CAMECO RESOURCES CROW BUTTE OPERATION

86 Crow Butte Road P.O. Box 169 Crawford, Nebraska 69339-0169

May 6, 2019

USPS PRIORITY MAIL SIGNATlJRE CO:I\1FIRMATION

ATTN: Document Control Desk, Director Office of Nuclear Material Safety and Safeguards U.S. Nuclear Regulatory Commission Washington, DC 20555-0001

Subject: Source Materials License SUA-1534 Docket No. 40-8943 Monitor Well Excursion- SM6-28

Attn: Document Control Desk:

(308) 665-2215 (308) 665-2341 - FAX

On May 2, 2019, during routine biweekly water sampling of Cameco Resources, Crow Butte Operation (CBO) shallow monitor well SM6-28, the multiple parameter upper control limits (MCL) for alkalinity and conductivity were exceeded. As required by License Condition 11.5 of Source Materials License SUA-1534, a second sample was collected within 24 hours and analyzed for the three excursion indicator parameters. The results of the second sample exceeded the MCL for alkalinity and conductivity.

CBO notified Mr. Ron Burrows of the excursion by voicemail on May 3, 2019, as required in License Conditions 11.5 and 11.6. Laboratory results for the sample analysis for SM6-28 are attached. In addition, graphs are attached for the three excursion indicator parameters and water levels that cover the period from August 23, 2018 through May 3, 2019.

The region around the CBO facility was subjectto a major winter storm on March 14 and 15, 2019, in which the site received an estimated 18" of snowfall accompanied by up to 90 mph wind gusts. As a result, a significant amount of snowmelt impacted the area around the well. This was followed by a second significant winter storm on April 10 and 11, 2019. The snowmelt from this storm provided additional impact to this part of the well field. Wet conditions have persisted since that time, and the site believes that these conditions are the cause of this excursion. This well was placed on excursion status in 2000, 2005, 2010, 2011, 2015, and 2016 during similar wet spring conditions.

CAMECO RESOURCES CROW BUTTE OPERATION

Document Control Desk Director May 6, 2019 Page2

In accordance with License Condition 11.5, CBO has increased the sampling frequency for SM6-28 to weekly until three consecutive weekly samples are below the exceeded UCLs. CBO will continue weekly sampling for an additional three weeks after this goal has been achieved as required by CBO's NDEQ Class III UIC Permit requirements. If the well has not exceeded the UCLs after these samples, it will be returned to normal status.

If you have any questions or require any further information, please do not hesitate to call me at (308) 665-2215 ext 117.

Sincerely, CAMECO RESOURCES CROW BUTTEOPERATION

Walt Nelson SHEQ Coordinator

Enclosures: As Stated

cc: NRC - Deputy Director CBO-File

ec: CR - Electronic File

/

~«· Canieoo

Sample Date: 05/02/2019

Analysis Date: 05/02/2019

Crow Butte Project

Monitor Well Laboratory Report

4J--0

Alkalinity I Conductivity · I Chloride Well ID I (mg/L) Alk SCL Alk MCL (µMho/cm) Cond SCL Cond MCL (mg/L) CI SCL CI MCL

____ CM0.6_-.0_25 ___ ______ JO='- _______ !l'.13 ________ -3.61 _ _ _ _ _ ___ 1904. ______ .. 29_5.2 _______ 24@_ _ _ _ _ __ 18='- ______ 317 _____ .. 2fi4 ___ _ _ _ _ _ CM0.6.-ft26 ________ .303 __ .. ____ :-1-48 ________ _3_73 _ _ _ _ _ ___ 1897 _________ 29_5.2 ____ . __ 2460_ _ _ _ _ _ .187 _______ 3_3_8. ____ . _ 2_8_2- ___ _ _ . _. CM0.6.-ft28 _____ -~ __ 318 ____ . ___ 442. ____ . __ _3_74 __ . _ . __ .1837 _________ 2_894 ______ . 2412 _____ __ 17.5 _______ JQ7 ____ . __ 25_6 ___ _ __ _ _ CM0.6.-.0.29 _______ __ 310 __ ______ 448 ________ _3_73_. ___ . __ .1896_. _· ______ 30.24 ______ .2520 ______ _ 182. ______ 3-21 _______ 29_8 ___ _

