## SOUTHWEST GROUNDWATER CONSULTING, LLC 7425 Amanda Ellis Way Austin, TX 78749 512

-560

-9131 bkdarling@southwestgroundwater.com

September 29, 2008

Mr. Jim Blackburn Blackburn & Carter 4709 Austin St

. Houston, TX 77004

RE:Report on Findings Related to the Restoration of In

-Situ Uranium Mines in South Texas

Dear Mr. Blackburn:
You have asked me to research the files of the Texas Commission on Environmental Quality (TCEQ) to determine the track recordof the Underground Injection Control (UIC) office with regard to the restoration of aquifers after mining operations have been completed. As part of my investigation, I have talked with representatives of the office of Underground Injection Control (Mr.Ben Knape, and Mr. David Murry). Mr. Knape made available, for inspection and copying, ring binders of documents related to each in

-situ mining site in south Texas; and Mr. Murry gave me a collection of spreadsheets that allow for comparison of OriginalRestoration Target Values, Amended Restoration Target Values, and Last Sampled Values of 26 water quality indicators listed on each table of restoration values approved by TCEQ. It will be necessary to verify data from the ring binders and the spreadsheets made available by Mr. Knape and Mr. Murry with data from microfiche and microfilm files in the Central Records office of TCEQ. I found the microfiche and microfilm files in Central Records to be unorganized and difficult to navigate, without reference to paper and digital copies from which the data in Central Records were copied.

The spreadsheets were compiled by Mr. John Santos, retiredgeologistwiththe UIC program. A copy of the spreadsheet with dates that restoration tables were amended is
included with this report as Attachment A. Tables of Original Restoration Target Values, Amended Restoration Target Values, and Final Sample Values are listed as Attachments B

### 2



### through D. Comparisons of Original Restoration Target Values with Amended Restoration

Target Values and Last Sampled Valuesforuranium
,radium

-226,arsenic, andsulfate are included as Attachments E through H. I am pulling together information from the large
volume of data scanned from the files of UIC in an effort to re

-produce and update all of Mr. Santos’ spreadsheets. The final step will involve reconciliation of the above data with data
from Central Records.

Regulation of In

-Situ Uranium Mining

The regulation of in

-situ uranium mining in Texas falls under the Texas Railroad Commission (TRC) and the Texas Commission on Environmental Quality (TCEQ). TRC oversees exploration, and TCEQ handles mine permitting, applications for aquifer exemptions, and aquifer restoration. The U.S. Environmental Protection Agency (USEPA) grants aquifer exemptions, based on recommendations made by TCEQ.

Restoration

Restoration is one of the final steps in the process of in

-situ uranium mining. TCEQ sets restoration standards (in the form of Restoration Tables) in the mining permits of operators, based on 26 water quality indicators. Restoration standards vary from one Production Area to another, using background data and data from proposed Production Areas, as collected and submitted by mining companies. My survey of records at UIC and Attachments A through Hreveals that Restoration Tables are routinely amended by TCEQ. Relaxed restoration standards allow operators to depart from original groundwater cleanup objectives.

Amended Restoration Tables

The columns in Attachment A list (1) the names of the in

-situuranium mines, (2) Production Area Authorization (PAA) numbers, (3) restoration methods used at each Production Area, (4 and 5) the starting and ending dates of restoration programs, (6) pore volumes of water removed, (7) millions of gallons of water removed, (8) the date a Restoration Table was amended, (9) the dates that wells at a Production Area were plugged, and (10) the revocation date of the mining permit.

### 3



### Attachment A lists 76 Production Areas and 51 dates on which TCEQ approved Amended

RestorationTables. Some of the Production Areas have been combined, but the final count

inthisreport is based on the number of sites listed in Column 1. Eighty sites are listed in Attachments B through H, and it will be important to reconcile discrepancies between listings in those attachments and the listings of Attachment A.

Some of the sites listed in the first column of Attachment A, such as Gruy, were never mined, and others, such as Kingsville Dome, are in production. In the latter case, the Original Restoration Tables remain applicable, until the operator requests amended values. New sites, such as Goliad, are not listed because Production Areas have not been delineated and Restoration Tables assigned. Thus far, I have not found, in UIC’s records, evidence that requests for Amended Restoration Tables have been denied by TCEQ.

Figures

Figures 1 through 4 show, in the form of bar charts, the Original Restoration Target Values, Amended Restoration Target Values, and Last Sampled Values for uranium, radium

-226, arsenic, and sulfate from mining sites for which all three values were recorded by Mr. Santos (Attachments E through H). The figures are based on data in the spreadsheets listed as Attachments B through D. Attachment B is the list of Original Restoration Target Values; Attachment C is the list of Final Restoration Target Values; and Attachment D is the list of

LastSample Values for all 26 water quality indicators. Attachments E through H list the differences and percent change between the Original Restoration Target Values and the Amended and Final Sample Values for uranium, radium

-226, arsenic, and sulfate, respectively. The following observations are made with respect to Figures 1 through 4:

### 4 

### Uranium

In all but two cases (Benevides 4 and Rosita), the Amended Restoration Table Values and the Last Sampled Concentrations of uranium for the Production Areas listed on Figure 1 (next page) exceed the Original Restoration Table Values approved by TCEQ.

The Primary Drinking Water Standard (PDWS) for Uranium is 0.03 mg/l (or 30

g/l).

In all cases, the Amended and Last Sampled Concentrations of uranium exceed the

PDWS.

The higher Amended Restoration Values and the Last Sampled Concentrations are results of the inability of site operators to reduceuranium concentrations based on their respective proposed groundwater restoration programs. This calls into question the operators’ understanding of the geochemistry of the hydrogeologic systems that they are exploiting.

### 5 

### Figure 1

Radium

-226

All of the 12 Last

-Sampled values were less than the Original Restoration Target Values (Attachment F).

In all cases, radium

-226 of the Amended Restoration Tables and Last Samples
exceed the combined radium

-226 and radium

-228 PDWS of 5 picocuries per liter (pCi/L) (Attachment F; Figure 2, next page).

The Original Restoration Table Values of radium

-226 also exceed the radium

226/radium

-228 PDWS of 5 pCi/L (Attachment F). What has not been established is the range of pre

-exploration background radium

-226 activities because (1) the Texas Water Development Board seldom includes radiochemical data in its groundwater chemistry database, and (2) the operators’ methods of exploration have not been demonstrated not to destabilize uranium orebodies enough to release

uranium and daughter products in sufficient concentrations and activities above

### 6



### true background and pre

-mining levels. In other words, adequate pre

-exploration background studies have not been conducted.

Figure 2

Arsenic

In 53 of 73 cases, the Original Restoration Target Values exceed the current PDWS of 0.01 mg/l (10g/l) (Attachment G).

In 25 cases, the Amended Restoration Target Values exceed the 53 Original Restoration Target Values (Attachment G).

Seven of the 13 Last Sample Values are either equal toor greater than the PDWS of 0.01 mg/l (10g/l) (Figure 3, next page).

The previous PDWS for arsenic was 0.05 mg/l

.

At 12 of the Production Areas, the Original Restoration Target Valued exceeded the
old PDWS.

### 7 

### Figure 3

Sulfate

With one exception, the Amended Restoration Target Values and Last

-Sampled Concentrations of sulfate exceed the Original Restoration Target Values (Attachment H; Figure 4, next page).

Although there is no PDWS for sulfate, the increased Amended and LastSampled

concentrations of sulfate underscore the potential for in

-situ leach mining to increase major dissolved solids that affect the aesthetic properties of drinking

water.

### 8 

### Figure 4

CONCLUSION

Based on data that I have evaluated as of the date of this letter report, I have found a
minimum of 76 authorized in

-situ uranium mining Production Areas in south Texas, and 51 dates on which Original Restoration Tables were amended by TCEQ (Attachment A). Other spreadsheets (Attachments B through H) show as many as 80
ProductionAreas. At least one of the mining areas (Gruy) was never developed. Others such as Kingsville Dome are still in production, so that amended restoration
tables have not been issued.

Thus far, I have found it necessary to rely on data organized in ringbinders at UIC, along with spreadsheets compiled by aretired geologist withthe UIC program. The files in Central Records are on microfiche or microfilm, and there is no straightforward way to locate specific records without going through each fileframe by frame

.The
system seemsto be designed to make itdifficult to find specific files at Central Records.

