MUS-93-12.92 Mine Void Grouting – Beaver Excavating – Muskingum County, Ohio

STONE was retained to provide a Health and Safety Plan, Work Plan, Phase II Environmental Site Assessment (ESA), and on-site monitoring during a construction project that included the grouting of a mine void near an interstate highway. The mine grouting involved the drilling and injection of cement and flyash grout into abandoned coal mine workings underlying approximately 8,500 feet of interstate I-70 in danger of subsidence damages. The Health and Safety Plan established the necessary actions to protect workers and equipment during the drilling and grouting activities, and incorporated the Work Plan for the sequencing of work and procedures. The site was complicated and constrained due to high traffic flow at the work area, adjacent cemetery and gasoline station, and sequencing of grout trucks.

STONE also provided daily oversight during the production drilling and grouting. Duties included monitoring headspace in workers’ breathing zone using a photo-ionization detector (PID), monitoring explosivity limits in the boreholes, and periodically monitoring headspace readings in the drilling process. Monitoring of water levels also took place.

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“STONE is an instrumental part of our team on the Portsmouth By-Pass Project: the 16-mile new construction project, which is the single largest project in ODOT history. This project has come with more than its share of environmental challenges. STONE has delivered over 30 full environmental clearance reviews and reports we have requested as part of the project, handling them from start to finish in a very timely & cost effective manner. Furthermore, they’ve proven themselves as an extremely valuable resource when it comes to consulting on mitigation efforts, hazardous materials, and resolving various unknown environmental situations that the project has encountered.

 

From the top down STONE has proven they are committed to excellence and we look forward to working with them on many projects in the future.”