STS Environmental

Environmental Risk,
Managed With Certainty.

Environmental engineering is a core discipline at STS — not a secondary service. Phase 1 & 2 ESAs, contaminated land assessment, remediation, and compliance reporting, delivered alongside geotechnical engineering by the same team with in-house drilling through GeoSense.

1988
Operating since
NATA
Accredited laboratory
NEPM
Compliant assessment
What We Do

Environmental Engineering
as a Core Service

STS Environmental site assessment
NEPM Compliant
Phase 1 & 2 ESA · Contaminated Land · Remediation · Validation

Environmental consulting is a core discipline at STS — not a secondary service bolted on to geotechnical. Contaminated land assessment, Phase 1 and 2 Environmental Site Assessments, remediation management, and compliance reporting are delivered by the same committed team, with the same rigour as our geotechnical work.

Where a project involves both geotechnical and environmental risk — a brownfield development, a contaminated industrial site, or a site with complex ground conditions and legacy contamination — STS manages both streams from a single point of contact. There is no internal handoff between departments, and no external referral to separate consultants.

Field drilling, intrusive sampling, and monitoring well installation are carried out by GeoSense, our in-house drilling arm, so the data behind every environmental recommendation comes from our own crews, not a disconnected subcontractor.

Contamination Assessment Site Remediation Risk & Compliance Phase 1 & 2 ESA NEPM Reporting Acid Sulfate Soils
Environmental Engineering

Environmental Risk,
Managed

Phase 1 Environmental Site Assessment

Desktop & preliminary review of site history, land use, and contamination potential.

Phase 2 Environmental Site Assessment

Intrusive sampling and laboratory analysis to confirm and characterise suspected contamination.

Contaminated Land Assessment

Risk assessment and management advice for development on, or near, contaminated land.

Remediation Action Plans

Practical remediation strategies and oversight to bring sites to a condition suitable for development.

Validation & Compliance Reporting

Validation reporting and regulatory liaison to support planning approvals and council sign-off.

Acid Sulfate Soil Assessment

Identification and management advice for acid sulfate soils on coastal and low-lying sites.

Work With Us

Ready to Start
Your Investigation?

Tell us about your project and site. We'll respond within one business day with an investigation approach and fixed-fee proposal.

Send an Enquiry +61 2 9756 2166