# SDM S 

# I 

# I I I I I I I 

# I I I 

# I I I 

# I I I Midval e Sla g Superfun d Sit e Operabl e Uni t 2 

# Midvale

, Utah Propose d Alternat e Concentratio n Limit s Septembe r 200 2 S^frtlD 200163J



# Technical Memorandum

# I I

I I I 

# I I 

# I I I 

# I I I I I I Technica l

Memorandu m Midval e Sla g Operabl e Uni t 2

• Propose d

Alternat e Concentratio n Limit s 

# I I Sectio n

1 Introductio n

The purpos e o f thi s technical memorandum i s t o presen t th e methodologie s use d t o develo p alternat e concentratio n limit s (ACLs ) an d propos e AC L numeri c value s fo r t h e Midval e Sla g Operabl e Uni t 2 Superfun d Sit e (Site)

. ACL s wil l b e establishe d in groundwate r i n the Uppe r San d an d Grave l (US&G ) aquife r an d wil l b e use d t o monito r th e preferre d groundwate r remedia l alternativ e fo r th e site

. A discussio n i s als o provide d regardin g th e relationshi p betwee n th e ACL s an d managemen t o f area s considere d t o be th e source s o f US& G aquife r contamination

.



# CO M 1- 1

P:\3280-RAC8\oaawcHDocumon(slAC

L Tec h Mem o Final.do c

# I

Sectio n 2 | 

# Backgroun d

.

T h e preferre d groundwate r alternativ e presente d i n th e propose d pla n i s Alternativ e GW-2

, Limite d Actio n wit h Alternat e Concentratio n Limits

. A preliminar y determinatio n o f thes e ACL s was presente d i n th e Appendi x B o f th e groundwate r 

## focuse d feasibilit y stud y (FFS ) (CDM Federa l Programs Corporatio n [CDM ] 2002)

. T h e determinatio n was based o n meetin g th e requirement s o f Sectio n 121(d)(2)(B)(ii

)



## o f th e Comprehensiv e Environmenta l Response

, Compensatio n an d Liabilit y Ac t 

## (CERCLA)

. Severa l step s wer e use d i n th e FF S t o establis h ACL s fo r contaminant s o f •

• 

# I

concer n (COCs ) at the Site : 

# I



# I • COC s fo r whic h ACL s wer e considere d wer e limite d t o contaminant s tha t emanat e fro m source area s i n OU 2 and tha t hav e know n o r projecte d point s o f discharg e t o th e Jorda n Rive r (antimony

, arsenic

, cadmium

, an d selenium)

.

• Preliminar y ACL s fo r selecte d COC s ar e base d o n a bac k calculatio n fro m wate r | qualit y criteria fo r surfac e wate r concentration s i n th e Jorda n Rive r (eithe r Uta h

wate r qualit y standard s o r backgroun d concentrations)

.

•



## • Preliminar y ACL s d o no t reflec t a statisticall y significan t increas e i n down-rive r 

## surfac e wate r concentrations

. • T h e calculation s presente d i n th e FF S hav e bee n revise d base d o n comment s receive d 

## b y stakeholders

, a n expande d assessmen t o f backgroun d surfac e wate r concentrations

, an d th e nee d t o determin e ACL s fo r poin t o f assessmen t locations

. 

## Th e modification s mad e t o th e calculation s an d th e us e o f th e revised AC L value s i n groundwate r monitorin g are discusse d i n Sectio n 3

. Calculation s are include d i n • 

## Attachmen t A

. Comment s wer e als o receive d regardin g th e managemen t o f area s • considere d t o b e source area s fo r groundwate r contaminatio n an d th e resultin g influenc e o n the validit y o f the ACLs

. Thes e issue s ar e discusse d i n Sectio n 4

. I 

# I I I I I C D M 2 1

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Tec h Memo Final.do c

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# I I Sectio n

3 

# Revise d AC L Calculation s

The AC L calculation s hav e bee n revised base d on an assessment o f the backgroun d 

## surfac e wate r concentrations fo r selecte d COCs

. AC L value s hav e bee n calculate d followin g two methods

. The firs t metho d i s based o n a bac k calculatio n fro m a promulgate d surfac e wate r qualit y standar d i n th e Jorda n River

. Th e second metho d i s base d on no t surpassin g a statisticall y significan t increas e i n surfac e wate r 

## concentrations i n th e Jorda n Rive r fro m th e upgradien t t o th e downgradien t sid e o f the site

. A n overview o f method s use d and the result s o f the calculation s are 

## provide d i n th e followin g sections

. I n addition

, preliminar y ACL s hav e bee n calculate d fo r discret e location s withi n th e arseni c plum e a t th e boundar y o f th e Jorda n Rive r fo r us e i n assessmen t monitoring

. 

# 3. 1 Calculatio n Base d o n Surfac e Wate r Qualit y Criteria Promulgate d surfac e wate r qualit y criteri a fo r th e reac h o f th e Jorda n Rive r (UA C 317

- 2 ) can b e use d t o calculat e the maximum allowabl e groundwate r concentratio n tha t



## ca n discharg e t o th e rive r through a flow-weighte d mixin g method

. I n thi s method

, the flo w rat e and backgroun d concentratio n i n the Jorda n Rive r are known

, the discharg e rat e fo r th e contaminate d groundwate r i s known

, an d th e allowabl e 

## concentratio n i n groundwate r (ACL ) i s bac k calculate d base d o n not exceedin g the selecte d surfac e wate r qualit y criteria

. A desig n low-flo w rat e fo r th e Jorda n Rive r i s



## use d i n the calculatio n s o tha t resultan t groundwate r concentration s coul d not resul t i n a surfac e wate r qualit y exceedanc e at norma l flo w rates

. Surfac e wate r o f th e Jorda n Rive r i s designate d Clas s 2 B (protecte d fo r secondar y contac t recreation)

, Clas s 

## 3 A (protecte d fo r col d wate r specie s o f gam e fis h an d othe r col d wate r aquati c life)

, an d Clas s 4 (protecte d fo r agricultura l uses)

. Th e lowes t concentratio n valu e amon g 

## the thre e classe s wa s use d i n the AC L calculations

. The values use d an d result s o f the calculation s ar e show n i n Tabl e 3-1

. Calculatio n 

## brief s ar e provide d i n Attachmen t A

. Th e ACL s tha t resul t fro m thi s calculatio n ar e averag e values fo r th e entire constituen t plum e at th e poin t o f discharg e t o tine river

. Therefore

, th e on e calculate d valu e i s a representativ e AC L value fo r th e entir e plume

, 

## regardles s o f locatio n withi n th e plume

.



# CO M 3- 1

P:O280.RAC8\086W:UDocumen!sVAC

L T«ct i Mam o Flnal.do c

### Section 3 

### Revised ACL Calculations 

## Table 3- 1 ACL s Based o n Surfac e Wate r Qualit y Criteri a

Contaminan t

o f Concer n

Arseni c Cadmiu m Seleniu m Antimon y Site-Specifi c

Dat a 

### Backgroun d Rive r Cone

. (TO/L )

1 1

0. 9

1. 9

0. 6 

### Rive r Desig n 

### Low-Flo w Rat e 21.7 2

21.7 2

21.7 2

21.7 2 

### Groundwate r Flo w Rat e 

### (cfs )

0.3 1

0.07 2

0.14 4

0.04 3 Wate r Qualit y Criteri a

Clas s

4

3 A

3 A



### 3 

### Concentratio n 

# (jjg/ D

10 0



## 1 . 1

5

4,30 0 

### A C L 

# (pg'L )

6,33 6

6 1



### 47 3

2,175,99 7 

### j;g/ L

= micrograms per liter 

### cfs

= cubic feet per second Surface water quality criteria in Jordan River (UAC 317-2) 3 -Criteria for Human Health 

### 3A -Criteria for Aquatic Wildlife (Cold Water)

4 -Agricultural and Stock Watering



# 3 . 2 Calculatio n Base d o n N o Statisticall y Significan t 

# Increas e in Surfac e Wate r Concentration s Th e backgroun d wate r qualit y fo r th e reac h o f th e Jorda n Rive r abov e OU 2 ca n be



## use d t o calculat e th e maximum allowabl e groundwate r concentratio n tha t ca n 

## discharg e t o th e rive r through th e sam e flow-weighte d mixin g method

. I n thi s method

, th e flo w rat e an d backgroun d concentratio n i n th e Jorda n Rive r ar e known

, th e discharg e rat e fo r th e contaminate d groundwate r i s known

, an d th e allowabl e concentratio n i n groundwate r (ACL ) i s bac k calculate d base d o n not exceedin g on e standar d deviatio n i n th e backgroun d wate r quality

. Th e minimu m mea n dail y flo w 

## rat e fo r the Jorda n Rive r i s use d i n the calculatio n s o tha t a statisticall y significan t 

## increas e i s no t observe d a t averag e dail y flo w rates

. Th e values use d an d result s o f the calculation s are show n i n Tabl e 3-2

. Calculatio n brief s are provide d i n Attachmen t B

. Th e ACL s tha t resul t fro m thi s calculatio n ar e averag e value s fo r th e entire constituen t plum e a t th e poin t o f discharg e t o th e river

. Therefore

, th e on e calculate d valu e i s a representativ e AC L value fo r th e entire plume

, regardles s o f locatio n withi n th e plume

.

3- 2

P:U280.RAC8\086\ACUDocuinef«W: L

Tec h Mem o Firal.do c 

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# I I I Section 3 Revised ACL Calculations 

## Table 3- 2 ACL s Based o n Statisticall y Significan t Increas e

Contaminan t o f Concer n

Arseni c Cadmiu m Seleniu m 

### Antimon y Site-Specifi c Dat a



### Backgroun d 

### Rive r Cone

. (M9/L )

1 1

0.9

1. 9

0. 6 Standar d 

### Deviatio n (P9/L )

5. 5

0. 7

0. 8

0. 1 

### Min

. Mea n Dail y Rive r Flo w Rat e 

### (cfs )

161. 3

161. 3

161. 3

161. 3 

### Groundwate r Flo w Rat e 

### (cfs )

0.3 1

0.07 2

0.14 4

0.04 3 A C L 

# (pg/L

2,870

1,56 0

90 0

38 0



# 3. 3 Calculatio n o f Arsenic Concentration s at Discret e 

# Location s T h e previous tw o calculation s provide d AC L values tha t ar e representativ e o f th e 

## entir e plum e versu s discret e location s o r segment s o f th e plume

. Th e following calculatio n employ s a weightin g metho d tha t allow s th e cente r o f th e plum e t o 

## contribut e mor e and the fringe s o f the plum e t o contribut e les s base d on the observe d plum e configuration

. I n thi s example

, th e arseni c plum e has bee n separate d int o fiv e segment s a s show n i n Figur e 3-1

. Th e value s use d and result s o f th e calculation s are show n i n Tabl e 3-3

. Th e ACL s tha t resul t fro m thi s calculatio n ar e averag e value s fo r

eac h segment a s woul d b e measure d a t th e poin t o f discharg e t o th e river. Th e 

## averag e arseni c AC L base d o n th e entire plume

, a s calculate d i n sections 3. 1 an d 3. 2

ar e presente d a t th e botto m o f th e tabl e fo r comparativ e purposes

.



# CO M 3-3

P:\32aO-RACaV036\ACLtDocuments\AC

L Tec h Memo FiuLdo c

### Section 3 

### Revised ACL Calculations 

## Table 3- 3 Compariso n o f Discret e Locatio n Arseni c ACL s Locatio n



### Segmen t 1 Segmen t 2 Segmen t 3 Segmen t 4 Segmen t 5 

### Averag e discharg e concentratio n Observe d

Cone

. (H9/L )

16 0

1,30 0

1,90 0

1,00 0

45 0

71 0 A C L Based o n 

### Wate r Qualit y Criteri a (\iglL) 

### (se e Sectio n 3.1 )

131 6

10,69 0

15,62 3

8,22 3

3,70 0



### 6,33 6 A C L Based o n 

### Significan t Increas e (pg/L ) (se e Sectio n 3.2 )

59 6

4,842



### 7,077

3,72 5

1,67 6



### 2,870



## A s show n i n Tabl e 3-3

, th e AC L fo r arseni c coul d rang e fro m 2,87 0 pg/ L t o 15,623 

## Pg/ L based o n th e metho d use d an d th e us e o f averagin g versu s discret e points

. Th e maximu m observe d arseni c concentratio n observe d i n monitorin g well s complete d 

## withi n th e arseni c plum e nea r th e discharg e point s alon g th e Jorda n Rive r ove r th e perio d fro m fro m 199 7 t o 2001 ranges fro m 16 0 pg/L t o 1,90 0 pg/L



# 3 . 4 Selectio n o f ACL s fo r Groundwate r Monitorin g Based o n th e revised calculations

, th e following ACL s ar e recommende d fo r us e 

## durin g groundwate r monitorin g i n point s o f assessmen t adjacen t t o th e Jorda n River : 

# Arseni c A value o f 7,00 0 pg/ L i s proposed

. Thi s AC L provide s tha t th e groundwate r 

## discharg e fro m th e cor e o f th e plum e wil l no t resul t i n a statisticall y significan t 

## increas e i n th e concentrations within th e Jorda n River

. 

# Cadmiu m A value o f 1,56 0 pg/ L i s proposed

. Th e cadmiu m plum e has no t ye t reache d th e 

## Jorda n River

. This AC L i s base d o n projecte d point s o f entr y fo r th e cadmiu m plume

, an d provide s that th e groundwate r discharg e fro m th e entir e plum e wil l no t resul t i n

a statisticall y significan t increas e i n th e concentration s within th e Jorda n River

. 

# Seleniu m A value o f 90 0 pg/ L i s proposed

. Th e seleniu m plum e has no t ye t reache d th e Jorda n 

## River

. Thi s AC L i s based o n projecte d point s o f entr y fo r th e seleniu m plume

, an d provide s tha t th e groundwate r discharg e fro m th e entir e plum e wil l no t resul t i n a statisticall y significan t increase i n th e concentration s within th e Jorda n River

. CO M 3- 4

P:\3280-RAC8\086\ACUDocumenta\AC

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# Antimon y A valu e o f 38 0 Mg/ L i s proposed

. Thi s AC L i s base d o n projecte d point s o f entr y fo r th e antimon y plume

, an d provide s tha t th e groundwate r discharg e fro m th e entire 

## plum e wil l not resul t i n a statisticall y significan t increas e i n the concentration s withi n th e Jorda n River

.



# CO M 3- 5

P-V3230-RACa\Oe8WCHDocum«msWC

L Tec h Mem o Final.do c

# I

Sectio n 4 I 

# Influenc e o f Sourc e Areas o n ACL s • Previou s groundwate r contaminant transpor t modelin g wor k performe d fo r arseni c B

i n the US& G aquife r wa s reviewed t o evaluat e whethe r variations i n estimate s o f

source are a volume and/o r concentratio n woul d chang e th e result s o f th e modeling

. I 

## Prediction s o f arseni c concentration s i n th e US& G aquife r mad e fro m modelin g ar e TM presentl y compare d t o the AC L fo r arseni c i n orde r t o evaluat e whethe r a n 

## exceedanc e i s likely

. A s a result

, changes i n modelin g result s base d on revision s i n •

source are a characteristic s coul d affec t th e evaluatio n o f AC L exceedance

. TM



## Th e influenc e o f arseni c source area s o n th e US& G aquife r wa s examine d durin g th e • supplementa l remedia l investigatio n i n 199 8 (Sverdru p 1998)

. A simpl e analytica l ^ 

## groundwate r flo w an d contaminan t transpor t mode l wa s develope d usin g AT123 D t o predic t arseni c transpor t i n th e US& G aquife r unde r current sit e conditions

. I n thi s • modelin g exercise

, individua l simulation s o f simplifie d sources wer e superimpose d t o ^ 

## yiel d a composit e arseni c distributio n i n th e aquifer

. Th e sourc e are a contaminan t level s wer e adjuste d t o achiev e th e currentl y observe d distributio n o f arsenic

. Sourc e • contaminan t level s wer e assumed t o b e constan t fo r th e 200-yea r perio d o f th e simulation

. Based on the retardatio n facto r used i n the calculatio n (29.4 ) and the ,

_ 

## observe d groundwate r velocit y (1. 2 fee t pe r day)

, i t i s estimate d tha t arseni c release s I



## t o th e aquife r began about 7 0 year s ago

. The mode l predict s tha t concentration s approachin g stead y stat e wil l be reache d approximatel y 20 0 years (13 0 year s fro m ^



## now ) fro m initia l release

, wit h concentration s o f u p t o 5,00 0 Mg / L reachin g th e Jorda n • Rive r i n the cor e o f the plum e (th e averag e plum e discharg e at thi s tim e i s 

## appr o ximatel y 90 0 M g / L)

. m 

## Conclusion s tha t ca n b e drawn fro m thi s modelin g ar e a s follows :



## • Sourc e are a contaminatio n level s wer e estimate d independentl y o f th e volum e o r • concentratio n o f th e sourc e materials

. Loadin g rate s wer e adjuste d t o achiev e th e 

## observe d condition

. A s a result

, variation s i n estimate s o f leachabl e volume s o f ; • material s .present o n th e sit e have n o impac t o n th e mode l results

. •

• Sourc e are a strength s wer e assumed t o b e constant

. Thi s i s conservativ e sinc e «

source loadin g generall y decrease s wit h time

. •



## • Leavin g source s area s i n plac e does no t affec t modelin g results

. Sourc e loadin g ^ rate s assume d tha t present conditions woul d continue

. •

• Th e effect s o f potentia l enhanced leachin g o f source s wer e no t incorporated

. — Therefore

, th e validit y o f th e mode l result s depend s o n maintainin g infiltratio n a t •

curren t rates

. Institutiona l control s wil l b e necessar y t o limi t surfac e irrigatio n an d 

## infiltratio n cause d b y surfac e wate r managemen t t o maintain th e infiltratio n • 

## conditions

. •



# I CO M 4- 1 

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2254200

-

2254000

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2253400

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2253200

-

2253000

-

225280 0 46430 0 46450

0 46490 0 465100 46530 0



### 429 0 Maximu m Arseni c Concentratio n (ug/L ) US& G Groundwate r Elevatio n (2001 ) Contou r interva l

= 0. 5 f t 

### Plum e Segmen t Boundar y 

# N Figur e 3- 1 

# Maximu m Dissolve d Arsenic US& G Aquifer

, 1997-200 1 Midval e Sla g Superfun d Sit e Midvale

, Uta h

# I

Attachmen t A 

# Calculatio n Base d o n Surfac e Wate r Qualit y Criteria

# CO M Midval e Sla g OU 2 By : B

. Cotto n 8/26/200 2 

### 3282-986-FSZ-FGRC

Z Ck : MJ S 8/30/200 2 

### Maximu m Allowabl e Averag e Discharg e Concentration s i n th e US& G Aquife r base d o n Surfac e Wate r Qualit y 

## Criteria Objectiv e - 

## Estimat e maximu m averag e discharg e concentration s fo r site-derive d constituent s i n th e US& G Aquife r tha t wil l no t resul t in exceedance s in th e surfac e wate r qualit y o f th e Jorda n Rive r a t desig n lo w flo w 

## rates

. Metho d

- Groundwate r concentration s ar e estimate d b y back-calculatin g fro m surfac e wate r qualit y criteria

. A 

## weighte d averag e mixin g calculatio n is performed

. This calculatio n require s estimatio n o f th e flo w contributio n mad e b y groundwater

, estimatio n o f th e desig n lo w flo w rat e in th e river

, an d th e estimatio n

o f th e upstrea m concentratio n in th e Jorda n River

. Th e maximu m concentratio n in groundwate r ca n 

## the n b e calculate d a s follows :

or : where : Criv*Qri

v + Qgw*Cg w = (Qri v + Qgw)*Cwq c 

## Cg w = ((Cwq c - Criv)*Qriv)/Qg w + Cwq c 

## Cri v = upstrea m surfac e wate r concentratio n Qri v = flo w rat e fo r river C g w = maximu m allowabl e averag e discharg e concentratio n in groundwate r Q g w = flo w rat e fo r contaminate d groundwate r 

## Cwq c = water qualit y criteri a fo r rive r Assumption s - 

## T h e following assumption s ar e made :

1

. Upstrea m consituen t concentration s in th e Jorda n Rive r have been estimate d separately

. 

