ML062000149

E-Mail from D. Croulet of Entergy to Various, Regarding Results 4-10-06

ML062000149
Person / Time
Site:	Indian Point
Issue date:	04/12/2006
From:	Croulet D Entergy Corp
To:	Boska J, Gregory Bowman, Cox M, Noggle J Office of Nuclear Reactor Regulation
References
FOIA/PA-2006-0195
Download: ML062000149 (6)

Text

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From: Croulet, Donald K Sent: Wednesday, April 12, 2006 11:19 AM To: Conroy, Patric W; Cox, Mark R; Bowman, Greg ; 'Timothy Rice'; 'James Noggle'; 'jrwl @nrc.gov';

PRICE, ERNEST JR; Robert Oliveira (boliveira@amnucins.com); Janicki, John W;

'paul-eddy@ dps.state.ny.us'

Subject:

Emailing: Results 4-10-06.pdf Results 4-10-06.pdf Monitoring Well Status as of 4-10-06 kiomabo n tsretd Mm was de&et, inaxmb w Frebodf~orm ofW oni Page 1

MONITORING WE LL APRIL 10, 2006 at 1700 hrs PHASE I WELL STATUS Location Status Notes Most Recent IPEC Tritium IPEC Strontium MW-30 E I -jL'V In Service N/A 511,000 pCi/L 65,000-179,000 (2/07/06)

(3/13/06) See note below MW-31 U2 MOB sidewalk In Service N/A 26,200 pCi/L (2/23/06)

MW-32 In Service Packer testing in progress 17,700 pCi/L (2/7/06)+

I' egro"Pt e' MW-33 U2 Transformer Yard In Service N/A -253,000 pCi/L (3/3/06)

MW-34 U2 Trafisformer Yard In Service N/A 230,000 pCi/L (3/3/06)

MW-35 U2 Transformer Yard In Service NA 119,000 pCi/L (3/3/06)

MW-36 East side of Discharge Canal In Service Highest reading at 52' depth 58,100 pCi/L (3/23/06) 1.29 pCi/L (2/7/06)

MW-37 West Side of Discharge Canal In Service Highest readingat 32' depth 34,100 pC/L (3/27/06) 2.4-22.7 pCi/L (2/28/06)

MW-38 N/A Not Detected on (3/13/06)

I In Service MW-Ill U2 Transformer Yard In Service N/A 236,000 pCi/L (3/3/06) 1.17 pCi/L (2/7/06) 0 On 3/13/06 the 74', 78', and 76' depths on MW-30 were taken for IPEC tritium counting (results: 179,000, 142,000, 65,000 pCi/L respectively) 0 The above MW-30 sample at 72' el was also taken, and sent directly to Teledyne for analysis, as this has been typically higher tritium activity 0 MW-30 cannot be sampled for next 30 days because of outage equipment placement, and area dose rates from demineralizer skid 0 Attempts will be made to get representative Transformer Yard wells ( MW-33,34,35, 111) if possible during outage for MW-30 trending correlation 0 4/3/06 Tei vacuum truck is onsite to vacuum dirt from the drums at each well site. (Dirt produced from the drilling process). This dirt has been sampled and will be dumped onsite. Drums at 31,32,37,39,41,42,44,45, and 52 have been emptied at this time.

PHASE II WELL STATUS Well # Location Status Notes Most Recent IPEC Results MfW-39 [ In Service Packer testing in progress 789 pCi/L (3/02/06)

MW-40 5,. Parking Lot above Sewerage Plant In Service N/A N.D (< MDA) (2/09/06)

MW-41q £ In service N/A 1031 pCi/L (3/16/06)

MW-42 '/C jIn service At 42' depth 261,000 pCi/L (3/22/06) (1.05E-05 uCi/cc Cs-137)

MW-43 '/ [ In service Sampled 26' and 62' deptths N.D (<MDA) (3/15/06)

MW-44 -/7.Drilling complete To be sampled N.D. (<MDA) (3/28/06)

MW-45 . Drilled 65' of 65' Drilling complete 1060 pCi/L (4/4/06)

MW-46 U3 Transformer Yard In Service N/A 1430 pCi/L (3/01/06)

M4W-47 -j In service N/A N.D. (<MDA) (3/16/06)

MW-48 Far South Property Boundary In service N/A N.D. (<MDA) (2/10/06)

