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 in accordance Wth e Freedom of kikxrnab Page 1

MONITORING WELL STATUS MARCH 31,2006 at 1000 hrs PHASE I WELL STATUS Well #

Location vrW-30 EZ jq-MW-31 MW-32 NAW-33 MW-34 9W-35 LMIW-36

%4W-37 MW-38 MW-111 U2 MOB sidewalk U2 Transformer Yard U2 Transformer Yard U2 Transformer Yard East side of Discharge Canal West Side of Discharge Canal U2 Transformer Yard Status In Service In Service In Service In Service In Service In Service In Service In Service In Service In Service Notes N/A N/A Packer testing in progress N/A N/A NA Highest reading at 52' depth Highest reading at 32' depth N/A N/A Most Recent IPEC Tritium 511,000 pCi/L (2/07/06) 65,000-179,000 (3/13/06) 33,100 pCi/L (2/7/06) 17,700 pCi/L (2/7/06) 253,000 pCi/L (3/3/06) 230,000 pCi/L (3/3/06) 119,000 pCi/L (3/3/06) 58,100 pCifL (3/23/060 30,500 pC/L (2/25/06 Not Detected on 3/13/06 236,000 pCiIL (3/3/06)

IPEC Strontium See note below 1.29 pCi/L (2/7/06) 2.4-22.7 pCi/L (2/28/06) 1.17 pCifL (2/7/06) 0 6

0 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)

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 MW-30 cannot be sampled for next 30 days because of outage equipment placement, and area dose rates from demineralizer skid 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 #

MW-39 MW-40 MW-41 MW-42 MW-43 MW-44 MW-45 MW-46 MW-47 MW-48 MW-49 MW-50 MW-51 MW-52 Location e-e'ff q-U7 21 11 F

[

F Parking Lot above Sewerage Plant U3 Transformer Yard Status In Service In Service In service 1In service In service Drilling complete Drilled 65' of 65' In Service In service In service In service In service Drilling complete Drilling complete Notes Most Recent IPEC Results N/A 798 pCi/L (3/02/06)

N/A N.D (<MDA) (2/09/06)

N/A 1031 pCi/L (3/16106)

At 42' depth 261,000 pCi/L (3/22/06)

(1.05E-05 uCi/cc Cs-13 Sampled 26' and 62' depths N.D (<MDA) (3/15/06)

To be sampled N.D. (<MDA) (3/28/06)

Drilling complete To be developed and sampled N/A 1430 pCi/L (3/01/06)

N/A N.D. (<MDA) (3/16/06)

N/A N.D. (<MDA) (2/10/06)

Split sampled 3/22/06 15,200 pCi/L (3/22/06) at 25' depth Split sampled 3/22/06 10,700 pCi/L (3/22/06) at 67' depth Developing well Sample week of April 3-7 Ready for sampling To be sampled I

.1 Far South Property Boundary West side of Discharge Canal East side of Discharge Canal South Hill North of MW-40 North end of U2 Turbine Bldg

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 NUMBER MW-40 MW-43 MW-47 MW-48 MW-38 MW-44 MW-39 MW-41 MW-46 MW-50 MW-49 MW-32 MW-37 MW-31 MW-36 MW-35 MW-30 MW-34 MW-1Il MW-33 MW-42 ACTIVITY (pCiA,)

STILL AWAITING INITIAL RESULTS ND ND ND ND ND ND 793 1031 1430 10,700 15,200 17,700 30,000 33,100 58,100 119,000 179,000 230,000 236,000 253,000 261,000 MW-45 MW-51 MW-52 NOT SAMPLED YET NOT SAMPLED YET NOT SAMPLED YET

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 TO BOTTOM 22' SEA LEVEL ELEVATION

-7, H-3 pCiJL 12,800 28,600 14,700 SR-90 pCi2L 2.4 N-63 pCi/L 42.4 (suspect) 34.1 (suspect) 56.5 (suspect) 32' 40'

-17'

-26' 18.2 3.8 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 0

0 0

0 0

S 0

S 0

0 MW-50 MW-50 MW-49 MW-49 MW-49 MW-42 MW-42 MW-36 MW-36 MW-36 Sample Depth 42' Depth 67' Depth 25.5' Depth-West 42' Depth-East 65.5' Depth Collected (sampled 3/22/06)

(sampled 3/22/06)

(sampled 3/22/06)

(sampled 3/22/06)

(sampled 3/22/06)

(sampled 3/23/06)

(sampled 3/24/06)

(sampled 3/23/06)

(sampled 3/23/06)

(sampled 3/24/06) 8,040 10,700 15,200 10,100 6,620 261,000 6,550 29,500 58,100 28,700 IPEC Counted 3/26/05 49' Depth.

78' Depth 26' Depth 52' Depth 41' Depth (showed 1.05 E-05 uCi/cc Cs-137 from IPEC count 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