### Need to return call by / at/between and

. Signature: Project No.: 

## 0172.0 9.005.410 Page 1 of 1

Project Name: 

## 201 2 Final Cat Rev 

# CBI?

Yes

No TELEPHONE CALL RECOR D

Incoming

Outgoing Date: 

## 02/28/12 Time: 

## 9:45 am

pm

Company Name: 

## EPA Region 10 ERG Staff Name: 

## Kimberly Landick

Contact Name: 

## Brian Nickel Contact Phone Number: 

## (206 ) 553

- 6251

General Subject: 

## 2009 High Volume Dioxin Sampling at Pulp Mills



# TOPICS DISCUSSED AND ACTION TAKEN

On February 28 , 201 2 at 9:45 am I called Patty McGrath (206

- 553

- 0979) and left a message.

On March 16, 2012 at 1pm I called Mike Cox (206

- 553

- 1597, Environmental Assessment Section) and left a

message

.

On March 23, 2012 I called Mike Cox and left a message.

On April 4, 2012 I called Mike Cox and left a message, his recording said he would be out until April 9 th



## .

O n April 9, Mike Cox returned my call and stated that he was not the correct person to ask about high volume

sampling. He told me to contact Mike Lidgard at 206

- 553

- 1755; he is the head of the NPDES permit division

for Region 10. A t 1:15pm I called M i ke Lidgard and left a message.

On April 10, Brian Nickel (206

- 553

- 6251) returned my call and said that Mike Lidgard had passed my request

on to him. He stated that the high volume sampling was done mostly to negate concerns about endangered

species and fish consumption in tribal populations. There was the need to obtain more sensitive monitoring of

dioxin/furans so the high volume sampling was conducted. He stated that a canister filter was used but that they

tested many different filters before finding one that worked. A high volume of wastewater would be pumped

with a positive displacement pump and the results would b e analyzed on a filter. No real concerns resulted from

this sampling and a new permit limit has not been set. The sampling was not done to determine compliance so it

was not NPDES approved. Therefore, the data could not be used to set a new permit limit, t he permit limits are

set using water quality criteria (based on a TMDL for the watershed and further reduced based on the State of

Washington requirements). The facility is right on the border of Idaho and Washington (400 ft upstream of WA)

so they have to abide by WA requirements as well. A new permit has not been reissued as a result of the

sampling. Mr. Nickel stated that he would double check his files and send me copies of the reports in the next

few weeks. Please see the attached email correspondence.

## Email Correspondence with Brian Nickel, EPA Region 10

From: Kimberly Landick

To: Brian Nickel

Date: 4/10/12 2:53 PM

Subject: Re: Fw: Clearwater Paper (formerly Potlatch) high

- volume effluent sampling

Hi Brian,

Thank you for sending me this information. I will look over it and let you know if I have any

further questions.

Thanks again,

Kimberly

----------------------------------------

Kimberly D. Landick

Environmental Engineer

Eastern Research Group, Inc.

14555 Avion Parkway, Suite 200

Chantilly, VA 20 151

kimberly.landick@erg.com

Phone: 703

- 633

- 1119

From: Brian Nickel ( Nickel.Brian@epamail.epa.gov )

To: Landick, Kimberly

Date: 4/10/12 12:58PM

Subject: Fw: Cle arwater Paper (formerly Potlatch) high

- volume effluent sampling

Kimberly:

I'm resending this message because I had mistyped your e

- mail address.

Thanks,

Brian Nickel, E.I.T.

Environmental Engineer

US EPA Region 10 | Office of Water and Watersheds | NPDES Permits Unit

Voice: 206

- 553

- 6251 | Toll Free: 800

- 424

- 4372 ext. 6251 | Fax: 206

- 553

- 0165

Nickel.Brian@epa.gov

http://epa.gov/r10earth/waterpermits.htm

Please conserve natural resources by not printing this message.

----- Forwarded by Brian Nickel/R10/USEPA/US on 04/10/2012 09:52 AM

-----

From: Brian Nickel/R10/USEPA/US

To: kimberly.landic@erg.com

## Date: 04/10/2012 09:17 AM

Subject: Clearwater Paper (formerly Potlatch) high

- volume effluent sampl ing

Kimberly:

As a follow

- up to our phone conversation this morning, I had the high

- volume sampling reports

as PDFs in my own files. They are attached.

Thanks,

Brian Nickel, E.I.T.

Environmental Engineer

US EPA Region 10 | Office of Water and Water sheds | NPDES Permits Unit

Voice: 206

- 553

- 6251 | Toll Free: 800

- 424

- 4372 ext. 6251 | Fax: 206

- 553

- 0165

Nickel.Brian@epa.gov

http://epa.gov/r10earth/waterpermits.htm

Please conserve natural resources by not printing this message.

(See attached file: 2006

- 01

- 10 Potlatch ESA Surface Water Report.pdf)(See attached file:

Potlatch 2006 ESA Monitoring Report.pdf)(See attached file: 2008

- 01

- 10 2007 High Volume

Sampling Report.pdf)

## Notes from Region 10 Pulp & Paper Data

– High Volume Sampling

May 2, 2012

Tier 1 Endangered Species Act Monitoring and NPDES Permit Compliance Monitoring

*Can add actual dioxin results if necessary*

The Potlatch Corporation

– Lewiston Facility (now called Clearwater Paper) is located just over

the Washington border in Lewiston, Idaho.

**•** NPDES ID: ID00001163

**•** Discharges treated wastewater via outfall 001 to the Snake River

**•** Flow is approximately 34 MGD (as of 2005) and the facility’s NPDES ID was r e

- issued

on May 1, 2005

**•** “Because EPA’s re

- issuance of the Facility’s NPDES permit constituted a discretionary

action that could beneficially or adversely affect threatened and endangered species or

their critical habitat in the vicinity of the discharge, E PA was required to consult with the

U.S. Fish and Wildlife Service (USFWS) and the National Marine Fisheries Service

(NOAA Fisheries) (collectively referred to as “the Services”) as specified in the

Endangered Species Act.” By consulting with the Services, it was determined that the

reissuance of the permit is not likely to jeopardize the surrounding waterways. However,

a monitoring and assessment plan was required.

**•** The Tier 1 study is the first step in the monitoring and assessment plan

January 2006 Report

– considers 2005 sampling results

**•** Purpose: to present the results of the Tier 1 monitoring and assessment plan that

evaluated the effluent and natural waters above and below the Facility. Trace organic

compounds and dioxin/furans were the pollutants principally addressed and a specialized

sampling technique known as High Volume Sampling was performed.

**•** Sampling was conducted from 8/24/05 to 8/31/05 and from 11/13/05 to 11/19/05

(November sampling results presented in the 2007 report).

**•** See dioxin resul ts in Figure 1 & 2 below.

**•** Conclusions: the results of the study revealed no indications that the Facility’s effluent

has any influence on downstream parameter measurements. “With a few exceptions, all

measurements complied with toxicity benchmarks and appl icable water quality standards.

The few exceptions occurred at reference locations or at the farthest downstream

sampling location from the facility.”

## Figure 1: Dioxins in Effluent, 2005

Figure 2: Furans in Effluent , 2005

January 2007 Report

– considers 200 6 sampling results

**•** Samples conducted on November 2005, March 2006, June 2006 and September 2006.

**•** “As with 2005, 2,3,7,8

- TCDD was not detected in any sample on any date during the

study.

## • Conclusions: the results of the study revealed no indications that the Facility’s effluent

has any influence on downstream parameter measurements.

January 2008 Report

– considers 200 7 sampling results

**•** Samples conducted in March and June 2007.

**•** “In conclusion, the results of sampling and analysis upstream and downstream of the

Facility are consistent with the finding in EPA’s Biological Evaluation and the Services’

Biological Opinions that the EPA’s re

- issuance of Potlatch’s NPDES permit is not likely

to jeopardize the continued existence of Snake River steelhead, Snake River

spring/summer and fall Chinook salmon, and Snake River sockeye salmon, nor result in

the destruction or adverse modification of designated critical habitat for Snake River

spring/summer and fall Chinook salmon and Snake River s ockeye salmon.”

### Tier 1 Endangered Species Act Mo nitoring and

NPDES Co mpliance Monitoring

Studies Conducted in 20 06

Potlatch For est Products Corporation

Lewiston Fa cility

Submitted to:

Potlatch Forest Produc ts Corporation

Lewiston, Id aho

Submitted by:

AMEC Earth & Environmental



### Westford, Massachu s ett s

January 2007

7 7050 0900Potlatch F o rest Products Corp oratio n

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 06

Le w i st on, ID

Janu ar y 20 07



### TABLE OF CONT ENTS

Page

1.0 INTRODUCTION

.................................................................................................................. 1

2.0 FIELD SA MPLING AND ANALYTI C AL MET H ODS

........................................................... 3

2.1 FIELD SAMPLING

....................................................................................................... 3

2.1.1 Weekly Receiving Water Monitoring Study Sa mp ling Methods

....................... 3

2.1.2 Quarterly Surface Wate r and Effluent Study Sa mpling Meth ods

..................... 4

3.0 DATA HANDLING MET H ODS

............................................................................................ 7

3.1 FIELD DAT A

................................................................................................................ 7

3.2 ANALYTICAL DATA

.................................................................................................... 7

4.0 RESULT S

........................................................................................................................ .... 8

4.1 WEEKLY RECEIVING WATER MONITORI NG STUDY

............................................. 8

4.1.1 Field-Measured Paramet e rs

............................................................................ 8

4.1.1.1 Water Velocity

................................................................................... 8

4.1.1.2 pH

..................................................................................................... 9

4.1.1.3 Dissolved Oxygen

............................................................................. 9

4.1.1.4 Water Temperature

........................................................................... 9

4.1.2 Conventional Parameters

.............................................................................. 10

4.1.2.1 Total Suspe nded Solids

.................................................................. 10

4.1.2.2 Biochemical Oxygen De mand

......................................................... 10

4.1.2.3 Nutrients

......................................................................................... 11

4.1.2.4 Ammonia Nitrogen

.......................................................................... 11

4.1.2.5 Nitrate/Nitrite Nitrogen

.................................................................... 11

4.1.2.6 Total Kjelda hl Nitrogen

................................................................... 12

4.1.2.7 Total Phosphorus

............................................................................ 12

4.1.2.8 Orthophosphate Phosphorus

.......................................................... 12

4.1.2.9 2,3,7,8-TCDD

.................................................................................. 13

4.1.2.10 2,3,7,8-TCDF

.................................................................................. 13

4.2 QUARTERL Y SURF ACE WATER AND EFFLUENT MONIT O RING STUDY........... 13

4.2.1 Resin Acids

.................................................................................................... 13

4.2.2 Phytosterols

................................................................................................... 15

4.2.3 Chlorophenolics

............................................................................................. 17

4.2.4 Chloroform

..................................................................................................... 18

4.2.5 Dissolved and Total Organic Carbon

............................................................. 19

4.2.6 Dioxin Cong eners

.......................................................................................... 19

4.2.7 Furan Congeners

........................................................................................... 20

5.0 SUMMA R Y AND CON C L USIONS

.................................................................................... 23

REFERENCES

..................................................................................................................... ...... 24

Page iPotlatch F o rest Products Corp oratio n

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 06

Le w i st on, ID

Janu ar y 20 07



### TABLE OF CONT ENTS

Page

LIST OF FI GUR ES

Figure 1 – L o cations for Sediment, Benthic Community, and Receiving Water Samp les

Weekly Results

Figure 2 – Mean Water Velocity

Figure 3 – Mean Water pH

Figure 4 – Mean Water Dissolved Oxygen

Figure 5 – Mean Water Temperature

Figure 6a – Biochemical Oxygen De mand in Shallow Surface Water

Figure 6b – Biochemical Oxygen De mand in Mid

- Depth Surface Water

Figure 7a – Ammonia Nitrogen in Shallow Surface Water

Figure 7b – Ammonia Nitrogen in Mid-Depth Surface Water

Figure 8a – Nitrate/Nitrite Nitrogen i n Shallow Surface Wate r

Figure 8b – Nitrate/Nitrite Nitrogen i n Mid-Depth Surface Water

Figure 9a – Total Kjelda hl Nitrogen i n Shallow Surface Wate r

Figure 9b – Total Kjelda hl Nitrogen i n Mid-Depth Surface Water

Figure 10a – Total Phosphorus in S hallow Surface Water

Figure 10b – Total Phosphorus in Mid-Depth Surface Wate r

Figure 11a – Orthophosphate Phosphorus in S hallow Surface Water

Figure 11b – Orthophosphate Phosphorus in Mid-Depth Surface Water

Quarterly Results

Figure 12 – Quarterly Resin Acids i n Receiving Water

Figure 13 – Quarterly Resin Acids i n Effluent

Figure 14 – Quarterly Phytosterols i n Receiving Water

Figure 15 – Quarterly Phytosterols i n Effluent

Figure 16 – Quarterly Chlorophenol s in Receivi ng Water

Figure 17 – Quarterly Chlorophenol s in Effluent

Figure 18 – Quarterly Chloroform Concentration s

Figure 19 – Quarterly Physical Parameters in Receiving Water

Figure 20 – Quarterly Di oxins in Receiving Water

Figure 21 – Quarterly Di oxins in Effl uent

Figure 22 – Quarterly Fu rans in Receiving Water

Figure 23 – Quarterly Fu rans in Efflu ent

LIST OF TA BLES

Table 1 – Sample Locations

Table 2 – Mean Velocity Results fro m W eekly Receiving Water Monitoring Study

Table 3 – Mean pH Results from Week ly Receiving Water Monitoring Study

Table 4 – Mean Water Dissolved Oxygen (DO) Results fro m Weekly Receiving Water

Monitoring Study

Table 5 – Mean Temperature Result s from W eekly Receiving Water Monitoring Stu d y

Page i iPotlatch F o rest Products Corp oratio n

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 06

Le w i st on, ID

Janu ar y 20 07



### TABLE OF CONT ENTS

Page

Table 6 – T o tal Suspen ded Solids ( T SS) Results from Weekly Receiving Water Monitoring

Study

Table 7 – Bi ochemical Oxygen Demand (BOD) Results fro m Weekly Receiving Water

Monitoring Study

Table 8 – Ammonia Nitrogen Result s from Weekly Receiving Water Monitoring Stu d y

Table 9 – Ni trate/Nitrite Nitrogen Results from Weekly Receiving Water Monitoring Study

Table 10 – Total Kjelda hl Nitrogen Results fro m Weekly Receiving Water Monitoring Study

Table 11 – Total Phosp horus Resul t s from Weekly Receiving Water Monitoring Stu d y

Table 12 – Orthophosphate Phosphorus Resul t s fr om Weekly Receiving Water Monitoring

Study

Table 13 – 2,3,7,8-TCDD Results from Weekly Receiving Water Monitoring Study

Table 14 – 2

, 3,7,8-TCDF Results fro m W eekly Receiving Water Monitoring Study

Table 15 – Resin Acid, Chloroform, Phytosterol and Physical Parameter Results fro m the

Quarterly Surface Wate r and Effluent Monitoring Study: No vember 200 5

Table 16 – Resin Acid, Chloroform, Phytosterol and Physical Parameter Results fro m the

Quarterly Surface Wate r and Effluent Monitoring Study: Ma rch 2006

Table 17 – Resin Acid, Chloroform, Phytosterol and Physical Parameter Results fro m the

Quarterly Surface Wate r and Effluent Monitoring Study: June 2006

Table 18 – Resin Acid, Chloroform, Phytosterol and Physical Parameter Results fro m the

Quarterly Surface Wate r and Effluent Monitoring Study: Se ptember 2006

Table 19 – Chlorophenol Results fr om the Quarterly Surface Water and Effluent Monitoring

Study: No ve mber 2005

Table 20 – Chlorophenol Results fr om the Quarterly Surface Water and Effluent Monitoring

Study: Marc h 2006

Table 21 – Chlorophenol Results fr om the Quarterly Surface Water and Effluent Monitoring

Study: June 2006

Table 22 – Chlorophenol Results fr om the Quarterly Surface Water and Effluent Monitoring

Study: September 2006

Table 23 – Dioxin and Furan Congener Result s from the Quarterly Surface Water a nd Effluent

Monitoring Study: No ve mber 2005

Table 24 – Dioxin and Furan Congener Result s from the Quarterly Surface Water a nd Effluent

Monitoring Study: Marc h 2006

Table 25 – Dioxin and Furan Congener Result s from the Quarterly Surface Water a nd Effluent

Monitoring Study: June 2006

Table 26 – Dioxin and Furan Congener Result s from the Quarterly Surface Water a nd Effluent

Monitoring Study: September 2006

LIST OF AP PENDI CES

Appendix 1 – Field Data Reports

Appendix 2 – Analytical Laboratory Reports

Appendix 3 – Validation Reports

Page i i iPotlatch F o rest Products Corp oratio n

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 06

Le w i st on, ID

Janu ar y 20 07



### 1.0 INTRODUCTION

The Potlatch Forest Products Corporation - Lewiston Facility (“the Facility”) is owned a nd

operated by Potlatch F o rest Products Corporation (“Potlat ch”), which has its hea dquarters in

Spokane, Washington. The Facilit y is located appr oximately one mile east of th e Clearwater

Memorial Bridge in Lewiston, Idaho. It is situat ed on the south bank of the Clearwater River

approximate l y three mile s east of the confluence of the Cle a rwater and Snake Rive r (Figure 1).

The Facility discharge s treated wastewater v ia a submerged 48 inch diameter, 400 foot long

multiport dif fuser locate d in the co nfluence. The diffuser is referred to as Outfall 001 (“th e

Outfall”). EPA has recently reissued Potl atch’s National Pollutant Discharge Elimination

System (NPDES) Permi t No. ID000 01163, authoriz ing discharge from the Outfall, to the Snak e

River and seeps from t he seconda ry treatment pond to th e Clearwater River. T he Facil ity

discharges approximate l y 34 million gallon s a d a y of treate d effluent fr om the Outfall into the

Snake Rive r under NPDES permit No. ID000 01163, which was re-issued by EPA on Ma y 1

, 2005.

Because EPA’s re-issuance of the Facility’s NPD ES permit constituted a discretionary action

that could b eneficial ly or adversely affect threat ened and e ndangered species or t heir crit ica l

habitat in the vicinity of the dischar ge, EPA wa s required t o consult with the U. S. Fish and

Wildlife Ser v ice (USF WS) and the National Marine Fisheries Ser v ice (NOAA Fisheries)

(collect i vely referred to as “the Services”) as specified in the Endangered Species Act. EPA

prepared a Biological E v aluation (BE) to evalua te whet her the reissuan ce of the permit migh t

affect speci e s and/or their critica l habitat under the jurisdict ion of both the USFWS and NOAA

Fisheries. Subsequent to NOAA F i sheries’ and USFWS’ review of th e BE, the two agencies

prepared Biological Opi nions (BO) consistent with the requirements of the ESA. NOAA

Fisheries’ BO conclude d that the reissuance of the permit “is not likely to jeo pardize the

continued e x istence of Snake River steelhead, Snake River spring/su mmer and fall Chinook

salmon, and Snake River sockeye salmon, nor res ult in the destruction or adverse modification

of designate d critica l ha bitat for Snake River spring/summer and fall Chin ook salmon and Snake

Riv e r sockey e salmon.”

Although the NOAA Fisheries BO concluded th at the permit reissuance would not jeopardize the

continued e x istence of the listed species, t he BO specified non-d i scretionary terms and

conditions which must be met by EPA and Potlatch to minimize “take” of listed species as a

result of per mit reissuan ce. One of t he non-discretionary terms and con ditions specified in the

BO was implementation of a mon i toring and assessment plan to ch aracterize conditions in

effluent, re ceiving water, sediment, and biological med ia in the vicinity of the Facility.

Attachment 1 to the per mit provides a summa ry of the requir ed monitoring and a sch edule for its

implementation. The monitoring pl an summary identifies several Tier 1 studies that must b e

performed d u ring the first two years of the permit, as well as Tier 2 studi es that may or may not

be performed during later years of the permit, dependin g upon the outcomes of the Tier 1

studies.

Page 1Potlatch F o rest Products Corp oratio n

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 06

Le w i st on, ID

Janu ar y 20 07



### The purpose of this report is to present the results of ESA Tier 1 s t udies undertaken during

2006 that evaluate effluent and natural waters above and below the F a cility. In p a rticular, thi s

sampling was performed to fulf ill re quirements of the Surfa c e Water an d Effluent St udy, and the

Receiving Water Monitoring Study, that are de scribed in d e tail in Appendix A and Appendix H,

respectively, of the Quality Assurance Projec t Plan (QAPP) for Tier 1 Endangered Species Act

and NPDES Permit Compliance Monitoring (AMEC, 200 5). Other studies pr oposed to be

conducted d u ring 2006 were postponed due to d r edging acti vities performed by the USACE.

The Surface Water and Effluent Study principall y addresses the measurement of trace organic

compounds and dioxin s/furans (so m e of which are requir ed for compliance with the NPDES

permit). To do this, a special ized sampling te chnique kn o w n as High Volume Sampling was

employed. The Receiving Water Monitoring Study primarily e v al uates conventional water

quality parameters that are routinely measured in the field ( s uch as bio l ogical oxygen demand,

temperature, pH, and total suspen ded solids). Both stud ies used an upstream/downstream

study desig n, and the stations that were select ed and sampled during the 2006 sa mpling event

are shown i n Table 1 an d on Figure 1.

Page 2Potlatch F o rest Products Corp oratio n

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 06

Le w i st on, ID

Janu ar y 20 07



### 2.0 FIELD SA MPLING AND ANALYTI C AL MET H ODS

The field sampling me thods and l aboratory analytical methods used to colle ct and analyze

samples for the Weekly Receiving Water Monit oring Study and the Quarterly Surface Water and

Effluent Study are described in thi s section.

2.1 Field Sampling

Field sampli ng methods for col lecti n g river water and efflue nt samples are describe d below fo r

the Weekly Receiving Water Monitoring Study and the Quarterly Surface Water and Effluent

Study. For both weekly and quarterly samples, chai n o f custody f o rms, provided by the

analytical la bs, were co mpleted and accompani ed all sampl e s shipped t o the labs.

2.1.1 Weekly Rec e iving Water Monitorin g Stud y Sa mpling Methods

Water colu mn sampling was cond ucted at sa mple sites a t shallow an d mid-depth 1 

### each week

during the 2 006 monitoring period ( J uly 5 throu gh October 23). Field- measured water quality

data and water samples for water quality analyses were collected. F o r the rema inder of this

report, colle ction dates will indicate the first day of collect i o n for any given week (e .g., samples

collected on 7/5 or 7/6 will be ind icat ed as 7/5/06 ).

The parameters selecte d for the weekly monitor ing are grou ped as follo ws to facili ta te

discussion o f the colle cti on methods and results:

• Field-measured parame t ers: physical and ch e m ical properties measured in the field

using water quality mo nitoring inst r uments: velocity (ft/s), pH, dissolved oxygen (DO;

mg/L), and temperature (degrees Celsius);

• Conventional parameters: laborato r y measure d parameters that are ty pically monit ored

in water qua lity studies: total su spe nded solid s (TSS) and biochemical oxygen demand

(BOD);

• Nutrients: The nutrient parameters measured in this study included a mmonia nitrogen

(NH 3 

### -N), ni trate-nitrite nitrogen (NO 3 

### /NO 2 

### -N), total Kjeldahl nitrog en (TKN), total

phosphorus, and orthophosphate ph osphorus (Ortho-PO 4 

### ).

• 2,3,7,8-TCDF and 2,3,7, 8-TCDD

The sampli ng methods used in th e field c losely followed those described in A ppendix H,

Sampling and Analysis Plan for Receiving Wa ter M onitoring, of the Quality Assur ance Project

Plan (QAPP). Se veral deviations from the QAPP were noted: in some instances the wat e r

quality meter and/or the flow meter failed to op erate properly and parameters were no t reported.

These inst a nces are do cumented in the result s table as wel l as in the sampling log s (Appendix

I). Analytical Perspecti ves performed the diox i n analyses, while Columbia Analytical Services

1 

### Becau s e the depth of the Clea rwater Ri ver refe ren c e site is sh allo w, mea s urem ents were o b tained o n ly

at a shallo w d epth, and not at mid-de pth.

Page 3Potlatch F o rest Products Corp oratio n

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 06

Le w i st on, ID

Janu ar y 20 07



### (CAS) performed the remaining analyses. E ight weekly samples were either missing or

received broken by the analytical laboratory a nd therefore do not have results to report. The

samples were:

• 2,3,7,8-TCDD in weekly samples collected from

o LGP-01 on 7/5/06

o LGP-06 and LGP-13 on 7/11/06

o LGP-13 on 7/31/06

• 2,3,7,8-TCDF in weekly samples coll ected from

o LGP-01 on 7/5/06

o LGP-06 and LGP-13 on 7/11/06

o LGP-13 on 7/31/06

Because neither 2,3,7,8-TCDD nor 2,3,7,8-TCDF was detected in any weekly receiving water

sample at any location on any date, the uncertainly associat ed with these missing data points is

considered minimal.

2.1.2 Quarterly Surface Water and Effluent Stud y Sampling Methods

August 2005 represented the first round of quarterly sampling in the monitoring program, wi th

the Nove mb er 2005 round as the second. Sampling for the 2006 quarterly moni toring period

was condu cted in Ma rch (third r ound), Jun e (fourth ro und), September (fifth round), and

Nove mber (sixth round). As with t he 2005 dat a report, an alytical resu lts from the Novembe r

round of quarterly sampling were not available in time for report preparation. The 2006 report

therefore presents the r e sults of the second (No v 2005), third (March 2006), fourth ( J une 2006),

and fifth (Se p t 2006) rou nds. Nove mber 2006 sampling data will be presented in the January

2008 Data Report.

Field-measured water quality data a nd water sa mples for water quality analyses were collected

at each sa mple locati on on the Snake Rive r and Clearwater River at mid-depth. Effluent

samples were taken at the Faci lit y at the ae ration basin . All h igh- volume samples were

collected using a h igh v olume water sampler. Ot her samples were co ll ected using a standard

pump. All field person nel wore po wder free la tex gloves when handling sampling equipment

and samples.

