ML20127P664
| ML20127P664 | |
| Person / Time | |
|---|---|
| Site: | 07000139 |
| Issue date: | 11/23/1992 |
| From: | Joseph Austin NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | Chabot D ENGELHARD CORP. |
| References | |
| NUDOCS 9212030054 | |
| Download: ML20127P664 (2) | |
Text
y..
o
/
UNITED ST ATES 8,'
~.
NUCLEAR REGUL ATORY COMMISSION e
l WASmNoToN, D C,205M N
/
NOV 2 3 7992 Docket No.70-139 Mr. Donald P. Chabot Plant Environmental Engineer Engelhard Corporation Route 152 Plainville, Massachusetts 02762
Dear Mr. Chabot:
The l'.S. Nuclear Regulatory Commission has recently received a copy of the U.S. Environmental Protection Agency's (EPA) Administrative Order I-92-1051 which requires the Engelhard Corporation to evaluate the nature and extent of any releases of hazardous waste or hazardous constituents at the Engelhard site in Plainville, Massachusetts.
As you know, the site in question was foimerly licensed by the U.S. Atomic Energy Commissio'1, the pred?cessor of the NRC, to possess low-en sched uranium "ar the manufacture of uranium fuel elements.
A facility assessment by the EPA published in September 1991, indicated that some areas onsite had absve background levels of gross alpha and gross beta activities.
Therefore, the NRC requests that an analysis for gross alpha and gross bata be performeJ on all soil, r.ediment and water samples taken for the facility investigation ard stabilization measures undertaken in response to EPA's crder.
In areas where grost alpha data exists, and there is an indication of residual contamination above applicable star.dards, (see below)
NRC requests that additianal samples be taken and analyzed isatopically to determine the source of the high radiologi:a1 readings.
Analyti al methods c
should be used that take into account the probable chemical form of ;he uranlun at this site.
For soll and sediment samples, the NRC enriched uranium unrestricted release standard is 30 pCi/g total uranium, as contained in option 1 of the Branch Technical Pusition (P") entitled " Disposal or Onsite St.orage of Thorium or Uranium Waste from Pad Operations," published in the FederQ Reaister (46 FR 52061).
The radiological dose from the BTP soil standard has been calculated to be 2.3 mrem /yr Total Effective Dose Equivalent from any foreseeable use of the property.
For ground water samples, 20 ug/l (30 pCl/l) of total uranium will be used as a reference standard.
This is consistent with EPA's proposed National Primary Drinking Water Regulations for Radionuclides (56 FR 33050) which, for uranium, is meant to protect against both toxic effects and adverse radiological exposure.
hO
, p < y p gt 4
sb;da O t$ n 5 l Q t
9212030054 921123 h
DR ADOCK 0700 9
, j;[!, (N
.j.,
Donald P -Cnabot s Please confirm within 30 days of the date of this letter that Engelhard Corpr ation' will per fcrm the 'nalyses identified above. Questions should be directed to Jack D. Parrott, of my staff, at 301-504-2565.
Sincerely, John H. t.ustin, Chief Decommissioning and Regulatory Issues Branch
-?
Division of Low-Level Waste Management and Decommissioning, IMSS cc:
R. Brackett, EPA J. Chormann, MA DEP Dhtributio_n:
Central-File # 70-139 NMSS r/f LLDRr/f JParrott TCJohnson LBell JAustin MWeber WBrach RBangart JRoth,RI JSurmeier JCope1and ACNW YES _h PDR YES NO Category:
Proprietary _ or CF Only _
NO X G:\\ENGEL.J7P 3
LLWMh LL C
g twM C
0FC 1
JG b,\\Al
[JAustin NAME JPariktt L8 ell n
~DATE
////6/92 u #8/92
/hh92
(/2492
~
~~
C = COVER E = COVER & ENCLOSURE N = N0 COPY 4
4 1
_