March 24th, 2011 – All Exelon sites enhancing offsite monitoring after TMI detects Fukushima radiation

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From: Kern, David \
Sent: Thursday, March 24, 2011 2:23 PM
To: Henderson, Pamela
Cc: Bamford, Peter; Bellamy, Ronald; Heinly, Justin
Subject: RE: 1-131 detected at TMI

Hi Pam:
All Exelon sites are enhancing their offsite monitoring after the Japan event. As part of this TMI monitors rainwater for gamma, every time their sample location collects 1000 milliliter. Yesterday they had sufficient rain water collection to perform analysis.

Date:3/23/11
Location:TMI employee parking lot (about 150 yards outside of protected area) on Three Mile Island,
Middletown, PA
Result: 95 picocuries/liter Iodine-131

TMI mentioned that similar samples taken about 6 miles from Limerick were approximately 90-100 picocuries/liter 1-131.

TMI will now begin checking their normal weekly offsite air samples for gamma, in addition to the gross-beta analysis previously done.

TMI will also now begin checking their biweekly milk samples for gamma.

Dave

From: Henderson, Pamela
Sent: Thursday, March 24, •011 2:14 PM
To: Kern, David
Subject: 1-131 detected at TMI

Hi Dave,
I heard that Iodine-1 31 was-detected at TMI? If so, can you give me the activity (picocuries per liter) detected and where it was detected?

Thanks,
Pam

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