_ _ _ _ CM0_6::ft30 ________ _ 3 l.6 ________ 459 ________ -3.83 __ : _ _ ___ J85='. _____ . __ 29.5.2. __ . ___ 2460_ _ _ _ _ _ .179 ___ . ___ 3.28. ______ 2-14 ___ _ __ _ _ CM0.6.-ftJL _______ .318 __ ..... _ 464 ... ______ _3_86 ________ J87='. ______ .. 2K51 _______ _2376 _____ __ l8l ______ 3_Ql_ ______ 25_1 ____ _ _ _ _ _ CM0.6.-ftJ2 ________ _ 31.5 ________ 461 _________ 3_84 _ _ _ _ _ ___ .1890. ________ 29_8 l ________ 2484. _ _ _ _ __ 183 _______ 25~2, __ : ___ 244 ___ _ . -_. CM0_8_-_Q27 _______ __ 317 ________ 475 ________ _3_26 ________ .1844 .. _______ 2794 _______ _232s_ _____ _ 177 _______ 314 _______ 2~2- __ _ _ _ _ . CMOft-_028 _________ 318. _______ 48Q _________ 4QO_ _ _ _ _ ___ .1849 _________ 26_5.Q _: _____ 220-8_ _ _ _ _: _ 177 _____ . _ 2fi4 _______ 22_Q ___ _ _ _ _ _ .SM06:-02-J ________ .26.7.. _ \- ___ 3J.4 _______ .162 _________ 5_8.l ________ .. 691- ________ .5_76 _ _ _ _ _ __ 8_.l ______ . -23 ________ J 9 ____ _ _ ____ SM06:-02-4 ___ ____ __ 24.4_ _______ 3_1_0 _________ 258 ________ _ 55-2 _________ .672 ______ ___ .5_@ ___ ____ 8,2 __ ______ 24 ________ _20 ____ _

, _ . _ SM06:-02-S. _______ _ 217_ _______ 3-24 ________ .270. ___ ... _ ·_ 5.6_8 __ ... _. _. _696 ___ . _____ .5_80 __ .. ___ J4 ________ 24 _________ 20 ____ _ _ ... SM06:-02_6 ________ _ 20.6 ________ 3_Q8 ________ _257 __ . ___ .. __ 41~ _____ .. ___ .726. ________ 6_Q5 _ _ _ _ _ __ 8,3 _______ _24 _________ 20 ____ _ _ _ __ SM06:-02_1 ________ .238 ________ 3_1_7 __ , _____ -264 _________ 52_4 __________ 677 _________ 5_64 _______ 7,6 _______ ,23 _________ 20 ____ _ _ . _. SM06:-02_8 _________ 318 ________ .3_51. _______ _z93 ____ . ___ .TJ_~ __________ 778 ______ . __ .6_48 _______ _12 ________ 24 ________ _20 ____ _ _ : __ SM08:-02-6 ________ _ 231_ _______ .3_1_7 ________ .264. _ .. _____ 58.~ _. _. ______ 720 _________ .6_QQ _______ _ 9 _________ 24 ________ 20 __ . __

