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Logo of jrl holzmacher engineering featuring a stylized blue atomic symbol next to the company name written in sleek, modern fonts.
  • Services
  • Selected CapabilitiesExpand
    • Architectural Design
    • Architectural Engineering Support
    • Brownfields Site Investigation And Remediation Support
    • Construction Observation And Documentation
    • Denitrification Treatment (IA) Systems
    • Due Diligence Phase I & Phase II Environmental Site Assessments
    • Electrical Controls
    • Expert Testimony And Forensic Investigation
    • Forensic Insurance Investigation
    • Geotechnical Reporting And Site Evaluations
    • Mechanical & Electrical Site Layout
    • Potable Well And Water System Design
    • Residential Design
    • Road And Drainage Improvements
    • Site Planning & Construction Design
    • Special Inspection And Certification
    • Stormwater Abatement Design
    • Stormwater Pollution Prevention Plans And Inspection Services
    • Structural Design
    • Swimming Pool Design & Permitting
    • Wastewater Outfall Design
  • Selected Clients
  • About Us
  • Contact Us
Logo of jrl holzmacher engineering featuring a stylized blue atomic symbol next to the company name written in sleek, modern fonts.

Representative Projects

About Representative Projects


The Industry we serve has allowed us to work on a diversity of Engineering and Environmental projects. The following is only a representative array of works in progress and completed works portraying experience in being able to get things done.

A mural on an urban street wall depicting various figures and scenes, with a sidewalk and a lamp post in the foreground, symbolizes groundwater remediation efforts.

Water Supply And Municipal Engineering

Residential construction site with incomplete in-ground pools and houses in the background, undergoing groundwater remediation.

Infrastructure Design

Person in purple gloves handling wooden sticks on a muddy surface during Environmental Cleanup.

Environmental Services

Construction workers in hard hats engaging in environmental cleanup at a road construction site.

Construction Observation

Construction site with unfinished concrete foundations, wooden formwork, and groundwater remediation.

Structural Design

Demolition site with rubble, heavy machinery, and groundwater remediation equipment.

Litigation Support

Residential construction site with partially built wooden structures and building materials in the foreground, undergoing groundwater remediation.

Subdivision Layout

Homebrewing equipment with beer in fermentation stage inside a stainless steel bucket, incorporating water treatment processes.

Groundwater Remediation

Logo of jrh consulting engineers + architects, dpc, featuring a stylized geometric symbol alongside the company name in light gray, elegant font.

Engineering and Architectural services for commercial, residential, and governmental projects in New York State.

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Contact Info

Phone (631) 234 – 2220

Fax (631) 234 – 2221

Email [email protected]

Address 3555 Veterans Memorial
Hwy Suite A
Ronkonkoma, NY 11779-7636

© 2025 JRH Consulting Engineers + Architects, D.P.C. - All Right Reserved | Website By: WELL DRESSED WALRUS

  • Services
  • Selected Capabilities
    • Architectural Design
    • Architectural Engineering Support
    • Brownfields Site Investigation And Remediation Support
    • Construction Observation And Documentation
    • Denitrification Treatment (IA) Systems
    • Due Diligence Phase I & Phase II Environmental Site Assessments
    • Electrical Controls
    • Expert Testimony And Forensic Investigation
    • Forensic Insurance Investigation
    • Geotechnical Reporting And Site Evaluations
    • Mechanical & Electrical Site Layout
    • Potable Well And Water System Design
    • Residential Design
    • Road And Drainage Improvements
    • Site Planning & Construction Design
    • Special Inspection And Certification
    • Stormwater Abatement Design
    • Stormwater Pollution Prevention Plans And Inspection Services
    • Structural Design
    • Swimming Pool Design & Permitting
    • Wastewater Outfall Design
  • Selected Clients
  • About Us
  • Contact Us
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