ML20042F659
| ML20042F659 | |
| Person / Time | |
|---|---|
| Issue date: | 04/23/1990 |
| From: | Randy Hall NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Bischoff E COLORADO, STATE OF |
| Shared Package | |
| ML20042F660 | List: |
| References | |
| REF-WM-48 NUDOCS 9005090215 | |
| Download: ML20042F659 (2) | |
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REGION IV
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URANIUM RECOVERY FIELD OFFICE
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- BOX 25325 -
J DENVER. COLORADO 80225,
' APR 2 3 1990
- URF0:GRK Docket No.~WM-48 Mr. Ed Bischoff UMTRA Program Manager State of' Colorado e
Department of Health E
4270 East 11th Avenue.
Denver,.Colnrado-80220.
Dear Mr. Bischoff:
1 During the past several weeks, our office has had several, meetings with the
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Department of Energy concerning the ground-water issues at.the Bodo C disposal site.
Enclosed for your information' are copies of_ the meeting m
minutes.
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Should you or your staff want to discuss these issues;further, please contact;
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Gary Konwinski of my staff 'at (303) 236-2805.
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Sincerely, q
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Ram &h b m
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.o. h-APR 2 31990 i .i l' - s?,maos4%- UNITED STATES g NUCLEAR REGULATORY COMMISSION N REoloN IV \\ '**** URAN.UM RECOVERY FIELO OfTICE i Box 25325 I DENVER. COLORADO 80225 -l. '. l -l i MAR 23 Icf ~ .j URF0:GRK-Docket No. WM-48 l MEMORANDUM FOR: DocketfileNo..WM-48: s / j FROM: Ga'.y R. Konwinski 1l-Project Manager; i
SUBJECT:
MEETING MINUTES: : GROUND-l'ATER COD?LTANCE STRATEGY AT. THE - I DURANGO SITEi .I A meeting was held in Albuquerque,: New Medico,'on March 14,fl990,. with Jacobs _ Engineering Group, DOE's technical" assistance contractor,jto' discuss the i ground-water compliance strategy. atithe Durango site. ' Compliance with the= ground-water protection standards and: potential travel of-water through the-pile will, rely on the construction of the'capMThe cap will utilize alclay max layer, which has a laboratory hydraulic conductivity of 10E-9Ecm/sec. Due to. ~ f' this,- steady-state conditions will be-developed-about this flux value.= The clay max layer and its ability to limit water movement'through the tailings is vqry dependent upon the quality control; associated with its installation. Currently, there are several open issues, which have been forwarded to DOE by pervious correspondence, associated with the utilization of this material that DOE will need to resolve prior to receiving NRC concurrence in the cover design. l It was agreed that this flux represented a, reasonable italue to base movement of moisture through the, reclaimed tailings. The'10E-9 cm/sec'value will be-i utilized to determine the rate seepage could be delbered to the ground-water. ? system. The ground-water flow path will'then be modeled to determine' water i quality at the point of compliance wells. /7 ' i y Gr.ry. Konwinr,ki' Project Manager' /pproved b,n- +>- % t ' Ramon E'."Ha I i ./ Di recto'.' -]
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t t NUCLEAR REGULATORY COMMISSION ' p S E j REGION IV ~ j [ t URANIUM RECOVERY FIELD OFFICE % ******o box 25325 DENVER. COLORADO 90225 .- { APR I 21990 URF0:GRK 1 Docket-No WM-48 t MEMORANDUM FOR: Docket File'No. WM ' FROM: Gary R. Konwinski = Project Manager i
SUBJECT:
MINUTES OF MEETING:0N 00RANGO GROUND-WATER COMPLIANCE' 3
Participants:
Mike Kearny Elizabeth Damler Steve Hamp; Gary Konwinski A meeting was held at the DOE office in Albuquerque, New Mexico on March 27, 1990. The purpose of the meeting was to discuss outstanding ground-water issues at the Bodo Canyon disposal site, as well as'give.00E, insight into areas where additional data may be needed. An effort is being.made to identifyf issues which nay delay review of the ground-water' sections of the preliminary final' RAP. The first. item of discussion centered' upon there-being several issues relating i to the utilization of Claymax-in the cover design that remained unresolved. l DOE indicated that they.would respond to inese issues. :The ability to use a 10E-9 cm/sec flux rate through the-Claymax material relies. to a great extent on the installation of the overlying rock drain. Due to this, the quality assurance and quality control associated with construction of this. layer.was stressed. t The characterization of the uppermost aquifer.was discussed. It was concluded that sufficient information on the aquifer exists. Due to this, adequate information has been collected to determine the rate and direction of - l ground-water flow. Several areas were discussed where DOE should be certain that sufficient ground-water justification is presented in the RAP. These areas are shown below: ' when will the drain be grouted shut? i what will be the elevation of the hydraulic head in the tails when the grouting takes place? how will the leaking. evaporation pond be repaired? .;p, $$ff-_ A4p. A
. _.~... APR 28 ' 1990 ( 2 APR I 21990 POC wells at the disposal site should be chosen' based upon the greatesta saturated thickness, highest predicted yield,-and downgradient-location. DOE needs to consider supplemental standardsiand ACLs and, if appropriate, apply these. DOE indicated that these issues would be discussed-in the_ prelimiiiary final RAP. Th:s document is' scheduled to be submitted in July, with ground-water section being prepared - for NRC~ review in early to _mid-May. 1' The processing. site was also discussed to' determine what would be.needed.:to' release the area. DOE was; informed that a lega1 opinion on the Lakeview sitel was available, and that this ruling may have application atL the Durango' l{ - processing site. It'was stressed that existing monitoring' wells should have an uninterrupted data base _to determine the;effect on the ground-water. resources ~i from tailings removal' 1 s ary R.' nwinski_ Project-Manager. RponE.H&1l Director. .j i ) 1 4 /W}}