. ___ SM08:-02_'Z ________ _ 239. _______ _3_53 ________ -294. _ . _ _ . ___ 52_6 ____ . _ . _ . _ 706 _________ 5_88 _ _ _ _ _ __ 7, l_ _______ 22 _________ l 9 ____ _ _ _ _ . SM08:-02-9. _______ .26_1_ _______ 3_38 _. ______ .282. __ . ___ . _ 65-6 ____ . ____ .763 _________ .6_36 _ _ _ _ _ __ 12 ________ 26 ___ . ____ _22 ____ _ _ _ . _ SM08:-03_Q ________ _ 201 __ _____ JJH _________ 236 _____ . ___ 412 ____ . ____ .672 _________ 5JiQ _______ 8,1__ ______ 38 _________ 32 ____ _ _ _ . _ SM08:-03J ____ . _____ 23.5 __ ______ 3-50 _______ . _29-2 .. ___ .. __ 52_Q _. _· ______ .750_. _______ 6_25 _____ __ 6,7 ___ ____ .28 _________ 23 ____ _ _ _ . _ SMll:-0_1_6 ________ _ 14.4_ ____ ___ 2_1_3 ________ _1_78_. ____ . _ .3.0} .. _. __ . __ .461 ______ . __ 3_84 _____ __ 2,6 ___ _____ 23 ________ _19 ____ _ _ _ _ _ .SMll:-Ol'Z _____ ___ .HL __ . ___ 2J_Q ________ _1_75 _______ __ 29_4 __ . ___ . __ .432 .. _______ 3JiQ _____ __ 2,7 ________ 21.. ______ _17_. __ _

_ _ _ _ SMll:-018 _________ 139_ -_ . _ -. _ 2.07 ___ .. ____ .l 73 _ . _ _ _ ___ . 3.0_6 ____ .. __ . .4 7 5 . .. ____ . _ 3-~6 _ _ _ _ . __ ='-·5 ________ 28 ________ .23 ____ _ _ _ _ _ SMll:-019 _________ 14_1_ _______ 2.04 ________ .l 70. _______ . 312 ____ .. _. __ 533 _________ ~-44 _ _ _ _ _ __ 1,2 ________ 35 _________ 29. ___ _

.. ___ .SMll:-02.Q _. _____ 1

_162_ ____ ~- _2-3.5 ________ _1_26 ____ ____ AO.~ ... ______ _ 590 _______ --~_n ______ .6,2 ____ ____ 23 ________ _19 ____ _ _ _ _ _ SMll:-021 _________ 166 ______ .. 2.88 ________ .240. ____ . __ A.6JL ________ .773 _________ 6_44 _______ 7,6 _______ .32 ________ _27 ____ _ _ .. _ SMll:-02-J ______ ___ 170 ___ _____ 2.46 _________ 2-Q5 ___ . ____ _ 38.S. _________ 662 _____ . ___ 5-52 ______ _ 3_,9 ______ , _32 _________ 27. ___ _ . ___ SMll:-02-4 _____ : __ .150 ________ 2-3.3 ________ _1_94 ___ . _____ 3.6.~ _. ________ 619 _________ 5J6 _ _ _ _ _ __ ='A- ______ .26. _______ 2L ___ _

. ___ SMll:-02-5 ________ _ 149 __ ______ 2-3.5. _______ _1_9-6_. ___ . __ _ 344 ________ . _590 _________ ~_n __ ___ __ l,8 ____ ____ 21_ ________ 18 ____ _ _ .. .. SMll:-02_6 _________ 142- _______ 2_28 ________ _1_20 _ _ _ _ . _. __ 315 __ . ______ .54 7 .. _______ ~-5.6 _ _ _ _ _ __ l,9 _______ .22 ________ J 8 ____ _

• I

Thursday, May 02, 2019 Page 1 of 1

Sample Date: 05/03/2019

Analysis Date: 05/02/2019

Crow Butte Project

Monitor Well Laboratory Report

Alkalinity Well ID (mg/L) Alk SCL Alk MCL

Conductivity Chloride (µMho/cm) Cond SCL Cond MCL (mg/L) Cl SCL · Cl MCL

_ _ _ _ SM06:-0l.3 _________ 270 ________ .3_1_4 _________ 262 ___ _ _ .. __ 5.fU _ . ________ 69 L ________ S_7_ 6 _ _ _ _ _ __ 8~6- _______ 23 _________ l 9 ____ _

