Tag Archives: sound measurement

Environmental Sound Monitoring

DPS Technical is a resource for comprehensive environmental sound monitoring projects.  Projects for developing noise control plans for motorized activities such as race tracks and motorized recreation facilities are our specialty.

The projects can be straight forward individual special event activities such as air shows, outdoor motorcycle races, indoor arena style events that have a limited need for noise data, or the projects can be part of an community or workplace environmental assessment program.

We have performed services for a wide variety of projects and are well equipped to function in remote off road locations.  We have capabilities to perform short term site and activity specific projects or more involved continuous fixed location, continuous sound and environmental monitoring.

We have been the contributing research firm for numerous projects including the California Off Highway Vehicle Noise Study, the USDA Helicopter Over flight study and many regional special events.

We have posted additional information in our resource library.

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Video: Environmental Sound

Facility Noise Occupational Safety and Health Monitoring “OSHA” Compliance

Occupational Safety and Health Standards, 29 CFR 1910.95  – Occupational Noise Exposure the sound levels that the employees are being exposed to are identified by a measurement procedure that specifies loudness (volume) Frequency (pitch) and the exposure time, or dose.

We are well equipped and experienced to take accurate measurements in the areas of concern and then utilize the measurement information to help the management team determine what ear protection and other measures are required as directed in the occupational compliance regulations.

Our reports are comprehensive, well documented informational tools for the compliance and loss prevention team.

The attached web link contains information on the regulation and other resources that should provide guidance:

We have posted additional information in our resource library.

Occupational Noise Exposure

29 CFR 1910.95


Duration per day, hours Sound level dBA slow response
1/4 or less

This standard states: The employer shall administer a continuing, effective hearing conservation program, as described
in paragraphs (c) through (o) of this section, whenever employee noise exposures equal or exceed an 8-hour time-weighted
average sound level (TWA) of 85 decibels measured on the A scale or equivalently a dose of fifty percent.

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Media Support

 Media support

Resources & Media

We have a long history of contributing to the public with our outreach and media activities. Historically we have provided insight to safety with fuels and recreational vehicles, Spark arresters, muffler testing, vehicle sound control, vehicle stability and environmental stewardship.

Many of the published reprints are archived in the media resource segment. With media evolving to webinars and podcasts, our public media section includes a segment of links to our digital involvement.

In our Client resource library we have supplied overviews related to technical papers, noise studies, test standards, testing methodology, sound measuring equipment  guidance, mitigation and enforcement strategies including code enforcement and evidence level measurement methodology.

This library requires a subscription and approval to utilize.

Informational Resources

  • Chainsaw Fuel Geysering – Fuel Pressure and Heat
  • Tech Talk Taco Tuesday – Hanging out with Jimmy Lewis – Dirt Bike Test – talking Fuels and History, Vehicle Certification –do you want a number plate or a license plate?
  • Adventure Rider Radio – Gasoline, Pain at the Pump
  • NOHVCC – Sound Management for Noise Control
  • NOHVCC – Spark Arresters, Past Present and Future
  • World Surf League – Big Waves, small villages and clean oceans Environmental Protection and cultural adjustments – On assignment with the World Surf League and the Tahitian Water Patrol.



Sound Measuring Equipment

DPS Technical supports responsible OHV recreation and believes that excessive sound levels are a main cause of complaints against the sport.

Since 2004 DPS Technical, Inc. has supplied equipment and training for hundreds of OHV law enforcement officers and civilians throughout North America and these dedicated individuals perform sound level tests when possible.

A need for more citizen involvement in voluntary OHV testing has been identified. To remedy the lack of equipment for citizens to provide voluntary OHV sound level testing, DPS is implementing a Sound Testing Equipment Kit Program.  The testing kit includes a Calibrated Type ll sound meter, tachometer, tape measure, storage box and other items necessary to perform spark arrestor inspections, or the SAE 1287 OHV field sound test or the SAE 2825 On Highway Motorcycle sound test procedure.

For further information on the program or to apply contact DPS Technical, Inc. – Chris Real at (909) 981-5228.

DPS Technical also has sound measurement training classes for civilians and law enforcement personnel. Many of the classes are held under contract and sponsored by The State of California OHV Division. To receive information on our training schedule in your area contact DPS Technical for details.

Chris Real, CLS   President
DPS Technical, Inc.
1160 Dewey Way, Suite D
Upland, CA 91786
(909) 981-5228 T