Site Investigation
Phase I & II Site Assessments
Comprehensive due diligence investigations that identify environmental liabilities before they become project-stopping surprises. ASTM-compliant, lender-ready deliverables.
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Solving Environmental Challenges Through Science.
Flatirons Environmental Solutions delivers full-service environmental science and engineering solutions across construction, oil and gas, industrial, and government sectors — from early planning and permitting through active compliance and project closure. Our environmental scientists and engineers bring the technical depth and regulatory experience your project demands, at every stage.
Core Capabilities
Full-Spectrum
Environmental Services
Compliance
Environmental Compliance Support & Development
Ongoing compliance program development and management — SPCC, hazardous waste, air quality, groundwater monitoring, and multi-media audits — so your facility stays in compliance across every regulatory framework.
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Stormwater
SWPPP Development & Compliance
Permit-ready Stormwater Pollution Prevention Plans, BMP inspections, and ongoing compliance support for construction sites of all sizes.
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Compliance
Construction & Industrial Compliance
Air quality, waste management, spill prevention, and permit compliance programs that keep your operations running and your permits intact.
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Oil & Gas
Oil & Gas Environmental Programs
Exploration, production, and midstream compliance — from SPCC plans to reclamation — tailored to state and federal regulatory requirements.
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The Right Team for Complex Environmental Work
Flatirons Environmental Solutions brings scientific depth, field experience, and regulatory fluency to every engagement — so your compliance program holds up when it matters most.
Regulatory Fluency
Deep familiarity with state and federal regulatory frameworks. We know what agencies expect and how to deliver it.
Field-First
We work on-site, not just from the office — real conditions, real solutions, not desk-bound report writing.
Deadline-Driven
Schedules don't wait. We structure our work around your critical path, not the other way around.
Technical Writing Expertise
Our reports, plans, and permit applications are clear, thorough, and written to hold up under agency review — the first time.
Who We Serve
Serving a Wide Range of Clients
Construction & Development
Contractors and developers managing environmental permitting and compliance across linear and site-based projects — pipelines, transmission lines, roads, and land development — from planning through closure.
Oil & Gas Operators
Upstream, midstream, and downstream operators navigating environmental permitting, compliance, reclamation, and state and federal regulatory programs from planning through closure.
Industrial Facilities
Manufacturing, processing, and utility facilities managing environmental permitting, air, water, groundwater, and waste compliance across multiple regulatory frameworks.
Government & Government Contractors
Government agencies and government contractors requiring environmental permitting, documentation, NEPA support, remediation oversight, and compliance programs from planning through closure.
Property Owners & Developers
Landowners, developers, and lenders requiring Phase I/II assessments, environmental due diligence, and regulatory support from acquisition through project completion.
Get Started
Ready to Get Your Project Into Compliance?
Tell us about your project. We'll respond within one business day with a clear scope and timeline.