by neumeyeradmin neumeyeradmin

I-79 and SR-22 Missing Ramps

Balfour Beatty Infrastructure
Robinson Township, PA – 2005-2008 – $525,000

Scope of Work:
PennDOT was adding ramps to the major interchange that had not been included during the initial road construction. Neumeyer Environmental was contracted to perform several activities in support of this project including management of acid mine drainage, noise monitoring, and to provide miscellaneous environmental support.

It was anticipated based on the project design that mine seals would need to be breached as part of the construction. Discharge of the acid mine drainage was expected when this breach occurred that could affect the local environment and water courses. Neumeyer Environmental evaluated the site characteristics and installed a pump and treat system to manage the drainage. The system included a 450 linear foot ditch that included a dispersion system with a neutralizing agent to treat the drainage.

Neumeyer Environmental also performed noise monitoring during the non-standard work hour activities. The project was bounded by several residential neighborhoods that were subject to disturbance by the construction activities. Neumeyer Environmental established baseline noise levels and performed bi-weekly monitoring to ensure noise levels were maintained within acceptable limits.

by neumeyeradmin neumeyeradmin

Clairton Coke Work Retention Basin Containment

United States Steel Corporation
Clairton, PA – 1997 – $350,000

Scope of Work:
Contaminated ground and surface water from a coal-tar retention basin threatened to leach into a nearby stream. The water was highly contaminated with organic compounds.

Neumeyer Environmental installed a groundwater leachate collection system and sheet pile cut-off wall to divert contaminated groundwater and prevent it from entering the adjacent stream. Neumeyer Environmental designed and built a french drain to carry water from behind the wall and transfer it into a sealed manhole. Submersible pumps were installed in the manhole to transfer the water to a wastewater treatment facility. Multiple level switches in the manhole activate pumps as water levels reach specified levels and convey the water to the on-site treatment plant. Pump controls, activation indicators, and flow monitors were remotely mounted in a control building for operator access and protection from the elements.

The new system captured and treated the contaminated water and prevented it from entering the stream.

by neumeyeradmin neumeyeradmin

Gay Street Bridge Replacement

Nyleve Bridge Corporation
Phoenixville, PA – 2008-2009 – $900,000

Scope of Work:
A primary bridge over French Creek in Phoenixville, Pennsylvania was being replaced by PennDOT. Several environmental issues required address as part of the work including lead paint and asbestos-containing materials on the existing bridge and elevated contaminants in the subsurface soils. The piers and subsurface preparations were within a former steel-making facility with elevated inorganic constituents of concern. Neumeyer Environmental was contracted to address and manage these environmental aspects of the work.

Management of on-site soils required sampling and analysis, use of personal protective equipment, segregation of contaminated materials and water quality issues associated with installation of the pier adjacent to French Creek.

Neumeyer Environmental performed select earthwork, demolition, on-site placement and off-site disposal of surplus materials and debris. We also managed the discharge waters from the coffer dam by installing a high volume pump and treat system that allowed direct discharge to French Creek. The project required approximately 10 months to complete from plan preparation and sampling through excavation of the pier subgrade.