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| | Appendix F Dr. Robert E. Recan Reports 5-.h.5 &l]j h ,F y f,n Uvf .}[hu }% |
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| Appendix F Dr. Robert E. Recan Reports | |
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| 5-.h.5 &l]j h ,F y f,n Uvf .}[hu }% | |
| % ; & s z..a .a s a\"(*sal ( ;k W | | % ; & s z..a .a s a\"(*sal ( ;k W |
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| (7 3 790 1450 | | (7 3 790 1450 |
| * TWX 710 E334323 | | * TWX 710 E334323 Septe=ber 18, 1979 P.s. Sandra Wastler Nuclear Regulatory Co==ission Washington, D.C. 20555 |
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| Septe=ber 18, 1979 | |
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| P.s. Sandra Wastler Nuclear Regulatory Co==ission Washington, D.C. 20555 | |
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| ==Dear Sandra:== | | ==Dear Sandra:== |
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| 1259 049 F-21 7911020 //] - | | 1259 049 F-21 7911020 //] - |
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| * Appenoix r (Lontinuect | | * Appenoix r (Lontinuect |
| !b. S:ndra L'astler Fepte:hcr 10, : 7 | | !b. S:ndra L'astler Fepte:hcr 10, : 7 The B and B f at'lt is a definite linear =apetic feature on the aero-magnetic map, but I concur with EDCON's finding that it is undoubtedly the trace of the plate contact (again if the Decatur were faulted in this region, the downthrown side would have to be qt.ite deep). I guess I keep referring - |
| .
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| The B and B f at'lt is a definite linear =apetic feature on the aero-magnetic map, but I concur with EDCON's finding that it is undoubtedly the trace of the plate contact (again if the Decatur were faulted in this region, the downthrown side would have to be qt.ite deep). I guess I keep referring - | |
| to the more magnetic province as the Decatur terrain. This is a result of having talked to k'hetten and having examined the U.S.G.S. regional cap. I think that it shows that this is a coherent unit and that the hypothetical B and B fault in the vicinity of the plant is si= ply the boundary between thi? highly ::p: tic un'.t =d inc itss spatic Shuksan. As I centioned in our report it was dissappointing that EDCON did not consider the U.S.C.S data more. | | to the more magnetic province as the Decatur terrain. This is a result of having talked to k'hetten and having examined the U.S.G.S. regional cap. I think that it shows that this is a coherent unit and that the hypothetical B and B fault in the vicinity of the plant is si= ply the boundary between thi? highly ::p: tic un'.t =d inc itss spatic Shuksan. As I centioned in our report it was dissappointing that EDCON did not consider the U.S.C.S data more. |
| I have some difficulty in answering your question about che Loveseth fault as we no longer have any of the data to examine. I remember our discussions about it and the mention of some modeling but I also think that sonething led us away fro = the necessity for doing such. I would have to see the data again to connent with any confidence on this. However, you might check to see if this is not associated with the Devil's Mountain fault zone, i.e. , some contact or drag feature. | | I have some difficulty in answering your question about che Loveseth fault as we no longer have any of the data to examine. I remember our discussions about it and the mention of some modeling but I also think that sonething led us away fro = the necessity for doing such. I would have to see the data again to connent with any confidence on this. However, you might check to see if this is not associated with the Devil's Mountain fault zone, i.e. , some contact or drag feature. |
