Welcome to the NTAEP home page. Our group is composed of environmental professionals from the greater Dallas-Fort Worth, Texas Metroplex. Our group meets during the lunch hour on the third Wednesday of each month except for the summer months of June through August. Our meetings feature a speaker and time for networking. See below for upcoming meetings and go ahead and register if you like! We hope you can join us soon!


If you would like to see our exciting upcoming events or view a presentation from a previous meeting, please see our Recent News!  NTAEP also offers a scholarship to students with an environmental science major - find out more here.

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North Texas Association of Environmental Professionals (NTAEP)

Interested in becoming a member of NTAEP?  We would love to have you! Please click below to view our memberships to see which one is right for you.  


Check out the Corporate Spotlight to see what our corporate sponsors are up to in the environmental industry!

You can't have a great organization without great people!  Get to know our Board of Directors!

Looking for a career?  Looking to fill an open position?  NTAEP can help!  We post job openings in the environmental industry from our affiliates/members, so check them out!

NTAEP Monthly Meeting - 3514 W. Airport Freeway, Irving, Texas 75062
11:30 a.m. to 1:00 p.m.


August 17, 2022

Janet Castle of Eagle Synergistic will be presenting

"Optimized Site Investigations Utilizing Advanced High Resolution Subsurface Imaging Data, Portable GC for Speciation and Quantification, & Correlating Soil & GW Samples Onsite in Real Time."

In recent years, growing acceptance and application of High-Resolution Site Characterization (HRSC) technologies has led to successful characterization of increasingly complex sites.  IF there is one anticipated contaminated plume or several contaminates of concern, an upgraded process is now currently being utilized.  On the majority of commercial and federal sites, there are not only comingled plumes containing non-aqueous phase liquid (NAPL) hydrocarbons and chlorinated solvents, but also PFAS concerns.  Thus, it may be necessary to distinguish between multiple releases within the same area of interest (AOI). The Optical Image Hydraulic Profiling Tool (OIHPT) System is a proven tool used for detection and delineation of polyaromatic hydrocarbons (PAHs) in the subsurface. The Membrane Interface Hydraulic Profiling Tool, (MIHPT) System is a proven tool used for detection and delineation of VOCs in the subsurface. With the escalating concerns of PFAS, there is now a tool that samples PFAS in a very discrete manner, while profiling the lithology in real time mode. This talk will highlight the application of several of these key High Resolutions Site Characterization, (HRSC) tools but with an added technology on site for further correlation; a second miniature portable gas chromatograph, (GC), with columns will be utilized to correlate the HRSC signatures, which can provide targeted, quantitative analysis of impacted intervals identified by HRSC subsurface imaging data.  Additionally, since contaminants can now be speciated in real time in the field, comingled plumes will be delineated efficiently, both vertically and laterally. Hence, with a more accurate and defined conceptual site model, (CSM), more informed decisions are made to optimize the remediation phase.

Janet Castle has over 20 years of experience with utilizing geophysics, petrophysics, geology, hydrology, and geochem to optimize projects. She is a Professional Geologist and president of Eagle Synergistic Optimizing Technologies.  Her primary area of focus includes managing a team of subsurface imaging specialists that complete HRSC investigation projects and 3D visualizations. Other areas of expertise include working with geochem to correlate soil and groundwater samples to HRSC subsurface imaging data, including a portable onsite lab grade GC.  She is also highly experienced in 3D modeling. As a geologist and petrophysicist, she has developed optimized strategies and plans for various types of sites, including commercial, Superfund, EPA, O&G, and DOD sites.  She has also worked on PFAS sites and is actively engaged in the rapidly evolving world of PFAS science and regulations. Education is in geophysics and petroleum geology at University of Houston and Colorado School of Mines.


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