Thismakes it necessary to relyonpaper records and digital files which representatives
of UIC are reluctant tocertifyas official records, even thoughofficialseals are affixed to

# Attachment A Restoration History

# Restoration History

MINE PAA Method Restorationpore vol.pore vol. =Rest. table Start Endremoved Mill. gal. amended

Benavides RO 8/12/91 Benavides 4RO Boots/Brown 1 9/5/02 Brelum 106-2001RO Brelum 106-2002RO Bruni 1changed to 05 Bruni 2changed to 05 Bruni 3 Bruni 4added to 03 Bruni 5-1RO Feb-90Sep-90 2.4 14 2/25/91 Bruni 5-2RO 2/3/92 Burns Ranch 1 8/14/89 Burns Ranch 2 Burns/Moser 1 12/12/02 Burns/Moser 2 12/19/02 Burns/Moser 3 12/19/02 Burns/Moser 4 12/5/02 Clay West 1 9/9/99 Clay West 2 9/9/99 El Mesquite 1RO 8/14/89 El Mesquite 2RO & inj Oct-90Dec-99 6.4 66.8 5/6/01 El Mesquite 3GW sweep, RO & inj Ja-94Jan-04 11.5 29.5 11/3/04 El Mesquite 4RO & inj Jan-94Oct-01 8.56 252 9/9/03 El Mesquite 7 Gruy 1 Gruy 2 Gruy 3 Hobson 1GW sweep 1/8/90 Holiday 1 Holiday 2RO Oct-90May-99 6 3/9/00 Holiday 3RO 2/20/89 Holiday 4RO & inj Sep-99Nov-01 12.2 1.6 9/9/03 Holiday 5RO & inj Oct-00Mar-04 12.5 27.3 1/31/93 Holiday 6RO & inj Sep-99Apr-01 15.9 25 10/31/02 Holiday 7 Kingsville Dome1 Kingsville Dome2 Lamprecht 1 Lamprecht 2 Lamprecht 3 Lamprecht 4 Las Palmas 1 2/14/93 Las Palmas 2 6/13/93

# Restoration History

MINE PAA Method Restorationpore vol.pore vol. =Rest. table Start Endremoved Mill. gal. amended

Las Palmas 3 7/13/92 Longoria 1GW sweep 8/12/91 Longoria 2GW sweep 8/12/91 McBryde 1GW sweep 8/12/91 Mt Lucas 1 9/9/97 Mt Lucas 2RO & inj Mar-90Mar-96 10.3 9/9/97 Mt Lucas 3 9/9/99 Mt Lucas 4 8/2/98 Mt Lucas 5RO & inj Jun-92Mar-96 9.3 9/9/97 Mt Lucas 6RO & inj Mar-92Sep-98 9 9/9/99 Mt Lucas 7RO & inj Jun-92Oct-99 25.7 183 1/23/00 Mt Lucas 8RO & inj Jun-92Dec-98 23.5 9/9/97 Nell 1ion exchange 6/13/88 O'Hern 1 9/5/02 O'Hern 2RO O'Hern 3 O'Hern 4RO & inj Jan-94Mar-01 10 15.4 10/31/02 Palangana Pawlik 6/22/00 Pawnee 10/22/98 Rosita Rosita 2 Tex-1 RO & inj 12 152 1/23/00 Trevino EDR 4.5 32.95 8/12/91 Trevino 2a EDR Aug-89Jul-91 10 47.46 1/13/92 Trevino 2b EDR Sep-88Nov-89 7.6 12.8 4/9/90 West Cole RO & inj Dec-93Jun-00 10.7 39.1 6/28/01 West Cole 2RO & inj Dec-93Dec-01 19 9.6 1/27/04 West Cole 3RO & inj Apr-95Oct-03 12.1 225.9 3/12/06 Zamzow RO & inj Nov-90Oct-98 7 6/28/01 Zamzow 2RO & inj Nov-90Oct-98 7 6/28/01 Zamzow 3RO & inj Nov-90Oct-98 7 6/28/01 Zamzow 4RO & inj Nov-90Oct-98 7 6/28/01

# Restoration History

MINE

Benavides Benavides Boots/Brown Brelum 106-200 Brelum 106-200 Bruni Bruni Bruni Bruni Bruni Bruni Burns Ranch Burns Ranch Burns/Moser Burns/Moser Burns/Moser Burns/Moser Clay West Clay West El Mesquite El Mesquite El Mesquite El Mesquite El Mesquite Gruy Gruy Gruy Hobson Holiday Holiday Holiday Holiday Holiday Holiday Holiday Kingsville Dome Kingsville Dome Lamprecht Lamprecht Lamprecht Lamprecht Las Palmas Las Palmas Wells Permit/PAA plugged revoked

4/2/03 Jan-91 4/2/03 Jul-03 8/18/03 2/2/89 2/2/89

Oct-91 Jan-93 1/24/91

Aug-03 Dec-03 Dec-03 Mar-03 2/15/04

Oct-01 Feb-05 Nov-03

Nov-91 1/24/91

Jul-01 Dec-89 Nov-03 Dec-05 Mar-02

3/7/00 3/7/00 3/7/00 3/7/00 3/2/03 3/2/03

# Restoration History

MINE

Las Palmas Longoria Longoria McBryde Mt Lucas Mt Lucas Mt Lucas Mt Lucas Mt Lucas Mt Lucas Mt Lucas Mt Lucas Nell O'Hern O'Hern O'Hern O'Hern Palangana Pawlik Pawnee Rosita Rosita Tex-1 Trevino Trevino Trevino West Cole West Cole West Cole Zamzow Zamzow Zamzow Zamzow Wells Permit/PAA plugged revoked

3/2/03 4/2/03 4/2/03 1/26/93 3/2/03 3/2/03 3/2/03 3/2/03

3/2/03 3/2/03 3/2/03 Dec-88 7/25/89 Oct-03 1/25/07 Jan-92 1/25/07 May-01 1/25/07 Dec-02 1/25/07

Oct-00 4/2/02 3/7/00

3/2/03 Dec-91 2/89 Oct-92 2/89 Oct-92 2/89 Nov-01 Feb-04 May-06 11/2/01 11/2/01 11/2/01 11/2/01

# Attachment B Original Restoration Target Values* corrected values mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l SU Calcium Magnesium Sodium Potassium Carbonate BicarbonateSulfate Chloride Fluoride Nitrate-N Silica pH Benavides 1 22 6.2 402 14 2 239 69 517 0.48 2.87 26 38146 Benavides *2 35 13 559 19.9 0.1 181 85 814 0.43 1.3 20.4 8.1 Benavides 3 32 9.4 475 13.6 5 218 86 653 0.55 2.25 21 8.6 Benavides 4 50 15 410 14 2 400 69 517 0.48 2.87 266.5-8.5 Boots/Brown 1 50 9 221 11

-- 300 43 266 0.98 0.2 45 38146 Brelum 106-200 1 40.66 3.5 2138 52.1 14.6 273 54.14 3129.7 1.5 0.33 49.7 8.46 Brelum 106-200 2 21.39 5.28 2356 101 10.6 419.08 67.08 3505 1.035 0.19 43.67 8.23 Bruni 1 241 58.3 382 18.3 4.1 160 118 1010 0.21 10 16.3 38146 Bruni 2 Bruni 3 200 150 465 18

-- 500 125 680 1.8 12 15 Bruni 4 22 30.2 316 13

-- 125 80 672.9 0.2 2 27 Bruni 38107 241 58.3 382 18.3

-- 160 118 1010 0.21 10 16.3 Bruni 38108 241 58.3 382 18.3

-- 160 118 1010 0.21 10 16.36.5-8.5 Burns Ranch 1 Burns Ranch 2 Burns/Moser 1 49 9 321 13

-- 296 39 463 1.44 0.17 43 Burns/Moser 2 60 11 264 15

-- 267 123 320 1 0.11 36 38175 Burns/Moser 3 48 9 174 9

-- 250 18 225 1.2 0.04 40 38175 Burns/Moser 4 46 12 191.5 11 1.8 355 10.3 213.5 0.9 0.83 376.5-8.5 Clay West 1 65 12 282 13

-- 247 85 371 0.4 50 7.9 Clay West 2 75 16 354 17

-- 320 201 424 1.1 0.06 43 8.2 El Mesquite *1 6.16 0.87 382 8.9 8.4 249 61 423 0.53 2.8 18.6 8.58 El Mesquite 2 4.98 0.75 279.1 8.95 17.92 308.62 90.62 186.46 0.96 2.15 24.07 38146 El Mesquite 3 4.13 0.477 279.5 6.38 17.9 324.3 83.2 196.9 0.96 4.25 23.05 8.74 El Mesquite 4 5.2 1.5 340 7.2 17 295 102 301 1 0.47 17 8.98 El Mesquite 7 7.5 1.9 328 8.6 15 288 96 338 0.92 1.94 26 8.74 Gruy 1 95.4 45.2 352 18.2

-- 285 1197 542 0.94 3.09 65 7.7 Gruy 2 116 50 340 21

-- 282 214 555 0.74 0.9 56 7.85 Gruy 3 121 43 239 22

-- 235 144 471 0.6 2.84 66 7.94 Hobson 1 49.1 2 345 29 6.6 230 156 377 0.76 0.33 58 8.15 Holiday 1 9.5 2.3 304 8.1 2.9 295 78 268 0.89 3 21 8.29 Holiday 2 8.5 1 239 6.8 11.8 196 92.6 174 1.2 1.8 19.7 Holiday 3 38.8 15.4 449 16.4 3.8 244.8 92.6 630.4 0.47 3.06 20.4 8.45 Holiday 4 5.5 2.5 335 7.9 14 296 90 289 1.15 0.97 18 8.88 Holiday 5 22 8.3 445 11.1 4.4 240 80 582 0.58 1.87 20 38146 Holiday 6 52.2 24.6 424 15.3 1.5 232 112 643 0.53 2.7 22 8.23 Holiday 7 16 4.8 371 10.56 8 240 61 467 0.57 3.9 21 38146 Kingsville Dome 1 20.8 5.1 344 7.67 38 268 204 234 0.56 0.75 17.9 8.74 Kingsville Dome 2 25.3 5 323 8.2 7 327 224 224 0.65 0.89 27:7.37-8.66 Lamprecht 1 192.8 24.5 431 29.2 3.6 277.1 60.35 517.9 0.6 1.02 37.6 7.64 Lamprecht 2 182 22.8 527 26.4