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| Since rely, PHOENIX CORPORATION r | | Since rely, PHOENIX CORPORATION r |
| b , Y RobertD.Regan,[h.D. | | b , Y RobertD.Regan,[h.D. |
| Director, Earth Sciences Div sion RDR:ke Enclosure | | Director, Earth Sciences Div sion RDR:ke Enclosure F- 22 |
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Line 86: |
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| -50' d s* | | -50' d s* |
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| OBSERVATION PLANE | | OBSERVATION PLANE ass /// / s u s u s / / s u o u u s i , a,,,,,,,,,,,,,,,,,,,,,,,,,,,,, |
| '
| | d BODY E '91KE N-S V _ _ , _ I = 7l* |
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| 2000' | |
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| A NO M ALY DUE TO A FAULT p_ | |
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Category:CORRESPONDENCE-LETTERS
MONTHYEARML20133E7091985-09-27027 September 1985 Concurs in Rescinding Subagreements 1 & 2 Re Review of Skagit/Hanford Nuclear Project,Units 1 & 2,in Response to 850820 Memo ML20137F7551985-08-20020 August 1985 Requests Concurrence to Rescind Encl Subagreements 1 & 2,as Amended,Effective 850930,based on 840123 Termination of License Application IR 05000523/20060051985-08-0606 August 1985 Forwards Enhanced Team Operational Insp Rept 50-528/85-12 on 850523-0605 & 0716.No Violations Noted ML20107F8571985-02-20020 February 1985 Requests Itemized Listing of Actual NRC Expenditures for Prof Staff Hrs & Contractual Supprot Svc Associated W/Review of Withdrawn CP Application,In Response to .Extension of 850205 Due Date for Payment Also Requested ML20076L4381983-07-12012 July 1983 Concurs w/830624 Proposal Re Issuance of Fes.Schedule Should Be Determined Following Selection of Licensing Alternative or After Prehearing Schedule Reestablished.Svc List Encl ML20076N2951983-07-12012 July 1983 Concurs W/Proposal in Re Issuance of Fes.Schedule Should Be Determined Following Selection of Licensing Alternative or After Prehearing Schedule Reestablished.Svc List Encl.Related Correspondence ML20076K2631983-06-30030 June 1983 Comments on Proposed Rule 10CFR50 Re NRC Policy Statements on Severe Accidents & Related Views on Nuclear Reactor Regulation ML20076K3681983-06-30030 June 1983 Comments on Proposed Rules 10CFR50 & 51 Re Requirements for Licensee Actions on Disposition of Spent Fuel Upon Expiration of OLs ML20076K3761983-06-30030 June 1983 Comments on Des for Skagit/Hanford Nuclear Plant.Eis Flawed in Scope & Content & Fails to Recognize Existence of Yakima Indian Nation.No Significant Adverse Impact Addressed.Comment May Not Be Used in Proceedings ML20076K3861983-06-30030 June 1983 Comments on NRC Policy Statement on Evaluation Plan for Safety Goal Development Program ML20076K4101983-06-30030 June 1983 Comments on Des for Skagit/Hanford Nuclear Plant.Eis Flawed in Scope & Content & Fails to Recognize Existence of Yakima Indian Nation.No Significant Adverse Impact Addressed.Comment May Not Be Used in Proceedings ML20071L9521983-05-25025 May 1983 Requests Current Suspension of Federal & State Licensing Proceedings Continue Until mid-Sept 1983 to Consider Licensing Alternatives ML20071B9341983-02-18018 February 1983 Commits to Conduct Proposed Addl Investigations of May Junction Monocline Similar to Investigations Identified as Phases III & IV in Util ML20028C9371983-01-11011 January 1983 Forwards Affidavits of Svc for Amend 8 to Application for Site Certification/Environ Rept & Amend 29 to PSAR ML20065B2401983-01-10010 January 1983 Questions Why Vital Resources of ACRS Will Be Wasted on Technical Meeting for Proposed Project in Light of Financial & Planning Disaster Associated W/Const ML20064D2811982-12-27027 December 1982 Forwards Amend 29 to Psar.Info Relevant to Diesel Generator Design Provisions for Accommodating Dust & Ashfull ML20064D7261982-12-14014 December 1982 Forwards Amend 8 to Application for Site Certification/ Environ Rept,Responding to Wa State Energy Facility Site Evaluation Council Comments on Amend 6 ML20070D0031982-12-0808 December 1982 Forwards Suppl to 820222 Response to Request for Info Re Unresolved Safety Issue A-39 Concerning Safety Relief Valve Pool Dynamic Loads,Per NUREG-0802,NUREG-0783 & NUREG-0763 ML20028B3001982-11-24024 November 1982 Forwards Proposed Hearing Schedule for Consideration at 821202 Prehearing Conference.Related Correspondence ML20027E8061982-11-10010 November 1982 Comments on Amend 6 to Environ Rept,Listing Previously Identified Concerns Not Adequately Addressed in Rept.Issues Include Cooling Water Intake Structures,Accumulation of Heavy Metals in Fishes & Use of Sodium Hypochlorite ML20066E0731982-11-0909 November 1982 Forwards Affidavit of Svc for Amend 28 to PSAR ML20027E6531982-11-0808 November 1982 Proposes Schedule for ASLB Hearing on Health & Safety Issues & Energy Facility Site Evaluation Council Issues & for ASLB Council Joint Hearings.Related Correspondence ML20027E6471982-11-0808 November 1982 Advises That Util Has Reconsidered & Will Modify Intake Design to Limit Intake Screen Openings to 1/8-inch While Preserving Option of Using 3/8-inch Openings.Related Correspondence ML20027E6601982-11-0303 November 1982 Advises That Joint Nrc/Energy Facility Site Evaluation Council Fes Will Be Issued on 830301.Schedule Change Due to Decision to Include Northwest Power Planning Council Electrical Energy Forecast Info ML20065Q0521982-10-22022 October 1982 Forwards Affidavit of Svc Certifying Distribution of PSAR Amend 27 to Listed Persons on 821020 ML20065P1701982-10-19019 October 1982 Requests All Parties Be Informed of Natl Wildlife Federation & or Environ Council Correct Address ML20023A7601982-10-15015 October 1982 Forwards Final Draft of Amend 28 to Psar,Consisting of Responses to NRC Questions 231.5,231.14 & 231.15,revisions to PSAR Section 2.5 & Apps 2K & 2R.W/25 Oversize Figures. Aperture Cards Are Available in PDR ML20065T8721982-10-15015 October 1982 Forwards Amend 28 to Psar,Responding to NRC Questions 231.5,231.14 & 231.15 Re May Junction Monocline.Amend Also Revises PSAR Section 2.5 & Apps to Include Results of Work on Southeast Anticline ML20028A2701982-10-12012 October 1982 Forwards Util 820916 Ltr to DOE & DOE 820929 Response Re Proposed Exclusion Area Boundary for Project ML20065M6241982-10-0808 October 1982 Forwards Amend 27 to PSAR ML20063P2101982-10-0707 October 1982 Forwards Affidavit of Svc for Amend 7 to Application for Site Certification/Environ Rept ML20065F5711982-09-27027 September 1982 Forwards Affidavit of Svc for Amend 6 to Application for Site Certification/Environ Rept ML20063N7781982-09-16016 September 1982 Forwards Amend 7 to Application for Site Certification/ Environ Rept.Amend Revises Info Re need-for-power, Alternative Energy Sources,Socioeconomics & Exclusion Area Boundary.Verification & Distribution List Encl ML20027B3361982-09-10010 September 1982 Forwards Comments on Des for Facility.Socioeconomic Impacts of Facility Operation Must Be Evaluated on Regional Basis ML20065B0121982-09-0909 September 1982 Reply to to Wa State Energy Facility Site Evaluation Council.Date of 821216 Is for Probable Release of Fes Not Des.Util Plans to File Amend 7 to Asc Environ Rept ML20064P0591982-09-0202 September 1982 Forwards Response to Comments on Des,Per NRC 820722 Request. Uncertainties Re March & Corral Codes in Calculating Accident