Quadrant Consultants Inc


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Environmental Services

Quadrant's experienced staff includes environmental scientists who understand both public works projects and the environment, and know how to make clients' projects environmentally friendly while achieving their goals. We have substantial experience in preparing categorical exclusions (CE); environmental assessments (EA), and environmental impact statements (EIS) for transit, roadway and aviation design projects. We also do noise and air quality modeling, wetland and vegetation assessment, and socioeconomic studies.

Environmental Impact Statement

Environmental Assessment

Categorical Exclusion

Phase I ESA + Phase II + Phase III

  • Study and Report

  • Data Sampling and Laboratory Analysis

  • Remediation

Hazardous Materials Assessment

Ecological, Threatened and Endangered Species Studies

Land Use and Socioeconomics Studies

Wetland Delineation and Jurisdictional Determination

  • Section 404 / 10 Permit

  • Nationwide Permit

  • Mitigation Design

  • Mitigation Compliance


  • TxDOT – Pre-Certified in Major Environmental Categories

  • City of Houston – Certified DBE and MBE

  • METRO – Certified SBE

Environmental Projects