-- 250 617 656 0.6 1.87 32.2 38146 Lamprecht 3 210.3 25.1 425.6 30.4

-- 267.7 636.5 514.8 0.64 0.76 45.5 38146 Lamprecht 4 210 40.4 471 34..2 5 367 520 619 1.41 1.73 37.3 38146 Las Palmas * 1 126.88 31.35 272.47 18.8

-- 174.8 96.2 566.2 0.318 2.96 42.24 7.7 Las Palmas * 2 132.1 32.3 304 20.3

-- 176 94 631.1 0.35 5.3 45 8.09 Las Palmas * 3 108 24 272 19

-- 174 103 527 0.39 6.3 45 7.83 

## ORIGINAL RTV* corrected values mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l SU Calcium Magnesium Sodium Potassium Carbonate BicarbonateSulfate Chloride Fluoride Nitrate-N Silica pH 

## ORIGINAL RTV

Longoria 1 54.5 15.5 619 20.2 2.3 239.6 182.5 854.5 0.56 0.82 36 8 Longoria 2 77 19 610 23 3.4 238 206 856 0.62 2.68 42 8.28 McBryde 1 197 44 350 43 5 244 138 692 1.2 5 76 8.39 Mt Lucas 1 31 6.8 212.3 7.8

-- 389 76.2 128 2 0.2 31.2 7.91 Mt Lucas 2 30 7.92 224.2 9.51

-- 405 77.2 140.5 1.08 1.11 28 8.11 Mt Lucas 3 28.2 8.3 225 10

-- 416 83.4 122.5 1.3 0.16 24.9 8 Mt Lucas 4 21.3 5.5 372 6.7

-- 342 26 423 0.76 0.01 20 8.1 Mt Lucas 5 30.8 9.1 212 11.4

-- 401 72 133 1.28 0.21 256.5-8.5 Mt Lucas 6 50.2 9.2 477 15.4

-- 271 192 574 0.33 0.46 236.5-8.5 Mt Lucas 7 31.2 6.8 351 10.1

-- 336 167 316 0.32 0.03 26 38146 Mt Lucas 8 32.2 6.6 295 10.9

-- 372 145 213 0.35 0.97 366.5-8.5 Nell 1 79.2 4.14 1932 93 4.6 411.6 15.8 2956 0.78 0.031 55.25 38146 O'Hern 1 0.2 2.9 347 9.7

-- 347.8 141 295.6 1.31 2.78 43.7 8.05 O'Hern 2 13.7 2.7 310 9.7 1.78 347 129 254 1.37 0.86 43.7 8.2 O'Hern *3 200 150 300 12

-- 500 160 300 1.8 10 45 38146 O'Hern *4 14.12 2.8 307.7 9.06 17.57 190.1 132.1 278.8 0.96 2.79 55.1 Palangana 1 200 125 245 19.3 11 500 250 250 1.8 10 44 38176 Pawlik 1A 144 29 750 32

-- 197 14 1405 0.76 0.05 39 38146 Pawlik 1B 51 11 290 16

-- 321 20 386 1.08 0.03 37 38146 Pawnee 1 200 125 200

-- -- 500 250 250 1.8 10 38146 Rosita 1 155 53 422 26

-- 204 196 866 0.81 1.79 506.5-8.5 Rosita 2 170 62 420 28

-- 216 248 870 0.77 1.3 53 38175 Rosita 3 153 47 751 34

-- 231 496 952 1.37 0.97 366.5-8.5 Tex-1 1 69.4 2.4 365 34

-- 317 147 443 0.64 0.21 986.5-8.5 Trevino 1 150 47 380 23

-- 264 189 641 0.778 0.22 51.4 7.11 Trevino 2a 95.9 50.2 392.6 26.4

-- 388.8 239.5 572.4 0.81 0.16 53.9 6.9 Trevino 2b 95.9 50.2 392.6 26.4

-- 388.8 239.5 572.4 0.81 0.16 53.9 West Cole 1 6.64 1.5 295 10 16.4 333 92.4 201 1.95 1.19 57.8 8.71 West Cole 2 8.8 4 345 23 14 369 122 259 1.4 1.6 47 8.5 West Cole* 3 16.8 6.5 398 18.6 17 378 197 301 1.06 2.1 52 8.63 Zamzow 1 286 42.7 425 30.7

-- 308 745 567 0.5 0.19 49 38146 Zamzow 2 306 33 341 24

-- 282 773 514 0.5 0.1 48 38146 Zamzow 3 369 30 449.5 35.5

-- 290.5 1018 499.5 0.55 0.01 62 7.31 Zamzow 4 395 39.5 430 59.5

-- 328 793 720 0.7 0.05 586.5-7.5* corrected values

Benavides 1 Benavides *2 Benavides 3 Benavides 4 Boots/Brown 1 Brelum 106-200 1 Brelum 106-200 2 Bruni 1 Bruni 2 Bruni 3 Bruni 4 Bruni 38107 Bruni 38108 Burns Ranch 1 Burns Ranch 2 Burns/Moser 1 Burns/Moser 2 Burns/Moser 3 Burns/Moser 4 Clay West 1 Clay West 2 El Mesquite *1 El Mesquite 2 El Mesquite 3 El Mesquite 4 El Mesquite 7 Gruy 1 Gruy 2 Gruy 3 Hobson 1 Holiday 1 Holiday 2 Holiday 3 Holiday 4 Holiday 5 Holiday 6 Holiday 7 Kingsville Dome 1 Kingsville Dome 2 Lamprecht 1 Lamprecht 2 Lamprecht 3 Lamprecht 4 Las Palmas * 1 Las Palmas * 2 Las Palmas * 3 

## ORIGINAL RTV mg/l μmhos/cm mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l TDS ConductivityAlkalinity Arsenic Cadmium Iron Lead Manganese Mercury Selenium Ammonia-N Uranium 1211 0 0 0.004 0.0003 2.45 0.023 0.365 0.0003 0.004 0.03 0.083 1663 2982 149 0.008 0.01 1.2 0.05 0.41 0.001 0.01 0.03 0.078 1356 2269 184 0.037 0.01 0.1 0.05 0.01 0.001 0.025 0.05 0.12 1211 2161 199 0.004 0.0003 2.45 0.023 0.365 0.001 0.004 0.03 2

811 1423 252 0.059 0.0001 0.12 0.003 0.05 0.001 0.001 0.2 0.28 5970.8 9979 248 0.074 0.0031 2 0.022 0.078 0.001 0.089 1.09 0.037

6349 11160 349 0.013 0.0126 5.49 0.0134 0.128 0.0009 0.001 0.068 0.0308 2282 3499 134 0.009 0.005 1.945 0.027 0.139 0.0009 0.022 0.57 0.461

2282 3499 134 0.009 0.005 1.945 0.027 0.139 0.0009 0.022 0.57 0.461

960 1579 241 0.076 0.01 0.42 0.028 0.103 0.0027 0.07 0.1 0.3 954 1674 219 0.02 0.0006 0.53 0.003 0.62 0.0055 0.003 0.05 0.05 628 1110 205 0.007 0.0002 0.65 0.002 0.02 0.0006 0.002 0.2 0.082 746.5 1318 291 0.001 0.0001 0.18 0.001 0.025 0.001 0.001 0.21 0.02

945 1840 0.05 0.0003 0.006 0.12 0.0009 0.001 0.22 0.4 1320 2431 262 0.044 0.0018 6.1 0.008 1.195 0.0002 0.004 0.62 0.477 1071 1885 202.5 0.007 0.0005 0.12 0.019 0.014 0.0002 0.004 0.023 0.039

794 1326.9 282.76 0.038 0.0002 0.313 0.516 0.034 0.00014 0.008 0.0456 0.085 785.7 1346.3 285.8 0.086 0.00012 0.25 0.45 0.028 0.00025 0.028 0.49 0.84

940 1628 268 0.002 0.0002 0.18 0.17 0.016 0.0003 0.006 0.09 0.062 965 1640 261 0.001 0.0002 0.23 0.084 0.02 0.0001 0.012 0.1 0.097 1510 2430 24 0.035 0.0001 0.02 0.001 0.04 0.0001 0.013 0.12 1.12 1544 2488 231 0.083 0.0001 0.03 0.001 0.27 0.0001 0.08 0.02 0.045 1261 2100 193 0.043 0.0001 0.073 0.001 0.04 0.0001 0.008 0.1 0.739 1111 1758 195 0.15 0.0009 0.54 0.04 0.1 0.00064 0.008 0.244 0.025 884 1498 247 0.03 0.01 2.08 0.05 0.05 0.002 0.02 0.21 0.23 694 1211 181 0.03 0.005 0.32 0.03 0.02 0.009 0.6 0.2 0.2 1442 2374 206.5 0.08 0.0001 0.272 1.97 0.22 0.0001 0.026 0.138 1.6

