ML062000116

E-mail from D. Croulet of Entergy to Various, Regarding Monitoring Well Status as of March 31, 2006-1000 Hours

ML062000116
Person / Time
Site:	Indian Point
Issue date:	04/03/2006
From:	Croulet D Entergy Corp
To:	Cox M, Noggle J Office of Nuclear Reactor Regulation
References
FOIA/PA-2006-0195, R1-C3
Download: ML062000116 (6)

Text

Unknown From: Croulet, Donald K Sent: Monday, April 03, 2006 8:10 AM To: Conroy, Patric W; Cox, Mark R; Bowman, Greg; 'James Noggle'; 'Timothy Rice'; Janicki, John W; PRICE, ERNEST JR; Robert Oliveira (boliveira@amnucins.com)

Subject:

FW: MONITORING WELL STATUS AS OF MARCH 31,2006-1000 HOURS From: Sachatello, Ronald Sent: Friday, March 31, 2006 11:44 AM To: Drake, Richard; Bode, Paul M.; Nuta, Dragos A; English, Christopher; Peters, James; Wilson, Daniel; Sandike, Steven; Kulaga, Joe; Morn, Kenneth; Hinrichs, Gary; McMullin, Kathy; Lavera, Ron; Evers, Bob; Colville, Howard J.;

Colville, Richard; Burns, Thomas; Zolotas, William; Tamburi, Robin M.; Loope, Dennis; Halcomb John W; Bryant, Sandra; 'mbarvenik@gza.com'; 'David Winslow'; Quinn, Dennis; 'saracovelli@gmail.com'; 'jdn@nrc.gov'; 'jdn@nrc.gov';

Croulet, Donald; Jones, T. R.

Cc: Mayer, Don; Axelson, William L; Sachatello, Ronald

Subject:

MONITORING WELL STATUS AS OF MARCH 31, 2006-1000 HOURS vIONITORING WELL US-MARCH 31. 2001

• All wells have been drilled.

• Three wells to date have not had an initial sample (MW-45, 51, 52).

---MW-52 is in process of being sampled today

---MW-51 is being developed today and will be sampled next week

---MW-45 will be sampled next week inaccordance Wth e Freedom of kikxrnab Page 1

MONITORING WELL STATUS MARCH 31,2006 at 1000 hrs PHASE I WELL STATUS Well # Location Status Notes Most Recent IPEC Tritium IPEC Strontium vrW-30 EZ jq- In Service N/A 511,000 pCi/L (2/07/06) 65,000-179,000 (3/13/06) See note below MW-31 U2 MOB sidewalk In Service N/A 33,100 pCi/L (2/7/06)

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

U2 Transformer Yard NAW-33 In Service N/A 253,000 pCi/L (3/3/06)

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

U2 Transformer Yard 9W-35 In Service NA 119,000 pCi/L (3/3/06)

East side of Discharge Canal LMIW-36 In Service Highest reading at 52' depth 58,100 pCifL (3/23/060 1.29 pCi/L (2/7/06)

West Side of Discharge Canal

%4W-37 In Service Highest reading at 32' depth 30,500 pC/L (2/25/06 2.4-22.7 pCi/L (2/28/06)

MW-38 In Service N/A Not Detected on 3/13/06 MW-111 U2 Transformer Yard In Service N/A 236,000 pCiIL (3/3/06) 1.17 pCifL (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) 6 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

PHASE H WELL STATUS Well # Location Status Notes Most Recent IPEC Results e-e'ff q-MW-39 U7 In Service N/A 798 pCi/L (3/02/06)

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

MW-41 21 In service N/A 1031 pCi/L (3/16106)

MW-42 11 service 1In At 42' depth 261,000 pCi/L (3/22/06) (1.05E-05 uCi/cc Cs-13 MW-43 F In service Sampled 26' and 62' depths N.D (<MDA) (3/15/06)

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

MW-45 F Drilled 65' of 65' Drilling complete To be developed and sampled MW-46 U3 Transformer Yard In Service N/A 1430 pCi/L (3/01/06)

MW-47 I .1 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' 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 Developing well Sample week of April 3-7 MW-52 North end of U2 Turbine Bldg Drilling complete Ready for sampling To be sampled

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.

Example: 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 deeper well sampling point.

WELL ACTIVITY STILL AWAITING INITIAL RESULTS NUMBER (pCiA,)

MW-40 ND MW-43 ND MW-47 ND MW-45 NOT SAMPLED YET MW-48 ND MW-51 NOT SAMPLED YET MW-38 ND MW-52 NOT SAMPLED YET 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 the 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 the 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 pCiJL pCi2L 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)

MOST RECENT SPLIT SAMPLES TAKEN (March 22-24, 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 0 MW-49 65.5' Depth (sampled 3/22/06) 6,620 S MW-42 49' Depth. (sampled 3/23/06) 261,000 (showed 1.05 E-05 uCi/cc Cs-137 from IPEC count results)

• 0 MW-42 78' Depth (sampled 3/24/06) 6,550 S 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 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