ML20138P718

Summary of 850521 Meeting W/Util,Bechtel,Ebasco & Newman & Holtzinger Re Status of Remote Sensing Lineament & Update Info on Docket Concerning Site Geology.List of Attendees & Details of Discussion Encl

ML20138P718
Person / Time
Site:	South Texas
Issue date:	11/01/1985
From:	Kadambi N Office of Nuclear Reactor Regulation
To:	Office of Nuclear Reactor Regulation
References
NUDOCS 8511070365
Download: ML20138P718 (11)

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, . NOV 1 1985 Docket Nos.: 50-498 and 50-499

APPLICANT

Houston Lighting and Power Company FACILITY: South Texas Project, Units 1 and 2

SUMMARY

OF MEETING HELD ON MAY 21, 1985 TO DISCUSS GEOLOGICAL /

l SEISM 0 LOGIC ITEMS The meeting was held at the request of the applicant to discuss the status of i

the remote-sensing lineament analysis and to update the information on the docket regarding the geology of the site.

The list of attendees is enclosed as Enclosure 1. The applicant presented for examination by the staff imagery and drawings representing their most recent evaluations. The staff did not fully agree with the applicant on interpretation of the information presented. The details of the discussion which took place I are documented as Enclosure 2. The applicant informed the staff that their effort is continuing and more information will be provided in upcoming submittals.

/d N. P. Kadambi, Project Manager Licensing Branch No. 3 l Division of Licensing

Enclosures:

As stated i

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Mr. J. H. Goldberg Houston Lighting and Power Company South Texas Project i CC:

Brian Berwick, Esq. Resident Inspector / South Texas Assistant Attorney General Project Environmental Protection Division c/o U.S. Nuclear Regulatory Commission P. O. Box 12548 P. O. Box 910 Capitol Station Bay City, Texas 77414

- Austin, Texas 78711 Mr. Jonathan Davis Mr. J. T. Westermeir Assistant City Attorney Manager, South Texas Project City of Austin Houston Lighting and Power Company P. O. Box 1088 P. O. Box 1700 Austin, Texas 78767 Houston, Texas 77001 Ms. Pat Coy Mr. H. L. Peterson Citizens Concerned About Nuclear Mr. G. Pokorny Power City of Austin 5106 Casa Oro P. O. Box 1088 San Antonio, Texas 78233 Austin, Texas 78767 Mr. Mark R. Wisenberg Mr. J. B. Poston Manager, Nuclear Licensing Mr. A. Von Rosenberg Houston Lighting and Power Company

City Public Service Boad P. O. Box 1700

P. O. Box 1771 Houston, Texas 77001

San Antonio, Texas 78296 i

Mr. Charles Halligan Jack R. Newman, Esq. Mr. Burton L. Lex Newman & Holtzinger, P.C. Bechtel Corporation 1615 L Street, NW P. O. Box 2166 Washington, D.C. 20036 Houston, Texas 77001 Melbert Schwartz, Jr., Esq. Mr. E. R. Brooks "

Baker & Botts Mr. R. L. Range One Shell Plaza Central Power and Light Company 4

Houston, Texas 77002 P. O. Box 2122 Corpus Christi, Texas 78403 Mrs. Peggy Buchorn Executive Director Citizens for Equitable Utilities, Inc.

Route 1, Box 1684

, Brazoria, Texas 77422 E,

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4 Houston Lighting & Power Company South Texas Project CC:

Regional Administrator, Region IV U.S. Nuclear Regulatory Commission Office of Executive Director for Operations 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76011 Mr. Lanny Sinkin .

Citizens- Concerned About Nuclear Power 3022 Porter Street, NW #304 Washington, D.C. 20008 Mr. S. Head, Representative Houston Lighting and Power Company Suite 1309

' 7910 Woodmont Avenue Bethesda, Maryland 20814 x__ ;

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l Enclosure 1 South Texas Project Meeting On Geosciences Branch Questions May 21, 1985 4

Name Affiliation N. P. Kadambi NRC/NRR/DL P. R. Pirfo NRC/0 ELD Stephan Brocoum NRC/GSB Harold E. Lefevre NRC/GSB 3

D. Burton Slemmons NRC - Consultant Gus Giese-Koch NRC/GSB Rob L. Engen HLAP Civil / Structural

, . A. H. Gutternan Newman & Holtzinger Murat Tasar Bechtel Civil / Structural Ralph Talmace Bechtel Geotechnical ,

Cole McClure Bechtel .

Scott Head HL&P Mark Wisenburg '

HL8P - Licensing Don Ashton Bechtel j R. Sweeny Ebasco i

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Enclosure 2 '

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4 i SOUTH TEXAS PROJECT, UNITS 1 AND 2 DOCKET N05. 50-498 AND 50-499 HOUSTON LIGHTING AND POWER COMPANY TECHNICAL

SUMMARY

OF MAY 21, 1985 MEETING AT BETHESDA, MARYLAND  ;

The'following represent the technical issues of a geologic /seismologic nature discussed at the above meeting:

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A. Lineament Study - The applicant informed the staff that their remote-sensing study, using post CP SER U-2 imagery, had been initiated and that a 1

number of lineaments had been identified. A draft copy of the figure

depicting these lineaments was provided to the staff.

i Future Activites

1. Field-checking of the newly-identified lineaments by the applicant.

2. Applicant agreed to provide a copy of the Texas Bureau of Economic Geology linear reference cited on PSAR Figure 2.5.1-44C.

