This Government Contract opportunity from Department Of The Interior was posted on June 30, 2026. The submission period has ended. Browse the details below for market research, or find similar active opportunities.

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66--infrasound acoustic monitors

Closed

140G0326Q0153Federal

Submission Closed07/11/2026, 12:00:00 AM UTC

Contract Overview

Solicitation details, issuing organization, response deadlines, documents, and interested companies for this government contract opportunity.

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NAICS: 334515

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AI Contract Overview

The U.S. Geological Survey intends to award a sole-source purchase order to Chaparral Physics Geophysical Institute of the University of Alaska in Fairbanks for infrasound acoustic monitors to support volcano monitoring, based on the unique technical capabilities of their sensor system. The acquisition is governed by FAR Part 12 as a commercial product purchase, and the sensors must meet stringent performance requirements including a nominal sensitivity of .0275V/Pa@1Hz or greater, a full-scale range of 720Pa peak to peak or higher, a dynamic range of 110dB or more, and an operating temperature range of -40C to +65C. The sensors must be existing products with an established production and performance history, with no modifications or new designs permitted. Each sensor must have power consumption under 150mW, be housed in a corrosion-resistant, ground-isolated enclosure no larger than 4 inches in diameter and 3.5 inches tall, and have calibration traceable to a nationally accredited external laboratory within ±5% of nominal values. Crucially, all sensors in an array must have verified equal sensitivity to enable accurate noise cancellation via software processing. Delivery of all units is required by September 30, 2026. This action is documented as a notice of intent to solicit from a single source under FAR 5.101(c)(4)(vii), with no formal solicitation to be issued. Responses in the form of capability statements from other qualified parties may be submitted electronically to [email hidden] by July 10, 2026 at 5:00 PM Pacific Daylight time; submissions via hardcopy or SAM.gov are not accepted. The applicable NAICS code is 334515 with a size standard of 750, and the award will be made based on the agency’s determination that Chaparral Physics is the only source capable of meeting the specialized requirements for high-sensitivity, low-power, consistent infrasound measurements under extreme ambient conditions.

General Info

Chaparral Physics to supply sole-source infrasound sensors meeting strict performance, power, and environmental specs for volcanic monitoring by Sept 30, 2026.

Agency

Department Of The Interior → Office Of Acquisiton Grants

NAICS

334515 - Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals

Place of Performance

Set-Aside

NONE

Documents

USGS Acoustic Monitoring Sensor Technical Specifications

specifications

High

AI Contract Breakdown

Uniform Contract Format

Timeline

PhaseClosed

PostedJun 30

special-notice

Response DeadlineJul 11

Deadline has passed

Submission Closed

07/11/2026, 12:00:00 AM UTC

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Organization & Contact Information

AgencyDepartment Of The Interior → Office Of Acquisiton Grants

Contacts1 person available

OfficeSACRAMENTO, CA, 95819, USA

Organization / AgencyDepartment Of The Interior → Office Of Acquisiton Grants

Office AddressSACRAMENTO, CA, 95819, USA

Contacts

Huot Tracy

contact@example.gov

+1 (555) 000-0000

Full Description

This is a notice of intent to solicit from a single source.

The U.S. Geological Survey (USGS), intends to award a purchase order with Chaparral Physics Geophysical Institute of the University of Alaska in Fairbanks, Ak for infrasound acoustic monitors as described in the required specifications attached.

Award will be made in accordance with Federal Acquisition Regulation FAR Part 12 Acquisition of Commercial Products and Commercial Services. Chaparral Physics is, to the USGS knowledge, the only source who meets the ability for infrasound sensor requirements for measuring a range of very weak to very strong infrasound acoustic signals in the frequency range produced by volcanoes are stringent. Ever-changing volcanic, meteorologic, and local environmental conditions means that measurements must be acquired at least one hundred times per second to detect signals of interest. For infrasound measurements, this means that the instrument sensitivity must be sufficient to obtain an adequate signal-to-noise ratio for the acoustic measurement in as short of an integration time as possible. This application measures acoustic signals travelling through the atmosphere which are affected by the previously mentioned changing conditions. Software compares the signals from all the sensors in the array to identify local noise conditions and filter their negative effect out of the acoustic signal produced by the volcano. All the infrasound sensors in the array must have tested and verified equal sensitivity for processing software to achieve the desired noise cancellation effect. The Chaparral sensor meets the environmental requirements and has a power consumption less than 150mW, which is the only known source for small solar based systems.

The purpose of this notice is to satisfy the requirements of FAR 5.101(c)(4)(vii). This notice of intent is not a request for competitive quotes. However, all responsible parties may submit a capability statement by the closing date of this announcement which shall be considered by the agency. No solicitation will be issued. A determination not to compete this action based upon responses received is in the sole discretion of the Government.

The applicable North American Industry Classification System (NAICS) code is 334515 Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals, with the associated size standard of 750

Responses or inquiries shall only be accepted through electronic mail addressed to contact@example.gov and must be uploaded and received in their entirety no later than 07/10/1700 PD. Responses submitted by hardcopy or the SAM.gov portal shall not be accepted or considered.