A Fun-Filled Day At The Annual Terra-Petra Summer Picnic

February 20, 2026
Terra-Petra Company News, Terra-Petra News

A Fun-Filled Day At The Annual Terra-Petra Summer Picnic

Thank you to everyone who came out to the annual Terra-Petra Summer Picnic this year.  It’s always nice to connect outside the office with friends, family, co-workers and colleagues who help make Terra-Petra successful. It was a wonderful event, and a great day to be outdoors enjoying the summer weather.

The event was held this year at Rancho Los Cerritos in Long Beach, and we couldn’t have asked for a better setting.  The day was made extra special with delicious food from Marhalls’ Bodacious BBQ and live music and entertainment supplied by Common Allies along with a fun, and competitive, few rounds of bingo.

Thank you again to everyone who was able to join us this year, and thank you for being a part of Terra-Petra’s continued growth and success.

We look forward to seeing you all at the next Terra-Petra event!

EVENT GALLERY (Click on any photo to enlarge)

Terra-Petra’s Justin Conaway To Speak At AVIP’s 3rd Vapor Intrusion Conference

February 20, 2026
Environmental Engineering, Terra-Petra Company News, Terra-Petra Leadership, Terra-Petra News, Terra-Petra Press, Vapor Intrusion, Vapor Intrusion Mitigation System, Vapor Intrustion Mitigation

Terra-Petra's Justin Conaway To Speak At AVIP's 3rd Vapor Intrusion Conference

Terra-Petra Vice President and General Manager Justin Conaway is set to be a speaker at the AVIP’s 3rd Vapor Intrusion Conference October 20-23, 2024.  Justin will speak on Wednesday Oct 23rd at 9:25am discussing “Criteria for Choosing a Membrane for Vapor Intrusion Mitigation System Design”.  Make sure to attend!

This year’s conference will be held in Anaheim, CA.  As a proud member of AVIP, we are excited to have Justin be a speaker at the event.

About The Conference

The Association of Vapor Intrusion Professionals to Host the 3rd Vapor Intrusion Conference October 20-23, 2024 at the JW Marriott Resort – Regulators, Attorneys and Consultants Working Together for Best Practices to provide Soil Gas Safe Communities.

About AVIP

The Association of Vapor Intrusion Professionals (AVIP) is a community of professionals dedicated to advancing the industry and science of vapor intrusion. The purpose of this association is to promote the establishment of accepted and recognized best practices for vapor intrusion professionals, provide contextual knowledge, and serve as a resource of information for the general public.

Terra-Petra Vapor Intrusion Services

Terra-Petra has been a leader in providing nationwide consulting for vapor intrusion, bringing hundreds of successful vapor intrusion projects to the table. Terra-Petra utilizes the most efficient technologies, pushing for pragmatic solutions that make sense for our clients’ economic and environmental concerns.

Terra-Petra’s vapor intrusion services include, but are not limited to the following:

  • Site Assessment
  • Passive And Active
  • Human Health Risk Assessment
  • Certified inspections
  • Consulting
  • Design | Build Capabilities
  • Design Report Preparation
  • Creating And Implementing Operation Maintenance And Monitoring Programs
  • On-Going Monitoring And Reporting

Visit Terra-Petra At Booth 3 At The 2024 Vapor Intrusion Conference

February 20, 2026
Justin Conaway, Terra-Petra Company News, Terra-Petra News, Terra-Petra Press, Vapor Intrusion, Vapor Intrusion Mitigation System, Vapor Intrustion Mitigation

Visit With Terra-Petra At Booth #3

We’re looking forward to attending the 3rd Annual Vapor Intrusion Conference in Anaheim, CA from Oct 20 – 23rd.

Come visit with Terra-Petra at Booth #3 at this year’s show.

We’re excited to speak with everyone and discuss our always growing services and capabilities, and the industry as a whole.

Additionally, Terra-Petra Vice President and General Manager Justin Conaway is set to be a speaker at the conference.  Check the show schedule and make sure to attend when Justin is speaking.

About The Conference

The Association of Vapor Intrusion Professionals to Host the 3rd Vapor Intrusion Conference October 20-23, 2024 at the JW Marriott Resort – Regulators, Attorneys and Consultants Working Together for Best Practices to provide Soil Gas Safe Communities.

About AVIP

The Association of Vapor Intrusion Professionals (AVIP) is a community of professionals dedicated to advancing the industry and science of vapor intrusion. The purpose of this association is to promote the establishment of accepted and recognized best practices for vapor intrusion professionals, provide contextual knowledge, and serve as a resource of information for the general public.

Terra-Petra’s Annual Holiday Party – A Night Of Great Fun And Celebration

February 20, 2026
Terra-Petra Company News

Terra-Petra's Annual Holiday Party - A Night Of Great Fun And Celebration

Our annual Holiday Party was held this last Saturday December 14th at Trevor’s At The Tracks in San Juan Capistrano, and it was a wonderful evening! It was a beautiful setting with great food, and fantastic music provided by The Ashe Brothers band.

Thank you to all that came out to the party.  There was much to celebrate in another successful year for Terra-Petra, and we were so happy and thankful to share it with all of those who helped make it happen.

We’re excited for what 2025 brings for our company, with some great projects already on the horizon.  Here’s to another great year!  Happy holidays and a wonderful New Year to everyone!

Holiday Party Photo Gallery

Click on a photo to enlarge

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What Does A Phase I ESA Include?

February 20, 2026
, , , Terra-Petra Company News

What Does A Phase I ESA Include?

When you hire Terra-Petra to perform a Phase I ESA (Environmental Site Assessment) the meticulous process conducted by our expert environmental consultants typically includes the following:

Historical Site Research

A thorough investigation of historical records, aerial photographs, and land-use records to identify past activities that could have led to contamination.

