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CROW BUTTE RESOURCES, INC.
86 Crow Butte RoadP.O. Box 169 (308) 665-2215Crawford, Nebraska 69339-0169 (308) 665-2341 - FAX
July 1, 2005
Mr. Gary Janosko, Branch ChiefFuel Cycle Licensing Branch, FCSSc/o Document Control DeskU.S. Nuclear Regulatory CommissionWashington, DC 20555
Re: Source Materials License SUA-1534Docket No. 40-8943SM6-12 Monitor Well Excursion
Dear Mr. Janosko:
On June 27, 2005 during routine biweekly water sampling of Crow Butte Resources, Inc. (CBR)shallow monitor well SM6-12, the multiple parameter upper control limit (UCL) for conductivity andthe single parameter upper control limit (UCL) for chloride was exceeded. As required by LicenseCondition 11.2 of Source Materials License SUA-1 534, a second sample was collected within 48 hoursand analyzed for the three excursion indicator parameters. The results of the second sample exceededthe multiple UCL for conductivity and the single UCL for chloride.
CBR notified Mr. Stephen J. Cohen by telephone on June 28, 2005 of the confirmation of theexceedance as required in License Condition 12.2. A confirmation e-mail was sent on the same date.Laboratory results for the sample analysis for SM6-12 are attached. In addition, graphs are attached forthe three excursion indicator parameters and water level that cover the period from January 10,2005 toJune 27,2005.
CBR believes that this apparent excursion is due to increased groundwater levels caused by thesignificant amount of precipitation received at the facility this spring and is not caused by miningactivity. This conclusion is supported by the following indications:
1. Water level in the well has increased approximately 4 feet this spring and is currently withinapproximately 11 feet of the top of the casing at the well. SM6-12 is located in Mine Unit 6 in anarea of high groundwater near the springs that form the source of English Creek. Groundwaterquality in this area is under the influence of surface water.
CROW BUTTE RESOURCES, INC.
Mr. Gary JanoskoJuly 1, 2005Page 2
2. The chloride concentration has increased from normal concentrations of 4 mg/l to 26 mg/].If the monitor well were affected by an excursion of mining solutions, it would be expected that thechloride concentration would be much higher due to its high concentration in the lixiviant (whichtypically contains chloride concentrations in excess of 500 mg/l) and its mobility in the environment.
3. There are very few injection wells in operation near SM6-12 (
CROW BUTTE RESOURCES, INC.
Mr. Gary JanoskoJuly 1, 2005Page 3
cc: U.S. Nuclear Regulatoiy CommissionMr. Stephen J. Cohen - ADDRESSEE ONLYFuel Cycle Licensing BranchMail Stop T-8A33Washington, DC 20555
Mr. Steve Collings - CBR, Denver
SM6-12
Alkalinity
400 -
350 -
300 -4,wi
= 250 -
200 -
150 -
0 -_
%~~~~~~~ 'PO Po 'P ' it t git elH % t @OA e @ % @
inn
Date
L-Alk MCL --Alkalinity-Alk SCL|
Tuesday, June 28, 2005
CWO
SM6-1 2
Conductivity
850
750736
613
650 -
e 550C
450*
350*
25,n
0V+2 ,2 I 2 PO wo eo PO V/o POo zo POs ooO POgO%
I I I I I I I I I I I I i I I
bt~~~~~< k0 ~ ¢> ) lb 'lb ,O O43 'lb b6\g,° SK tg / 9 8~b
Date
- Cond MCL - Conductihity - Cond SCL
Tuesday, June 28, 2005
SM6-12
Chloride
30 T
25 +
23
1920 +
0
la07E
15 4-
10 +
5-tp L L5' & ON d' -
*s > k? >p (P9 (P *p 7@Pp ¢ ° P P v
SM6-1 2
16
14
12
10.4.0)0,
UL8
6'I-'Water Level I
4
2
0L L LO) U7 L L m L( LO LO L L LO
c N cC CN No M LO -% -X N O Z_ r 0 coNn N r
Date
Perimeter Monitor WellsShallow Monitor WellspCM8-0 9
.SM8-13.Mc-6jCM8-7
.CM8-5SM8-12 .SMS-1 1
Weubouse 27.SM8-09
.CM8-4,sM8-08
,CM8-3
cs4
ASI48-5.SM8-25
WeIKhOUS 37
.cM8g-
DiM84.$M8-29
.SM8-3
.CM6-1O
SM6-2 8
CM6-9
O
.CM6-8
pCM6-7
Sample Date
Analysis Date
612705
6/27/05
Crow Butte ProjectMonitor Well Laboratory Report
Alkalinity Conductivity ChlorideWell ED (mg/L) Alk SCL Alk MCL (Itmho/cm) Cond SCL Cond MCL (mg&L) Cl SCL Cl MCL
