry standard for both mine safety and environmental stewardship. The flagship Leer mine consistently ranks among the lowest cost U.S. metallurgical mines and produces a product quality that is recognized and sought-after worldwide. Leer operations are complemented by the Leer South, Beckley and Mountain Laurel mines, which in aggregate provide Arch with a full suite of high-quality metallurgical products for sale into the global metallurgical market. Arch and its subsidiaries also operate highly efficient, low-cost thermal mines in the Powder River Basin in Montana and Wyoming, and in Colorado. These mines produce highly cost-competitive thermal coal for sale into the domestic and international power generation markets.
In support of the rapid expansion of American digital and energy infrastructure, an investor sought expert guidance before acquiring a combined cycle gas turbine power plant. Recognizing the complexity and significance of the transaction, the investor engaged Geosyntec to conduct a comprehensive technical due diligence review, focusing on environmental, health, and safety and sustainability risks.
Zenobē, a company that provides sustainable power storage solutions, is expanding their portfolio of Battery Energy Storage System (BESS) facilities iacross the US. The new sites must undergo due diligence, environmental assessment and permitting, and conceptual design as part of Engineering, Procurement, and Construction bid packages before construction can commence. To date, Zenobē has requested the help of Geosyntec to streamline the permitting process and allow for the efficient approval and construction of proposed facilities in New York, Maryland, and Illinois.
Microplastic research has increased in the past decade, primarily focusing on aquatic environments. Recently, there has been a shift in focus toward understanding microplastic impacts in terrestrial environments, including agricultural land. There have been limited studies of how microplastics move through the soil; how they affect soil properties and biota; and their potential consequences for seed germination, plant growth, and fruit production. Of the published studies, researchers have found that microplastics in soil can affect seed germination rates, be absorbed by plants, and be transported from the roots to other parts of the plant. The results of these studies could impact multiple industries, including agriculture and industrial wastewater.
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