934 1599 266 0.008 0.0001 0.27 0.065 0.017 0.0002 0.002 0.05 0.036 1322 2358 204 0.015 0.0001 0.09 0.002 0.013 0.0001 0.007 0.12 0.063 1486 2626 192 0.02 0.0001 0.2 0.001 0.02 0.0001 0.014 0.1 0.368 1110 1930 209 0.05 0.0003 0.17 0.003 0.02 0.0001 0.014 0.14 0.1 997 1717 272 0.005 0.01 0.04 0.02 0.01 0.001 0.007 1.06 0.164 1035 1662 280 0.006 0.0002 0.03 0.004 0.02 0.0001 0.014 0.15 1.89 2022.9 3062.5 193.5 0.013 0.004 0.332 0.014 0.121 0.0009 0.012 0.5 0.16

2178 3466 0.011 0.002 0.332 0.016 0.132 0.0002 0.01 0.91 0.266 2076 3083 193.5 0.026 0.004 0.506 0.018 0.132 0.003 0.026 0.64 0.9 2118 3399 313 0.01 0.002 0.46 0.014 0.127 0.002 0.006 0.07 0.9 2124 2330 143.4 0.0272 0.0001 0.12 0.0053 0.089 0.0006 0.01 0.02 2.913 1490 2430 163 0.01 0.0001 0.45 0.02 0.087 0.0001 0.14 0.039 0.566 1208 2061 143 0.03 0.0001 0.55 0.005 0.046 0.0001 0.137 0.07 2.4* corrected values 

## ORIGINAL RTV

Longoria 1 Longoria 2 McBryde 1 Mt Lucas 1 Mt Lucas 2 Mt Lucas 3 Mt Lucas 4 Mt Lucas 5 Mt Lucas 6 Mt Lucas 7 Mt Lucas 8 Nell 1 O'Hern 1 O'Hern 2 O'Hern *3 O'Hern *4 Palangana 1 Pawlik 1A Pawlik 1B Pawnee 1 Rosita 1 Rosita 2 Rosita 3 Tex-1 1 Trevino 1 Trevino 2a Trevino 2b West Cole 1 West Cole 2 West Cole* 3 Zamzow 1 Zamzow 2 Zamzow 3 Zamzow 4mg/l μmhos/cm mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l TDS ConductivityAlkalinity Arsenic Cadmium Iron Lead Manganese Mercury Selenium Ammonia-N Uranium 1928 0.023 0.0001 0.04 0.003 0.02 0.0003 0.002 0.01 0.047 2013 3509 201 0.023 0.0001 0.24 0.028 0.111 0.0003 0.003 0.01 0.037 1580 0.041 0.0017 0.59 0.228 0.28 0.001 0.049 1.7 0.831 687.8 1140 318.6 0.0057 0.00014 0.18 0.0018 0.015 0.0001 0.001 0.348 0.293

740 1174 333.4 0.0014 0.0001 0.078 0.001 0.0134 0.0001 0.0013 0.116 0.076 728.5 1180 341 0.008 0.0001 0.2 0.001 0.016 0.0001 0.001 0.17 0.77 1096 2076 284 0.015 0.0001 0.3 0.001 0.026 0.0001 0.001 0.09 0.097

727 1166 329 0.003 0.0001 0.03 0.001 0.01 0.0001 0.003 0.12 0.258 1508 2567 222 0.003 0.0001 0.02 0.001 0.01 0.0001 0.004 0.03 0.125 1115 1817 275 0.003 0.0001 0.02 0.001 0.01 0.0001 0.001 0.07 0.047 967 1541 305 0.005 0.0001 0.01 0.001 0.01 0.0001 0.002 0.06 0.334 5383 9539 337.4 0.028 0.001 1.21 0.455 0.257 0.0005 0.0012 7.49 0.041 1052 1728 278 0.2 0.01 2.9 0.25 5.06 0.0003 0.002 2.1 0.28

979 1626 0.2 0.01 3.52 0.25 0.124 0.445 0.01 0.77 0.371 1000 0.05 0.01 6.3 0.05 0.3 0.00003 0.01 0.5 2

952 0.042 0.011 0.63 0.02 0.019 0.008 0.012 0.052 0.307 878 1281 251 0.05 0.01 0.6 0.1 0.1 0.002 0.11 5 2 2607 4566 0.003 0.0002 0.27 0.001 0.028 0.0001 0.001 0.2 0.002 1002 1748 263 0.001 0.0001 0.29 0.001 0.037 0.0001 0.001 0.12 0.002

903 1310 0.05 0.01 0.3 0.05 0.059 0.002 0.05 0.1 2 1933 3388 169 0.009 0.0005 0.105 0.002 0.06 0.0003 0.008 0.38 0.35 2045 3519 177 0.014 0.0002 0.02 0.001 0.03 0.0001 0.006 0.08 0.547 2524 4276 189 0.068 0.002 0.13 0.003 0.04 0.0001 0.034 0.16 0.586 1367 2160 260 0.028 0.0001 0.04 0.001 0.11 0.0001 0.002 0.12 0.05 1577 2761 221 0.089 0.01 0.2 0.04 0.245 0.001 0.001 0.054 0.015 1635 0.032 0.01 0.25 0.02 0.32 0.0003 0.001 0.07 0.036

882.8 1441 296 0.121 0.0001 0.217 0.018 0.046 0.0002 0.006 0.09 0.169 1036 1656 324 0.044 0.0001 0.72 0.009 0.115 0.0001 0.008 0.06 0.662 1234 1938 339 0.028 0.0008 0.58 0.017 0.041 0.0001 0.001 0.09 1.66 2289 3204 275 0.013 0.001 0.29 0.004 0.174 0.0007 0.01 0.22 0.01 2234 3155 245 0.01 0.001 0.15 0.001 0.14 0.0004 0.01 0.3 0.017 2575 3200 238 0.001 0.0001 1.06 0.004 0.38 0.0001 0.001 0.76 0.85 2510 3585 269 0.01 0.0001 4.06 0.006 0.39 0.0001 0.001 0.71 0.217* corrected values

Benavides 1 Benavides *2 Benavides 3 Benavides 4 Boots/Brown 1 Brelum 106-200 1 Brelum 106-200 2 Bruni 1 Bruni 2 Bruni 3 Bruni 4 Bruni 38107 Bruni 38108 Burns Ranch 1 Burns Ranch 2 Burns/Moser 1 Burns/Moser 2 Burns/Moser 3 Burns/Moser 4 Clay West 1 Clay West 2 El Mesquite *1 El Mesquite 2 El Mesquite 3 El Mesquite 4 El Mesquite 7 Gruy 1 Gruy 2 Gruy 3 Hobson 1 Holiday 1 Holiday 2 Holiday 3 Holiday 4 Holiday 5 Holiday 6 Holiday 7 Kingsville Dome 1 Kingsville Dome 2 Lamprecht 1 Lamprecht 2 Lamprecht 3 Lamprecht 4 Las Palmas * 1 Las Palmas * 2 Las Palmas * 3 

## ORIGINAL RTV mg/l pCi/l MolybdenumRadium 0.01 83

0.1 45.17 0.1 173.1 0.01 83 0.12 9.45 0.152 9.36 0.016 1536.5 0.121 90.5

0.121 90.5

0.4 246.6 0.01

0.1 758 0.01 568 0.256 235 0.1 420 0.015 9.98 0.024 14.7 0.036 116.68

0.01 6.2 0.03 10.3 0.016 272

0.02 24 0.01 159 0.133 45.1 0.3 9.1 0.1 5.45 0.116 429.8

0.01 6.8 0.05 14.9 0.06 19.6 0.06 8.7 0.06 21.63 0.38 92 0.144 150.7 0.155 76.7 0.291 127.6

0.17 290 0.04 133.6 0.01 92.3 0.03 155* corrected values 

## ORIGINAL RTV

Longoria 1 Longoria 2 McBryde 1 Mt Lucas 1 Mt Lucas 2 Mt Lucas 3 Mt Lucas 4 Mt Lucas 5 Mt Lucas 6 Mt Lucas 7 Mt Lucas 8 Nell 1 O'Hern 1 O'Hern 2 O'Hern *3 O'Hern *4 Palangana 1 Pawlik 1A Pawlik 1B Pawnee 1 Rosita 1 Rosita 2 Rosita 3 Tex-1 1 Trevino 1 Trevino 2a Trevino 2b West Cole 1 West Cole 2 West Cole* 3 Zamzow 1 Zamzow 2 Zamzow 3 Zamzow 4 mg/l pCi/l MolybdenumRadium 0.03 97 0.03 36.72 0.03 365 0.06 535.8 0.042 391