SM4-2
SM4-3
SM5-20
SM5-21
SM5-22
SM5-23
SM5-24
SM5-25
SM7-14
SM7-15
SM7-16
CM5-18
CM5-20
CM5-21
CM6-18
CM6-19
SM6-1
SM6-2
SM6-9
SM6-11
SM6-12
SM6-14
SM6-18
SM6-20
CM6-12
190
188
180
180
180
178
170
175
138
150
145
305
335
300
300
300
210
205
230
220
250
203
205
215
300
513
361
268
284
278
287
264
264
180
200
199
441
445
441
442
452
325
291
336
318
348
301
305
323
393
301
223
236
232
239
220
220
150
167
166
367
371
367
368
377
271
242
280
265
290
251
254
269
640
640
510
470
470
470
450
470
330
350
330
1940
2350
1950
1940
1940
550
560
490
490
670
560
570
570
1950
1256 1039
1251
750
755
773
753
700
724
618
495
451
2916
2929
2910
2909
2880
903
1008
815
691
736
936
837
717
1043
625
629
644
628
583
604
515
413
376
2430
2441
2425
2424
2400
752
840
679
576
613
780
697
598
13
11
5.2
4.1
3
3
4.8
6.3
2.6
1.9
1.9
181
230
181
181
181
8.3
12
4.8
5.6
25
13
16
14
127
38
32
29
33
28
28
31
65
24
24
315
310
275
302
295
47
85
51
24
23
58
33
26
88
32
27
24
28
24
24
26
54
20
20
263
258
229
252
246
39
71
42
20
19
48
27
22
233436 364 2794 2328 189 279
c0- .-Monday, June 27, 2005 Page 1 of2Monday, June 27, 2005Page I of 2
Sample Date
Analysis Date
6fl7105
6/27/05
Crow Butte ProjectMonitor Well Laboratory Report
Alkalinity Conductivity Chloride
Well IDI (mgIL) Alk SCL Alk MCL (tmbholcm) Cond SCL Cond MCL (mgIL) Cl SCL Cl MCL
CM6-13
CM6-14
CM6-15
CM6-16A
CM6-17
305
300
290
295
300
446
436
444
418
442
372
364
370
348
368
1940
1930
1950
1930
1940
2866
2909
2779
3082
2779
2388
2424
2316
2568
2316
185
178
183
185
185
285
297
287
338
275
238
247
239
282
229
Monday. June 27, 2005 Page 2 of 2
Mxxbay, June 27, 2005 Page 2 of 2
Sample Date -
Analysis Date
612N5
6I/2805
Crow Butte ProjectMonitor Well Laboratory Report
Alkalinity Conductivity Chloride
Well ED (mg/L) Alk SCL Alk MICLI (limho/cm) Cond SCL Cond ICL| (mgfL) aI SCL Cl MCL
SM8-1
SAM8-2
SM18-3
SM8-4
SM8-5
SM8-8
SM8-9
SA8-11
CM6-1
CMA6-2
CM6-3
CA18-1
CM8-2
CM8-3
CM8-4
CM8-5
CM8-6
SM44
SM4-6
SM5-1
SM5-2
SMS-3
SM5-4
SAM5-5
SM5-6
230
235
230
220
255
233
228
225
290
295
295
300
270
275
308
298
305
205
275
240
190
230
205
235
210
374
353
331
323
346
340
353
323
432
436
441
455
395
432
428
425
432
266
361
363
287
351
327
367
324
312
294.
276
269
288
283
294
269
360
364
367
379
329
360
356
354
360
222
301
302
239
293
272
306
270
530
510
530
520
640
510
520
540
1910
1940
1930
2000
1930
1960
1940
1930
1930
630
680
620
460
610
580
610
580
763
778
720
819
749
864
886
792
3168
2822
2808
3110
3125
3211
3125
3067
3067
1099
1103
1032
714
1048
973
1041
922
636
648
600
683
624
720
738
660
2640
2352
2340
2592
2604
2676
2604
2556
2556
916
919
860
595
874
811
868
768
7.4
4.4
6.1
7.2
15
5.2
5.2
7
183
181
181
185
179
185
185
181
181
12
13
12
5.9
13
19
11
25
24
24
25
23
24
23
24
334
279
269
372
334
367
328
328
317
62
34
57
27
81
66
65
21
20
20
21
19
20
19
20
278
233
224
310
278
306
274
274
264
52
28
47
22
68
55
54
13 47 39
Tuesday, Junc 28, 2005 Page I of 2
Sample Date
Analysis Date
6/28/05
6/28/05
Crow Butte ProjectMonitor Well Laboratory Report
Alkalinity Conductivity ChlorideWell ID (mg/L) Alk SCL Alk MCL (Imho/cm) Cond SCL Cond MCL (mg/L) Ca SCL
SM7-17
SM7-18
SM7-19
SM7-23
CM5-6
CM5-7
CM5-8
CM5-9
CM5-10
CM5-1
CMS-12
CMS-19
SM6-12
SM6-28
PR8
IJ13P
195
135
140
180
300
300
310
303
290
310
298
365
250
270
610
590
209
217
212
278
458
433
448
433
403
438
456
425
348
351
484
415
174
181
176
232
382
361
373
361
336
365
380
354
290
293
403
346
440
350
350
490
1880
1880
1900
1900
1910
1980
1920
2600
670
670
4140
4170
539
513
599
850
2844
2870
2876
2864
2943
2897
2982
2916
736
778
2866
2900
449
427
499
708
2370
2392
2396
2387
2453
2414
2485
2430
613
648
2388
2417
3.7
3.3
2.2
5.2
178
178
178
178
178
183
178
281
26
11
444
433
30
23
38
59
292
288
289
289
333
307
323
320
23
24
282
278
Cl MCL
25
19
31
50
244
240
241
241
277
256
269
266
19
20
235
232
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