# NOTICE OF INTENT TO SOLE SOURCE: TSI Incorporated Quest Edge 8M Noise Dosimeters (Part Number: TSI 5EG8M-BT-D) and Microphones (Part Number: MIC-EG8)

Canonical: https://abierto.us/opportunities/dosimeters

- Solicitation number: Dosimeters
- Notice type: Presolicitation
- Status: Closed. Deadline was June 15, 2026 at 5:00 PM EDT
- Department: Department of Labor
- Agency: Office of the Assistant Secretary for Administration and Management
- Contracting office: Dol - Cas Division 4 Procurement (1605C4)
- NAICS: 334519 Other Measuring and Controlling Device Manufacturing
- Product or service code: 6635 Physical Properties Testing and Inspection
- First posted: May 29, 2026
- Last posted: June 1, 2026
- SAM.gov: https://sam.gov/workspace/contract/opp/5bd6d55973f9495dab1452fbc90350a8/view

## Description

THIS IS NOT A REQUEST FOR PROPOSAL. THIS IS A NOTICE OF THE GOVERNMENT'S INTENT TO ISSUE A SOLE SOURCE CONTRACT TO TSI INCORPORATED TO ASSIST THE U.S. DEPARTMENT OF LABOR'S (DOL), MINE SAFETY AND HEALTH ADMINISTRATION (MSHA), MINE SAFETY AND HEALTH ENFORCEMENT. This effort is to procure TSI Incorporated Quest Edge 8M Noise Dosimeters (Part Number: TSI 5EG8M-BT-D) and Microphones (Part Number: MIC-EG8) that TSI Incorporated has created specifically for MSHA.

The TSI Incorporated Quest Edge 8M Noise Dosimeter and Microphone are the only products for this requirement that have received MSHA approval as intrinsically safe for use in underground coal mines. This is a sole source notice published for informational purposes only and not a request for competitive proposals. Therefore, no solicitation documents exist for this requirement.

However, all responsible parties interested in responding to this notice are invited to submit a capability statement by Monday, 06/15/2026, 5:00 pm ET, that provides sufficient details for consideration by the Government, via email to:

proietto.ryan.v@dol.gov and jackson.alicia.m@dol.gov. The determination not to compete the contract based on the responses to this notice is solely within the discretion of the Government. All information submitted should support the offeror's capability to provide the products required and shall be furnished at no cost or obligation to the Government. Responses must be in writing and must provide clear and concise documentation indicating an offeror's bona fide capability to provide these products. The Government reserves the right to cancel this requirement.

## Publications

- May 29, 2026: Presolicitation, due May 15, 2026 at 5:00 PM EDT. Notice ecd82728e5794138b63224f731db765a. https://sam.gov/workspace/contract/opp/ecd82728e5794138b63224f731db765a/view
- June 1, 2026: Presolicitation, due June 15, 2026 at 5:00 PM EDT. Notice 3b2a258722e042908782261b7da6acd6. https://sam.gov/workspace/contract/opp/3b2a258722e042908782261b7da6acd6/view
- June 1, 2026: Presolicitation, due June 15, 2026 at 5:00 PM EDT. Notice 5bd6d55973f9495dab1452fbc90350a8. https://sam.gov/workspace/contract/opp/5bd6d55973f9495dab1452fbc90350a8/view

## Points of contact

- Ryan Proietto, proietto.ryan.v@dol.gov
- Alicia Jackson, jackson.alicia.m@dol.gov

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Source: SAM.gov Contract Opportunities bulk extract. Confirm deadlines on SAM.gov before responding. Cite https://abierto.us/opportunities/dosimeters.