## 2

. Th e desig n lo w flo w rat e fo r th e rive r i s 21.7 2 cfs

. Thi s i s th e 4E 3 defaul t chronic desig n flow

. Th e valu e belo w whic h th e 4-da y harmoni c mea n flo w doe s no t dro p mor e tha n once



## ever y 3 years , o n average

. 3

. Th e groundwate r discharg e rat e fo r respectiv e constituen t plume s have bee n estimate d 

## separately

. 4

. Th e lowes t standar d pe r eac h constituen t i s used as provide d fo r i n UA C R317- 2 pe r th e



## reac h o f th e Jorda n River i n OU2

. Calculation s - 

## T h e followin g tabl e summarize s th e value s used in th e calculatio n an d th e results

. Constit

. A s C d 

## S e S b Cri v ug/ l 1 1 0. 9 1. 9 0. 6 Qri v c f s 21.7 2 21.7 2 21.7 2 21.7 2 Qg w c f s 0.31 0.07 2 0.14 4 0.04 3 Cwq c 

### ug/ l 10 0 1. 1 5 4300 

## Standar d

4 3 A

3 A

3 

### C g w ug/ l 6,33 6 6 1 47 3 2,175,99 7

Re : MAADC.xl s Pag e 1 o f 2 

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. Cotto n 3/26/200 2 3282-986-FSZ-FGRC

Z Ck : MJ S 3/30/200 2 

## Maximu m Allowabl e Averag e Discharg e Concentration s i n th e US& G Aquife r base d o n Surfac e Wate r Qualit y Criteria Reference s - 

## E P A 2002

. Estimate d backgroun d concentration s i n surfac e wate r o f th e Jorda n River

. Augus t 30

, 2002

. (attached ) 

## C O M 2002

. Estimate d groundwate r info w rates ; arsenic

, cadmium

, selenium

, an d antimon y plumes

. Calculatio n brief s presente d i n Appendi x C o f th e Groundwate r FFS

. 

## C D M 2001

. Jorda n River lo w flo w evaluation

. Calculatio n brie f presente d i n Appendi x C o f th e Groundwate r FFS

.

File : MAADC.xl s Pag e 2 o f 2

# Attachmen t B Calculatio n Base d o n N o Statisticall y Significan t Increas e i n Surfac e Wate r Concentration s

# CO M Midval e Sla g OU 2 By : B

. Cotto n 8/26/200 2 3282-986-FSZ-FGRC

Z Ck : MJ S 8/30/200 2 

## Maximu m Allowabl e Averag e Discharg e Concentration s i n US& G Aquife r base d o n Statisticall y Significan t 

## Increas e Objectiv e - Estimat e allowabl e averag e discharg e concentration s fo r constituent s i n th e US& G Aquife r tha t 

## wil l no t resul t i n statisticall y significan t increase s i n th e correspondin g surfac e wate r qualit y o f th e • Jorda n River

. • 

## Metho d

- M A simpl e mixin g mode l i s applied

. Th e flo w rat e an d concentratio n i n th e groun d wate r i s adde d 

## t o th e flo w rat e an d concentratio n i n th e river

. C

= (Cgw*Qg w + Criv*Qriv ) / (Qg w + Qriv ) 

# I

where : m C

= surfac e wate r concentratio n afte r mixin g I C g w = averag e discharg e concentratio n fro m th e groundwate r plum e 

## Q g w = flo w rat e fo r groun d wate r plum e

_ Criv = surfac e wate r concentratio n prio r t o mixin g • 

## Qri v = surfac e wate r flo w rat e prio r t o mixin g T h e surfac e wate r flo w rate

, Qriv

, is th e mean dail y flo w rat e fo r th e reac h o f th e Jorda n Rive r i n • 

## OU2

. Th e mean dail y flo w rates ar e estimate d usin g th e dail y flo w statistic s develope d fo r USG S • Gag e No

. 1017049 0

- Combine d Flo w o f Jorda n Rive r an d Surplu s Canal

. A correlatio n betwee n 

## flo w dat a fro m thi s gage , locate d dow n strea m o f th e site

, an d th e gag e neare r th e sit e (USG S Gag e No

. 1016723 0

- Jorda n Rive r a t 9000 South

, nea r Midvale

, UT ) wa s determine d a s par t o f l o w flo w calculations

. Thi s relationshi p is : Qu s = 0.7825*Qds-158.7

2 

## where : 

# I

eie

. M 

## Qd s = dail y mean flo w rat e a t gag e 1017049 0 (downstream ) • Q u s = dail y mean flo w rat e a t gag e 1016723 0 (Midvale ) 

## T h e averag e discharg e concentratio n i n groundwate r (Cgw ) i s varie d suc h tha t th e concentratio n • 

## in th e Jorda n Rive r afte r mixin g (C ) i s alway s les s tha n tha t which woul d b e deeme d a statisticall y TM significan t increase

. Thi s leve l o f increas e ca n been define d b y th e variabilit y i n th e sampl e 

## results

. . •

Assumption s - • T h e followin g assumption s ar e made : 1

. Mea n backgroun d COC concentration s have been estimate d separately

. M 

## 2

. Th e calculate d mean dail y flo w rate s ar e representativ e o f averag e condition s fo r th e • Jorda n Rive r a t Midval e Sla g OU2

. 3

. Groundwate r discharg e rat e fo r th e respectiv e constituen t plume s hav e bee n estimate d

_ 

## separately

. • 4

. A statisticall y significan t increas e require s a measuremen t valu e greate r tha n 1 

## standar d deviation s abov e th e mean concentration

.

File : StatSig.xl s 

### Sheet : Calc

. Pag e 1 o f 2 

# I I

## U

2 By : B

. Cotto n 8/26/200 2 =GRC Z Ck : MJ S 8/30/200 2 

## Maximu m Allowabl e Averag e Discharg e Concentration s i n US& G Aquife r base d o n Statisticall y Significan t 

# 1 1 

# 1 1 

# 1 1 

# 1 1 

# 1 1 1 

# 1 1 1 

# 1 1 

# 1 1 

# 1 CO M Midvale Sl a 3282-986- F 

## Maximu m A Increas e 

## Calculation s A ( 1

C

t t



## e 

# g

Reference s C S I 

## C P



# u F E

3 i U 

## F

File : StatSig.xl s Sheet : Calc

. 

## Assume d backgroun d concentration s an d th e relativ e standar d deviatio n fo r eac h constituen t 

## (base d measure d strea m concentrations ) ar e as follows : Constit

. A s C d S e S b Cone

. ug/ L

1 1 0. 9 1. 9 0. 6 S D uq/ l 5. 5 0. 7 0. 8 0. 1 

## Maximu m

S W Cone

, 

## ug/ l 16.5 0 1.6 0 2.7 0 0.7 0



## Constit

. A s C d S e S b 

## Flo w Rat e (cfs )

0.3 1 0.07 2 

## 0.144 0.04 3 

## Calculation s ar e provide d pe r constituen t i n a correspondin g table

. Graph s ar e include d showin g 

## t h e predicte d concentratio n in th e Jorda n Rive r as a resul t o f discharge

, an d th e probabilit y o f no t exceedin g surfac e wate r concentration s nea r th e maximum

. A summar y o f th e maximu m allowe d groundwate r discharg e concentration s is presente d i n th e followin g table : Constit

. A s C d S e S b 

## Maximu m G W Cone

. (ug/L )

287 0 

## 156 0 90 0 38 0



## C O M 2002

. Maximu m allowabl e averag e discharg e concentratio n fo r th e US& G Aquife r base d o n 

## surfac e wate r qualit y criteria

. Calculatio n brie f Augus t 2002

. C O M 2002

. Estimate d groundwate r info w rates ; arsenic

, cadmium

, selenium

, an d antimon y plumes

. Calculatio n brief s presente d i n Appendi x C o f th e Groundwate r FFS

. 

## USG S 2002

. Wate r resource s data

. Dail y streamflo w statistic s fo r statio n 1017049 0

- Combine d 

## Flow

, Jorda n Rive r an d Surplu s Cana l a t Sal t lak e City

, U T E R A 2002

. Estimate d backgroun d concentration s in surfac e wate r o f th e Jorda n River

. Augus t 30

, 2002

. 

## USG S 2002

. Wate r resource s data

. Dail y streamflo w statistic s fo r statio n 1017049 0

- Combine d 

## Flow

, Jorda n Rive r an d Surplu s Cana l a t Sal t lak e City

, U T

Pag e

2 o f 2

## Estimate d Mea n o f Mea n Dail y Flo w Rate s an d Predicte d Arseni c Concentration s i n th e Jorda n Rive r wit h Groundwate r Discharg e a t 287 0 ug/ l Midval e Slag OU 2



## Jorda n Rive r Mea n Flo w A s Concentratio n

100 0. 0

Da y

File : StatSig.xl s Page : A s Cone

. & Flo w 9/24/200 2 

### Pag e 1 o f 1

## Estimate d Arseni c Concentration s i n th e Jorda n Rive r a t Mea n Dail y Flo w Rat e Probabilit y o f Non-Exceedanc e wit h Groundwate r Discharg e a t 287 0 ug/ l



## an d Upstrea m Concentratio n a t 1 1 ug/ l

1.0 0

0.9 0

0.1 0

0.0 0 12. 0 12. 5

13. 0 13. 5 14. 0 14. 5 15. 0 

## Concentratio n (ug/l ) 15. 5 16. 0 16. 5 17. 0

File : StatSig.xls Page : A s Prob

. 9/24/200 2 Pag e 1 o f 1

# CO M Midval e Slag OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Arseni c Concentration s i n th e Jorda n Rive r base d o n Mea n o f Dail y Mea n Flo w 

## Groun d Water/Surfac e Wate r Mixing Parameter s Groun d wate r flo w rat e = 0.3 1 cf s 

## Averag e groun d wate r concentratio n = 287 0 ug/ l Averag e surfac e wate r concentratio n = 1 1 ug/ l Max

=

16.5 1 M in = 12.5 9

Mont h

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 

### 2 2 2 2 2 2 2 2 2 2 2 2 2 

### Da y

1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 

### Mea n Flo w Rat e - D G (cfs)

47 0 47 4 47 6 46 7 47 1 47 0 46 8 46 9 47 0 47 4 47 9 48 0 48 1 48 7 48 8 48 7 49 3 48 0 48 1 47 2 48 6 48 8 48 7 48 8 49 4 50 1 50 3 50 2 49 8 49 7 49 9 50 2 50 6 52 2 52 7 53 1 53 3 53 4 536 540 54 3 55 0 56 0 56 7 57 8 57 8 57 6 

### Mea n Flo w Rat e - U G 

### (cfs)

209. 1 212. 2 213. 8 206. 7 209. 8 209. 1 207. 5 208. 3 209. 1 212. 2 216. 1 216. 9 217. 7 222. 4 223. 1 222. 4 227. 1 216. 9 217. 7 210. 6 221. 6 223. 1 222. 4 223. 1 227. 8 233. 3 234. 9 234. 1 231. 0 230. 2 231. 7 234. 1 237. 2 249. 7 253. 7 256. 8 258. 4 259. 1 260. 7 263. 8 266. 2 271. 7 279. 5 285. 0 293. 6 293. 6 292. 0 

### Mixe d Cone

, 

### (ug/l )

15.2 3 15.1 7 15.1 4 15.2 8 15.2 2 15.2 3

- 15.2 7 15.2 5 15.2 3 15.1 7 15.1 0 15.0 8 15.0 7 14.98 14.9 7 14.9 8 14.9 0 15.0 8 15.0 7 15.2 0 14.9 9 14.9 7 14.9 8 14.9 7 14.8 8 14.7 9 14.7 7 14.7 8 14.8 3 14.8 5 14.8 2 14.7 8 14.7 3 14.5 4 14.4 9 14.4 5 14.4 3 14.4 2 14.4 0 14.36 14.3 3 14.2 6 14.1 7 14.1 1 14.0 2 14.0 2 14.0 3 

### Ran k

157 16 3 16 7 15 3 161 15 8 15 5 15 6 15 9 16 4 171 17 2 17 6 18 1 18 4 18 2 18 8 17 3 17 7 16 2 180 18 5 18 3 18 6 18 9 19 7 20 2 19 9 19 4 193 19 5 20 0 20 4 207 20 9 21 0 21 1 21 3 21 6 21 8 21 9 22 0 22 2 22 3 23 1 23 2 22 9 

### Prob

. o f Non

- Exceed

.

0.5 7 0.5 6 0.5 4 0.5 8 0.5 6 0.5 7 0.5 8 0.5 7 0.5 7 0.5 5 0.5 3 0.5 3 0.5 2 0.5 1 0.5 0 0.5 0 0.4 9 0.5 3 0.5 2 0.5 6 0.5 1 0.5 0 0.5 0 0.4 9 0.4 9 0.46 0.4 5 0.4 6 0.4 7 0.47 0.4 7 0.4 6 0.4 4 0.4 4 0.4 3 0.4 3 0.4 3 0.4 2 0.4 1 0.4 1 0.4 0 0.4 0 0.4 0 0.3 9 0.37 0.37 0.3 8 

### Probabilit y o f Occurrence

0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7



### File : StatSig.xl s 

### Sheet : A s Summar y 

### Pag e 1 o f 8 

# I I 

# I I 

# I I 

# I I I 

# I I I 

# I I I I 

# I I 

# I

# CO M Midval e Slag OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Arseni c Concentration s i n th e Jorda n Rive r base d o n Mea n o f Dail y Mea n Flo w 

## Groun d Water/Surfac e Wate r Mixin g Parameter s Groun d wate r flo w rat e = 0.31 cf s 

## Averag e groun d wate r concentratio n = 287 0 ug/ l Averag e surfac e wate r concentratio n = 1 1 ug/ l Ma x = M in = 16.5 1 12.5 9

Mont h

2 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 

### 3 3 3 3 

### 3 3 3 

### 3 3 3 3 3 3 3 3 3 3 3 3 4 4 

### Da y

1 7 1 8 1 9 2 0 2 1 

### 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 1 2 3 4 5 

### 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 

### 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 1 2 

### Mea n Flo w 

### Rat e - D G (cfs )

57 8 58 9 587 58 5 58 8 601 596 60 0 60 0 59 7 60 0 59 8 59 9 

### 58 9 58 2 58 7 58 1 58 3 58 7 57 8 58 0 59 1 

### 586 587 58 4 

### 57 8 58 3 58 3 57 9 

### 58 1 57 8 57 7 57 4 57 3 57 4 59 3 60 4 61 5 61 4 61 7 62 4 61 2 61 0 61 3 

### 62 2 64 7 

### Mea n Flo w Rat e - U G 

### {cfs )

293. 6 302. 2 300. 6 299. 0 301. 4 311. 6 307. 7 310. 8 310. 8 308. 4 310. 8 309. 2 310. 0 302. 2 296. 7 300. 6 295. 9 297. 5 

### 300. 6 293. 6 295. 1 303. 7 

### 299. 8 300. 6 298. 3 293. 6 297. 5 297. 5 294. 3 

### 295. 9 293. 6 292. 8 290. 4 289. 7 290. 4 305. 3 

### 313. 9 322. 5 321. 7 324. 1 329. 6 320. 2 318. 6 321. 0 328. 0 347. 6 

### Mixe d Cone

, 

### (ug/l )

14.0 2 13.93 13.95 13.9 6 13.94 13.8 4 13.88 13.8 5 13.8 5 13.8 7 13.8 5 13.8 6 13.8 6 13.93 13.98 13.95 13.9 9 13.98 13.95 14.0 2 14.0 0 13.9 1 13.9 5 13.95 13.9 7 14.0 2 13.9 8 13.98 14.0 1 

### 13.9 9 14.0 2 14.0 2 14.0 5 14.0 6 14.0 5 13.9 0 13.8 2 13.7 5 13.7 5 13.7 3 13.6 9 13.7 7 13.7 8 13.7 6 13.7 0 13.5 5 

### Ran k

23 3 25 4 24 9 24 7 25 3 26 6 25 8 26 3 26 4 25 9 26 5 26 0 26 2 25 5 24 2 25 0 24 0 24 3 251 23 4 23 9 25 6 24 8 25 2 24 6 23 5 24 4 24 5 23 7 24 1 23 6 230 226 22 5 22 7 25 7 26 7 27 4 27 3 27 5 28 1 27 0 26 9 27 1 27 9 30 0 

### Prob

. o f Non

- Exceed

.

0.3 7 0.31 0.3 2 0.3 3 0.31 0.2 8 0.3 0 0.2 8 0.2 8 0.2 9 0.2 8 0.2 9 0.2 9 0.31 0.3 4 0.3 2 

### 0.3 5 0.3 4 0.3 2 0.3 6 0.3 5 

### 0.3 0 0.3 2 0.31 0.3 3 

### 0.3 6 0.3 4 0.3 3 0.3 5 

### 0.3 4 0.3 6 0.3 7 

### 0.3 8 0.3 9 0.3 8 0.3 0 0.2 7 0.2 5 0.2 6 0.2 5 0.2 3 0.2 6 0.27 0.2 6 0.2 4 0.18 

### Probabilit y o f Occurrence

0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 

### 0.002 7 0.002 7 0.002 7 

### 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7



### File : StatSig.xl s Sheet : A s Summar y 

### Pag e 2 o f 8

# CO M Midval e Slag OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Arseni c Concentration s i n th e Jorda n River base d o n Mea n o f Dail y Mea n Flo w 

## Groun d Water/Surfac e Wate r Mixin g Parameter s Groun d wate r flo w rat e = 0.3 1 cf s 

## Averag e groun d wate r concentratio n = 287 0 ug/ l Averag e surfac e wate r concentratio n = 1 1 ug/ l Ma x = M i n = 16.5 1 12.5 9

Mont h



### 4 4

4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 

### Da y

3 4 5 6 7 

### 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 17 1 8 1 9 2 0 21 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 1 2 3 4 

### 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 .1 5 1 6 1 7 1 8 

### Mea n Flo w Rat e - D G 

### (cfs)

63 1 61 9 61 3 62 0 62 2 62 7

! 63 2 63 1

. 62 9 63 5 62 9 62 4 62 4 62 4 

### 61 7 64 3 65 0 65 4 64 8 64 5 63 9 65 0 647 65 4 66 3 65 0 65 3 63 2 63 3 63 4 65 5 65 7 647 647 65 8 67 2 67 4 68 4 68 3 67 3 68 5 68 3 71 8 736

- 73 5 72 0 

### Mea n Flo w 

### Rat e - U G 

### (cfs)

. 335. 0 325. 6 321. 0 326. 4 328. 0 331. 9 335. 8 335. 0 333. 5 338. 2 

### 333. 5 329. 6 329. 6 329. 6 324. 1 344. 4 349. 9 353. 0 348. 3 346. 0 341. 3 349. 9 347. 6 353. 0 360. 1 349. 9 352. 3 335. 8 336. 6 337. 4 353. 8 355. 4 347. 6 347. 6 356. 2 367. 1 368. 7 376. 5 375. 7 367. 9 377. 3 375. 7 403. 1 417. 2 41.6. 4 404. 7 

### Mixe d Cone

, 

### (ug/l )

13.6 4 13.7 2 13.7 6 13.71 13.7 0 13.6 7 13.6 4 13.6 4 13.6 6 13.6 2 13.6 6 13.6 9 13.6 9 13.6 9 

### 13.7 3 13.5 7 13.5 3 13.5 1 13.5 4 13.5 6 13.5 9 13.5 3 13.5 5 13.5 1 13.4 6 13.5 3 13.51 13.6 4 13.6 3 13.6 2 13.5 0 13.49 13.5 5 13.5 5 13.4 9 13.4 1 13.4 0 13.3 5 13.3 6 13.4 1 13.3 5 13.3 6 13.2 0 13.1 2 13.1 3 13.1 9 

### Ran k

28 9 27 7 27 2 27 8 28 0 286 29 1 29 0 28 7 295 28 8 28 2 28 3 28 4 27 6 29 8 30 5 30 9 30 4 29 9 29 6 30 6 30 1 31 0 31 4 307 30 8 29 2 29 3 29 4 31 1 31 2 30 2 30 3 31 3 31 6 31 8 32 2 320 31 7 32 3 32 1 32 7 33 2 331 32 9 

### Prob

. o f Non

- Exceed

.

0.2 1 0.2 5 0.2 6 0.2 4 0.2 4 0.2 2 0.2 1 0.2 1 0.2 2 0.20 0.2 2 0.2 3 0.2 3 0.2 3 0.2 5 0.1 9 0.1 7 0.1 6 0.1 7 0.1 9 0.1 9 0.1 7 0.18 0.1 6 0.1 4 0.1 6 0.16 0.2 0 0.2 0 0.2 0 0.15 0.15 0.18 0.1 7 0.1 5 0.1 4 0.13 0.1 2 0.1 3 0.14 0.1 2 0.1 3 0.1 1 0.1 0 0.10 0.1 0 

### Probabilit y o f Occurrenc e

0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7



### File : StatSig.xl s Sheet : A s Summar y Pag e 3 o f 8 

# I I 

# I I I I 

# I I I 

# I I I 

# I I 

# I I 

# I I 

# I

# CO M Midval e Slag OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Arseni c Concentration s i n th e Jorda n Rive r based o n Mea n o f Dail y Mea n Flo w Groun d Water/Surfac e Wate r Mixin g Parameter s 

## Groun d wate r flo w rat e = 0.31 cf s Averag e groun d wate r concentratio n = 287 0 ug/ l Averag e surfac e wate r concentratio n = 1 1 ug/ l 

## Ma x = M in = 16.5 1 12.5 9

Mont h

5 5 5 5 5 5 5 5 5 5 5 5 5 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 

### 6 6 6 6 6 6 6 6 6 6 6 6 6 

### 6 6 7 7 7 

### Da y

1 9 2 0 21 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 

### 3 1 1 2 

### 3 4 

### 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 1 2 3 

### Mea n Flo w 

### Rat e - D G (cfs)

72 0 73 6 78 4 82 9 80 7 81 4 

### 82 0 83 9 84 3 85 1 86 3 88 0 88 8 89 9 89 8 

### 90 3 90 2 

### 91 6 90 6 91 0 90 9 

### 88 9 89 0 87 6 85 7 86 5 86 4 84 2 82 6 

### 81 9 78 8 77 1 75 0 74 5 74 5 71 9 70 5 71 6 69 1 67 6 66 3 64 2 62 5 60 4 598 57 9 

### Mea n Flo w 

### Rat e - U G (cfs)

404. 7 417. 2 454. 8 490. 0 472. 8 478. 2 482. 9 497. 8 

### 500. 9 507. 2 516. 6 529. 9 

### 536. 1 544. 7 544. 0 547. 9 547. 1 

### 558. 1 550. 2 553. 4 552. 6 

### 536. 9 537. 7 526. 8 511. 9 

### 518. 1 517. 4 500. 1 487. 6 482. 1 457. 9 444. 6 428. 2 424. 2 424. 2 403. 9 392. 9 401. 6 382. 0 370. 3 360. 1 343. 6 330. 3 313. 9 309. 2 294. 3 

### Mixe d Cone

, 

### (ug/l )

13.19 

### 13.12 12.95 12.8 1 12.8 7 12.85 12.8 3 12.7 8 12.7 7 12.7 5 12.71 12.6 7 12.6 5 12.6 3 12.6 3 12.6 2 12.6 2 

### 12.5 9 12.6 1 12.6 0 12.6 0 

### 12.6 5 12.6 5 12.6 8 12.7 3 12.7 1 12.71 12.7 7 12.8 2 12.8 4 12.9 3 12.9 9 13.0 7 13.0 9 13.0 9 13.19 13.25 13.2 1 13.3 2 13.3 9 13.4 6 13.5 8 13.6 8 

### 13.8 2 13.8 6 14.0 1 

### Ran k

33 0 33 3 33 8 34 5 34 0 34 1 34 3 34 6 34 8 34 9 35 1 35 5 

### 35 6 36 0 

### 35 9 36 2 36 1 36 6 36 3 36 5 36 4 

### 35 7 35 8 

### 35 4 35 0 

### 35 3 35 2 34 7 34 4 

### 34 2 33 9 

### 33 7 33 6 33 4 33 5 32 8 32 5 32 6 32 4 31 9 31 5 29 7 28 5 

### 26 8 26 1 23 8 

### Prob

. o f Non

- 

### Exceed

.

0.10 0.0 9 0.0 8 0.0 6 0.0 7 0.0 7 0.0 7 0.0 6 0.0 5 0.0 5 0.0 4 0.0 3 0.0 3 0.0 2 0.0 2 0.0 1 0.0 2 0.0 0 0.0 1 0.0 1 0.0 1 0.0 3 0.0 2 0.0 4 0.0 5 0.0 4 0.0 4 0.0 5 0.0 6 0.0 7 0.0 8 0.0 8 0.0 8 0.0 9 0.0 9 0.1 1 0.1 1 0.1 1 0.1 2 0.1 3 0.1 4 0.1 9 0.2 2 0.2 7 0.2 9 0.3 5 

### Probabilit y o f 

### Occurrence

0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 

### 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 

### 0.002 7 0.002 7 0.002 7 0.002 7 

### 0.002 7 0.002 7 0.002 7 0.002 7 •0.0027 0.002 7 0.0027 ! 0.002 7 0.0027 0.0027 1

0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7



### File : StatSig.xl s Sheet : A s Summar y 

### Pag e 4 o f 8

# CO M Midval e Slag OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Arseni c Concentration s in th e Jorda n River based o n Mea n o f Dail y Mea n Flo w 

## Groun d Water/Surfac e Wate r Mixin g Parameter s Groun d wate r flo w rat e = 0.3 1 cf s 

## Averag e groun d wate r concentratio n = 287 0 ug/ l Averag e surfac e wate r concentratio n = 1 1 ug/ l Ma x = M in = 16.5 1 12.5 9

Mont h

7 7 7 7 7 7 7 7 7 7 7 7



## r 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 8 8 8 8 8 8 8 8 8 3 8 8 8 8 8 8 8 8 

### Da y

4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 1 

### 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 

### Mea n Flo w Rat e - D G (cfs)

56 7 57 5 

### 55 1 53 5 53 3 53 8 53 5 523 51 9 512 49 4 49 4 49 0 49 4 48 5 48 0 47 5 47 6 48 5 50 1 50 3 50 2 49 9 48 0 47 7 47 0 46 1 46 3 45 6 44 9 43 6 43 4 44 2 42 8 42 0 41 6 41 4 40 9 41 7 410 41 6 41 1 416 42 3 421 42 8 

### Mea n Flo w Rat e - U G (cfs)

285. 0 291. 2 272. 4 259. 9 258. 4 262. 3 259. 9 250. 5 247. 4 241. 9 227. 8 227. 8 224. 7 227. 8 

### 220. 8 216. 9 213. 0 

### 213. 8 220. 8 

### 233. 3 234. 9 234. 1 231. 7 216. 9 214. 5 209. 1 202. 0 203. 6 198. 1 192. 6 182. 5 180. 9 187. 1 176. 2 169. 9 166. 8 165. 2 161. 3 167. 6 162. 1 166. 8 162. 9 166. 8 172. 3 170. 7 176. 2 

### Mixe d Cone

, 

### (ug/l )

14.1 1 14.0 4 14.2 5 14.4 1 14.4 3 14.3 8 14.4 1 14.5 3 14.5 8 14.6 6 14.88 14.8 8 14.9 4 14.8 8 15.0 1 15.0 8 15.1 6 15.1 4 15.0 1 14.7 9 14.7 7 14.7 8 14.8 2 15.0 8 15.1 3 15.2 3 15.3 8 15.3 5 15.4 7 15.5 9 15.8 5 15.8 9 15.7 3 16.0 2 16.2 1 16.3 0 16.3 5 16.4 8 16.2 8 16.4 6 16.3 0 16.4 3 16.3 0 16.1 4 16.1 8 16.0 2 

### Ran k

22 4 22 8 

### 22 1 21 4 212 21 7 21 5 20 8 20 6 20 5 19 0 19 1 18 7 19 2 17 8 17 4 16 6 16 8 17 9 198 20 3 20 1 196 17 5 17 0 16 0 14 2 14 7 13 4 10 8 5 4 5 1 7 2 4 1 2 5 1 4 8 2 2 0 4 1 5 5 1 6 3 5 2 7 4 2 

### Prob

. o f Non

- Exceed

.

0.3 9 0.3 8 0.4 0 0.4 2 0.4 2 0.4 1 0.4 1 0.4 3 0.4 4 0.4 4 0.4 8 0.4 8 0.4 9 0.4 8 0.5 1 0.5 3 0.5 5 0.5 4 0.5 1 0.4 6 0.4 5 0.4 5 0.4 7 0.5 2 0.5 4 0.5 6 0.6 1 0.6 0 0.6 3 0.7 1 0.8 5 0.8 6 0.8 0 0.8 9 0.9 3 0.96 0.9 8 0.9 9 0.9 5 0.9 9 0.9 6 0.9 9 0.9 6 0.9 0 0.9 3 0.8 9 

### Probabilit y o f Occurrence

0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7



### File : StatSig.xls 

### Sheet : A s Summar y Pag e 5 o f 8 

# I I 

# I I I I 

# I I I 

# I 

# I I 

# I I I I I I 

# I

# CO M Midval e Slag OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Arseni c Concentration s i n th e Jorda n Rive r based o n Mea n o f Dail y Mea n Flo w Groun d Water/Surfac e Wate r Mixin g Parameter s 

## Groun d wate r flo w rat e = 0.3 1 cf s Averag e groun d wate r concentratio n = 287 0 ug/ l Averag e surfac e wate r concentratio n = 1 1 ug/ l Ma x = M in = 16.5 1 12.5 9

Mont h

8 & 8 8 8 8 8 8 8 8 8 8 8 9 9 9 9 9 9 9 

### 9 9 9 9 

### 9 9 9 9 9 

### 9 9 9 

### 9 9 9 9 9 9 9 9 9 9 9 1 0 1 0 1 0 

### Da y

1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 

### 3 1 1 2 

### 3 4 

### 5 6 7 8 9 1 0 1 1 1 2

L

_ 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 1 2 3 

### Mea n Flo w 

### Rat e - D G (cfs )

44 0 44 0 44 3 44 0 42 7 421 42 1 42 2 42 2 41 6 41 5 41 2 41 9 40 8 41 4 421 42 1 42 6 44 6 44 0 44 6 44 2 45 2 45 4 44 7 43 8 43 1 42 8 42 5 42 7 44 6 44 5 43 5 43 9 441 45 7 44 3 45 0 45 6 46 7 46 1 44 7 45 1 45 4 45 0 45 7 

### Mea n Flo w 

### Rat e - U G (Cfs)

185. 6 185. 6 187. 9 185. 6 175. 4 170. 7 170. 7 171. 5 171. 5 166. 8 166. 0 163. 7 169. 1 160. 5 165. 2 170. 7 170. 7 174. 6 190. 3 185. 6 

### 190. 3 187. 1 195. 0 196. 5 

### 191. 1 184. 0 178. 5 176. 2 173. 8 175. 4 190. 3 189. 5 181. 7 184. 8 186. 4 198. 9 187. 9 193. 4 198. 1 206. 7 202. 0 191. 1 194. 2 196. 5 193. 4 198. 9 

### Mixe d Cone

. 

# (ug/i)

15.7 7 15.7 7 15.7 1 15.7 7 16.0 4 16.1 8 16.1 8 16.1 6 

### 16.1 6 16.3 0 16.3 3 16.4 0 

### 16.23 16.5 1 16.3 5 16.1 8 16.1 8 16.0 7 15.6 5 15.7 7 15.6 5 15.7 3 15.54 15.5 0 15.6 3 15.8 1 15.96 16.0 2 16.0 9 16.0 4 15.6 5 15.6 7 15.8 7 15.7 9 15.7 5 15.45 15.7 1 15.5 8 15.4 7 15.2 8 

### 15.3 8 15.6 3 15.5 6 

### 15.5 0 15.5 8 15.45 

### Ran k

6 1 6 2 8 0 6 3 3 9 2 8 2 9 3 2 3 3 1 7 1 0 6 2 2 1 

### 9 3 0 3 1 3 7 8 8 6 4 8 9 7 3 12 2 12 8 9 5 5 7 4 4 4 3 3 6 4 0 9 0 8 4 5 2 5 9 6 8 136 8 1 11 3 13 5 15 4 14 3 9 6 11 8 12 9 11 4 13 7 

### Prob

. o f Non

- 

### Exceed

.

0.8 3 0.8 3 0.7 8 0.8 3 0.8 9 0.9 2 0.9 2 0.9 1 0.9 1 0.9 5 0.97 0.9 8 0.9 4 1.0 0 

### 0.9 8 0.9 2 0.9 2 

### 0.9 0 0.7 6 0.8 3 0.7 6

. 0.8 0 0.6 7 0.6 5 0.7 4 0.8 4 0.8 8 0.8 8 0.9 0 

### 0.8 9 0.7 5 0.7 7 

### 0.8 6 0.8 4 0.81 0.6 3 0.7 8 0.6 9 0.6 3 0.5 8 0.6 1 0.7 4 0.6 8 

### 0.6 5 0.6 9 0.6 3 

### Probabilit y o f 

### Occurrence

0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7



### File : StatSig.xl s 

### Sheet : A s Summar y Pag e 6 o f 8

# CO M Midval e Slag OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Arseni c Concentration s i n th e Jorda n Rive r base d o n Mea n o f Dail y Mea n Flo w 

## Groun d Water/Surfac e Wate r Mixin g Parameter s Groun d water flo w rat e = 0.3 1 cf s 

## Averag e groun d wate r concentratio n = 287 0 ug/ l Averag e surfac e wate r concentratio n = 1 1 ug/ l Ma x = M in = 16.5 1 12.5 9

Mont h

1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 

## 1 1 1 1 1 1 1 1 1 1 1 1 

## 1 1 1 1 1 1 1 1 1 1 11 1 1 

## 1 1 1 1 

## 1 1 1 1 

## 1 1 Da y

4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 21 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 

### Mea n Flo w Rat e - D G 

### (cfs)

45 7 45 0 44 8 46 2 46 1 45 0 45 4 45 8 46 3 45 2 46 4 46 5 45 5 42 6 41 9 42 2 42 0 41 5 41 9 41 2 41 5 40 9 41 7 431 415 41 6 43 2 43 8 43 1 44 3 431 41 6 43 2 43 2 43 5 44 6 44 0 43 9 44 0 44 2 44 2 44 4 44 2 44 1 43 7 44 1 

### Mea n Flo w Rat e - U G 

### (cfs)

198. 9 193. 4 191. 8 202. 8 202. 0 193. 4 196. 5 199. 7 203. 6 195. 0 204. 4 205. 1 197. 3 174. 6 169. 1 171. 5 169. 9 166. 0 169. 1 163. 7 166. 0 161. 3 167. 6 178. 5 166. 0 166. 8 179. 3 184. 0 178. 5 187. 9 178. 5 166. 8 179. 3 179. 3 181. 7 190. 3 185. 6 184. 8 185. 6 187. 1 187. 1 188. 7 187. 1 186. 4 183. 2 186. 4 

### Mixe d Cone

, (ug/l )

15.4 5 15.5 8 15.6 1 15.3 6 15.3 8 15.5 8 15.5 0 15.4 3 15.35 15.54 15.33 15.3 1 15.4 8 16.0 7 16.2 3 16.1 6 16.2 1 16.33 16.23 16.4 0 16.33 16.4 8 16.2 8 15.9 6 16.33 16.3 0 15.9 3 15.8 1 15.9 6 15.7 1 15.9 6 16.3 0 15.9 3 15.93 15.8 7 15.6 5 15.77 15.7 9 15.7 7 15.7 3 15.7 3 15.6 9 15.7 3 15.7 5 15.83 15.7 5 

### Ran k

13 8 11 5 10 2 14 5 14 4 11 6 130 14 0 14 8 123 15 0 15 2 13 2 3 8 2 3 3 4 2 6 1 1 2 4 7 1 2 3 2 1 4 5 1 3 1 8 4 8 5 8 4 6 8 2 4 7 1 9 4 9 5 0 5 3 9 1 6 5 6 0 6 6 7 4 7 5 8 3 7 6 6 9 5 6 7 0 

### Prob

. o f Non

- Exceed

.

0.6 2 0.6 9 0.7 2 0.6 0 0.6 1 0.6 8 0.6 5 0.6 2 0.6 0 0.6 6 0.5 9 0.5 9 0.6 4 0.9 0 0.9 4 0.9 1 0.9 3 0.9 7 0.9 3 0.9 8 0.9 7 0.9 9 0.9 4 0.8 8 0.9 6 0.9 5 0.8 7 0.8 4 0.87 0.7 8 0.8 7 0.9 5 0.87 0.8 6 0.8 6 0.7 5 0.8 2 0.8 4 0.8 2 0.8 0 0.8 0 0.7 7 0.7 9 0.8 1 0.8 5 0.8 1 

### Probabilit y o f Occurrenc e

0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7



### File : StatSig.xls Sheet : A s Summar y Pag e 7 o f 8 

# I I 

# I I 

# I I 

# I I I 

# I 

# I I 

# I I 

# I I 

# I I I

# CO M Midval e Sla g OU 2 3282-986-FSZ-DGRC

Z Estimate d Arseni c Concentration s i n th e Jorda n Rive r base d o n Mea n o f Dail y Mea n Flo w 

## Groun d Water/Surfac e Wate r Mixin g Parameter s Groun d water flo w rat e = 0.31 cf s 

## Averag e groun d wate r concentratio n = 287 0 ug/ l Averag e surfac e wate r concentratio n = 1 1 ug/ l M ax

=16.5 1 

## Min

= 12.5 9

Mont h

11 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 2 1 2 

### 1 2 1 2 

### 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 

### Da y

1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 

### 2 8 2 9 

### 3 0 1 2 

### 3 4 5 6 7 8 9 1 0 1 1 

### 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 

### Mea n Flo w Rat e - D G 

### (cfs)

44 1 43 6 44 0 44 2 44 2 44 5 45 0 44 2 44 8 44 9 44 8 44 7 44 8 44 7 44 5 45 1 44 5 44 7 45 1 45 2 44 8 44 8 45 5 44 9 45 2 44 9 45 7 45 3 44 9 44 7 44 7 44 6 44 6 44 6 45 1 45 4 45 3 45 9 46 3 46 2 46 4 47 6 47 4 

### Mea n Flo w Rat e - U G 

### (cfs)

186. 4 182. 5 185. 6 187. 1 187. 1 189. 5 193. 4 187. 1 191. 8 192. 6 191. 8 191. 1 191. 8 191. 1 

### 189. 5 194. 2 189. 5 191. 1 194. 2 195. 0 191. 8 191. 8 197. 3 192. 6 195. 0 

### 192. 6 198. 9 195. 8 192. 6 191. 1 191. 1 190. 3 

### 190. 3 190. 3 194. 2 196. 5 195. 8 200. 4 203. 6 202. 8 204. 4 213. 8 212. 2 

### Mixe d Cone

, 

### (ug/l )

15.7 5 15.8 5 15.7 7 15.7 3 15.7 3 15.6 7 15.5 8 15.7 3 15.6 1 15.5 9 15.6 1 15.6 3 15.6 1 15.6 3 15.6 7 15.5 6 15.6 7 15.6 3 15.5 6 15.5 4 15.61 15.61 15.4 8 15.5 9 15.5 4 15.5 9 15.4 5 15.5 2 15.5 9 15.6 3 15.6 3 15.6 5 15.6 5 15.6 5 15.5 6 15.5 0 15.5 2 15.4 1 15.3 5 15.36 15.33 15.1 4 15.1 7 

### Ran k

7 1 5 5 6 7 7 7 7 8 8 5 11 7 7 9 10 3 10 9 10 4 

### 9 7 10 5 9 8 8 6 11 9 8 7 

### 9 9 120 12 4 10 6 10 7 

### 13 3 11 0 12 5 1 1 1 13 9 12 6 1 1 2 10 0 10 1 9 2 

### 9 3 9 4 12 1 13 1 12 7 14 1 14 9 14 6 15 1 16 9 16 5 

### Prob

. o f Non

- Exceed

.

0.8 1 0.8 5 0.8 2 0.7 9 0.7 9 0.7 7 0.6 8 0.7 8 0.7 2 0.7 0 0.7 2 0.7 4 0.7 1 0.7 3 0.7 7 0.6 8 0.7 6 0.7 3 0.6 7 0.6 6 0.7 1 0.7 1 0.6 4 0.7 0 0.6 6 0.7 0 0.6 2 0.6 6 0.6 9 

### 0.7 3 0.7 2 0.7 5 0.7 5 0.7 4 0.6 7 0.6 4 0.6 5 0.6 2 0.5 9 0.6 0 0.5 9 0.5 4 0.5 5 

### Probabilit y o f Occurrence

0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7



### File : StatSig.xl s 

### Sheet : A s Summar y 

### Pag e 8 o f 8

## 60

0

55. 0 

## Estimate d

Mea n o f Mea n Dail y Flo w Rate s an d Predicte d Cadmiu m Concentration s i n th e Jorda n Rive r wit h Groundwate r Discharg e a t 156 0 ug/ l Midval e Slag OU 2 

## Jorda n Rive r Mea n Flo w C d Concentratio n

100 0.0 0

C D

File : StatSig.xl s Page : C d Cone

. & Flo w 9/24/200 2 Pag e 1 o f 1

## Estimate d Cadmiu m Concentration s i n th e Jorda n Rive r a t Mea n Dail y Flo w Rat e Probabilit y o f Non-Exceedanc e wit h Groundwate r Discharg e a t 156 0 ug/ l

an d Upstrea m Concentratio n a t 0. 9 ug/ l

1.00

0.9 0

0.10

0.0 0 1.0 0 1.1 0 1.2 0 1.3 0 1.4 0 

## Concentratio n (ug/l ) 1.5

0 1.6

0 1.7

0

File : StatSig.xls Page : C d Prob

. 9/24/200 2 Pag e 1 o f 1

# CO M Midval e Slag OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Cadmiu m Concentration s i n th e Jorda n Rive r base d o n Mea n o f Dail y Mea n Flo w Groun d Water/Surfac e Wate r Mixin g Parameter s Groun d wate r flo w rat e = 0.07 2 cf s Averag e groun d wate r concentratio n = 156 0 ug/ l Averag e surfac e wate r concentratio n = 0. 9 ug/ l Ma x = M in = 1.6 0 1.1 0

Mont h

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 

### Da y

1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 

### 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 1 

### 2 3 4 5 6 7 8

• 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 

### Mea n Flo w 

### Rat e - D G (cfs)

47 0 47 4 47 6 46 7 47 1 47 0 46 8 46 9 47 0 47 4 47 9 48 0 481 48 7 48 8 48 7 49 3 48 0 48 1 47 2 48 6 48 8 48 7 48 8 49 4 501 50 3 50 2 49 8 49 7 49 9 50 2 50 6 52 2 52 7 53 1 53 3 53 4 536 54 0 54 3 55 0 56 0 56 7 57 8 57 8 57 6 

### Mean Flo w 

### Rat e - U G (cfs)

209. 1 212. 2 213. 8 206. 7 209. 8 209. 1 207. 5 208. 3 209. 1 212. 2 216. 1 216. 9 217. 7 222. 4 223. 1 222. 4 227. 1 216. 9 217. 7 210. 6 221. 6 223. 1 222. 4 223. 1 227. 8 233. 3 234. 9 234. 1 231. 0 230. 2 231. 7 234. 1 237. 2

- 249. 7 253. 7 256. 8 258. 4 259. 1 260. 7 263. 8 266. 2 271. 7 279. 5 285. 0 293. 6 293. 6 292. 0 

### Mixe d Cone

, 

### (ug/l )

1.4 4 1.43 1.4 2 1.4 4 1.4 3 1.4 4 1.4 4 1.4 4 1.4 4 1.4 3 1.4 2 1.4 2 1.4 2 1.40 1.4 0 1.4 0 1.3 9 1.4 2 1.4 2 1.4 3 1.4 1 1.4 0 1.4 0 1.4 0 1.3 9 1.3 8 1.3 8 1.3 8 1.3 9 1.3 9 1.3 8 1.3 8 1.3 7 1.35 1.3 4 1.3 4 1.3 3 1.3 3 1.3 3 1.3 3 1.3 2 1.3 1 1.30 1.2 9 1.28 1.2 8 1.28 

### Ran k

15 7 16 3 16 7 15 3 16 1 15 8 15 5 15 6 15 9 16 4 171 17 2 17 6 18 1 18 4 18 2 18 8 17 3 17 7 16 2 18 0 18 5 18 3 186 18 9 19 7 20 2 19 9 19 4 19 3 19 5 20 0 

### 20 4 20 7 20 9 21 0 21 1 21 3 21 6 21 8 219 22 0 22 2 22 3 23 1 23 2 22 9 

### Prob

. o f Non

- 

### Exceed

.

0.5 7 0.5 6 0.5 4 0.5 8 0.5 6 0.5 7 0.5 8 0.5 7 0.5 7 0.5 5 0.5 3 0.5 3 0.5 2 0.5 1 0.5 0 0.5 0 0.4 9 0.5 3 0.5 2 0.5 6 0.5 1 0.5 0 0.5 0 0.4 9 0.4 9 0.46 0.4 5 0.4 6 0.47 0.47 0.47 0.4 6 0.4 4 0.4 4 0.4 3 0.4 3 0.4 3 0.4 2 0.4 1 0.4 1 0.4 0 0.4 0 0.4 0 0.3 9 0.3 7 0.37 0.3 8 

### Probabilit y o f Occurrenc e

0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7



### File : StatSig.xl s 

### Sheet : C d Summar y Pag e 1 o f 8 

# I I 

# I I 

# I 

# I I I I I 

# I I 

# I I 

# I I 

# I I I

# CO M Midval e Sla g OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Cadmiu m Concentration s i n th e Jorda n Rive r base d o n Mea n o f Dail y Mea n Flo w 

## Groun d Water/Surfac e Wate r Mixin g Parameter s Groun d wate r flo w rat e = 

## Averag e groun d wate r concentratio n = Averag e surfac e wate r concentratio n = 0.07

2 cf s 156 0 ug/ l 0. 9 ug/ l 

## Max

=

1.6 0 Min

= 1.1 0

Mont h

2 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 

### 3 3 3 

### 3 3 3 3 3 3 

### 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 4 4 

### Da y

1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 1 

### 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 

### 3 1 1 2 

### Mea n Flo w Rat e - D G 

### (cfs )

57 8 58 9 587 58 5 58 8 60 1 59 6 60 0 60 0 

### 59 7 60 0 

### 59 8 59 9 58 9 58 2 

### 58 7 58 1 58 3 587 57 8 

### 58 0 59 1 58 6 

### 587 58 4 

### 57 8 58 3 58 3 57 9 

### 58 1 57 8 57 7 57 4 57 3 57 4 593 60 4 61 5 61 4 61 7 62 4 61 2 61 0 61 3 62 2 647 

### Mea n Flo w Rat e - U G (Cfs )

293. 6 302. 2 300. 6 299. 0 301. 4 311. 6 307. 7 310. 8 310. 8 308. 4 310. 8 309. 2 310. 0 302. 2 296. 7 

### 300. 6 295. 9 297. 5 

### 300. 6 293. 6 

### 295. 1 303. 7 

### 299. 8 300. 6 298. 3 

### 293. 6 297. 5 297. 5 294. 3 

### 295. 9 293. 6 292. 8 

### 290. 4 289. 7 290. 4 305. 3 313. 9 322. 5 321. 7 324. 1 329. 6 320. 2 318. 6 321. 0 328. 0 347. 6 

### Mixe d Cone. 

### (ug/l )

1.2 8 1.2 7 1.2 7 1.2 8 1.2 7 1.2 6 1.26 1.2 6 

### 1.2 6 1.2 6 1.2 6 1.2 6 1.2 6 1.27 1.2 8 1.2 7 1.2 8 1.2 8 1.2 7 1.2 8 1.28 1.2 7 1.2 7 1.2 7 1.2 8 1.2 8 1.2 8 1.2 8 1.2 8 

### 1.2 8 1.2 8 1.2 8 

### 1.2 9 1.2 9 1.2 9 1.2 7 

### 1.2 6 1.2 5 1.25 1.2 5 1.2 4 1.25 1.2 5 1.2 5 1.2 4 1.2 2 

### Ran k

23 3 25 4 24 9 247 25 3 26 6 25 8 

### 26 3 26 4 25 9 26 5 26 0 26 2 25 5 24 2 25 0 24 0 24 3 25 1 23 4 23 9 25 6 24 8 25 2 24 6 23 5 24 4 24 5 23 7 24 1 23 6 230 22 6 22 5 22 7 25 7 26 7 27 4 27 3 27 5 28 1 27 0 26 9 27 1 27 9 30 0 

### Prob

. o f Non

- Exceed

.

0.3 7 0.3 1 0.3 2 0.3 3 0.31 0.2 8 0.3 0 0.2 8 0.2 8 0.2 9 0.2 8 0.2 9 0.2 9 0.3 1 0.3 4 0.3 2 0.3 5 0.3 4 0.3 2 0.3 6 0.3 5 0.3 0 0.3 2 0.31 0.3 3 

### 0.3 6 0.3 4 0.3 3 0.3 5 0.3 4 0.3 6 0.3 7 0.3 8 0.3 9 0.3 8 0.3 0 0.2 7 0.2 5 0.2 6 0.2 5 0.2 3 0.2 6 0.27 0.2 6 0.2 4 0.18 

### Probabilit y o f Occurrence

0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7



### File : StatSig.xls 

### Sheet : C d Summar y 

### Pag e 2 o f 8

# CO M Midval e Slag OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Cadmiu m Concentration s i n th e Jorda n Rive r base d o n Mea n o f Dail y Mea n Flo w Groun d Water/Surfac e Wate r Mixin g Parameter s Groun d wate r flo w rat e = 0.07 2 cf s Averag e groun d wate r concentratio n = 156 0 ug/ l Averag e surfac e wate r concentratio n = 0. 9 ug/ l Ma

x = M in = 1.6 0 1.1 0

Mont h

4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 

### Da y

3 4 5 6 7 

### 8 9 1 0 1 1 1 2 1 3

1 4 1 5 1 6 17 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 

### Mea n Flo w Rat e - D G (cfs)

63 1 619 61 3 620 62 2 62 7 63 2 63 1 62 9 63 5 

### 62 9 62 4 62 4 62 4 61 7 64 3 65 0 65 4 64 8 64 5 63 9 65 0 647 65 4 66 3 65 0 65 3 63 2 63 3 63 4 65 5 65 7 647 647 65 8 67 2 67 4 68 4 68 3 67 3 68 5 68 3 71 8 73 6 73 5 720 

### Mea n Flo w Rat e - U G (cfs)

335. 0 325. 6 321. 0 326. 4 328. 0 331. 9 335. 8 335. 0 333. 5 338. 2 333. 5 329. 6 329. 6 329. 6 324. 1 344. 4 349. 9 353. 0 348. 3 346. 0 341. 3 349. 9 347. 6 353. 0 360. 1 349. 9 352. 3 335. 8 336. 6 337. 4 353. 8 355. 4 347. 6 347. 6 356. 2 367. 1 368. 7 376. 5 375. 7 367. 9 377. 3 375. 7 403. 1 417. 2 416. 4 404. 7 

### Mixe d Cone

. 

## (ug/l )

1.2 3 1.2 4 1.2 5 1.2 4 1.2 4 1.2 4 1.2 3 1.2 3 1.2 4 1.2 3 1.2 4 1.2 4 1.2 4 1.2 4 1.2 5 1.23 1.2 2 1.2 2 1.2 2 1.2 2 1.2 3 1.2 2 1.2 2 1.2 2 1.2 1 1.2 2 1.2 2 1.2 3 1.23 1.2 3 1.2 2 1.2 2 1.2 2 1.2 2 1.2 2 1.2 1 1.20 1.20 1.20 1.2 1 1.20 1.2 0 1.1 8 1.1 7 1.1 7 1.1 8 

### Ran k

28 9 27 7 27 2 27 8 28 0 286 29 1 29 0 28 7 29 5 28 8 28 2 28 3 28 4 27 6 298 30 5 30 9 30 4 29 9 29 6 30 6 30 1 310 31 4 30 7 30 8 29 2 293 29 4 31 1 31 2 30 2 30 3 31 3 31 6 31 8 32 2 32 0 31 7 32 3 32 1 32 7 33 2 33 1 32 9 

### Prob

. o f Non

- 

### Exceed

.

0.21 0.2 5 0.2 6 0.2 4 0.2 4 0.2 2 0.2 1 0.2 1 0.2 2 0.2 0 0.2 2 0.2 3 0.2 3 0.2 3 0.2 5 0.1 9 0.1 7 0.1 6 0.1 7 0.1 9 0.1 9 0.1 7 0.1 8 0.16 0.14 0.1 6 0.1 6 0.2 0 0.2 0 0.2 0 0.15 0.1 5 0.18 0.1 7 0.1 5 0.14 0.13 0.1 2 0.13 0.14 0.1 2 0.13 0.1 1 0.1 0 0.1 0 0.1 0 

### Probabilit y o f Occurrence

0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7



### File : StatSig.xls Sheet : C d Summar y Pag e 3 o f 8 

# I 

# I 

# I I I 

# I I I I I 

# I 

# I I I 

# I I 

# I I 1

# CO M Midval e Slag OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Cadmiu m Concentration s i n th e Jorda n Rive r base d o n Mea n o f Dail y Mea n Flo w 

## Groun d Water/Surfac e Wate r Mixin g Parameter s Groun d wate r flo w rat e = 0.07 2 cf s 

## Averag e groun d wate r concentratio n = 156 0 ug/ l Averag e surfac e wate r concentratio n = 0. 9 ug/ l Ma x = 

## Min-

= 1.6 0 1.1 0

Mont h

5 5 5 5 

### 5 5 5 5 

### 5 5 5 5 5 6 6 6 6 6 6 

### 6 6 6 6 6 6 6 6 6 6 

### 6 6 6 6 6 6 6 

### 6 6 6 6 6 6 6 7 7 7 

### Da y

1 9 2 0 2 1 2 2 

### 2 3 2 4 2 5 

### 2 6 2 7 2 8 2 9 3 0 3 1 1 

### 2 3 4 5 6 7 8 9 1 0 1 1 

### 1 2 1 3 1 4 1 5 16 1 7 1 8 1 9 2 0 2 1 

### 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 1 2 

### 3 

### Mea n Flo w Rat e - D G (cfs)

72 0 73 6 78 4 82 9 

### 80 7 81 4 82 0 

### 83 9 84 3 85 1 86 3 88 0 88 8 

### 89 9 89 8 90 3 90 2 91 6 90 6 91 0 

### 90 9 88 9 

### 89 0 87 6 85 7 86 5 86 4 84 2 826 

### 81 9 78 8 77 1 75 0 74 5 74 5 71 9 70 5 71 6 69 1 67 6 66 3 64 2 625 60 4 59 8 57 9 

### Mea n Flo w 

### Rat e - U G (cfs )

404. 7 417. 2 454. 8 490. 0 

### 472. 8 478. 2 482. 9 497. 8 500. 9 507. 2 516. 6 

### 529. 9 536. 1 544. 7 544. 0 547. 9 547. 1 558. 1 550. 2 553. 4 552. 6 536. 9 537. 7 526. 8 511. 9 518. 1 517. 4 500. 1 487. 6 

### 482. 1 457. 9 444. 6 428. 2 424. 2 424. 2 403. 9 392. 9 401. 6 382. 0 370. 3 360. 1 343. 6 330. 3 313. 9 309. 2 294. 3 

### Mixe d Cone

, 

### (ug/l )

1.18 1.1 7 1.1 5 1.1 3 1.1 4 1.1 3 1.1 3 1.1 3 

### 1.1 2 1.12 1.12 1.1 1 1.1 1 1.1 1 1.1 1 1.1 0 1.1 1 

### 1.1 0 1.1 0 1.1 0 1.1 0 1.1 1 1.1 1 1.1 1 1.1 2 1.12 1.12 1.12 1.13 

### 1.1 3 1.1 5 1.1 5 1.1 6 1.1 6 1.1 6 1.1 8 1.19 1.1 8 1.1 9 1.20 1.2 1 1.2 3 1.2 4 1.2 6 1.2 6 1.2 8 

### Ran k

33 0 33 3 33 8 34 5 34 0 34 1 34 3 34 6 34 8 34 9 35 1 35 5 35 6 36 0 35 9 36 2 36 1 36 6 36 3 36 5 36 4 35 7 35 8 35 4 35 0 35 3 35 2 34 7 34 4 

### 34 2 33 9 33 7 33 6 33 4 33 5 32 8 32 5 326 32 4 319 31 5 29 7 28 5 26 8 

### 26 1 23 8 Prob

. o f Non

- 

### Exceed

.

0.10 0.0 9 0.0 8 0.0 6 0.0 7 0.0 7 0.0 7 

### 0.0 6 0.0 5 0.0 5 0.0 4 0.0 3 0.0 3 0.0 2 0.0 2 0.01 0.0 2 0.0 0 0.0 1 0.01 0.01 0.0 3 0.0 2 0.0 4 0.0 5 0.0 4 0.0 4 0.0 5 0.0 6 0.0 7 0.0 8 0.0 8 0.0 8 0.0 9 0.0 9 0.1 1 0.1 1 0.1 1 0.1 2 0.13 0.1 4 0.1 9 0.2 2 0.27 0.2 9 0.3 5 

### Probabilit y o f 

### Occurrence

0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7



### File : StatSig.xls Sheet : C d Summar y 

### Pag e 4 o f 8

# CO M Midval e Slag OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Cadmiu m Concentration s i n th e Jorda n Rive r based o n Mea n o f Dail y Mea n Flo w Groun d Water/Surfac e Water Mixin g Parameter s 

## Groun d wate r flo w rat e = Averag e groun d wate r concentratio n = Averag e surfac e wate r concentratio n = 0.07

2 cf s 156 0 ug/ l 0. 9 ug/ l Max

=

1.6 0 M in = 1.1 0

Mont n

7 7 7 7 7 7 7 7 7 7 7

7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 

### Da y

4 5 6 7 

### 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 1 2 3 4 5 6 7 

### 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 

### Mea n Flo w 

### Rat e - D G (cfs)

56 7 57 5 55 1 53 5 53 3 53 8 53 5 52 3 51 9 51 2 49 4 49 4 49 0 49 4 48 5 48 0 47 5 47 6 48 5 50 1 50 3 50 2 49 9 48 0 47 7 47 0 46 1 46 3 45 6 44 9 43 6 43 4 44 2 42 8 42 0 41 6 414 40 9 41 7 41 0 41 6 41 1 41 6 42 3 42 1 42 8 

### Mea n Flo w 

### Rat e - U G (cfs )

285. 0

. 291. 2 272. 4 259. 9 258. 4 262. 3 259. 9 250. 5 247. 4 241. 9 227. 8 227. 8 224. 7 227. 8 220. 8 216. 9 213. 0 h 213. 8 220. 8 233. 3 234. 9 234. 1 231. 7 216. 9 214. 5 209. 1 202. 0 203. 6 198. 1 

### 192. 6 182. 5 180. 9 187. 1 

### 176. 2 169. 9 

### 166. 8 165. 2 161. 3 167. 6 

### 162. 1 166. 8 162. 9 166. 8 

### 172. 3 170. 7 176. 2 Mixe d Cone

, 

### (ug/l )

1.2 9 1.2 9 1.3 1 1.3 3 1.3 3 

### 1.3 3 1.3 3 

### 1.3 5 1.3 5 1.36 1.3 9 1.3 9 1.40 1.3 9 1.4 1 1.4 2 1.43 1.4 2 1.4 1 1.3 8 1.38 1.3 8 1.3 8 1.4 2 1.4 2 1.4 4 1.4 6 1.45 1.4 7 1.4 8 1.5 2 1.5 2 1.5 0 1.5 4 1.5 6 1.5 7 1.5 8 1.6 0 1.5 7 1.5 9 1.5 7 1.5 9 1.57 1.5 5 1.5 6 1.5 4 

### Ran k

22 4 22 8 22 1 21 4 212 21 7 21 5 20 8 20 6 20 5 19 0 19 1 18 7 19 2 17 8 17 4 16 6 16 8 17 9 198 20 3 20 1 19 6 17 5 17 0 16 0 14 2 14 7 13 4 10 8 5 4 5 1 7 2 4 1 2 5 1 4 8 2 2 0 4 1 5 5 1 6 3 5 2 7 4 2 

### Prob

. o f Non

- 

### Exceed

.

0.3 9 0.3 8 0.4 0 0.4 2 0.4 2 0.4 1 0.4 1 0.4 3 0.4 4 0.4 4 0.4 8 0.4 8 0.4 9 0.4 8 

### 0.5 1 0.5 3 0.5 5 0.5 4 0.5 1 0.46 0.4 5 0.4 5 0.47 0.5 2 0.5 4 0.5 6 0.6 1 0.6 0 0.6 3 0.7 1 0.8 5 0.8 6 0.8 0 0.8 9 0.9 3 0.96 0.9 8 0.9 9 0.9 5 0.9 9 0.9 6 0.9 9 0.96 0.9 0 0.9 3 0.8 9 

### Probabilit y o f Occurrenc e

0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7



### File : StatSig.xl s Sheet : C d Summar y 

### Pag e 5 o f 8 

# I 

# I 

# I I 

# I 

# I I I I I 

# I I 

# I I I I 

# I I I

# CO M Midval e Slag OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Cadmiu m Concentration s i n th e Jorda n Rive r base d o n Mea n o f Dail y Mea n Flo w Groun d Water/Surfac e Wate r Mixin g Parameter s Groun d wate r flo w rat e = Averag e groun d wate r concentratio n = Averag e surfac e water concentratio n = 0.07

2 cf s 156 0 ug/ l 0. 9 ug/ l 

## Max

=

1.6 0 Min

= 1.1 0

Mont h

8 8 8 8 8 8 8 8 8 8 8 8 8 9 9 9 9 

### 9 9 9 9 

### 9 9 9 9 9 9 9 9 

## g 9 9 9 9 9 

### 9 9 

### 9 9 9 9 9 9 1 0 1 0 1 0 

### Da y

1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 1 

### 2 3 4 5 

### 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 1 2 3 

### Mea n Flo w 

### Rat e - D G (cfs )

44 0 44 0 44 3 44 0 427 421 42 1 42 2 42 2 41 6 41 5 41 2 41 9 40 8 41 4 421 42 1 42 6 44 6 44 0 44 6 44 2 45 2 45 4 44 7 43 8 431 42 8 42 5 42 7 44 6 44 5 43 5 43 9 44 1 45 7 44 3 45 0 45 6 46 7 46 1 44 7 45 1 45 4 45 0 45 7 

### Mea n Flo w 

### Rat e - U G (cfs)

185. 6 185. 6 187. 9 185. 6 175. 4 170. 7 170. 7 171. 5 171. 5 166. 8 166. 0 163. 7 169. 1 160. 5 165. 2 170. 7 170. 7 174. 6 190. 3 185. 6 190. 3 187. 1 195. 0 196. 5 191. 1 184. 0 178. 5 176. 2 173. 8 175. 4 190. 3 189. 5 181. 7 184. 8 186. 4 198. 9 187. 9 193. 4 198. 1 206. 7 202. 0 191. 1 194. 2 196. 5 193. 4 198. 9 

### Mixe d Cone

, 

### (ufl/l )

1.5 0 1.5 0 1.5 0 1.5 0 1.5 4 1.5 6 1.5 6 1.5 5 1.5 5 1.5 7 1.5 8 1.5 9 1.5 6 1.6 0 1.5 8 1.5 6 1.5 6 1.5 4 1.4 9 1.5 0 1.4 9 1.5 0 1.4 8 1.4 7 1.4 9 1.51 1.5 3 1.5 4 1.5 5 1.5 4 1.4 9 1.4 9 1.5 2 1.51 1.5 0 1.46 1.5 0 1.4 8 1.4 7 1.4 4 1.4 6 1.4 9 1.4 8 1.4 7 1.48 1.4 6 

### Ran k

6 1 6 2 8 0 6 3 3 9 2 8 2 9 

### 3 2 3 3 1 7 1 0 6 2 2 1 

### 9 3 0 

### 3 1 3 7 

### 8 8 6 4 8 9 7 3 12 2 128 9 5 5 7 4 4 4 3 3 6 4 0 9 0 8 4 5 2 5 9 6 8 136 8 1 

### 11 3 13 5 15 4 14 3 9 6 11 8 12 9 11 4 13 7 

### Prob

. o f Non

- Exceed

.

0.8 3 0.8 3 0.7 8 0.8 3 0.8 9 0.9 2 0.9 2 0.91 0.9 1 0.9 5 0.97 0.9 8 0.9 4 1.0 0 0.9 8 0.9 2 0.9 2 0.9 0 0.7 6 0.8 3 0.7 6 0.8 0 0.6 7 0.6 5 0.7 4 0.8 4 0.8 8 0.8 8 0.9 0 

### 0.8 9 0.7 5 0.7 7 0.8 6 0.8 4 0.81

- 0.6 3 0.7 8 0.6 9 0.6 3 0.5 8 0.6 1 0.7 4 0.6 8 0.6 5 0.6 9 0.6 3 

### Probabilit y o f Occurrence

0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7



### File : StatSig.xls 

### Sheet : C d Summar y 

### Pag e 6 o f 8

# CO M Midval e Slag OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Cadmiu m Concentration s i n th e Jorda n Rive r base d o n Mea n o f Dail y Mea n Flo w 

## Groun d Water/Surfac e Wate r Mixing Parameter s Groun d wate r flo w rat e = 0.07 2 cf s Averag e groun d wate r concentratio n = 156 0 ug/ l Averag e surfac e wate r concentratio n = 0. 9 ug/ l M a x = M i n = 1.6 0 1.1 0

Mont h

1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 

## 1 1 1 1 1 1 1 1 1 1 1 1 

## 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 

## 1 1 1 1 

## 1 1 1 1 Da y

4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 1 2 3 4 5 6 7 8 9 

### 1 0 1 1 1 2 

### 1 3 1 4 1 5 1 6 17 1 8 

### Mea n Flo w 

### Rat e - D G (cfs)

45 7 45 0 44 8 46 2 46 1 45 0 45 4 45 8 46 3 45 2 46 4 46 5 45 5 42 6 41 9 42 2 42 0 415 41 9 41 2 415 40 9 41 7 43 1 415 41 6 43 2 43 8 43 1 44 3 43 1 41 6 43 2 43 2 43 5 44 6 44 0 43 9 44 0 44 2 44 2 44 4 44 2 44 1 43 7 44 1 

### Mea n Flo w Rat e - U G 

### (cfs)

198. 9 193. 4 191. 8 202. 8 202. 0 193. 4 196. 5 199. 7 203. 6 195. 0 204. 4 205.1

. 197. 3 174. 6 169. 1 171. 5 169. 9 166. 0 169. 1 163. 7 166. 0 161. 3 167. 6 178. 5 166. 0 166. 8 179. 3 184. 0 178. 5 187. 9 178. 5 166. 8 179. 3 179. 3 181. 7 190. 3 185. 6 184. 8 185. 6 187. 1 187. 1 188. 7 187. 1 186. 4 183. 2 186. 4 

### Mixe d Cone

, 

## (ug/l )

1.4 6 1.4 8 1.4 8 '1.4 5 1.4 6 1.4 8 1.4 7 1.4 6 1.4 5 1.4 8 1.4 5 1.45 1.4 7 1.5 4 1.5 6 1.5 5 1.5 6 1.5 8 1.5 6 1.5 9 1.5 8 1.6 0 1.57 1.5 3 1.5 8 1.57 1.5 3 1.5 1 1.5 3 1.5 0 1.5 3 1.57 1.5 3 1.5 3 1.5 2 1.4 9 1.5 0 1.5 1 1.5 0 1.5 0 1.5 0 1.4 9 1.5 0 1.5 0 1.5 1 1.5 0 

### Ran k

13 8 1 1 5 10 2 14 5 14 4 11 6 13 0 14 0 14 8 123 15 0 15 2 13 2 3 8 2 3 3 4 2 6 1 1 2 4 7 1 2 3 21 4 5 1 3 1 8 4 8 5 8 4 6 8 2 4 7 1 9 4 9 5 0 5 3 9 1 6 5 6 0 6 6 7 4 7 5 8 3 7 6 6 9 5 6 7 0 

### Prob

. o f Non

- Exceed

.

0.6 2 0.6 9 0.7 2 0.6 0 0.6 1 0.6 8 0.6 5 0.6 2 0.6 0 0.6 6 0.5 9 0.5 9 0.6 4 0.90 0.9 4 0.9 1 0.9 3 0.9 7 0.9 3 0.9 8 0.9 7 0.9 9 0.9 4 0.8 8 0.96 0.9 5 0.8 7 0.8 4 0.87 0.7 8 0.87 0.9 5 0.87 0.8 6 0.8 6 0.7 5 0.8 2 0.8 4 0.8 2 0.8 0 0.8 0 0.7 7 0.7 9 0.8 1 0.8 5 0.81 

### Probabilit y o f Occurrence

0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7



### File : StatSig.xls 

### Sheet : C d Summar y Pag e 7 o f 8 

# I 

# I I I I 

# I I I 

# I I 

# I I 

# I I I I 

# I I I

# CO M Midval e Sla g OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Cadmiu m Concentration s i n th e Jorda n Rive r base d o n Mea n o f Dail y Mea n Flo w 

## Groun d Water/Surfac e Wate r Mixin g Parameter s 

## Groun d wate r flo w rat e = 

## Averag e groun d wate r concentratio n = Averag e surfac e wate r concentratio n = 0.07

2 cf s 

## 156 0 ug/ l 0. 9 ug/ l Max

=

1.6 0 

## Min

= 1.1 0

Mont h

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 

### 1 2 1 2 1 2 1 2 1 2 

### 1 2 1 2 

### 1 2 1 2 1 2 

### 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 

### Da y

1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 1 2 3 4 5 6 7 

### 8 9 

### 1 0 1 1 1 2 

### 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 

### Mea n Flo w 

### Rat e - D G (cfs)

441 43 6 44 0 44 2 44 2 44 5 45 0 44 2 44 8 44 9 44 8 44 7 44 8 44 7 44 5 45 1 44 5 44 7 45 1 45 2 44 8 44 8 45 5 44 9 45 2 44 9 45 7 45 3 44 9 44 7 44 7 44 6 44 6 44 6 45 1 45 4 45 3 45 9 46 3 46 2 46 4 47 6 47 4 

### Mea n Flo w 

### Rat e - U G (cfs)

186. 4 182. 5 

### 185. 6 187. 1 187. 1 189. 5 193. 4 187. 1 191. 8 192. 6 191. 8 191. 1 191. 8 191. 1 189. 5 194. 2 189. 5 191. 1 194. 2 195. 0 191. 8 191. 8 197. 3 192. 6 195. 0 192. 6 198. 9 195. 8 192. 6 191. 1 191. 1 190. 3 190. 3 190. 3 194. 2 196. 5 195. 8 200. 4 203. 6 202. 8 204. 4 213. 8 212. 2 

### Mixe d Cone

, 

### (ug/l )

1.5 0 1.5 2 1.5 0 1.5 0 1.5 0 1.4 9 1.4 8 1.5 0 1.4 8 1.4 8 1.4 8 1.4 9 1.4 8 1.4 9 1.4 9 1.4 8 1.4 9 1.4 9 1.4 8 1.4 8 1.4 8 1.4 8 1.4 7 1.4 8 1.4 8 1.4 8 1.46 1.4 7 1.4 8 1.4 9 1.4 9 1.4 9 1.4 9 1.4 9 1.4 8 1.4 7 1.4 7 1.46 1.4 5 1.4 5 1.4 5 1.4 2 1.4 3 Ran k

7 1 5 5 6 7 7 7 7 8 8 5 11 7 7 9 10 3 10 9 10 4 9 7 10 5 9 8 8 6 11 9 8 7 9 9 12 0 12 4 106 10 7 13 3 11 0 125 1 1 1 13 9 12 6 11 2 10 0 10 1 9 2 9 3 9 4 12 1 13 1 12 7 14 1 14 9 14 6 15 1 16 9 16 5 

### Prob

. o f Non

- Exceed

.

0.81 0.8 5 0.8 2 0.7 9 0.7 9 0.7 7 

### 0.6 8 0.7 8 0.7 2 0.7 0 0.7 2 0.7 4 0.7 1 0.7 3 0.7 7 0.6 8 0.7 6 0.7 3 0.6 7 0.6 6 0.7 1 0.7 1 0.6 4 0.7 0 0.6 6 0.7 0 0.6 2 0.6 6 0.6 9 0.7 3 0.7 2 0.7 5 0.7 5 0.7 4 0.6 7 0.6 4 0.6 5 0.6 2 0.5 9 0.6 0 0.5 9 0.5 4 0.5 5 

### Probabilit y o f Occurrence

0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7



### File : StatSig.xls Sheet : C d Summar y 

### Pag e 8 o f 8

## Estimate d

Mea n o f Mea n Dail y Flo w Rate s an d Predicte d Seleniu m Concentration s i n th e Jorda n Rive r wit h Groundwate r Discharg e a t 90 0 ug/ l Midvale Slag OU 2 

## Jorda n Rive r Mea n Flo w S e Concentratio n

10 0 

## 3.0 0

- - 2.5 0

- - 2.0 0



## o >

c 

## o 1.5 0

c 0 )



### o 

## c 

## o 

# o 1.00

0.5 0

0.0 0

Da y

File : StatSig.xl s 

### Page : S e Cone

. & Flo w 9/24/200 2 

### Pag e 1 o f 1

## Estimate d Seleniu m Concentration s i n th e Jorda n Rive r a t Mea n Dail y Flo w Rat e Probabilit y o f Non-Exceedanc e wit h Groun d wate r Discharg e a t 90 0 ug/ l

an d Upstrea m Concentratio n a t 1. 9 ug/ l



## 1.0 0

0.9 0

0.1 0

0.0 0 2.1 0 2.20 2.3 0 2.40

2.5

0 

## Concentratio n (ug/l ) 2.6

0 2.7

0 2.8

0

File

. StatSig.xl s Page : S e Prob

. 9/24/200 2 

### Pag e 1 o f 1

# CO M Midval e Slag OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Seleniu m Concentration s i n th e Jorda n Rive r base d o n Mea n o f Dail y Mea n Flo w 

## Groun d Water/Surfac e Wate r Mixing Parameters Groun d wate r flo w rat e = 0.14 4 cf s Averag e groun d wate r concentratio n = 90 0 ug/ l Averag e surfac e wate r concentratio n = 1. 9 ug/ l Max

=

2.7 0 Min

= 2.1 3

Mont h

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 

### Da y

1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 16 1 7 1 8 1 9 2 0 21 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5

, 1 6 

### Mea n Flo w Rat e - D G (cfs )

47 0 47 4 47 6 46 7 47 1 47 0 46 8 46 9 47 0 47 4 47 9 48 0 48 1 48 7 

### 48 8 48 7 49 3 

### 48 0 48 1 47 2 48 6 48 8 48 7 48 8 49 4 501 50 3 50 2 49 8 49 7 49 9 50 2 50 6 52 2 52 7 531 53 3 53 4 53 6 54 0 54 3 55 0 56 0 56 7 57 8 57 8 57 6 

### Mea n Flo w 

### Rat e - U G (cfs)

209. 1 212. 2 213. 8 206. 7 209. 8 209. 1 207. 5 208. 3 209. 1 212. 2 216. 1 216. 9 217. 7 222. 4 223. 1 222. 4 227. 1 216. 9 217. 7 210. 6 221. 6 223. 1 222. 4 223. 1 227. 8 233. 3 234. 9 234. 1 231. 0 230. 2 231. 7 234. 1 237. 2 249. 7 253. 7 256. 8 258. 4 259. 1 260. 7 263. 8 266. 2 271. 7 279. 5 285. 0 293. 6 293. 6 292. 0 

### Mixe d Cone

. 

### (ug/ D

2.5 2 2.5 1 2.5 0 2.5 3 2.5 2 2.5 2 2.5 2 2.5 2 2.5 2 2.51 

### 2.5 0 2.5 0 2.4 9 2.4 8 2.4 8 2.4 8 2.4 7 2.5 0 2.4 9 2.51 2.4 8 2.4 8 2.4 8 2.4 8 2.4 7 2.4 5 2.4 5 2.45 2.4 6 2.46 2.4 6 2.4 5 2.4 4 2.4 2 2.4 1 2.4 0 2.40 2.40 2.40 2.3 9 2.3 9 2.3 8 2.36 2.3 5 2.3 4 2.3 4 2.3 4 

### Ran k

15 7 16 3 16 7 15 3 16 1 15 8 15 5 15 6 15 9 16 4 17 1 17 2 17 6 18 1 18 4 18 2 18 8 17 3 17 7 16 2 18 0 18 5 18 3 18 6 18 9 19 7 20 2 19 9 19 4 19 3 19 5 20 0 20 4 207 20 9 21 0 2 1 1 21 3 21 6 21 8 21 9 22 0 22 2 22 3 23 1 23 2 22 9 

### Prob

. o f Non

- 

### Exceed

.

0.5 7 0.5 6 0.5 4 0.5 8 0.5 6 0.5 7 0.5 8 0.5 7 0.5 7 0.5 5 0.5 3 0.5 3 0.5 2 0.5 1 

### 0.5 0 0.5 0 0.4 9 0.5 3 0.5 2 0.5 6 0.5 1 0.5 0 0.5 0 0.4 9 0.4 9 0.4 6 0.4 5 0.46 0.47 0.47 0.47 0.46 0.4 4 0.4 4 0.4 3 0.4 3 0.4 3 0.4 2 0.4 1 0.4 1 0.4 0 0.4 0 0.4 0 0.3 9 0.37 0.37 0.3 8 

### Probabilit y o f Occurrenc e

0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7



### File : StatSig.xl s Sheet : S e Summary 

### Pag e 1 o f 8

# CO M Midval e Sla g OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Seleniu m Concentration s i n th e Jorda n River base d o n Mea n o f Dail y Mea n Flo w Groun d Water/Surfac e Wate r Mixin g Parameter s 

## Groun d wate r flo w rat e = 0.144 cf s Averag e groun d wate r concentratio n = 90 0 ug/ l Averag e surfac e wate r concentratio n = 1. 9 ug/ l Max

=

2.7 0 Min

= 2.1 3

Mont h

2 2 2 2 2 2 2 2 2 2 2 2 2 

### 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 

### 3 4 4 

### Da y

1 7 1 8 1 9 2 0 21 

### 2 2 2 3 2 4 2 5 2 6 2 7 

### 2 8 2 9 1 2 3 4 

### 5 6 7 8 9 1 0 1 1 

### 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 1 2 

### Mea n Flo w 

### Rat e - D G (cfs)

57 8 58 9 58 7 58 5 58 8 60 1 

### 596 60 0 

### 60 0 597 60 0 59 8 59 9 58 9 58 2 587 58 1 58 3 

### 587 57 8 

### 58 0 59 1 586 587 58 4 

### 57 8 58 3

. 58 3 57 9 58 1 57 8 57 7 57 4 57 3 57 4 59 3 60 4 61 5 61 4 61 7 62 4 612 61 0 61 3 62 2 647 

### Mea n Flo w 

### Rat e - U G (cfs )

293. 6 302. 2 300. 6 299. 0 301. 4 311. 6 307. 7 310. 8 310. 8 308. 4 310. 8 309. 2 310. 0 302. 2 296. 7 300. 6 295. 9 297. 5 300. 6 293. 6 295. 1 303. 7 299. 8 300. 6 298. 3 293. 6 297. 5 297. 5 294. 3 

### 295. 9 293. 6 292. 8 290. 4 289. 7 290. 4 305. 3 313. 9 322. 5 321. 7 324. 1 329. 6 320. 2 318. 6 321. 0 328. 0 347. 6 

### Mixe d Cone

. 

## (ug/l )

2.3 4 2.3 3 2.3 3 2.3 3 2.3 3 2.3 1 

### 2.3 2 2.3 2 

### 2.3 2 2.3 2 2.3 2 2.3 2 2.3 2 2.3 3 2.3 4 

### 2.3 3 2.3 4 2.3 3 2.3 3 2.3 4 2.3 4 2.3 3 2.3 3 2.3 3 2.3 3 

### 2.3 4 2.3 3 2.3 3 2.3 4 2.3 4 2.3 4 2.3 4 2.3 5 2.3 5 2.3 5 2.3 2 2.3 1 2.30 2.3 0 2.30 2.2 9 2.30 2.3 1 2.30 2.2 9 2.27 

### Ran k

23 3 25 4 24 9 24 7 25 3 26 6 25 8 26 3 26 4 25 9 26 5 26 0 26 2 25 5 24 2 25 0 240 24 3 25 1 23 4 23 9 25 6 24 8 25 2 246 23 5 24 4 24 5 237 24 1 236 23 0 22 6 22 5 22 7 25 7 26 7 27 4 27 3 27 5 28 1 27 0 26 9 271 27 9 30 0 

### Prob

. o f Non

- 

### Exceed

.

0.3 7 0.3 1 0.3 2 0.3 3 0.3 1 

### 0.2 8 0.3 0 0.2 8 0.2 8 0.2 9 0.2 8 0.2 9 0.2 9 0.31 0.3 4 0.3 2 0.3 5 0.3 4 0.3 2 0.3 6 0.3 5 0.3 0 0.3 2 0.31 0.3 3 0.3 6 0.3 4 0.3 3 0.3 5 0.3 4 0.3 6 0.3 7 0.3 8 0.3 9 0.3 8 0.3 0 0.2 7 0.2 5 0.2 6 0.2 5 0.2 3 0.2 6 0.2 7 0.2 6 0.2 4 0.18 

### Probabilit y o f Occurrenc e

0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7



### File : StatSig.xl s 

### Sheet : S e Summar y 

### Pag e 2 o f 8

# CO M Midval e Slag OU 2 3282-986-FSZ-DGRC

Z Estimate d Seleniu m Concentration s in th e Jorda n Rive r base d o n Mea n o f Dail y Mea n Flo w 

## Groun d Water/Surfac e Wate r Mixin g Parameter s Groun d water flo w rat e = 0.14 4 cf s 

## Averag e groun d wate r concentratio n = 90 0 ug/ l Averag e surfac e wate r concentratio n = 1. 9 ug/ l 

## Ma x = M in = 2.7 0 2.1 3

Mont h

4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5

. 5 5 5 

### Da y

3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 

### 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 

### 1 6 17 1 8 

### Mea n Flo w Rat e - D G (cfs)

63 1 61 9 613 620 62 2 62 7 63 2 63 1 62 9 63 5 62 9 62 4 62 4 62 4 61 7 64 3 65 0 65 4 64 8 64 5 63 9 65 0 647 65 4 66 3 65 0 65 3 63 2 63 3 63 4 65 5 65 7 647 647 65 8 67 2 67 4 68 4 68 3 67 3 68 5 68 3 71 8 73 6 73 5 72 0 

### Mea n Flo w 

### Rat e - U G (cfs)

335. 0 325. 6 321. 0 326. 4 328. 0 331. 9 335. 8 335. 0 333. 5 338. 2 333. 5 329. 6 329. 6 329. 6 324. 1 344. 4 349. 9 353. 0 348. 3 346. 0 341. 3 349. 9 347. 6 353. 0 360. 1 349. 9 352. 3 335. 8 336. 6 337. 4 353. 8 355. 4 347. 6 347. 6 356. 2 367. 1 368. 7 376. 5 375. 7 367. 9 377. 3 375. 7 403. 1 417. 2 416. 4 404. 7 

### Mixe d Cone

, 

### (ug/l )

2.2 9 2.3 0 2.3 0 2.3 0 2.2 9 2.2 9 2.2 8 2.2 9 2.2 9 2.2 8 2.2 9 2.2 9 2.2 9 2.2 9 2.3 0 2.2 8 2.27 2.2 7 2.2 7 2.2 7 2.2 8 2.2 7 2.2 7 2.2 7 2.26 2.2 7 2.2 7 2.2 8 2.28 2.2 8 2.2 7 2.26 2.2 7 2.2 7 2.26 2.2 5 2.2 5 2.2 4 2.2 4 2.2 5 2.2 4 2.2 4 2.2 2 2.2 1 2.2 1 2.2 2 

### Ran k

28 9 27 7 27 2 27 8 280 28 6 29 1 29 0 28 7 29 5 28 8 28 2 28 3 28 4 27 6 29 8 30 5 30 9 30 4 29 9 29 6 30 6 30 1 31 0 31 4 30 7 30 8 29 2 29 3 29 4 31 1 31 2 30 2 30 3 31 3 31 6 31 8 32 2 32 0 31 7 32 3 32 1 32 7 33 2 33 1 32 9 

### Prob

. o f Non

- Exceed

.

0.21 0.2 5 0.2 6 0.2 4 0.2 4 0.2 2 0.2 1 0.2 1 0.2 2 0.2 0 0.2 2 0.2 3 0.2 3 0.2 3 0.2 5 0.1 9 0.1 7 0.1 6 0.1 7 0.19 0.1 9 0.1 7 0.1 8 0.1 6 0.1 4 0.1 6 0.1 6 0.2 0 0.20 0.2 0 0.1 5 0.1 5 0.1 8 0.1 7 0.1 5 0.14 0.1 3 0.1 2 0.13 0.14 0.1 2 0.1 3 0.1 1 0.1 0 0.1 0 0.1 0 

### Probabilit y o f Occurrenc e

0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7



### File : StatSig.xl s 

### Sheet : S e Summar y 

### Pag e 3 o f 8 

# I 

# I I 1 I 

# I 

# I I I 

# I I I 

# I I 

# I I 

# I I 

# I

# CO M Midval e Slag OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Seleniu m Concentration s i n th e Jorda n Rive r base d o n Mea n o f Dail y Mea n Flo w 

## Groun d Water/Surfac e Wate r Mixin g Parameter s Groun d wate r flo w rat e = 0.144 cf s Averag e groun d wate r concentratio n = 90 0 ug/ l Averag e surfac e water concentratio n = 1. 9 ug/ l Max

=

2.7 0 Min

= 2.1 3

Mont h



### 5 5 5 5 5 5 5 5 5 5 5 5 5 6 6 6 6 6 6 6 6 6 

### 6 6 

### 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 7 7 7 

### Da y

1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 1 

### 2 3 4 5 

### 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 

### 1 6 17 1 8 1 9 

### 2 0 2 1 

### 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 1 

### 2 3 

### Mea n Flo w 

### Rat e - D G (cfs )

72 0 73 6 78 4 82 9 80 7 81 4 82 0 83 9 84 3 85 1 86 3 88 0 88 8 89 9 89 8 90 3 90 2 91 6 90 6 91 0 90 9 88 9 89 0 87 6 85 7 

### 86 5 86 4 84 2 82 6 81 9 78 8 77 1 75 0 74 5 74 5 71 9 70 5 71 6 69 1 67 6 66 3 64 2 62 5 60 4 59 8 57 9 

### Mea n Flo w 

### Rat e - U G (cfs )

404. 7 417. 2 454. 8 490. 0 472. 8 478. 2 482. 9 497. 8 500. 9 507. 2 516. 6 529. 9 536. 1 544. 7 544. 0 547. 9 547. 1 558. 1 550. 2 553. 4 552. 6 536. 9 537. 7 526. 8 511. 9 

### 518. 1 517. 4 500. 1 487. 6 482. 1 457. 9 444. 6 428. 2 424. 2 424. 2 403. 9 392. 9 401. 6 382. 0 370. 3 360. 1 343. 6 330. 3 

### 313. 9 309. 2 294. 3 

### Mixe d Cone

, (ug/l )

2.2 2 2.2 1 2.18 2.16 2.1 7 2.1 7 2.1 7 2.1 6 2.1 6 2.1 5 2.1 5 2.14 2.14 2.14 2.14 2.14 2.14 2.13



### • 2.1 3 2.1 3 2.13 2.14 2.14 2.15 2.15 

### 2.1 5 2.15 2.1 6 2.1 7 2.1 7 2.18 2.1 9 2.20 2.20 2.20 2.2 2 2.2 3 2.2 2 2.2 4 2.2 5 2.2 6 2.2 8 2.2 9 

### 2.3 1 2.3 2 2.3 4 

### Ran k

33 0 33 3 33 8 34 5 34 0 34 1 34 3 34 6

- 348 34 9 35 1 35 5 35 6 36 0 35 9 

### 36 2 36 1 36 6 36 3 36 5 36 4 35 7 35 8 35 4 35 0 35 3 35 2 34 7 34 4 

### 34 2 33 9 

### 33 7 33 6 33 4 

### 33 5 32 8 32 5 32 6 32 4 31 9 31 5 29 7 28 5 26 8 

### 26 1 23 8 Prob

. o f Non

- 

### Exceed

.

0.10 0.0 9 0.0 8 0.0 6 0.0 7 0.0 7 0.0 7 0.0 6 

### 0.0 5 0.0 5 0.0 4 0.0 3 0.0 3 0.0 2 0.0 2 0.0 1 0.0 2 0.0 0 0.0 1 0.0 1 0.0 1 0.0 3 0.0 2 0.0 4 0.0 5 0.0 4 0.0 4 0.0 5 0.0 6 0.0 7 0.0 8 0.0 8 0.0 8 0.0 9 0.0 9 0.1 1 0.1 1 0.1 1 0.1 2 0.1 3 0.1 4 0.1 9 0.2 2 0.27 0.2 9 0.3 5 

### Probabilit y o f Occurrence

0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 

### 0.002 7 0.002 7 0:002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7



# t File : StatSig.xls Sheet : S e Summar y Pag e 4 o f 8

# CO M Midval e Slag OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Seleniu m Concentration s i n th e Jorda n Rive r base d o n Mea n o f Dail y Mea n Flo w 

## Groun d Water/Surfac e Wate r Mixin g Parameter s Groun d wate r flo w rat e = 0.14 4 cf s 

## Averag e groun d wate r concentratio n = 90 0 ug/ l Averag e surfac e wate r concentratio n = 1. 9 ug/ l Max

=

2.7 0 M in = 2.1 3

Mont h

7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 

### 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 

### Da y

4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 17 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 1 2 3 4 5 6 7 

### 8 9 

### 1 0 1 1 1 2 1 3 1 4 1 5 1 6 17 1 8 

### Mea n Flo w Rat e - D G 

### (cfs)

56 7 57 5 55 1 53 5 53 3 53 8 53 5 52 3 51 9 51 2 49 4 49 4 49 0 49 4 48 5 48 0 47 5 47 6 48 5 50 1 50 3 50 2 49 9 48 0 47 7 47 0 46 1 46 3 45 6 44 9 43 6 43 4 44 2 42 8 42 0 41 6 41 4 40 9 41 7 41 0 41 6 41 1 41 6 42 3 42 1 42 8 

### Mea n Flo w 

### Rat e - U G (cfs)

285. 0 

### 291. 2 272. 4 259. 9 258. 4 262. 3 259. 9 250. 5 247. 4 241. 9 227. 8 227. 8 224. 7 227. 8 220. 8 216. 9 213. 0 213. 8 220. 8 233. 3 234. 9 234. 1 231. 7 216. 9 214. 5 209. 1 202. 0 203. 6 198. 1 192. 6 182. 5 180. 9 187. 1 176. 2 169. 9 166. 8 165. 2 161. 3 167. 6 162. 1 166. 8 162. 9 166. 8 172. 3 170. 7 176. 2 

### Mixe d Cone

, 

### (ug/l )

2.3 5 2.3 4 

### 2.37 2.4 0 2.40 2.3 9 2.4 0 2.4 2 2.4 2 2.4 3 2.4 7 2.4 7 2.4 8 2.4 7 2.4 9 2.5 0 2.51 2.5 0 2.4 9 2.45 2.4 5 2.4 5 2.46 2.5 0 2.5 0 2.5 2 2.5 4 2.5 3 2.5 5 2.5 7 2.6 1 2.6 1 2.5 9 2.6 3 2.6 6 2.6 7 2.6 8 2.7 0 2.6 7 2.7 0 2.6 7 2.6 9 2.6 7 2.6 5 2.6 6 2.6 3 

### Ran k

22 4 228 22 1 21 4 21 2 21 7 21 5 20 8 20 6 20 5 19 0 19 1 18 7 19 2 17 8 17 4 16 6 16 8 17 9 19 8 20 3 20 1 19 6 17 5 17 0 16 0 14 2 14 7 13 4 10 8 5 4 5 1 7 2 4 1 2 5 1 4 8 2 2 0 4 1 5 5 1 6 3 5 2 7 4 2 

### Prob

. o f Non

- 

### Exceed

.

0.3 9 0.3 8 0.4 0 0.4 2 0.4 2 0.4 1 0.4 1 0.4 3 0.4 4 0.4 4 0.4 8 0.4 8 0.4 9 0.4 8 0.5 1 0.5 3 0.5 5 0.5 4 0.5 1 0.4 6 0.4 5 0.4 5 0.47 0.5 2 0.5 4 0.5 6 0.6 1 0.6 0 0.6 3 0.7 1 0.8 5 0.8 6 0.8 0 0.8 9 0.9 3 0.96 0.9 8 0.9 9 0.9 5 0.9 9 0.96 0.9 9 0.9 6 0.90 0.9 3 0.8 9 

### Probabilit y o f Occurrenc e

0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7



### File : StatSig.xl s Sheet : S e Summar y Pag e 5 o f 8 

# I 

# I I 1 I 

# I 

# I I I I 

# I 

# I I 

# I I I 

# I t I

# CO M Midval e Slag OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Seleniu m Concentration s i n th e Jorda n River base d o n Mea n o f Dail y Mea n Flo w 

## Groun d Water/Surfac e Wate r Mixin g Parameter s Groun d wate r flo w rat e = 0.144 cf s Averag e groun d wate r concentratio n = 90 0 ug/ l 

## Averag e surfac e wate r concentratio n = 1. 9 ug/ l Ma

x = 2.7 0 Min

= 2.1 3

Mont h



### 8 8 8 8 8 8 8 8 8 8 8 8 8 9 9 9 

### 9 9 

### 9 9 9 9 9 

### 9 9 

### 9 9 9 9 9 9 9 

### 9 9 9 

### 9 9 

### 9 9 

### 9 9 9 9 1 0 1 0 1 0 

### Da y

1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 1 

### 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3

1 4 1 5 1 6 1 7 1 8 1 9 2 0 21 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 1 2 3 

### Mea n Flo w 

### Rat e - D G (cfs)

44 0 44 0 44 3 44 0 427 42 1 421 42 2 

### 42 2 416 415 41 2 41 9 40 8 414 42 1 42 1 42 6 44 6 44 0 44 6 44 2 45 2 45 4 44 7 43 8 431 42 8 42 5 427 44 6 44 5 43 5 43 9 44 1 45 7 44 3 45 0 45 6 46 7 46 1 44 7 45 1 45 4 45 0 45 7 

### Mea n Flo w Rat e - U G (cfs)

185. 6 185. 6 187. 9 185. 6 175. 4 170. 7 170. 7 171. 5 171. 5 166. 8 166. 0 163. 7 169. 1 160. 5 

### 165. 2 170. 7 170. 7 174. 6 190. 3 185. 6 190. 3 187. 1 195. 0 196. 5 191. 1 184. 0 178. 5 176. 2 173. 8 175. 4 190. 3 189. 5 181. 7 184. 8 186. 4 198. 9 187. 9 193. 4 198. 1 206. 7 202. 0 191. 1 194. 2 196. 5 193. 4 198. 9 

### Mixe d Cone

, 

## (ug/l )

2.6 0 2.6 0 2.5 9 2.6 0 2.6 4 2.6 6 2.6 6 2.6 5 2.6 5 2.6 7 2.6 8 2.6 9 2.6 6 2.7 0 2.6 8 2.6 6 

### 2.6 6 2.6 4 2.5 8 2.6 0 2.5 8 2.5 9 2.5 6 2.5 6 2.5 8 2.6 0 2.6 2 2.6 3 2.6 4 2.6 4 2.5 8 2.5 8 2.6 1 2.6 0 2.5 9 2.5 5 2.5 9 2.5 7 2.5 5 2.5 3 2.5 4 2.5 8 2.5 7 

### 2.5 6 2.5 7 2.5 5 

### Ran k

6 1 6 2 8 0 

### 6 3 3 9 2 8 2 9 3 2 3 3 1 7 1 0 6 2 2 1 9 3 0 3 1 3 7 8 8 6 4 8 9 7 3 12 2 128 9 5 5 7 4 4 4 3 3 6 4 0 9 0 8 4 5 2 5 9 6 8 13 6 8 1 11 3 13 5 15 4 14 3 9 6 11 8 12 9 11 4 13 7 

### Prob

. o f Non

- Exceed

.

0.8 3 0.8 3 0.7 8 0.8 3 0.8 9 

### 0.9 2 0.9 2 0.9 1 0.9 1 0.9 5 0.97 0.9 8 0.9 4 1.0 0 0.9 8 0.9 2 0.9 2 0.9 0 0.7 6 0.8 3 0.7 6 0.8 0 0.6 7 0.6 5 0.7 4 0.8 4 0.8 8 0.8 8 0.9 0 

### 0.8 9 0.7 5 0.7 7 0.8 6 0.8 4 0.8 1 0.6 3 0.7 8 0.6 9 0.6 3 0.5 8

- 0.6 1 0.7 4 0.6 8 0.6 5 0.6 9 0.6 3 

### Probabilit y o f Occurrenc e

0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7



# I File : StatSig.xl s 

### Sheet : S e Summar y 

### Pag e 6 o f 8

# CO M Midval e Slag OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Seleniu m Concentration s i n th e Jorda n River based o n Mea n o f Dail y Mea n Flo w 

## Groun d Water/Surfac e Wate r Mixin g Parameter s Groun d wate r flo w rat e = 0.14 4 cf s Averag e groun d water concentratio n = 90 0 ug/ l Averag e surfac e wate r concentratio n = 1. 9 ug/ l Max

=

2.7 0 Min

= 2.1 3

Mont h

1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 

## 1 1 

## 1 1 1 1 1 1 

## 1 1 1 1 

## 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 11 Da y

4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 

### Mea n Flo w 

### Rat e - D G (cfs)

45 7 45 0 44 8 46 2 46 1 45 0 45 4 45 8 46 3 45 2 46 4 46 5 45 5 42 6 41 9 42 2 42 0 415 41 9 41 2

• 415 40 9 41 7 43 1 415 41 6 43 2 43 8 43 1 44 3 43 1 41 6 43 2 43 2 43 5 44 6 44 0 43 9 44 0 44 2 44 2 44 4 44 2 44 1 43 7 441 

### Mea n Flo w 

### Rat e - U G (cfs)

198. 9 193. 4 191. 8 202. 8 202. 0 193. 4 196. 5 199. 7 203. 6 

### 195. 0 204. 4 205. 1 197. 3 174. 6 169. 1 171. 5 169. 9 166. 0 169. 1 163. 7 166. 0 161. 3 167. 6 178. 5 166. 0 166. 8 179. 3 184. 0 178. 5 187. 9 178. 5 166. 8 179. 3 179. 3 181. 7 190. 3 185. 6 184. 8 185. 6 187. 1 187. 1 188. 7 187. 1 186. 4 183. 2 186. 4 

### Mixe d Cone

, 

## (ug/l )

2.5 5 2.5 7 2.5 7 2.5 4 2.5 4 2.5 7 

### 2.5 6 2.5 5 2.5 3 2.5 6 2.5 3 2.5 3 2.5 5 2.6 4 2.6 6 2.6 5 2.6 6 2.6 8 2.6 6 2.6 9 2.6 8 2.7 0 2.6 7 2.6 2 2.6 8 2.6 7 2.6 2 2.6 0 2.6 2 2.5 9 2.6 2 2.6 7 2.6 2 2.6 2 2.6 1 2.5 8 2.6 0 2.6 0 2.6 0 2.5 9 2.5 9 2.5 8 2.5 9 2.5 9 2.6 1 2.5 9 

### Ran k

13 8 11 5 10 2 14 5 14 4 11 6 13 0 140 14 8 12 3 15 0 15 2 13 2 3 8 2 3 3 4 2 6 1 1 2 4 7 1 2 3 2 1 4 5 1 3 1 8 4 8 5 8 4 6 8 2 4 7 1 9 4 9 5 0 5 3 9 1 6 5 6 0 6 6 7 4 7 5 8 3 7 6 6 9 5 6 7 0 

### Prob

. o f Non

- 

### Exceed

.

0.6 2 0.6 9 0.7 2 0.6 0 0.6 1 0.6 8 0.6 5 0.6 2 0.6 0 0.6 6 0.5 9 0.5 9 0.6 4 0.9 0 0.9 4 0.9 1 0.9 3 0.9 7 0.9 3 0.9 8 0.9 7 0.9 9 0.9 4 0.8 8 0.9 6 0.9 5 0.87 0.8 4 0.8 7 0.7 8 0.87 0.9 5 0.87 0.8 6 0.8 6 0.7 5 0.8 2 0.8 4 0.8 2 0.8 0 0.8 0 0.7 7 0.7 9 0.8 1 0.8 5 0.8 1 

### Probabilit y o f Occurrenc e

0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7



### File : StatSig.xls 

### Sheet : S e Summar y Pag e 7 o f 8 

# I 

# I I I I I 

# I I I 

# I I 

# i i i § i i i i

# CO M Midval e Sla g OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Seleniu m Concentration s in th e Jorda n Rive r based o n Mea n o f Dail y Mea n Flo w 

## Groun d Water/Surfac e Wate r Mixin g Parameter s Groun d wate r flo w rat e = 0.14 4 cf s Averag e groun d wate r concentratio n = 90 0 ug/ l 

## Averag e surfac e wate r concentratio n = 1. 9 ug/ l Ma x = M in = 2.7 0 2.1 3

Mont h

1 1 1 1 11 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 

### 1 2 1 2 1 2 

### 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 

### Da y

1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 1 2 

### 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 

### 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 

### Mea n Flo w 

### Rat e - D G (cfs)

44 1 43 6 44 0 44 2 44 2 44 5 45 0 44 2 44 8 44 9 44 8 44 7 44 8 44 7 44 5 45 1 44 5 44 7 45 1 45 2 44 8 44 8 45 5 44 9 45 2 44 9 45 7 45 3 44 9 44 7 44 7 44 6 44 6 44 6 45 1 45 4 45 3 45 9 46 3 46 2 46 4 47 6 47 4 

### Mea n Flo w Rat e - U G (cfs)

186. 4 182. 5 185. 6 187. 1 187. 1 189. 5 193. 4 187.1 191. 8 192. 6 191. 8 191. 1 

### 191. 8 191. 1 

### 189. 5 194. 2 189. 5 191. 1 194. 2 195. 0 191. 8 

### 191. 8 197. 3 192. 6 195. 0 

### 192. 6 198. 9 195. 8 192. 6 191. 1 191. 1 190. 3 190. 3 

### 190. 3 194. 2 196. 5 195. 8 200. 4 203. 6 

### 202. 8 204. 4 213. 8 212. 2 

### Mixe d Cone

, 

### (ug/l )

2.5 9 2.6 1 2.6 0 2.5 9 2.5 9 2.5 8 2.5 7 2.5 9 2.5 7 2.5 7 2.5 7 2.5 8 2.5 7 2.5 8 2.5 8 2.5 7 2.5 8 2.5 8 2.5 7 2.5 6 2.5 7 2.5 7 2.5 5 2.5 7 2.5 6 2.5 7 2.5 5 2.5 6 2.5 7 2.5 8 2.5 8 2.5 8 2.5 8 2.5 8 2.5 7 2.5 6 2.5 6 2.5 4 2.5 3 2.5 4 2.5 3 2.5 0 2.5 1 

### Ran k

7 1 5 5 6 7 7 7 7 8 8 5 11 7 7 9 10 3 10 9 10 4 9 7 10 5 9 8 8 6 11 9 8 7 9 9 120 12 4 10 6 10 7 13 3 11 0 125 1 1 1 13 9 12 6 11 2 10 0 10 1 9 2 9 3 9 4 12 1 13 1 12 7 14 1 14 9 14 6 15 1 16 9 16 5 

### Prob

. o f Non

- 

### Exceed

.

0.81 0.8 5 0.8 2 0.7 9 0.7 9 0.7 7 0.6 8 0.7 8 0.7 2 0.7 0 0.7 2 0.7 4 0.7 1 0.7 3 0.7 7 0.6 8 0.7 6 0.7 3 0.6 7 0.6 6 0.7 1 0.7 1 0.6 4 0.7 0 0.6 6 0.7 0 0.6 2 0.6 6 0.6 9 0.7 3 0.7 2 0.7 5 0.7 5 0.7 4 0.6 7 0.6 4 0.6 5 0.6 2 0.5 9 0.6 0 0.5 9 0.5 4 0.5 5 

### Probabilit y o f Occurrence

0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7



### File : StatSig.xls Sheet : S e Summar y 

### Pag e 8 o f 8

## Estimate d

Mea n o f Mea n Dail y Flo w Rate s an d Predicte d Antimon y Concentration s i n th e Jorda n Rive r wit h Groundwate r Discharg e a t 38 0 ug/ l Midvale Slag OU 2



## 60 0

55 0

10 0 0.7 1

- 0.7 0 

## Jorda n Rive r Mea n Flo w S b Concentratio n

( D (£ > 

## 0.6

2



## Da y

File : StatSig.xl s Page : S b Cone

. & Flo w 9/24/200 2 

### Pag e 1 o f 1

## Estimate d Antimon y Concentration s i n th e Jorda n Rive r a t Mea n Dail y Flo w Rat e 

## Probabilit y o f Non-Exceedanc e wit h Groundwate r Discharg e a t 38 0 ug/ l

an d Upstrea m Concentratio n a t 0. 6 ug/ l



## 1.0 0

0.90

-

0.8 0

0.6 2 0.6 3 0.6 4 0.6 5 0.6 6 0.6

7 

## Concentratio n (ug/l ) 0.6 8 0.6 9 0.7 0 0.7 1

File : StatSig.xl s 

### Page : S b Prob

. 9/24/200 2 Pag e 1 o f 1

# CO M Midval e Sla g OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Antimon y Concentration s i n th e Jorda n Rive r base d o n Mea n o f Dail y Mea n Flo w 

## Groun d Water/Surfac e Wate r Mixing Parameter s Groun d wate r flo w rat e = 0.04 3 cf s Averag e groun d wate r concentratio n = 38 0 ug/ l Averag e surfac e wate r concentratio n = 0. 6 ug/ l Ma x = M in = 0.7 0 0.6 3

Mont h

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 

### Da y

1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 21 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 

### Mea n Flo w Rat e - D G (cfs )

47 0 47 4 47 6 46 7 47 1 47 0 46 8 46 9 47 0 47 4 47 9 48 0 48 1 48 7 48 8 48 7 49 3 48 0 48 1 47 2 48 6 48 8 48 7 48 8 49 4 501 50 3 50 2 49 8 497 49 9 50 2 50 6 52 2 52 7 53 1 53 3 53 4 53 6 54 0 54 3 55 0 56 0 56 7 57 8 57 8 57 6 

### Mea n Flo w 

### Rat e - U G (cfs)

209. 1 212. 2 213. 8 206. 7 209. 8 209. 1 207. 5 208. 3 209. 1 212. 2 

### 216. 1 216. 9 217. 7 222. 4 223. 1 222. 4 227. 1 216. 9 217. 7 210. 6 221. 6 223. 1 222. 4 223. 1 227. 8 233. 3 234. 9 234. 1 231. 0 230. 2 231. 7 234. 1 237. 2 249. 7 253. 7 256. 8 258. 4 259. 1 260. 7 263. 8 266. 2 271. 7 279. 5 285. 0 293. 6 293. 6 292. 0 

### Mixe d Cone

, (ug/l )

0.6 8 0.6 8 0.6 8 0.6 8 0.6 8 0.6 8 0.6 8 0.6 8 0.6 8 0.6 8 0.6 8 0.6 8 0.6 7 0.6 7 0.6 7 0.6 7 0.6 7 0.6 8 0.6 7 0.6 8 0.6 7 0.6 7 0.6 7 0.6 7 0.6 7 0.6 7 0.6 7 0.6 7 0.6 7 0.6 7 0.6 7 0.6 7 0.6 7 0.6 7 0.6 6 0.6 6 0.6 6 0.6 6 0.6 6 0.6 6 0.6 6 0.6 6 0.6 6 0.6 6 0.6 6 0.6 6 0.6 6 

### Ran k

15 7 16 3 16 7 15 3 161 15 8 15 5 15 6 15 9 16 4 17 1 17 2 17 6 18 1 18 4 18 2 18 8 17 3 17 7 16 2 180 18 5 183 186 18 9 19 7 20 2 19 9 19 4 19 3 19 5 20 0 20 4 20 7 20 9 21 0 21 1 21 3 21 6 21 8 21 9 220 22 2 22 3 23 1 23 2 22 9 Prob

. o f Non

- 

### Exceed

.

0.5 7 0.5 6 0.5 4 0.5 8 0.5 6 0.5 7 0.5 8 0.5 7 0.5 7 0.5 5 0.5 3 0.5 3 0.5 2 0.5 1 0.5 0 0.5 0 0.4 9 0.5 3 0.5 2 0.5 6 0.5 1 0.5 0 0.5 0 0.4 9 0.4 9 0.4 6 0.4 5 0.46 0.4 7 0.4 7 0.4 7 0.4 6 0.4 4 0.4 4 0.4 3 0.4 3 0.4 3 0.4 2 0.4 1 0.4 1 0.40 0.4 0 0.4 0 0.3 9 0.3 7 0.37 0.3 8 

### Probabilit y o f Occurrenc e

0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7



### File : StatSig.xl s 

### Sheet : S b Summar y 

### Pag e 1 o f 8 

# I 

# I I I 

# I I I I 

# f 

# I I 

# I I 

# I I 

# I 

# I I I

# CO M Midval e Sla g OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Antimon y Concentration s i n th e Jorda n Rive r base d o n Mea n o f Dail y Mea n Flo w 

## Groun d Water/Surfac e Wate r Mixing Parameter s Groun d wate r flo w rat e = 0.04 3 cf s Averag e groun d wate r concentratio n = 38 0 ug/ l Averag e surfac e wate r concentratio n = 0. 6 ug/ l Max

=

0.7 0 Mi n = 0.6 3

Mont h

2 2 2 2 2 2 2 2 2 2 2 2 2 3 3 

### 3 3 

### 3 3 

### 3 3 

### 3 3 3 3 

### 3 3 3 3 

### 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 4 4 

### Da y

1 7 1 8 1 9 2 0 2 1 2 2 

### 2 3 2 4 2 5 2 6 2 7 2 8 2 9 1 2 

### 3 4 5 6 7 8 9 1 0 1 1 

### 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 1 2 

### Mea n Flo w 

### Rat e - D G (cfs )

57 8 58 9 587 58 5 58 8 60 1 59 6 60 0 60 0 59 7 60 0 59 8 59 9 58 9 58 2 587 

### 58 1 58 3 58 7 

### 57 8 58 0 

### 59 1 58 6 58 7 58 4 57 8 58 3 58 3 57 9 58 1 57 8 57 7 57 4 57 3 57 4 59 3 60 4 61 5 61 4 61 7 62 4 612 61 0 61 3 62 2 64 7 

### Mea n Flo w 

### Rat e - U G (cfs )

293. 6 302. 2 300. 6 299. 0 301. 4 311. 6 307. 7 310. 8 310. 8 308. 4 310. 8 309. 2 310. 0 302. 2 296. 7 300. 6 295. 9 297. 5 300. 6 293. 6 295. 1 303. 7 299. 8 300. 6 

### 298. 3 293. 6 297. 5 297. 5 294. 3 

### 295. 9 293. 6 292. 8 290. 4 289. 7 290. 4 305. 3 313. 9 322. 5 321. 7 324. 1 329. 6 320. 2 318. 6 321. 0 328. 0 347. 6 

### Mixe d Cone

. 

## (ug/l )

0.6 6 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 6 0.6 5 0.6 5 0.6 6 0.6 6 0.6 5 0.6 5 0.6 5 0.6 5 0.6 6 0.6 5 0.6 5 0.6 6 0.6 6 0.6 6 0.6 6 0.6 6 0.6 6 0.6 6 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 

### Ran k

23 3 25 4 24 9 247 25 3 26 6 25 8 26 3 26 4 25 9 26 5 26 0 26 2 25 5 24 2 25 0 24 0 24 3 25 1 23 4 23 9 25 6 248 25 2 24 6 23 5 24 4 24 5 23 7 24 1 236 230 22 6 22 5 22 7 25 7 26 7 27 4 27 3 27 5 28 1 27 0 26 9 27 1 27 9 30 0 

### Prob

. o f Non

- 

### Exceed

.

0.3 7 0.31 0.3 2 0.3 3 0.31 0.2 8 0.3 0 0.2 8 0.2 8 0.2 9 0.2 8 0.2 9 0.2 9 0.3 1 0.3 4 0.3 2 0.3 5 0.3 4 0.3 2 

### 0.3 6 0.3 5 0.3 0 0.3 2 0.3 1 0.3 3 0.3 6 0.3 4 0.3 3 0.3 5 

### 0.3 4 0.3 6 0.3 7 0.3 8 0.3 9 0.3 8 0.3 0 0.2 7 0.2 5 0.2 6 0.2 5 0.2 3 0.2 6 0.27 0.2 6 0.2 4 0.18 

### Probabilit y o f Occurrence

0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 

### 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 

### 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7



### File : StatSig.xl s 

### Sheet : S b Summar y 

### Pag e 2 o f 3

# CO M Midval e Sla g OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Antimon y Concentration s i n th e Jorda n Rive r based o n Mea n o f Dail y Mea n Flo w 

## Groun d Water/Surfac e Wate r Mixin g Parameter s Groun d wate r flo w rat e = 

## Averag e groun d wate r concentratio n = Averag e surfac e water concentratio n = 0.04

3 cf s 

## 38 0 ug/ l 0. 6 ug/ l Max

=

0.7 0 Min

= 0.6 3

Mont h

4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 

### Da y

3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 

### 21 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 

### Mea n Flo w 

### Rat e - D G (cfs)

63 1 61 9 I 613 620 62 2 62 7 63 2 63 1 62 9 

### 63 5 62 9 62 4 62 4 62 4 61 7 64 3 65 0 65 4 64 8 64 5 63 9 65 0 647 65 4 66 3 65 0 65 3 63 2 63 3 63 4 65 5 .65 7 64 7 647 65 8 67 2 67 4 68 4 68 3 67 3 68 5 68 3 718 73 6 73 5 72 0 

### Mea n Flo w Rat e - U G (cfs )

335. 0 325. 6 321. 0 326. 4 328. 0 331. 9 335. 8 335. 0 333. 5 338. 2 333. 5 329. 6 329. 6 329. 6 324. 1 344. 4 349. 9 353. 0 348. 3 346. 0 341. 3 349. 9 347. 6 353. 0 360. 1 349. 9 352. 3 335. 8 336. 6 337. 4 353. 8 355. 4 347. 6 347. 6 356. 2 367. 1 368. 7 376. 5 375. 7 367. 9 377. 3 375. 7 403. 1 417. 2 416. 4 404. 7 

### Mixe d Cone

, 

### (ug/l )

0.6 5 0.6 5 0.6 5 0.6 5 

### 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 4 0.6 4 0.6 4 0.6 4 0.6 4 0.6 4 0.6 4 0.6 4 0.6 4 0.6 4 0.6 4 

### Ran k

28 9 27 7 27 2 27 8 28 0 28 6 29 1 29 0 287 29 5 28 8 28 2 28 3 28 4 27 6 29 8 30 5 30 9 30 4 29 9 29 6 30 6 30 1 31 0 31 4 30 7 30 8 29 2 29 3 29 4 31 1 31 2 30 2 30 3 31 3 31 6 31 8 32 2 32 0 31 7 32 3 32 1 32 7 33 2 33 1 32 9 

### Prob

. o f Non

- Exceed

.

0.21 0.2 5 0.2 6 0.2 4 0.2 4 0.2 2 0.2 1 0.21 0.2 2 0.2 0 0.2 2 0.2 3 0.2 3 0.2 3 0.2 5 0.1 9 0.1 7 0.1 6 0.1 7 0.1 9 0.1 9 0.1 7 0.18 0.16 0.14 0.1 6 0.1 6 0.2 0 0.2 0 0.2 0 0.1 5 0.1 5 0.18 0.1 7 0.15 0.14 0.13 0.1 2 0.1 3 0.14 0.1 2 0.1 3 0.1 1 0.1 0 0.1 0 0.1 0 

### Probabilit y o f Occurrenc e

0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7



### File : StatSig.xl s Sheet : S b Summar y Pag e 3 o f 8 

# I 

# I I I 

# I I I I 

# I I 

# I I I 

# I 1 

# i i i i

# CO M Midval e Slag OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Antimon y Concentration s i n th e Jorda n Rive r base d o n Mea n o f Dail y Mea n Flo w 

## Groun d Water/Surfac e Wate r Mixin g Parameter s Groun d wate r flo w rat e = 0.04 3 cf s 

## Averag e groun d wate r concentratio n = 38 0 ug/ l Averag e surfac e wate r concentratio n = 0. 6 ug/ l Max

=

0.7 0 

## Min

= 0.63

Mont h

5 5 5 5 5 5 5 5 5 5 5 5 5 6 6 6 6 6 6 6 

### 6 6 

### 6 6 6 6 6 6 6 

### 6 6 6 6 6 6 6 

### 6 6 6 6 6 6 6 7 7 7 

### Da y

1 9 2 0 

### 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 1 2 3 4 5 6 7 

### 8 9 

### 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 1 

### 2 3 

### Mea n Flo w Rat e - D G 

### (cfs )

72 0 73 6 78 4 82 9 80 7 81 4 82 0 83 9 84 3 85 1 86 3 88 0 88 8 89 9 89 8 90 3 

### 90 2 91 6 90 6 91 0 90 9 88 9 

### 89 0 87 6 85 7 

### 86 5 86 4 84 2 82 6 

### 81 9 78 8 77 1 75 0 74 5 74 5 71 9 70 5 71 6 69 1 67 6 66 3 64 2 62 5 60 4 59 8 57 9 

### Mea n Flo w Rat e - U G 

### (cfs )

404. 7 417. 2 454. 8 490. 0 472. 8 478. 2 482. 9 497. 8 500. 9 507. 2 516. 6 529. 9 536. 1 544. 7 544. 0 547. 9 547. 1 558. 1 550. 2 553. 4 

### 552. 6 536. 9 537. 7 526. 8 511. 9 

### 518. 1 517. 4 '500. 1 487. 6 

### 482. 1 457. 9 444. 6 

### 428. 2 424. 2 424. 2 403. 9 392. 9 401. 6 382. 0 370. 3 360. 1 343. 6 330. 3 

### 313. 9 309. 2 294. 3 

### Mixe d Cone

, 

### (ug/l )

0.6 4 0.6 4 0.6 4 0.6 3 0.6 3 0.6 3 0.6 3 0.6 3 0.6 3 0.6 3 0.6 3 0.6 3 0.6 3 0.6 3 

### 0.6 3 0.6 3 0.6 3 0.6 3 0.6 3 0.6 3 0.6 3 0.6 3 0.6 3 0.6 3 0.6 3 0.6 3 0.6 3 0.6 3 0.6 3 

### 0.6 3 0.6 4 0.6 4 0.6 4 0.6 4 0.6 4 0.6 4 0.6 4 0.6 4 0.6 4 0.6 4 0.6 5 0.6 5 0.6 5 0.6 5 0.6 5 0.6 6 

### Ran k

33 0 33 3 33 8 34 5 34 0 34 1 34 3 346 34 8 34 9 35 1 35 5 35 6 36 0 35 9 36 2 36 1 36 6 36 3 36 5 36 4 35 7 35 8 35 4 35 0 35 3 35 2 34 7 34 4 

### 34 2 33 9 337 

### 33 6 33 4 33 5 

### 32 8 32 5 32 6 32 4 31 9 31 5 29 7 28 5 26 8 

### 26 1 238 

### Prob

. o f Non

- Exceed

.

0.10 0.0 9 0.0 8 0.0 6 0.0 7 0.0 7 0.0 7 

### 0.0 6 0.0 5 0.0 5 0.0 4 0.0 3 0.0 3 0.0 2 0.0 2 0.0 1 0.0 2 0.0 0 0.01 0.01 0.0 1 0.0 3 0.0 2 0.0 4 0.0 5 0.0 4 0.0 4 0.0 5 0.0 6 

### 0.0 7 0.0 8 0.0 8 0.0 8 0.0 9 0.0 9 0.1 1 0.1 1 0.1 1 0.1 2 0.1 3 0.1 4 0.1 9 0.2 2 0.2 7 0.2 9 0.3 5 

### Probabilit y o f Occurrence

0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 

### 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7



### File : StatSig.xls Sheet : S b Summar y 

### Pag e 4 o f 8

# CO M Midval e Sla g OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Antimon y Concentration s i n th e Jorda n Rive r base d o n Mea n o f Dail y Mea n Flo w 

## Groun d Water/Surfac e Wate r Mixin g Parameter s Groun d wate r flo w rat e = 0.04 3 cf s Averag e groun d wate r concentratio n = 38 0 ug/ l Averag e surfac e wate r concentratio n = 0. 6 ug/ l Ma x = 0.7 0 M i n = 0.6 3

Mont h

7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 

### 8 8 8 8 8 8 8 8 8 8 8 8 8 8 

### 8 8 8 8 

### Da y

4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 21 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 1 

### 2 3 4 5 6 7 

### 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 

### Mea n Flo w Rat e - D G (cfs)

56 7 57 5 55 1 53 5 53 3 53 8 53 5 52 3 

### 519 512 49 4 49 4 49 0 49 4 48 5 48 0 47 5 47 6 48 5 50 1 50 3 50 2 49 9 48 0 47 7 47 0 46 1 46 3 45 6 44 9 43 6 43 4 44 2

. 42 8 42 0 41 6 41 4 40 9 41 7 41 0 41 6 41 1 41 6 42 3 42 1 42 8 

### Mea n Flo w Rat e - U G (cfs)

285. 0 

### 291. 2 272. 4 259. 9 258. 4 262. 3 259. 9 250. 5 247. 4 241. 9 227. 8 227. 8 224. 7 227. 8 220. 8 216. 9 213. 0 213. 8 220. 8 233. 3 234. 9 234. 1 231. 7 216. 9 214. 5 209. 1 202. 0 203. 6 198. 1 192. 6 182. 5 180. 9 187. 1 176. 2 169. 9 166. 8 165. 2 161. 3 167. 6 162. 1 166. 8 162. 9 166. 8 172. 3 170. 7 176. 2 

### Mixe d Cone

, (ug/l )

0.6 6 0.6 6 0.6 6 0.6 6 0.6 6 0.6 6 0.6 6 0.6 7 0.6 7 0.6 7 0.6 7 0.6 7 0.6 7

_ 0.6

7 0.6 7 0.6 8 0.6 8 0.6 8 0.6 7 0.6 7 0.6 7 0.6 7 0.6 7 0.6 8 0.6 8

_ 0.6

8 0.6 8 0.6 8 0.6 8 0.6 8 0.6 9 0.6 9 0.6 9 0.6 9 0.7 0 0.7 0 0.7 0 0.7 0 0.7 0 0.7 0 0.7 0 0.7 0 0.7 0 0.6 9 0.7 0 0.6 9 

### Ran k



### 22 4 22 8 22 1 21 4 21 2 21 7 21 5 20 8 20 6 20 5 19 0 19 1 18 7 19 2 17 8 17 4 16 6 16 8 17 9 198 20 3 20 1 19 6 17 5 17 0 16 0 14 2 14 7 13 4 10 8 5 4 5 1 7 2 4 1 2 5 1 4 8 2 2 0 4 1 5 5 1 6 3 5 2 7 4 2 

### Prob

. o f Non

- 

### Exceed

.