.... SM06:-0l.8 _________ 311 _______ J~l- _______ 193 ___ _ _ ____ 7.3_8 _. ____ .. __ 778 _________ M8 _ _ _ _ _ __ _1_2 _______ _ 24 _________ 20 ____ _

Friday, May 03, 2019 Page 1 of 1

SMG-28 5/6/2019

400

350

300

250

200

150

100

50

Alkalinity

351 351 351 351 351 351 351 351 351 351 351 351 351 351 351 351 351 351 351 351 • • • • • • • • • • • • • • • • • • • • 318 317 ~,,T$~1,,1,, 3r,,~e,~ 3

o ....._ _____________ ________________ _

24

20

16

12

8

4

24 24 24 24 24 24 24 • • • • • • • 24 24 24 24 24 24 24 24 24 • • • • • • • • • 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 • • • • • • • • • • • • • • • • • • • •

12 12 12 12 12 12 11 11 11 11 11 11 11

O'--------------------------------

• Alka linity

... AlkMCL

... Alk SCL

• chloride

..... CIMCL

.... CI SCL

Page 1 of 2

SMG-28 5/6/2019

800

700

600

500

400

300

200

100

0

14

12 ~

10

8

6

4

2

778 778 778 • • •

Conductivity 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 • • • • • • • • • • • • • • • 7~9 7~8

Water Level

• conductivity

• cond MCL

• cond SCL

• water Level -e-Avg Water Level

0---------------------------------

Page 2 of 2

CAMECO RESOURCES CROW BUTTE OPERATION

86 Crow Butte Road P.O. Box 169 Crawford, Nebraska 69339-0169

May 6, 2019

USPS PRIORITY MAIL SIGNATURE CONFIRMATION

ATTN: Document Control Desk, Director Office of Nuclear Material Safety and Safeguards U.S. Nuclear Regulatory Commission Washington, DC 20555-0001

Subject: Source Materials License SUA-1534 Docket No. 40-8943 Monitor Well Excursion - SM6-23

Attn: Document Control Desk:

(308) 665-2215 (308) 665-2341-FAX

On May 2, 2019, during routine biweekly water sampling of Cameco Resources, Crow Butte Operation (CBO) shallow monitor well SM6-23, the multiple parameter upper control limits (MCL) for alkalinity and conductivity were exceeded. As required by License Condition 11.5 of Source Materials License SUA-1534, a second sample was collected within 24 hours and analyzed for the three excursion indicator parameters. The results of the second sample exceeded the MCL for alkalinity and conductivity.

CBO notified Mr. Ron Burrows of the excursion by voicemail on May 3, 2019, as required in License Conditions 11.5 and 11.6. Laboratory results for the sample analysis for SM6-23 are attached. In addition, graphs are attached for the three excursion indicator parameters and water levels that cover the period from August 23, 2018 through May 3, 2019.

The region around the CBO facility was subject to a major winter storm on March 14 and 15, 2019, in which the site received an estimated 18" of snowfall accompanied by up to 90 mph wind gusts. As a result, a significant amount of snowmelt impacted the area around the well. This was followed by a second significant winter storm on April 10 and 11, 2019. The snowmelt from this storm provided additional impact to this part of the well field. Wet conditions have persisted since that time, and the site believes that these conditions are the cause of this excursion. This well was placed on excursion status in 2010, 2015, and 2016 during similar wet spring conditions.

CAMECO RESOURCES CROW BUTTE OPERATION

Document Control Desk Director May 6, 2019 Page2

In accordance with License Condition 11.5, CBO has increased the sampling frequency for SM6-23 to weekly until three consecutive weekly samples are below the exceeded UCLs. CBO will continue weekly sampling for an additional three weeks after this goal has been achieved as required by CBO' s NDEQ Class III UIC Permit requirements. If the well has not exceeded the UCLs after these samples, it will be returned to normal status.

If you have any questions or require any further information, please do not hesitate to call me at (308) 665-2215 ext 117.

