We’re Your Commercial Noise Monitoring Experts

Sullivan Environmental provides commercial noise monitoring in Washington, DC.  We have monitored noise conditions for various applications ranging from data storage facilities to residential neighborhoods.

To meet OSHA standards (1910.95), certain workplace noise levels must be maintained.  This applies to county noise ordinances that specify allowable noise levels for most jurisdictions. 

Additionally, our staff can run dBA or dBC analysis for the workplace or area of concern indoors or outdoors. 

Furthermore, our data logging noise monitoring equipment is certified and calibrated for type 1 and 2 noise monitoring applications.  Additionally, we maintain data logging noise monitoring equipment for the monitoring needs of our clients.

Example Project

This project involved the collection of source and ambient noise measurements during a 24-hour period that included worst-case conditions for noise propagation.   This applies to light wind nocturnal inversion conditions and full use of chillers on a day that approached 100 ⁰F during the afternoon. 

 The ambient sound readings were compared to the 55 dB(A) L_dn noise ordinance.  This includes the nighttime penalty of 5 dB(A) from 7:00 P.M. through 7:00 A.M. at the property boundary. 

Follow-up noise monitoring was also performed to evaluate baseline noise levels from the adjacent roadway, including collecting data at comparable distances from the adjoining roadway but at locations removed from the noise source. 

The SoundPlan noise model evaluated various mitigation measures based on the noise data collected at the source areas.