0.11 314.6 0.05 150.8

0.1 323 0.02 225.4 0.07 56.2 0.08 171 0.126 57.2 0.3 39 1.1 46.2

1 0.2 29.49

1 164 0.01 92.5 0.01 22.7 1 274 0.05 183 0.06 130.3 2.53 87.29 0.014 246

0.34 13.8

0.1 19

0.01 8.98 0.01*19.6 0.011 46 0.006 107.9 0.2 363.49 0.01 45.25 1.05 481.9

# Attachment C Final Restoration Target Values

### Final Restoration Target Values

Units => mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l SU mg/l mmhos/cm mg/l PAA Calcium Magnesium Sodium PotassiumCarbonateBicarbonate Sulfate Chloride Fluoride Nitrate-N Silica pH TDS ConductivityAlkalinity Benavides 1 75 6.2 402 14 2 350 300 517 0.48 2.87 266.5-8.5 1211 Benavides 2 100 13 559 19.9 0.1 325 814 814 1.3 8.1 20.4 8.1 2100 2982 149 Benavides 3 76 9.4 475 13.6 5 300 300 653 0.55 2.55 21 8.6 1358 2269 184 Benavides 4 50 15 410 14 2 400 250 517 0.48 2.87 26 7 1211 2161 199 Boots/Brown 1 75 14 221 12 0 350 75 266 1.2 0.2 456-8 811 1423 260 Brelum 106-200 1 75 30 2138 52 300 3130 1.5 10 49.76-9 5971 Brelum 106-200 2 75 30 2356 101 300 3505 1.8 10 43.676-9 6349 Bruni 1 270 150 410 35 700 300 1100 1.8 10 406.5-8.5 2282 Bruni 2 Bruni 3 139 Bruni 4 139 Bruni 5-1 270 Bruni 5-2 241 58.3 382 35 700 300 1010 1.8 10 406.5-8.5 2282 Burns Ranch 1 Burns Ranch 2 Burns/Moser 1 85 13 321 18 400 90 463 1.44 0.17 43 970 1579 306 Burns/Moser 2 103 17 264 16 290 160 320 1 0.35 36:7-8 948 1674 234 Burns/Moser 3 120 13 174 12 390 90 225 1.2 0.04 407-8 645 1110 315 Burns/Moser 4 220 36 191.5 16 1.8 370 350 270 0.9 0.83 376.5-8.5 1265 1936 300 Clay West 1 100 16 282 15 300 110 371 1.8 0.4 506.5-8.5 945 1840 Clay West 2 95 16 354 17 0 320 300 424 1.1 0.06 43 8.2 1320 2431 262 El Mesquite*1 75 El Mesquite 2 20 3 315 8.95 17.92 420 100 200 0.96 2.15 24.076-9 875 1480 350 El Mesquite 3 21.5 3.9 320 7.5 17.9 410 205 196.9 0.96 4.25 23.56-9 910 1520 340 El Mesquite 4 36 8.5 370 8.5 17 440 300 301 1 0.47 176-9 1180 1830 362 El Mesquite 7 Gruy (Not Mined) 1 Gruy Not Mined) 2 Gruy (Not Mined)3 Hobson 1 70 3.5 370 35.8 6.6 429 253 425 0.94 0.33 75 8.15 1492 2408 313 Holiday 1 Holiday 2 30 4 300 6.8 11.8 400 92.6 174 1.2 1.8 19.76-9 900 1500 350 Holiday 3 38.8 15.4 449 16.4 3.8 244.8 92.6 630.4 0.47 3.06 20.46-9 1442 2374 206.5 Holiday 4 70 16 490 13 14 440 455 350 1.15 0.97 186-9 1610 2500 365 Holiday 5 46 17 445 11.1 4.4 385 285 582 0.58 1.87 206-9 1322 2358 320 Holiday 6 65 24.6 424 15.3 4 4480 270 643 2.7 0.53 22 8.23 1482 2626 395 Holiday 7 Kingsville Dome 1– – – – – – – – – – – – – – – Kingsville Dome 2– – – – – – – – – – – – – – – Lamprecht 1 198 32.6 444 30.8 3.1 300 523 574 1.05 1.36 37.6 7.4 2059 3221 276 Lamprecht 2combined with PAA1 Lamprecht 3combined with PAA1 Lamprecht 4combined with PAA1 Las Palmas 1 220 43 292 21 300 230 610 0.55 8.8 496.5-8.5 1600 2625 250 Las Palmas 2 132.1 32.3 304 23 0 225 180 690 0.57 12.5 456.5-8.5 1656 2773 183

### Final Restoration Target Values

Units => mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l SU mg/l mmhos/cm mg/l PAA Calcium Magnesium Sodium PotassiumCarbonateBicarbonate Sulfate Chloride Fluoride Nitrate-N Silica pH TDS ConductivityAlkalinity Las Palmas 3 200 35 272 19 270 250 570 0.6 6.3 456.5-8.5 1500 2500 220 Longoria 1 100 15.5 619 20 2.3 400 350 854 0.56 0.82 366.5-8.5 1928 Longoria 2 100 19 610 23 3.4 400 450 856 0.62 2.68 426.5-8.5 2200 3509 201 McBryde 1 250 60 350 43 350 500 692 1.2 5 766.0-9.0 1738 Mt Lucas 1 75 13 212.3 11 425 1000 128 2 0.2 31.26.5-8.5 776 1210 349 Mt Lucas 2 80 10 224 25 406.5 100 140.5 1.3 1.11 286.5-8.5 740 1174 333.4 Mt Lucas 3 70 12 225 10 416 95 122.5 1.3 0.16 24.96.5-8.5 728.5 1180 341 Mt Lucas 4 90 12 375 10 510 150 437 1 0.035 216.5-8.5 1122 1984 430 Mt Lucas 5 75 15 212 11.4 450 110 133 1.28 0.21 256.5-8.5 775 1200 375 Mt Lucas 6 160 24 477 18 370 250 574 0.5 0.46 236.5-8.5 1550 2567 300 Mt Lucas 7 90 15 351 12 0 425 250 316 0.4 0.03 266.5-8.5 1115 1817 350 Mt Lucas 8 125 18 295 12 0 425 225 213 0.45 0.97 366.5-8.5 967 1541 330 Nell 1 100 30 1932 93 300 2956 1.8 10 55.25 5383 O'Hern 1 32 8 347 9.7 2 347.8 200 295.6 1.31 2.78 43.76.5-8.5 1052 1728 O'Hern 2 14.7 O'Hern *3 table not amended O'Hern *4 36 7 307.7 9.06 17.57 325 132.1 278.8 0.96 2.79 55.1 952 Palangana 1 200 125 245 19.3 11 500 250 250 1.8 10 446.5-8.5 878 1750 410 Pawlik 1A 225 50 750 32 325 275 1405 0.9 0.05 396-9 2607 4566 290 Pawlik 1B 51 11 290 16 321 20 386 1.08 0.03 376-9 1002 1748 263 Pawnee 1 200 125 200 500 250 250 1.8 10 6-9 903 2400 Rosita 1– – – – – – – – – – – – – – – Rosita 2– – – – – – – – – – – – – – – Rosita 3– – – – – – – – – – – – – – – Tex-1 1 125 5 377 45 327 400 445 0.62 0.12 1106.0-8.5 1500 2400 269 Trevino 1 200 47 375 25 0 265 500 639 0.76 0.29 526.6-8.0 1700 2806 222 Trevino 2a 130 70 420 26.4 130 450 450 650 1 0.16 606.6-8.2 1884 Trevino 2b – – – – – – – – – – – – – – – West Cole 1 25 10 350 15 16.4 670 92.4 201 1.96 1.19 57.86-9 1000 1640 550 West Cole 2 15 7 345 23 14 560 122 259 1.4 1.6 476-9 1036 1700 470 West Cole 3 16.8 6.5 398 18.6 17 532 197 301 1.17 2.1 52 1234 Zamzow 1 317 38.4 450 30.3 0 750 793 538 0.54 0.16 51.66.5-8.5 2289 3204 500 Zamzow 2combined with PAA1 Zamzow 3combined with PAA1 Zamzow 4combined with PAA1

### Final Restoration Target Values

Units => PAA Benavides 1 Benavides 2 Benavides 3 Benavides 4 Boots/Brown 1 Brelum 106-200 1 Brelum 106-200 2 Bruni 1 Bruni 2 Bruni 3 Bruni 4 Bruni 5-1 Bruni 5-2 Burns Ranch 1 Burns Ranch 2 Burns/Moser 1 Burns/Moser 2 Burns/Moser 3 Burns/Moser 4 Clay West 1 Clay West 2 El Mesquite*1 El Mesquite 2 El Mesquite 3 El Mesquite 4 El Mesquite 7 Gruy (Not Mined) 1 Gruy Not Mined) 2 Gruy (Not Mined)3 Hobson 1 Holiday 1 Holiday 2 Holiday 3 Holiday 4 Holiday 5 Holiday 6 Holiday 7 Kingsville Dome 1 Kingsville Dome 2 Lamprecht 1 Lamprecht 2 Lamprecht 3 Lamprecht 4 Las Palmas 1 Las Palmas 2 mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l pCi/l Arsenic Cadmium Iron Lead Manganese Mercury SeleniumAmmonia-N UraniumMolybdenum Radium 0.004 0.0003 2.45 0.023 0.365 0.0003 0.004 0.03 2 0.01 83 0.008 0.01 1.2 0.05 0.41 0.001 0.01 0.03 2 0.1 83 0.037 0.01 0.1 0.05 0.01 0.001 0.025 0.05 3 0.1 173.1

0.01 0.01 2.45 0.02 0.37 0.001 0.01 0.05 2 0.01 83 0.059 0.0001 0.2 0.003 0.05 0.0011 0.002 0.5 0.28 1 150 0.074 0.0031 2 0.022 0.078 0.001 0.089 29 2 1 9.36

0.05 0.0126 5.49 0.0134 0.128 0.0009 0.01 29 2 1 1536.5 0.05 0.01 1.945 0.056 0.139 0.002 0.051 200 5 1 90.5

0.05 0.005 1.945 0.027 0.139 0.0009 0.051 200 4 1 90.5

0.275 0.01 65 0.028 0.15 0.003 0.07 5 0.3 3.9 450

0.02 0.0006 0.503 0.003 0.64 0.0055 0.06 1.2 1.7 0.07 529 0.059 0.0002 2 0.002 0.27 0.0006 0.002 0.2 1.25 0.1 758