Probabilities Do Not Invalidate Use of Codes ML20063K7971982-09-0101 September 1982 Forwards Affidavit of Svc for Amend 26 to PSAR ML20063L1551982-08-30030 August 1982 Requests That All Correspondence Re Facility Be Addressed to Mv Stimac at Listed Address ML20076K2831982-08-30030 August 1982 Comments on Des for Skagit/Hanford Nuclear Plant.Eis Flawed in Scope & Content & Fails to Recognize Existence of Yakima Indian Nation.No Significant Adverse Impact Addressed.Comment May Not Be Used in Proceeding ML20064M7651982-08-20020 August 1982 Forwards Amend 6 to Application for Site Certification/ Environ Rept.Amend Addresses Wa State Energy Facility Site Evaluation Council Application Completeness Review,Comments on Des (NUREG-0894) & Changes Resulting from NPDES Hearing ML20063B1101982-08-16016 August 1982 Forwards Amend 26 to PSAR ML20055C0881982-08-0404 August 1982 Discusses Resolution of Final Geology Concern Re May Junction Monocline.Investigations Yielded No Evidence of Faults Associated W/Fold.Investigative Program Discussed at 820721 Meeting W/Nrc Will Take Approx 8 Wks to Complete ML20062H1741982-08-0404 August 1982 Forwards Request for Addl Info to Confirm Presence or Absence of Potentially Hazardous Geologic Structure within 5 Miles of Site ML20071L1621982-07-27027 July 1982 Advises That Distribution Lists Should Be Updated by Replacing R Lowenstein W/Dg Powell ML20063G7021982-07-26026 July 1982 Forwards Util Responding to NRC 820624 Questions Re Need for Power Issue ML20062B5071982-07-22022 July 1982 Forwards Comments Received Re Facilities Des.Responses to Comments Expected by 820811 ML20071L1511982-07-22022 July 1982 Notifies That as Result of Review of Seismic & Geologic Data for Facility,Addl Work Is Necessary to Evaluate May Junction Lineation Near Site ML20058E2671982-07-21021 July 1982 Confirms Conversation W/Nrc That Future Correspondence Re Facilities Should Be Addressed to Rv Myers ML20058E3671982-07-20020 July 1982 Comments on Des.Insufficient Info Available Re Cooling Water Intake & Discharge Structure Const to Permit Adequate Evaluation ML20058C3801982-07-19019 July 1982 Forwards Affidavit of Svc of Amend 24 Errata to PSAR 1985-09-27
[Table view] Category:INCOMING CORRESPONDENCE
MONTHYEARML20137F7551985-08-20020 August 1985 Requests Concurrence to Rescind Encl Subagreements 1 & 2,as Amended,Effective 850930,based on 840123 Termination of License Application ML20107F8571985-02-20020 February 1985 Requests Itemized Listing of Actual NRC Expenditures for Prof Staff Hrs & Contractual Supprot Svc Associated W/Review of Withdrawn CP Application,In Response to .Extension of 850205 Due Date for Payment Also Requested ML20076L4381983-07-12012 July 1983 Concurs w/830624 Proposal Re Issuance of Fes.Schedule Should Be Determined Following Selection of Licensing Alternative or After Prehearing Schedule Reestablished.Svc List Encl ML20076N2951983-07-12012 July 1983 Concurs W/Proposal in Re Issuance of Fes.Schedule Should Be Determined Following Selection of Licensing Alternative or After Prehearing Schedule Reestablished.Svc List Encl.Related Correspondence ML20076K2631983-06-30030 June 1983 Comments on Proposed Rule 10CFR50 Re NRC Policy Statements on Severe Accidents & Related Views on Nuclear Reactor Regulation ML20076K3681983-06-30030 June 1983 Comments on Proposed Rules 10CFR50 & 51 Re Requirements for Licensee Actions on Disposition of Spent Fuel Upon Expiration of OLs ML20076K3761983-06-30030 June 1983 Comments on Des for Skagit/Hanford Nuclear Plant.Eis Flawed in Scope & Content & Fails to Recognize Existence of Yakima Indian Nation.No Significant Adverse Impact Addressed.Comment May Not Be Used in Proceedings ML20076K3861983-06-30030 June 1983 Comments on NRC