ML071640142
| ML071640142 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe |
| Issue date: | 03/27/2007 |
| From: | Carson A - No Known Affiliation |
| To: | John Hickman, Peckenpaugh J NRC/FSME |
| References | |
| Download: ML071640142 (4) | |
Text
John Hickman - Response to Question Concerning -Resident Farmer Well Page 1 1 From:
"Alice Carson" <acarson 1 967@comcast.net>
To:
'John Hickman' <JBH@nrc.gov>, <jmp@nrc.gov>
Date:
03/27/2007 8:14:38 AM
Subject:
Response to Question Concerning Resident Farmer Well John and Jon, Attached is our response to yourquestion concerning the required pumping rate associated with the resident farmer well. Our basis for the required pumping rate was provided in the Groundwater Compliance Plan. The attached document provides the results of evalautions that demonstrate that the difference in H-3 concentration in the pumped water is small for the case in which irrigation water is included and the case in which it is not. If you have any additional question or wish to discuss this further, please give me a call at (301) 916-3995.
Alice Carson CC:
'Joe Bourassa'" <Bourassa@CYAPCO.com>, "'Greg Babineau'"
<babineau@yankeerowe.com>, "'Gerard P. Van Noordennen'" <VanNoordennen@CYAPCO.com>
I c:\\temp\\GW-J00001.TMP Page 1 1 c:\\temp\\GW*}OOOO1.TMP Pa ge1~
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Response to Question Concerning Resident Farmer Well 03/27/2007 8:13:43 AM "Alice Carson" <acarson 1967@Otcomcast.net>
acarson I 967(&comcast.net Recipients nrc.gov OWGWPO04.HQGWDOOI JBH (John Hickman) nrc.gov TWGWPO03.HQGWDOOI JMP (Jon Peckenpaugh)
CYAPCO.com VanNoordennen CC ('Gerard P. Van Noordennen')
Bourassa CC ('Joe Bourassa')
yankeerowe.com babineau CC ('Greg Babineau')
Post Office OWGWPO04.HQGWDO01 TWGWPO03.HQGWDOO1 Route nrc.gov nrc.gov CYAPCO.com yankeerowe.com Files MESSAGE GW Farmer Well Question.pdf Mime.822 Options Expiration Date:
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Size 582 9157 15791 Date & Time 03/27/2007 8:13:43 AM None Standard No None No Standard
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Groundwater Resident Farmer Well Question from March 26, 2007 LTP Section 5.6.3.2.4 states, "The data collected from the monitoring wells, across multiple aquifers, will be used to ensure that the concentration of well water available, based upon the well supply requirements assumed in Section 6 for the resident farmer, is below the EPA MCLs (e.g., 20,000 pCi/I for H-3)."
The resident farmer well is determined by the individual water needs related to the resident farmer scenario. Section 6 of the License Termination Plan and the Groundwater Compliance Plan for License Termination at YNPS provide the values for these individual water needs:
" Household use. Assumed use of 374 ni/yr or 0.188 gpm
" Livestock use. Assumed use of 76.7 m3/yr or 0.039 gpm
- Irrigation of vegetable plot. Assumed use of 870 m3/yr or 0.437 gpm Irrigation of pasture land. Assumed use of 0 m3/y or 0 gpm
- Drinking water. Assumed 1.9 m3/yr or 0.001 gpm The total of these components was a requirement of 0.67 gpm.
One of the objectives of the Final Groundwater Condition Report (submitted on February 15, 2007) was to demonstrate compliance with the requirement in LTP Section 5.6.3.2.4. Section 6.9.4 of the Final Groundwater Condition Report discusses the resident farmer well scenario. Using the aquifers with the maximum concentrations of H-3 (all in the MW-107 series of wells) to comprise the 0.67 gpm pumping rate, the average concentration of H-3 in the well is 8150 pCi/L for April. 2007. Also discussed in this section of the report were the results of an evaluation that was performed for lower yields to be supplied by this well to determine the impacts on the projected concentration of H-3 in this well. If these same aquifers are pumped at a lower rate of 0.2 gpm (corresponding to approximately the household and drinking water uses only), the average concentration in the well would be' 8160 pCi/L in April 2007. Using the fate and transport model included in the Final Groundwater Condition Report, these concentrations are expected to decrease to 5 100 pCi/L for the 0.67 gpm case and to 5350 pCi/L for the 0.2 gpm case in April 2009. Thus, in either case, the average concentration of the water extracted from the resident farmer's well is well below the EPA's MCL for H-3 of 20,000 pCi/L.