Three types of samples were collected for quality control: trip blanks, field blanks, and fiel d

duplicates. A set of tr ip blanks (sample vials filled with ultrapure la b water) accompanied

sample bottl es to and fr om the field. O ne equipment blank was collecte d during each sampling

event, with one excepti on. During the Septe m ber 2006 sampling ro und, field bl ank sample s

were not submitted for analysis of dioxins and furans. All sampling equip ment was

decontaminated according to methods descr ibed in the QAPP and then rinsed with ultrapure lab

water. This rinsate was then sampled to produce the equipment blank.

The sampli ng methods used in th e field clo s ely followed those described in A ppendix A,

Sampling and Analysis Plan for Sur f ace Water and E ffluent Study, of the QAPP. A few minor

deviations relating to th e use of the high v olume sampler occurred during the 2006 sampling

Page 4Potlatch F o rest Products Corp oratio n

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 06

Le w i st on, ID

Janu ar y 20 07



### event as with the 2005 sampling e v ents, docu m ented in the January 2006 report. For high

volume samples, two samples were taken per day on some days, although the Q APP stated

only one sa mple would be taken p e r day. A standard p u mp was used to obta i n non-high

volume samples.

For the September 2006 high-volume sampling, sa mpling methods we re modified by using the

PUF material in the col u mn instead of the X A D. These mo dified methods will be applied to all

further high- volume sampling in thi s program.

The parameters selecte d for the qu arterly monitoring are:

• Resin Acids: Abietic, De hydroabietic, Isopimaric, Neoabietic, Palustric, Pi maric,

Sandaracopimaric, and Total 12/14 Chlorodehydroabietic a c id;

• Phytosterols: B-sitoster ol, Campesterol, Stigmastanol, Stig masterol, and Retene;

• Chlorophenolics: 2

, 4,6- Trichlorophe nol, 2,4,5-Tr ichlorophen ol, 2,3,4,6-T e trachlorphe nol,

3,4,6-Trichlo rocatechol, 3,4,5-Trichlo rocatechol, 3,4,6-Tricho roguaiacol, 3,4,5-

Trichlorogua iacol, Tri c hl orosyringol, 4,5,6-Trichlo roguaiacol, Pentachloro phenol,

Tetrachloro guaiacol, an d Tetrachlor ocatechol;

• Chloroform;

• Dioxins:

o 2,3,7,8-Tetrachlorodibenzodioxin (2,3,7,8-TCDD),

o 1,2,3,7,8-Pentachlorodibenzodioxin (1,2,3,7,8-PeCDD),

o 1,2,3,4,7,8- Hexachlorodibenzodioxi n (1,2,3,7,8-HxCDD),

o 1,2,3,6,7,8- Hexachlorodibenzodioxi n (1,2,3,6,7, 8 -HxCDD),

o 1,2,3,7,8,9- Hexachlorodibenzodioxi n (1,2,3,7,8, 9 -HxCDD),

o 1,2,3,4,6,7,8

- Heptachlorodibenzodio xin (1,2,3,4,6,7,8-HpCDD),

o Octachlorod ibenzodioxin (OCDD); an d

• Furans:

o 2,3,7,8-Tetrachlorodibe nzofuran (2, 3 ,7,8-TCDF),

o 1,2,3,7,8-Pentachlorodib enzofuran ( 1 ,2,3,7,8-PeCDF),

o 2,3,4,7,8-Pentachlorodib enzofuran ( 2 ,3,4,7,8-PeCDF),

o 1,2,3,4,7,8- Hexachlorodibenzofura n (1,2,3,4,7, 8 -HxCDF),

o 1,2,3,6,7,8- Hexachlorodibenzofura n (1,2,3,6,7, 8 -HxCDF),

o 1,2,3,7,8,9- Hexachlordibenzofuran (1,2,3,7,8,9-HxCDF),

o 2,3,4,6,7,8- Hexachlorodibenzofura n (2,3,4,6,7, 8 -HxCDF),

o 1,2,3,4,6,7,8

- Heptachlorodibenzofur an (1,2,3,4, 6 ,7,8-HpCDF),

o 1,2,3,4,7,8,9

- Heptachlorodibenzofur an (1,2,3,4, 7 ,8,9-HpCDF),

o Octachlorod ibenzofuran (OCD F ).

For Nove mber 2005, March 200 6 and June 2006, Columbia An alytical Services (CAS)

performed DOC, TOC, Chloroform and TSS analyse s. Axys Laboratori e s (Axys) performed the

remainder of analyses for these quarters. Beginning in Septe m ber 2006, Analytical

Perspectives began performing the dioxin a nalyse s, while CAS pe rformed the remainder.

Deviations from the QAPP occurred relating t o the analyte list durin g the Septe m ber 2006

monitoring period. Several analytes defined in the QAPP are not reported in the September

2006 results. Only two dioxin congeners (2,3,7 ,8-TCDD an d 2,3,7,8-TCDF) were analyzed for

Page 5Potlatch F o rest Products Corp oratio n

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 06

Le w i st on, ID

Janu ar y 20 07



### in this rou n d of quarterl y sampling. Individual congeners wi ll be analyzed for in the Novembe r

2006 and fu ture quarterl y sampling efforts. A di fferent analyte list was u s ed for resi n acids an d

phytosterols than outlined in the QAPP. This c hange in analyte list resulted in the reporting of

analytes not in the QAPP, and the exclusion of four resin acids ( S andaracopimaric Acid,

Palustric A c id, Neoabi etic Acid and Total 12/14-Chlorodehydroabietic Acid) and three

phytosterols (Campesterol, Stigmastanol, Stigmasterol).

Page 6Potlatch F o rest Products Corp oratio n

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 06

Le w i st on, ID

Janu ar y 20 07



### 3.0 DATA H A N D LING MET H OD S

Procedures for handling in the field a nd at the an alytical labor atory are described belo w.

3.1 Field Data

Data collect ed during fi eld activitie s were reco rded in fie l d notebooks and then e n tered into

database fo rmat. Because water q uality measurements were taken at several dep ths at one o r

more points at a sample location, al l measureme n ts are summarized as averages to provide an

overview of conditions present at a location. The me an water q uality data were then

summarized in two wa ys: by location and by s a mpling day. Summarie s consist of calculated

maxi mum, minimu m , mean, and median. Appendix 1 contains the fie ld data and su mmaries.

3.2 Analy t ical Data

Data received from the laboratories were enter ed into data base format through ele ctronic da t a

deliverables (EDDs). When field du plicates were c olle cted, the results of the two samples are

reported as the arithmetic mean co ncentration of the two results, u s in g one half t he detection

limit for non-detect result s.

Analytical d a ta colle cte d for the Weekly Re cei v ing Water Monitoring Study and the Quarterly

Surface Water and Effl uent Study have been summarized separately. For each Study, data

have been analyzed in two wa ys: by sa mple loc ation an d by sa mple day. The ma ximu m,

minimu m , median, and mean values are pr esented in summary tables for ea ch round o f

sampling. Non-detect results are reported as one half of the detect ion limit. Appendix 2

contains t h e data report ed from the analytical la boratories. Validation r eports are p r esented in

Appendix 3.

Page 7Potlatch F o rest Products Corp oratio n

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 06

Le w i st on, ID

Janu ar y 20 07



### 4.0 RESULT S

This sect ion reports the results of th e 2006 Weekly Receiving Water Mo nitoring Study and the

Nove mber 2 005, March 2006, June 2006 and September 2 006 rounds of the Quarterly Surface

Water and Effluent Study. Data are li sted in these tables in t he following order:

• Clearwater River refere nce locat ion (CR REF)

• Snake River reference lo cation (SR REF)

• Locations d o wnstream of the efflue nt from nearest to farthe st:

o LGP-13

o LGP-14

o LGP-11

o LGP-09

o LGP-06

o LGP-01

4.1 Weekly Rec e iving Water Monitorin g Stud y

For the weekly results, f i eld-measure par ameters are discu ssed in Sectio n 4.1.1 and

conventional parameters in Section 4

. 1.2.

4.1.1 Field-Measured Param e ters

The parame t ers measured in the field during the week ly sa mpling were water velocity, pH, DO,

and temperature. The se parameters were m easured at each locat io n during ea ch samplin g

period. Measurements were taken at several d epths at on e or more points alo ng a transect o f

the river ch annel at each sample site. Sample s collected f r om shallow water are d enoted with

an “S” in the sample identificati on, while those collected fro m mid-depth are denoted with an

“MD”. No mid-depth sa mple was collected at CR-REF. A mean daily value for each parameter

was calculat ed from all measureme n ts colle cte d on a sample day. This mean represents th e

conditions a t the sampl e location at the time of monitoring. Tables 2 th rough 5 and Figures 2

through 5 present the means for each sampling day for water velocity, pH, DO, and

temperature, respectivel y . Results o f the field pa rameters show similar conditions be tween CRREF and locations down s tream of the Facility.

4.1.1.1 Water Velocity

Table 2 an d Figure 2 show mean water velocity m easurements coll ected durin g the Weekl y

Receiving Water Monitoring Study. As with 20 05, mean water velocity at the Clea rwater River

reference location was typically greater and more vari able than velocity mea s ured at all

locations in the Snake River. Velocity in the Clearwater River decreases over the monitorin g

period and ranged from 0.32 ft/s (10/16/06) to 3.67 ft/s (8/ 8 /06). Velocity in the Snake River

remained fairly uniform throughout t he monitor ing period w i th locat ion averages between 0.01

ft/s and 0.25 ft/s.

Page 8Potlatch F o rest Products Corp oratio n

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 06

Le w i st on, ID

Janu ar y 20 07



### 4.1.1.2 pH

Table 3 and Figure 3 show mean pH measurement s collected during the Weekly Receiving

Water Monitoring Study. Mean pH fluctuated o v er the mon i toring perio d with the highest pH

measured in the Clearwater during the last weeks of July and the first week in August.

Downstream Snake River measurements ranged from 7.62 (LGP-06; 8/15/06) to 9.05 (LGP-01;

7/25/06). All pH measu r ements we re in the ra nge of the Idaho Department of En vironmental

Quality (IDEQ) water quality standar d range for pH of 6.5 to 9.5. Most measureme n ts were i n

the range of the Washin gton Department of Ecology (WDOE) water quality standar d range for

pH of 6.5 to 8.5. The pH measurements that were outside the WDOE standard range were

collected du ring late Jul y , early August and mid- September. During these periods, pH at CRREF was also measured near or a bove 8.5 as w ell, sugge sting that conditions ar e not li kely

Facility-relat ed.

4.1.1.3 Dissolved Ox y gen

Table 4 and Figure 4 show mean DO measu r ement s collected durin g the Weekly Receiving

Water Monitoring Study. Mean DO generally remained stable at all locat ion s over the

monitoring period. As with the 2 005 weekly sampling, t he highest DO concentrations wer e

typically observed at th e Clearwater River refe rence loca t io n (CR-REF), while the l o west DO

concentratio n s were ob served at th e Snake Ri ver referenc e locations (SR-REF) for all date s

before October, when t he lowest D O concentr a t ions were observed a t LGP-13 (only slightly

lower than other conce n trations). DO concentrations wer e most variable during the 7/31/06

monitoring period as DO decreased from the prev ious week at SR-REF, LGP-06 and LGP-0 1

. DO at LGP-13 (closest t o the Facil it y) increas ed from the previous week during this monitoring

period).

Average DO for the do wnstream locations exceeded the W D OE water quality standard for DO,

which is a minimu m of 8 mg/L DO. Individual DO measurements at a pproximatel y one half t h e

locations/da t es did not meet the standard, incl uding the Clearwater River reference location

. The average DO concentration measured for S R -REF is 7.5 mg/L. Thi s water qual ity standard

was used by EPA as the toxicity benchmark fo r DO in its Biological Ev aluation and as the basis

for the computation of t he effluent l i mitations fo r Biochemical Oxygen Demand (BOD) in the

permit. The finding that the average downstream DO meas urements were at least 8 mg/L, and

were therefore complia nt with the WDOE water quality standard, ind icates that the Facil ity

discharge i s not affectin g DO downs tream of the Facility.

4.1.1.4 Water Temperature

Mean water temperatures general ly decreased at all locat io ns over the monitoring period, with

an increase at nearly all locations du ring the 8/ 8/06 monitoring period (Table 5; Figure 5). The

highest temperatures were generall y observed at SR-REF while the lowest temperatures were

always observed at CR-REF (an a v erage of appr oximately 9 degrees colder than the SR-REF

average). At the down s tream Sna k e River loc ations, water temperatu r es tended to increase

moving from upstream to downstream, such that the lowest average Sn ake River temperatures

were measured close s t t o the Faci lit y (LGP-13), and the hig hest temperatures were measured

Page 9Potlatch F o rest Products Corp oratio n

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 06

Le w i st on, ID

Janu ar y 20 07



### farthest fro m the Faci lity (approaching the Lower Gra nite Dam; LGP-01). During July,

temperature measurements at f i ve locations/da t es (mostly at LGP-01) exceed the temperature

benchmark for July and August of 20 degrees C used in EPA’s Bi ological Evaluation wit h

temperature readings between 20.4 (LGP-11) a nd 22.35 (L GP-01). Du ring this time, the SRREF te mperature was a l so above 2 0 degrees. In fact, the temperatures at the Snake River

reference lo cation exce eded the Jul y /August benchmark on all sampling dates.

For August, the temperature bench m ark of 20 degrees C was exceeded at six downstream

locations/da t es during the weeks of 8/8/06 an d 8/15/06 with temperature readings between

20.4 (LGP-0 1) and 21.1 2 (LGP-13) degrees C. SR-REF te mperatures were above 20 degrees

C during thi s time as well.

EPA’s Biological Evaluation used a t e mperature benchmark of 18 degrees C for September and

October. Most temperatures for all but LGP

- 13 exceed the Septe m ber/Octob er benchmark.

The temperature measured at LGP-13 (close s t to the Fa cilit y) did not ex ceed the be nchmark of

18 degrees C on any Se ptember/October sampling date.

4.1.2 Conventional Parameters

Conventional parameters analyzed during this study were TSS and BOD. For those samples

with nondetectable con c entrations, the concentration was calculated by using one half the

detection li mit. If an a nalyte was not detectab le across al l sites on a given sample day, it wa s

considered not present.

4.1.2.1 Total Suspended Solids

Table 6 presents the Total suspend ed solids (T SS) concentrations for each sampling day of the

monitoring period. TSS concentratio n s were ND in all but 27 out of 221 samples. As with 2005,

the detectio n limit for T SS was 5 mg/L. Detect ed concentr a tions range d from 5 mg /L to 8 mg/L

with the ma ximu m concentration occurring at LGP-01-MD collected on 8/21/06. Among th e

upstream samples, TSS concentra tions range d from ND to 25 mg/L (SR-REF-MD). Among

downstream samples, T SS concentrations r ange d from ND to 10 mg/L (LGP-01-MD).

EPA’s Biological Evaluation used a toxicity benchmar k of 10 mg/L for TSS. No exceedances

occur i n any downstrea m results, a l t hough a fe w upstream results exceed the ben chmark of 10

mg/L. Average concent rations by date or by location were well below the toxicity benchmark.

4.1.2.2 Biochemical Ox y gen Demand

Table 7 and Figures 6a (shallow surface water) and 6b (mi d -depth surface water) present the

BOD concentrations for each sampling day of the monitoring period. BOD co ncentrations

ranged from ND to 137 mg/L. The maxi mum concentration was measu r ed in a sample collect e d

at station L G P-09-S on 7/5/06. Thi s result i s a n average of the initia l sample result and its fie ld

duplicate. I n this in sta n ce both re sults were of similar magnitude an d the average therefore

represents b o th result s a ppropriately. As with ma ny other BOD results, t h e analytical l aboratory

qualified the s e results a s the analyses exceeding the stand ard holding times. LGP-09-MD was

Page 1 0Potlatch F o rest Products Corp oratio n

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 06

Le w i st on, ID

Janu ar y 20 07



### also elevated during the 7/5/06 period compared to previous years and other downstream

locations (7 4 mg/L). In fact, BOD re sults from 7/5/06 at all locations (incl uding SR-REF and CRREF) were the highest o f the entire monitoring period. The samples coll ected on thi s date from

several locations were qualified by the laboratory as havi ng exceeded holding ti mes. BOD

concentratio n s in the qualified sa mples exceeded concentrations i n unqualifie d samples

collected on this date. Because up stream BOD concentrati ons were also elevated, it is unli kely

that the Faci lity contribut ed to BOD c onditions do wnstream.

With the exception of the 7/5/06 measurements, all BOD concentrations were below 2 mg/L at

all locat ions.

4.1.2.3 Nutrients

During weekly monitoring, sample s were ana lyzed for several nitro gen- and p hosphoruscontaining nutrients. The nitrogen-containing nutrients were ammo nia nitrogen , nitrate and

nitrite nitrog en, and total Kjeldahl nitrogen. The phospho rus-containi ng nutrients were total

phosphorus and orthophosphate. For those samples with a nondetectable conce n tration, the

concentratio n was calculated by u s ing one half the detection limit. If an anal yte was not

detectable a c ross al l site s on a given sample day, it was thus not consider ed present.

4.1.2.4 Ammonia Nitrogen

Table 8 and Figures 7a (shallow surface water) and 7b (mid-depth surface water) present

ammonia ni trogen concentrations f o r each sam pling day of the monitoring period. Ammonia

nitrogen co ncentrations during the monitoring per iod ranged from ND to 0.11 mg/L. The

maxi mum c oncentration was measured in a sa mple collect ed at statio n SR-REF-S on 7/18/06.

Among the downstream samples, a mmonia nitrogen conce n trations ra nged from ND to 0.05

mg/L (LGP-01-S; 10/23/06 and LGP-01-MD; 9/0 5 /06). In bo th shallow a nd mid-depth samples,

concentratio n s were typi cally below 0.03 mg/L. During each week, the location of th e maxi mu m

concentratio n was often detected at LGP-01-S (the farth e st location from the Facility). In

shallow samples, the lo cation of maximum concentration varied over the monitoring period.

4.1.2.5 Nitrate/Nitrite Nitrogen

Table 9 and Figures 8a (shallow surface water) and 8b (mid-depth surface water) present

nitrate/nitrite nitrogen concentratio n s for each sampling day of the monitoring period.

Concentrati ons of nitrate/nitrite nitro gen ranged from 0.019 J (LGP-01-S; 7/25/06) to 0.61 mg/L

(SR-REF-MD; 10/9/06) and generally increased during the 17 week monitoring period. T h e

maxi mum downstream concentra tion is 0

. 6 mg/L (LGP-13-S; 10/16/06). Maxi mu m

concentratio n s in both shallow and mid-depth sa mples were generally observed in the Snake

River refere nce location . The concentration pr ofile observed in the Snake River samples is

similar to 2005 and suggests either a strong seasonal influ ence or the existence of a non-point

source contr ibution of nit rate/nitrite ni trogen along the length o f the River.

Page 1 1Potlatch F o rest Products Corp oratio n

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 06

Le w i st on, ID

Janu ar y 20 07



### 4.1.2.6 Total Kjeldahl Nitrogen

Table 10 and Figures 9a (shallow surface water) and 9b (mi d -depth surface water) present the

total Kjelda hl nitrogen (TKN) concentrations f o r each sa mpling day of the monit oring period

. TKN concentrations ran ged from ND to 1.6 mg /L. The ma ximu m concentration was measured

in a sample colle cted at station LGP-11-MD on 7/25/06. Among the upstream sa mples, TKN

concentratio n s ranged from ND to 0.8 mg/L. Co ncentrations of TKN in s hallow water were more

variable tha n the 2005 weekly results, with LGP-13 as the most consi s tent lo catio n of either

upstream or downstream results. Mid-depth conc entration s were slightly more constant over

time than those of the shallow water samples. Concentrati ons at locati on LGP-01 (the farthest

downstream sample location) are sl ightly higher than con c e n trations at locations cl oser to the

Facility.

4.1.2.7 Total Phosphorus

Table 11 an d Figures 1 0a (shallow surface wat e r) and 10b (mid-depth surface wat e r) present

the total ph osphorus co ncentrations for each sampling day of the monitoring perio d. Result s

were fairly consistent wit h the 2005 weekly sampling. Total phosphorus concentrat i ons ranged

from 0.004J (CR-REF-S) to 0.16 mg/L (LGP-0 9-S; 7/11/06). Only o ne nondetect result wa s

reported from either u p stream or downstream samples (CR-REF-S). Amo ng upstream

samples, tot al phosphor us ranged fr om ND to 0.10 mg/L. Among downstream samples, total

phosphorus ranged from 0.02 mg/L to 0.16 mg/L. Maximu m concentratio n s in both shallow and

mid-depth samples were observed in different locations fr om week to week. Sh allow depth

concentratio n s remained fairly con s tant at the Clearwater River reference loca t i on and are

generally lower than all other locati ons (17 w eek average of 0.009 mg/L). At both depths,

concentratio n s in the S nake River tended to in crease over the duratio n of the stu d y through

September, then decr eased in October. As with nit rate/nitrite, the concent ration profil e

observed in the Snake River samples sugge sts either seasonal flu c tuation pat terns or the

existence of a non-point source contr ibution of ph osphorus al ong the leng th of the River.

4.1.2.8 Orthophos phate Phosphorus

Table 12 an d Figures 1 1a (shallow surface wat e r) and 11b (mid-depth surface wat e r) present

the orthophosphate pho sphorus con c entrations f o r each sampling day of the monitoring period.

Results are similar to, if not sligh tl y less variable over the monitoring period th an in 2005

. Orthophosphate phosp horus con c e n trations ra nged from 0.003J to 0

. 0 9 mg/L. Nondetectable

concentratio n s were ob served 11 ti mes, all at the Clearwa ter River reference loca t ion. The

maxi mum c oncentration was measu r ed in a sample col lecte d at sta t ion LGP-09-MD on 10/9/05.

This is the same week as the 2005 maxi mum c oncentration sampling date. Among upstream

samples, orthophosphat e concentrat ions ranged from 0.003J to 0.07 mg/L . Among do wnstream

samples, or thophosphat e concentra tions range d from 0.0 1 mg/L to 0.09 mg/L. Maximu m

concentratio n s in shall o w samples were observed in differe nt locations from week to week. In

mid-depth samples, ma ximu m concentrations were often observed at th e Snake River reference

location. Concentration s remained constant at t he Clearwater River refe rence locati on. At both

depths, con c entrations i n the Snake River ten ded to incre ase over the duration of the study

through September, then decreased in Octob e r. As with the 2005 r e sults, the concentratio n

Page 1 2Potlatch F o rest Products Corp oratio n

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 06

Le w i st on, ID

Janu ar y 20 07



### profile obse r ved in the Snake River samples su ggests eithe r a seasona l fluctuat ion pattern or

the existence of a non-p oint source cont ribution of orthophosphate phosphorus along the length

of the River.

4.1.2.9 2,3,7,8-TCDD

Table 13 presents the 2,3,7,8-TCDD concentrations for each sampling day of the monitoring

period. Be cause several samples were eithe r received broken or r e corded as not bein g

received by the lab, they could not be analyzed. These samples are not ed in Table 13 with an

“*”. As with 2005, 2,3,7, 8-TCDD was not detec t ed in any sample on any date during the study.

As such, the results wer e not plotted on a figure.

4.1.2.10 2,3,7,8-TCDF

Table 14 presents the 2,3,7,8-TCDF concentra tions for ea ch sampling day of the monitoring

period. As with 2,3,7,8- TCDF, several samples were either received bro k en or re cor ded as not

being received by the lab, and coul d not be analyzed. 2,3, 7,8- TCDD was also not detected in

any sample on any date during the st udy. As such, the result s were not plotted on a fi gure.

4.2 Quarterly Surface Water and Effluent Monitoring Stud y

Quarterly re sults are su mmarized b y chemical group, then by quarter in chronolo gical order

(Nove m ber 2005, March 2006, Ju ne 2006 a nd September 2006). Tabulated results ar e

presented separately for each quarte r (Tables 15

- 26). Figur es depict re ceiving water results of

each quarter in four separate graphs within one figure; while the effluent results are depicted i n

a separate set of figures (Figures 12 – 23). Parameters with nondetectab le concentra tions were

represented by one half the detect i on limit. If an analyte was not det ectable acro ss al l site s, it

was conside red not present and thus not evaluated further.

4.2.1 Resin Acids

Tables 15 t h rough 18 p r esent the t abulated results of the r e sin acids a nd Figures 12 (receivin g

water sampl e s) and 13 (effluent sa mples) graphically present the resin acid concentrations f o r

each river location and e ffluent for ea ch of the fou r quarters summarized in this report.

Nove mber 2 005

Seven of ni ne resin aci d s were nondetect in any receiving water sampl e s (Table 15). All resin

acids were nondetect at both reference locatio ns. There are more n ondetect resin acids in

Nove mber 2005 than in August 2005. Neoa bietic acid was detected at two re ceiving water

locations (L GP-11, 0.00 4J ug/L; L G P-9, 0. 001 J). The average downstream concentration for

neoabietic acid is 0. 0011 ug/L. The other resin acid detected is t o tal 12/14-

Chlorodehydroabietic A c id, detecte d once (LGP-11; 0.003J). All resin acid concen trations in th e

receiving water are well below the toxicity benchmark of 2.2 ug/L used in EPA’s Monitoring

Plan, attach ed to NOAA Fisheries’ Biological O pinion. Wit h most results nondetect and below

Page 1 3Potlatch F o rest Products Corp oratio n

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 06

Le w i st on, ID

Janu ar y 20 07



### the benchmarks, there does not appear to be a significa n t concentrati on trend with increasing

distance fro m the Facilit y. For most of the resin acids, there is a sli ght in crease in co ncentration

(still well bel ow the toxicity benchmark) at LGP-11 (Figure 12 ).

Table 15 a l so presents t he concentr a tions in the effluent a s both dissolved and total

. Three o f

the nine resin acids wer e nondetect in the dissolv ed effluent. In comparing the di ssolved an d

solid fractio n s, the majority of resin acids are associated wit h the solid fraction of effl uent (Table

15; Figure 1 3 ).

