Pre Blast Inspections / Surveys
Pre / Post Construction Inspections / Surveys 

TI - 88 Compliance
Vibration Plans
Vibration and Sound Monitoring Studies

Manual Vibration Monitoring
Automatic / Wireless Vibration Monitoring
Well Water Testing
Radon Testing
Carbon Monoxide Monitoring
Crack Monitoring

Expert Testimony

Our Services

Pre-blast / Pre-Construction Surveys, Seismic Monitoring in New York, New Jersey, New York City, Connecticut, and Massachusetts

 Drilling and Blasting  

Tunnel Work

Rock Hammering

Sheet and Pile Driving and Shoring      

All utilities, Gas Main,  Water, Sewer
Vibratory Compaction      

​General Excavation

Highway Construction and Widening                       

Line Drilling                           
​Rock Quarry Work           
Demolition and Rehab Projects 

Home Office Scarsdale call 860.805.7885

                    Projects We Serve


Scarsdale, NY, Darien, CT, Manchester, CT

              Los Angeles, California


                                               MONITORING VIBRATION IS STANDARD FOR SAFETY


HSI has performed seismic monitoring at hundreds of worksites throughout New York, Connecticut, and Massachusettes. 
                                                      Linking Communities and Projects
The presence of HSI personnel on a work site is helps homeowners feel comfortable about the project. More than technicians, our employees are work with the surrounding building owners. We answer questions and explain the scope of project to neighbors surrounding a job. 

Seismic Monitoring

Please call or email us using our contact page

Whether a job calls for a permanent wifi monitoring station or a technician on site, our vibration and noise level monitoring programs are designed to meet the exact needs of a project. Vibration is safe as long as it stays within the safety standards. There are no cumulative effects of vibration, Seismic Monitoring (Vibration Monitoring), is the key to safe construction activities.
Professional Set Up
Our experienced technicians have understand how and where to set up a seismograph to accurately record all ground vibrations. We use D&L Thomas Seimographs that are fully downloadable. All shot records are saved and provided digitally upon request.

picture from