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Phase I ESAs: Taking the Scenic Route Through Greene County, Ohio

As with most American families, my holidays are steeped in tradition. One of my favorite Thanksgiving traditions is to put the turkey in the oven and then go out for a bike ride. This year’s ride brought back memories of a series of intense Phase I Environmental Site Assessments (ESAs) that I participated in during 1989 - 1990. These projects were conducted for Greene County Recreation and Parks District and were noted for their national significance under the Federal Highway Transportation Bill. Bowser-Morner, Inc. (BMI) completed Phase I ESAs on the H-Connector and the Little Miami Scenic Trail. Read More

What’s Up With the Regulation of Asbestos in Ohio?

Responsibilities attributed to the Ohio Department of Health (ODH) are currently regulated by OAC 3701-34. However, these responsibilities are expected to be transferred to the Ohio EPA on January 1, 2018. This centralization of the asbestos program is designed to make compliance easier for the regulated community. Some of the more noteworthy changes are discussed here. Read More

The Effects of Leachate Recirculation on Arsenic Concentrations in C&D Leachate

Leachate recirculation is one possible method of leachate management at construction & demolition (C&D) debris landfills. Arsenic is of particular concern in construction and demolition (C&D) landfill leachate. It is naturally occurring in soil and rocks, and C&D leachate commonly exhibits arsenic concentrations higher than “natural” groundwater; and, even if not detected in leachate, the leachate can mobilize the naturally occurring constituents. Any of these occurrences may pose a risk to human health and the environment. The data available for our three study sites show that C&DD leachate contains elevated concentrations of arsenic. Does leachate recirculation increase arsenic concentrations? Read More

Changes in Calcium and Magnesium Concentrations in C&D Leachate with Recirculation

In C&D debris, the dissolution of minerals from drywall and concrete contributes to elevated calcium and magnesium concentrations in leachate. Does leachate recirculation increase the concentrations of calcium or magnesium in C&D leachate? The expected answer would be yes; however, the interaction of recirculated leachate is not that simple, as our data shows. Read More