0.3 9 0.3 8 0.4 0 0.4 2 0.4 2 0.4 1 0.4 1 0.4 3 0.4 4 0.4 4 0.4 8 0.4 8 0.4 9 0.4 8 0.5 1 0.5 3 0.5 5 0.5 4 0.5 1 0.4 6 0.4 5 0.4 5 0.4 7 0.5 2 0.5 4 0.5 6 0.6 1 0.6 0 0.6 3 0.7 1 0.8 5 0.8 6 0.8 0 0.8 9 0.9 3 0.96 0.9 8 0.9 9 0.9 5 0.9 9 0.96 0.9 9 0.96 0.90 0.9 3 0.8 9 

### Probabilit y o f Occurrenc e

0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7



### File : StatSig.xls Sheet : S b Summar y Pag e 5 o f 8 

# I I I I 

# I I 

# I I 

# I 

# 1 

# I I I 

# I I 

# t I 1 I

# CO M Midval e Slag OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Antimon y Concentration s i n th e Jorda n River base d o n Mea n o f Dail y Mea n Flo w 

## Groun d Water/Surfac e Wate r Mixing Parameter s Groun d wate r flo w rat e = 0.04 3 cf s 

## Averag e groun d wate r concentratio n = 38 0 ug/ l Averag e surfac e wate r concentratio n = 0. 6 ug/ l Ma x = M in = 0.7 0 0.6 3

Mont h

8 8 8 8 8 8 

### 8 8 8 8 8 8 8 

### 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 

### 9 9 9 

### 9 9 9 9 9 9 9 9 9 9 9 1 0 1 0 1 0 

### Da y

1 9 2 0 21 2 2 

### 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 1 2 3 4 5 

### 6 7 8 9 1 0 1 1 1 2 

### 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 

### 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 1 2 3 

### Mea n Flo w Rat e - D G (cfs)

44 0 44 0 44 3 44 0 42 7 421 421 42 2 42 2 41 6 415 41 2 41 9 40 8 41 4 421 421 42 6 44 6 44 0 44 6 44 2 45 2 45 4 44 7 43 8 43 1 42 8 42 5 42 7 44 6 44 5 43 5 43 9 44 1 45 7 44 3 45 0 45 6 46 7 46 1 44 7 45 1 45 4 45 0 45 7 

### Mea n Flo w Rat e - U G (Cfs )

185. 6 185. 6 187. 9 185. 6 175. 4 170. 7 170. 7 171. 5 171. 5 166. 8 166. 0 

### 163. 7 169. 1 160. 5 165. 2 170. 7 170. 7 174. 6 

### 190. 3 185. 6 

### 190. 3 187. 1 195. 0 

### 196. 5 191. 1 184. 0 178. 5 176. 2 173. 8 175. 4 190. 3 189. 5 181. 7 184. 8 186. 4 198. 9 187. 9 193. 4 198. 1 206. 7 202. 0 191. 1 194. 2 196. 5 193. 4 198. 9 

### Mixe d Cone

, 

### (ug/l )

0.6 9 0.6 9 0.6 9 0.6 9 0.6 9 0.7 0 0.7 0 0.7 0 0.7 0 0.7 0 0.7 0 0.7 0 0.7 0 0.7 0 0.7 0 0.7 0 0.7 0 0.6 9 

### 0.6 9 0.6 9 

### 0.6 9 0.6 9 0.6 8 0.6 8 0.6 9 0.6 9 0.6 9 0.6 9 0.6 9 

### 0.6 9 0.6 9 0.6 9 

### 0.6 9 0.6 9 0.6 9 0.6 8 

### 0.6 9 0.6 8 0.6 8 0.6 8 0.6 8 0.6 9 0.6 8 0.6 8 

### 0.6 8 0.6 8 

### Ran k

6 1 6 2 8 0 6 3 3 9 2 8 2 9 3 2 3 3 17 1 0 6 2 2 1 

### 9 3 0 3 1 3 7 8 8 ' 6 4 

### 8 9 7 3 12 2 12 8 9 5 5 7

4 4 4 3 3 6 4 0 9 0 8 4 

### 5 2 5 9 6 8 13 6 8 1 11 3 13 5 15 4 14 3 9 6 11 8 12 9 11 4 13 7 

### Prob

. o f Non

- Exceed

.

0.8 3 0.8 3 0.7 8 0.8 3 0.8 9 0.9 2 0.9 2 

### 0.9 1 0.9 1 0.9 5 0.97 0.9 8 0.9 4 1.0 0 0.9 8 0.9 2 0.9 2 0.9 0 

### 0.7 6 0.8 3 0.7 6 0.8 0 0.6 7 0.6 5 0.7 4 0.8 4 0.8 8 0.8 8 0.9 0 

### 0.8 9 0.7 5 0.7 7 

### 0.8 6 0.8 4 0.81 0.6 3 0.7 8 0.6 9 0.6 3 0.5 8 0.6 1 0.7 4 0.6 8 0.6 5 0.6 9 0.6 3 

### Probabilit y o f Occurrence

0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 

### 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7



### File : StatSig.xls 

### Sheet : S b Summar y Pag e 6 o f 8

# CO M Midval e Slag OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Antimon y Concentration s i n th e Jorda n Rive r base d o n Mea n o f Dail y Mea n Flo w 

## Groun d Water/Surfac e Wate r Mixin g Parameter s Groun d wate r flo w rat e = 0.04 3 cf s Averag e groun d wate r concentratio n = 38 0 ug/ l Averag e surfac e wate r concentratio n = 0. 6 ug/ l Max

=

0.7 0 M i n = 0.6 3

Mont h

1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 

### 1 0 

## 1 1 1 1 1 1 1 1 

## 1 1 1 1 1 1 1 1 1 1 1 1 

## 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Da y -

4 

### 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 17 1 8 1 9 2 0 21 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 17 1 8 

### Mea n Flo w Rat e - D G (cfs)

45 7 45 0 44 8 46 2 46 1 45 0 45 4 45 8 46 3 45 2 46 4 46 5 45 5 42 6 41 9 42 2 42 0 415 41 9 41 2 41 5 40 9 41 7 43 1 41 5 416 43 2 43 8 43 1 44 3 43 1 41 6 43 2 43 2 43 5 44 6 44 0 43 9 44 0 44 2 44 2 44 4 44 2 441 43 7 441 

### Mea n Flo w 

### Rat e - U G (cfs)

198. 9 193. 4 191. 8 202. 8 202. 0 193. 4 196. 5 199. 7 203. 6 195. 0 204. 4 205. 1 197. 3 174. 6 169. 1 171. 5 169. 9 166. 0 169. 1 163. 7 166. 0 161. 3 167. 6 178. 5 166. 0 166. 8 179. 3 184. 0 178. 5 187. 9 178. 5 166. 8 179. 3 179. 3 181. 7 190. 3 185. 6 184. 8 '185. 6 187. 1 187. 1 188. 7 187. 1 186. 4 183. 2 186. 4 

### Mixe d Cone

, 

### (ug/l )

0.6 8 0.6 8 0.6 9 0.6 8 0.6 3 0.6 8 0.6 8 0.6 8 0.6 8 0.6 8 0.6 8 0.6 8 0.6 8 0.6 9 0.7 0 0.7 0 0.7 0 0.7 0 0.7 0 0.7 0 0.7 0 0.7 0 0.7 0 0.6 9 0.7 0 0.7 0 0.6 9 0.6 9 0.6 9 0.6 9 0.6 9 0.7 0 0.6 9 0.6 9 0.6 9 0.6 9 0.6 9 0.6 9 0.6 9 0.6 9 0.6 9 0.6 9 0.6 9 0.6 9 0.6 9 0.6 9 

### Ran k

13 8 11 5 10 2 14 5 14 4 11 6 13 0 14 0 14 8 123 15 0 15 2 13 2 3 8 2 3 3 4 2 6 1 1 2 4 7 1 2 3 21 4 5 1 3 1 8 4 8 5 8 4 6 8 2 4 7 1 9 4 9 5 0 5 3 91 6 5 6 0 6 6 7 4 7 5 8 3 7 6 6 9 5 6 7 0 

### Prob

. o f Non

- 

### Exceed

.

0.6 2 0.6 9 0.7 2 0.6 0 0.6 1 0.6 8 0.6 5 0.6 2 0.6 0 0.6 6 0.5 9 0.5 9 0.6 4 0.9 0 0.9 4 0.9 1 0.9 3 0.9 7 0.9 3 0.9 8 0.9 7 0.9 9 0.9 4 0.8 8 0.96 0.9 5 0.87 0.8 4 0.8 7 0.7 8 0.87 0.9 5 0.8 7 0.8 6 0.8 6 0.7 5 0.8 2 0.8 4 0.8 2 0.8 0 0.8 0 0.7 7 0.7 9 0.8 1 0.8 5 0.8 1 

### Probabilit y o f Occurrenc e

0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7



### File : StatSig.xl s Sheet : S b Summar y 

### Pag e 7 o f 8 

# I 1 

# I I 

# I I I 

# I 

# I I t i i 1 i 

# i i i i

# CO M Midval e Sla g OU 2 3282-986-FSZ-DGRC

Z 

## Estimate d Antimon y Concentration s i n th e Jorda n Rive r base d o n Mea n o f Dail y Mea n Flo w Groun d Water/Surfac e Wate r Mixin g Parameter s 

## Groun d wate r flo w rat e = Averag e groun d wate r concentratio n = Averag e surfac e wate r concentratio n = 0.04

3 cf s 38 0 ug/ l 0. 6 ug/ l Max

=

0.7 0 Min

= 0.6 3

Mont h

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 

### 1 2 1 2 

### 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 

### 1 2 1 2 1 2 1 2 1 2 1 2 1 2 

### Da y

1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 1 

### 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 21 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 

### Mea n Flo w 

### Rat e - D G (cfs)

44 1 43 6 44 0 44 2 44 2 44 5 45 0 44 2 44 8 44 9 44 8 44 7 44 8

. 44 7 44 5 45 1 44 5 44 7 45 1 45 2 44 8 44 8 45 5 44 9 45 2 44 9 45 7 45 3 44 9 44 7 44 7 44 6 44 6 44 6 45 1

. 45 4 45 3 45 9 46 3 46 2 46 4 47 6 47 4 

### Mea n Flo w 

### Rat e - U G (cfs)

186. 4 182. 5 185. 6 187. 1 187. 1 189. 5 193. 4 187. 1 191. 8 192. 6 191. 8 191. 1 191. 8 191. 1 189. 5 194. 2 189. 5 191. 1 194. 2 195. 0 191. 8 191. 8 197. 3 192. 6 195. 0 192. 6 198. 9 195. 8 192. 6 191. 1 191. 1 190. 3 190. 3 190. 3 194. 2 196. 5 195. 8 200. 4 203. 6 202. 8 204. 4 213. 8 212. 2 

### Mixe d Cone

, 

## (ug/i )

0.6 9 0.6 9 0.6 9 

### 0.6 9 0.6 9 0.6 9 0.6 8 0.6 9 0.6 9 0.6 8 0.6 9 0.6 9 0.6 9 0.6 9 0.6 9 0.6 8 0.6 9 0.6 9 0.6 8 0.6 8 0.6 9 0.6 9 0.6 8 0.6 8 0.6 8 0.6 8 0.6 8 0.6 8 0.6 8 0.6 9 0.6 9 0.6 9 0.6 9 0.6 9 0.6 8 0.6 8 0.6 8 0.6 8 0.6 8 0.6 8 0.6 8 0.6 8 0.6 8 

### Ran k

7 1 5 5 6 7 7 7 7 8 8 5 11 7 7 9 10 3 10 9 10 4 9 7 10 5 9 8 8 6 

### 1 1 9 8 7 9 9 

### 12 0 12 4 10 6 10 7 13 3 11 0 12 5 1 1 1 13 9 12 6 11 2 10 0 10 1 9 2 9 3 9 4 12 1 13 1 12 7 14 1 14 9 14 6 15 1 16 9 16 5 

### Prob

. o f Non

- 

### Exceed

.

0.81 0.8 5 0.8 2 0.7 9 0.7 9 0.7 7 0.6 8 0.7 8 0.7 2 0.7 0 0.7 2 0.7 4 0.7 1 0.7 3 0.7 7 0.6 8 0.7 6 0.7 3 0.6 7 0.6 6 0.7 1 0.7 1 0.6 4 0.7 0 0.6 6 0.7 0 0.6 2 0.6 6 0.6 9 0.7 3 0.7 2 0.7 5 0.7 5 0.7 4 0.6 7 0.6 4 0.6 5 0.6 2 0.5 9 0.6 0 0.5 9 0.5 4 0.5 5 

### Probabilit y o f 

### Occurrence

0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.0027 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7 0.002 7



### File : StatSig.xl s 

### Sheet : S b Summar y 

### Pag e 8 o f 8

# I

I Attachmen t C Calculatio n o f Arseni c Concentration s at I Discret e Location s 

# 1 l I I I 1 I I I I t I I I I I

# CO M Midval e Sla g OU 2 By : B

. Cotto n 8/26/200 2 3282-986-FSZ-FGRC

Z Ck : MJ S 8/30/200 2 

## Maximu m Allowabl e Concentration s Withi n Arseni c Plum e Segment s i n th e US& G Aquife r 

# I I 

# I

I Objectiv e - Estimat e allowabl e concentration s withi n discret e segment s o f th e arsenic plum e i n th e US& G 

## Aquife r tha t wil l no t resul t i n exceedanc e o f th e averag e allowabl e discharg e limit

. _ Method

- " T h e arsenic contaminan t plum e observe d withi n th e US& G Aquife r generall y ha s highe r concentration s in th e cente r o f th e plum e tha n o n th e edge s o f th e plum e du e t o dispersio n o f th e m contaminan t durin g transpor t fro m th e sourc e area

. Th e maximu m allowabl e averag e groundwate r B

t o surfac e wate r discharg e concentratio n ha s been calculate d fo r th e entir e plum e (se e references)

. Calculatio n o f th e maximu m allowabl e discharg e concentratio n a t variou s discret e location s withi n t h e plume s fo r plum e provide s specifi c informatio n tha t ca n b e used fo r monitorin g an d assessmen t 

## purposes

. This calculatio n is performe d a s follows : 1 Existin g dat a was examine d an d th e aeria l distributio n o f th e arsenic plum e was segmente d I t int o a series o f "flo w tubes"

. Eac h flo w tub e represent s a discret e widt h o f a constituen t Q 

## plum e tha t i s (o r may ) discharg e t o th e Jorda n River

. Th e plum e i s segmente d base d o n flo w ne t principle s usin g existin g concentration s a s a guide

. m 

## 2 Th e maximu m allowabl e discharg e concentratio n i n a flo w tub e i s calculate d a s follows : • C -Cob s * P e where : M C

= Maximu m allowabl e averag e groundwate r discharg e concentratio n i n t h e downgradien t portio n o f th e flo w tub e Cob s = Observe d averag e groundwate r discharg e concentratio n in th e 

## downgradien t portio n o f th e flo w sectio n P e = Plum e expansio n facto r 

## T h e plum e expansio n facto r represent s th e amoun t tha t th e entir e plum e ca n increas e i n concentratio n withou t exceedin g th e tota l allowabl e loadin g t o th e river

. Thi s i s calculate d a s follows : 

## P e = Cgw/Cpre s where : 

## C g w = Calculate d maximu m allowabl e averag e groundwate r discharg e fo r entir e plum e base d o n standar d Cpre s = Calculate d presen t plum e averag e groundwate r discharg e 

## T h e presen t averag e groundwate r discharg e concentratio n i s th e su m o f th e th e incrementa l loadin g fo r eac h flo w section

. Th e incrementa l loadin g fro m eac h ^ 

## flo w tub e i s calculate d a s follows : • I

= Cob s * P f * 

## where : I

= Incrementa l loa d fro m th e correspondin g flo w section

. • > P f

= Plum e flo w weightin g facto r TM 

## T h e plum e flo w weightin g facto r represent s th e amoun t tha t th e plum e segmen t contribute s du e t o flo w relativ e t o th e entir e plum e contribution

. This is foun d b y f t dividin g th e widt h o f th e plum e segmen t b y th e widt h o f th e entir e plume

. P 

# I I I 

# I

File : POA-Conc-As.xl s 

### Pag e 1 o f 3 

# I I 

# I

# I I I I I 

# I 

# 1 I 

# I 

# I 1 I 

# i t i i i i i CO M Midval e Sla g OU 2 By : B

. Cotto n 3282-986-FSZ-FGRC

Z Ck : MJ S 

## Maximu m Allowabl e Concentration s Withi n Arseni c Plum e Segment s i n th e US& G Aquife r 8/26/200 2

8/30/200 2 

## Assumption s - 

## T h e followin g assumption s ar e mad e i n orde r t o make thes e calculations : 1 Th e relativ e concentration s withi n plum e segment s i s constan t overtime

, i.e

. increases in plum e concentratio n i n th e various flo w segment s wil l alway s b e proportional

. 

## 2 Th e plum e concentratio n i s assume d t o increas e linearl y ove r time

. 3 Plum e widt h an d thicknes s ar e assume d t o b e constant

. Calculation s - 

## Maximu m concentration s o f A s observe d in monitorin g well s ove r th e perio d fro m 199 7 t o 200 1 ar e plotte d o n th e attache d drawing

. Groundwate r altitud e contour s fo r 200 1 ar e als o plotte d o n thi s drawing

. Th e constituen t plum e ha s been segmente d s o tha t eac h extend s fro m th e source area s 

## upgradien t t o th e discharg e poin t a t th e Jorda n River

. Plum e segmen t dat a plum e i s summarize d in t h e followin g tables

. Th e incrementa l concentration

, I

, an d th e tota l flo w weighte d averag e 

## concentration

, Cpres

, ca n b e calculate d fro m thi s information

. Plum e Segmen t 1 2 3 4 5 

## Tota l 

## Widt h ( m )

18 5 9 0 9 0 10 0 185 65 0 P f 

## (fraction )

0.2 8 0.14 0.14 0.1 5 0.2 8 1.00 

## Observe d Cone

. (ug/L )



## 16 0 130 0 190 0 100 0 45 0 I (ug/L-ft )

4 6 180 26 3 15 4 128 77 1 

## Cpre s = 7 7 1 ug/L-f t

Pe

= 8.22 3 Cgw

= 633 6 

## ug/L-f

t based o n th e Clas s 4 classificatio n in UA C 317- 2 Plum e 

## Segmen t 1 2 3 4 5 Tota l 

## Cob s 

## (ug/L )

16 0 130 0 190 0 100 0 45 0 C 

# (ug/L )

1,31 6 10,69 0 15,62 3 8,223 3,70 0 

## Incrementa l Loa d (ug/L-ft ) 

## 37 4 1,48 0 2,16 3 1,26 5 1,05 3 6,33 6

File : POA-Conc-As.xl s 

### Pag e 2 o f 3

# CO M Midval e Sla g OU 2 By : B

. Cotto n 3282-986-FSZ-FGRC

Z Ck : MJ S 

## Maximu m Allowabl e Concentration s Withi n Arseni c Plum e Segment s i n th e US& G Aquife r 8/26/200 2

8/30/200 2

Pe

= 3.72 5 Cgw

= 287 0 

## ug/L-f t based o n statistica l sig

. relativ e t o surfac e wate r qualit y 

## Plum e Segmen t 1 2 3 4 5 

## Tota l



## ; Cob s 

# (ug/L )

16 0 130 0 190 0 1000 45 0 C 

# (ug/L )

59 6 4,84 2 7,077 3,72 5 1,676 

## Incrementa l Loa d (ug/L-ft ) 

## 17 0 67 0 98 0 57 3 47 7 2,87 0



## Reference s - C O M 2002

. Maximu m allowabl e averag e discharg e concentratio n fo r th e US& G Aquife r base d o n 

## surfac e wate r qualit y criteria

. Calculatio n brie f Augus t 2002

. C O M 2002

. Maximu m allowabl e averag e discharg e concentration s i n US& G Aquife r base d o n 

## statisticall y significan t increase

. Calculatio n brie f Augus t 2002

. C O M 2002

. Estimate d groundwate r info w rates ; arsenic

, cadmium

, selenium

, an d antimon y plumes

. 

## Calculatio n brief s presente d i n Appendi x C o f th e Groundwate r FFS

. "CO M 2001

. Jorda n Rive r lo w flo w evaluation

. Calculatio n brie f presente d i n Appendi x C o f th e Groundwate r FFS

.

File : POA-Conc-As.xl s Pag e 3 o f 3 

# I 

# I I 

# i 1 I 

# I I 1 

# I 1 I 

# I I I 

# 1 I I I2254400

2254200

-

2254000

-

2253800

-

2253600

-

2253400

-

2253200

-

2253000

-

225280 0 46430 0 46450

0 

## i

r 46490 0 I

T 46510 0 46530

0



### 429 0 Maximu m Arseni c Concentratio n (ug/L ) US& G Groundwate r Elevatio n (2001 ) 

## Contou r interva l

= 0. 5 f t Plum e Segmen t Boundar y 

## A 

# N

meter s 

# Figur e

1 Maximu m Dissolve d Arsenic US& G Aquifer

, 1997-200 1 Midval e Sla g Superfun d Sit e Midvale

, Uta h