, 3. Applicant agreed to provide, in final form, the completed lineament study prior to August 1, 1985.

4. Applicant agreed to check into the availability of post-CP SER side-scan radar coverage of the site and to incorporate these data, if appropriate, into the on-going lineament study.

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. 5. The applicant agreed to inform the staff of the availability and i

appropriateness of these side-scan radar data in the very near future.

6. Applicant provided the staff with a copy of each of the 1973 low-altitude 1-color infrared photographs used during the CP investigations.

7. Applicant agreed to provide the staff with a site vicinity map illustrating the flight lines taken for the above 1973 infrared coverage.

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B. Seismic Reflection Records - As a result of the applicant's reinterpretation of pre-CP SER geophysical records (seismic reflection 4

records and well logs) and the effect that these reinterpretations have had on the location of the regional fault north of the site, the staff i

1 suggested that the applicant consider the following:

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1. Providing the staff with sufficient records (portion of the seismic i

survey) from the PSAR shallow GUS reflection survey showing clearly

{ the relationship between the fault north of the plant and the undisturbed reflector at approximately 0.255 sec.

2. Providing the staff with both an ennotated and non-annotated copy of

! the above record.

, 3. Following submittal of the above records, as well as all auxiliary i FSAR figures and text, the staff will be available for a meeting (at the applicant's request) to discuss the NRC's interpretation of both j pre- and post CP SER geophysical records.

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4. If possible, additional reflectors are to be identified and added to a revised FSAR Figure 2.5.1-7 (or equivalent figure (s), especially north of the major east-west fault, in order to complement those reflectors shown south of the fault.

5. Revising all appropriate FSAR figures (especially Figure 2.5.1-7) to show clearly the relationship of the shallow (GUS) line reflectors to the surfaceward projection of the major east-west trending near-surface fault.

C. Salt Hycothesis - The applicant was asked to include in a future FSAR amendment a discussion of the possibility of the origin of site /near site faults resulting from deep-seated salt motion and the effects of such movement on the major fault north of the site as well as on the faults antithetic to it (specifically the 6,200 ft depth fault underlying the plant area). The applicant agreed to include such a discussion in the FSAR.

D. Utilization of Well Logs - The applicant agreed to inform the staff verbally if the upper portions of certain well logs can be used as a supplement to seismic reflection records shown on several FSAR cross-section figures. If the wells cannot be used the applicant agreed to provide verbally the basis for not utilizing the well log data.

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E. Fault Plane Contour Map - The applicant agreed to consider revising FSAR Figure 2.5.1-6A (Fault Plane Contour Map) in order to depict all identified faults within five miles of the site.

F. Test Well Number 12 - The applicant informed the staff that a key hydrocarbon test well (#12) as shown on several FSAR figures is mislocated. The applicant indicated that this well will be correctly located on the appropriate figures in a future FSAR amendment.

G. Death-Age Relationships - The applicant agreed to consider:

1. Addressing the relationship of depth (thickness of site sediments) to estimated geologic age based upon relationships (discussions) as suggested by Solis (FSAR Reference 2.5.1-167) and/or other workers as applicable.

2. Attempting to assign age dates to any/all feasible horizons, especially those within the upper 2,000 ft or so of the ground surface.

3. Making appropriate changes (revisions) in the FSAR (both figures and text) resulting from Items 1 and 2 above. These changes would include figures and text relating to the site stratigraphic column.

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H. Miller and Lents Report - The applicant announced that the Miller and l

Lents Report was no longer considered as proprietary and would be submitted as docketed material in the near future. This report provides '

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! an assessment of the potential likelihood of economically producible i r hydrocarbons which may be located beneath the South Texas Project. {

l I. Assessment of Potential Ground Motion Associated With Growth Faulting The staff indicated that the FSAR contains an extensive discussion on i growth faulting in the Gulf Coastal Plain, viz. FSAR Section i

3 2.5.1.1.6.6. In discussing the causes and effects of growth faulting no i mention is made of the physical characteristics of the sediments involved, i

such as shear strength, specific density, pore pressure, differential shear et cetera to corroborate the statement made throughout the ,

i discussion and in particular in FSAR Section 2.5.1.1.6.6 that i

displacements (and consequently ground motion) caused by growth faults i are insignificant due to the inability of the in-situ material to build I h l up sufficient strain energy.

2 The applicant indicated that it will address this issue to the I r

satisfaction of the NRC in a future amendment to the FSAR.

4 1 Comments made by the applicant implied that they will utilize scientific i analysis (e.g. soil mechanics) to demonstrate that the sediments at the j STP site area which exibit numerous growth ~ faults are incapable of i i l

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The staff recommends that the analysis include a discussion of failure modes and the ground motion or moment magnitudes associated with it.

However, it should be understood that the discussions mentioned under item I and the type of rigorous analysis contemplated are necessary only if the efforts discussed to establish a horizon over the faults in question, which would render these faults incapable, fail to produce acceptable results.

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fiOV 1 1985 MEETING

SUMMARY

DISTRIBUTION Docket >No(s h* 50-498/499 -

NRC PDR Local PDR NSIC PRC System L83 Reading Attnrney, OELD GWKnighton N. P. Kadambi Pro.iect Manager Jtee NRC PARTICIPANTS N. P. Kadanbi

0. R. Pirfo S. Brocoum H. E. Lefevre D. Burton Slemmons G. Giese-Koch bec: Applicant & Service List i