Policy Statement on Evaluation Plan for Safety Goal Development Program ML20076K4101983-06-30030 June 1983 Comments on Des for Skagit/Hanford Nuclear Plant.Eis Flawed in Scope & Content & Fails to Recognize Existence of Yakima Indian Nation.No Significant Adverse Impact Addressed.Comment May Not Be Used in Proceedings ML20071L9521983-05-25025 May 1983 Requests Current Suspension of Federal & State Licensing Proceedings Continue Until mid-Sept 1983 to Consider Licensing Alternatives ML20071B9341983-02-18018 February 1983 Commits to Conduct Proposed Addl Investigations of May Junction Monocline Similar to Investigations Identified as Phases III & IV in Util ML20028C9371983-01-11011 January 1983 Forwards Affidavits of Svc for Amend 8 to Application for Site Certification/Environ Rept & Amend 29 to PSAR ML20065B2401983-01-10010 January 1983 Questions Why Vital Resources of ACRS Will Be Wasted on Technical Meeting for Proposed Project in Light of Financial & Planning Disaster Associated W/Const ML20064D2811982-12-27027 December 1982 Forwards Amend 29 to Psar.Info Relevant to Diesel Generator Design Provisions for Accommodating Dust & Ashfull ML20064D7261982-12-14014 December 1982 Forwards Amend 8 to Application for Site Certification/ Environ Rept,Responding to Wa State Energy Facility Site Evaluation Council Comments on Amend 6 ML20070D0031982-12-0808 December 1982 Forwards Suppl to 820222 Response to Request for Info Re Unresolved Safety Issue A-39 Concerning Safety Relief Valve Pool Dynamic Loads,Per NUREG-0802,NUREG-0783 & NUREG-0763 ML20028B3001982-11-24024 November 1982 Forwards Proposed Hearing Schedule for Consideration at 821202 Prehearing Conference.Related Correspondence ML20027E8061982-11-10010 November 1982 Comments on Amend 6 to Environ Rept,Listing Previously Identified Concerns Not Adequately Addressed in Rept.Issues Include Cooling Water Intake Structures,Accumulation of Heavy Metals in Fishes & Use of Sodium Hypochlorite ML20066E0731982-11-0909 November 1982 Forwards Affidavit of Svc for Amend 28 to PSAR ML20027E6531982-11-0808 November 1982 Proposes Schedule for ASLB Hearing on Health & Safety Issues & Energy Facility Site Evaluation Council Issues & for ASLB Council Joint Hearings.Related Correspondence ML20027E6601982-11-0303 November 1982 Advises That Joint Nrc/Energy Facility Site Evaluation Council Fes Will Be Issued on 830301.Schedule Change Due to Decision to Include Northwest Power Planning Council Electrical Energy Forecast Info ML20065Q0521982-10-22022 October 1982 Forwards Affidavit of Svc Certifying Distribution of PSAR Amend 27 to Listed Persons on 821020 ML20065P1701982-10-19019 October 1982 Requests All Parties Be Informed of Natl Wildlife Federation & or Environ Council Correct Address ML20065T8721982-10-15015 October 1982 Forwards Amend 28 to Psar,Responding to NRC Questions 231.5,231.14 & 231.15 Re May Junction Monocline.Amend Also Revises PSAR Section 2.5 & Apps to Include Results of Work on Southeast Anticline ML20023A7601982-10-15015 October 1982 Forwards Final Draft of Amend 28 to Psar,Consisting of Responses to NRC Questions 231.5,231.14 & 231.15,revisions to PSAR Section 2.5 & Apps 2K & 2R.W/25 Oversize Figures. Aperture Cards Are Available in PDR ML20028A2701982-10-12012 October 1982 Forwards Util 820916 Ltr to DOE & DOE 820929 Response Re Proposed Exclusion Area Boundary for Project ML20065M6241982-10-0808 October 1982 Forwards Amend 27 to PSAR ML20063P2101982-10-0707 October 1982 Forwards Affidavit of Svc for Amend 7 to Application for Site Certification/Environ Rept ML20065F5711982-09-27027 September 1982 Forwards Affidavit of Svc for Amend 6 to Application for Site Certification/Environ Rept ML20063N7781982-09-16016 September 