Federal contractor profile
S.S. PAPADOPULOS & ASSOCIATES, INC.
UEI DFADX5HTRL54CAGE 036E3Company website ↗
Active
Small Business
Overview
- Legal name
- S.S. PAPADOPULOS & ASSOCIATES, INC.
- Registered location
- ROCKVILLE, MD, USA
- Website
- Company website ↗
- Primary NAICS
- 541620 — Environmental Consulting Services
- Latest award activity
- Sep 10, 2026
Read company summary
S.S. PAPADOPULOS & ASSOCIATES, INC. is associated with UEI DFADX5HTRL54 and CAGE 036E3 in public federal records. AcornBids currently links 27 prime awards totaling $16.9M in obligations to this entity. Its largest recorded federal customer by obligations is Environmental Protection Agency. Its recorded federal awards include work classified as Environmental Consulting Services; All Other Legal Services. These categories describe the loaded award records, not a complete list of company capabilities. Its primary SAM.gov NAICS is 541620 (Environmental Consulting Services). Its public SAM.gov registration lists ROCKVILLE, MD, USA.
At a glance
Lifetime prime obligations$16.9M
Prime awards27
Awards with future end dates21
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 Oct 7, 2026. Refresh pending; these totals may be out of date.
Business information
Public SAM.gov registration details.
- Legal name
- S.S. PAPADOPULOS & ASSOCIATES, INC.
- UEI
- DFADX5HTRL54
- CAGE
- 036E3
- Registered address
- 1801 ROCKVILLE PIKE, ROCKVILLE, MD, 20852, USA
- Registration status
- Active
- Primary NAICS
- 541620 — Environmental Consulting Services
- SAM activation
- Oct 24, 2025
- Initial registration
- Mar 7, 2002
- Entity start
- Oct 1, 1979
- SAM updated
- Oct 27, 2025
- Registration expires
- Oct 22, 2026
- Fiscal year end
- Dec 31
- Place of incorporation
- MD, USA
Research brief
Source facts
- Loaded prime-award records link 27 awards and $16,856,157 in reported obligations to this legal entity. Source
- Recorded awards include Environmental Consulting Services (NAICS 541620); this classification is not proof of every company capability. Source
- An example award describes: GRID BY GRID INSPECTION OF SE CORNER AT THE DENVER FEDERAL CENTER IN LAKEWOOD, COLORADO Source
Federal award analysis
Net transaction obligations by federal fiscal period.
Selected transaction obligations$11.7M
Prime contracts
Reported transaction obligations by federal fiscal period; includes deobligations. Missing transactions are not estimated. Coverage: 27 of 27 selected awards. Select a period to explore its awards.
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 |
|---|---|---|---|---|
| 47PJ0022F0508GRID BY GRID INSPECTION OF SE CORNER AT THE DENVER FEDERAL CENTER IN LAKEWOOD, COLORADO | General Services Administration | $2.1M | Oct 1, 2022 | Sep 30, 2027 |
| 68HE0524F0032GARDEN CITY GROUNDWATER PLUME SUPERFUND SITE SUPPORT UNDER GEOS4 BPA. | Environmental Protection Agency | $135.9K | Sep 30, 2024 | Sep 8, 2027 |
| 68HE0525F0002SOUTHEAST ROCKFORD GROUNDWATER CONTAMINATION SUPERFUND SITE SITEWIDE SUPPORT UNDER GEOS4 BPA. | Environmental Protection Agency | $256.4K | Jun 9, 2025 | Sep 8, 2027 |
| 68HE0525F0033GEOS4 SUPPORT FOR UNION CARBIDE, SITE B LANDFILL SUPERFUND SITE (SSID 05F4). | Environmental Protection Agency | $257.8K | Aug 11, 2025 | Sep 8, 2027 |
| 68HE0525F0066REGION 5, GROUNDWATER EVALUATION AND OPTIMIZATION SUPPORT (GEOS) PRIMARILY FOR SUPERFUND REMEDIAL PROJECT MANAGERS (RPMS). GEOS4 SUPPORT FOR FOREST WASTE PRODUCTS SUPERFUND SITE… | Environmental Protection Agency | $250.4K | Sep 29, 2025 | Sep 8, 2027 |
| 47PJ0023F0429AWARD IS FOR SITE WIDE ENVIRONMENTAL MONITORING AT THE DENVER FEDERAL CENTER IN LAKEWOOD, COLORADO. | General Services Administration | $1.1M | Oct 1, 2023 | Sep 30, 2027 |
| 68HE0525F0034GEOS4 CALL ORDER FOR ACME SOLVENT RECLAIMING SUPERFUND SITE IN ROCKFORD ILLINOIS; SITE 0579. | Environmental Protection Agency | $408.0K | Aug 25, 2025 | Sep 8, 2027 |
| 68HE0525F0008GEOS4 SUPPORT FOR BENDIX CORP./ALLIED AUTOMOTIVE SUPERFUND SITE (SSID 05AS) | Environmental Protection Agency | $380.7K | Mar 25, 2025 | Sep 8, 2027 |
| 68HE0526F0057REGION 5, GROUNDWATER EVALUATION AND OPTIMIZATION SUPPORT (GEOS) PRIMARILY FOR SUPERFUND REMEDIAL PROJECT MANAGERS (RPMS). GEOS4 FOR OTTAWA TOWNSHIP FLAT GLASS (OTFG) SUPERFUND… | Environmental Protection Agency | $226.6K | May 20, 2026 | Sep 8, 2027 |
| 140G0123F0353MT3D-USGS SOFTWARE MODERNIZATION | Department of the Interior | $142.3K | Sep 1, 2023 | Aug 31, 2028 |
Upcoming positioning windows
Modeled recompete windows are estimates, not announced solicitations or guarantees.