0.65 0.0001 8 0.001 0.35 0.001 0.001 0.21 0.2 0.5 675 0.07 0.0003 1.5 0.006 0.75 0.0009 0.02 2.9 0.8 2.9 380 0.044 0.0018 6.1 0.008 3.3 0.0002 0.05 0.62 0.477 0.3 420

0.038 0.0002 0.313 0.516 0.05 0.00014 0.08 0.045 1.35 0.13 46 0.086 0.00012 0.25 0.45 0.028 0.00025 0.105 0.49 2.7 0.11 116.68 0.009 0.0002 0.18 0.002 0.06 0.0003 0.215 0.09 1.95 0.07 20

0.422 0.009 2.09 0.04 0.331 0.00064 0.008 75.5 0.29 3.55 70

0.03 0.005 0.32 0.03 0.02 0.009 0.6 0.2 0.5 0.1 26.6 0.08 0.0001 0.272 1.97 0.022 0.0001 0.026 0.138 2 0.116 429.8 0.008 0.0001 0.27 0.0065 0.05 0.0002 0.155 0.12 2.55 0.075 19 0.015 0.0004 0.09 0.002 0.04 0.0001 0.061 0.012 1.095 0.19 28.5

0.02 0.0001 0.2 0.001 0.1 0.0001 0.37 0.1 2.3 0.11 71

– – – – – – – – – – –

– – – – – – – – – – – 0.013 0.007 0.332 0.014 0.121 0.0009 0.012 0.635 0.757 0.144 218.3

0.073 0.0001 0.2 0.0053 0.5 0.0006 0.564 10 7 0.04 134 0.019 0.0001 0.45 0.02 0.31 0.0001 0.14 0.167 2 0.06 100

### Final Restoration Target Values

Units => PAA Las Palmas 3 Longoria 1 Longoria 2 McBryde 1 Mt Lucas 1 Mt Lucas 2 Mt Lucas 3 Mt Lucas 4 Mt Lucas 5 Mt Lucas 6 Mt Lucas 7 Mt Lucas 8 Nell 1 O'Hern 1 O'Hern 2 O'Hern *3 O'Hern *4 Palangana 1 Pawlik 1A Pawlik 1B Pawnee 1 Rosita 1 Rosita 2 Rosita 3 Tex-1 1 Trevino 1 Trevino 2a Trevino 2b West Cole 1 West Cole 2 West Cole 3 Zamzow 1 Zamzow 2 Zamzow 3 Zamzow 4 mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l pCi/l Arsenic Cadmium Iron Lead Manganese Mercury SeleniumAmmonia-N UraniumMolybdenum Radium 0.03 0.0001 0.55 0.005 0.4 0.0001 0.137 0.15 5 0.15 170 0.023 0.0001 0.04 0.003 0.02 0.0003 0.002 0.01 2 0.03 97 0.023 0.0001 0.24 0.028 0.111 0.0003 0.003 0.01 3 0.03 37 0.041 0.0017 0.59 0.228 0.5 0.001 0.049 1.7 4 0.03 100 0.0057 0.00014 0.18 0.0018 0.05 0.0001 0.003 0.348 0.55 0.5 962

0.007 0.0001 0.078 0.001 0.1 0.0001 0.0013 0.116 0.5 0.8 950

0.02 0.0001 0.2 0.002 0.064 0.0001 0.35 0.17 1.75 1 940

0.1 0.0001 0.09 0.001 0.1 0.0001 0.003 0.08 1.6 1.6 300 0.2 0.0001 0.03 0.001 0.5 0.0001 0.025 0.12 1.5 0.6 750 0.005 0.0001 0.02 0.001 0.1 0.0001 0.015 0.03 2 0.6 750

0.15 0.0001 0.02 0.003 0.15 0.0001 0.01 0.05 1 0.75 250 0.006 0.0001 0.01 0.001 0.25 0.0001 0.002 0.06 1.25 1.5 550 0.028 0.001 1.21 0.455 0.257 0.0005 0.0012 7.49 2 1 57.2 0.2 0.01 2.9 0.25 5.06 0.36 0.61 2.1 1.55 2.1

0.042 0.011 0.63 0.02 0.1 0.008 0.04 0.052 1.2 0.75

0.05 0.01 0.6 0.1 0.1 0.002 0.11 100 2 1.7 275 0.003 0.0002 0.27 0.002 0.09 0.0001 0.001 0.2 0.02 0.07 92.5 0.001 0.0001 0.29 0.001 0.037 0.0001 0.001 0.11 0.002 0.01 22.7

0.05 0.01 0.3 0.05 0.059 0.002 0.05 240 4 5 274

– – – – – – – – – – –

– – – – – – – – – – –

– – – – – – – – – – – 0.35 0.0001 25 0.001 1 0.0001 0.002 0.14 1 0.1 372

0.2 0.01 1 0.06 1 0.001 0.01 5 2 0.5 131 0.05 0.01 0.25 0.02 1 0.0003 0.01 5 2 226

– – – – – – – – – – – 0.121 0.0001 0.217 0.018 0.046 0.0002 0.018 0.09 2.75 0.03 21.5

0.12 0.0001 0.72 0.009 0.115 0.0001 0.04 0.09 2.5 0.025 0.13 0.0008 0.58 0.0017 0.041 0.0001 0.024 0.09 3.15 0.02 46

0.2 0.001 0.915 0.004 0.224 0.0006 0.01 200 3 5 200

# Attachment D Last Sampled Values

## Last Sampled Values
Units => mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l SU Calcium Magnesium Sodium Potassium Carbonate BicarbonateSulfate Chloride Fluoride Nitrate-N Silica pH Benavides 1 67 13 418 11.5 6 3.3 265 432 0.29 0.53 13.7 8.36 Benavides 2 39 20 601 16 0 176 105 903 0.44 2.1 23 8.17 Benavides 3 76 18.6 442 12.6 0 224 188 629 0.32 0.41 18 8 Benavides 4 37 9 372 7 0 254 107 497 0.37 0.1 16 7.7 Boots/Brown 1 Brelum 106-200 1 44 3.6 2184 49 81 3226 1.6 0.01 31 7.97 Brelum 106-200 2 49 5.9 2247 70 102 3326 1 0.01 33 7.89 Bruni 1 120 34.6 253 17 390 142 684 0.3 1.5 30 7.8 Bruni 2 Bruni 3 Bruni 4 Bruni 5-1 Bruni 5-2 129 33.5 248 19 373 142 643 0.325 2.17 39 Burns Ranch 1 Burns Ranch 2 Burns/Moser 1 Burns/Moser 2 Burns/Moser 3 Burns/Moser 4 Clay West 1 Clay West 2 El Mesquite*1 El Mesquite 2 El Mesquite 3 17.9 3.8 274 7.2 4.1 406 170 138 0.71 0.81 13.4 8.32 El Mesquite 4 El Mesquite 7 Gruy 1 Gruy 2 Gruy 3 Hobson 1 Holiday 1 Holiday 2 Holiday 3 Holiday 4 Holiday 5 Holiday 6 Holiday 7 Kingsville Dome 1 Kingsville Dome 2 Lamprecht 1 Lamprecht 2 Lamprecht 3 Lamprecht 4 Las Palmas 1 Las Palmas 2 Las Palmas 3

## Last Sampled Values
Units => mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l SU Calcium Magnesium Sodium Potassium Carbonate BicarbonateSulfate Chloride Fluoride Nitrate-N Silica pH Longoria 1 85 20.6 562 13 6 315 265 712 0.55 0.28 30 8.33 Longoria 2 116 29 652 17 3 366 3881 905 0.51 0.59 30 8.27 McBryde 1 Mt Lucas 1 Mt Lucas 2 Mt Lucas 3 Mt Lucas 4 Mt Lucas 5 Mt Lucas 6 Mt Lucas 7 Mt Lucas 8 Nell 1 O'Hern 1 O'Hern 2 O'Hern *3 O'Hern *4 35.7 5 215.1 7.3 1.37 322.9 121.1 155.8 0.6 28.3 Palangana 1 Pawlik 1A Pawlik 1B Pawnee 1 37 9 169 17 7 484 235 242 0.5 0.02 26 8.11 Rosita 1 Rosita 2 Rosita 3 Tex-1 1 Trevino 1 Trevino 2a Trevino 2b West Cole 1 West Cole 2 West Cole 3 Zamzow 1 Zamzow 2 Zamzow 3 Zamzow 4

