DRC-2012-001165 - 0901a068802b1550

State of Utah
GARYR HERBERT
Governor
GREG BELL
Lieutenant Governor
Department of
Environmental Quality
Amanda Smith
Executive Director
DIVISION OF RADIATION CONTROL
Dane L Finerfrock
Director
ORC-2012-001165
MEMORANDUM
TO Phil GobVe
FROM Dean Henderson
DATE January 25 2012
SUBJECT Review of the 2011 Annual Tailings Cells Wastewater Sampling Reports
for the Denison Mines (USA) Corp
White Mesa Uranium Mill near Blanding Utah
This is a review of the 2011 Annual Tailings Cells Wastewater Samplmg Report dated November
30 2011 (hereafter Report ) for the Denison Mines (USA) Corp (hereafter DUSA ) White
Mesa Uranium Mill near Blanding Utah (hereafter Mill ) For the review of the 2011 Report
the following enforcement documents will be use
• White Mesa Uranium Mill Ground Water Quality Assurance Plan (hereafter QAP )
Revision 6 0 dated March 22 2010
• Groundwater Discharge Permit No UGW370004 (hereafter Permit ) Permit version that
was signed by on January 20 2010
• Tailings and slimes Drain Sampling Program (hereafter Plan ) dated November 20
2008
The review for the Report will be 1) Summary of Compliance and Comments on Cell 2 slimes
drain and LDS
Summary of DUSA Non compliance with the Follow Requirements of the Plan
Compansons between DRC sample Cell 3 and DUSA sample Cell 3 analytical results are
summanzed m Table 7 in Attachment 1 below To determine if samples results between two
samples from two different laboratones are comparable a relative percent difference (hereafter
RPD ) of 30% IS acceptable (DRC 2007) The RPD compansons between the analytical results
were below 30% with the exception contaminants listed in Table 1 below
168 North 1950 West Salt Lake City UT
Mailing Address PO Box 144850 SaltLakeCity UT 84114 4850
Telephone [phone] Fax [phone] TDD [phone]
wwwd q thg
Pr t d 100% y I d p p
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Table 1
Sample Duplicate Of DRC Cell 3 and DUSA Cell 3 2011
RPD Greater than 30%
Contaminants Cell 3 (DRC) Cell 3(DUSA) RPD (%)
Ammonia (as N) (mg/l) 499 6 470 166
Cadmium (pg/1) 18 300 12 200 40
Mercury (p g/1) 15 6 30 9 66
Tin(pg/1) 602 325 60
Acetone(pg/l) 74 6 330 126
Chloroform(pg/l) 15 3 31 68
TDS 452 000 296 000 41 7
Calcium (mg/l) 397 200 66
Fluonde (mg/l) 6 590 64 1 198 1
Potassium (mg/l) 1 770 2 590 37 6
The purpose for the DRC to conduct split samplmg of the tailings wastewater is to inventory
contaminants in the wastewater to identify contaminants to be monitored in the monitonng wells
DRC staff feels these RPD exceedances are not a real concem and it is reasonable to compare the
analytical results between the two samples
It appears that DUSA was m compliance with the QAP Permit and Plan which included
sampling locations sample collection methodology analyzed for required parameters reporting
and of the QA/QC requirements with exception of the two requirements below
1 Part of section 9 1 4(a) of the QAP requires RPDs will be calculated in camparisons of
duplicate and original field sample results Non conformance will exist when the RPD >
20%
DUSA duplicate sample for the 2011 waste water sampling event was for Tailings Cell 4A
LDS Companng the RPD for this sample and its duplicate (identified as Cell 4A BC) acetone
(22 3%) and chloroform (23 7%) exceeded the 20% RPD (see Table 6 in Attachment 1) The
purpose for annual monitonng the wastewater at the Mill is to inventory the contammants and
their concentrations to determine contaimnants that will be required for analyze in the
compliance groundwater monitonng wells Therefore even though duplicate sample shows
that chlonde exceeds the RPD of 20% the purpose for annual monitonng the wastewater in
Cell 1 was accomplished and no enforcement m recommended
It was observed in the 2011 Report contrary to the requirements to Section 5 of the Plan and
Section 8 2 of the QAP DUSA failed to meet the minimum detection limit for THF m Tailing
Cell 1 The THF GWQS is 46 pg/L and the reported laboratory detection limit was < 500
pg/L DUSA explained in section 3 3 5 of the 2010 Report
The one case in which the reported value for the analyte was not higher than the increased
reporting limit involved the tetrahydrofuran ( THF ) results for the Cell 1 tailings fluid The
THF result in Cell 1 tailings fluid was reported as nondetect at 500 ug/L due to sample
Page 3
i
dilutions which were necessary due to interferences from high concentrations of other
analytes (most likely metals) in the sample The permit requires a reportmg limit less than the
Groundwater Quality Standard { GWQS ) of46 0 ug/L The laboratory inadvertently
reported the THF data from the diluted analysis The laboratory did analyze the sample at a
lower dilution but due to interferences in the sample QC failed and the analysis was not valid
The laboratory has been advised to report all future nondetected analyses with a reporting
limit below the GWQS The THF results for the all ofthe other samples were acceptable or
were diluted due to THF concentrations which resulted in the reported concentrations being
higher than the required reporting limit
Because DUSA has an acceptable plan of action to resolve this noncomformence with Section
5 of the Plan and Section 8 2 of the QAP it is recommended that there should be no
enforcement action taken at this time
• r
Page 4/ \
I.