Sincerely, CAMECO RESOURCES CROW BUTTE OPERATION

Walt Nelson SHEQ Coordinator

Enclosures: As Stated

cc: NRC - Deputy Director CBO - File

ec: CR - Electronic File

/

~,­Cameco

Sample Date: 05/02/201 9

Analysis Date: 05/02/2019

Crow Butte Project

Monitor Well Laboratory Report

4J--0

Alkalinity I Conductivity I Chloride Well ID I (mg/L) Alk SCL Alk MCL (µMho/cm) Cond SCL Cond MCL (mg/L) Cl SC:L __ _£1 MCL

.... CMO!i-.Q25 ... .. .... 30=' ........ 413 . _ ...... J6 l . _ _ _ _. __ .l90=' ....... . . 29.52 . .. _ ... .2460 .. _. . . . 18=' ...... _ 317 .... __ . Ui4 ... .

. __ . CMO!i-.Q26 .... _ .. _ .303 ....... _ ~-48 ......... 3.73 .... ..... .1897 ....... . . 29.52 _ ....... 2460.... . . . 187 ...... _ 33-8 . _ ..... 2_8.2 _ .. .

. . . . CMO!i-.Q28 ..... ... . 318 .. ...... 449 _ ....... J74 ......... .1837 ... . .. .. . 2.8.~4 __ ..... .2412 ..... .. 17.5 ....... 3-Q7 ... -· .. 2.5.6 ... .

. . . . CMO!i-j).29 . . ..... .. 31.0 ........ 448 . __ .. _ .. J73 . _.. . . . _ .1896 . .... . .. . 30.24 _ ...... .2520.... . . . 182- .. _ ... 3.21 .. ..... 2fi8 _. _ .

. . . . CMO!i-ft30. _ . ___ .. . 3 Hi_ ... .. _ . 459 .... _ ... J83 . _ . _ . _ .. . 1854. _. _ .. . .. 29.52 . _ .. ___ .2460.... . . . 179 .. ..... 32.8 .... _ .. 2_7_4 ... .

. . . _ CM0.6_-_Q31- .. _ .. __ .318 ... _. _. _ 464 ...... . . J86 . . . _ .. . . .18H ... _ . ... _2_8_51 ....... .2376 .. _ .. _ .181 ...... 3-Ql ....... 2.5.1 .. _.

. . . CMO!i-.Q3Z .. __ ... _ .3 l.5 ........ 461 .... . ... J84 _ _ _ _ .. __ J.890. _. _ ..... 29.81 ........ 248~.... _ . . 183 .... . .. 2.9-2 ....... 244 ... .

. . . . CM0_8-.Ql7 ........ . 317 ........ 475 ........ .396 __ .. ..... J.84=' ......... 279-4 .. ___ ... 232$... . . .. 177 .... _ .. 3J4 ....... 2fi2 ... .

. . . _ CM08.-.Q28 .. ...... . 318 . ....... 480 .. .. .... -400. _ . . . . . . . 1849. _. _ .. _ .. 26_50 .: . _ .... 220$.. . . . . . 177 ..... __ 2_6.4 ...... _ 22_Q ... .

SM~ Ql_J)_ ..... _ . . 267 ...... . . 3J-4 . __ . ... _ .262. __ . .. _ . .5.8.l . _ ... .. . .. 691. ........ .5-'z6 .... . .. 8,L _ .... . 23. _ ...... -19. _ . . . . . . . SM06:-0.2.4 _ .. . .. ... HA ....... 3.1_0 . . .... . _ .258 .. __ . .. _ . .SS.2 __ .. ... __ .672 ... __ . ... .5.<iO .. ·- . _. 8,2 .... . .. . 24. _. _ .... -20. _ .. . , ... SM06:-0.2.5 ... .. . ... 217 ........ 3.24 .. .. .... .270 .... .. . ... .5.6.8 ... . .. .. . . 696 ... _ . .... .5.80 _ ...... J.4 ....... . 24 ......... 20 . . .. . . . __ SM06:-0l6 ... ..... . 20.6 . . ..... . 3.08 .. . ____ . .257. _ . . . .... 47.9 ___ _ . . . . .726. __ .. _ ... 6.05 .. . . . .. 8,3 . ... .... 24 ........ -20 .. . . .