MW-49 West side of Discharge Canal In service Split sampled 3/22/06 15,200 pCi/L (3/22/06) at 25.5' depth MW-50 East side of Discharge Canal In service Split sampled 3/22/06 10,700 pCi/L (3/22/06) at 67' depth MW-51 South Hill North of MW-40 Drilling complete N/A N.D (<MDA) (4/4/06)

MW-52 North end of U2 Turbine Bldg Drilling complete N/A N.D (<MDA) (3/31/06)

MOST RECENT TRITIUM ACTIVITY IN MONITORING WELLS (BY INCREASING VALUES)-03/31/06 These numbers below represent the highest activity found in the well. Because some of the wells have multiple sample heights, the values may be lower in the well at other elevations but are not listed below.

MW-42 has 261,000 pCi/L 49' down in the well (shallow well sample point) and 6,550 pCi/L 78' down in the Example: deeper well sampling point.

WELL ACTIVITY WELL ACTIVITY NUMBER (pCi/L) NUMBER (pCi/L)

MW-40 ND MW-45 1060 MW-43 ND MW-51 N.D.

MW-47 ND MW-52 N.D.

MW-48 ND MW-38 ND MW-44 ND MW-39 793 MW-41 1031 MW-46 1430 MW-50 10,700 MW-49 15,200 MW-32 17,700 MW-37 30,000 MW-31 33,100 MW-36 58,100 MW-35 119,000 MW-30 179,000 MW-34 230,000 MW-1Il 236,000 MW-33 253,000 MW-42 261,000

MW-37 IPEC SPLIT SAMPLE RESULT FROM FEB 28. 2006 SAMPLE FROM TELEDYNE LAB Note:

The values given below for Ni-63 are the first reported lab values. Recounting for nickel 63 is in progress and early indication is that tile stated values below are incorrect, and nickel-63 is believed to be either not present, or possibly present at low values. We are awaiting the official Teledyne lab results.

Additionally another lab (Framatome) is counting this Feb 28 sample, and a March 17 sample, for nickel -63 comparisons The values for Strontium-90 as counted by Teledyne are in good agreement with the NRC lab results with the exception of tile 40' elevation where Teledyne reported 3.8 pCi/L and the NRC value were higher ( range of 20 pCi/L)

TELEDYNE LAB RESULTS DEPTH SEA LEVEL H-3 SR-90 N-63 TO BOTTOM ELEVATION pCi/L pCi/L pCi/L 22' -7, 12,800 2.4 42.4 (suspect) 32' -17' 28,600 18.2 34.1 (suspect) 40' -26' 14,700 3.8 56.5 (suspect) 57' -42' 13,300 22.7 29.1 (suspect)

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MOST RECENT SPLIT SAMPLES TAKEN (March 22-April 7,2006)

The data below is the on-site IPEC tritium sample results for screening purposes, prior to ship out to Teledyne Labs:

Well Sample Depth Collected IPEC Counted 3/26/05 0 MW-50 42' Depth (sampled 3/22/06) 8,040 0 MW-50 67' Depth (sampled 3/22/06) 10,700 0 MW-49 25.5' Depth-West (sampled 3/22/06) 15,200 0 MW-49 42' Depth-East (sampled 3/22/06) 10,100 S MW-49 65.5' Depth (sampled 3/22/06) 6,620 0 MW-42 49' Depth (sampled 3/23/06) 261,000 (showed 1.05 E-05 uCi/ce Cs-137 from IPEC count results)

• 0 MW-42 78' Depth (sampled 3/24/06) 6,550 0 MW-36 26' Depth (sampled 3/23/06) 29,500 0 MW-36 52' Depth (sampled 3/23/06) 58,100 0 MW-36 41' Depth (sampled 3/24/06) 28,700 S MW-42 41' Depth (1") (sampled 4/07/06) Awaiting results 0 MW-42 43' Depth (1") (sampled 4/07/06) Awaiting results 0 MW-42 45.5' Depth (1") (sampled 4/07/06) Awaiting results 0 MW-42 48' Depth (1") (sampled 4/07/06) Awaiting results 0 MW-42 78' Depth (1") (sampled 4/07/06) Awaiting results 0 MW-42 51' Depth (2") (sampled 4/07/06) Awaiting results This is only well sample (at depth 49') that showed any gamma activity to date

• • All the above wells were counted for PCBs and found clean MW-37 was also recently sampled for PCBs (this was a non-split sample effort for PCB's) and is being sent out for analysis