Registration, certifications & contacts
| Registration evidence | Date |
|---|---|
| SAM updated | Oct 27, 2025 |
| Source loaded | Sep 26, 2026 |
| Initial registration | Mar 7, 2002 |
| Entity start | Oct 1, 1979 |
Registration classifications: Small Business. These are separate from the reported certificates above.
| Industry | Reported size status |
|---|---|
| 213112 — Support Activities for Oil and Gas Operations | Not reported |
| 213113 — Support Activities for Coal Mining | Not reported |
| 213114 — Support Activities for Metal Mining | Not reported |
| 213115 — Support Activities for Nonmetallic Minerals (except Fuels) Mining | Not reported |
| 221310 — Water Supply and Irrigation Systems | Not reported |
| 513210 — Software Publishers | Not reported |
| 541330 — Engineering Services | Not reported |
| 541511 — Custom Computer Programming Services | Not reported |
| 541620 — Environmental Consulting Services | Not reported |
| 541715 — Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) | Not reported |
| 541990 — All Other Professional, Scientific, and Technical Services | Not reported |
| 562219 — Other Nonhazardous Waste Treatment and Disposal | Not reported |
| 562910 — Remediation Services | Not reported |
| 562998 — All Other Miscellaneous Waste Management Services | Not reported |
| 611420 — Computer Training | Not reported |
| Contact | Role | Published contact methods | Evidence | Source date |
|---|---|---|---|---|
| MATTHEW J TONKIN | Government business | Contact method not published | SAM registration | Not available |
| SUSAN MURRAY-WOOD | Alternate government business | Contact method not published | SAM registration | Not available |
| MATTHEW J TONKIN | Electronic business | Contact method not published | SAM registration | Not available |
| SUSAN MURRAY-WOOD | Alternate electronic business | Contact method not published | SAM registration | Not available |
Registered industries
- 213112 — Support Activities for Oil and Gas Operations
- 213113 — Support Activities for Coal Mining
- 213114 — Support Activities for Metal Mining
- 213115 — Support Activities for Nonmetallic Minerals (except Fuels) Mining
- 221310 — Water Supply and Irrigation Systems
- 513210 — Software Publishers
- 541330 — Engineering Services
- 541511 — Custom Computer Programming Services
- 541620 — Environmental Consulting Services
- 541715 — Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
- 541990 — All Other Professional, Scientific, and Technical Services
- 562219 — Other Nonhazardous Waste Treatment and Disposal
- 562910 — Remediation Services
- 562998 — All Other Miscellaneous Waste Management Services
- 611420 — Computer Training
Registration classifications and published certificates do not by themselves establish eligibility for a particular solicitation. View SAM source
Reported subsidiary tree
Ownership follows reported parent UEIs.
- S.S. PAPADOPULOS & ASSOCIATES, INC.UEI DFADX5HTRL54
- SS PAPADOPULOS & ASSOCIATES INCUEI PWF3A1DTJAM9
Corporate family
Reported ownership links. Award and funding explorers can include this family.
| Legal entity | Reported parent UEI | Source loaded |
|---|---|---|
| S.S. PAPADOPULOS & ASSOCIATES, INC. | DFADX5HTRL54 | Sep 26, 2026 |
| SS PAPADOPULOS & ASSOCIATES INC | DFADX5HTRL54 | Sep 2, 2026 |
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About S.S. PAPADOPULOS & ASSOCIATES, INC.
What products and services appear in its federal awards?
Recorded award industries: 541620 — Environmental Consulting Services; 541199 — All Other Legal Services.
Recorded products and services: F999 — Other Environmental Services, Studies, and Analytical Support; R424 — Expert Witness; F108 — Hazardous Substance Removal, Cleanup, and Disposal Services and Operational Support.
Examples from recent award records:
- GRID BY GRID INSPECTION OF SE CORNER AT THE DENVER FEDERAL CENTER IN LAKEWOOD, COLORADO
- GARDEN CITY GROUNDWATER PLUME SUPERFUND SITE SUPPORT UNDER GEOS4 BPA.
These records describe federal award work, not every company capability. Review the award evidence.
Where is the company registered?
1801 ROCKVILLE PIKE, ROCKVILLE, Maryland 20852, United States
Registered location from SAM.gov; award performance locations may differ.
What is its primary registered industry?
541620 — Environmental Consulting Services.
Primary SAM.gov NAICS classification.
Which federal agencies are represented in its awards?
Environmental Protection Agency; Department of Justice; General Services Administration.
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.
Disclosed relationships only. Missing records do not establish that a contractor has no partners. Ambiguous parent award identifiers are excluded.
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