ML20030D773
| ML20030D773 | |
| Person / Time | |
|---|---|
| Site: | 02700039 |
| Issue date: | 03/04/1981 |
| From: | Siefken D NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | NRC |
| Shared Package | |
| ML20030D772 | List: |
| References | |
| NUDOCS 8109160212 | |
| Download: ML20030D773 (5) | |
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Subject:
Trip Report for Meetings with W!iLL Technical Assistance Pantractors for Sheffield Low-Level Waste Disposal Facility
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Date: January 8 and 9,1981-NRC Participant: David Siefken Persons Contacted:
Thursday morning, January 8 Dr. Keror-Cartwright, Illinois State Geological Survey Thursday afternoon, January 8 Dr. James Foster, U. S. Geological Surve; Mr. Rick Healy, U. S. Geological Survey IP. Gary Mackey, U. S. Geological Survey-Friday morning, January 9 Mr. James Rowlands, Ralph Stone and Company, Inc.
!!r. Michael Scholten, Ralph Stone sad Company, Inc.
Mr. Russell Moore, U. S. Ecology, Inc.
Mr. Andy Armbrust, U. S. Ecology, Inc.
Purpose:
The purpose of the trip was to discuss progress to-date with each of the following contractors for Wi1LL Technical Assistance projects:
Contractor:
Fin No.:
Title:
Illinois State Geological Survey B6965 Sheffield Trench Cap Study U. S. Geological Survey B6967 Evaluation of location and Rates of Ground Water Discharge from the Sheffield Low-Level Waste Burial Facility Ralph Stone and Company, Inc.
B6968 Evaluation of Trench Subsidence and Stabilization at the Sheffield Low-Level Waste Disposal Facility i
8109160212 810304 PDR ADOCK O2700039 C
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Discussion:
The following discussion is divided into a brief summary of the individual mcetings with the separate contractors.
Illinois State Geological Survey - Urbana, IL.
1 The meeting with Keros Cartwright covered several subjects and included a visit to their laboratory and introduction to the varicus ISGS staff working on the technical assistance project.
Discussions included needed revisions to the monthly progress reports to more clearly identify what work is being done for each task and who is performing the work. At present, Task 2 (performance objectives and design criteria for trench caps; laboratory and field testing methoos) is the major activity.
The timing for release of FY 81 funds was discussed since approxinately 65%
of the funds for FY S0 have been allocated.
Progress in developing working agreements related to computer modeling at the University of Waterloo was discussed.
The key personnel apparently will not be available to t!e extent needed, therefore Dr. Cartwright will pursue discussions with Dr. Heidari of the Kansas Geological Survey.
Should wor. king agreements for the total proposed scope not be reached, the ISGS could re-assign stuff to perform the major portion of this work in-house, with the previously proposed consulting agreement used primarily for direction and review of the work.
The siting and construction portions of draft 10 CFR 61 were discussed to identify their relationship with this study.
I indicated I would provide a copy of the next draft 10 CFR 61 when available for Dr. Cartwright's.eview.
U. S. Geological Surver - Champaign, IL.
The discussion focused on activities related to extending the ground-water data and models eastward to the off-site ground-water discharge areas.
U. S.
Ecology, Inc. has provided recent aerial photographs to the USGS which cover approximately 1300 feet east of the site boundary. The USGS is making arrangements with Teledyne to extend the coverage (as per our contract) farther east to include the ground-water discharge areas.
The USGS will be looking primarily at the Trescott-Pinder-Larson, two-dimensional, finite-difference flour model and the method of characteristics mcdel for solute transport.
The USGS is proceeding'with plans for. additional borings called for in Task 1.
They anticipate approximately 15 borings w'th split-spoon sampling during drilling and with installation of observatisn wells upon completion. These borings will be located to investigate flow from the northeast and southeast portions of the Sheffield site. The USGS anticipates development of two separate.modeling exercises for these two different flow systems.
They will concentrate initially on the flow through the sand unit frcm the northeast portion of the site; however, I indicated the southeast portion should not be ignored since that is where migration of tritium has been observed within the Sheffield site.