Attachment 1 ^ ,
i! J Tables 1 7
3
/
1
1
/
Table 1
Historic Analytical Data for Wastewater in Cell 1
Parameter GWQS Cell 1
1987 2003 2007 2008 2009 2010 2011
Nutrients (mg/L)
Ammonia (as N) 25 7800 3308 10628 5250 15 200 8 120 12 900
Nitrate & Nitrite (as N) 10 <100 41 8 269 4 64 9 142 58 212
Heavy Metals (pg/L)
Arsenic 50 440 000 121 267 849 000 271 000 436 000 74 400 299 000
Beryllium 4 <2000 475 2 262 500 410 338 1 270
Cadmium 5 6 600 3 997 29 320 8 790 9 120 2 940 13 700
Chromium 100 13 000 6 365 29 940 6 760 18 700 5 620 22 700
Cobalt 730 12 000 NA 88 240 23 500 97 500 16 200 56 000
Copper 1 300 740 000 196 667 881 000 360 000 168 000 125 000 483 000
Iron 11 000 3 400 000 2 420 000 1 348 000 3 280 000 2 390 000 3 400 000 8 940 000
Lead 15 <2000 3 289 27 420 11 200 10 600 9 240 23 600
Manganese 800 140 000 162 167 990 200 206 000 723 000 173 000 735 000
Mercury 2 NA NA ND ND 7 61 7 20 61 40
Molybdenum 40 240 000 5 055 415 600 106 000 142 000 35 300 235 000
Nickel 100 370 000 3 695 40 860 320 000 156 000 27 500 43 700
Selenium 50 <2000 2 028 15 420 13 000 14 800 5 220 11 600
Silver 100 <5000 NA 1 559 449 558 155 1 110
Thallium 2 450 000 NA 408 165 387 193 560
Tin 17 000 <5000 NA 6512 1 240 2 290 263 1 500
Uranium 30 105 000 134 517 788 600 416 000 578 000 159 000 838 000
Vanadium 60 280 000 348 000 2 208 200 1 200 000 773 000 752 000 2 500 000
Zinc 5 000 13 000 000 NA 642 940 476 000 229 000 171 000 398 000
Volatile Organic Compounds (pg/L)
Acetone 700 35 NA 66 5 110 710 260 80
Benzene 5 <5 NA ND ND <1 <1 <1
2 Butanone (MEK) 4 000 NA NA ND ND 120 65 <20
Carbon Tetrachlonde 5 <5 NA ND ND <1 <1 <1
Chloroform 70 8 NA 6 7 66 16 49 13
Chloromethane 30 NA NA ND 94 11 44 3 6
Dichlormethane
(Methylene Chlonde) 5 11 0 NA ND ND 2 <1 <1
Naphthalene 100 <10000 NA <10 ND 1 1 54 20
Tetrahydrofuran 46 NA NA 150 0 <20 <100 <10 <500
Toluene 1 000 <5 NA ND ND <1 <1 <1
Xylenes (total) 10 000 <5 NA ND ND <1 <1 <1
Radiologics (pCi/L)
Gross Alpha 15|NA <^>365667 '^'29380 ^^'21900 16500±60 11300-H/82 3610+/14 4
'^^Semi Volatile Organic Compounds (pg/L)
Diethyl phthalate NA 170 <10 <10
Bis(2 etylhexvOphthalate <10 27 <10
Others
Lab pH (S U) 6 5 85 07 1 88 08 1 53 1 15 2 73 2 23
TDS (mg/L) NS 120 000 62 000 357 400 131 000 140 000 130 000 216 000
Anions (meq/L) NA 5 430 2 450 4 750
Cations (meq/L) NA 5 660 2 360 4 720
General Inorganics (mg/L)
Carbonate as CO3 NS <5 <1 ND ND <1 <1 <1
Bicarbonate as HCO3 NS <5 NA ND ND <1 <1 <1
Calcium NS 630 307 484 604 635 711 577
Chlonde NS 8 000 6 728 37 340 9 830 20 700 7 440 33 800
Fluonde (mg/L) 4 0 022 3008 31 72 03 04 28 4 69 2
Magnesium NS 7 900 5 988 21 220 6 550 16 200 5410 14 300
Potassium NS NA 647 5 698 1 880 4 140 1 840 4 510
Sodium NS 10 000 8 638 62 600 13 200 39 000 16 700 29 500
Sulfate NS 190 000 63 667 287 600 118 000 232 000 107 000 182 000
1 Only detectable Semi Volatile Organic Compound(s) concentrations listed
2 No error term provieded
NA = Not analyzed