## Last Sampled Values
Units =>

Benavides 1 Benavides 2 Benavides 3 Benavides 4 Boots/Brown 1 Brelum 106-200 1 Brelum 106-200 2 Bruni 1 Bruni 2 Bruni 3 Bruni 4 Bruni 5-1 Bruni 5-2 Burns Ranch 1 Burns Ranch 2 Burns/Moser 1 Burns/Moser 2 Burns/Moser 3 Burns/Moser 4 Clay West 1 Clay West 2 El Mesquite*1 El Mesquite 2 El Mesquite 3 El Mesquite 4 El Mesquite 7 Gruy 1 Gruy 2 Gruy 3 Hobson 1 Holiday 1 Holiday 2 Holiday 3 Holiday 4 Holiday 5 Holiday 6 Holiday 7 Kingsville Dome 1 Kingsville Dome 2 Lamprecht 1 Lamprecht 2 Lamprecht 3 Lamprecht 4 Las Palmas 1 Las Palmas 2 Las Palmas 3mg/l mmhos/cm mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l TDS ConductivityAlkalinity Arsenic Cadmium Iron Lead Manganese Mercury Selenium Ammonia-NUranium 1359 2383 253 0.002 0.01 0.01 0.03 0.01 0.001 0.005 0.1 1.04 1875 3448 145 0.004 0.0001 0.01 0.004 0.01 0.0001 0.033 0.04 0.279 1560 2715 184 0.002 0.0001 0.01 0.001 0.18 0.001 0.04 0.16 1.5 1088 2173 208 0.01 0.01 2.7 0.02 0.18 0.001 0.01 0.95

6065 0.017 0.0002 0.12 0.001 0.031 0.0001 0.002 12.7 0.025 6155 0.003 0.0001 0.16 0.001 0.063 0.0001 0.001 5.54 0.013 1395 0.005 0.0001 0.12 0.001 0.02 0.0001 0.012 109.67 1.185

1366 0.003 0.0002 0.186 0.002 0.018 0.0001 0.015 89 3.02

900 1461 338 0.027 0.0001 0.03 0.05 0.014 0.0001 0.102 0.05 2.53

## Last Sampled Values
Units =>

Longoria 1 Longoria 2 McBryde 1 Mt Lucas 1 Mt Lucas 2 Mt Lucas 3 Mt Lucas 4 Mt Lucas 5 Mt Lucas 6 Mt Lucas 7 Mt Lucas 8 Nell 1 O'Hern 1 O'Hern 2 O'Hern *3 O'Hern *4 Palangana 1 Pawlik 1A Pawlik 1B Pawnee 1 Rosita 1 Rosita 2 Rosita 3 Tex-1 1 Trevino 1 Trevino 2a Trevino 2b West Cole 1 West Cole 2 West Cole 3 Zamzow 1 Zamzow 2 Zamzow 3 Zamzow 4mg/l mmhos/cm mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l TDS ConductivityAlkalinity Arsenic Cadmium Iron Lead Manganese Mercury Selenium Ammonia-NUranium 1860 3200 269 0.1 0.01 1 0.05 0.2 0.002 0.05 5 2208 3697 307 0.01 0.01 0.02 0.01 0.01 0.01 0.001 0.17 1.8

706.3 0.039 0.01 0.07 0.001 0.1 0.001 0.039 0.05 0.96

710 2127 408 0.016 0.0001 0.02 0.001 0.02 0.0001 0.001 120 0.672

## Last Sampled Values
Units =>

Benavides 1 Benavides 2 Benavides 3 Benavides 4 Boots/Brown 1 Brelum 106-200 1 Brelum 106-200 2 Bruni 1 Bruni 2 Bruni 3 Bruni 4 Bruni 5-1 Bruni 5-2 Burns Ranch 1 Burns Ranch 2 Burns/Moser 1 Burns/Moser 2 Burns/Moser 3 Burns/Moser 4 Clay West 1 Clay West 2 El Mesquite*1 El Mesquite 2 El Mesquite 3 El Mesquite 4 El Mesquite 7 Gruy 1 Gruy 2 Gruy 3 Hobson 1 Holiday 1 Holiday 2 Holiday 3 Holiday 4 Holiday 5 Holiday 6 Holiday 7 Kingsville Dome 1 Kingsville Dome 2 Lamprecht 1 Lamprecht 2 Lamprecht 3 Lamprecht 4 Las Palmas 1 Las Palmas 2 Las Palmas 3mg/l pCi/l MolybdenumRadium 0.05 17.35 0.01 5.2 0.02 40.5 0.01 61.3

0.08 5.8 0.02 18.7

0.3 59.6

0.5 88

0.097 17.1

## Last Sampled Values
Units =>

Longoria 1 Longoria 2 McBryde 1 Mt Lucas 1 Mt Lucas 2 Mt Lucas 3 Mt Lucas 4 Mt Lucas 5 Mt Lucas 6 Mt Lucas 7 Mt Lucas 8 Nell 1 O'Hern 1 O'Hern 2 O'Hern *3 O'Hern *4 Palangana 1 Pawlik 1A Pawlik 1B Pawnee 1 Rosita 1 Rosita 2 Rosita 3 Tex-1 1 Trevino 1 Trevino 2a Trevino 2b West Cole 1 West Cole 2 West Cole 3 Zamzow 1 Zamzow 2 Zamzow 3 Zamzow 4mg/l pCi/l MolybdenumRadium 30 0.01 27

0.72

0.64 149

# Attachment E Uranium Restoration HistoryUranium Restoration Table Amendment History MINE PAA Original Amended % Change mg/l mg/l Benavides 1 0.083 22309.63855 Benavides 2 0.078 22464.10256 Benavides 3 0.12 3 2400 Benavides 4 2 2 0 Boots/Brown 1 0.28 0.28 0 Brelum 106-200 1 0.037 25305.40541 Brelum 106-200 2 0.0308 26393.50649 Bruni 1 0.461 5984.598698 Bruni 2 0 0 Bruni 3 0 0 Bruni 4 0 0 Bruni 5-1 0 0 Bruni 5-2 0.461 4767.678959 Burns Ranch 1 0 0 Burns Ranch 2 0 0 Burns/Moser 1 0.3 0.3 0 Burns/Moser 2 0.05 1.7 3300 Burns/Moser 3 0.082 1.251424.39024 Burns/Moser 4 0.02 0.2 900 Clay West 1 0.4 0.8 100 Clay West 2 0.477 0.477 0 El Mesquite*1 0.039 0 El Mesquite 2 0.085 1.351488.23529 El Mesquite 3 0.84 2.7221.428571 El Mesquite 4 0.062 1.953045.16129 El Mesquite 7 0.097 0 Gruy 1 1.12 0 Gruy 2 0.045 0 Gruy 3 0.739 0 Hobson 1 0.025 0.29 1060 Holiday 1 0.23 0 Holiday 2 0.2 0.5 150 Holiday 3 1.6 2 25 Holiday 4 0.036 2.556983.33333 Holiday 5 0.063 1.095 Holiday 6 0.368 2.3 525 Holiday 7 0.1 0 Kingsville Dome 1 0.164– Kingsville Dome 2 1.89– Lamprecht 1 0.16 0.757 373.125 Lamprecht 2 0.266 0 Lamprecht 3 0.9 0 Lamprecht 4 0.9 0 Las Palmas 1 2.913 7140.302094 Las Palmas 2 0.566 2 253.35689Uranium Restoration Table Amendment History MINE PAA Original Amended % Change mg/l mg/l Las Palmas 3 2.4 5108.333333 Longoria 1 0.047 24155.31915 Longoria 2 0.037 38008.10811 McBryde 1 0.831 4381.347774 Mt Lucas 1 0.293 0.5587.7133106 Mt Lucas 2 0.076 0.5557.894737 Mt Lucas 3 0.77 1.75127.272727 Mt Lucas 4 0.097 1.61549.48454 Mt Lucas 5 0.258 1.5481.395349 Mt Lucas 6 0.125 2 1500 Mt Lucas 7 0.047 12027.65957 Mt Lucas 8 0.334 1.25274.251497 Nell 1 0.041 24778.04878 O'Hern 1 0.28 1.55453.571429 O'Hern 2 0.371 0 O'Hern *3 2 0 O'Hern *4 0.307 1.2290.879479 Palangana 1 2 2 0 Pawlik 1A 0.002 0.02 900 Pawnee 1B 0.002 0.002 0 Rosita 1 2 4 Rosita 1 0.35– Silver Lake 2 0.547– Silver Lake 3 0.586– Tex-1 1 0.05 1 1900 Trevino 1 0.015 2 Trevino 2a 0.036 2 Trevino 2b 0– West Cole 1 0.169 2.751527.21893 West Cole 2 0.662 2.5277.643505 West Cole 3 1.66 3.1589.7590361 Zamzow 1 0.01 3 29900 Zamzow 2 0.017 0 Zamzow 3 0.85 0 Zamzow 4 0.217 0

# Attachment F

Radium

­226 Restoration History

# Radium 266
Restoration Table Amendment History

MINE PAA Original Amended % Change pCi/l pCi/l Benavides 1 83 83 0 Benavides 2 45.17 8383.7502767 Benavides 3 173.1 173.1 0 Benavides 4 83 83 0 Boots/Brown 1 9.45 1501487.30159 Brelum 106-200 1 9.36 9.36 0 Brelum 106-200 2 1536.5 1536.5 0 Bruni 1 90.5 90.5 0 Bruni 2 0 0 Bruni 3 0 0 Bruni 4 0 0 Bruni 5-1 0 0 Bruni 5-2 90.5 90.5 0 Burns Ranch 1 0 0 Burns Ranch 2 0 0 Burns/Moser 1 246.6 45082.4817518 Burns/Moser 2 0 529 Burns/Moser 3 758 758 0 Burns/Moser 4 568 67518.8380282 Clay West 1 235 38061.7021277 Clay West 2 420 420 0 El Mesquite*1 9.98 0 El Mesquite 2 14.7 46 212.92517 El Mesquite 3 116.68 116.68 0 El Mesquite 4 6.2 20222.580645 El Mesquite 7 10.3 0 Gruy 1 272 0 Gruy 2 24 0 Gruy 3 159 0 Hobson 1 45.1 70 55.210643 Holiday 1 9.1 0 Holiday 2 5.45 26.6388.073394 Holiday 3 429.8 429.8 0 Holiday 4 6.8 19179.411765 Holiday 5 14.9 28.591.2751678 Holiday 6 19.6 71262.244898 Holiday 7 8.7 0 Kingsville Dome 1 21.63– Kingsville Dome 2 92– Lamprecht 1 150.7 218.344.8573324 Lamprecht 2 76.7 0 Lamprecht 3 127.6 0 Lamprecht 4 290 0 Las Palmas 1 133.6 134 0.2994012