1982 Forwards Amend 7 to Application for Site Certification/ Environ Rept.Amend Revises Info Re need-for-power, Alternative Energy Sources,Socioeconomics & Exclusion Area Boundary.Verification & Distribution List Encl ML20027B3361982-09-10010 September 1982 Forwards Comments on Des for Facility.Socioeconomic Impacts of Facility Operation Must Be Evaluated on Regional Basis ML20065B0121982-09-0909 September 1982 Reply to to Wa State Energy Facility Site Evaluation Council.Date of 821216 Is for Probable Release of Fes Not Des.Util Plans to File Amend 7 to Asc Environ Rept ML20064P0591982-09-0202 September 1982 Forwards Response to Comments on Des,Per NRC 820722 Request. Uncertainties Re March & Corral Codes in Calculating Accident Probabilities Do Not Invalidate Use of Codes ML20063K7971982-09-0101 September 1982 Forwards Affidavit of Svc for Amend 26 to PSAR ML20063L1551982-08-30030 August 1982 Requests That All Correspondence Re Facility Be Addressed to Mv Stimac at Listed Address ML20076K2831982-08-30030 August 1982 Comments on Des for Skagit/Hanford Nuclear Plant.Eis Flawed in Scope & Content & Fails to Recognize Existence of Yakima Indian Nation.No Significant Adverse Impact Addressed.Comment May Not Be Used in Proceeding ML20064M7651982-08-20020 August 1982 Forwards Amend 6 to Application for Site Certification/ Environ Rept.Amend Addresses Wa State Energy Facility Site Evaluation Council Application Completeness Review,Comments on Des (NUREG-0894) & Changes Resulting from NPDES Hearing ML20063B1101982-08-16016 August 1982 Forwards Amend 26 to PSAR ML20055C0881982-08-0404 August 1982 Discusses Resolution of Final Geology Concern Re May Junction Monocline.Investigations Yielded No Evidence of Faults Associated W/Fold.Investigative Program Discussed at 820721 Meeting W/Nrc Will Take Approx 8 Wks to Complete ML20071L1621982-07-27027 July 1982 Advises That Distribution Lists Should Be Updated by Replacing R Lowenstein W/Dg Powell ML20063G7021982-07-26026 July 1982 Forwards Util Responding to NRC 820624 Questions Re Need for Power Issue ML20071L1511982-07-22022 July 1982 Notifies That as Result of Review of Seismic & Geologic Data for Facility,Addl Work Is Necessary to Evaluate May Junction Lineation Near Site ML20058E2671982-07-21021 July 1982 Confirms Conversation W/Nrc That Future Correspondence Re Facilities Should Be Addressed to Rv Myers ML20058E3671982-07-20020 July 1982 Comments on Des.Insufficient Info Available Re Cooling Water Intake & Discharge Structure Const to Permit Adequate Evaluation ML20058C3801982-07-19019 July 1982 Forwards Affidavit of Svc of Amend 24 Errata to PSAR ML20055B4681982-07-16016 July 1982 Forwards Responses to Questions Re Need for Power Issue. Revised Section to Application for Site Certification & Environ Rept Currently Being Developed Addressing Available Forecasts Consistent W/Draft Regional Power Plan ML20069C7651982-07-15015 July 1982 Advises That Data Sys Contains No Info Re Plant Species Habitats or Native Plant Communities in Site Vicinity.Info Re Animal Species Will Be Provided Under Separate Cover ML20054M1521982-07-0808 July 1982 Comments on Des Re Const of Facilities ML20063D7781982-07-0202 July 1982 Forwards Analysis of Probability of Accident Involving Truck Shipment of Anhydrous Ammonia.Results Indicated Probability of Spill Simultaneously W/Radiological Release Exceeding 10CFR100 So Low That Control Room Detectors Not Justified ML20054M6981982-07-0202 July 1982 Forwards Amend 25 to PSAR Providing Info on Soils,Soil Structure Interaction Analysis & Site Boundary Turbine Shine Dose & Reflecting Removal of Ammonia Detectors in Control Rooms 1985-08-20
[Table view] |
Text
-
Appendix F Dr. Robert E. Recan Reports 5-.h.5 &l]j h ,F y f,n Uvf .}[hu }%