ND = Below laboratory detection limit Note the report did not include the detection limit
NS = No Groundwater Quality Standard
Table 2
Historic Analytical Data for Wasterwater m Celt 2 Slimes Dram
Parameter GWQS Cell 2 LDS Slimes C2
2009 2010 2007 2008 2009 2010 2011
Nutrients (mg/L)
Ammonia (as N) 25 33 07 4 020 3 620 3 240 3 620 2 940
Nitrate & Nitrite (as N) 10 3 2 30 9 20 3 38 126 38
Heavy Metals (pg/L)
Arsenic 50 <5 <5 26 900 19 300 14 200 23 500 17 800
Beryllium 4 <0 5 <0 5 298 245 271 267 231
Cadmium 5 33 1 1 5 500 5 840 5 510 6 370 5 580
Chromium 100 <25 <25 2 750 2 450 2 230 2 510 2 380
Cobalt 730 314 <10 46 500 43 800 38 700 48 200 42 500
Copper 1 300 59 120 106 000 154 000 170 000 148 000 132 000
Iron 11 000 208 37 0 2 770 000 3 310 000 3 230 000 2 720 000 2 960 000
Lead 15 <1 0 <1 0 566 528 403 586 501
Manganese 800 1 810 395 0 117 000 130 000 160 000 144 000 123 000
Mercury 2 <0 5 05 ND ND <5 <4 11 1
Molybdenum 40 21 130 4 080 3190 >5 4 630 3 510
Nickel 100 948 <20 123 000 122 000 2 240 126 000 111 000
Selenium 50 79 94 422 0 647 0 108 000 844 714
Silver 100 <10 <10 ND ND <10 <10 <10
Thallium 2 09 <0 5 361 703 358 470 371
Tin 17 000 <100 <100 ND ND <100 <100 <100
Uranium 30 83 8 79 6 23 000 0 29 200 0 29 900 30 600 27 100
Vanadium 60 22 <15 409 000 463 000 536 000 469 000 454 000
Zinc 5 000 4 220 78 0 767 000 750 000 582 000 652 000 574 000
Volatile Organic Compounds (pg/L)
Acetone 700 <20 <20 550 410 570 460 690
Benzene 5 <1 <1 ND ND <1 <1 <1
2 Butanone (MEK) 4 000 <20 <20 ND ND 100 83 130
Carbon Tetrachlonde 5 <1 <1 ND ND <1 <1 <1
Chloroform 70 <1 <1 20 17 16 15 20
Chloromethane 30 <1 <1 1 8 ND 22 23 2
Dichlormethane
(Methylene Chlonde) 5 <1 <1 ND ND <1 <1 <1
Naphthalene 100 <1 <1 14 75 16 17 13
Tetrahydrofuran 46 <100 6 13 15 ND <100 <10 <10
Toluene 1 000 <1 <1 1 7 ND 26 26 3
Xylenes (total) 10 000 <1 <1 1 5 ND <1 22 <1 0
Radiologics (pCi/L)
Gross Alpha 15| 13 5±1 8 7 3-f-/ 2 6| 1 290| 1 570 1580±18 6 1000-1-/24 6 1230-1-/ 8 4
^^^Semi Volatile Organic Compounds (pg/L)
Phenol 1 NA NA <10 107| <10
Others
Field pH (S U ) 6 5 85 66 7 36 3 18 3 24 3 11 3 39 3 18
TDS (mg/L) NS 6 750 5 210 84 300 74 600 84 100 79 900 80 200
Anions (meq/L) 109 NA NA 1 580 1 430 1 430
Cations (meq/L) 105 NA NA 1 430 1 370 1 380
General Inorganics (mg/L)
Carbonate as CO3 NS <1 <1 ND ND <1 <1 <1
Bicarbonate as HCO3 NS 168 324 ND ND <1 <1 <1
Calcium NS 711 615 572 528 508 496 474
Chlonde NS 1 750 1 360 3 700 3 860 2 750 3 510 3110
Fluonde 4 <0 1 0 4 33 ND <0 1 24 2 1
Magnesium NS 596 454 4 100 4 030 3 750 3 790 3 640
Potassium NS 22 13 636 560 689 620 636
Sodium NS 412 318 4 050 4 600 4410 4 770 4 590
Sulfate NS 2 700 1 780 60 600 74 000 72 200 63 700 64 200
1 Only detectable Semi Volatile Organic Compound(s) concentrations listed
2 No error temn provieded
Shaded = laboratory detection limit exceeds the GWQS
NA = Not analyzed
ND = Below laboratory detection limit Note the report did not include the detection limit