March 2006

As with November 2005, seven of nine resin a c ids were n o t detected in any recei v ing water

samples (Table 16). T w o resin acids were detected in the receiving water: abietic acid (one

location; LG P-09) and neoabietic a c id (four loca t ions). Ho wever, these two acids were also

detected in the Clearwater River reference sample. Abietic acid was not detected at the

location nea rest the d i ff user (LGP-13/14). All resin acid co ncentrations in the recei v ing water

are well below the toxic i ty benchma r k of 2.2 ug/L used in EPA’s Monit oring Plan, attached to

NOAA Fisheries’ Biolog ical Opinion . With most results non detect and below the benchmarks,

there does not appear to be a con c entration tr end with in creasing d i stance from the Facil ity

(Figure 12).

Table 16 a l s o present s the con c en trations in t o tal effluent . A di ssolv ed sample could not be

analyzed because no effluent sa mple was collected for disso lved analysis. I n this case, a

dissolved fr action co ncentration is not obtai nable. A maximu m possib le solid fra c tio n

concentratio n ma y be obtained by analyzin g the total effluent sample, me asuring the

concentratio n of total suspended solids in the sample, and assuming that the entire mass of

analyte in the sample is present adsorbed to the suspended solids, u s ing the followin g formula:



## mg/g 1000 C C C

TSS toteff

solid 

## × =

where:

C solid 

### = Concentrati on in the sol id fraction of effluent (ug/ g)

C

tote ff 

### = Concentrati on in total ef fluent (ug/L)

Palustric a c i d and 12,14 -Dichlorode hydroabietic Acids were not detect e d in tota l effl uent (Table

16; Figure 1 3 ).

June 2006

Three of nine resin acids were not detected in any receivin g water sa mples (Table 17). Abietic

acid, neoabi etic acid, isopimaric acid and palustric acid were detected in 5 of 5 rec eiving water

samples. Three of these resin aci d s were detected in the upstream reference sa mples. All

Page 1 4Potlatch F o rest Products Corp oratio n

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 06

Le w i st on, ID

Janu ar y 20 07



### resin acid concentration s in the receiving water are well be low the toxicity benchmark of 2.2

ug/L used in EPA’s Monitoring Plan, attached to NOAA Fisheries’ Biological Opinion.

Table 17 also presents t he concentr a tions in the effluent as both dissolv ed and total. In both th e

dissolved a nd soli d effl uent sampl e s, palu stric acid and 12,14-Dichl o rodehydroabietic Acid s

were not detected (Table 17; Figure 13).

September 2006

Although none of the resin acid s was detected in any receiving water sample during the

September 2006 sampling round (Table 18, Figure 13), detection limits for all analytes were

substantia lly elevated (1 0 – 20 ug/L) , relative to previous sa mpling rounds (generall y less than

0.01 ug/L). Concentrations of resin acids d e tected in previous quarterly sampling rounds

(described i n the preceding paragraphs) were considerab ly lower th an the detection limits

achieved during the S eptember 2006 sampli ng round. Additionally, the list of resin acid s

reported for the Septe m ber 2006 round differed from the list of resin acids analyzed during

previous rounds. Duri ng previous quarterly sampling rounds, sandar acopimaric acid, palu str i c

acid, and ne oabietic a c i d were analyzed, but were not anal yzed in the September 2006 rounds.

In the Septe m ber 2006 round, linol ei c acid and o leic/l inoleni c acid were a nalyzed, but were not

analyzed during previous rounds.

Tables 18 a nd Figure 1 3 also pre s ent the con c entrations i n the efflue nt samples. Two total

effluent samples were collected (09/ 18/06 and 0 9 /20/06) for the purposes of obtain ing both a

solid fract i o n and a dissolved fracti on concentr a tion of resi n acids in e ffluent. The dissolved

fraction con c entration may be obtained by filterin g the effluen t sample and analyzing the filtrate.

The solid fra c tion may b e obtained by subtracting the dissolved (filtered) sample results from the

total (unfil ter ed) sample results. However, because of a sa mple handli ng error, nei ther effluent

sample was filtered, and both were analyzed as t o tal effluent.

A ma xi mum possible so lid fraction concentration was estima ted for both total effluent samples

collected du ring the Se ptember 2006 rounds. Only linoleic acid and o leic/l inoleni c acid were

detected in the effluent samples. T hese compounds had not been a nalyzed for in previous

quarterly sampling rounds becau se there were not in clude d in the list of resin acids to be

analyzed in the QAPP. Estimated maxi mum poss ible solid fraction concentrations of these

analytes agreed closely between th e two effluent samples, with linolei c acid estimated at 9.5

ug/g and 7.8 ug/g and ol eic/lino lenic acid estimat ed at 25 ug/ g and 23 ug/ g.

4.2.2 Ph y t oste r ols

Tables 15 t h rough 18 and Figures 14 (river samples) an d 15 (effl ue nt samples) present th e

phytosterol concentratio n s for each r i ver location and effluent

.

Nove mber 2 005

As shown in Table 15 and Figure 14, retene was not detected in r i ver samples, but was

detected in effluent sa mples (Figu re 15). Sti g mastanol was not det ected in up stream river

Page 1 5Potlatch F o rest Products Corp oratio n

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 06

Le w i st on, ID

Janu ar y 20 07



### samples, b u t was det ected in d o wnstream river samples and i n effluent. B-sitostero l

, campesterol, and stigmasterol were detected in upstream river, downstream river, a nd effluent

samples. A ll phytostero l concentrat i ons detecte d in river sa mples were lower than t he toxicity

benchmark of 2.5 ug/L used in EPA’s Monitoring Plan, att a ched to NOAA Fisheries’ Biological

Opinion.

March 2006

As shown i n Table 16 and Figure 14, retene was not det ected in up stream river samples, b u t

was detected in four of five downs tream river samples (not detected at location LGP-13/14,

immediately downstream of the diffuser) and in effluent samples (Figure 15). Stig mastanol, bsitosterol, campesterol, and stigmasterol were detected in upstream river, downstream river,

and effluent samples. All phytoster ol concen tra t ions dete c t ed in river samples were lower than

the toxicity benchmark of 2.5 ug/L used in EPA’s Monitoring Plan, attached to NOAA Fisheries’

Biological Opinion. A dissolved phase efflue nt sample could not be analyzed because no

effluent sam ple was coll ected for di ssolved ana lysis. In thi s case, a maximu m possible solid

fraction con c entration w a s calcu late d using the method described above for resin a c ids.

June 2006

As shown in Table 17 a nd Figure 1 4 , retene wa s detected i n the Snake River upstr eam sample

and was not detected in the Clearwater River u p stream sample. Rete ne was also detected in

two of five downstream river samples (at the two farthest downstream locations), and was

detected in effluent samples (Figure 15). B-sitosterol and sti g mastanol were not detected in any

upstream or downstream river sa mple, but were detected in efflu ent. Campesterol an d

stigmasterol were dete c ted in upstream river, downstrea m river, and effluent samples. Al l

phytosterol concentratio n s detected in river samples were lower than the toxicity be nchmark of

2.5 ug/L used in EPA’s Monitoring Plan, atta ched to NOAA Fisheries’ Biological Opinion.

September 2006

During this sampling ro und, only r e tene and b-sitosterol were analyzed in r i ver and effluent

samples. As shown in Table 18 and Figure 14, retene was detected in the Clearwater Rive r

upstream samples and was not detected in the S nake River upstream sample. Retene was not

detected in downstream river sampl e s, and was not detected in effluent samples (Figure 15). Bsitosterol was detected i n upstream river samples, downstre a m river sample, and in effluent. Al l

b-sitosterol concentratio n s detected in river samples were lower than th e toxicity be nchmark of

2.5 ug/L used in EPA’s Monitoring Plan, atta ched to NOAA Fisheries’ Biological Opinion.

A dissolved phase effluent sample could not be analyze d because no effluent sample was

collected for dissolved analysis. In this case, a maxi mum p o ssible solid fraction co ncentratio n

was calculat ed using the method described above for resin a c ids.

Page 1 6Potlatch F o rest Products Corp oratio n

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 06

Le w i st on, ID

Janu ar y 20 07



### 4.2.3 Chlorophe nolics

Tables 19 t h rough 22 and Figures 16 (river samples) an d 17 (effl ue nt samples) present th e

phytosterol concentratio n s for each r i ver location and effluent

.

Nove mber 2 005

Only two chlorophenoli c compoun ds were de te cted durin g this sampling round (Table 19)

. 3,4,6-Trichlo rocatechol was detect ed at the Clearwater River reference location, and

tetrachlorocatechol was detected at l o cation LGP-14.

Table 19 and Figure 17 also show chloropheno lic concentr a tions in effl uent samples. During

this round, three chlo rophenolics were detected in the dissolved effluent fra c tion (2,4,6

- trichlorophe nol, 3,4,5-tri c hloroguaia col, and 4,5

, 6-trichlorog uaiacol). T w o chloroph enolics were

detected in the sol i d effluent fr action (2,4, 6 -trichloroph enol and 3,4,5-trichlor oguaiacol)

. Concentrati ons in the di ssolved and solid eff lue nt fractions are similar.

March 2006

No chlorophenolic compounds were detected in upstream o r downstream river samples during

this samplin g round (Table 20).

Table 20 and Figure 17 also show chloropheno lic concentr a tions in effl uent samples. During

this round, a sample of t o tal effluent was analyze d for ch loro phenolics, b u t no di ssol v ed fraction

analysis wa s conducted because a filtered sa m ple was not colle cted. Three ch l o rophenolics

were detected in the t o tal effluent fraction (2, 4 ,6-trichloro phenol, 3,4, 5-trichlorogu aiacol, an d

3,4,6-trichlor oguaiacol). A maxi mum possib le so lid fract ion concentration was cal c ula ted using

the approach described above for resin acid s.

June 2006

No chlorophenolic compounds were detected in upstream o r downstream river samples during

this samplin g round (Table 21).

Table 21 and Figure 17 also show chloropheno lic concentr a tions in effl uent samples. During

this round, a sample o f total effluent and a sample of filtered efflu ent were a nalyzed for

chloropheno lics. Two chloropheno lics were de tect ed in the filtered (dissolved) effluent fraction

(2,4,6-trichlo rophenol a nd 4,5,6-tri c hloroguaia col). In the total effluent sa mple, two

chloropheno lics were detected ( 2 ,4,6-trichlor ophenol an d 3,4,5-trichloroguaiacol). The

concentratio n s in the di ssolved fracti on are simil a r to concen trations in th e total efflue nt sample.

September 2006

Only one chlorophenolic compound was detecte d dur ing thi s sampling ro und (Table 22) ( 2,4,6-

trichlorophe nol at locat i on LGP-6).

Page 1 7Potlatch F o rest Products Corp oratio n

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 06

Le w i st on, ID

Janu ar y 20 07



### Table 22 and Figure 17 also show chloropheno lic concentr a tions in effl uent samples. During

this round, two samples of total effluent we re a nalyzed for chloropheno lics, but no dissolved

fraction anal ysis was co nducted because neither of the total effluent samples was filt ered. Five

chloropheno ls were detected in t he total ef fluent samples (2,4,6- t richlorophe nol, 3,4,6-

trichlorocate c hol, 3,4,5-t r ichloroguai acol, 3,4,6-t r ichloroguai acol, and 4, 5,6-trichloro guaiacol). A

maxi mum p o ssible soli d fraction concentration was calcul ated using t he approach described

above for resin acid s.

4.2.4 Chloroform

Tables 15 t h rough 18 a nd Figure 1 8 present th e chlorofor m concentrations for e a ch river and

effluent sample locatio n.

Nove mber 2 005

Chloroform was not detected at any upstream downstream river sample location (Ta ble 15).

Table 15 and Figure 18 also show chloroform concentrations in total efflu ent. During this round,

chloroform was detected at a concentration of 1.4 ug/L in the total effluent sample, which is less

than the toxicity benchmark for chlor oform of 12.4 ug/L used in EPA’s Biological Evaluation.

March 2006

Chloroform was not detected in up stream or downstream river sampl e s during th is sampling

round (Tabl e 16).

Table 16 and Figure 18 also show chloroform concentrations in total efflu ent. During this round,

chloroform was detecte d at a concentration of 1 ug/L in th e total efflu ent sample, which is le ss

than the toxicity benchmark for chlor oform of 12.4 ug/L used in EPA’s Biological Evaluation.

June 2006

Chloroform was not detected in up stream or downstream river sampl e s during th is sampling

round (Tabl e 17).

Table 17 and Figure 18 also show chloroform concentrations in total efflu ent. During this round,

chloroform was detected at a concentration of 1.3 ug/L in the total effluent sample, which is less

than the toxicity benchmark for chlor oform of 12.4 ug/L used in EPA’s Biological Evaluation.

September 2006

Chloroform was not detected in up stream or downstream river sampl e s during th is sampling

round (Tabl e 18).

Page 1 8Potlatch F o rest Products Corp oratio n

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 06

Le w i st on, ID

Janu ar y 20 07



### Table 18 and Figure 18 also show chloroform concentrations in total efflu ent. During this round,

chloroform was detected at a concentration of 1.1 ug/L in the total effluent sample, which is less

than the toxicity benchmark for chlor oform of 12.4 ug/L used in EPA’s Biological Evaluation.

4.2.5 Dissolved and Total Organic Carbon

Tables 15 t h rough 18 and Figure 19 present t he Dissolve d Organic Carbon (DOC) and Tota l

Organic Carbon (TOC) concentration s for each ri ver and effluent samplin g location.

Concentrati ons of DOC and TOC were generally consist ent in river water samples. DOC

concentratio n s ranged fr om 1.8 mg/L at CR REF in Septe m ber 2006 to 3.05 mg/L at LGP-01

(the farthest downstream location) in March 2006. Concentrations o f TOC rang ed from 1.8

mg/L at CR-REF in September 2006 to 3.1 mg/L at LGP-11 and LGP-09 in March 2006.

In the eff lue nt, DOC ranged from 90.0 mg/L to 124 mg/L, a nd TOC ranged from 125 mg/L to

141 mg/L.

4.2.6 Dioxin Congeners

Tables 23 t h rough 26 a nd Figures 20 (river water samples) and 21 (ef f luent sampl e s) present

the dioxin congener con c entrations f o r each loca t ion and the effluent.

Nove mber 2 005

As shown in Table 23, 2,3,7,8-TCDD was not detec ted in any upstream or down s tream river

sampling location. 1,2, 3,7,8-PeCDD was not detected at upstream river locations, and was

detected in one of six downstream location (LG P -14). The remaining 2,3,7,8-substit u ted dioxin

congeners were detected in at le ast one up stream sample and at least one d o wnstream

sample.

Table 23 and Figure 21 show concentrations of dioxin congeners in effluent. 2,3,7,8-TCDD wa s

not detecte d in the dissolved fracti on of efflue nt, and was detected in the solid fraction of

effluent at a concentrati on of 0.005 pg/L, which is less than the toxicity benchmark for 2,3,7,8-

TCDD of 0.06 pg/L used in EPA’s Biological Evaluation. Higher-chlor inated dioxin congener s

(that is, t hose congeners that are not associated with pulp an d paper manufacturing processes)

were detected in both the dissolve d and solid fractions o f effluent. The majority of dioxin

congeners d e tected in ef fluent were observed in the solid fra c tion.

March 2006

As shown in Table 24, 2,3,7,8-TCDD was not detec ted in any upstream or down s tream river

sampling location. 1,2, 3,7,8-PeCDD was not detected at upstream river locations, and was

detected at two of five downstream location s ( L GP-11 and LGP-09). The remaining 2,3,7,8-

substituted dioxin congeners were detected in at least one upstream sample and at least one

downstream sample.

Page 1 9Potlatch F o rest Products Corp oratio n

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 06

Le w i st on, ID

Janu ar y 20 07



### Table 24 and Figure 21 show concentrations of dioxin congeners in effluent. 2,3,7,8-TCDD wa s

not detecte d in the dissolved fracti on of efflue nt, and was detected in the solid fraction of

effluent at a concentrati on of 0.007 pg/L, which is less than the toxicity benchmark for 2,3,7,8-

TCDD of 0. 06 pg/L used in EPA’s Biological E v aluation. Some of the higher-chlorinated dioxin

congeners ( t hat is, tho s e congeners that are not associated with pulp an d paper manufacturing

processes) were detected in both the dissolve d and solid fractions of effluent. The majority o f

dioxin cong eners detect ed in effluen t were observed in the solid fractio n

.

June 2006

As shown in Table 25, 2,3,7,8-TCDD was not detec ted in any upstream or down s tream river

sampling location. The r e maining 2,3,7,8-substit u ted dioxin congeners were detected in at least

one upstrea m sample a nd at least o ne downstream sample.

Table 25 and Figure 21 show concentrations of dioxin congeners in effluent. 2,3,7,8-TCDD wa s

detected in the dissolved fraction of effluent at a concentra tion of 0.005 pg/L and in the solid

fraction of e ffluent at a concentratio n of 0.024 pg/L, both of which are less than the toxicity

benchmark for 2,3,7,8-TCDD of 0. 06 pg/L used in EPA’s Biological E v aluation. Some of th e

higher-chlori nated dioxin congeners (that is, tho s e congener s that are n o t associate d with pulp

and paper manufacturing processe s) were detected in bot h the disso l v ed and soli d fractions o f

effluent. T he majority of dioxin congeners d e te cted in effluent were observed in the sol i d

fraction.

September 2006

As shown in Table 26, only 2,3, 7,8-TCDD and 2,3,7,8-TCDF were analyzed during the

September 2006 round. 2,3,7,8-TC DD was not detected in any upstre a m or downstream rive r

sampling location.

Table 26 and Figure 21 show concentrations of dioxin in effluent. 2,3,7,8-TCDD was n o t

detected in either the di ssolved or solid fractio n of effluent.

4.2.7 Furan Con geners

Tables 23 t h rough 26 a nd Figures 22 (river water samples) and 23 (ef f luent sampl e s) present

the furan co ngener concentrations fo r each locat i on and the e ffluent.

Nove mber 2 005

As shown in Table 23, 2

, 3,7,8-TCDF was detect ed at the Sn ake River upstream river sampling

locations an d three of six (L GP-13, LGP-11, an d LGP-01) d o wnstream river sampling locations.

All concentr a tions are l e ss than th e toxicity benchmark for 2,3,7,8-TCDFof 0.2 pg/L used i n

EPA’s Monitoring Plan as appended to NOAA Fi sheries ’ Biological Opinion. 1,2,3,7, 8,9-HxC D F

was not de tected at a n y upstream or down s tream river location. Three furan congener s

(1,2,4,7,8-PeCDF, 1,2,3,7,8,9-HxCDF, and 2,3,4

, 6,7,8-HxCDF) were not detected in upstream

samples, but were detected in at least one downstream sample. The remaining 2,3,7,8-

Page 2 0Potlatch F o rest Products Corp oratio n

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 06

Le w i st on, ID

Janu ar y 20 07



### substituted f u ran congeners were d e tected in at least one upstream sample and at least one

downstream sample.

Table 23 an d Figure 23 show conce n trations of dioxin in effl uent. 2,3,7, 8-TCDF wa s detected i n the dissolved fraction of effluent (0.024 pg/L) in the solid fraction of efflu ent (0.067 pg/L). Both

concentratio n s are less t han the toxicity benchmark for 2,3,7

, 8-TCDF of 0.2 pg/L use d in EPA’s

Monitoring Plan as appended to NOAA Fisheri e s’ Biological Opinion. Some highe r-chlorinated

furan cong eners (that is, those congeners that are not associat e d with pulp and paper

manufacturing processes) were de tected in both the dissolved and so lid fractions of effluent.

The majority of furan con geners dete c ted in efflu ent were observed in the solid fra c ti on.

March 2006

As shown in Table 24, 2

, 3,7,8-TCDF was detect ed at the Sn ake River upstream river sampling

locations a nd four of five (LGP-13/14, LGP-09, LGP-0 6 , and LGP-01) down s tream rive r

sampling lo cations. All concentratio n s are less t han the toxi city benchmark for 2,3, 7

, 8-TCDF of

0.2 pg/L used in EPA’s Monitoring Plan as appended to NOAA Fisheri e s’ Biological Opinion.

1,2,3,7,8,9- HxCDF was not detecte d at any upstr eam or downstream river location . Four furan

congeners (1,2,4,7,8-PeCDF, 1,2,3,7,8,9-HxCD F, 2,3,4,6,7,8-HxCDF, and 1,2, 3,4,7,87,9-

HpCDF) we re not detected in upstream samples , but were d e tected in at least one downstream

sample. The remaining 2,3,7,8-su bstituted fur an congene rs were detected in at least one

upstream sample and at least one do wnstream sample.

Table 24 an d Figure 23 show conce n trations of dioxin in effl uent. 2,3,7, 8-TCDF wa s detected i n

the dissolve d fraction of effluent at a concentra tion of 0.02 4 pg/L, and in the solid fraction of

effluent at a concentrati on of 0.056 pg/L, both of which are less than the toxicity benchmark for

2,3,7,8-TCDF of 0.2 pg/L used in EPA’s M oni toring Plan as appended to NOAA Fisheries’

Biological O pinion. Some higher-chlorinated fu ran congeners (that is, those conge ners that are

not associ at ed with pulp and paper manufacturing processes) were detected in th e dissolved

and/or solid fractions of effluent. T he majority of furan co ngeners det ected in effl uent were

observed in the solid fra c tion.

June 2006

As shown in Table 25, 2

, 3,7,8-TCDF was detect ed at the Sn ake River upstream river sampling

locations a nd three of five (LGP-13/14, LGP-06, and LGP-01) do wnstream ri ver samplin g

locations. All concentrat ions are less than the to xicity benchmark for 2,3,7,8-TCDF of 0.2 pg/L

used in EPA’s Monitoring Plan as appended to NOAA Fisheries’ Biological Opinion. Four furan

congeners (1,2,4,7,8-PeCDF, 2,3,4,7,8-PeCFD, 1,2,3,7,8,9-HxCDF, and 2,3,4,6,7,8-HxCDF )

were not de tected in up stream samples, but we re detected in at least o ne downstre a m sample

. The remaining 2,3,7,8-substituted f u ran conge ners were detected in at least o ne upstrea m

sample and at least one downstream sample.

Table 25 an d Figure 23 show conce n trations of dioxin in effl uent. 2,3,7, 8-TCDF wa s detected i n

the dissolve d fraction of effluent at a concentra tion of 0.03 9 pg/L, and in the solid fraction of

effluent at a concentrati on of 0.13 p g /L, both of which are less than the toxicity ben chmark for

2,3,7,8-TCDF of 0.2 pg/L used in EPA’s M oni toring Plan as appended to NOAA Fisheries’

Page 2 1Potlatch F o rest Products Corp oratio n

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 06

Le w i st on, ID

Janu ar y 20 07



### Biological O pinion. Some higher-chlorinated fu ran congeners (that is, those conge ners that are

not associ at ed with pulp and paper manufacturing processes) were detected in th e dissolved

and/or solid fractions of effluent. T he majority of furan co ngeners det ected in effl uent were

observed in the solid fra c tion.

September 2006

As shown in Table 26, 0nly 2,3, 7,8-TCDD and 2,3,7,8-TCDF were analyzed during the

September 2006 round. 2,3,7,8-TCDF was detected at the Snake River upstream rive r

sampling lo cations and all downstr eam river sa mpling locations. All concentratio n s are less

than the toxicity benchmark for 2,3,7,8-TCDF of 0.2 pg/L used in EPA’s Monitoring Plan as

appended to NOAA Fish e ries’ Biolog ical Opinion.

Table 26 an d Figure 23 show conce n trations of dioxin in effl uent. 2,3,7, 8-TCDF wa s detected i n

the dissolved fraction of effluent a t a concentra tion of 0.0 3 03 pg/L, an d in the sol i d fraction of

effluent at a concentratio n of 0.0274 pg/L, both o f which are l e ss than the toxicity benchmark for

2,3,7,8-TCDFof 0.2 pg/L used in EPA’s M oni toring Plan as appended to NOAA Fisheries’

Biological O pinion.

Page 2 2Potlatch F o rest Products Corp oratio n

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 06

Le w i st on, ID

Janu ar y 20 07



### 5.0 SUMMA R Y AND CON C L USIONS

This report presents th e results o f sampling co nducted dur ing 2006 to complete the Quarterly

Surface Water and Efflu ent Study and the Wee k ly Receiving Water Monitoring Stu d y, both part

of the Tier 1 Endangered Species Act Monit oring and NPDES Permit Compliance Monitoring

required in non-discreti onary terms and conditions set forth by the Se rvices in their Biological

Opinions on the re-issua n ce of Potlat ch’s NPDES permit by EPA.

Receiving water and effl uent data co llected durin g the monitoring program has characterized

the water quality at:

• Two reference location s (Snake River upstream of the effluent and the Clearwater Rive r

upstream of the conflu ence with the Snake River) durin g both weekly and quarterly

monitoring programs;

• Four locatio ns in the Snake River, downstream of the Potlatch efflu ent during weekly

monitoring; and

• Six location s in the Snake River, downstream of the Potl atch effluen t during qua rterly

monitoring.

The report presents al l analytical r e sults and discusses t he temporal and spatia l trends in

measured parameters selected for t his investiga tion.

The results of both the Weekly Receiving Wate r Monitoring Study and the Quarterly Surface

Water and Effluent Study re vealed no indicatio ns that the Facility’s effl uent has any influence on

downstream parameter measureme n ts. No m eaningful diff e rences bet ween reference locat ion

conditions and downstream conditions were obs erved. With a few exceptions, a l l

measureme n ts complied with toxicity benchmarks and appli cable water quality standards. The

few exceptions occurred at referen c e loca t ions or at the fa rthest down s tream sampling lo catio n

from the Facility.

In conclusio n, the results of sampling and analy sis upstream and downstream of the Facility

support the finding in EPA’s Biologi cal Evaluation and the Services ’ Biological Opinions that the

EPA’s re-issuance of Potlatch’s NPDES permi t is not likely to jeopardize t he continued

existence of Snake Rive r steelhead, Snake Rive r spring/summer and fall Chinook salmon, and

Snake River sockeye sal m on, nor result in th e d e struction or adverse mo dification of designated

critica l habi tat for Snake River s p ring/summer and fall Chinook salmon and Snake Rive r

sockey e sal m on.

Page 2 3Potlatch F o rest Products Corp oratio n

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 06

Le w i st on, ID

Janu ar y 20 07



### REFER E NC ES

AMEC Earth and Environmental, Inc. (AMEC) and Ancho r Environmental (Anch o r). 2005.

