CPT and MiHpt Programs Bayou Corne 8 AUG 2013

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Hubert Campbell
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1 CPT and MiHpt Programs Bayou Corne 8 AUG 2013

2 Agenda Introduction and purpose of meeting Why CPT and MiHpt Charlie Faust, Tt CPT and MiHpt overview Charlie Faust, Tt Program progress Charlie Faust, Tt LDNR assessment of CPT and MiHpt Gary Hecox, CB&I Plan forward Faust, Hecox and John Boudreaux, AOEP

3 Introduction and purpose of meeting Provide technical details and program objectives Discuss progress and planned work Answer questions

4 Why CPT and MiHPT Alternative to installing wells Less intrusive Faster Better definition of subsurface Can be used to evaluate gas depletion in MRAA and soils above MRAA

5 CPT and MiHpt Probes pushed or hammered into ground to characterize the subsurface soil Cone Penetrometer Testing (CPT) Geotechnical applications Measures tip pressure, sleeve friction, pore pressure Determines soil strength, soil type, groundwater conditions MiHpt Environmental applications Membrane interface probe (Mip) Measures ionization response in carrier gas exposed to soil Correlated to contamination Hydraulic profile tool (Hpt) Measures pore pressure, injection flow rates, EC, temperature Correlated to permeability and soil type

CPT REPORT - STANDARD ARDAMAN 12-84-2910E.GPJ CPT V3.0.GDT 5/9/13 t CPT Report Napoleonville Salt Dome Cone Penetration Test CPT-3 Northing: #: Easting: Project 12-84-2910E Date: May.

6 CPT REPORT - STANDARD ARDAMAN E.GPJ CPT V3.0.GDT 5/9/13 t CPT Report Napoleonville Salt Dome Cone Penetration Test CPT-3 Northing: #: Easting: Project E Date: May. 9, 2013 Elevation: Total Depth: ft D e p t h ( f t ) Sleeve Friction Tip Resistance f s qt (tsf) (tsf) Pore Friction DPressure eratio p tsb h T Rf MAI ( Rf f t = ) 1 u2 (%) (1 986) (tsf) > > 1 5 > > > > > > 4 5 > > sensitive silty clay fine to grained clay q clayey organic silt material to silty clay ( 36 Page1of1 - sandy clay silt to clayey silt 10 - gravelly 7 - silty sand to to sandy sand silt CPT very 8 - stiff sand fine to grained silty sand (*) 12 - sand 9 - sand to clayey sand (*) t 5s f 5)

7 MiHpt Report

8 Program Progress CPT 74 sounding locations completed Grouting and interpretation issues addressed MRAA top defined Gas zones detected Penetration into MRAA improved

9 Map of Installed CPT locations

10 Elevation of Top of MRAA

11 Geologic Cross Section Based on CPT Data NW SE

12 Map of Gas Shows

13 Program Progress MiHpt 12 soundings completed Grouting issues addressed Methane can be detected Comparison to CPT ongoing

14 MiHpt Locations Completed and Planned

15 Review of CPT Program Gary R. Hecox, Ph.D. CB&I

16 Quality Control Checks on Depths and Check for pressure stability of dissipation tests using standard QC methods Check for depth of CPT- -did it get into the MRAA? Check interpretation of gas intervals Test Results Stable Test Depth Class=04 Deep, PointID=CPT-35W, Depth_ft= Not Stable Test Overlay Plot Depth Class=04 Deep, PointID=CPT-35W, Depth_ft=

17 CPT Depth Checking Limited MRAA Penetration Good MRAA Penetration

18 CB&I CPT Review Conclusions CB&I recommends lifting of cease and desist order Allow CPT/MiHPT investigation to proceed in Bayou Corne community Implement DNR grout oversight program (written records, grout samples, standard written procedure for re-grouting) Dissipation test stability/interpretation issues resolved Ongoing evaluations CPT can definitely identify at least some gas intervals map with other gas data Defining no gas areas using CPT more problematic, appear to be some false negatives where CPT shows no gas but other data indicate there is gas (e.g. well pressure, bubbling). Some CPTs can only get a few feet into MRAA others get deeper MiHPT has similar depth limitations; direct detection of methane very positive attribute Some early CPTs need to be redone or twin with MiHPT

19 Plan forward CPT Propose testing in community and test as soon as approved Address platform stability for sites in marsh and bayous Identify locations and resound where necessary Complete planned soundings MiHtp Calibrate FID response with known gas shows Twin with CPT locations in community Determine additional locations and conduct soundings

20 Map of Planned CPT Locations

21 Schedule of Activities

22 Questions?

23 Existing ORW Wells

CONE PENETRATION TESTS

CONE PENETRATION TESTS February 25, 2015 John Doe, P.E. Acme Engineering and Testing 1234 Test Avenue, Suite 204 Lake Wales, FL 33853 Re: Sample CPT Soundings Dear Mr. Doe, Direct Push Services, LLC (DPS) was retained by Acme