NS = No Groundwater Quality Standard
Table 3
Historic Analytical Data for Wastewater in Cell 3
Parameter GWQS Ceil 3
1987 2003 2007 2008 1 2009 2010 2011
Nutrients (mg/L)
Ammonia (as N) 25 139 1 302 13 867 9010 21 600 2 650 6 470
Nitrate & Nitnte (as N) 10 <100 20 102 44 142 26 261
Heavy Metals (pg/L)
Arsenic 50 163 000 32 867 256 500 489 000 <5 52 900 263 000
Beryllium 4 540 430 913 840 905 206 1 570
Cadmium 5 2 600 2 125 9 260 15 400 <0 5 1 960 12 200
Chromium 100 120 000 3 742 14 883 12 800 <25 3 360 22 800
Cobalt 730 480 000 NA 82 783 57 000 <10 13 000 76 000
Copper 1 300 360 000 87 333 505 000 345 000 <10 89 000 768 000
Iron 11 000 2 100 000 1 278 333 4 874 500 4 400 000 5 970 000 1 460 000 10 200 000
Lead 15 NA 2 507 9 647 16 900 <1 0 17 200 16 700
Manganese 800 820 000 144 000 496 833 313 000 <10 101 000 587 000
Mercury 2 ND NA ND 16 <0 5 <4 30 9
Molybdenum 40 52 000 12 250 122 167 209 000 14 21 300 96 200
Nickel 100 17 000 20 917 131 833 241 000 <20 23 800 75 800
Selenium 50 <2000 910 5 856 10 200 <5 3 080 6 900
Silver 100 <2500 NA 305 1 010 <10 101 792
Thallium 2 NA NA 446 1 200 <0 5 190 518
Tin 17 000 NA NA 1 090 1 070 <100 155 325
Uranium 30 118 000 67 833 332 333 636 000 3 590 180 000 458 000
Vanadium 60 210 000 158 333 935 000 1 130 000 <15 692 000 2 370 000
Zinc 5 000 590 000 NA 748 833 515 000 <10 134 000 726 000
Volatile Organic Compounds (pg/L)
Acetone 700 28 NA 80 100 67 37 330
Benzene 5 <5 NA ND ND <1 <1 <1
2 Butanone (MEK) 4 000 NA NA ND ND <20 <20 67
Carbon Tetrachlonde 5 <5 NA ND ND <1 <1 <1
Chloroform 70 6 NA ND 11 42 26 31
Chloromethane 30 NA NA ND ND 1 4 1 8 35
Dichlormethane (Methylene 5 10 NA ND ND <1 <1 74
Chloride)
Naphthalene 100 <10000 NA ND <10 <1 2 1 1 2
Tetrahydrofuran 46 NA NA 150 <20 <100 <10 <10
Toluene 1 000 <5 NA ND ND <1 <1 <1
Xylenes (total) 10 000 <5 NA ND ND <1 <1 <1
Radiologics (pCi/L)
Gross Alpha 15|NA <^h01417 <^>16533 <^>21700 17000±60 9 4030-1-/ 48 7 11100-H/291
^^^Semi Volatile Organic Compounds (pg/L)
Bis(2 etylhexvOphthalate 1 <10 106 <10
others
Lab pH (S U ) 6 5 85 0 82 2 28 1 6 1 79 1 4 218 1 27
TDS (mg/L) NS 189 000 51 633 228 500 193 000 243 000 56 200 296 000
Anions (meq/L) NA 4 950 944 5 270
Cations (meq/L) NA 5 730 1 050 6 280
General Inorganics (mg/L)
Carbonate as CO3 NS NA <1 ND ND <1 <1 <1
Bicarbonate as HCO3 NS <5 NA ND ND <1 <1 <1
Calcium NS 300 418 887 478 628 560 200
Chlonde NS NA 2 460 15 965 15 400 17 200 3 470 40 400
Fluoride (mg/L) 4 <100 667 42 8 1 4 06 54 8 64 1
Magnesium NS 5 400 3 386 15 767 13 100 17 100 2 500 22 100
Potassium NS NA 254 6 657 4 760 3 820 782 2 590
Sodium NS 5 900 3 198 25 583 22 900 28 600 5 620 47 900
Sulfate NS 180 000 33 400 173 667 167 000 214 000 40 400 197 000
1 Only detectable Semi Volatile Organic Compound(s) concentrations listed
2 No error temn provieded
Shaded = laboratory detection limit exceeds the GWQS
NA - Not analyzed
ND = Below laboratory detection limit Note the report did not include the detection limit