# Radium 266
Restoration Table Amendment History

MINE PAA Original Amended % Change pCi/l pCi/l Las Palmas 2 92.3 1008.34236186 Las Palmas 3 155 1709.67741935 Longoria 1 97 97 0 Longoria 2 36.72 370.76252723 McBryde 1 365 100-72.6027397 Mt Lucas 1 535.8 96279.5446062 Mt Lucas 2 391 950142.966752 Mt Lucas 3 314.6 940198.792117 Mt Lucas 4 150.8 300 98.938992 Mt Lucas 5 323 750132.198142 Mt Lucas 6 225.4 750232.741792 Mt Lucas 7 56.2 250344.839858 Mt Lucas 8 171 550221.637427 Nell 1 57.2 57.2 0 O'Hern 1 39 0 O'Hern 2 46.2 0 O'Hern *3 0 0 O'Hern *4 29.49 0 Palangana 1 164 27567.6829268 Pawlik 1A 92.5 92.5 0 Pawnee 1B 22.7 22.7 0 Rosita 1 274 274 0 Rosita 1 183– Silver Lake 2 130.3– Silver Lake 3 87.29– Tex-1 1 246 37251.2195122 Trevino 1 13.8 131849.275362 Trevino 2a 19 2261089.47368 Trevino 2b 0– West Cole 1 8.98 21.5139.420935 West Cole 2*19.6 0 West Cole 3 46 46 0 Zamzow 1 107.9 20085.3568119 Zamzow 2 363.49 0 Zamzow 3 45.25 0 Zamzow 4 481.9 0

# Attachment G Arsenic Restoration History

# Arsenic Restoration Table Amendment History

MINE PAA Original Amended % Change mg/l mg/l Benavides 1 0.004 0.004 0 Benavides 2 0.008 0.008 0 Benavides 3 0.037 0.037 0 Benavides 4 0.004 0.01 150 Boots/Brown 1 0.059 0.059 0 Brelum 106-200 1 0.074 0.074 0 Brelum 106-200 2 0.013 0.05284.615385 Bruni 1 0.009 0.05455.555556 Bruni 2 0 0 Bruni 3 0 0 Bruni 4 0 0 Bruni 5-1 0 0 Bruni 5-2 0.009 0.05455.555556 Burns Ranch 1 0 0 Burns Ranch 2 0 0 Burns/Moser 1 0.076 0.275261.842105 Burns/Moser 2 0.02 0.02 0 Burns/Moser 3 0.007 0.059742.857143 Burns/Moser 4 0.001 0.65 64900 Clay West 1 0.05 0.07 40 Clay West 2 0.044 0.044 0 El Mesquite*1 0.007 0 El Mesquite 2 0.038 0.038 0 El Mesquite 3 0.086 0.086 0 El Mesquite 4 0.002 0.009 350 El Mesquite 7 0.001 0 Gruy 1 0.035 0 Gruy 2 0.083 0 Gruy 3 0.043 0 Hobson 1 0.15 0.422181.333333 Holiday 1 0.03 0 Holiday 2 0.03 0.03 0 Holiday 3 0.08 0.08 0 Holiday 4 0.008 0.008 0 Holiday 5 0.015 0.015 Holiday 6 0.02 0.02 0 Holiday 7 0.05 0 Kingsville Dome 1 0.005– Kingsville Dome 2 0.006– Lamprecht 1 0.013 0.013 0 Lamprecht 2 0.011 0 Lamprecht 3 0.026 0 Lamprecht 4 0.01 0 Las Palmas 1 0.0272 0.073168.382353

# Arsenic Restoration Table Amendment History

MINE PAA Original Amended % Change mg/l mg/l Las Palmas 2 0.01 0.019 90 Las Palmas 3 0.03 0.03 0 Longoria 1 0.023 0.023 0 Longoria 2 0.023 0.023 0 McBryde 1 0.041 0.041 0 Mt Lucas 1 0.0057 0.0057 0 Mt Lucas 2 0.0014 0.007 400 Mt Lucas 3 0.008 0.02 150 Mt Lucas 4 0.015 0.1566.666667 Mt Lucas 5 0.003 0.26566.66667 Mt Lucas 6 0.003 0.00566.6666667 Mt Lucas 7 0.003 0.15 4900 Mt Lucas 8 0.005 0.006 20 Nell 1 0.028 0.028 0 O'Hern 1 0.2 0.2 0 O'Hern 2 0.2 0 O'Hern *3 0.05 0 O'Hern *4 0.042 0.042 0 Palangana 1 0.05 0.05 0 Pawlik 1A 0.003 0.003 0 Pawnee 1B 0.001 0.001 0 Rosita 1 0.05 0.05 0 Rosita 1 0.009– Silver Lake 2 0.014– Silver Lake 3 0.068– Tex-1 1 0.028 0.35 1150 Trevino 1 0.089 0.2124.719101 Trevino 2a 0.032 0.05 56.25 Trevino 2b 0– West Cole 1 0.121 0.121 0 West Cole 2 0.044 0.12172.727273 West Cole 3 0.028 0.13364.285714 Zamzow 1 0.013 0.21438.46154 Zamzow 2 0.01 0 Zamzow 3 0.001 0 Zamzow 4 0.01 0

# Attachment H Sulfate Restoration History

# Sulfate
Restoration Table Amendment History

MINE PAA Original Amended % Change mg/l mg/l Benavides 1 69 300334.782609 Benavides 2 85 814857.647059 Benavides 3 86 300248.837209 Benavides 4 69 250262.318841 Boots/Brown 1 43 7574.4186047 Brelum 106-200 1 54.14 300454.118951 Brelum 106-200 2 67.08 300347.227191 Bruni 1 118 300154.237288 Bruni 2 0 0 Bruni 3 125 0 Bruni 4 80 0 Bruni 5-1 118 0 Bruni 5-2 118 300154.237288 Burns Ranch 1 0 0 Burns Ranch 2 0 0 Burns/Moser 1 39 90130.769231 Burns/Moser 2 123 16030.0813008 Burns/Moser 3 18 90 400 Burns/Moser 4 10.3 3503298.05825 Clay West 1 85 11029.4117647 Clay West 2 201 30049.2537313 El Mesquite*1 61 0 El Mesquite 2 90.62 10010.3509159 El Mesquite 3 83.2 205146.394231 El Mesquite 4 102 300194.117647 El Mesquite 7 96 0 Gruy 1 1197 0 Gruy 2 214 0 Gruy 3 144 0 Hobson 1 156 25362.1794872 Holiday 1 78 0 Holiday 2 92.6 92.6 0 Holiday 3 92.6 92.6 0 Holiday 4 90 455405.555556 Holiday 5 80 285 Holiday 6 112 270141.071429 Holiday 7 61 0 Kingsville Dome 1 204– Kingsville Dome 2 224– Lamprecht 1 60.35 523766.611433 Lamprecht 2 617 0 Lamprecht 3 636.5 0 Lamprecht 4 520 0 Las Palmas * 1 96.2 230139.085239

# Sulfate
Restoration Table Amendment History

MINE PAA Original Amended % Change mg/l mg/l Las Palmas * 2 94 18091.4893617 Las Palmas * 3 103 250142.718447 Longoria 1 182.5 35091.7808219 Longoria 2 206 450118.446602 McBryde 1 138 500262.318841 Mt Lucas 1 76.2 10001212.33596 Mt Lucas 2 77.2 10029.5336788 Mt Lucas 3 83.4 9513.9088729 Mt Lucas 4 26 150476.923077 Mt Lucas 5 72 11052.7777778 Mt Lucas 6 192 110-42.7083333 Mt Lucas 7 167 25049.7005988 Mt Lucas 8 145 25072.4137931 Nell 1 15.8 2251324.05063 O'Hern 1 141 300112.765957 O'Hern 2 129 20055.0387597 O'Hern *3 160 0 O'Hern *4 132.1 0 Palangana 1 250 132.1 -47.16 Pawlik 1A 14 2501685.71429 Pawlik 1B 20 275 1275 Pawnee 1 250 20 -92 Rosita 1 196 25027.5510204 Rosita 2 248– Rosita 3 496– Tex-1 1 147– Trevino 1 189 400111.640212 Trevino 2a 239.5 500108.768267 Trevino 2b 239.5 45087.8914405 West Cole 1 92.4– West Cole 2 122 92.4-24.2622951 West Cole* 3 197 122-38.071066 Zamzow 1 745 197-73.557047 Zamzow 2 773 7932.58732212 Zamzow 3 1018 0 Zamzow 4 793 0