Quality Ass u rance Project Plan for Endangered Species Act Monitoring and NPDES Permit

Compliance Monitoring. Potlatch Corporation Le wiston Facil i t y. Ma y 200 5.

National Oceanic and A t mospheric Administration Fisherie s Service (NOAA Fisheries). 2004.

Endangered Species Act Section 7 Consultat i on Biological Opinion And Magnu son-Stevens

Fishery Conservation and Management Act Essential Fish Habitat Consultation. Ap ril 2004.

U.S. EPA. 2003. Biological Evaluation of the Potlatch Corporation Pulp and Paper Mill in

Lewiston, Id aho. December 2003.

U.S. EPA. 2005. Authorizatio n to Discharge Under the Natio nal Pollutant Discharge

Elimination System. Permit No.: ID0001163. Po tlatch Corporation 803 Mill Road, Lewiston,

Idaho.

Page 2 4

# TABLES

### Table 1

Coordinates of Sample Locations on the Snake River and Clearwater River.

Potlatch Lewiston Mill

Sample ID Latitude Longitude

CR-REF 46 15.2988 -116 33.51

SR-REF 46 23.247 -117 02.731

LGP-14 46 25.8579 -117 02.4506

LGP-13 46 25.5650 -117 02.5940

LGP-11 46 25.5418 -117 03.9994

LGP-09 46 24.9105 -117 05.4103

LGP-06 46 25.6274 -117 09.5797

LGP-01 46 33.2666 -117 16.5655Table 2Mean Velocity (ft/s) Results from Weekly Receiving Water Monitoring StudyTier 1 Endangered Species Act Monitoring and NPDES Permit Compliance MonitoringStudies Conducted in 2006Potlatch Mill, Lewiston, IDSampling Date SR REF CR REF LGP-13 LGP-11 LGP-09 LGP-06 LGP-0107/05/2006 1.05 2.20 0.39 0.53 0.61 0.44 0.1807/11/20060.19 2.93 * * 0.10 0.19 0.0107/18/20060.52 0.72 0.27 0.23 0.30 0.38 0.2407/25/20060.38 3.03 0.24 0.15 0.22 0.22 0.1707/31/20060.19 2.05 0.19 0.13 0.11 0.19 0.1508/08/20060.26 3.67 * 0.48 0.37 0.18 0.0908/15/20060.23 * 0.23 0.22 0.11 0.13 0.1408/21/20060.21 0.44 0.12 0.21 0.20 0.21 0.1008/30/20060.15 0.44 0.53 0.38 0.36 0.12 0.2209/05/20060.22 0.41 0.25 0.37 0.24 0.22 0.1309/12/20060.22 0.77 0.07 0.10 0.12 0.29 0.6609/19/20060.31 * 0.09 0.07 0.22 0.11 0.2109/26/20060.44 0.33 0.31 0.14 0.15 0.14 0.3710/03/20061.12 3.25 1.10 0.73 0.73 0.37 0.1310/09/20060.21 0.32 0.13 0.10 0.22 0.12 0.4610/16/20060.22 0.32 0.31 0.22 0.35 1.23 0.2410/23/20060.29 1.71 0.73 0.77 0.22 0.08 0.22Average0.37 1.51 0.33 0.30 0.27 0.27 0.22Median 0.23 0.77 0.25 0.22 0.22 0.19 0.18Min 0.15 0.32 0.07 0.07 0.10 0.08 0.01Max1.12 3.67 1.10 0.77 0.73 1.23 0.66Notes:*: Measurement not available for specific date/locationTable 3Mean pH Results from Weekly Receiving Water Monitoring StudyTier 1 Endangered Species Act Monitoring and NPDES Permit Compliance MonitoringStudies Conducted in 2006Potlatch Mill, Lewiston, IDSampling Date SR REF CR REF LGP-13 LGP-11 LGP-09 LGP-06 LGP-0107/05/2006 7.63 7.80 7.70 7.82 7.84 7.96 7.6607/11/2006 8.15 8.18 8.22 8.12 7.91 8.28 7.9807/18/2006 8.01 8.18 8.30 8.26 7.98 8.67 8.5907/25/2006 8.17 8.21 8.42 8.47 8.35 8.58 9.0507/31/2006 8.30 8.51 8.37 8.60 8.75 8.62 9.0308/08/2006 8.51 9.06 8.52 8.64 8.52 7.91 7.9008/15/2006 7.47 8.11 8.06 8.00 7.84 7.62 7.7908/21/2006 7.65 8.08 8.09 8.00 7.71 7.76 7.7108/30/2006 7.73 8.15 8.22 8.12 7.77 8.29 8.4209/05/2006 8.14 8.47 8.27 8.27 8.24 8.35 8.3009/12/2006 8.23 8.68 8.56 8.45 8.38 8.47 8.4109/19/2006 8.38 8.62 8.57 8.60 8.58 8.54 8.5109/26/2006 7.59 8.20 8.18 8.17 8.14 8.05 7.6510/03/2006 7.47 7.73 7.72 7.90 7.85 7.67 7.5510/09/2006 7.62 8.32 8.28 8.25 8.23 8.09 7.6910/16/2006 7.50 6.89 8.02 8.15 8.22 8.28 8.2810/23/2006 8.18 8.63 8.35 8.58 8.58 8.60 8.50Average7.92 8.23 8.23 8.26 8.17 8.22 8.18Median 8.01 8.20 8.27 8.25 8.22 8.28 8.28Min 7.47 6.89 7.70 7.82 7.71 7.62 7.55Max8.51 9.06 8.57 8.64 8.75 8.67 9.05Table 4Mean Dissolved Oxygen (DO, mg/L) Results from Weekly Receiving Water Monitoring StudyTier 1 Endangered Species Act Monitoring and NPDES Permit Compliance MonitoringStudies Conducted in 2006Potlatch Mill, Lewiston, IDSampling Date SR REF CR REF LGP-13 LGP-11 LGP-09 LGP-06 LGP-0107/05/2006 8.15 9.66 7.86 7.88 7.90 8.46 7.8407/11/20067.83 10.61 8.19 7.91 7.93 8.84 8.4207/18/20067.28 9.87 7.70 7.64 7.78 8.56 8.4607/25/20066.84 10.08 7.84 7.59 8.04 8.58 9.0507/31/20066.48 10.38 8.67 7.68 8.33 7.61 8.4108/08/20067.31 9.95 7.59 7.57 8.01 8.75 8.9308/15/20067.59 10.44 8.03 8.03 8.47 8.46 9.2908/21/20067.27 10.09 7.88 7.77 8.37 8.11 8.4408/30/20067.06 10.01 8.33 7.67 8.03 7.60 8.4409/05/20067.42 10.27 8.11 8.10 8.69 8.36 8.5109/12/20067.99 10.04 8.24 7.75 8.06 8.02 8.5009/19/20067.63 9.21 8.05 8.18 8.35 7.97 7.7209/26/20067.87 9.13 7.70 7.84 8.03 7.71 7.8510/03/20068.16 9.44 8.01 7.72 7.88 8.19 7.7010/09/20067.86 9.68 7.94 7.94 8.11 7.74 7.7110/16/20068.01 9.35 7.89 7.98 8.05 8.01 8.1910/23/20067.66 9.21 8.02 8.13 8.35 8.00 8.29Average 7.55 9.85 8.00 7.85 8.14 8.17 8.34Median 7.63 9.95 8.01 7.84 8.05 8.11 8.42Min 6.48 9.13 7.59 7.57 7.78 7.60 7.70Max 8.16 10.61 8.67 8.18 8.69 8.84 9.29Table 5Mean Temperature (degrees Celsius) Results from Weekly Receiving Water Monitoring StudyTier 1 Endangered Species Act Monitoring and NPDES Permit Compliance MonitoringStudies Conducted in 2006Potlatch Mill, Lewiston, IDSampling DateSR REF CR REF LGP-13 LGP-11 LGP-09 LGP-06 LGP-0107/05/2006 21.29 15.23 19.63 19.65 19.73 19.74 20.9107/11/200621.57 12.58 19.13 19.05 18.88 19.04 19.5407/18/200622.24 11.30 18.89 18.63 18.84 19.54 19.6407/25/200623.72 10.42 18.16 20.40 19.65 20.60 22.3507/31/200622.21 9.87 16.35 18.23 17.17 19.14 21.0208/08/200622.84 10.95 21.12 21.08 20.42 20.60 20.9208/15/200621.96 10.51 17.39 18.48 17.93 18.54 20.4008/21/200622.02 10.54 17.92 19.47 18.36 19.09 19.3808/30/200621.22 10.64 17.90 19.62 18.90 18.38 18.8709/05/200620.67 10.47 17.04 18.25 18.66 18.62 17.7709/12/200619.26 11.28 17.25 19.32 18.18 18.59 19.1509/19/200618.39 12.79 17.95 18.13 17.91 17.49 17.7709/26/200617.46 12.80 17.08 17.72 17.35 16.80 16.8210/03/200620.90 14.00 19.27 19.43 19.63 19.82 20.6110/09/200615.28 10.88 14.95 15.45 15.45 15.77 16.3210/16/200614.61 10.44 14.38 14.45 14.47 14.36 14.5910/23/200618.22 12.53 18.05 18.18 17.77 17.50 17.89Average20.23 11.60 17.79 18.56 18.19 18.45 19.05Median21.22 10.95 17.92 18.63 18.36 18.62 19.38Min14.61 9.87 14.38 14.45 14.47 14.36 14.59Max23.72 15.23 21.12 21.08 20.42 20.60 22.35Table 6Total Suspended Solids (TSS, mg/L) Results from Weekly Receiving Water Monitoring StudyTier 1 Endangered Species Act Monitoring and NPDES Permit Compliance MonitoringStudies Conducted in 2006Potlatch Mill, Lewiston, IDSampling Week07/05/20065 2.5 U 2.5 U 1 3 2.5 5 3.33 2.507/11/20065 2.5 U 2.5 U 1 3 2.5 5 3.33 2.507/18/20062.5 U 2.5 U 2.5 U 0 3 ND ND ND ND07/25/20062.5 U 8 2.5 U 1 3 2.5 8 4.33 2.507/31/200616 25 2.5 U 2 3 2.5 25 14.5 1608/08/20062.5 U 2.5 U 2.5 U 0 3 ND ND ND ND08/15/20062.5 U 2.5 U 2.5 U 0 3 ND ND ND ND08/21/20062.5 U 2.5 U 2.5 U 0 3 ND ND ND ND08/30/20062.5 U 2.5 U 2.5 U 0 3 ND ND ND ND09/05/20062.5 U 2.5 U 2.5 U 0 3 ND ND ND ND09/12/20062.5 U 2.5 U 2.5 U 0 3 ND ND ND ND09/19/20062.5 U 6 2.5 U 1 3 2.5 6 3.67 2.509/26/20062.5 U 2.5 U 2.5 U 0 3 ND ND ND ND10/03/20062.5 U 2.5 U 2.5 U 0 3 ND ND ND ND10/09/20062.5 U 2.5 U 2.5 U 0 3 ND ND ND ND10/16/20062.5 U 5 2.5 U 1 3 2.5 5 3.33 2.510/23/20062.5 U 2.5 U 2.5 U 0 3 ND ND ND NDAverage3.588 4.500 2.500Median 2.5 2.5 2.5Min 2.5 2.5 2.5Max16 25 2.5Samples 17 17 17Detects 3 4 0Sampling WeekDetects Samples Minimum Maximum Average Median07/05/20067 2.5 U 2.5 U 2.5 U 2.5U2.5 U 2.5 U 5 6 7 410 2.5 7 4 2.507/11/20062.5 U 2.5 U 2.5 U 2.5 U 2.5U2.5 U 2.5 U 6 2.5 U 2.5 U 110 2.5 6 2.85 2.507/18/20062.5 U 2.5 U 2.5 U 2.5 U 2.5U2.5 U 5 2.5 U 5 5 310 2.5 5 3.25 2.507/25/20062.5 U 2.5 U 2.5 U 2.5 U 2.5U2.5 U 2.5 U 5 2.5 U 2.5 U 110 2.5 5 2.75 2.507/31/20067 2.5 U 2.5 U 2.5 U 2.5U2.5 U 7 8 5 2.5 U 410 2.5 8 4.2 2.508/08/20062.5 U 2.5 U 2.5 U 2.5 U 2.5U2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 010 ND ND ND ND08/15/20062.5 U 2.5 U 2.5 U 2.5 U 2.5U2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 010 ND ND ND ND08/21/20062.5 U 2.5 U 2.5 U 2.5 U 2.5U2.5 U 2.5 U 2.5 U 2.5 U 10 110 2.5 10 3.25 2.508/30/20062.5 U 2.5 U 2.5 U 2.5 U 2.5U2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 010 ND ND ND ND09/05/20062.5 U 2.5 U 2.5 U 2.5 U 2.5U2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 010 ND ND ND ND09/12/20062.5 U 2.5 U 2.5 U 2.5 U 2.5U2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 010 ND ND ND ND09/19/20066 7 2.5 U 2.5 U 2.5U2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 210 2.5 7 3.3 2.509/26/20062.5 U 2.5 U 2.5 U 2.5 U 2.5U2.5 U 2.5 U 2.5 U 7 2.5 U 110 2.5 7 2.95 2.510/03/20062.5 U 2.5 U 2.5 U 2.5 U 2.5U2.5 U 2.5 U 7 5 6 310 2.5 7 3.55 2.510/09/20062.5 U 2.5 U 2.5 U 2.5 U 2.5U2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 010 ND ND ND ND10/16/20062.5 U 2.5 U 2.5 U 2.5 U 2.5U2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 010 ND ND ND ND10/23/20062.5 U 2.5 U 2.5 U 2.5 U 2.5U2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 010 ND ND ND NDAverage3.235 2.765 2.500 2.500 2.500 2.500 2.912 3.588 3.412 3.559Median 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5Min 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5Max7 7 2.5 2.5 2.5 2.5 7 8 7 10Samples 17 17 17 17 17 17 17 17 17 17Detects 3 1 0 0 0 0 2 5 5 4Notes:U: Analyte not detected. Value is one half the reporting detection limit.J: Estimated valueDuplicates averaged using one half the reporting detection limit. If parent and duplicate qualifiers are different from each other, both are shown with an "&" separating them.LGP-01-S LGP-01-MDLGP-09-S(Avg w/ LGP-09-MD LGP-06-S LGP-06-MDLGP-13-S LGP-13-MD LGP-11-S LGP-11-MDSummary of Downstream SamplesSR-REF-S SR-REF-MD CR-REF-SSummary of Upstream SamplesDetects Samples Minimum Maximum Average MedianTable 7Biochemical Oxygen Demand (BOD, mg/L) Results from Weekly Receiving Water Monitoring StudyTier 1 Endangered Species Act Monitoring and NPDES Permit Compliance MonitoringStudies Conducted in 2006Potlatch Mill, Lewiston, IDSampling Week07/05/20067 X 2 UX 22 X 2 3 2 22 10.33 707/11/20062 U 2 U 0.7 J 1 3 0.7 2 1.57 207/18/20062 UX 2 UX 2 UX 0 3 ND ND ND ND07/25/20060.8 JX 0.6 JX 2 UX 2 3 0.6 2 1.13 0.807/31/20062 U 2 U 2 U 0 3 ND ND ND ND08/08/20060.6 JX 2 UX 2 UX 1 3 0.6 2 1.53 208/15/20061 JX 1.1 JX 1 JX 3 3 1 1.1 1.03 108/21/20060.5 JX 0.5 JX 2 UX 2 3 0.5 2 1.00 0.508/30/20062 UX 2 UX 2 UX 0 3 ND ND ND ND09/05/20062 UX 0.6 X 2 UX 1 3 0.6 2 1.53 209/12/20061.4 XJ 0.9 XJ 0.8 XJ 3 3 0.8 1.4 1.03 0.909/19/20060.8 JX 1 JX 0.9 JX 3 3 0.8 1 0.90 0.909/26/20060.8 JX 0.7 JX 0.7 JX 3 3 0.7 0.8 0.73 0.710/03/20062 UX 0.5 JX 1.2 JX 2 3 0.5 2 1.23 1.210/09/20060.7 J 2 U 2 U 1 3 0.7 2 1.57 210/16/20060.5 2 U 2 U 1 3 0.5 2 1.50 210/23/20060.9 1.9 2 U 2 3 0.9 2 1.60 1.9Average1.588 1.400 2.782Median1 1.9 2Min0.5 0.5 0.7Max7 2 22Samples17 17 17Detects11 9 7Sampling WeekDetects Samples Minimum Maximum Average Median07/05/20067 X 14 X 16 X 14 X 137X74 X 2.3 J 3.2 J 3 J 4 1010 2.3 137 27.45 10.507/11/20062U 2U 2U 2U 2U3J 2U 2U 2U 2U 110 2 3 2.1 207/18/20062 UX 2 UX 2 UX 2 UX 2UX0.5 X 2 UX 0.6 X 0.5 X 2 UX 310 0.5 2 1.56 207/25/20062 UX 2 UX 0.7 JX 2 UX 0.9JX0.9 JX 0.7 2 U 2 1.1 610 0.7 2 1.43 1.5507/31/20060.9 J 0.6 J 2 U 0.5 J 1.5J & U1.1 J 1.3 JX 0.7 JX 2.1 JX 1.4 JX 910 0.5 2.1 1.21 1.208/08/20060.9 JX 2 UX 0.8 JX 0.5 JX 0.75JX2 UX 1 J 0.5 J 0.7 J 1.3 J 810 0.5 2 1.045 0.8508/15/20060.5 JX 0.9 JX 0.9 JX 0.5 JX 1.1JX1.6 JX 0.5 J 0.7 J 1.9 J 1.1 J 1010 0.5 1.9 0.97 0.908/21/20062 UX 0.5 JX 2 UX 2 UX 2UX2 UX 2 U 2 U 0.7 J 0.5 J 310 0.5 2 1.57 208/30/20062 UX 2 UX 1 X 2 UX 2UX2 UX 0.7 J 2 U 0.9 J 0.7 J 410 0.7 2 1.53 209/05/20062 UX 0.5 JX 2 UX 2 UX 1.3JX & UX2 UX 2 U 2 U 2 U 2 U 210 0.5 2 1.78 209/12/20061 JX 1 JX 1 JX 0.9 JX 1.05XJ1.1 XJ 1 J 1 J 1.2 J 1 J 1010 0.9 1.2 1.025 109/19/20060.8 JX 0.9 JX 0.9 JX 1 JX 0.85JX0.8 JX 1.3 JX 0.8 JX 1.6 JX 1.1 JX 1010 0.8 1.6 1.005 0.909/26/20060.8 JX 0.5 JX 0.8 JX 1 JX 0.7JX0.6 JX 0.5 JX 0.7 JX 2 U 0.5 J 910 0.5 2 0.81 0.710/03/20060.6 JX 2 UX 0.5 JX 0.5 JX 1.45UX & JX0.6 JX 0.6 JX 0.8 JX 2 U 2 U 710 0.5 2 1.105 0.710/09/20060.6 J 2 U 2 U 2 U 2U2 U 0.6 J 0.6 J 2 U 2 U 310 0.6 2 1.58 210/16/20062 U 2 U 2 U 2 U 0.65 0.6 0.8 0.6 0.8 1 610 0.6 2 1.245 0.910/23/20062U 2U 2U 2U 2U0.9 2 U 2 U 2 U 2 U 110 0.9 2 1.89 2Average1.71 2.17 2.27 2.17 9.37 5.63 1.25 1.31 1.61 1.51Median2.00 2.00 2.00 2.00 1.45 1.10 1.00 0.80 2.00 1.30Min0.5 0.5 0.5 0.5 0.65 0.5 0.5 0.5 0.5 0.5Max7 14 16 14 137 74 2.3 3.2 3 4Samples17 17 17 17 17 17 17 17 17 17Detects9 8 9 8 11 12 12 11 11 11Notes:U: Analyte not detected. Value is one half the reporting detection limit.J: Estimated valueX: Holding time exceededND: Not detectedDuplicates averaged using one half the reporting detection limit. If parent and duplicate qualifiers are different from each other, both are shown with an "&" separating them.Summary of Downstream SamplesSummary of Upstream SamplesDetects Samples Minimum Maximum Average MedianLGP-06-MD LGP-01-S LGP-01-MDLGP-11-MDLGP-09-S(Avg w/ Dup) LGP-09-MD LGP-06-SSR-REF-S SR-REF-MD CR-REF-SLGP-13-S LGP-13-MD LGP-11-STable 8Ammonia Nitrogen Results (mg/L) from Weekly Receiving Water Monitoring StudyTier 1 Endangered Species Act Monitoring and NPDES Permit Compliance MonitoringStudies Conducted in 2006Potlatch Mill, Lewiston, IDSampling Date07/05/20060.007 J 0.025 U 0.025 U 1 3 0.007 0.025 0.02 0.02507/11/20060.025 U 0.025 U 0.025 U 0 3 ND ND ND ND07/18/20060.11 0.025 U 0.025 U 1 3 0.025 0.11 0.05 0.02507/25/20060.025 U 0.025 U 0.025 U 0 3 ND ND ND ND07/31/20060.009 J 0.01 J 0.025 U 2 3 0.009 0.025 0.01 0.0108/08/20060.013 J 0.012 J 0.009 J 3 3 0.009 0.013 0.01 0.01208/15/20060.015 J 0.009 J 0.009 J 3 3 0.009 0.015 0.01 0.00908/21/20060.039 J 0.024 J 0.018 J 3 3 0.018 0.039 0.03 0.02408/30/20060.017 J 0.017 J 0.011 J 3 3 0.011 0.017 0.02 0.01709/05/20060.047 J 0.043 J 0.044 J 3 3 0.043 0.047 0.04 0.04409/12/20060.029 J 0.02 J 0.016 J 3 3 0.016 0.029 0.02 0.0209/19/20060.025 U 0.025 U 0.025 U 0 3 ND ND ND ND09/26/20060.015 J 0.025 U 0.025 U 1 3 0.015 0.025 0.02 0.02510/03/20060.017 J 0.025 U 0.007 J 2 3 0.007 0.025 0.02 0.01710/09/20060.038 J 0.031 J 0.032 J 3 3 0.031 0.038 0.03 0.03210/16/20060.041 J 0.02 J 0.012 J 3 3 0.012 0.041 0.02 0.0210/23/20060.019 J 0.013 J 0.015 J 3 3 0.013 0.019 0.02 0.015Average0.029 0.022 0.020Median0.025 0.025 0.025Min0.007 0.009 0.007Max0.11 0.043 0.044Samples17 17 17Detects14 10 10Sampling DateDetects Samples Minimum Maximum Average Median07/05/20060.025 U 0.007 J 0.006 J 0.025 U 0.025U0.025 U 0.009 J 0.025 U 0.025 U 0.013 J 410 0.006 0.025 0.0185 0.02507/11/20060.025 U 0.025 U 0.025 U 0.025 U 0.025U0.025 U 0.025 U 0.025 U 0.025 U 0.025 U 010 ND ND ND ND07/18/20060.025 U 0.025 U 0.007 J 0.025 U 0.025U0.011 J 0.025 U 0.025 U 0.025 U 0.025 U 210 0.007 0.025 0.0218 0.02507/25/20060.025 U 0.025 U 0.025 U 0.025 U 0.025U0.025 U 0.025 U 0.025 U 0.025 U 0.025 U 010 ND ND ND ND07/31/20060.008 J 0.008 J 0.025 U 0.025 U 0.0235J & U0.025 U 0.025 U 0.006 J 0.025 U 0.025 U 410 0.006 0.025 0.01955 0.02508/08/20060.028 J 0.011 J 0.015 J 0.018 J 0.017J0.018 J 0.021 J 0.037 J 0.01 J 0.027 J 1010 0.01 0.037 0.0202 0.01808/15/20060.017 J 0.02 J 0.015 J 0.015 J 0.013J0.023 J 0.012 J 0.013 J 0.018 J 0.024 J 1010 0.012 0.024 0.017 0.01608/21/20060.02 J 0.02 J 0.042 J 0.033 J 0.027J0.019 J 0.019 J 0.02 J 0.016 J 0.042 J 1010 0.016 0.042 0.0258 0.0208/30/20060.035 J 0.021 J 0.021 J 0.023 J 0.0225J0.022 J 0.017 J 0.019 J 0.03 J 0.029 J 1010 0.017 0.035 0.02395 0.0222509/05/20060.036 J 0.047 J 0.038 J 0.039 J 0.0395J0.037 J 0.037 J 0.043 J 0.041 J 0.05 1010 0.036 0.05 0.04075 0.0392509/12/20060.029 J 0.031 J 0.022 J 0.027 J 0.0265J0.027 J 0.025 J 0.029 J 0.02 J 0.033 J 1010 0.02 0.033 0.02695 0.02709/19/20060.025 U 0.031 J 0.025 U 0.017 J 0.012J0.014 J 0.025 U 0.007 J 0.013 J 0.011 J 710 0.007 0.031 0.018 0.015509/26/20060.015 J 0.019 J 0.009 J 0.014 J 0.015J0.017 J 0.015 J 0.018 J 0.032 J 0.027 J 1010 0.009 0.032 0.0181 0.01610/03/20060.008 J 0.019 J 0.012 J 0.014 J 0.013J0.014 J 0.027 J 0.02 J 0.025 J 0.023 J 1010 0.008 0.027 0.0175 0.016510/09/20060.03 J 0.025 J 0.029 J 0.029 J 0.024J0.03 J 0.025 J 0.028 J 0.043 J 0.038 J 1010 0.024 0.043 0.0301 0.02910/16/20060.02 J 0.024 J 0.019 J 0.022 J 0.015J0.019 J 0.031 J 0.023 J 0.04 J 0.042 J 1010 0.015 0.042 0.0255 0.022510/23/20060.006 J 0.018 J 0.015 J 0.015 J 0.012J0.019 J 0.016 J 0.017 J 0.05 0.016 J 1010 0.006 0.05 0.0184 0.016Average0.022 0.022 0.021 0.023 0.021 0.022 0.022 0.022 0.027 0.028Median0.025 0.021 0.021 0.025 0.0240.022 0.025 0.023 0.025 0.025Min0.006 0.007 0.006 0.0140.012 0.011 0.009 0.006 0.01 0.011Max0.036 0.047 0.042 0.039 0.040 0.037 0.037 0.043 0.05 0.05Samples17 17 17 17 17 17 17 17 17 17Detects12 14 13 12 13 13 12 13 12 13Notes:U: Analyte not detected. Value is one half the reporting detection limit.J: Estimated valueND: Not detectedDuplicates averaged using one half the reporting detection limit. If parent and duplicate qualifiers are different from each other, both are shown with an "&" separating them.LGP-01-S LGP-01-MDLGP-09-S(Avg with LGP-09-MD LGP-06-S LGP-06-MDSummary of Upstream SamplesDetects Samples Minimum Maximum Average MedianLGP-13-S LGP-13-MD LGP-11-SLGP-11-MDSummary of Downstream SamplesSR-REF-S SR-REF-MD CR-REF-STable 9Nitrate/Nitrite Nitrogen Results (mg/L) from Weekly Receiving Water Monitoring StudyTier 1 Endangered Species Act Monitoring and NPDES Permit Compliance MonitoringStudies Conducted in 2006Potlatch Mill, Lewiston, IDSampling Date07/05/20060.11 0.11 0.013 J 3 3 0.013 0.11 0.08 0.1107/11/20060.15 0.16 0.017 J 3 3 0.017 0.16 0.11 0.1507/18/20060.19 0.15 0.025 U 2 3 0.025 0.19 0.12 0.1507/25/20060.26 0.26 0.038 J 3 3 0.038 0.26 0.19 0.2607/31/20060.23 0.24 0.027 J 3 3 0.027 0.24 0.17 0.2308/08/20060.25 0.25 0.017 J 3 3 0.017 0.25 0.17 0.2508/15/20060.28 0.29 0.033 J 3 3 0.033 0.29 0.20 0.2808/21/20060.33 0.5 0.044 J 3 3 0.044 0.5 0.29 0.3308/30/20060.38 0.38 0.045 J 3 3 0.045 0.38 0.27 0.3809/05/20060.35 0.39 0.045 J 3 3 0.045 0.39 0.26 0.3509/12/20060.42 0.42 0.031 J 3 3 0.031 0.42 0.29 0.4209/19/20060.41 0.41 0.014 J 3 3 0.014 0.41 0.28 0.4109/26/20060.45 0.43 0.011 J 3 3 0.011 0.45 0.30 0.4310/03/20060.52 0.52 0.012 J 3 3 0.012 0.52 0.35 0.5210/09/20060.55 0.61 0.013 J 3 3 0.013 0.61 0.39 0.5510/16/20060.59 0.59 0.025 U 2 3 0.025 0.59 0.40 0.5910/23/20060.57 0.09 0.007 J 3 3 0.007 0.57 0.22 0.09Average0.355 0.341 0.025Median0.35 0.38 0.025Min0.11 0.09 0.007Max0.59 0.61 0.045Samples17 17 17Detects17 17 15Sampling DateDetects Samples Minimum Maximum Average Median07/05/20060.09 0.08 0.1 0.09 0.09 0.08 0.08 0.08 0.08 0.09 1010 0.08 0.1 0.086 0.08507/11/20060.13 0.12 0.13 0.1 0.11 0.1 0.1 0.1 0.07 0.07 1010 0.07 0.13 0.103 0.107/18/20060.12 0.14 0.1 0.07 0.14 0.11 0.12 0.11 0.05 0.08 1010 0.05 0.14 0.104 0.1107/25/20060.2 0.21 0.26 0.19 0.24 0.19 0.19 0.18 0.019 J 0.049 J 1010 0.019 0.26 0.1728 0.1907/31/20060.18 0.16 0.2 0.12 0.17 0.13 0.19 0.15 0.05 J 0.11 1010 0.05 0.2 0.146 0.15508/08/20060.24 0.21 0.23 0.22 0.23 0.21 0.049 J 0.18 0.22 0.1 1010 0.049 0.24 0.1889 0.21508/15/20060.25 0.19 0.25 0.17 0.235 0.19 0.21 0.17 0.07 0.12 1010 0.07 0.25 0.1855 0.1908/21/20060.29 0.23 0.3 0.23 0.29 0.22 0.25 0.21 0.19 0.18 1010 0.18 0.3 0.239 0.2308/30/20060.39 0.29 0.38 0.33 0.37 0.28 0.33 0.28 0.18 0.18 1010 0.18 0.39 0.301 0.3109/05/20060.35 0.26 0.36 0.27 0.34 0.27 0.33 0.28 0.25 0.24 1010 0.24 0.36 0.295 0.27509/12/20060.42 0.31 0.42 0.35 0.4 0.27 0.35 0.32 0.29 0.3 1010 0.27 0.42 0.343 0.33509/19/20060.4 0.37 0.39 0.37 0.38 0.35 0.37 0.36 0.35 0.35 1010 0.35 0.4 0.369 0.3709/26/20060.4 0.39 0.42 0.4 0.41 0.39 0.35 0.36 0.38 0.38 1010 0.35 0.42 0.388 0.3910/03/20060.53 0.46 0.47 0.47 0.46 0.45 0.42 0.43 0.42 0.41 1010 0.41 0.53 0.452 0.45510/09/20060.53 