NS = No Groundwater Quality Standard
Table 4
Historic Analytical Data for Wastewater m Cell 4A
Parameter GWQS Cell 4A Cell 4A LDS
2009 2010 2011 2009 2010 2011
Nutrients (mg/L)
Ammonia (as N) 25 3 140 5 230 4 930 4 480 2 290 3 480
Nitrate & Nitnte (as N) 10 28 52 44 69 183 94
Heavy Metals (pg/L)
Arsenic 50 62 600 109 000 86 600 133 000 54 000 74 700
Beryllium 4 296 215 323 536 295 367
Cadmium 5 1 920 3 670 2 190 4 010 2 650 3 160
Chromium 100 3 220 7 500 5 900 9 140 3 890 5 940
Cobalt 730 9 440 26 500 22 500 37 300 15 200 21 700
Copper 1 300 99 200 168 000 181 000 222 000 116 000 150 000
Iron 11 000 2 360 000 2 920 000 3 390 000 3 940 000 1 420 000 2 530 000
Lead 15 5 360 11 800 11 000 5 270 3 400 4 520
Manganese 800 178 000 209 000 131 000 389 000 157 000 207 000
Mercury 2 1 19 <4 15 2 2 66 62 147
Molybdenum 40 24 300 43 800 24 200 49 200 23 900 29 300
Nickel 100 17 100 40 900 43 500 43 900 23 900 29 600
Selenium 50 4 620 5 810 4 460 5 250 2 820 3 780
Silver 100 78 193 216 204 62 127
Thallium 2 162 350 410 252 194 290
Tin 17 000 257 378 319 504 180 119
Uranium 30 118 000 217 000 153 000 284 000 145 000 168 000
Vanadium 60 918 000 1 090 000 730 000 1 150 000 518 000 770 000
Zinc 5 000 142 000 224 000 286 000 298 000 152 000 204 000
Volatile Organic Compounds (pg/L)
Acetone 700 60 55 100 240 130 120
Benzene 5 <1 <1 <1 <1 <1 <1
2 Butanone (MEK) 4 000 <20 <20 <20 78 50 82
Carbon Tetrachlonde 5 <1 <1 <1 <1 <1 <1
Chloroform 70 4 85 10 23 52 26
Chloromethane 30 34 55 79 79 13 38
Dichlormethane (Methylene
Chloride) 5 <1 <1 <1 <1 <1 <1
Naphthalene 100 1 8 <1 <1 <1 <1 <1
Tetrahydrofuran 46 <100 <10 <10 140 158 102
Toluene 1 000 <1 <1 <1 <1 <1 <1
Xylenes (total) 10 000 <1 <1 <1 <1 <1 <1
Radiologics (pCi/L)
Gross Alpha 15 8910±44 3400-f-/ 45 8290+/ 25 2| 7020±39 1 |3230-h/ 43 1 7440-H/ 23 8
^^^Semi Volatile Organic Compounds (pg/L)
Phenol <10 <10 <10 33 23 5 <10
Bis(2 etylhexvOphthalate <10 196 <10 <10 54 9 <10
Others
Lab pH (S U ) 6 5 85 1 4 1 99 1 73 1 98 2 53 2 32
TDS (mg/L) NS 81400 107 000 108 000 117 000 56 900 93 800
Anions (meq/L) 1 540 2 030 5 730 2 140 1 020 1 790
Cations (meq/L) 1 490 2 030 2 010 2 180 1 060 1 740
General Inorganics (mg/L)
Carbonate as CO3 NS <1 <1 <1 <1 <1 <1
Bicarbonate as HCO3 NS <1 <1 <1 <1 <1 <1
Calcium NS 627 598 598 558 474 470
Chlonde NS 4 650 7 350 5 870 7 570 4 670 6 040
Fluonde (mg/L) 4 03 21 6 30 6 07 39 46
Magnesium NS 3 250 4 940 4 720 6 390 3 240 5100
Potassium NS 980 1 440 1 450 1 960 934 1 500
Sodium NS 5 980 11 300 11 400 12 600 6 700 11 000
Sulfate NS 67 600 87 100 267 000 92,400 41 700 77 400
1 Only detectable Semi Volatile Organic Compound(s) concentrations listed
Shaded = laboratory detection limit exceeds the GWQS
NA = Not analyzed
ND = Below laboratory detection limit Note the report did not include the detection limit
Table 5
Historic Analytical Data for Wastewater in Cell 48
Parameter GWQS Cell 48 Cell 48 LDS