Site Inspection

A comprehensive on-site evaluation to identify potential sources of contamination, including above-ground and underground storage tanks, hazardous substances, and other environmental risks.

Interviews And Documentation Review

Discussions with current and past property owners, occupants, and local officials to gather valuable information about the site’s history and potential environmental concerns.

Report And Recommendations

A detailed report summarizing findings, identifying recognized environmental conditions (RECs), and providing recommendations for further action, if necessary.

Contact Terra-Petra Today To Get Started

Terra-Petra is committed to delivering thorough, timely, and accurate assessments to empower our clients with the knowledge needed for informed decision-making.

Contact us today to discuss your project and discover how our Phase I ESA services can add value to your environmental due diligence efforts.

Terra-Petra Expands To Southwest With New Office In Phoenix Arizona

February 20, 2026
Terra-Petra Company News

We are pleased to announce that Terra-Petra Environmental Engineering has opened a new office in Phoenix, Arizona – a significant milestone in our company’s growth.

The expansion will enable Terra-Petra to provide highly-specialized environmental engineering, waterproofing, and inspection services throughout the Southwest region.

Headed by Dan Valdez, Director of Field Operations, Terra-Petra will start its mobilization in the State of Arizona, Southern Nevada and New Mexico.

Terra-Petra’s consulting services include, but are not limited to, the following:

Environmental Division

Methane Mitigation

Vapor Intrusion Mitigation

Radon Mitigation

Phase I Environmental Site Assessment (ESA)

PHASE II Environmental Site Assessment (ESA)

Underground Storage Tanks

Oil Well

Waterproofing Division

Building Envelope Consulting

Forensic Waterproofing Consulting

Inspection Services

QA/QC Mitigation System Observation & Testing

QA/QC Waterproofing Building Envelope Observations

Electronic Leak Detection

Terra-Petra’s expansion represents a commitment to serving a greater need for more comprehensive environmental engineering services in the Southwest. We are optimistic about the new opportunities the Phoenix location offers and look forward to building strong relationships with clients in the area.

artworxLA Terra-Petra

Terra-Petra at artworxLA Virtual Wine Tasting

February 20, 2026
Events, Terra-Petra Company News, Terra-Petra News

Terra-Petra’s VP/General Manager, Justin Conaway, and his wife Robin represented Terra-Petra at artworxLA’s inaugural Virtual Wine Tasting Mixer on March 17, 2021. Despite physical distancing, the attendees were happy to know that we can all still connect by sharing a delicious glass of wine while learning about the wine-making process and show support for the artworxLA’s programming.

artworxLA Board Member Grant and his wife Shaya Kirkpatrick graciously hosted this event by donating wines from their boutique vineyard, William Robert Estate Wines, located in Paso Robles, CA. Justin and Robin are now getting ready for their next road trip to Paso Robles thanks to the recommendations from Shaya and Grant Kirkpatrick!

artworxLA’s next virtual event, Gala 29  will take place May 8th- 14th.

Many thanks to Meghan Beckmann of KAA Design for the invitation.

Vapor Intrusion Consulting, Testing And Monitoring – San Diego

February 20, 2026
Terra-Petra Company News, Vapor Intrusion, Vapor Intrusion Mitigation System, Vapor Intrustion Mitigation

Terra-Petra has been performing continuous inspections in San Diego at the Witt Mission Valley Apartments project since early this year. Terra-Petra observed the installation of a VI-20 geo-membrane and Liquid Boot Vapor Barrier application with smoke and thickness testing most recently.

Terra-Petra is one of the foremost experts on Vapor Intrusion consulting, inspecting, testing, monitoring and mitigation design in Southern California.  We are conversant with the many laws, codes and regulations at the city, state, county and national level. We understand the testing, design, monitoring and reporting procedures for many different regulatory agencies.

#vaporinstrution #inspection  #CETCOliquidboot #CETCOVI-20 #smoketest

Photo Gallery From Project

Vapor Intrusion Mitigation System Design And Installation – Santa Fe Springs, CA

February 20, 2026
Terra-Petra Company News, Terra-Petra News, Vapor Intrusion, Vapor Intrusion Mitigation System, Vapor Intrustion Mitigation

Terra-Petra’s Environmental Engineering Division has partnered with a Los Angeles REOC and investment management firm to design a comprehensive Vapor Intrusion Mitigation System (VIMS).

The new development, located in Santa Fe Springs, CA, will consist of a tilt-up industrial warehouse building, on grade, with an approximate building footprint of 150,500 SF. The gas vapor mitigation system shall be designed in accordance with a site specific Phase II Environmental Site Assessment report, and in accordance with the Vapor Intrusion Mitigation Advisory published by the C.A. EPA Department of Toxic Substances Control (DTSC) dated October 2011 (Cal/EPA 2011a, 2011b).

Soil Gas Investigation Los Angeles, CA

February 20, 2026
Methane Gas Detection, Methane Gas Inspections, methane soil gas investigation, Soil Gas, Terra-Petra Company News, Terra-Petra Press

In early January, Terra-Petra performed a soil gas investigation (SGI) in Los Angeles, CA, in accordance with LADBS guidelines (Information Bulletin Ref. No. 91.7104.1, P/BC 2002-101) under Terra-Petra’s LADBS Methane Testing Lab License #10224, for a major property developer.

We are pleased to continue the partnership to provide mitigation design and consulting services. The project consists of the construction of a new slab on grade warehouse building with a building footprint of approximately 169,253 SF.

There are as many as six (6) oil wells on this property, three of which may fall under the footprint of the new building. The scope of work includes methane mitigation plan design (passive system) and permitting, methane gas detection system design (active system) and permitting, and construction administration support.

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