. _ .. SM06:-0l.'Z ... __ ··- .238 .. _. _ .. _ 3.17 ..... .. . .264_ . _ __ . .. .52.4 . . . ___ ... 677 ..... --·- 5Ji4 ....... 7,6 .. _. __ . . 23 ......... 20 .... .

. . . . SM06:-0.2.8 _. _. _. __ .318 ... . . _. _ 3.51 . . ... _ . . . 293 __ .. . . _. TJ.9 _. ___ ___ .. 778 . . ....... M8 _ .. _ ... . U ....... . 24. _ ....... 20 .. . __

. __ . SM08:-0.2.<i ... ..... . 23L _ .. .. _ 3J7 . .. . . __ . .264 .. . .... . .58.9 . __ . _ .720 .. _ .. . . _. 6_QO . _ ..... . 9 . ........ 24 ......... 20 .... .

. . __ SM08:-0.2-'Z ... ... . . . 239 ... .. _ .. 3.53 . ___ .. _ . .294 .... .. .. . . .52-6 __ . . .. _ . .706 .... _ .. . . 5.88 ... .. .. 7,L .. .... 22 ...... . . -19 .... .

. . _ SM08:-0.2.9 ........ . 26.L .. . .. _ 3.18 . .... _ . . .282. _. _ .. _. 6_5_6 _ .. ... . 763. _ ... _ . . . .6.36 . .. _ ... . U . . . .. _ .. 26 ....... _.22 .. _ ..

. . . SM08:-03.0 ... _ .. __ .207. ___ .. __ 2.84 .. .. ... . . 236 .... ..... 4.n .. .... ... . 672 . ........ 5.60 ..... __ 8,l. .. .... _38 ..... _ .. -32. _ .. .

. . . . SM08:-03J ........ . 23.5 .... . . __ .3.50 ....... . .222 . _ .. __ . _52_Q __ . __ ... 750 . . . __ . ... 6.25 . _____ . 6,7 ___ . _ ... 28 ..... __ .. 23 . . __ _

.... SMll:-Ol<i _. __ ._._. HA _._ . .. _ 2-1.3 .. . .. . _. J.78 _ . _ ___ . _ 30.3 ___ .. _ .. _ .461. __ ____ . _ 3.84 . ___ __ . 2 .. 6. _. ___ .. 23. _ .. _. _. -19. _. __

. _ . . SMll:-Ol'Z _. _. _ .... Hl ... _ .. _ 2.lO . ____ __ . .1.75 . _. _ . . . . 29-4 __ .. ... . 432 __ . _. _ ... 3.60 . _ _ _ _ _. 2, 7 __ ______ 21.. _______ l 7 ___ . _

. . .. SM1l:-Ol8 ... _____ _ 139 ..... __ . 2.07 . __ __ ... .l73 .. ...... . 30.6 ___ . . . . .475 ...... ___ 3.~6 . ___ --- =',S .. ____ _ .28 ... ... ... 23 .. __ _ _ ___ SMll:-Ol9 _. ___ _ . .. Hl _. _____ 2.04 . __ _ . . .. .l70. ___ ___ . . 3.l2 ___ __ __ . _ .533. _ ...... _ 4.44 . ___ ... l ,2 ..... __ .35. --·· .... 29. _ .. .