2011 2011
Nutrients (mg/L)
Ammonia (as N) 25 5 220 4 260
Nitrate & Nitrite (as N) 10 39 30
Heavy Metals (pg/L)
Arsenic 50 67 400 54 200
Beryllium 4 311 274
Cadmium 5 1 990 1 670
Chromium 100 6 860 6 250
Cobalt 730 17 800 15 600
Copper 1 300 193 000 176 000
Iron 11 000 2 960 000 2 450 000
Lead 15 9 960 6 060
Manganese 800 128 000 118 000
Mercury 2 137 123
Molybdenum 40 21 400 16 700
Nickel 100 33 900 30 700
Selenium 50 4 670 3710
Silver 100 137 111
Thallium 2 237 179
Tin 17 000 196 332
Uranium 30 133 000 111 000
Vanadium 60 660 000 518 000
Zinc 5 000 191 000 172 000
Volatile Organic Compounds (pg/L)
Acetone 700 130 390
Benzene 5 <1 <1
2 Butanone (MEK) 4 000 <20 240
Carbon Tetrachlonde 5 <1 <1
Chloroform 70 94 20
Chloromethane 30 85 11
Dichlormethane (Methylene
Chloride) 5 <1 <1
Naphthalene 100 <1 <1
Tetrahydrofuran 46 <10 198
Toluene 1 000 <1 <1
Xylenes (total) 10 000 <1 <1
Radiologics (pCi/L)
Gross Alpha 15 8590-1-/ 25 616000-)-/ 21 4
'^^Semi Volatile Organic Compounds (pg/L)
Atl concentrations below laboratory detection limits
Others
Lab pH (S U ) 6 5 85 1 87 2 23
TDS (mg/L) NS 93 800 85 800
Anions (meq/L) 3 020 1 350
Cations (meq/L) 1 810 1 500
General Inorganics (mg/L)
Carbonate as CO3 NS <1 <1
Bicarbonate as HCO3 NS <1 <1
Calcium NS 570 486
Chlonde NS 8 290 3 630
Fluonde (mg/L) 4 26 7 28 4
Magnesium NS 3910 3 230
Potassium NS 1 370 1 130
Sodium NS 9 050 8 240
Sulfate NS 134 000 59 900}
1 Only detectable Semi Volatile Organic Compound(s) concentrations listed
Shaded = laboratory detection limit exceeds the GWQS
NA = Not analyzed
ND = Below laboratory detection limit Note the report did not include the detection limit
Table 6
DUSA Sample Duplicates Comparisons
Parameter GWQS Sample Duplicate Comparison of
Cell 4A in 2011
Cell 4A LDS Cell4ABC DUSA
Nutrients (mg/L)
Ammonia (as N) 25 3 480 3 500 06
Nitrate & Nitrite (as N) 10 94 94 00
Heavy iVletais (pg/L)
Arsenic 50 74 700 71 000 5 1
Beryllium 4 367 374 1 9
Cadmium 5 3160 2 860 10 0
Chromium 100 5 940 5 720 38
Cobalt 730 21 700 19 600 10 2
Copper 1 300 150 000 143 000 48
Iron 11 000 2 530 000 2 450 000 32
Lead 15 4 520 4 110 95
Manganese 800 207 000 188 000 96
Mercury 2 147 12 10 194
Molybdenum 40 29 300 26100 11 6
Nickel 100 29 600 28 800 27
Selenium 50 3 780 3 680 27
Silver 100 127 114 108
Thallium 2 290 260 109
Tin 17 000 119 118 08
Uranium 30 168 000 150 000 11 3
Vanadium 60 770 000 740 000 40
Zinc 5 000 204 000 198 000 30
Volatile Organic Compounds (pg/L)
Acetone 700 120 150 22 2
Benzene 5 <1 <1 DNC
2 Butanone (MEK) 4 000 82 100 19 8
Carbon Tetrachloride 5 <1 <1 DNC
Cfiloroform 70 26 33 23 7
Chloromethane 30 38 45 169
Dichlormethane (Methylene 5 DNC
Chlonde)
Naphthalene 100
<1
<1
<1
<1 DNC
Tetrahydrofuran 46 102 99 4 26
Toluene 1 000 <1 <1 DNC
Xylenes (total) 10 000 <1 <1 DNC
Radiologics (pCi/L)
Gross Alpha (RPD) 15|7440+/23 8 7420-1-/ 23 8 06
^^^Semi Volatile Organic Compounds (pg/L)
All concentrations below laboratory detection limits
