Business Details
Trusted Environmental Consulting Services in San Francisco
GEOTERREN Environmental Services has been delivering specialized environmental consulting solutions for over 30 years, serving Northern California and the Greater San Francisco Bay Area. Founded on principles of technical excellence and client-focused service, our team of certified professionals specializes in Phase 1 and Phase 2 Environmental Site Assessments, vapor intrusion evaluations, drinking water safety testing, and regulatory compliance support. We combine decades of field experience with advanced scientific methodologies to provide cost-effective, data-driven solutions for commercial property due diligence, contamination investigation, and remediation.Our expertise extends to peer review services for environmental professionals and litigation support for attorneys, ensuring technical accuracy and defensible results. With a commitment to expeditious project delivery and transparent communication, we help clients navigate complex environmental challenges while maintaining strict adherence to ASTM standards and EPA guidelines. Our scientific illustration capabilities further enhance client understanding through visual representation of subsurface conditions and contaminant pathways.
Services
Phase 1 Environmental Assessments
Phase 2 Site Investigations
Vapor Intrusion Testing
Drinking Water Analysis
Peer Review Services
Litigation Support
Scientific Illustration
Environmental Transaction Screens
Desktop Review Reports
Site Closure Assistance
Highlights and features
- We offer 30+ years of specialized experience in Northern California environmental assessments
- Our team includes certified professionals with P.G. and C.HG. credentials
- We implement ASTM E1527-13 standard compliant assessment methodologies
- We provide cost-effective solutions with competitive pricing structures
- Our scientific illustration services enhance technical communication and understanding
Services
Phase 1 Environmental Site Assessments
Our Phase 1 Environmental Site Assessments identify potential contamination risks for commercial properties through comprehensive database checks, site inspections, and historical record reviews. We follow ASTM E1527-13 standards to evaluate environmental liabilities, including radius map analysis, vapor encroachment screening, and regulatory file reviews. This service provides legal protection under All Appropriate Inquiries while delivering defensible reports within 10-15 business days.
Phase 2 Environmental Site Assessments
Phase 2 assessments confirm contamination presence through targeted soil, groundwater, and indoor air sampling programs. Our 30+ years of experience enables efficient investigation design that minimizes costs while maximizing data quality. We specialize in petroleum hydrocarbon and chlorinated solvent analysis for dry cleaners, gas stations, and industrial sites, delivering actionable remediation recommendations based on regulatory screening levels.
Vapor Intrusion Assessment
We evaluate vapor intrusion risks by analyzing indoor air quality for volatile organic compounds from nearby contamination sources. Our assessments include 24-hour residential and 8-hour commercial sampling, comparing results to regional water board screening levels. This service helps property owners understand exposure risks and regulatory compliance requirements for subsurface contaminants.
Scientific Illustration Services
Our Adobe Illustrator-based scientific illustrations transform complex environmental data into clear visual representations. We create conceptual site models, geologic cross-sections, and contamination maps that integrate boring logs, MIP data, and chemical concentrations. These visual tools enhance regulatory communication and support expert witness testimony through accurate subsurface condition depictions.
Peer Review Services
We provide independent evaluation of environmental reports, data validity, and remediation strategies for stakeholders and legal professionals. Our peer review service assesses investigative effectiveness, cost reasonableness, and regulatory compliance while offering demonstratives for litigation support. This service helps clients verify technical soundness and optimize environmental project outcomes.
People
Tina M. Hariu
Environmental Professional
Certified Professional Geologist with over 30 years of experience in Northern California environmental assessments. Specializes in Phase 1 and Phase 2 Site Assessments, vapor intrusion evaluations, and scientific illustration for regulatory compliance.
Questions
What is a Phase 1 Environmental Site Assessment?
A Phase 1 ESA involves property history review, site inspection, and regulatory database checks to identify potential environmental concerns following ASTM standards.
How does vapor intrusion affect property safety?
Vapor intrusion occurs when subsurface contaminants migrate into buildings, potentially exposing occupants to harmful chemicals like VOCs from dry cleaners or gas stations.
What does your drinking water testing include?
We test for lead, nitrites, e-coli, and common contaminants, comparing results to regional environmental screening levels to ensure water safety.
How do you handle site closure processes?
We navigate regulatory requirements to achieve efficient site closures by designing targeted investigations and collaborating with remediation experts.
What peer review services do you offer?
We evaluate environmental reports, data validity, and remediation costs while providing demonstratives for legal proceedings and technical second opinions.
What turnaround times do you offer for assessments?
Phase 1 ESAs deliver in 10-15 business days, Environmental Transaction Screens in 7-10 days, and Desktop Reviews in 3-5 days.
