Business Details
Environmental Engineering & Methane Mitigation Experts
Terra Petra has been a leader in environmental engineering for over two decades, specializing in methane and soil gas mitigation. Our expertise begins with comprehensive soil gas characterization and extends to designing and inspecting gas mitigation systems for diverse building types. We prioritize safety through rigorous 40-hour HAZWOPER training for all staff, maintaining a zero-incident record in field operations. Our team played a pivotal role in developing the Los Angeles Methane Code and remains at the forefront of regulatory compliance and innovative solutions. With thousands of completed soil gas investigations nationwide, we offer engineered systems for vapor intrusion prevention, site remediation, and waterproofing.Our approach combines technical excellence with practical problem-solving, serving clients in real estate development, construction, and environmental compliance. We maintain strong relationships with regulatory agencies to expedite project approvals while ensuring environmental stewardship. Our sister company, Building Waterproofing Experts, expands our capabilities in below-grade waterproofing solutions. Terra Petra's multidisciplinary staff includes civil engineers, environmental assessors, and geologists who deliver tailored solutions for complex environmental challenges. We pride ourselves on being both methane educators and problem solvers, simplifying complex regulatory requirements for our clients.
Services
Phase I Environmental Assessment
Methane Inspections
Waterproofing Inspections
Soil Gas Investigation
Vapor Intrusion Mitigation
Site Remediation
Construction Inspection
Environmental Consulting
Methane Testing
Regulatory Compliance
Highlights and features
- We have 20+ years of specialized experience in methane and soil gas mitigation.
- Our team includes certified environmental assessors and HAZWOPER-trained professionals.
- We maintain a zero-incident safety record in field operations.
- We pioneered solutions for Los Angeles Methane Code compliance.
- We offer nationwide service with local regulatory expertise in multiple states.
What people say
Cutting edge experience
Creative solutions
Excellent service
Knowledgeable professionals
Flexible approach
Services
Phase I Environmental Assessment
Our Phase I Environmental Site Assessments identify potential contamination liabilities through historical research, site inspections, and regulatory reviews. This service helps property buyers and developers meet lender requirements and regulatory standards while protecting investments. Our experts deliver actionable reports that guide decision-making for commercial real estate transactions.
Methane Inspections
We conduct comprehensive methane inspections to detect soil gas concentrations in development zones. Our certified professionals use advanced testing methods to assess explosion risks and ensure compliance with Los Angeles Methane Code requirements. These inspections help developers implement appropriate mitigation systems for building safety and regulatory approval.
Waterproofing Inspections
Our waterproofing division specializes in below-grade structure protection through rigorous system inspections. We ensure proper installation of waterproofing membranes and drainage systems for foundations, decks, and green roofs. These inspections prevent water intrusion issues while maintaining compliance with construction standards for long-term building integrity.
Soil Gas Investigation
We perform soil gas investigations to detect volatile organic compounds and methane concentrations beneath properties. This service identifies contamination sources and migration pathways through subsurface sampling. Our findings support vapor intrusion mitigation strategies and regulatory reporting requirements for contaminated land developments.
Vapor Intrusion Mitigation
We design and implement vapor intrusion mitigation systems to prevent hazardous gas migration into buildings. Our engineered solutions include sub-slab depressurization systems and passive/active gas barriers. These systems protect indoor air quality while meeting environmental regulations for properties affected by soil gas contaminants.
People
Kevin Buchanan
President and Owner
Kevin Buchanan leads Terra Petra's strategic direction and business development. With extensive environmental engineering experience, he ensures the company maintains technical excellence and client-focused solutions for methane mitigation and environmental compliance projects.
Justin Conaway
Vice President/General Manager
Justin Conaway oversees Terra Petra's daily operations and project execution. He manages technical teams to deliver high-quality environmental assessments and methane mitigation solutions while maintaining strong client relationships and regulatory compliance standards.
Daniel Valdez
Director of Field Operations
Daniel Valdez supervises field personnel and inspection activities. He ensures all methane testing, soil gas investigations, and waterproofing inspections meet company standards through rigorous quality control processes and safety protocol enforcement.
Nikolaus Reppuhn
Professional Engineer
Nikolaus Reppuhn provides engineering expertise for methane mitigation system designs. He develops customized solutions for vapor intrusion prevention and ensures technical compliance with local building codes and environmental regulations across multiple jurisdictions.
Hugh Avery
Senior Consultant
Hugh Avery offers specialized consulting on complex environmental projects. He interprets regulatory requirements and develops practical solutions for methane mitigation challenges, leveraging decades of experience in environmental engineering and risk assessment.
Questions
What environmental services does Terra-Petra offer?
We provide Phase I/II environmental assessments, methane testing, vapor intrusion mitigation, soil gas investigations, waterproofing inspections, and regulatory compliance solutions.
Why are methane inspections important?
Methane inspections identify explosive gas risks in development zones, ensuring building safety and compliance with Los Angeles Methane Code requirements for property development.
How does Terra-Petra handle regulatory compliance?
Our team understands complex environmental regulations across jurisdictions, maintaining strong agency relationships to streamline approvals and ensure code-compliant solutions.
Do you work outside Southern California?
While based in Los Angeles, we complete projects nationwide, including Detroit and Orange County, adapting solutions to local regulatory environments.
What makes your waterproofing services unique?
Our sister company Building Waterproofing Experts provides specialized below-grade protection systems, with inspections ensuring long-term performance of foundation and deck waterproofing installations.
How do you ensure project safety?
All staff complete 40-hour HAZWOPER training, and we maintain a zero-incident record through rigorous safety protocols during field operations and construction inspections.
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