Others
Lab pH (8 U ) 6 5 85 2 32 2 33 04
TDS (mg/L) NS 93 800 93 800 00
Anions (meq/L) 1 790 1 640 87
Cations (meq/L) 1 740 1 730 06
Genera! Inorganics (mg/L)
Carbonate as CO3 NS <1 <1 DNC
Bicarbonate as HCO3 NS <1 <1 DNC
Calcium NS 470 470 00
Chloride NS 6 040 5 520 90
Fluoride (mg/L) 4 46 46 00
Magnesium NS 5 100 4 940 32
Potassium NS 1 500 1 470 20
Sodium NS 11 000 11 000 00
Sulfate NS 77 400 70 800 89
Shaded where RPD compar sons exceeded 20 / or rad ologic compar son e ceeded 2
DNC = Did not compare because at lest one concentrat on was below detect on limits
NC - No RPD calculated
1 Only detectable concentrations are listed
2 The equation used for rad ologics comparisons n section 9 1 4(c) of the QAP
3 Laboratory detection limit exceeds the GWQS
4 DUSA did not use the equations in section 9 1 4(c) of the QAP
5 used the al e of the number w th the less than sign ( ) to calculate RPD
Table 6
DUSA Sample Duplicates Comparisons
Parameter GWQS Sample Duplicate Comparison of
Cell 4A in 2011
Ceil 4A LDS Cell 4A BC DUSA
Nutrients (mg/L)
Ammonia (as N) 25 3 480 3 500 -06
Nitrate & Nitrite (as N) 10 94 94 00
Heavy IVIetais (pg/L)
Arsenic 50 74 700 71 000 5 1
Beryllium 4 367 374 1 9
Cadmium 5 3 160 2 860 100
Chromium 100 5 940 5 720 38
Cobalt 730 21 700 19 600 10 2
Copper 1 300 150 000 143 000 48
Iron 11 000 2 530 000 2 450 000 32
Lead 15 4 520 4 110 95
Manganese 800 207 000 188 000 96
Mercury 2 14 7 12 10 194
Molybdenum 40 29 300 26 100 11 6
Nickel 100 29 600 28 800 27
Selenium 50 3 780 3 680 27
Silver 100 127 114 10 8
Thallium 2 290 260 10 9
Tin 17 000 119 118 08
Uranium 30 168 000 150 000 11 3
Vanadium 60 770 000 740 000 40
Zinc 5 000 204 000 198 000 30
Volatile Organic Compounds (pg/L)
Acetone 700 120 150 22 2
Benzene 5 <1 <1 DNC
2 Butanone (MEK) 4 000 82 100 198
Carbon Tetrachloride 5 <1 <1 DNC
Chloroform 70 26 33 23 7
Chloromethane 30 38 45 169
Dichlormethane (Methylene 5 DNC
Chlonde)
Naphthalene 100
<1
<1
<1
<1 DNC
Tetrahydrofuran 46 102 99 4 26
Toluene 1 000 <1 <1 DNC
Xylenes (total) 10 000 <1 <1 DNC
Radiologics (pCi/L)
Gross Alpha (RPD) 1517440+/23 8 7420+/ 23 8| 06
'^'Semi Volatile Organic Compounds (pg/L)
All concentrations below laboratory detection limits
Others
Lab pH (S U ) 6 585 2 32 2 33 -04
TDS (mg/L) NS 93 800 93 800 00
Anions (meq/L) 1 790 1 640 87
Cations (meq/L) 1 740 1 730 06
General Inorganics (mg/L)
Carbonate as CO3 NS <1 <1 DNC
Bicarbonate as HCO3 NS <1 <1 DNC
Calcium NS 470 470 00
Chloride NS 6 040 5 520 90
Fluonde (mg/L) 4 46 46 00
Magnesium NS 5 100 4 940 32
Potassium NS 1 500 1 470 20
Sodium NS 11 000 11 000 00
Sulfate NS 77 400 70 800 89
Shaded where RPD compansons exceeded 20 / or radiologic companson exceeded 2
DNC Did not compare because at lest one concentrat on was below detection lim ts
NC No RPD calculated
1 Only detectable concentrat ons are listed
2 The equation used for radiologics compansons in section 9 1 4(c) ofthe QAP
3 Laboratory detection I mit exceeds the GWQS