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The USGS has made plans with appropriate property owners for access for the borings; no arrangements have been yet with any driller.
I dircussed several drilling contractors in the area with whom I have had previous successful experiences. The USGS will forward boring locations to the NRC once they are finalized.
Work on the tunnel has included adding extensions at the mouth of the tunnel such that the cut slope above the tunnel could be backfilled to its original contours and seeded.
Bids are currently being requested for grouting behind the tunnel liner; then, installation of testing apparatus will proceed.
Once this instrumentation is installed, the USGS anticipates a full-time person at the Sheffield site.
The USGS has revised the scope and internally funded the erosion study proposed for interagency agreement with the NRC.
The draft of the Final Report on ths Hydrogeology of the Low-Level Radioactive
. Waste Dispr al Site near Sheffield, Illinois (successor to Open File Report 79-1545) is currently under review within the USGS and should be available for NRC review this spring.
Ralph Stone and Company, Inc. - Sheffield,.IL.
The meeting with Raiph Stone and Companyi Inc. consisted of two parts, a discussion of the draft report and a visit to the Sheffield site to review several areas of previous subsidence.
While at the Sheffi. eld site, Russell Moore and Andy Armbrust, U. 5. Ecology, Inc., accompanied during the review of the areas of interest.
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Conclusions:==
The discussions were not of a type which lend themselves to conclusions.
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Subject:
Notes of Discussions with U. S. Ecology, Inc. at the Sheffield site Date: January 9,1981 URCParticioant: David Siefken Persons Contacted: Russell Moore, U. S. Ecology, Inc.
Andy Armbrust, U. S. Ecology, Inc.
Purpose-The purpose of the trip was to discuss progress-to-date with Ralph Stone and Company, Inc. on the WMLL Technical Assistance project " Evaluation of Trench Subsidence and Stabilization at the Sheffiela Low-Level Waste Disposal Facility."
At the conclusion of the site visit, U. S. Ecology, Inc. discussed site maintenance activities related to observations made by James Shaffner and ryself during a site visit on October 14 and 15,1980. These site maintenance activities are reported in this trip report.
Discussion:
In discussion with U. S. Ecology, Inc., Russell Mooro indicated that actions have been taken concerning many of the items reports in the October 14,15 trip report of James Shaffner and myself. Most notably, they include:
1.
Areas of recent seeding and newer vegetative cover, such as trenches 14, 14A,18, and 11, were fertilized in the late fall with liquid nitrogen fertilizer. With the fall precipitation, the seeding did take hold in most places.
2.
Repairs were made to gulleys identified during the October trip.
For trench 14A, the upper portion of the slope has been reworked and additional work on the lower portion is planned for the spring.
3.
Ruts at the east end of trench 11 have been filled.
U. S. Ecology, Inc.
is in the process of reviewing different types of mowers to purchase in order to reduce future damages to vegetative' cover due to mowing.
4.
The low area between trenches 2 and 3 has been filled and smoothed to eliminate the ruts which were holding water.
5.
Additional rock has been added to the bottom of the new drainage way running northward along the west ends of trenches 4, 1, 2, 8, 23, 24, and 25.
The side slopes were seeded and treated with SCR to retard erosion.
Large r
l stone has been added for protection at the discharge pipe of the culvert.
6.
New trench markers have been ordered for several trenches, including 14A, 23 and 25C.
The trench marker at the west end of trench 11 has been filled around and reset.
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2-In additien, Russell Moore indicated that several of the trench markers which were reported to have settled were set flush with the grouad (east marker for 250) or filled around by later maintenance activities (the west marker for trench 1, the west marker for trench 18, and the north marker for trench 10).
For the trench markers reported as nearly illegible (the east trench marker for T-3), Russell Moore pointed out that the data was etched onto the surface and was not worn off due to weathering.
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Conclusions:==
Time did not permit field confirmation of each of the reported maintenance activities.
The discussions were not of a type which lend themselves to conclusions; however, they do demonstrate a concerted effort by U. S. Ecology, Inc. to provide maintenance.
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