UEI: M6LSXNA1NF95 • CAGE: 1F4E9

Expired

WALTER R. NIESSEN (MA)

DBA: NIESSEN CONSULTANTS

Registration facts

SAM.gov registration as of Dec 15, 2025

SAM.gov registration: Expired; Registration expiration date Mar 13, 2025

Registration

UEI: M6LSXNA1NF95
CAGE code: 1F4E9
Doing business as: NIESSEN CONSULTANTS
Entity structure: Sole Proprietorship
Business start date: Jan 1, 1983 (43 years)
State: MA

SBA certifications

No certification in the SBA profile data.

Business types self-reported in SAM.gov registration:

Veteran-Owned Business

NAICS codes

Product and service codes (PSC)

AH22NATURAL RESOURCES AND ENVIRONMENT R&D SERVICES; CONSERVATION AND LAND MANAGEMENT; APPLIED RESEARCH
B510SPECIAL STUDIES/ANALYSIS- ENVIRONMENTAL ASSESSMENTS
R425SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL

All federal contractors in Massachusetts How these figures are built

Source: SAM.gov entity registration for WALTER R. NIESSEN. Contact details and street address are not published for this record.

Key Performance Statistics

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Capabilities

NAICS Codes

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Product/Service Codes

As of Dec 15, 2025. Source: SAM.gov Goods & Services.

AH22- NATURAL RESOURCES AND ENVIRONMENT R&D SERVICES; CONSERVATION AND LAND MANAGEMENT; APPLIED RESEARCH

B510- SPECIAL STUDIES/ANALYSIS- ENVIRONMENTAL ASSESSMENTS

R425- SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL

Certifications

Self-Certifications

Veteran-Owned Business

Business Types

For Profit Organization

Federal Capability Statement

Engineering Studies for all types of Waste Management with special skills in Incineration, Air Pollution Control and other Environmental Assignments in US and internationally. Extensive publications, experience in technology transfer.

Capabilities & Services

Incineration

Combustors

Air Pollution

Chemical Engineering

Environmen'l Consult

Permitting

Process Analysis

Studies

Waste Management

TDA

Contracts

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Additional Details

As of Dec 15, 2025. Source: SAM.gov Entity Registration.

WALTER R. NIESSEN has no active federal suspension or debarment on record in SAM.gov. Current SAM.gov registration expires March 13, 2025.

Source: SAM.gov entity registration (FAR responses, registration status). Always verify active exclusions against the authoritative record on SAM.gov before contract award.

Compliance & Risk Assessment

Source: SAM.gov FAR responses

Suspension/Debarment Status

SAM.gov registration reports no active exclusion

Public Display

Entity information is publicly displayed

Business Structure

Source: SAM.gov

Entity Structure:Sole Proprietorship

CAGE Code:1F4E9

Registration Details

Source: SAM.gov

Date Founded

Jan 1, 1983

Initial Registration

Last Update

Mar 13, 2025

Registration Activation

Active — Mar 15, 2024

Registration Expiration

Mar 13, 2025

Fiscal Year End

12/31

State of Incorporation

Country of Incorporation

USA