4 DUSA did not use the equations n section 9 1 4(c) ofthe QAP
5 used the value of the number with the less than sign ( ) to calculate RPD
Table 7
DRC Sample Duplicates Comparisons 2011
Parameter GWQS Sample Comparison Between Tailing Ceil 3
and Its Duplicate Identifiied as Tailing Cell 6
in 2009
Sample Comparison Between DRC Tailing Cell 3 and
DUSA Tailing Cell 3 in 2009
Tailing Cell 3 | Tailing Cell 6 RPD DRC Tailing Cell 3 | DUSA Tailing Cell 3 | RPD
Nutrients (mg/L)
/Ammonia (as N)
Nitrate & Nitrite (as N)
599
260
574
252
Heavy Metals (pg/L)
Arsenic
Beryllium
Cadmium
Chromium
Cobalt
Copper
Iron
Lead
Manganese
Mercury
Molybdenum
Nickel
Selenium
Silver
Thallium
Tin
Uranium
Vanadium
Zinc
50
4
5
100
730
1 300
11 000
15
800
2
40
100
50
100
2
17 000
30
60
5 000
313 000
2 050
18 300
21 900
90 500
817 000
10 200 000
20 800
759 000
156
109 000
66 100
8 890
1 280
386
602
506 000
2 900 000
833 000
304 000
2 010
17 900
21 600
88 500
799 000
9 920 000
20 000
736 000
157
106 600
64 000
8 830
1 320
506
589
492 000
2 820 000
813 000
29
20
22
1 4
22
22
28
39
3 1
-06
22
32
07
3 1
26 9
22
28
28
24
313 000
2 050
263 000
1 570
174
26 5
21 900
90 500
817 000
10 200 000
20 800
759 000
22 800 -40
76 000 174
768 000 62
10 200 000 00
16 700 21 9
587 000 25 6
109 000
66 100
8 890
1 280
386
506 000
2 900 000
833 000
96 200 125
75 800 137
6 900 25 2
792 47 1
518 29 2
458 000
2 370 000
726 000
10 0
20 1
13 7
Volatile Organic Compounds (pg/L)
Acetone 700 74 6 67 107
Benzene 5 <5 <5 DNC <5 <1 DNC
2 Butanone (MEK) 4 000 25 104 82 5 25 67 DNC
Carbon Tetrachloride 5 <5 <5 DNC <5 <1 DNC
Chloroform 70 153 158 32
Chloromethane 30 <5 <5 SVALUE' <5 35 #VALUE'
Dichlormethane (Methylene 5 74
Chloride) 5 43 5 76 59 5 43 DNC
Naphthalene 100 <5 <5 #yALUEt <5 1 2 # VALUE'
Tetrahydrofuran 46 <5 <5 DNC <5 <10 DNC
Toluene 1 000 <5 <5 DNC <5 <1 DNC
Xylenes (total) 10 000 <5 <5 DNC <5 <1 DNC
Radiologics (pCi/L)
(2) Gross Alpha 15 #DIV/0' 11100+/291
^^'Semi Volatile Organic Compounds (pg/L)
Bis(2 ethylhexy)phthalate NS |<10 6 21 DNC <10 <10
Others
Lab pH (S U ) 6 5 85 1 23 1 29 -4 8| 1 23 1 27 32
TDS (mg/L) NS 452 000 442 000 22
General inorganics (mg/L) I
Carbonate as CO3 NS <0 5 <1 0 DNC <0 5 <1 DNC
Bicarbonate as HCO3 NS <0 5 <1 0 DNC <0 5 <1 DNC
Calcium NS 397 379 46
Chloride NS 37 500 36 800 1 9 37 500 40 400 74]
Fluonde (mg/L) 4 6590 6480 1 7
Magnesium NS 18 600 18 100 27 18 600 22 100 172
Potassium NS 1 770 1 740 1 7
Sodium NS 40 700 39 500 30 40 700 47 900 16 3
Sulfate NS 247 000 320 000 25 7 247 000 197 000 22 5
Shaded where RPD compansons exceeded 20 / or radiologic companson exceeded
DNC Did not compare because at lest one concentration was below detection limits
NC No RPD calculated
1 Only detectable concentrat ons are listed
2 The equation used fbr radiologics compansons n sect on 9 1 4(c) ofthe QAP
3 Laboratory detection lim t exceeds the GWQS
4 DUSA d d not use the equat ons in section 9 1 4(c) of the QAP