0.49 0.56 0.45 0.535 0.48 0.56 0.5 0.5 0.5 1010 0.45 0.56 0.5105 0.510/16/20060.6 0.52 0.58 0.54 0.56 0.54 0.54 0.53 0.52 0.53 1010 0.52 0.6 0.546 0.5410/23/20060.57 0.53 0.55 0.5 0.5 0.55 0.44 0.45 0.51 0.51 1010 0.44 0.57 0.511 0.51Average0.33470590.292 0.335 0.286 0.321 0.283 0.287 0.27588240.24405880.247Median0.350 0.260 0.360 0.270 0.340 0.270 0.330 0.280 0.220 0.180Min0.09 0.08 0.1 0.07 0.09 0.08 0.049 0.08 0.019 0.049Max0.6 0.53 0.58 0.54 0.56 0.55 0.56 0.53 0.52 0.53Samples17 17 17 17 17 17 17 17 17 17Detects17 17 17 17 17 17 17 17 17 17Notes:U: Analyte not detected. Value is one half the reporting detection limit.J: Estimated valueND: Not detectedDuplicates averaged using one half the reporting detection limit. If parent and duplicate qualifiers are different from each other, both are shown with an "&" separating them.Summary of Upstream SamplesDetects Samples Minimum Maximum Average MedianLGP-06-MD LGP-01-S LGP-01-MDSummary of Downstream SamplesLGP-11-MDLGP-09-S (Avgwith Dup) LGP-09-MD LGP-06-SSR-REF-S SR-REF-MD CR-REF-SLGP-13-S LGP-13-MD LGP-11-STable 10Total Kjeldahl Nitrogen (TKN, mg/L) Results from Weekly Receiving Water Monitoring StudyTier 1 Endangered Species Act Monitoring and NPDES Permit Compliance MonitoringStudies Conducted in 2006Potlatch Mill, Lewiston, IDSampling Date07/05/20060.2 0.3 0.3 3 3 0.2 0.3 0.27 0.307/11/20060.3 0.4 0.4 3 3 0.3 0.4 0.37 0.407/18/20060.3 0.2 0.1 3 3 0.1 0.3 0.20 0.207/25/20060.5 0.3 0.4 3 3 0.3 0.5 0.40 0.407/31/20060.3 0.5 0.2 3 3 0.2 0.5 0.33 0.308/08/20060.3 0.4 0.3 3 3 0.3 0.4 0.33 0.308/15/20060.05 U 0.1 0.05 U 1 3 0.05 0.1 0.07 0.0508/21/20060.4 0.3 0.2 3 3 0.2 0.4 0.30 0.308/30/20060.4 0.2 0.05 U 2 3 0.05 0.4 0.22 0.209/05/20060.6 0.3 0.4 3 3 0.3 0.6 0.43 0.409/12/20060.2 0.4 0.2 3 3 0.2 0.4 0.27 0.209/19/20060.8 0.5 0.4 3 3 0.4 0.8 0.57 0.509/26/20060.4 0.5 0.4 3 3 0.4 0.5 0.43 0.410/03/20060.3 0.3 0.05 U 2 3 0.05 0.3 0.22 0.310/09/20060.3 0.2 0.4 3 3 0.2 0.4 0.30 0.310/16/20060.1 0.2 0.1 3 3 0.1 0.2 0.13 0.110/23/20060.2 0.4 0.4 3 3 0.2 0.4 0.33 0.4Average0.332 0.324 0.256Median0.3 0.3 0.3Min0.05 0.1 0.05Max0.8 0.5 0.4Samples17 17 17Detects16 17 14Sampling DateDetects Samples Minimum Maximum Average Median07/05/20060.3 0.2 0.3 0.2 0.2 0.1 0.1 0.2 0.4 0.3 1010 0.1 0.4 0.23 0.207/11/20060.4 0.5 0.4 0.9 0.35 0.4 0.4 0.5 0.4 0.4 1010 0.35 0.9 0.465 0.407/18/20060.2 0.3 0.2 0.3 0.3 0.3 0.2 0.2 0.3 0.2 1010 0.2 0.3 0.25 0.2507/25/20060.5 0.4 0.3 1.6 0.4 0.5 0.4 0.4 0.4 0.3 1010 0.3 1.6 0.52 0.407/31/20060.4 0.3 0.4 0.6 0.65 0.6 0.6 0.6 0.6 0.5 1010 0.3 0.65 0.525 0.608/08/20060.2 0.4 0.2 0.3 0.35 0.3 0.6 0.4 0.4 0.4 1010 0.2 0.6 0.355 0.37508/15/20060.2 0.05 U 0.05 U 0.05 U 0.125U &0.2 0.2 0.05 U 0.2 1.2 510 0.05 1.2 0.2325 0.162508/21/20060.2 0.4 0.2 0.3 0.35 0.4 0.3 0.3 0.4 0.4 1010 0.2 0.4 0.325 0.32508/30/20060.4 0.3 0.3 0.2 0.45 0.6 0.2 0.4 0.5 0.3 1010 0.2 0.6 0.365 0.3509/05/20060.3 0.3 0.4 0.3 0.4 0.3 0.2 0.2 0.3 0.3 1010 0.2 0.4 0.3 0.309/12/20060.4 0.3 0.3 0.3 0.4 0.7 0.3 0.6 0.3 0.3 1010 0.3 0.7 0.39 0.309/19/20060.3 0.6 0.3 0.4 0.175& U0.3 0.3 0.2 1 1 1010 0.175 1 0.4575 0.309/26/20060.4 0.5 0.4 0.4 0.45 0.5 0.4 0.3 0.4 0.4 1010 0.3 0.5 0.415 0.410/03/20060.3 0.7 0.1 0.3 0.55 0.5 0.4 0.7 0.6 0.3 1010 0.1 0.7 0.445 0.4510/09/20060.4 0.4 0.2 0.3 0.5 0.4 0.2 0.4 0.4 0.3 1010 0.2 0.5 0.35 0.410/16/20060.2 0.5 0.3 0.2 0.175U &0.4 1 0.2 0.4 0.3 910 0.175 1 0.3675 0.310/23/20060.3 0.4 0.4 0.5 0.35 0.3 0.3 0.5 0.5 0.5 1010 0.3 0.5 0.405 0.4Average0.318 0.385 0.279 0.421 0.363 0.400 0.359 0.362 0.441 0.435Median0.3 0.4 0.3 0.3 0.35 0.4 0.3 0.4 0.4 0.3Min0.2 0.05 0.05 0.05 0.125 0.1 0.1 0.05 0.2 0.2Max0.5 0.7 0.4 1.6 0.65 0.7 1 0.7 1 1.2Samples17 17 17 17 17 17 17 17 17 17Detects17 16 16 16 15 17 17 16 17 17Notes:U: Analyte not detected. Value is one half the reporting detection limit.J: Estimated valueND: Not detectedDuplicates averaged using one half the reporting detection limit. If parent and duplicate qualifiers are different from each other, both are shown with an "&" separating them.LGP-01-MDSummary of Downstream SamplesLGP-06-SAverage MedianLGP-06-MD LGP-01-SLGP-11-MDSamplesLGP-09-S(Avg withMinimumLGP-09-MDLGP-13-S LGP-13-MDCR-REF-SLGP-11-SSummary of Upstream SamplesSR-REF-S SR-REF-MD Detects MaximumTable 11Total Phosphorus Results (mg/L) from Weekly Receiving Water Monitoring StudyTier 1 Endangered Species Act Monitoring and NPDES Permit Compliance MonitoringStudies Conducted in 2006Potlatch Mill, Lewiston, IDSampling Date07/05/20060.05 0.03 0.008 J 3 3 0.008 0.05 0.03 0.0307/11/20060.04 0.05 0.004 J 3 3 0.004 0.05 0.03 0.0407/18/20060.03 0.03 0.005 U 2 3 0.005 0.03 0.02 0.0307/25/20060.1 0.04 0.01 3 3 0.01 0.1 0.05 0.0407/31/20060.05 0.06 0.01 3 3 0.01 0.06 0.04 0.0508/08/20060.05 0.05 0.01 3 3 0.01 0.05 0.04 0.0508/15/20060.05 0.05 0.01 3 3 0.01 0.05 0.04 0.0508/21/20060.05 0.05 0.008 J 3 3 0.008 0.05 0.04 0.0508/30/20060.08 0.07 0.01 3 3 0.01 0.08 0.05 0.0709/05/20060.07 0.07 0.01 3 3 0.01 0.07 0.05 0.0709/12/20060.06 0.06 0.005 J 3 3 0.005 0.06 0.04 0.0609/19/20060.08 0.07 0.01 3 3 0.01 0.08 0.05 0.0709/26/20060.06 0.07 0.01 3 3 0.01 0.07 0.05 0.0610/03/20060.08 0.08 0.01 3 3 0.01 0.08 0.06 0.0810/09/20060.07 0.07 0.008 J 3 3 0.008 0.07 0.05 0.0710/16/20060.08 0.08 0.01 3 3 0.01 0.08 0.06 0.0810/23/20060.05 0.05 0.01 3 3 0.01 0.05 0.04 0.05Average0.062 0.058 0.009Median0.06 0.06 0.01Min0.03 0.03 0.004Max0.1 0.08 0.01Samples17 17 17Detects17 17 16Sampling DateDetects Samples Minimum Maximum Average Median07/05/20060.03 0.02 0.03 0.020.0250.03 0.03 0.02 0.03 0.03 1010 0.02 0.03 0.0265 0.0307/11/20060.04 0.03 0.04 0.030.160.03 0.06 0.03 0.03 0.03 1010 0.03 0.16 0.048 0.0307/18/20060.03 0.03 0.03 0.020.030.03 0.03 0.03 0.03 0.04 1010 0.02 0.04 0.03 0.0307/25/20060.04 0.04 0.04 0.040.050.06 0.04 0.14 0.04 0.04 1010 0.04 0.14 0.053 0.0407/31/20060.03 0.03 0.03 0.050.030.02 0.04 0.04 0.03 0.04 1010 0.02 0.05 0.034 0.0308/08/20060.05 0.05 0.05 0.050.050.05 0.04 0.05 0.05 0.04 1010 0.04 0.05 0.048 0.0508/15/20060.05 0.04 0.04 0.040.040.04 0.04 0.04 0.04 0.06 1010 0.04 0.06 0.043 0.0408/21/20060.05 0.04 0.05 0.040.050.04 0.05 0.04 0.04 0.04 1010 0.04 0.05 0.044 0.0408/30/20060.08 0.06 0.07 0.070.080.06 0.14 0.06 0.05 0.05 1010 0.05 0.14 0.072 0.06509/05/20060.07 0.05 0.07 0.060.060.05 0.06 0.06 0.05 0.05 1010 0.05 0.07 0.058 0.0609/12/20060.06 0.05 0.06 0.060.0650.05 0.05 0.05 0.06 0.05 1010 0.05 0.065 0.0555 0.05509/19/20060.09 0.09 0.07 0.070.0950.12 0.06 0.06 0.09 0.07 1010 0.06 0.12 0.0815 0.0809/26/20060.06 0.07 0.07 0.070.070.07 0.06 0.07 0.08 0.08 1010 0.06 0.08 0.07 0.0710/03/20060.07 0.08 0.08 0.070.080.08 0.07 0.08 0.06 0.07 1010 0.06 0.08 0.074 0.07510/09/20060.08 0.07 0.07 0.080.070.07 0.09 0.07 0.09 0.08 1010 0.07 0.09 0.077 0.07510/16/20060.07 0.07 0.07 0.070.0850.07 0.08 0.07 0.07 0.07 1010 0.07 0.085 0.0725 0.0710/23/20060.05 0.05 0.05 0.050.050.05 0.04 0.05 0.05 0.05 1010 0.04 0.05 0.049 0.05Average0.056 0.051 0.0540.052 0.0640.0540.058 0.056 0.052 0.052Median0.05 0.05 0.05 0.05 0.06 0.05 0.05 0.05 0.05 0.05Min0.03 0.02 0.03 0.02 0.025 0.02 0.03 0.02 0.03 0.03Max0.09 0.09 0.08 0.08 0.16 0.12 0.14 0.14 0.09 0.08Samples17 17 17 17 17 17 17 17 17 17Detects17 17 17 17 17 17 17 17 17 17Notes:U: Analyte not detected. Value is one half the reporting detection limit.J: Estimated valueND: Not detectedDuplicates averaged using one half the reporting detection limit. If parent and duplicate qualifiers are different from each other, both are shown with an "&" separating them.LGP-01-S LGP-01-MDLGP-09-S (Avgwith Dup) LGP-09-MD LGP-06-S LGP-06-MDLGP-13-S LGP-13-MD LGP-11-S LGP-11-MDSummary of Downstream SamplesSR-REF-S SR-REF-MD CR-REF-SSummary of Upstream SamplesDetects Samples Minimum Maximum Average MedianTable 12Orthophosphate Phosphorus Results (mg/L) from Weekly Receiving Water Monitoring StudyTier 1 Endangered Species Act Monitoring and NPDES Permit Compliance MonitoringStudies Conducted in 2006Potlatch Mill, Lewiston, IDSampling Date07/05/20060.02 0.02 0.005 J 3 3 0.005 0.02 0.02 0.0207/11/20060.02 0.02 0.005 U 2 3 0.005 0.02 0.02 0.0207/18/20060.02 X 0.02 X 0.005 UX 2 3 0.005 0.02 0.02 0.0207/25/20060.03 X 0.04 X 0.005 JX 3 3 0.005 0.04 0.03 0.0307/31/20060.06 X 0.07 X 0.005 UX 2 3 0.005 0.07 0.05 0.0608/08/20060.03 0.03 0.005 U 2 3 0.005 0.03 0.02 0.0308/15/20060.04 0.04 0.003 J 3 3 0.003 0.04 0.03 0.0408/21/20060.05 X 0.05 X 0.01 X 3 3 0.01 0.05 0.04 0.0508/30/20060.05 X 0.05 0.005 U 2 3 0.005 0.05 0.04 0.0509/05/20060.06 X 0.05 X 0.005 UX 2 3 0.005 0.06 0.04 0.0509/12/20060.06 X 0.06 X 0.005 U 2 3 0.005 0.06 0.04 0.0609/19/20060.06 X 0.06 X 0.009 JX 3 3 0.009 0.06 0.04 0.0609/26/20060.06 X 0.05 X 0.005 UX 2 3 0.005 0.06 0.04 0.0510/03/20060.07 0.07 0.006 J 3 3 0.006 0.07 0.05 0.0710/09/20060.06 0.06 0.005 U 2 3 0.005 0.06 0.04 0.0610/16/20060.06 0.06 0.005 U 2 3 0.005 0.06 0.04 0.0610/23/20060.04 0.04 0.005 U 2 3 0.005 0.04 0.03 0.04Average0.046 0.046 0.005Median0.05 0.05 0.005Min0.02 0.02 0.003Max0.07 0.07 0.01Samples17 17 17Detects17 17 6Sampling DateDetects Samples Minimum Maximum Average Median07/05/20060.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.02 0.02 1010 0.01 0.02 0.012 0.0107/11/20060.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.01 0.01 1010 0.01 0.02 0.018 0.0207/18/20060.02 0.02 0.02 X 0.02 X 0.02X0.02 X 0.02 0.02 0.01 0.02 1010 0.01 0.02 0.019 0.0207/25/20060.03 X 0.03 X 0.04 X 0.02 X 0.03X0.03 X 0.03 0.02 0.01 0.01 1010 0.01 0.04 0.025 0.0307/31/20060.03 X 0.03 X 0.03 X 0.02 X 0.02X0.02 X 0.05 0.04 0.01 0.02 1010 0.01 0.05 0.027 0.02508/08/20060.03 0.03 0.03 0.08 0.03 0.03 0.01 0.03 0.03 0.02 1010 0.01 0.08 0.032 0.0308/15/20060.04 0.04 0.04 0.03 0.04 0.03 0.04 0.03 0.02 0.02 1010 0.02 0.04 0.033 0.03508/21/20060.05 0.04 0.05 0.04 0.05 0.04 0.04 0.04 0.03 0.04 1010 0.03 0.05 0.042 0.0408/30/20060.06 0.05 0.05 0.05 0.06 0.05 0.05 0.04 0.03 0.03 1010 0.03 0.06 0.047 0.0509/05/20060.05 0.04 0.05 0.04 0.055X0.04 X 0.05 0.04 0.04 0.03 1010 0.03 0.055 0.0435 0.0409/12/20060.06 0.04 0.05 0.05 0.06 0.04 0.05 0.05 0.04 0.04 1010 0.04 0.06 0.048 0.0509/19/20060.06 X 0.06 X 0.06 X 0.06 X 0.065X0.06 X 0.06 X 0.06 X 0.06 X 0.05 X 1010 0.05 0.065 0.0595 0.0609/26/20060.06 0.06 0.06 0.06 0.07 0.06 0.06 0.06 0.06 0.07 1010 0.06 0.07 0.062 0.0610/03/20060.07 0.07 0.06 0.06 0.075 0.07 0.06 0.06 0.06 0.06 1010 0.06 0.075 0.0645 0.0610/09/20060.07 0.05 0.06 0.05 0.065 0.09 0.06 0.06 0.06 0.06 1010 0.05 0.09 0.0625 0.0610/16/20060.06 0.05 0.06 0.05 0.06 0.06 0.07 0.07 0.06 0.06 1010 0.05 0.07 0.06 0.0610/23/20060.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 1010 0.04 0.04 0.04 0.04Average0.045 0.040 0.043 0.041 0.045 0.042 0.042 0.041 0.035 0.035Median0.05 0.04 0.05 0.04 0.05 0.04 0.05 0.04 0.03 0.03Min0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01Max0.07 0.07 0.06 0.08 0.075 0.09 0.07 0.07 0.06 0.07Samples17 17 17 17 17 17 17 17 17 17Detects17 17 17 17 17 17 17 17 17 17Notes:U: Analyte not detected. Value is one half the reporting detection limit.J: Estimated valueX: Holding time exceededND: Not detectedDuplicates averaged using one half the reporting detection limit. If parent and duplicate qualifiers are different from each other, both are shown with an "&" separating them.LGP-01-S LGP-01-MDLGP-09-S (Avgwith Dup) LGP-09-MD LGP-06-S LGP-06-MDLGP-13-S LGP-13-MD LGP-11-SLGP-11-MDSummary of Downstream SamplesSR-REF-S SR-REF-MD CR-REF-SSummary of Upstream SamplesDetects Samples Minimum Maximum Average MedianTable 132,3,7,8-TCDD (pg/L) Results from Weekly Receiving Water Monitoring StudyTier 1 Endangered Species Act Monitoring and NPDES Permit Compliance MonitoringStudies Conducted in 2006Potlatch Mill, Lewiston, IDSampling DateSample07/05/20060.393 U 0.3415 U * 0 2 ND ND ND ND07/11/2006* 1.17 U 0.815 U 0 2 ND ND ND ND7/18/060.3075 U 0.635 U 0.715 U 0 3 ND ND ND ND7/25/060.403 U 0.4345 U 0.4675 U 0 3 ND ND ND ND7/31/061.005 U 1.025 U 0.745 U 0 3 ND ND ND ND8/8/060.69 U 0.485 U 0.65 U 0 3 ND ND ND ND8/15/061.24 U 1.075 U 1.41 U 0 3 ND ND ND ND8/21/060.81 U 0.74 U 0.645 U 0 3 ND ND ND ND8/30/060.585 U 0.82 U 0.985 U 0 3 ND ND ND ND9/5/060.272 U 0.296 U 0.2 U 0 3 ND ND ND ND9/12/060.3805 U 0.725 U 0.441 U 0 3 ND ND ND ND9/19/060.67 U 0.4345 U 0.439 U 0 3 ND ND ND ND9/26/060.57 U 0.565 U 0.3635 U 0 3 ND ND ND ND10/3/060.474 U 0.53 U 0.56 U 0 3 ND ND ND ND10/9/060.72 U 0.835 U 0.82 U 0 3 ND ND ND ND10/16/060.3875 U 0.486 U 0.98 U 0 3 ND ND ND ND10/23/060.88 U 0.905 U 0.975 U 0 3 ND ND ND NDAverage0.612 0.677 0.701Median0.57750.635 0.6825Min0.272 0.296 0.2Max1.24 1.17 1.41Samples16 17 16Detects000Sampling DateDetects Samples Minimum Maximum Average Median7/5/060.305 U 0.3855 U 0.635 U 0.355 U 0.805 U 1.265 U 0.331 U 0.469 U 0.52 U * 09 ND ND ND ND7/11/061.045 U * 0.665 U 0.845 U 0.725 U 0.79 U 0.87 U * 1.245 U 1.07 U 08 ND ND ND ND7/18/060.427 U 0.3465 U 0.427 U 0.535 U 0.512 U 0.335 U 0.367 U 0.378 U 0.341 U 0.2415 U 010 ND ND ND ND7/25/060.349 U 0.87 U 0.349 U 0.3975 U 0.515U&*0.442 U 1.615 U 1.1 U 0.975 U 0.515 U 010 ND ND ND ND7/31/06* 0.4995 U 0.4795 U 0.387 U 0.54325 U 0.705 U 0.515 U 0.555 U 0.409 U 0.478 U 09 ND ND ND ND8/8/060.785 U 0.7 U 0.9 U 0.73 U 0.815 U 0.65 U 0.895 U 0.476 U 0.675 U 0.64 U 010 ND ND ND ND8/15/062.025 U 1.08 U 1.46 U 0.855 U 1.685 U 1.16 U 1.465 U 1.49 U 1.685 U 1.865 U 010 ND ND ND ND8/21/060.79 U 0.525 U 0.515 U 1.66 U 0.59425 U 0.59 U 0.48 U 0.765 U 0.585 U 0.96 U 010 ND ND ND ND8/30/061.16 U 0.655 U 0.905 U 0.66 U 0.6525 U 0.765 U 1.065 U 0.7 U 0.605 U 0.73 U 010 ND ND ND ND9/5/060.204 U 0.1745 U 0.123 U 0.2775 U 0.31775 U 0.231 U 0.181 U 0.274 U 0.297 U 0.2795 U 010 ND ND ND ND9/12/060.53 U 0.2315 U 0.4485 U 0.407 U 0.3955 U 0.225 U 0.289 U 0.236 U 0.285 U 0.238 U 010 ND ND ND ND9/19/060.49 U 0.59 U 0.289 U 0.435 U 1.3125 U 1.3 U 0.845 U 1.09 U 0.489 U 0.4515 U 010 ND ND ND ND9/26/060.456 U 0.4435 U 0.71 U 0.3965 U 0.3115 U 0.408 U 0.363 U 0.335 U 0.445 U 0.272 U 010 ND ND ND ND10/3/060.56 U 1.145 U 0.434 U 0.74 U 0.5875 U 0.411 U 0.565 U 0.775 U 0.645 U 0.885 U 010 ND ND ND ND10/9/060.55 U 0.655 U 0.87 U 0.55 U 1.64 U 1.15 U 1.015 U 0.452 U 0.493 U 1.5 U 010 ND ND ND ND10/16/060.433 U 0.3805 U 0.3715 U 0.55 U 0.344U&*0.372 U 0.258 U 0.52 U 0.565 U 0.54 U 010 ND ND ND ND10/23/060.99 U 0.77 U 1.17 U 1.42 U 0.835U&*0.875 U 1.275 U 1.27 U 0.72 U 1.005 U 010 ND ND ND NDAverage0.6940.591 0.632 0.659 0.741 0.687 0.729 0.680 0.646 0.729Median0.54 0.55750.515 0.55 0.594250.65 0.565 0.538 0.565 0.59Min0.2040.17450.123 0.27750.31150.225 0.181 0.236 0.285 0.238Max2.025 1.145 1.46 1.66 1.685 1.3 1.615 1.49 1.685 1.865Samples16 16 17 17 17 17 17 16 17 16Detects0 0 0 0 0 0 0 0 00Notes:U: Analyte not detected. Value is one half the reporting detection limit.J: Estimated valueND: Not detected*: Result not available; either sample not received by analytical laboratory or received broken.Duplicates averaged using one half the reporting detection limit. If parent and duplicate qualifiers are different from each other, both are shown with an "&" separating them.Summary of Upstream SamplesDetects Minimum Maximum Average MedianLGP-09-S(Avg. withLGP-01-SLGP-01-MDSummary of Downstream SamplesSR-REF-S SR-REF-MD CR-REF-SLGP-09-MD LGP-06-SLGP-06-MDLGP-13-S LGP-13-MD LGP-11-S LGP-11-MDTable 142,3,7,8-TCDF (pg/L) Results from Weekly Receiving Water Monitoring StudyTier 1 Endangered Species Act Monitoring and NPDES Permit Compliance MonitoringStudies Conducted in 2006Potlatch Mill, Lewiston, IDSampling Date07/05/20060.2815 U 0.4095 U * 0 2 ND ND ND ND07/11/2006* 0.9 U 0.695 U 0 2 ND ND ND ND07/18/20060.505 U 0.4125 U 0.474 U 0 3 ND ND ND ND07/25/20060.246 U 0.4975 U 0.359 U 0 3 ND ND ND ND07/31/20060.655 U 0.63 U 0.715 U 0 3 ND ND ND ND08/08/20060.64 U 0.615 U 0.485 U 0 3 ND ND ND ND08/15/20061.47 U 1.48 U 1.14 U 0 3 ND ND ND ND08/21/20060.41 U 0.443 U 0.27 U 0 3 ND ND ND ND08/30/20060.494 U 0.575 U 0.65 U 0 3 ND ND ND ND09/05/20060.419 U 0.173 U 0.1875 U 0 3 ND ND ND ND09/12/20060.3675 U 0.368 U 0.465 U 0 3 ND ND ND ND09/19/20060.4665 U 0.49 U 0.87 U 0 3 ND ND ND ND09/26/20060.3635 U 0.3975 U 0.3405 U 0 3 ND ND ND ND10/03/20060.575 U 0.4775 U 0.56 U 0 3 ND ND ND ND10/09/20060.59 U 0.321 U 1.135 U 0 3 ND ND ND ND10/16/20060.383 U 1.005 U 0.39 U 0 3 ND ND ND ND10/23/20060.6 U 0.72 U 0.565 U 0 3 ND ND ND NDAverage0.529 0.583 0.581Median 0.48025 0.49 0.5225Min 0.246 0.173 0.1875Max 1.47 1.48 1.14Samples 16 17 16Detects 0 0 0Sampling DateDetects Samples Minimum Maximum Average Median07/05/20060.2125 U 0.364 U 0.444 U 0.3925 U 0.579U1.025 U 0.424 U 0.57 U 0.243 U *0 9 ND ND ND ND07/11/20060.8 U * 0.87 U 0.875 U 0.45025U0.605 U 0.575 U * 0.615 U 0.645 U0 8 ND ND ND ND07/18/20060.4045 U 0.4435 U 0.3795 U 0.364 U 0.43325U0.42 U 0.53 U 0.525 U 0.387 U 0.311 U0 10 ND ND ND ND07/25/20060.4115 U 0.492 U 0.2295 U 0.303 U 0.453U&*0.438 U 1.45 U 0.645 U 0.585 U 0.77 U0 10 ND ND ND ND07/31/2006* 0.3315 U 0.705 U 0.435 U 0.3665U0.585 U 0.59 U 0.451 U 0.498 U 0.555 U0 9 ND ND ND ND08/08/20060.905 U 1.13 U 0.63 U 0.56 U 0.8025U0.585 U 0.89 U 0.68 U 0.97 U 0.73 U0 10 ND ND ND ND08/15/20061.345 U 1.35 U 1.795 U 0.99 U 1.58U1.065 U 0.94 U 1.19 U 1.115 U 1.44 U0 10 ND ND ND ND08/21/20060.4555 U 0.7 U 0.57 U 0.53 U 0.555U1.2 U 0.66 U 0.81 U 1.01 U 1.07 U0 10 ND ND ND ND08/30/20060.455 U 0.885 U 1.095 U 0.91 U 0.65U0.835 U 0.427 U 0.55 U 0.695 U 0.525 U0 10 ND ND ND ND09/05/20060.2805 U 0.284 U 0.3995 U 0.27 U 0.302U0.299 U 0.28 U 0.32 U 0.44 U 0.425 U0 10 ND ND ND ND09/12/20060.396 U 0.223 U 0.515 U 0.243 U 0.3085U0.268 U 0.223 U 0.28 U 0.356 U 0.206 U0 10 ND ND ND ND09/19/20060.368 U 0.4765 U 0.3695 U 0.4025 U 0.76525U1.01 U 0.575 U 0.61 U 0.605 U 1.51 U0 10 ND ND ND ND09/26/20060.3465 U 0.2855 U 0.291 U 0.327 U 0.39175U0.436 U 0.373 U 0.26 U 0.407 U 0.332 U0 10 ND ND ND ND10/03/20060.4235 U 0.53 U 0.66 U 0.805 U 0.51U1.445 U 0.455 U 0.515 U 0.56 U 0.56 U0 10 ND ND ND ND10/09/20060.4075 U 0.3885 U 0.83 U 0.575 U 1.0925U0.94 U 0.96 U 0.63 U 0.875 U 0.945 U0 10 ND ND ND ND10/16/20060.418 U 0.565 U 0.378 U 0.3125 U 0.925U&*0.203 U 0.26 U 0.285 U 0.459 U 0.56 U0 10 ND ND ND ND10/23/20061.075 U 0.695 U 0.815 U 0.855 U 0.735U&*1.15 U 1.175 U 0.93 U 0.925 U 0.645 U0 10 ND ND ND NDAverage0.544 0.571 0.646 0.538 0.641 0.736 0.634 0.578 0.632 0.702Median 0.41475 0.48425 0.57 0.435 0.555 0.605 0.575 0.56 0.585 0.603Min 0.2125 0.223 0.2295 0.243 0.302 0.203 0.223 0.26 0.243 0.206Max 1.345 1.35 1.795 0.99 1.58 1.445 1.45 1.19 1.115 1.51Samples 16 16 17 17 17 17 17 16 17 16Detects 0 0 0 0 3 0 0 0 0 0Notes:U: Analyte not detected. Value is one half the reporting detection limit.J: Estimated valueND: Not detected*: Result not available; either sample not received by analytical laboratory or received broken.Duplicates averaged using one half the reporting detection limit. If parent and duplicate qualifiers are different from each other, both are shown with an "&" separating them.LGP-01-MDLGP-09-MD LGP-06-SLGP-06-MDLGP-13-S LGP-13-MD LGP-11-SLGP-11-MDSummary of Downstream SamplesSR-REF-S SR-REF-MD CR-REF-SLGP-09-S(Avg. withSummary of Upstream SamplesDetects Sample Minimum Maximum Average MedianLGP-01-STable 15Results from the Quarterly Surface Water and Effluent Monitoring StudyNovember 2005Tier 1 Endangered Species Act Monitoring and NPDES Permit Compliance MonitoringStudies Conducted in 2006Potlatch Mill, Lewiston, IDLocationSample IDFrequency ofDetectsMinimum Maximum Average MedianAnalyte Sample DateResin Acids12,14-Dichlorodehydroabietic Acids ug/L 0.00025 U 0.00015 U 0.00025 U 0.00025 U 0.00025 U 0.00025 U 0.00025 U 0.00025 U 0 / 6 ND ND ND ND 0.0005 U 0.00085 U 0.01 UAbietic Acid ug/L 0.019 U 0.01115 U 0.0265 U 0.0155 U 0.101 U 0.041 U 0.041 U 0.02375 U 0 / 6 ND ND ND ND 1.43 20.9 227.17Dehydroabietic Acid ug/L 0.0215 U 0.0095 U 0.027 U 0.01 U 0.0285 U 0.0145 U 0.012 U 0.010875 U 0 / 6 ND ND ND ND 0.0935 U 1.27 13.80Isopimaric Acid ug/L 0.003 U 0.0015 U 0.0045 U 0.0015 U 0.011 U 0.006 U 0.007 U 0.002875 U 0 / 6 ND ND ND ND 0.424 6.25 67.93Neoabietic Acid ug/L 0.00025 U 0.00035 U 0.0004 U 0.00025 U 0.004 J 0.001 J 0.0005 U 0.00035 U 2 / 6 0.00025 0.004 0.0011 0.0005 0.028 J 0.47 5.11Palustric Acid ug/L 0.0007 U 0.0006 U 0.001 U 0.0005 U 0.005 U 0.001 U 0.001 U 0.000625 U 0 / 6 ND ND ND ND 0.0165 U 0.349 U 3.79 UPimaric Acid ug/L 0.002 U 0.0015 U 0.0025 U 0.0015 U 0.0035 U 0.0035 U 0.005 U 0.00275 U 0 / 6 ND ND ND ND 0.25 4.52 49.13Sandaracopimaric Acid ug/L 0.0015 U 0.00055 U 0.0015 U 0.0005 U 0.0025 U 0.0025 U 0.001 U 0.0005 U 0 / 6 ND ND ND ND 0.043 J 0.264 2.87Total 12/14-Chlorodehydroabietic Acid ug/L 0.00025 U 0.00025 U 0.00025 U 0.00025 U 0.003 J 0.00025 U 0.00025 U 0.00025 U 1 / 6 0.00025 0.003 0.0007 0.0003 0.05 J 0.127 1.38ChloroformChloroform ug/L 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0 / 6 ND ND ND ND NA 1.4 15.22Phytosterols/Retenebeta-Sitosterol ug/L 0.396 J 0.453 J 0.408 J 0.402 J 0.7 J 0.513 J 0.766 0.949 6 / 6 0.402 0.949 0.6230 0.6065 78.8 163 1771.74Campesterol ug/L 0.024 J 0.056 J 0.028 J 0.042 J 0.072 J 0.049 J 0.064 J 0.0805 J 6 / 6 0.028 0.0805 0.0559 0.0565 4.75 11.1 120.65Stigmastanol ug/L 0.007 U 0.006 U 0.00605 U 0.006 U 0.0113 U 0.026 J 0.049 J 0.0695 J 3 / 6 0.006 0.0695 0.0280 0.0187 10.3 22 239.13Stigmasterol ug/L 0.032 J 0.047 J 0.038 J 0.042 J 0.059 J 0.044 J 0.059 J 0.0575 J 6 / 6 0.038 0.059 0.0499 0.0508 3.13 10 108.70Retene ug/L 0.0015 U 0.0015 U 0.0015 U 0.0015 U 0.0015 U 0.0015 U 0.0015 U 0.0015 U 0 / 6 ND ND ND ND 0.012 J 0.018 J 0.20 JPhysical ParametersCarbon, Dissolved Organic (DOC) mg/L 2.1 2.2 2.2 2.2 2.1 2.2 2.4 2.5 6 / 6 2.1 2.5 2.3 2.2 NA 107Carbon, Total Organic (TOC) mg/L 2 2.2 2.3 2.3 2.2 2.2 2.5 2.5 6 / 6 2.2 2.5 2.3 2.3 NA 141Solids, Total Suspended (TSS) mg/L 2.5 U 6 X 2.5 UX 9 X 7 5 8 6.5 6 / 6 2.5 9 6.3 6.75 NA 92Notes:U: Analyte not detected. Value is one half the reporting detection limit.J: Estimated value.X: Holding time exceeded.Data was validated. Qualifiers presented represent validated results. Highlighted qualifiers are those that changed during validation.CR-REFCR REF C SWA11/18/05SR-REFSR REF B SWA11/13/05LGP-14LGP-01 (Avg.with Dup)LGP 09 SWALGP 11 SWAEffluentLGP-06LGP 13 SWALGP-11LGP-13 LGP-09LGP 14 SWAEFF A -dissolved11/16/0511/16/0511/18/0511/14/0511/14/05LGP 06 SWADuplicates averaged using one half the reporting detection limit. If parent and duplicate qualifiers are different from each other, both are shown with an "&" separating them.EffluentEFF A - part.