ML090700543

E-mail from Pacific Gas and Electric Company Regarding Preliminary Data for Seismic Discussion

ML090700543
Person / Time
Site:	Diablo Canyon
Issue date:	03/11/2009
From:	Ketelsen S Pacific Gas & Electric Co
To:	Wang A Plant Licensing Branch IV
Wang, A B, NRR/DORL/LPLIV, 415-1445
References
TAC ME0174, TAC ME0175
Download: ML090700543 (3)

Text

From: Ketelsen, Stan C [SCK3@pge.com]

Sent: Wednesday, March 11, 2009 1:27 PM To: Alan Wang Cc: Guldemond, Bill; Sharp, Loren; Cluff, Lloyd; McLaren, Marcia K; Parker, Larry M; Abrahamson, Norman

Subject:

FW: Preliminary Data for Seismic Discussion Alan -

Here is the information that Annie Kammerer requested.

The time period of all the slides that we gave to Annie on Nov. 20, 2008, covers the period October 1, 1987 to March 1, 2007.

The magnitude ranges for the seismicity data shown on the slides are:

Slide 2: Regional Seismicity Based on Local Velocity Model; M 0.1 to 6.5. The M6.5 earthquake is the 2003 San Simeon earthquake.

Slide 3: Seismicity Map and Cross Sections; M 0.4 to 3.5. Note, the magnitude range of the Shoreline seismicity trend within the box shown in this figure is also M 0.4-3.5.

Slide 4: Focal mechanisms; M 1.1 to 4.6. Note that the M 4.6 event, located at the north-northeast edge of the fligure, is an aftershock from the 2003 San Simeon earthquake.

Slides 5 & 6: Seismicity Comparison with raw (unprocessed) aeromagnetic data and Seismicity Comparison with raw (unprocessed) marine magnetic data; M 0.2 to 4.1. The M 4.1 event is also a San Simeon aftershock.

Stan Ketelsen Manager - Regulatory Services Diablo Canyon Power Plant (805) 545-4720 8-691-4720 104/5/536 From: Annie Kammerer [1]

Sent: Monday, March 09, 2009 11:45 AM To: Alan Wang; Guldemond, Bill

Subject:

RE: Preliminary Data for Seismic Discussion Specifically, I need information related to the figure shown as figure 2 in the RIL. I need the date and magnitude ranges of the earthquakes shown.

I am requesting this to address one of the comments by Dr. Cao (who reviewed the document in response our tuesday conference call). His comment is that standard practice is to note the date range and magnitude range (or minimum magnitude) on any figure showing seismicity.

So, I don't actually say anything about it in the document, but I want to add it to the figure (I can add it to the annotation, PG&E doesn't need to update the figure) since he requested it. This will close out all the reviewers comments.

I'm not sure how much effort you put in documenting this as it has no bearing on the analysis.

It's really the type of comment you'd make in reviewing a journal article.

Annie Dr. Annie Kammerer, P.E.

US NRC/RES/DE (301) 251-7695 Office (415) 307-6922 Mobile From: Alan Wang Sent: Monday, March 09, 2009 2:36 PM To: Guldemond, Bill; Annie Kammerer

Subject:

RE: Preliminary Data for Seismic Discussion Bill, Annie has asked for some additional information which I believe was provided over the phone. What is the date range and seismicity range of the data. Please provide this data as she will be referencing it in her work. I will need to docket this information as public since she will be referencing it. Alan Annie, please let Bill know if I have correctly identified what you need. Alan From: Guldemond, Bill [2]

Sent: Thursday, November 20, 2008 4:34 PM To: Alan Wang; Vincent Gaddy

Subject:

Preliminary Data for Seismic Discussion Alan/Vince Attached is some preliminary info that should facilitate our discussion in the morning.

Bill <<DCPP_Nov 20-2008_v2 (3).ppt>>

E-mail Properties Mail Envelope Properties (C7F97EAA3DB12743A56ED3B2C25D69980183AB23)

Subject:

FW: Preliminary Data for Seismic Discussion Sent Date: 3/11/2009 1:26:57 PM Received Date: 3/11/2009 1:26:57 PM From: Ketelsen, Stan C Created By: SCK3@pge.com Recipients:

Alan.Wang@nrc.gov (Alan Wang)

Tracking Status: None WGG4@pge.com (Guldemond, Bill)

Tracking Status: None LDSL@pge.com (Sharp, Loren)

Tracking Status: None LSC2@pge.com (Cluff, Lloyd)

Tracking Status: None MKM2@pge.com (McLaren, Marcia K)

Tracking Status: None LMP1@pge.com (Parker, Larry M)

Tracking Status: None NAA2@pge.com (Abrahamson, Norman)

Tracking Status: None Post Office:

exchange18.Utility.pge.com Files Size Date & Time MESSAGE 16018 3/11/2009 Options Expiration Date:

Priority: olImportanceNormal ReplyRequested: False Return Notification: False Sensitivity: olNormal Recipients received: