ML19211C934
| ML19211C934 | |
| Person / Time | |
|---|---|
| Issue date: | 11/06/1979 |
| From: | Thomas Nicholson NRC OFFICE OF STANDARDS DEVELOPMENT |
| To: | Beraton L NRC OFFICE OF STANDARDS DEVELOPMENT |
| References | |
| RTR-NUREG-0440, RTR-NUREG-440 NUDOCS 8001160026 | |
| Download: ML19211C934 (4) | |
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MEMORANDUM FOR: Leon L. Beratan, Chief Sita Safety Standards Branch
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FROM:
Thomas J. Nicholson, Hydrogeologist Site Safety Stanrlmeds Branch
SUBJECT:
EMERGENCT PLANNING FOR NUCT.11'AR FACILITIES INVOLVING THE POTENTIAL FOR GROUND-WATER CONTArfINATION-t As requested by you on October 29, 1979, I am transmitting to you preliminary criteria for emergency pianung for naclear facilities isvolving the potential for goound-water contamination. In support of the criteria, the follwwing references which provide detailed infornation on nonitoring, analysis, and mitigating action,are enclosed:
i 1.
NUREG-0440, Liquid Pathway Generic Study (Impact of Accidental Radio-i-
active Releases to the Hydrosphera from Floa*.ing and Land-Based Nuclear i
Ptwar Plants), Appendix E - Interdiction for a Postulated Core-Malt Accident, bebruary 1978;-
2.
knerican National Standard for Evalunion of Radf onuclide Transport in Ground-Water for Nuclear Power Sites, Draf t 6, Septenber 1979, and 3.
M-=Aum to R.P. Dedise, A/D, and W. Kreger, A/D, BSE, NRR, from L.G. himan, Chief, HMB, DSE,
Subject:
"Three Mile Island, Unit 2, Lessons Learned in Meteorology and Hydrology, Docket No. 50-320,"
July 3, 1979/
Thomas J. Nicho ou, Hydrogeologist Site Safety Standards Branch 1756 008
,nclosure:
c As stated Distrib'ution:
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K.2. Goller, D/SHSS, w/o enc 1.
Central File Docket No. 50-320 I.C. deberts, AD/SS, w/ enc 1.
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L.G. Enim=n, HMB, NRR, w/o encl.
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EMERGENCY PLANNING CRITERIA PURPOSE:
IN THE EVENT THAT AN ACCIDENT AT A NUCLEAR FACILITY MAY POTENTIALLY CONTAMINATE THE GROUND-WATER REGIMEN, THE 70LLOWING CRITERIA SHOLLD BE FCLLOWED.
I.
IDENTIFICATION OF THE CONTAIMIENT A.
Location of the Contaminated Source B.
Determination of the Concentration and Rate of Movemenc from the Source to the Water-Table and/or Confined Aquifers C.
Identification of the Nearest Ground-Water Users and Surface-Water Discharge Points D.
Estimation of the Average Mean Fore Velocity of the Convective Gr~1nd-Water Flow and the Approximate Time of Arrival of the Contaminant Front to Nearby Water-Users, and Surface-Water Bodies II.
NOTIFICATION TO FEDERAL, STATE, COUNTY, AND LOCAL AUTHORITIES OF THE POTENTIAL FOR GROUND-WATER CONTAMINATION A.
Notification to Public Health Officials Including EPA, State Natural Resource Departments, and Municipal Water Authorities B.
Notification to " Action Agencies" that can Initiate a Monitoring / Surveillance Program (see Reference #3)
C.
Contact Federal, State, and Local Sources of Information (i.e., USGS WRD District Office, Ar=y Corps of Engineers, EPA Regional Offices, State Agencies, etc.)
III.
IDENTIFICATION OF THE GRCUND-WATER SYSTEM AND THE AVAILABILITY OF NEARBY ' ELLS FOR MONITORING A.
Literature Research of Ground-Water System Identification (FSAR and ER's) 1.
Phreatic and piezemetric levels via topographic, water-level contour, and geologic maps 2.
Delineation of hydrostratigraphic units.
3.
Location of watershed divides, rivers, lakes, springs, swamps, and other surface-water recharge and discharge points 4.
Previous field tests, pump tests, and other in-situ 175o g
f enaivets
B.,, Location of Nearby Water Wells, Both Active, Dormant,
and' Abandon 1.
Local water district files (i.e., USGS WRD, State Surveys, and Water Management Districts) 2.
Map identification 3.
Field reconnaissance C.
Review and Update the Nuclear Facility's Monitoring Program 1.
Base-line =cnitoring program reports 2.
Location of on-site monitoring wells 3.
Spill / contamination analysis IV.
REFINED ANALYSIS OF CON *AMINANT M)VEMENT A.
Determination of Initial Source Concentration B.
Calculation of Ground-Water Flow (Darcy's Equation) 1.
Velocity 2.
Dilution Factor C.
Construction of a Flow-Net for Determination of Flowlines and Equipotentials D.
Identification of Prevalent Pathways E.
Determination of Dispersive and Sorption / Desorption Properties of the Geologic Medium F.
Analytical Model to Determine Concentration and Arrival Times at Various Horizontal and Vertical Distances from the Contaminant Source (Using the Convective-Dispersive Transport Equation)
V.
CONSULTATION WITH ACCIDENT ANALYSIS BRANCH, RADIOLOGICAL ASSESSMENT BRANCH (IF RADIOACTIVE) AND/OR ENVIRONMENTAL SPECIALISTS BRANCH (IF T0XIC), i.ND/OR EFFLUENT TREATMENT SYSTEMS BRANCH (IF SURFACE RELATED)
A.
Determination of Contaminant Severity with Respect to 10 CFR 20, Appendix 3, Table II, Column 2 P.
Comparison of Concentrations to EPA, State, and Local Ground-Water S tandards C.
Need for Additional Monitoring 1.
Location of needed monitoring wells (vaitical and horizontal geometry) 2.
Identification of parameters and field tests 1756 010
- D.
Identification of Degree of Contamination of Water Sapplies 1.
Designation of water wells and surface bodies not usuable 2.
Identification of water supplies in direct threat and instigation of a constant surveillance program 3.
Identification of nearby alternate sources for replacement purposes VI.
INITIATION OF DETAILED MONITORING PROGRAh A.
Construction of Additional Monitoring Wells B.
Installation of Monitoring Equipment C.
Assignment of Field Personnel to a Scheduled Surveillance Program VII.
(IF WARRANTED) MITIGATION AND REHABILITATION PROGRAM A.
Contaminant Isolation 1.
Induce cone of depression via recovery wells 2.
Slurry wall or cement bentonite isolation and/or injection well mounds B.
Contaminant Removal 1.
Recovery wells 2.
Chemical desorptive solutions with couplet well design systems (see NUREG/CR-0311, Groucd-Water Elements of In-Situ Leach Mining of Uranium, August 1978)
C.
Treatment and Ultimate Removal of Recovered Contaminated Fluid VIII.
CONTINUED MONITORING AND ANALYSIS A.
Determination of the Tacovery of the Local Ground-Water Quality B.
Final Abandonment Schedule of the Surveillance and/or Rehabili-tation Program 1756 011
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