Noise Monitoring in
Montana
Class 1 sound data for Montana's local noise codes.
Montana is growing fast, and construction has followed — housing and infill in the Gallatin Valley, resort work around Big Sky, and major projects near Great Falls. Montana sets no statewide construction-noise limit, so the rule that applies comes from the city or county, and Bozeman, Missoula, Billings, and others each write their own.
Specto equips Montana contractors and consultants with Class 1 monitoring stations that record around the clock, send alerts when a threshold is exceeded, and report automatically. Instead of assembling a system on site, your team installs a configured station and starts documenting conditions from day one — answering questions with data instead of recollection.
Regulatory
The Rules That Apply to Montana Projects
Montana has no statewide construction-noise limit. Requirements come from local ordinances and a few state and federal rules, so the governing standard depends on the city or county:
- Local ordinances set the limits — many Montana cities use zone-based limits, commonly around 55 dB(A) day and 50 dB(A) night in residential areas, 65/60 in commercial areas, and 80/75 in industrial areas, measured at the property line
- Bozeman — caps construction noise at 60 dB(A) between 8:00 p.m. and 7:00 a.m. at an adjacent property line, with a permit and appeal process for work outside those limits
- Missoula and other cities — set zone-based limits and allow construction to briefly exceed them during daytime hours under an active permit, with the most-restrictive-zone limit applying at a boundary
- Quiet hours and enforcement — most communities set nighttime quiet hours and measure sound at the property line or a set distance, with police or code officers enforcing on complaint
- Federal and state rules — federal OSHA worker noise exposure requirements (29 CFR 1926.52) and FHWA 23 CFR 772 apply, alongside Montana DOT requirements and project-specific permit conditions
Why Montana Teams Choose Specto
01
Ready to Deploy: US Inventory
Specto stocks Class 1 noise monitoring systems in the US for rent or purchase. Teams in Billings, Bozeman, Missoula, Great Falls, Helena, and Kalispell can have monitoring on site in days — before a concern turns into a delay.
02
Field-Ready: Configured Before Shipment
Each station arrives with alert thresholds, reporting schedules, and SvanNET remote access already set. Your crew installs and starts recording, instead of assembling a system on site.
03
Applied Expertise: City-by-City Codes
A Montana threshold depends on the local ordinance, and zone limits, quiet hours, and construction allowances differ between Bozeman, Missoula, Billings, and smaller communities. Specto configures each station to the standard governing your site, with automated reports built for agency and community review.
Who Uses Specto in Montana
We don’t replace consultants — we equip them. Common users include:
Environmental consultants
Acoustical and noise-vibration consultants
Construction managers and general contractors
Montana DOT and federally funded transportation teams
Data center, resort, and infrastructure project teams
The Montana Construction Landscape
Montana is one of the fastest-growing states, and the building shows it. The Gallatin Valley around Bozeman is adding housing, mixed-use projects, and a record airport expansion as fast as it can permit them, Big Sky continues a luxury resort and hospitality build-out, and Great Falls is booming around the Sentinel missile-modernization program at Malmstrom Air Force Base. Large data-center campuses have also been proposed — including a 5,000-acre site near Broadview — though some face community debate.
Much of this work is happening in and around growing towns, on tight infill sites and along busy corridors. Continuous monitoring gives Montana teams the data they need to document conditions, respond to concerns quickly, and keep work moving.
Montana Firms Working in
Noise-Sensitive Environments
Montana’s engineering, environmental, and construction community handles the projects where noise monitoring matters most. Firms active across the state include:
Pioneer Technical Services, Inc.
Butte
Butte-based environmental and civil engineering firm providing remediation, environmental consulting, and engineering services for mining, industrial, and infrastructure projects across Montana.
Big Sky Acoustics, LLC
Helena
Independent noise consulting firm based in Helena specializing in environmental noise assessment, community and transportation noise studies, and noise-control review for projects across Montana.
Morrison-Maierle
Helena
Employee-owned, multidisciplinary engineering firm founded in Helena in 1945, providing civil, structural, mechanical, electrical, water, environmental, transportation, and survey services from offices in Billings, Bozeman, Great Falls, Missoula, Kalispell, and Helena.
Allied Engineering Services, Inc.
Bozeman
Bozeman-based firm providing civil, geotechnical, structural, and survey engineering for the fast-growing Gallatin Valley and surrounding communities, from site development through construction.
Sanderson Stewart
Billings
Community-design and civil engineering firm founded in Billings in 1969, now part of Sanbell, offering infrastructure and transportation engineering, community planning, surveying, and landscape architecture across Montana and the West.
WGM Group, Inc.
Missoula
Missoula-based engineering, surveying, planning, and environmental firm established in 1966, serving public and private clients on land development, infrastructure, and community projects across western Montana.
Working on a Montana project that needs noise monitoring? Specto supports consultants and contractors as a technology partner.
Recommended System for Montana Noise Monitoring
Svantek SV 307A Class 1 Noise Monitoring Station
Deploy once. Monitor for months.
Permanent Class 1 noise monitoring built for continuous outdoor deployment, with a patented dual-microphone system check that verifies the measurement path remotely.
Available to rent or buy from Specto's US inventory.
- Class 1 accuracy to IEC 61672-1:2013, with optional 1/1 and 1/3 octave analysis to IEC 61260-1:2014
- Noise statistics computed on the station — Ln (L1–L99), Lden, LEPd, two rolling Leq, and a complete histogram in meter mode
- Lifetime Svantek warranty on the patented MEMS microphone; three-year warranty on the instrument
- IP 54 housing rated from −20 °C to 60 °C, with 32 GB microSD storage upgradeable to 128 GB
- Patented dual-microphone system check, plus a built-in sound source producing approximately 100 dBA at 1 kHz for manual or automated verification
- Built-in 4G modem for SMS and email alarms, with results and configuration available through SvanNET
- Battery operation up to 6 days with the modem off and up to 5 days with it on, plus solar, AC, and external DC (10.5–24 V) power options
- Optional triggered audio recording and live audio streaming to support noise source identification
Our Methodology — How We Work With You
01
Discovery
We start by understanding the project, not by selling equipment. That means scope, timeline, and location; monitoring requirements and regulations; site constraints like power, connectivity, and access; and who needs the reports.
02
System Design and Preparation
We bring together the hardware, sensors, power and connectivity strategy, software setup, alerts, reporting, mounting, and accessories — then configure and prepare the system so it arrives ready for the field.
03
Delivery, Onboarding and Support
We support your team through deployment guidance, practical training, troubleshooting, reporting and alert support, and calibration and service coordination for the life of the project.
Montana Noise Monitoring — Common Questions
No. Montana regulates construction noise through local ordinances rather than a single statewide limit. Many cities use zone-based decibel limits — often around 55 dB(A) day and 50 dB(A) night in residential areas — and Bozeman sets a specific construction limit of 60 dB(A) between 8:00 p.m. and 7:00 a.m., while Missoula and others allow construction to briefly exceed the limits during permitted daytime hours. Confirm the governing rule for your site with the authority having jurisdiction.
Yes. The SV 307A is built for continuous outdoor operation in cold climates, and a heated microphone option is available to help manage freezing and high-humidity conditions. For the coldest, most exposed sites, the practical questions are enclosure siting and staying within the station's rated operating range, so it's worth confirming the deployment plan for winter work with your supplier.
Long deployments are where remote verification matters most. The SV 307A pairs a patented dual-microphone system check with a built-in sound source for manual or automated verification, so you can confirm the measurement path without a site visit, and data stays available through SvanNET for the life of the project. A built-in 4G modem sends SMS and email alerts the moment a threshold is exceeded.
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