Active
Small Business
Overview
- Legal name
- SIEGEL ENVIRONMENTAL LLC
- Registered location
- MILL VALLEY, CA, USA
- Website
- Company website ↗
- Primary NAICS
- 541330 — Engineering Services
- Latest award activity
- Jan 24, 2024
Read company summary
SIEGEL ENVIRONMENTAL LLC is associated with UEI PHGNCSNZMF14 and CAGE 7M0W5 in public federal records. AcornBids currently links 1 prime award totaling $1.0M in obligations to this entity. Its largest recorded federal customer by obligations is Department of Justice. Its recorded federal awards include work classified as All Other Legal Services. These categories describe the loaded award records, not a complete list of company capabilities. Its primary SAM.gov NAICS is 541330 (Engineering Services). Its public SAM.gov registration lists MILL VALLEY, CA, USA.
At a glance
Lifetime prime obligations$1.0M
Prime awards1
Awards with future end dates1
Top-agency concentration
Not available
Why this customer concentration
Detailed agency totals are not available in this stored profile.
Largest positive coded-agency total ÷ all positive coded-agency totals × 100
Missing data is shown as unavailable.
Prime contract obligations across loaded award records. Obligations are not revenue or contract ceilings. Summary updated Sep 28, 2026. Refresh pending; these totals may be out of date.
Business information
Public SAM.gov registration details.
- Legal name
- SIEGEL ENVIRONMENTAL LLC
- UEI
- PHGNCSNZMF14
- CAGE
- 7M0W5
- Registered address
- 319 LAUREL WAY, MILL VALLEY, CA, 94941, USA
- Registration status
- Active
- Primary NAICS
- 541330 — Engineering Services
- SAM activation
- Feb 5, 2026
- Initial registration
- May 2, 2016
- Entity start
- Jan 29, 2015
- SAM updated
- Feb 5, 2026
- Registration expires
- Feb 3, 2027
- Fiscal year end
- Dec 31
- Place of incorporation
- CA, USA
Federal award analysis
Net transaction obligations by federal fiscal period.
Transaction history is not available in the loaded data. Annual funding is not estimated from current award totals.
Recent federal awards
Prime contract awards. Select an award to review its history and source evidence.
| Award / description | Awarding agency | Obligations | Start date | End date |
|---|---|---|---|---|
| 15JENR18P00000207YIO JENRD1804821 DJJ-17W-ENR01-0207 YREGDOC S0147191. | Department of Justice | $1.0M | Mar 1, 2018 | Feb 1, 2028 |
Upcoming positioning windows
Modeled recompete windows are estimates, not announced solicitations or guarantees.
Registration, certifications & contacts
| Registration evidence | Date |
|---|---|
| SAM updated | Feb 5, 2026 |
| Source loaded | Sep 26, 2026 |
| Initial registration | May 2, 2016 |
| Entity start | Jan 29, 2015 |
Registration classifications: Small Business. These are separate from the reported certificates above.
| Industry | Reported size status |
|---|---|
| 541330 — Engineering Services | Not reported |
| 541620 — Environmental Consulting Services | Not reported |
| 541714 — Research and Development in Biotechnology (except Nanobiotechnology) | Not reported |
| 541715 — Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) | Not reported |
| Contact | Role | Published contact methods | Evidence | Source date |
|---|---|---|---|---|
| STUART SIEGEL | Government business | Contact method not published | SAM registration | Not available |
| STUART SIEGEL | Electronic business | Contact method not published | SAM registration | Not available |
Registered industries
- 541330 — Engineering Services
- 541620 — Environmental Consulting Services
- 541714 — Research and Development in Biotechnology (except Nanobiotechnology)
- 541715 — Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
Registration classifications and published certificates do not by themselves establish eligibility for a particular solicitation. View SAM source
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About SIEGEL ENVIRONMENTAL LLC
What products and services appear in its federal awards?
Recorded award industries: 541199 — All Other Legal Services.
Recorded products and services: R424 — Expert Witness.
Examples from recent award records:
These records describe federal award work, not every company capability. Review the award evidence.
Where is the company registered?
319 LAUREL WAY, MILL VALLEY, California 94941, United States
Registered location from SAM.gov; award performance locations may differ.
What is its primary registered industry?
541330 — Engineering Services.
Primary SAM.gov NAICS classification.
Which federal agencies are represented in its awards?
Department of Justice.
Data coverage and methodology
Sources: SAM.gov registration, USAspending awards and transactions, and linked supporting records. Prime contract obligations, IDV ceilings and assistance amounts are kept separate. Missing records are not zero activity. Company claims are labeled separately. Recompete signals are rule-based scores out of 100. Positioning windows are AcornBids estimates.
No official subaward rows are loaded, so Acorn does not claim known teaming relationships.
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