(ug/g)11/15/05Summary Statistics for Downstream LocationsEffluent11/15/0511/17/05EFFA -particulate11/15/05Table 16Results from the Quarterly Surface Water and Effluent Monitoring StudyMarch 2006Tier 1 Endangered Species Act Monitoring and NPDES Permit Compliance MonitoringStudies Conducted in 2006Potlach Mill, Lewiston, IDLocationSample IDMinimum Maximum Average MedianAnalyte Sample DateResin Acidsug/gPimaric Acid ug/L 0.0015 U 0.0015 U 0.0035 U 0.001 U 0.002 U 0.0035 U 0.00225 U 0 / 5 ND ND ND ND 1.17 14.3Sandaracopimaric Acid ug/L 0.001 U 0.0005 U 0.001 U 0.0005 U 0.001 U 0.001 U 0.0005 U 0 / 5 ND ND ND ND 0.134 J 1.63 JIsopimaric Acid ug/L 0.0015 U 0.0015 U 0.0025 U 0.0015 U 0.004 U 0.006 U 0.003 U 0 / 5 ND ND ND ND 1.71 20.9Palustric Acid ug/L 0.00035 U 0.00035 U 0.00035 U 0.00045 U 0.001 U 0.0005 U 0.0005 U 0 / 5 ND ND ND ND 0.2775 U 3.4 UDehydroabietic Acid ug/L 0.0205 U 0.0175 U 0.0525 U 0.0135 U 0.0275 U 0.0365 U 0.0235 U 0 / 5 ND ND ND ND 1.05 12.8Abietic Acid ug/L 0.107 J 0.0095 U 0.02 U 0.013 J 0.039 J 0.086 J 0.0265 J 4 / 5 0.013 0.086 0.0369 0.0265 14.5 177Neoabietic Acid ug/L 0.001 J 0.00025 U 0.00025 U 0.00025 U 0.001 J 0.00025 U 0.00025 U 1 / 5 0.00025 0.001 0.0004 0.0003 0.248 3.02Total 12/14-Chlorodehydroabietic Acid ug/L 0.00025 U 0.00025 U 0.00025 U 0.00025 U 0.00025 U 0.00025 U 0.00025 U 0 / 5 ND ND ND ND 0.186 2.2712,14-Dichlorodehydroabietic Acids ug/L 0.00025 U 0.00025 U 0.00025 U 0.00025 U 0.00025 U 0.00025 U 0.00025 U 0 / 5 ND ND ND ND 0.0005 U 0.006 UChloroformChloroform ug/L 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0 / 5 ND ND ND ND 1 12.195Phytosterols/ReteneCampesterol ug/L 0.04 J 0.094 J 0.103 J 0.113 J 0.121 J 0.111 J 0.1025 J 5 / 5 0.101 0.121 0.1101 0.1110 14.6 178Stigmasterol ug/L 0.053 J 0.075 J 0.085 J 0.091 J 0.118 J 0.089 J 0.089 J 5 / 5 0.078 0.118 0.0944 0.0890 14.3 174beta-Sitosterol ug/L 0.735 1.91 1.66 1.73 2 2.02 2.485 5 / 5 1.66 2.485 1.9790 2.0 199 2427Stigmastanol ug/L 0.01015 U 0.00955 U 0.034 J 0.041 J 0.047 J 0.056 J 0.01205 U 4 / 5 0.0081 0.056 0.0380 0.04 26.8 327Retene ug/L 0.0002 U 0.0002 U 0.00015 U 0.001 J 0.002 J 0.001 J 0.001 J 4 / 5 0.00015 0.002 0.0010 0.0010 0.012 J 0.146 JPhysical ParametersCarbon, Dissolved Organic (DOC) mg/L 2.6 2.8 2.8 2.7 2.9 2.8 3.05 5 / 5 2.7 3.05 2.8500 2.8 124Carbon, Total Organic (TOC) mg/L 2.6 2.9 2.9 3.1 3.1 3 2.9 5 / 5 2.7 3.1 3.0000 3.0 125Solids, Total Suspended (TSS) mg/L 2.5 U 6 6 8 10 9 3.75 U& 5 / 5 2.5 10 7.3500 8.0 82Notes:U: Analyte not detected. Value is one half the reporting detection limit.J: Estimated value.* Maximum possible value; separate analysis of filtered portion to determine dissolved phase could not be conductedData was validated. Qualifiers presented represent validated results. Highlighted qualifiers are those that changed during validation.EffluentLGP2-EFF-AQ-A3/17/06LGP-01 (Avg.with Dup)3/15/06LGP-09 LGP-06LGP2-03-SW-A LGP2-02-SW-AEffluent Solids*(ug/g)LGP2-EFF-AQ-A3/17/06Frequency ofDetectsSummary Statistics for Downstream Locations3/14/06CR-REF SR-REF LGP-13-14 LGP-11CR-REF-SW-A SR-REF-SW-A031306 LGP2-05-SW-ADuplicates averaged using one half the reporting detection limit. If parent and duplicate qualifiers are different from each other, both are shown with an "&" separating them.LGP2-04-SW-A3/18/06 3/13/06 3/16/06 3/16/06 3/15/06Table 17Results from the Quarterly Surface Water and Effluent Monitoring StudyJune 2006Tier 1 Endangered Species Act Monitoring and NPDES Permit Compliance MonitoringStudies Conducted in 2006Potlatch Mill, Lewiston, IDMinimum Maximum Average MedianResin AcidsPimaric Acid ug/L 0.0015 U 0.004 U 0.004 U 0.0035 U 0.005 U 0.0045 U 0.008 U&J 1 / 5 0.0035 0.008 0.0050 0.0045 0.43 0.164 J 3.69 JSandaracopimaric Acid ug/L 0.002 U 0.0015 U 0.0015 U 0.00075 U 0.002 U 0.002 U 0.00175 U 0 / 5 ND ND ND ND 0.028 J 0.019 J 0.13 JIsopimaric Acid ug/L 0.012 J 0.013 J 0.014 J 0.013 J 0.022 J 0.018 J 0.0145 J 5 / 5 0.013 0.022 0.0163 0.0145 0.464 0.1155 U 4.84Palustric Acid ug/L 0.0035 UJ 0.0015 UJ 0.002 UJ 0.003 J 0.0055 UJ 0.003 UJ 0.00075 UJ&U 5 / 5 0.0005 0.0055 0.0029 0.0020 0.0415 UJ 0.017 UJ 0.58 UDehydroabietic Acid ug/L 0.0185 U 0.051 U 0.0415 U 0.0355 U 0.0495 U 0.041 U 0.0725 U&J 1 / 5 0.029 0.0725 0.0480 0.0415 0.279 0.232 J 0.65 JAbietic Acid ug/L 0.147 0.079 J 0.073 J 0.077 J 0.145 0.136 0.0625 J 5 / 5 0.06 0.145 0.0987 0.0730 2.03 2.15 28.19Neoabietic Acid ug/L 0.003 J 0.001 J 0.001 J 0.002 J 0.003 J 0.002 J 0.000625 J&U 5 / 5 0.00025 0.003 0.0017 0.0010 0.047 J 0.014 J 0.46 J12,14-Dichlorodehydroabietic Acids ug/L 0.00025 U 0.0003 U 0.00025 U 0.00025 U 0.00025 U 0.00025 U 0.00025 U 0 / 5 ND ND ND ND 0.00295 U 0.0008 U 0.04 UTotal 12/14-Chlorodehydroabietic Acid ug/L 0.00025 U 0.00025 U 0.00025 U 0.00025 U 0.00025 U 0.00025 U 0.00025 U 0 / 5 ND ND ND ND 0.061 J 0.048 J 0.18 JChloroformChloroform ug/L 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0 / 5 ND ND ND ND 1.3 18.06Phytosterols/Retenebeta-Sitosterol ug/L 0.715 U 0.975 U 1.485 U 1.04 U 0.79 U 1.07 U 1.1875 U 0 / 5 ND ND ND ND 164 J 79.7 J 1171Campesterol ug/L 0.026 J 0.062 J 0.08 J 0.063 J 0.05 J 0.073 J 0.0685 J 5 / 5 0.05 0.08 0.0669 0.0685 9.9 J 3.72 J 86Stigmastanol ug/L 0.01525 U 0.0145 U 0.0172 U 0.01285 U 0.0134 U 0.01555 U 0.0137 U 0 / 5 ND ND ND ND 19.3 J 9.47 J 137Stigmasterol ug/L 0.099 J 0.129 J 0.177 J 0.126 J 0.105 J 0.105 J 0.1445 J 5 / 5 0.105 0.177 0.1315 0.1260 12.5 J 3.48 J 125Retene ug/L 0.0006 U 0.003 J 0.001 U 0.00095 U 0.0007 U 0.114 0.002 J 2 / 5 0.0007 0.114 0.0237 0.0020 0.015 J 0.008 J 0.10Physical ParametersCarbon, Dissolved Organic (DOC) mg/L 2.4 2.4 2.5 2.5 2.6 2.5 2.5 5 / 5 2.5 2.6 2.5 2.5 90.1Carbon, Total Organic (TOC) mg/L 2.9 2.7 2.5 2.6 2.8 2.7 2.65 5 / 5 2.5 2.8 2.7 2.7 129Solids, Total Suspended (TSS) mg/L 2.5 U 25 30 22 22 35 10.5 5 / 5 10 35 23.9 22.0 72 68Notes:J: Estimated value.LGP-13-14 LGP-11 LGP-09 LGP-06Effluent - dissolvedLGP2-EFF-AQD0609066/9/066/9/06LGP-01 (Avg. withDup)Effluent - totalLGP2-EFF-AQA060906Summary Statistics for Downstream LocationsFrequency ofDetectsEffluent Solids(ug/g) Calculated6/7/06 6/5/06LGP2-03-SWA060706LGP2-02-SW-A0605066/9/06Duplicates averaged using one half the reporting detection limit. If parent and duplicate qualifiers are different from each other, both are shown with an "&" separating them.6/10/06 6/8/06 6/8/06 6/7/06Data was validated. Qualifiers presented represent validated results. Highlighted qualifiers are those that changed during validation.Analyte Sample DateSample IDLocationU: Analyte not detected. Value is one half the reporting detection limit.6/6/06CR-REF-SWA061006SR-REF-SW-A060806LGP2-05-SW-A060806LGP2-04-SW-A060706CR-REF SR-REFTable 18Results from the Quarterly Surface Water and Effluent Monitoring StudySeptember 2006Tier 1 Endangered Species Act Monitoring and NPDES Permit Compliance MonitoringStudies Conducted in 2006Potlatch Mill, Lewiston, IDLocationSample IDFrequency ofDetectsMinimum Maximum Average MedianAnalyte Sample DateResid Acids12,14-Dichlorodehydroabietic Acids ug/L 10 U 10 UJ 10 UJ&UJ 10 UJ 10 U 10 U 10 U 0 / 5 ND ND ND ND 10 UJ 10 UJ 213 UJ 213 UJAbietic Acid ug/L 10 U 10 UJ 10 UJ&UJ 10 UJ 10 U 10 U 10 U 0 / 5 ND ND ND ND 10 UJ 10 UJ 213 UJ 213 UJDehydroabietic Acid ug/L 10 U 10 UJ 10 UJ&UJ 10 UJ 10 U 10 U 10 U 0 / 5 ND ND ND ND 10 UJ 10 UJ 213 UJ 213 UJIsopimaric Acid ug/L 10 U 10 UJ 10 UJ&UJ 10 UJ 10 U 10 U 10 U 0 / 5 ND ND ND ND 10 UJ 10 UJ 213 UJ 213 UJPimaric Acid ug/L 10 U 10 UJ 10 UJ&UJ 10 UJ 10 U 10 U 10 U 0 / 5 ND ND ND ND 10 UJ 10 UJ 213 UJ 213 UJ12-Chlorodehydroabietic Acid ug/L 10 U 10 UJ 10 UJ&UJ 10 UJ 10 U 10 U 10 U 0 / 5 ND ND ND ND 10 UJ 10 UJ 213 UJ 213 UJ14-Chlorodehydroabietic Acid ug/L 10 U 10 UJ 10 UJ&UJ 10 UJ 10 U 10 U 10 U 0 / 5 ND ND ND ND 10 UJ 10 UJ 213 UJ 213 UJTotal 12/14-Chlorodehydroabietic Acid** ug/L 20 U 20 UJ 20 UJ&UJ 20 UJ 20 U 20 U 20 U 0 / 5 ND ND ND ND 20 UJ 20 UJ 426 UJ 426 UJ9,10-Dichlorostearic Acidug/L 10 U 10 UJ 10 UJ&UJ 10 UJ 10 U 10 U 10 U 0 / 5 ND ND ND ND 10 UJ 10 UJ 213 UJ 213 UJLinoleic Acidug/L 10 U 10 UJ 10 UJ&UJ 10 UJ 10 U 10 U 10 U 0 / 5 ND ND ND ND 9.5 J 7.8 J 202 J 166 JOleic Acid/Linolenic Acidug/L 10 U 10 UJ 10 UJ&UJ 10 UJ 10 U 10 U 10 U 0 / 5 ND ND ND ND 25 23 532 489ChloroformChloroform ug/L 0.25 U 0.25 U 0.25 U&U 0.25 U 0.25 U 0.25 U 0.25 U 0 / 5 ND ND ND ND 1.1 23Phytosterols/Retenebeta-Sitosterol ug/L 0.2 J 0.19 J 0.165 J&J 0.26 J 0.39 J 0.49 J 0.57 J 5 / 5 0.165 0.57 0.3750 0.3900 19 J 23 J 404 J 489 JRetene ug/L 0.0069 J 0.024 U 0.024 U&U 0.024 U 0.0245 U 0.0245 U 0.025 U 0 / 5 ND ND ND ND 0.026 U 0.026 U 0.55 U 0.55 UPhysical ParamtersCarbon, Dissolved Organic (DOC) mg/L 1.8 2.7 2.8 & 2.8 2.6 2.6 2.5 5 / 5 2.5 2.8 2.6600 2.6000 121 121Carbon, Total Organic (TOC) mg/L 1.8 2.6 2.5 & 2.5 2.7 2.7 2.6 5 / 5 2.5 2.7 2.6000 2.6000 127 127Solids, Total Suspended (TSS) mg/L 2.5 U 6 2.5 U&U 2.5 U 2.5 U 2.5 U 6 1 / 5 2.5 6 3.2000 2.5000 47 47Notes:Data was validated. Qualifiers presented represent validated results.U: Analyte not detected. Value is one half the reporting detection limit.J indicates estimated valueDuplicates averaged using one half the reporting detection limit.* Both effluent samples represent total effluent - the lab did not filter the sample to get just the dissolved fraction. Mustcalculate and report each phase as maximum possible.** Calculated by summing 12-Chlorodehydroabietic Acid and 14-Chlorodehydroabietic Acid.Compounds depicted in red text were not analyzed during previous rounds because they were not included on the standard resin acid analyte list. Results reported here for informational purposes only.Effluent Solids*(maximumpossible) (ug/g)09/20/06 sampleEffluent Solids(maximumpossible) (ug/g)09/18/06 sampleLGP-11 LGP-09 LGP-069/18/06 9/20/069/20/06 9/20/06CR-REF SR-REFLGP-13-14 (Avg.with Dup)9/19/06Effluent - Total*9/21/06 9/18/069/22/069/19/06Effluent - Total*CR-REF-SW-A092106LGP-01-SW-A-092206LGP2-EFF-AQ-A-091806LGP2-EFF-AQ-D-092006*LGP-03-SW-A-092006LGP-02-SW-A-092006LGP2-04-SW-A-091906LGP-01SR-REF-SW-A091806Table 19Chlorophenol Results from the Quarterly Surface Water and Effluent Monitoring StudyNovember 2005Tier 1 Endangered Species Act Monitoring and NPDES Permit Compliance MonitoringStudies Conducted in 2005Potlatch Mill, Lewiston, IDLocationSample IDFrequencyof DetectsMinimum Maximum Average MedianAnalyte Sample Dateug/L2,3,4,6-Tetrachlorophenol 0.00025 U 0.00025 U 0.00025 U 0.00025 U 0.0007 UJ 0.00025 U 0.00025 U 0.00025 U 0 / 6 ND ND ND ND 0.005 U 0.00385 U 0.04 U2,4,5-Trichlorophenol 0.003 U 0.003 U 0.003 U 0.003 U 0.0005 U 0.003 U 0.003 U 0.003 U 0 / 6 ND ND ND ND 0.00125 UJ 0.002 U 0.02 U2,4,6-Trichlorophenol 0.00025 U 0.00025 U 0.00025 U 0.00035 U 0.0006 UJ 0.0005 U 0.0003 U 0.00025 U 0 / 6 ND ND ND ND 0.119 J 0.106 J 1.15 J3,4,5-Trichlorocatechol 0.0005 UJ 0.00025 U 0.0005 U 0.0005 U R 0.0005 U 0.00025 U 0.000375 UJ&U 0 / 5 ND ND ND ND 0.0215 U 0.02 U 0.22 UPentachlorophenol 0.0005 U 0.0005 U 0.0005 U 0.0005 U R 0.001 U 0.0005 U 0.00075 U 0 / 5 ND ND ND ND 0.0065 U 0.0043 U 0.05 U3,4,6-Trichlorocatechol 0.00025 U 0.00025 U 0.001 J 0.00025 U NA 0.0005 U 0.00025 U 0.000275 U 1 / 5 0.00025 0.001 0.0005 0.0003 0.0105 U 0.01 U 0.11 UTetrachlorocatechol 0.001 J 0.00035 U 0.0005 U 0.0003 U NA 0.0004 U 0.00035 U 0.0004 U 1 / 5 0.0003 0.0005 0.0004 0.0004 0.00795 U 0.01385 U 0.15 U3,4,5-Trichloroguaiacol 0.0005 U 0.0005 U 0.0005 U 0.0005 U NA 0.00025 U 0.0005 U 0.0005 U 0 / 5 ND ND ND ND 0.031 0.032 0.353,4,6-Trichloroguaiacol 0.00025 U 0.00025 U 0.00025 U 0.00025 U NA 0.00025 U 0.00025 U 0.00025 U 0 / 5 ND ND ND ND 0.0015 U 0.001 U 0.01 U4,5,6-Trichloroguaiacol 0.00025 U 0.0005 U 0.00025 U 0.0005 U NA 0.00025 U 0.0005 U 0.000375 U 0 / 5 ND ND ND ND 0.024 J 0.025 U 0.27 UTetrachloroguaiacol 0.0005 U 0.0005 U 0.00025 U 0.0005 U NA 0.00025 U 0.00025 U 0.00025 U 0 / 5 ND ND ND ND 0.0037 U 0.0038 U 0.04 UTrichlorosyringol 0.001 U 0.001 U 0.0005 U 0.0005 U NA 0.001 U 0.0005 U 0.001 U 0 / 5 ND ND ND ND 0.0065 U 0.003 U 0.03 UNotes:J: Estimated value.R: Rejected; no valid data for anayte.NA - Not analyzed. See validation report for explanation.Data was validated. Qualifiers presented represent validated results. Highlighted qualifiers are those that changed during validation.Effluent EFFA - part. (ug/g)11/15/05LGP-14CR-REFCR REF C SWA11/18/05SR-REFSR REF B SWA11/13/05EFF A -dissolvedEFF A -particulateLGP 06 SWALGP 09 SWALGP-01 (Avg. withDup)Effluent EffluentLGP-06LGP-13 LGP-11 LGP-0911/15/05 11/15/0511/17/0511/16/05U: Analyte not detected. Value is one half the reporting detection limit.Duplicates averaged using one half the reporting detection limit. If parent and duplicate qualifiers are different from each other, both are shown with an "&" separating them.Summary Statistics for Downstream Locations11/14/0511/14/05 11/16/0511/18/05LGP 11 SWALGP 13 SWALGP 14 SWATable 20Chlorophenol Results from the Quarterly Surface Water and Effluent Monitoring StudyMarch 2006Tier 1 Endangered Species Act Monitoring and NPDES Permit Compliance MonitoringStudies Conducted in 2006Potlatch Mill, Lewiston, IDLocationSample IDMinimum Maximum Average MedianAnalyteSample Date2,3,4,6-Tetrachlorophenol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.0025 U 0.03 U2,4,5-Trichlorophenol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.0025 U 0.03 U2,4,6-Trichlorophenol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.104 J 1.27 J3,4,5-Trichlorocatechol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.018 U 0.22 UPentachlorophenol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.0025 U 0.03 U3,4,6-Trichlorocatechol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.029 U 0.35 UTetrachlorocatechol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.0025 U 0.03 U3,4,5-Trichloroguaiacol ug/L 0.0035 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.042 J 0.51 J3,4,6-Trichloroguaiacol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.006 J 0.07 J4,5,6-Trichloroguaiacol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.0145 U 0.18 UTetrachloroguaiacol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.0025 U 0.03 UTrichlorosyringol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.011 U 0.13 UNotes:U: Analyte not detected. Value is one half the reporting detection limit.J: Estimated value.