__ SMll:-0.2_0 ..... _ T l62 ... ___ . . 2J5 . . .. .. . _ .l96 _____ ___ .40.9 .. __ _ .. 590 _______ __ 49-2 . ___ . _. 6_.2 ___ . ... _23. ________ 19 ____ _ _ . __ SMll:-02_2 _. _. _. __ .16.6 ___ . _ .. _ 2_88 . . _ . . .. . .240. ____ . _. _ 4.6.0 . _. __ . __ .773.. _ .. ____ 6.44 _______ 7,6 ______ .. 32_. ______ _27_. _. _

. . . . SMll:-0.2.3 ____ . ___ .170 ..... .. _ 2-46 . ... .. . . .205 _. _ _ ... . 38.5 __ . ____ .. . 662 ... __ . ... 5.52 .. ____ _ 3,9 _______ .32 ___ .... __ 27_ . .. .

. . . _ SMll:-0.2.4 ..... ... . 150 ...... __ 2J3 .. . . . . . .1.94 . _. _ . __ . . 36_9 ___ _ . __ ... 619 .... . _ ... 5.l6 .. _ _ . _. ='A .. _ .. __ .26 _____ . __ .21 . ___ .

. . __ SMll:-0.2.5 .. _ .... __ 149_ .. . ____ 2J5 . . . ... . . .1.96. ___ ..... 3.4.4. _ . .. . .. . 590. __ ...... 4.n ....... l,8 ........ 21. ....... .l8 . . .. .

. . . . SMll:-0.2.<i ......... H2 ....... . 2.28 . __ .. __ .l.90 . . _ ...... 3.lS ___ .. . _ 547. ___ . . . __ 4.56 ______ . l,9 __ ____ . _22 __ --·· __ .18 __ __ _

Thursday. May 02, 20 19 Page 1 of 1

Sample Date: 05/03/20 19

Analysis Date: 05/02/2019

Crow Butte Project

Monitor Well Laboratory Report

Alkalinity Conductivity Chloride Well ID (mg/L) Alk SCL Alk MCL (µMho/cm) Cond SCL Cond MCL (mg/L) Cl SCL Cl MCL

SM06-023 ... . .... 27.Q . .. .... J l4 . . .... . .. 262.. . . . ... . S.Sl .. ... . ... . 69 J .... . ... . .5.16. . .. . .. 8,6. __ . ___ .23.. .... . . .1 9 .... .

. . . . SMOfH).2.8 . . ....... 3l7. ... .. .. 3.51 .... ..... 293 ... . ... . . 7,3_8 . ........ 778 ... . . .... Ji.48 . . ...... U .... .. . . 24 . ........ 20 .... .

Friday. May 03, 2019 Page 1 of 1

SMG-23 5/6/2019

350

300

250

200

150

100

50

Alkalinity

314 314 314 314 314 314 314 314 314 314 314 314 314 314 314 314 314 314 314 314 • • • • • • • • • • • • • • • • • • • •

O'--------------------------------

Chloride 24 23 23 ~ 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 • • • • • • • • • • • • • • • • • • • 20 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19

• • • • • • • • • • • • • • • • • • • • 16

12

7 8 8 9

8 7 7 7 7 7 7 7 8 8 8 8 i 8 8 ~ • ~. • • • • • • • • • • • • 4

0 ~~~~~~~~~~~~~~~~~~~~ ~ ro> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ rt,() ~ rt,() ~ ro> ~ ro> ro>

~fl) ~ \ ~fl) ~fl) ~~ ~~ ~fl) ~fl) ~fl) f8-'l) ~fl) ~~rt-\ n>~ ~ \ ~fl) ~ ~~ n> ~ ~~~~~~~~~~~~ ~~~~~~~

"' """"

• Alkalinity

.... AlkMCL

... AlkSCL

• chloride

.... CIMCL

.. Cl SCL

Page 1 of 2

SM6-23 5/6/2019

700

600

500

400

300

200

100

Conductivity 691 691 691 691 691 691 691 691 691 691 691 691 691 691 691 691 691 691 691 691 • • • • • • • • • • • • • • • • • • • •

0----------------------------------

7

6

5 5 •

4

3

2

7 7 Water Level

2 2 2

0---------------------------------

• Conductivil)(

• cond MCL

• cond SCL

• Water Level

.... Avg Water Level

Page 2 of 2