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Noise and Groundborne Vibration Services

ECORP offers Noise and Groundborne Vibration Services to help project proponents comply with CEQA, NEPA, and other environmental regulations. These services fall into three categories:

Noise Analysis and Modeling Services

CEQA and NEPA require project proponents to generate noise impact assessment reports that include noise analysis and noise modeling calculations. 

This requires a variety of different services, including:

ECORP creates noise impact assessments that comply with CEQA, NEPA, and local regulations as outlined in municipal general plans and design strategies such as recommending sound barrier walls to mitigate the impact of noise and groundborne vibrations on human communities and nearby wildlife. 

Noise Analysis & Modeling: 3D noise model of mitigated operating noise levels at Maverik Fueling Center Project in Orland, California

Real-time and Event Noise Monitoring Services

Baseline ambient noise monitoring within a residential neighborhood

ECORP offers both regulatory and non-regulatory, low-cost real-time and event noise monitoring services. 

Realtime noise monitoring services include continual monitoring of outcoming noise at a project site/event. Sometimes this will be required by state or local government agencies to ensure noise remains below legal levels, especially in residential and commercial areas.

At other times, project proponents monitor outgoing noise in order to be good neighbors or generate positive publicity for their business or brand. 

Event noise monitoring is a similar service that requires real-time monitoring of noise but only during a specific period of time when an event is taking place, such as a concert, sporting event, or other event. This is often performed at amphitheaters, stadiums, and similar facilities.

A Look at ECORP’s State-Of-The-Art Sound Meters

ECORP performs both real-time and event noise monitoring using state-of-the-art Class 1 Larson Davis Soundtrack LXT 1 Class 1 Sound Level Meter. This is the highest level of technological hardware currently available for noise monitoring and satisfies the American National Standards Institute standards for general environmental noise measurement instrumentation.

Larson Davis Soundtrack LXT 1 Class 1 Sound Level Meter

However, the use of these sound meters is expensive and makes mass deployment challenging. To save costs for fenceline monitoring of large areas in real-time or during a scheduled event, ECORP uses low-cost (non-precision, non-regulatory grade) sound level sensors. These can be more feasibly and cost-effectively deployed over large-scale monitoring sites, providing an enhanced number of data points while providing accurate results and decreased expenditures.

ECORP’s low-cost sound level sensors can be attached to commodity data acquisition and transmission hardware to provide real-time sound level measurements viewable on an online portal, thus providing continual data throughout the noise monitoring campaign.

Groundborne Vibration Assessments

Sources of earthborne vibrations include natural phenomena (e.g. earthquakes, volcanic eruptions, sea waves, landslides) or human-made causes (e.g. explosions, machinery, traffic, trains, construction equipment).

When these groundborne vibrations reach a certain threshold, they become annoying and can frequently cause irritating secondary vibrations, such as a slight rattling of windows, doors, or stacked dishes, and when substantial rumbling occurs, entire buildings can actually shake and incur structural damage.

CEQA requires project proponents to provide groundborne vibration assessments as part of noise impact assessment reports. To comply with CEQA regulations, ECORP calculates potential groundborne vibration levels at certain distances from a project site.

Based on these assessments, we design groundborne vibration mitigation strategies to protect surrounding infrastructure, human communities, and wildlife as needed. 

Effects of groundborne vibrations on humans and buildings

Contact ECORP to Learn More about Our Noise and Groundborne Vibration Services

ECORP has provided noise and groundborne vibration services to hundreds of clients and helped them successfully receive the permits needed to begin their next project.

From noise analysis and modeling before construction to noise monitoring during operations to groundborne vibrations assessments at every stage of your project, ECORP provides a full range of noise and groundborne vibration services.

Contact ECORP today to learn more about our noise and groundborne vibration services.