% ; & s z..a .a s a\"(*sal ( ;k W
&m i 112 :./ kl lla L Sl Li ic:c Asotr.s;u :::. */r.:A?: vm::!. A ==
(7 3 790 1450
- TWX 710 E334323 Septe=ber 18, 1979 P.s. Sandra Wastler Nuclear Regulatory Co==ission Washington, D.C. 20555
Dear Sandra:
I hope that the final report provides you with the necessary evaluation of the EDCON report. As I stated in that report we generally concur with their findings. However, it must always be re=e=bered that =agnetics is inherently a=biguous and the interpretation of such data is as much an art as a science. Thus there are some aspects of the data interpretation that could be reevaluated in the light of additional information. I'll atte=pt in this letter to answer the additional questions that you posed on some aspects of the magnetic data.
First o.f all I think that a southwesterly dip for the plate contact (or at least the serpentine bodies in the Decatur plate) is equally likely.
This is more consistent with the structure of the isolated ano=alies and l their interpretation (e.g., Ly=an Hill) and seems more geologically plausible as serpentine bodies are either absent or extremely deep (as evidenced by our Figure 1) in the area mapped as Shuksan. I was quite i= pressed with the team of John Whetten and Rick Blakely, and think that their co=bined expertise can best address this problem.
As far as the question of a fault in the Skagit Valley, it seems unlikely especially if it would be buried under only 1,000 feet of =aterial.
It is apparent that the Decatur is definitely not at that depth (if there, it must be extre=ely deep) . If there is some other =aterial there, say with a susceptibility contrast of .001 cgs units, then a fault with a 1,000 foot displace =ent would give considerable ano=alies even at 2,500 depth (less displace =ent would produce less a=plitude anomalies but not in direct pro-portion). Thus the likelihood of a fault in this area see=s low but more strict bounds could be put on any hypothetical fault given the geologicaf conditions and types of rocks involved. With such infor=ation the =agnetic ano=alies could be =odcied.
1259 049 F-21 7911020 //] -
1
!b. S:ndra L'astler Fepte:hcr 10, : 7 The B and B f at'lt is a definite linear =apetic feature on the aero-magnetic map, but I concur with EDCON's finding that it is undoubtedly the trace of the plate contact (again if the Decatur were faulted in this region, the downthrown side would have to be qt.ite deep). I guess I keep referring -
to the more magnetic province as the Decatur terrain. This is a result of having talked to k'hetten and having examined the U.S.G.S. regional cap. I think that it shows that this is a coherent unit and that the hypothetical B and B fault in the vicinity of the plant is si= ply the boundary between thi? highly ::p: tic un'.t =d inc itss spatic Shuksan. As I centioned in our report it was dissappointing that EDCON did not consider the U.S.C.S data more.
I have some difficulty in answering your question about che Loveseth fault as we no longer have any of the data to examine. I remember our discussions about it and the mention of some modeling but I also think that sonething led us away fro = the necessity for doing such. I would have to see the data again to connent with any confidence on this. However, you might check to see if this is not associated with the Devil's Mountain fault zone, i.e. , some contact or drag feature.
I hope these answers help in your deliberation. Please do not hesitate to call at any time (I'll try to be more accessible).
Since rely, PHOENIX CORPORATION r
b , Y RobertD.Regan,[h.D.
Director, Earth Sciences Div sion RDR:ke Enclosure F- 22
~ '~
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