October 26, 2014 AEG Field Trip to Naval Air Warfare Center
Tuesday, October 14, 2014 07:51 AM



New York – Philadelphia Section

Click here for registration form
Click here for AEG liability form

Remediation of Recalcitrant DNAPL Contamination in Fractured Bedrock at USGS NAWC Research Site in West Trenton, NJ

Sunday, October 26, 2014 at the Naval Air Warfare Center, near Trenton New Jersey 

Presented by

Pierre Lacombe, U.S. Geological Survey

Naval Air Warfare Center, view to the West towards Mercer County Airport

Time:      10:00 am – 3:30 pm (Assemble at 10 am to view outcrops at Stop 1, near Office Park at

810 Bear Tavern Road, West Trenton, New Jersey 08628.) 

Place:     Naval Air Warfare Center, near Trenton New Jersey 

RSVP:    Please email AEG NYP Secretary Amanda Forsburg at [email protected] to reserve a spot.

Please mail a completed registration form and liability waiver along with check made out to AEG NYP to:

Rose DeLorenzo, AEG-NYP Treasurer / Matrix New World Engineering, Inc. / 26 Columbia Turnpike / Florham Park, NJ 07932.  Registration form, liability waiver, and payment must be received by Thursday, October 23, 2014.  Registration is only complete upon receipt of forms and payment – a confirmation email will be sent when registration is complete.


Cost:     $125 for AEG members. $150 for non-AEG members. $25 for Students.  By reservation only.  Limit 50 people. 

CECs:    Four professional development hours (pdh) for continuing education credit (CEC) will be awarded.

4.5 LSRP Technical CECs will be awarded.

Attendees are invited to join us for a tour of the nearby River Horse Brewery after the field trip. 

The tour is 4:15 PM – 5:00 PM.  There is a fee of $5.  2 Graphics Drive, Ewing Township, NJ 08628.  (609) 883-0890.


Most in the environmental field consider groundwater contamination in fractured bedrock to be one of the greatest challenges for remediation.  The US Geological Survey has addressed this challenge with the development of the USGS Toxics Substances Hydrology Program to investigate remediation issues in fractured bedrock. The Naval Air Warfare Center (NAWC) near Trenton NJ is a former military base where thousands of gallons of trichloroethylene (TCE) leaked or were disposed of during the period from 1953 to 1990. The NAWC site overlies fractured mudstones of the Newark Basin.

Research on contamination in fractured bedrock by governmental, academic, and industrial scientists has been conducted at NAWC since 1992. Investigations include the geology, hydrogeology, hydrology, water chemistry, rock chemistry, biotic and abiotic degradation, biostimulation, surface and borehole geophysics,  fate and transport issues, adsorption, volatilization of groundwater discharge, pump and treat systems, monitored natural attenuation, dig and haul options, aquifer modeling, thermal conductive heating (TCH), diffusion samplers,  passive flux meters,  electrical tomography and many other methods, techniques, and tools.

The common theme for all research is the fact that the hydrogeologic framework at NAWC has been well-studied, and the site itself is a natural laboratory with an extensive historic data base focusing on long term water-level and water-quality data.

The goal of this fieldtrip is to present the development of the hydrogeologic framework for this site, and show how the framework has been applied in the multifaceted research conducted here, and to consider the applicability of such a framework in other similar gently dipping fractured sedimentary bedrock hydrogeologic settings.


Pierre Lacombe is a Research Hydrologist with the US Geological Survey (USGS) and has worked with the Survey for 30 plus years.  Pierre has an MS from Boston College and a BS from SUNY New Paltz, NY.  He has investigated and published extensively on: Water levels in the major confined aquifers of the NJ Coastal Plain; Saltwater intrusion issues in Cape May County NJ; and the Impacts of hydrogeologic framework on recalcitrant compounds in fractured bedrock.


Print and bring along your own Field Trip Guide:       https://www.dropbox.com/s/kehgf0598v4zvc5/October%202014%20AEG%27s%20NWAC%20Field%20Trip%20Guide.pdf?dl=0


Lacombe, P. J., 2011, Mass of chlorinated volatile organic compounds removed by pump-and-treat, Naval Air Warfare Center, West Trenton, New Jersey, 1996-2010:  US Geological Survey Scientific Investigations report 2011-5003, 32 p.

Lacombe, P. J., and Burton, W. C. 2010, Hydrogeologic framework of fractured sedimentary rock, Newark Basin, New Jersey, Ground Water Monitoring and Remediation, v. 30, no. 2, p. 35 -45.


10:00 am         Assemble at Office Park, 810 Bear Tavern Road (Route 579), West Trenton NJ 08628 (SW corner of parking lot.)   Sign in, forms, orientation, don safety vests. 

10:00-11:00    STOP 1:  Walk to outcrop along road cut for I-95 exit ramp.  Observe upper part of Prahls Island Member of Lockatong Formation, showing chemically altered micro- fractures, differentially-weathered strata of Van Houten cycles, strata-bound joints, fissile versus indurated strata, mudcracks, desiccation breccias, and punctuated flow paths in fissile, water-bearing strata. 

11:00 – 12:00  LUNCH:   Picnic lunch at Bear Tavern Rd (provided.)  Discuss primary and secondary porosity, groundwater flow and other hydrologic and geochemical features observed. 

12:00                TRAVEL:  Drive 1.3 miles to Naval Air Warfare Center, off Parkway Avenue.

12:00–3:00      STOP 2:  Start tour of NAWC, visit up to 20 demonstration stations.

12:00-1:00       REVIEW site use history, core laboratory, hydrogeologic framework development. 

1:00-2:00         VIEW Monitor Well network, pump and treat system, water level and WQ data.

2:00-3:00         OBSERVE applied remediation tools and technologies at work (see Field Trip Guide.) 

3:00 – 3:30      WRAP UP: Closing remarks, Question and Answer Session. 

LSRP Sign out, Speaker Evaluation Forms (CE Certificates will be provided via email)




Mountain View Office Park, 810 Bear Tavern Road (Route 579), West Trenton NJ 08628


From I-95 South, exit 2 Bear Tavern Road, turn north (L) on Bear Tavern Road, drive 500 feet and turn R at first red light, into Mountain View Business Park, Turn R towards Bldg 810.

From I-95 North, exit 2 Bear Tavern Road, turn north (L) on Bear Tavern Road, cross over highway  and turn R at red light, into Mountain View Business Park, Turn R towards Bldg 810.


NAWC, Parkway Ave and Jack Stephan Way, Ewing Township, NJ 08628 

From Stop 1, turn Left onto Bear Tavern Road (579) drive one mile south to light and turn Left onto Parkway Ave (West Upper Ferry Road).  (See 7-11 on the right, Lukoil and Dunkin Donuts across.)  Drive one-third mile to the intersection of Parkway and Decou on Right (Haley’s lunch place on far R).

Turn Left turn onto Jack Stephan Way.  Drive 100 feet and pull into gravel parking lot on the right.


Wear closed toe and closed heel shoes and long pants. One restroom at NAWC, one at Haley’s.