* Maximum Possible value; separate analysis of filtered portion to determine dissolved phase could not be conductedData was validated. Qualifiers presented represent validated results. Highlighted qualifiers are those that changed during validation.3/14/06EffluentLGP2-EFF-AQ-A3/17/06LGP-01 (Avg.with Dup)3/15/06 3/15/063/18/06 3/13/06 3/16/06 3/16/06CR-REF-SW-ASR-REF-SWA031306 LGP2-05-SW-A LGP2-04-SW-A LGP2-03-SW-A LGP2-02-SW-ALGP-09 LGP-06Duplicates averaged using one half the reporting detection limit. If parent and duplicate qualifiers are different from each other, both are shown with an "&" separating them.Frequencyof DetectsSummary Statistics for Downstream LocationsEffluent Solids*(ug/g)LGP2-EFF-AQ-A3/14/06CR-REF SR-REF LGP-13-14 LGP-11Table 21Chlorophenol Results from the Quarterly Surface Water and Effluent Monitoring StudyJune 2006Tier 1 Endangered Species Act Monitoring and NPDES Permit Compliance MonitoringStudies Conducted in 2006Potlatch Mill, Lewiston, IDMinimum Maximum Average Median2,3,4,6-Tetrachlorophenol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.0025 U 0.0025 U 0.03 U2,4,5-Trichlorophenol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.0125 U 0.004 U 0.17 U2,4,6-Trichlorophenol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.188 0.189 0.03 U3,4,5-Trichlorocatechol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.0455 U 0.035 U 0.63 UPentachlorophenol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.0075 U 0.0025 U 0.10 U3,4,6-Trichlorocatechol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.007 U 0.0065 U 0.10 UTetrachlorocatechol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.0055 U 0.008 U 0.08 U3,4,5-Trichloroguaiacol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.015 U 0.022 0.21 U3,4,6-Trichloroguaiacol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.0025 U 0.0035 U 0.03 U4,5,6-Trichloroguaiacol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.043 0.0325 U 0.60Tetrachloroguaiacol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.012 U 0.0035 U 0.17 UTrichlorosyringol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.0025 U 0.0025 U 0.03 UNotes:J: Estimated value.Data was validated. Qualifiers presented represent validated results. Highlighted qualifiers are those that changed during validation.LGP-01 (Avg.with Dup)6/6/06Effluent Solids(ug/g) Calculated6/9/06Effluent EffluentLGP2-EFF-AQA060906LGP2-EFF-AQ-D0609066/9/06 6/9/066/7/06 6/5/066/10/06 6/8/06 6/8/06 6/7/06CR-REF-SWA061006SR-REF-SW-A060806LGP2-05-SW-A060806LGP2-04-SW-A060706LGP2-03-SW-A060706LGP2-02-SW-A060506LGP-11 LGP-09 LGP-06Duplicates averaged using one half the reporting detection limit. If parent and duplicate qualifiers are different from each other, both are shown with an "&" separating them.Summary Statistics for Downstream LocationsFrequencyof DetectsU: Analyte not detected. Value is one half the reporting detection limit.LocationSample IDAnalyte Sample DateCR-REF SR-REF LGP-13-14Table 22Chlorophenol Results from the Quarterly Surface Water and Effluent Monitoring StudySeptember 2006Tier 1 Endangered Species Act Monitoring and NPDES Pemit Compliance MonitoringStudies Conducted in 2006Potlatch Mill, Lewiston, IDLocationSample IDFrequency ofDetectsMinimum Maximum Average MedianAnalyte Sample Date2,3,4,6-Tetrachlorophenol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.0025 U 0.0025 U 5.32E-02 U2,4,5-Trichlorophenol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.0025 U 0.0025 U 5.32E-02 U2,4,6-Trichlorophenol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.00057 J 0.0025 U 1 / 5 0.00057 0.0025 0.0021 0.0025 0.12 0.15 2.87E+003,4,5-Trichlorocatechol ug/L 0.005 U 0.005 U 0.005 U 0.005 U 0.005 U 0.005 U 0.005 U 0 / 5 ND ND ND ND 0.005 U 0.005 U 1.06E-01 UPentachlorophenol ug/L 0.005 U 0.005 U 0.005 U 0.005 U 0.005 U 0.005 U 0.005 U 0 / 5 ND ND ND ND 0.005 U 0.005 U 1.06E-01 U3,4,6-Trichlorocatechol ug/L 0.005 U 0.005 U 0.005 U 0.005 U 0.005 U 0.005 U 0.005 U 0 / 5 ND ND ND ND 0.017 J 0.008 U 2.66E-01Tetrachlorocatechol ug/L 0.005 U 0.005 U 0.005 U 0.005 U 0.005 U 0.005 U 0.005 U 0 / 5 ND ND ND ND 0.011 U 0.005 U 1.70E-01 U3,4,5-Trichloroguaiacol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.052 0.034 9.15E-013,4,6-Trichloroguaiacol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.02 0.016 3.83E-014,5,6-Trichloroguaiacol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.17 0.15 3.40E+00Tetrachloroguaiacol ug/L 0.005 U 0.005 U 0.005 U 0.005 U 0.005 U 0.005 U 0.005 U 0 / 5 ND ND ND ND 0.0075 U 0.005 U 1.33E-01 UTrichlorosyringol ug/L 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0 / 5 ND ND ND ND 0.0025 U 0.0025 U 5.32E-02 UNotes:U: Analyte not detected. Value is one half the reporting detection limit.J indicates estimated valueDuplicates averaged using one half the reporting detection limit.* Both effluent samples represent total effluent - the lab did not filter the sample to get just the dissolved fraction. Mustcalculate and report each phase as maximum possible.** -Calculated using average of effluent samples collected on different days.Effluent TotalMaximum possibledissolvedconcentrationLGP2-EFF-AQ-A0918069/18/06 9/20/06 9/20/06LGP2-EFF-AQ-D092006Effluent Solids**(ug/g)Maximum possibleConcentrationEffluent TotalMaximum possibledissolvedconcentrationSummary Statistics for Downstream Locations9/19/06 9/19/06 9/20/06 9/20/06LGP2-04-SW-A091906LGP-019/22/06LGP-01-SW-A092206CR-REF-SW-A-092106SR-REF-SW-A-091806Data was validated. Qualifiers presented represent validated results. Highlighted qualifiers are those that changed during validation.LGP-03-SW-A092006LGP-02-SW-A-092006CR-REF SR-REF9/21/06 9/18/06LGP-11LGP-13-14 (Avg.with Dup)LGP-09 LGP-06Table 23Dioxin and Furan Congener Results from the Quarterly Surface Water and Effluent Monitoring StudyNovember 2005Tier 1 Endangered Species Act Monitoring and NPDES Permit Compliance MonitoringStudies Conducted in 2006Potlatch MillLocationSample IDFrequencyof DetectsMinimum Maximum Average MedianAnalyte Sample Datepg/LDioxins2,3,7,8-TCDD 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0 / 6 ND ND ND ND 0.00125 U 0.005 J 0.0543 J1,2,3,7,8-PeCDD 0.00125 U 0.00125 U 0.003 J 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0.00125 U 1 / 6 0.00125 0.003 0.0015 0.0013 0.003 J 0.008 K J 0.0870 KJ1,2,3,4,7,8-HxCDD 0.003 J 0.0015 U 0.004 J 0.005 J 0.005 J 0.004 J 0.004 J 0.0045 J 5 / 6 0.004 0.005 0.0044 0.0043 0.003 J 0.014 J 0.1522 J1,2,3,6,7,8-HxCDD 0.005 J 0.007 J 0.016 J 0.014 J 0.013 J 0.009 J 0.009 J 0.0105 J 6 / 6 0.009 0.016 0.0116 0.0108 0.003 J 0.012 J 0.1304 J1,2,3,7,8,9-HxCDD 0.005 J 0.006 J 0.009 J 0.011 J 0.011 J 0.007 J 0.008 J 0.0095 J 6 / 6 0.007 0.011 0.0093 0.0093 0.004 J 0.015 J 0.1630 J1,2,3,4,6,7,8-HpCDD 0.113 0.136 0.345 0.278 0.21 0.19 0.164 0.215 J& 6 / 6 0.164 0.345 0.2290 0.2125 0.024 J 0.137 1.4891OCDD 0.942 1.08 1.97 1.78 1.03 1.3 1.23 1.74 J& 6 / 6 1.03 1.97 1.5663 1.6400 0.098 J 0.676 7.3478Furans2,3,7,8-TCDF 0.0025 U 0.006 J 0.00165 U 0.008 J 0.007 J 0.0035 U 0.0045 U 0.004 U&J 3 / 6 0.00165 0.008 0.0046 0.0043 0.024 0.067 0.72831,2,3,7,8-PeCDF 0.00125 U 0.00125 U 0.00125 U 0.003 J 0.003 J 0.00125 U 0.00125 U 0.00125 U 2 / 6 0.00125 0.003 0.0017 0.0013 0.006 J 0.019 J 0.2065 J2,3,4,7,8-PeCDF 0.00125 U 0.003 J 0.00125 U 0.004 J 0.004 J 0.003 J 0.0015 U 0.00225 J&U 4 / 6 0.00125 0.004 0.0026 0.0026 0.004 J 0.009 J 0.0978 J1,2,3,4,7,8-HxCDF 0.00125 U 0.004 J 0.003 J 0.011 J 0.01 J 0.006 J 0.004 J 0.006 J 6 / 6 0.003 0.011 0.0065 0.0060 0.00125 U 0.007 J 0.0761 J1,2,3,6,7,8-HxCDF 0.00125 U 0.003 J 0.003 J 0.004 J 0.004 J 0.003 J 0.003 J 0.004 J 6 / 6 0.003 0.004 0.0036 0.0040 0.00125 U 0.00125 U 0.0136 U1,2,3,7,8,9-HxCDF 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0 / 6 ND ND ND ND 0.00125 U 0.00125 U 0.0136 U2,3,4,6,7,8-HxCDF 0.00125 U 0.00125 U 0.00125 U 0.003 J 0.00125 U 0.00125 U 0.00125 U 0.00125 U 1 / 6 0.00125 0.003 0.0015 0.0013 0.00125 U 0.00125 U 0.0136 U1,2,3,4,6,7,8-HpCDF 0.018 J 0.026 J 0.032 J 0.041 J 0.033 J 0.028 J 0.031 J 0.0385 J 6 / 6 0.028 0.041 0.0351 0.0350 0.003 J 0.015 J 0.1630 J1,2,3,4,7,8,9-HpCDF 0.00125 U 0.004 J 0.003 J 0.004 J 0.003 J 0.003 J 0.003 J 0.004 J 6 / 6 0.003 0.004 0.0035 0.0035 0.00125 U 0.00125 U 0.0136 UOCDF 0.035 J 0.048 J 0.069 J 0.075 J 0.059 J 0.051 J 0.06 J 0.077 J 6 / 6 0.051 0.085 0.0681 0.0690 0.004 J 0.021 J 0.2283 JTotalsTotal TCDD 0.00125 U 0.01 0.042 0.019 0.02 0.017 0.018 0.019 6 / 6 0.017 0.042 0.0216 0.0190 0.08 0.289 3.1413Total PeCDD 0.003 0.006 0.022 0.042 0.049 0.012 0.00125 U 0.0085 5 / 6 0.00125 0.049 0.0190 0.0120 0.003 0.028 0.3043Total HxCDD 0.042 0.051 0.098 0.128 0.118 0.072 0.069 0.0855 6 / 6 0.069 0.128 0.0927 0.0918 0.023 0.114 1.2391Total HpCDD 0.225 0.266 0.696 0.544 0.417 0.385 0.329 0.4555 6 / 6 0.329 0.696 0.4672 0.4363 0.042 0.242 2.6304Total TCDF 0.029 0.056 0.051 0.085 0.075 0.056 0.059 0.0585 6 / 6 0.051 0.085 0.0627 0.0588 0.083 0.236 2.5652Total PeCDF 0.011 0.021 0.027 0.041 0.038 0.026 0.023 0.026 6 / 6 0.023 0.041 0.0291 0.0265 0.022 0.074 0.8043Total HxCDF 0.017 0.04 0.048 0.083 0.07 0.051 0.044 0.056 6 / 6 0.044 0.083 0.0580 0.0535 0.00125 U 0.025 0.2717Total HpCDF 0.036 0.055 0.088 0.089 0.07 0.062 0.071 0.09 6 / 6 0.062 0.093 0.0813 0.0875 0.006 0.032 0.34782.3.7.8-TCDD TEQ (WHO 1998) 0.0067 0.0088 0.0129 0.0138 0.0125 0.0099 0.0089 0.0105 6 / 6 0.0089 0.0138 0.0112 0.0108 0.0107 0.0319 0.3470Notes:J: Estimated value.All samples have units of pg/L, except effluent particulate sample, which has units of pg/g.TEQ calculated by summing the product of each individual congener and the corresponding toxic equivalency factor.Data was validated. Qualifiers presented represent validated results. Highlighted qualifiers are those that changed during validation.U: Analyte not detected. Value is one half the reporting detection limit.Duplicates averaged using one half the reporting detection limit. If parent and duplicate qualifiers are different from each other, both are shown with an "&" separating them.EffluentEFF A -particulate(pg/g)11/15/05EffluentEffluentEFF A -particulateLGP-14 LGP-13SR REF B SWA LGP 14 SWA LGP 13 SWACR-REFCR REF C SWA11/18/05SR-REF LGP-09 LGP-0611/16/0511/18/0511/15/05 11/15/05EFF A -dissolvedSummary Statistics for Downstream LocationsLGP-01 (Avg withDup)11/13/05LGP 11 SWALGP-11LGP 09 SWA LGP 06 SWA11/14/05 11/14/05 11/15/0511/16/05Table 24Dioxin and Furan Congener Results from the Quarterly Surface Water Effluent Monitoring StudyMarch 2006Tier 1 Endangered Species Act Monitoring and NPDES Permit Compliance MonitoringStudies Conducted in 2006Potlatch Mill, Lewiston, IDLocationSample IDFrequencyof DetectsMinimum Maximum Average MedianAnalyte Sample Date3/14/06pg/LDioxins2,3,7,8-TCDD 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0 / 5 ND ND ND ND 0.00125 U 0.007 J 0.085 J1,2,3,7,8-PeCDD 0.00125 U 0.00125 U 0.00125 U 0.003 J 0.003 J 0.00125 U 0.00125 U 2 / 5 0.001 0.003 0.002 0.001 0.003 J 0.01 J 0.122 J1,2,3,4,7,8-HxCDD 0.006 J 0.0015 U 0.00125 U 0.006 J 0.007 J 0.0025 U 0.005 U&J 3 / 5 0.001 0.007 0.004 0.005 0.003 J 0.015 J 0.183 J1,2,3,6,7,8-HxCDD 0.01 J 0.01 J 0.003 U 0.014 J 0.023 J 0.017 J 0.0125 J 4 / 5 0.003 0.023 0.014 0.014 0.003 U 0.014 J 0.171 J1,2,3,7,8,9-HxCDD 0.008 J 0.003 U 0.002 U 0.012 J 0.016 J 0.005 U 0.0095 J 3 / 5 0.002 0.016 0.009 0.010 0.004 J 0.019 J 0.232 J1,2,3,4,6,7,8-HpCDD 0.137 0.187 0.138 0.252 0.49 0.276 0.202 5 / 5 0.138 0.490 0.272 0.252 0.024 J 0.163 1.991,2,3,4,6,7,8,9-OCDD 0.973 1.05 0.968 2.06 2.71 1.73 1.195 5 / 5 0.968 2.710 1.733 1.730 0.106 J 0.855 10.4Furans2,3,7,8-TCDF 0.002 U 0.006 J 0.008 J 0.0035 U 0.007 J 0.009 J 0.0075 U&J 4 / 5 0.004 0.009 0.007 0.008 0.024 J 0.056 0.6831,2,3,7,8-PeCDF 0.00125 U 0.0015 U 0.00125 U 0.004 J 0.003 J 0.003 J 0.002125 J&U 4 / 5 0.001 0.004 0.003 0.003 0.009 J 0.022 J 0.268 J2,3,4,7,8-PeCDF 0.00125 U 0.003 J 0.0015 U 0.005 J 0.004 J 0.003 J 0.003 J 4 / 5 0.002 0.005 0.003 0.003 0.005 J 0.013 J 0.159 J1,2,3,4,7,8-HxCDF 0.003 J 0.003 J 0.00125 U 0.008 J 0.009 J 0.004 J 0.005 J 4 / 5 0.001 0.009 0.005 0.005 0.003 J 0.011 J 0.134 J1,2,3,6,7,8-HxCDF 0.00125 U 0.003 J 0.00125 U 0.005 J 0.005 J 0.003 J 0.003 J 4 / 5 0.001 0.005 0.003 0.003 0.00125 U 0.003 J 0.037 J1,2,3,7,8,9-HxCDF 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0 / 5 ND ND ND ND 0.00125 U 0.00125 U 0.03 U2,3,4,6,7,8-HxCDF 0.00125 U 0.00125 U 0.00125 U 0.002 U 0.003 J 0.00125 U 0.00125 U 1 / 5 0.001 0.003 0.002 0.001 0.00125 U 0.00125 U 0.03 U1,2,3,4,6,7,8-HpCDF 0.016 J 0.025 J 0.008 U 0.06 J 0.051 J 0.035 J 0.026 J 4 / 5 0.008 0.060 0.036 0.035 0.003 U 0.017 J 0.207 J1,2,3,4,7,8,9-HpCDF 0.00125 U 0.00125 U 0.00125 U 0.005 J 0.005 J 0.0015 U 0.002125 J&U 3 / 5 0.001 0.005 0.003 0.002 0.00125 U 0.00125 U 0.03 U1,2,3,4,6,7,8,9-OCDF 0.029 J 0.045 J 0.023 J 0.105 J 0.073 J 0.072 J 0.0505 J 5 / 5 0.023 0.105 0.065 0.072 0.004 J 0.033 J 0.402 JTotalsTotal TCDD 0.008 0.02 0.016 0.034 0.035 0.032 0.028 5 / 5 0.016 0.035 0.029 0.032 0.076 0.228 2.78Total PeCDD 0.00125 U 0.047 0.014 0.044 0.039 0.038 0.0565 5 / 5 0.014 0.057 0.038 0.039 0.00125 U 0.019 0.232Total HxCDD 0.062 0.063 0.033 0.123 0.167 0.112 0.081 5 / 5 0.033 0.167 0.103 0.112 0.016 0.142 1.732Total HpCDD 0.283 0.354 0.264 0.52 0.883 0.539 0.399 5 / 5 0.264 0.883 0.521 0.520 0.044 0.296 3.61Total TCDF 0.031 0.04 0.053 0.074 0.079 0.065 0.056 5 / 5 0.053 0.079 0.065 0.065 0.082 0.232 2.829Total PeCDF 0.012 0.026 0.015 0.052 0.045 0.037 0.0275 5 / 5 0.015 0.052 0.035 0.037 0.03 0.092 1.122Total HxCDF 0.023 0.036 0.02 0.088 0.077 0.045 0.0405 5 / 5 0.020 0.088 0.054 0.045 0.006 0.032 0.39Total HpCDF 0.034 0.05 0.015 0.131 0.118 0.077 0.0565 5 / 5 0.015 0.131 0.080 0.077 0.003 0.036 0.4392.3.7.8-TCDD TEQ (WHO 1998) 0.008 0.009 0.068 0.016 0.019 0.012 0.011 5 / 5 0.011 0.068 0.025 0.016 0.011 0.039 0.471Notes:J: Estimated valueAll samples have units of pg/L, except effluent particulate sample, which has units of pg/g.LGP-09LGP-11LGP-13-14LGP2-04-SW-ALGP2-05-SW-A LGP2-03-SW-ALGP-06Effluent EFF -Particulate3/14/06 3/14/06LGP2-EFF-AQ-AFilterEffluent EFF -ParticulateSummary Statistics for Downstream Locations(pg/g)CalculatedCR-REFCR-REF-SW-A3/14/06SR-REFSR-REF-SW-A3/14/06 3/14/06Effluent EFF -Dissolved(pg/L)U: Analyte not detected. Value is one half the reporting detection limit.Duplicates averaged using one half the reporting detection limit. If parent and duplicate qualifiers are different from each other, both are shown with an "&" separating them.TEQ calculated by summing the product of each individual congener and the corresponding toxic equivalency factor.LGP2-02-SW-AData was validated. Qualifiers presented represent validated results. Highlighted qualifiers are those that changed during validation.3/14/063/14/06LGP2-EFF-AQ-AColumn3/14/06LGP-01 (Avg. withDup)Table 25Dioxin and Furan Congener Results from the Quarterly Surface Water and Effluent Monitoring StudyJune 2006Tier 1 Endangered Species Act Monitoring and NPDES Permit Compliance MonitoringStudies Conducted in 2006Potlach Mill, Lewiston, IDLocationSample IDAnalyte Sample DateMinimum Maximum Average Medianpg/LDioxins2,3,7,8-TCDD 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0 / 5 ND 0.001 0.001 0.001 0.005 J 0.024 0.3331,2,3,7,8-PeCDD 0.003 J 0.004 J 0.004 J 0.005 J 0.003 J 0.005 K J 0.003125 J&U 5 / 5 0.003 0.005 0.004 0.004 0.004 J 0.02 J 0.278 J1,2,3,4,7,8-HxCDD 0.005 J 0.007 J 0.007 J 0.011 J 0.006 J 0.006 J 0.0025 U 4 / 5 0.003 0.011 0.007 0.006 0.002 U 0.032 J 0.444 J1,2,3,6,7,8-HxCDD 0.01 J 0.017 J 0.023 J 0.025 J 0.016 J 0.02 J 0.015 J 5 / 5 0.015 0.025 0.020 0.020 0.0025 U 0.032 J 0.444 J1,2,3,7,8,9-HxCDD 0.008 J 0.013 J 0.0075 U 0.025 J 0.011 J 0.014 J 0.00925 J&U 4 / 5 0.008 0.025 0.013 0.011 0.003 U 0.04 J 0.556 J1,2,3,4,6,7,8-HpCDD 0.261 0.347 0.463 0.49 0.275 0.417 0.317 J& 5 / 5 0.275 0.490 0.392 0.417 0.038 J 0.347 4.8191,2,3,4,6,7,8,9-OCDD 2.2 2.63 4.09 2.48 1.95 3.53 2.4385 J& 5 / 5 1.950 4.090 2.898 2.480 0.174 1.81 25.139Furans2,3,7,8-TCDF 0.0025 U 0.007 J 0.01 J 0.0045 U 0.0035 U 0.005 J 0.003 U&J 3 / 5 0.003 0.010 0.005 0.005 0.039 0.13 1.8061,2,3,7,8-PeCDF 0.0015 U 0.002 U 0.002 U 0.0025 U 0.002 U 0.004 J 0.001875 U 1 / 5 0.002 0.004 0.002 0.002 0.007 J 0.0155 U 0.431 U2,3,4,7,8-PeCDF 0.002 U 0.002 U 0.003 U 0.0025 U 0.002 U 0.004 J 0.00175 U 1 / 5 0.002 0.004 0.003 0.003 0.005 J 0.019 J 0.264 J1,2,3,4,7,8-HxCDF 0.002 U 0.008 J 0.01 J 0.009 J 0.008 J 0.009 J 0.00275 U 4 / 5 0.003 0.010 0.008 0.009 0.002 U 0.026 J 0.361 J1,2,3,6,7,8-HxCDF 0.003 U 0.006 J 0.007 J 0.008 J 0.003 U 0.007 J 0.00425 J&U 4 / 5 0.003 0.008 0.006 0.007 0.00125 U 0.004 U 0.111 U1,2,3,7,8,9-HxCDF 0.00125 U 0.00125 U 0.00125 U 0.003 J 0.00125 U 0.00125 U 0.00125 U 1 / 5 0.001 0.003 0.002 0.001 0.00125 U 0.00125 U 0.035 U2,3,4,6,7,8-HxCDF 0.0015 U 0.002 U 0.0025 U 0.0025 U 0.002 U 0.005 J 0.002125 U 1 / 5 0.002 0.005 0.003 0.003 0.00125 U 0.003 U 0.083 U1,2,3,4,6,7,8-HpCDF 0.036 J 0.057 J 0.08 0.059 J 0.061 J 0.078 0.064 &J 5 / 5 0.059 0.080 0.068 0.064 0.007 J 0.047 J 0.653 J1,2,3,4,7,8,9-HpCDF 0.005 J 0.006 J 0.007 J 0.009 J 0.007 J 0.007 J 0.005 J 5 / 5 0.005 0.009 0.007 0.007 0.003 J 0.003 U 0.083 U1,2,3,4,6,7,8,9-OCDF 0.071 J 0.128 0.175 0.089 J 0.122 J 0.167 0.1535 J 5 / 5 0.089 0.175 0.141 0.154 0.005 U 0.07 J 0.972 JTotalsTotal TCDD 0.01 0.019 0.027 0.031 0.013 0.025 0.016 5 / 5 0.013 0.031 0.022 0.025 0.078 0.306 4.25Total PeCDD 0.007 0.016 0.03 0.021 0.006 0.012 0.0075 5 / 5 0.006 0.030 0.015 0.012 0.004 0.096 1.333Total HxCDD 0.063 0.102 0.126 0.19 0.101 0.127 0.1005 5 / 5 0.101 0.190 0.129 0.126 0.032 0.303 4.208Total HpCDD 0.509 0.645 0.89 0.98 0.536 0.807 0.629 5 / 5 0.536 0.980 0.768 0.807 0.07 0.657 9.125Total TCDF 0.039 0.087 0.102 0.13 0.079 0.085 0.047 5 / 5 0.047 0.130 0.089 0.085 0.104 0.599 8.319Total PeCDF 0.018 0.049 0.062 0.052 0.039 0.052 0.027 5 / 5 0.027 0.062 0.046 0.052 0.03 0.158 2.194Total HxCDF 0.04 0.081 0.119 0.094 0.081 0.117 0.074 5 / 5 0.074 0.119 0.097 0.094 0.015 0.104 1.444Total HpCDF 0.087 0.146 0.202 0.135 0.136 0.185 0.159 5 / 5 0.135 0.202 0.163 0.159 0.017 0.098 1.3612.3.7.8-TCDD TEQ (WHO 1998) 0.012 0.017 0.020 0.022 0.014 0.021 0.013 5 / 5 0.013 0.022 0.018 0.020 0.018 0.085 1.185Notes:J: Estimated value.All samples have units of pg/L, except effluent particulate sample, which has units of pg/g.Data was validated. Qualifiers presented represent validated results. Highlighted qualifiers are those that changed during validation.Duplicates averaged using one half the reporting detection limit. If parent and duplicate qualifiers are different from each other, both are shown with an "&" separating them.6/5/06Effluent - DissolvedLGP2-EFF-AQ-A(COLUMN) 0609066/9/06CR-REFCR-REF-SWA061006LGP-09 LGP-06LGP2-03-SWA0607066/7/06LGP2-02-SWA060506Effluent - Part. (pg/g)LGP2-EFF-AQ-A(FILTER)0609066/9/06LGP2-EFF-AQ-A(FILTER) 060906EFF - Particulate6/9/066/8/06 6/8/06 6/7/06 6/6/06SR-REF LGP-13-14 LGP-11TEQ calculated by summing the product of each individual congener and the corresponding toxic equivalency factor.Frequencyof DetectsSummary Statistics for Downstream LocationsU: Analyte not detected. Value is one half the reporting detection limit.LGP-01 (Avg. withDup)SR-REF-SWA060806LGP2-05-SW-A060806LGP2-04-SW-A0607066/10/06Table 26Dioxin and Furan Congener Results from the Quarterly Surface Water and Effluent Monitoring StudySeptember 2006Tier 1 Endangered Species Act Monitoring and NPDES Permit Compliance MonitoringStudies Conducted in 2006Potlatch MillLocationSample IDAnalyte Sample Datepg/L2,3,7,8-TCDD 0.0007 U 0.00232 U 0.002985 U , U 0.000695 U 0.00181 U 0.002505 U , U 0.00159 U 0.002235 U , U 0.003825 U , U , U 0.00082 U 0.002075 U 0.002895 U , U 0.001095 U 0.002865 U 0.00396 U , U2,3,7,8-TCDF 0.0004 U 0.002165 U 0.00261 U , U 0.0156 0.0136 0.0292 , 0.012 J 0.0132 J , 0.0252 J , J , 0.0169 0.0113 J 0.0282 , J 0.015 0.0122 J 0.0272 , JNotes:Data have not been validated. Qualifiers presented represent analytical laboratory results.Total results were calculated by summing individual column and filter results for a given location.U: Analyte not detected. Value is one half the reporting detection limit.J: Estimated valueDuplicates averaged using one half the reporting detection limit.SR-REFSR-REF-SW-A091806 (Total)LGP-13-14 (Avg. withDup) (Total)LGP-09LGP-11Column ColumnColumnCR-REF-SW-A092106 (Filter)LGP2-04-SW-A-091906 (Total)9/19/069/21/069/19/069/18/069/20/06LGP-13-14 (Avg.with Dup) (Filter)LGP2-04-SW-A091906 (Filter)LGP-11LGP2-04-SW-A(Column)LGP-11CR-REF SR-REFLGP-13-14CR-REFCR-REF-SW-A092106 (Total)CR-REF9/21/06SR-REFSR-REF-SW-A091806 (Filter)9/18/069/20/06LGP2-03-SW-A092006 (Filter)LGP-09LGP-09LGP2-03-SW-A092006 (Total)Table 26Dioxin and Furan Congener Results from the Quarterly Surface Water and Effluent Monitoring StudySeptember 2006Tier 1 Endangered Species Act Monitoring and NPDES Permit Compliance MonitoringStudies Conducted in 2006Potlatch MillLocationSample IDAnalyte Sample Datepg/L2,3,7,8-TCDD2,3,7,8-TCDFFrequencyof DetectMinimum Maximum Average Median0.000865 U 0.0043 U 0.005165 U , U 0.00086 U 0.001815 U 0.002675 U , U 0 / 5 ND ND ND ND 0.00101 U 0.0012 U 0.0255 U0.0124 J 0.01 J 0.0224 J , J 0.00637 J 0.00754 J 0.01391 J , J 5 / 5 0.014 0.028 0.023 0.025 0.0303 0.0274 0.5830Notes:Data have not been validated. Qualifiers presented represent analytical laboratory results.Total results were calculated by summing individual column and filter results for a given location.U: Analyte not detected. Value is one half the reporting detection limit.J: Estimated valueDuplicates averaged using one half the reporting detection limit.Effluent - Part.(pg/g)LGP2-EFF-AQ-A091806 (Filter)9/18/06LGP2-02-SW-A092006 (Total)LGP2-02-SW-A-092006 (Filter)ColumnLGP-01LGP2-01-SW-A092206 (Total)9/22/06EFF -ParticulateLGP2-EFF-AQA-091806(Filter)9/18/069/20/069/20/06Effluent -Dissolved(Column)LGP-069/22/06LGP-01LGP-01LGP2-01-SWA-092206(Filter)ColumnSummary Statistics for Downstream LocationsLGP-06LGP-06

