Differences in chemical and crystalline composition, fiber dimension, aerodynamic characteristics and biodurability are among the critical factors that define the toxicological and pathological consequences of asbestos exposure. Specifically, fiber dimension can impact whether the fiber is respired, whether and how deeply it is deposited in the lung, and how... more
Degrees in geology, engineering geology and geotechnical engineering? Check.
Professional engineering licenses, industry certifications, and scholarly publications? Check.
Experience managing millions of dollars in complex infrastruction and geoengineering projects? Check.
Trained to climb up and rappel down a 50-foot cliff? Yes, we've got that too.
In our continuing... more
Eric Bregman, Muktar Khatari, & Douglas S. Roy Present at 41st Annual ASCE MET Geotechnical Seminar on Thursday, May 11, 2017 at Hotel Pennsylvania, New York, NY. Presentation is titled "Adapting Underpinning and Excavation Support in 200-year-old NYC Buildings"
As many as 9,000 non-metallic mines operate in Illinois, Iowa, Minnesota, and Wisconsin, approximately one mine per 3,000 residents. They include limestone and granite quarries in addition to sand and gravel mines, providing aggregate for construction, stones for monuments, and sand for glassmaking, foundries, livestock bedding, and oil and natural gas development. These... more
Industrial silica sand has been mined in the upper Midwest for more than one hundred years. In Wisconsin, an estimated 2,500 non-metallic mines, including limestone and granite quarries in addition to sand and gravel mines, provide aggregate for construction, stones for monuments, and sand for glassmaking, foundries, livestock bedding, and oil and natural gas development... more
Industrial silica sand has been mined across the United States for more than a century. Until recently, this sand was used primarily for glassmaking, cores for molding metal castings at foundries, metal production, feedstock for household and industrial cleaners, and construction supplies such as concrete. A small share of the sand was used for hydraulic fracturing, a... more
Sand has been mined for industrial processes across the United States for more than a century. Referred to as silica sand or industrial sand, it is used for a variety of essential industrial purposes, including as feedstock for glassmaking, cores for molding metal castings at foundries, metal production, and household and industrial cleaners; construction supplies such... more
Every aspect of industrial sand mining is regulated by more than 20,000 pages of federal, state, or local government laws and ordinances that combine to form a comprehensive regulatory framework established to protect human and environmental health from the potential impacts of all industrial activities, including industrial sand mining. This comprehensive regulatory... more
Four years ago, GZA was asked by a Boston community health center to review a property that it had recently been granted via a “free” 99‐year lease from the state Legislature. The health center wanted to consolidate its several functions within a centralized clinic in order to better serve its clients more effectively. The downside to the deal was that the property had... more
You only have to spend a few seconds on the website Curbed Boston (www.boston.curbed.com) to realize that the Ink Block development in the South End is one of the most talked about projects in Boston. The former Boston Herald site at the intersection of the Massachusetts Turnpike (Interstate 90) and the Southeast Expressway (Interstate 93) has been transformed into a... more
In 2012, the Novartis Institute for Biomedical Research embarked on a $600 million expansion of its Cambridge, Massachusetts Campus with the addition of a 550,000 square foot complex which includes multiple levels of underground space.
To excavate to the maximum depth in excess of 45 feet, the Contractor faced several logistical challenges presented by the congested,... more
This paper discusses the interaction between geotechnical and structural engineer during complex underpinning design and construction of an existing three-story building (a former funeral home, and parking garage in later years) located on Ludlow Street in the Lower East Side area of Manhattan, New York. The existing 1930-built Neo-Gothic building with a steel frame and... more
Every day about 134,000 vehicles cross the Tappan Zee Bridge trav- elling over the Hudson River in the New York Metropolitan Area. Since the 1980s, the bridge has been in notable decline and undisputedly would be costly to repair.
The Final Environmental Impact Statement foresees that maintaining the current bridge would cost $1.3 bil- lion over the next decade. To... more
In 1859, two years before Abraham Lincoln was sworn in as president and the first shots of the Civil War were fired, Edwin Drake drilled the first commercial oil well in Titusville, Pennsylvania. For more than 150 years, oil and gas development has cycled through boom and bust years in the Appalachian Basin.
The current shale gas  revolution in the Appalachian Basin is... more
Residual Designation Authority (RDA), although not well-known at this time, is a provision in the Clean Water Act that engineers, planners, attorneys, developers and economists should become familiar with in the near future. On July 10, 2013, Conservation Law Foundation (CLF), in concert with other environmental action groups, filed legal petitions requesting that RDA be... more
NSSGA HAS BEEN WORKING tirelessly over the years to provide testimony to the federal government relating to the Clean Water Act. The most recent efforts centered on the definition of navigable waters and guidance that the U.S. Environmental Protection Agency issued in lieu of rulemaking. These advocacy efforts are not to avoid regulation, but to educate EPA regarding the... more
Paper given at Battelle's Second International Symposium on Bioremediation and Sustainable Environmental Technologies, June 10-13, 2013, Jacksonville, FL. ABSTRACT: A former electroplating facility in a heavily developed urban area had source area tetrachloroethene (PCE) concentrations of 9,180 micrograms per liter (µ/L). This is approximately 6% of PCE's aqueous... more
GZA's Adam Fasano of the AirLogics, LLC division was recently interviewed for an article appearing in the Business Section of the Patriot Ledger (Quincy, MA) discussing the use of Perimeter Air Monitoring for clients' job sites. See full article attached below.
This paper discusses goals and challenges to be considered in planning a geotechnical investigation program for the design of high voltage and extra high voltage overhead electrical transmission line structure foundations in New England, based on practical lessons learned on recent projects. The topics presented herein are not necessarily unique to overhead transmission... more
"There it sits on your bookshelf—the Phase I Environmental Site Assessment (ESA) report for the property you just purchased. It looks impressive. It conforms to the ASTM Standard for Phase I ESAs (you hope), and an Environmental Professional signed off on it. At the least, it was good enough to allow your deal to go through. So you’re done with your environmental issues,... more
Dose reconstruction can be a key element in toxic-tort litigation involving most, if not all, materials. This article is an expert analysis of this valid process to determine retrograde exposure assessments - used to establish and evaluate maximal risk, safety assessment and related factors pertaining to toxic-tort litigation. Click on article below.
The members of the National Stone, Sand & Gravel Association identify sustainability as a business approach that integrates environmental stewardship, social responsibility and economic prosperity to ensure the long-term supply of aggregate materials to society. NSSGA recognizes that sustainable practices are necessary today to preserve the potential for a quality... more
In this manuscript, we evaluate the context in which workers were exposed to drywall joint compound based on the state-of-the-art of the construction industry during the post-World War II era through the 1970s and conduct a review of the scientific literature associated with the drywall trade and occupational exposure to airborne asbestos from drywall finishing work... more