# FIGURESP P P P P P

P

P

P

P P P P P P P P P P P P P P P P P P

P

P

P

P

P

P

P

P

P

P P P P P

P

P

P P P

" ) " ) ! .



### # *

# *

# * ! .

" ) L O W E R

G R A N I T E

D A M

1 0 0 0 2 0 0 0 1 0 0 0 1 0 0 0

1 0 0 0 2 0 0 01000 2 0 0 0

2 0 0 0 1 0 0 0 2 0 0 0

2 0 0 0 2 0 0 0

2 0 0 0

2 0 0 0 2 0 0 0

1 0 0 0

1 0

0 0 S t e p t o e C a n y o n N i s q u a l l y J

o

h

n

C

a

n y

o

n

C l a y t o n G

u l c h

S o u t h D

e a d m a n G u l c h Y a k a w a w a

C

a n y o n

K e i t h C a n y o n

W

a w a w a i C

a n y o n

M a c M

u r r a y C a n y o n B u c k C a n y o n

K

l u g e

C

a

n y o n A l m

o t a C r e e

k

O f f i e l d

C

a n y

o n M A T C H

L I N E

L G P

- B L G P

- C

L G P

- A L G P

- 0 6

L G P

- 0 4 L G P

- 0 3 L G P

- 0 2 L G P

- 0 1

1 2 7

1 2 6 1 2 5 1 2 4 1 2 3 1 2 2 1 2 1 1 2 0

1 1 9

1 1 8

1 1 7

1 1 6

1 1 5

1 1 4

1 1 3

1 1 2 1 1 1 1 1 0

1 0 9

1 0 8

! P

P

P

P

P

P

P

P

P P P P P P P

P

P

P

P

P P P P P P

P

P

P

P

P P

P

P

P

P P P P P P

P

P

" " "

" ) ) ) 

### #

#

# # # # # *

*

* * * * *

!

! ! ! !

.

. . . . I D

A

H

O W

A

S

H

I N

G

T

O

N

1 0 0 0

1 0 0 0 2 0 0 0

1 0 0 0 3 0 0 0

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

2 0 0 0

1 0 0 0

1 0 0 0 2 0 0 0 2 0 0 0

D r y

C

r e e k H

a t w a i C

r e e k

L i n d s a y

C r e e k S t e p t o e C a n y o n

M A

T C H

L I N E

L E W I S T O N C L A R K S T O N L G P

- D

L G P

- E

L G P

- F L G P

- 0 7 L G P

- 1 4

L G P

- 1 3 L G P

- 1 2

L G P

- 1 0 L G P

- 1 1

L G P

- 0 9 L G P

- 0 8 L G P

- 0 6

L G P

- 0 5 L G P

- 0 4 L G P

- 0 3

P O T L A T C H

M I L L

O U T F A L L 5 4

3

2 1 0

1 4 0 1 3 9 1 3 8 1 3 7

1 3 6

1 3 5 1 3 4 1 3 3

1 3 2

1 3 1

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



## L o c a t i o n s f o r S e d i m e n t

, B e n t h i c C o m m u n i t y

, a n d R e c e i v i n g W a t e r S a m p l e s

P o t l a t c h P u l p & P a p e r M i l l

L e w i s t o n

, I d a h o 0 1 2 0

. 5

S c a l e i n M i l e s 

### L E G E N D

! . S e d i m e n t

, B e n t h i c C o m m u n i t y

, & W a t e r S a m p l e s



### # * S e d i m e n t S a m p l e s O n l y

" ) N o t P r o p o s e d f o r S a m p l i n g

P A p p r o x

. R i v e r M i l e s

R e c e i v i n g W a t e r S a m p l i n g T r a n s e c t s

1 0 0 0

- f t T o p o g r a p h i c C o n t o u r s

2 0 0

- f t T

o p o g r a p h i c C o n t o u r s

S t r e a m s

R i v e r

N o r t h A m e r i c a n D a t u m 1 9 8 3

, W a s h i n g t o n

S t a t e P l a n e

, S o u t h Z o n e

, U

. S

. f e e tJ:\Jobs\050297-Potlatch\Maps\2005_07\recon_station_locs.mxdEI07/12/20053:26PMFigure 2. Mean Water Velocity (ft/s)0.00.51.01.52.02.53.03.54.0

07 / 0 5 / 2 00 6 07 / 1 2 / 2 00 6 07 / 1 9 / 2 00 6 07 / 2 6 / 2 00 6 08 / 0 2 / 2 00 6 08 / 0 9 / 2 00 6 08 / 1 6 / 2 00 6 08 / 2 3 / 2 00 6 08 / 3 0 / 2 00 6 09 / 0 6 / 2 00 6 09 / 1 3 / 2 00 6 09 / 2 0 / 2 00 6 09 / 2 7 / 2 00 6 10 / 0 4 / 2 00 6 10 / 1 1 / 2 00 6 10 / 1 8 / 2 00 6Sample Date

Velocity (ft/s)SR REFCR REFLGP-13LGP-11LGP-09LGP-06LGP-01Figure 3. Mean Water pH66.577.588.599.510

0 7/05 / 2 0 06 0 7/12 / 2 0 06 0 7/19 / 2 0 06 0 7/26 / 2 0 06 0 8/02 / 2 0 06 0 8/09 / 2 0 06 0 8/16 / 2 0 06 0 8/23 / 2 0 06 0 8/30 / 2 0 06 0 9/06 / 2 0 06 0 9/13 / 2 0 06 0 9/20 / 2 0 06 0 9/27 / 2 0 06 1 0/04 / 2 0 06 1 0/11 / 2 0 06 1 0/18 / 2 0 06Sample Date

pHSR REFCR REFLGP-13LGP-11LGP-09LGP-06LGP-01IDEQ LowerRangIDEQ UpperRangeFigure 4. Mean Water Dissolved Oxygen (DO)567891011

07 / 0 5 / 2 00 6 07 / 1 2 / 2 00 6 07 / 1 9 / 2 00 6 07 / 2 6 / 2 00 6 08 / 0 2 / 2 00 6 08 / 0 9 / 2 00 6 08 / 1 6 / 2 00 6 08 / 2 3 / 2 00 6 08 / 3 0 / 2 00 6 09 / 0 6 / 2 00 6 09 / 1 3 / 2 00 6 09 / 2 0 / 2 00 6 09 / 2 7 / 2 00 6 10 / 0 4 / 2 00 6 10 / 1 1 / 2 00 6 10 / 1 8 / 2 00 6Sample Date

DO (mg/L)SR REFCR REFLGP-13LGP-11LGP-09LGP-06LGP-01Figure 5. Mean Water Temperature0510152025 07/05/2006 07/12/2006 07/19/2006 07/26/2006 08/02/2006 08/09/2006 08/16/2006 08/23/2006 08/30/2006 09/06/2006 09/13/2006 09/20/2006 09/27/2006 10/04/2006 10/11/2006 10/18/2006Sample Date

Temperature (Celcius)SR REFCR REFLGP-13LGP-11LGP-09LGP-06LGP-01Figure 6a. Biochemical Oxygen Demand in Shallow Surface Water0.11101001000 07 / 05/ 20 06 07 / 11/ 20 06 07 / 18/ 20 06 07 / 25/ 20 06 07 / 31/ 20 06 08 / 08/ 20 06 08 / 15/ 20 06 08 / 21/ 20 06 08 / 30/ 20 06 09 / 05/ 20 06 09 / 12/ 20 06 09 / 19/ 20 06 09 / 26/ 20 06 10 / 03/ 20 06 10 / 09/ 20 06 10 / 16/ 20 06 10 / 23/ 20 06Sample Date

BOD (mg/L)SR-REF-SCR-REF-SLGP-13-SLGP-11-SLGP-09-S(Avg w/ Dup)LGP-06-SLGP-01-SFigure 6b. Biochemical Oxygen Demand in Mid-Depth Surface Water0.1110100 0 7 /05/ 2 006 0 7 /11/ 2 006 0 7 /18/ 2 006 0 7 /25/ 2 006 0 7 /31/ 2 006 0 8 /08/ 2 006 0 8 /15/ 2 006 0 8 /21/ 2 006 0 8 /30/ 2 006 0 9 /05/ 2 006 0 9 /12/ 2 006 0 9 /19/ 2 006 0 9 /26/ 2 006 1 0 /03/ 2 006 1 0 /09/ 2 006 1 0 /16/ 2 006 1 0 /23/ 2 006Sample Date

BOD (mg/L)SR-REFMDLGP-13-MDLGP-11-MDLGP-09-MDLGP-06-MDLGP-01-MDFigure 7a. Ammonia Nitrogen in Shallow Surface Water00.020.040.060.080.10.12 0 7 /0 5 /2 0 06 0 7 /1 1 /2 0 06 0 7 /1 8 /2 0 06 0 7 /2 5 /2 0 06 0 7 /3 1 /2 0 06 0 8 /0 8 /2 0 06 0 8 /1 5 /2 0 06 0 8 /2 1 /2 0 06 0 8 /3 0 /2 0 06 0 9 /0 5 /2 0 06 0 9 /1 2 /2 0 06 0 9 /1 9 /2 0 06 0 9 /2 6 /2 0 06 1 0 /0 3 /2 0 06 1 0 /0 9 /2 0 06 1 0 /1 6 /2 0 06 1 0 /2 3 /2 0 06Sample Date

NH3-N (mg/L)SR-REF-SCR-REF-SLGP-13-SLGP-11-SLGP-09-S (Avgwith Dup)LGP-06-SLGP-01-SFigure 7b. Ammonia Nitrogen in Mid-Depth Surface Water00.010.020.030.040.050.06 07/05 / 2006 07/11 / 2006 07/18 / 2006 07/25 / 2006 07/31 / 2006 08/08 / 2006 08/15 / 2006 08/21 / 2006 08/30 / 2006 09/05 / 2006 09/12 / 2006 09/19 / 2006 09/26 / 2006 10/03 / 2006 10/09 / 2006 10/16 / 2006 10/23 / 2006Sample Date

NH3-N (mg/L)SR-REF-MDLGP-13-MDLGP-11-MDLGP-09-MDLGP-06-MDLGP-01-MDFigure 8a. Nitrate/Nitrite Nitrogen in Shallow Surface Water00.10.20.30.40.50.60.7

0 7 / 0 5/2 0 06 0 7 / 1 2/2 0 06 0 7 / 1 9/2 0 06 0 7 / 2 6/2 0 06 0 8 / 0 2/2 0 06 0 8 / 0 9/2 0 06 0 8 / 1 6/2 0 06 0 8 / 2 3/2 0 06 0 8 / 3 0/2 0 06 0 9 / 0 6/2 0 06 0 9 / 1 3/2 0 06 0 9 / 2 0/2 0 06 0 9 / 2 7/2 0 06

1 0 / 0 4/2 0 06

1 0 / 1 1/2 0 06

1 0 / 1 8/2 0 06Sample Date

NO2/NO3-N (mg/L)SR-REF-SCR-REF-SLGP-13-SLGP-11-SLGP-09-S (Avgwith Dup)LGP-06-SLGP-01-SFigure 8b. Nitrate/Nitrite Nitrogen in Mid-Depth Surface Water00.10.20.30.40.50.60.7

0 7 / 0 5/2 0 06 0 7 / 1 2/2 0 06 0 7 / 1 9/2 0 06 0 7 / 2 6/2 0 06 0 8 / 0 2/2 0 06 0 8 / 0 9/2 0 06 0 8 / 1 6/2 0 06 0 8 / 2 3/2 0 06 0 8 / 3 0/2 0 06 0 9 / 0 6/2 0 06 0 9 / 1 3/2 0 06 0 9 / 2 0/2 0 06 0 9 / 2 7/2 0 06 1 0 / 0 4/2 0 06 1 0 / 1 1/2 0 06 1 0 / 1 8/2 0 06Sample Date

NO2/NO3-N (mg/L)SR-REF-MDLGP-13-MDLGP-11-MDLGP-09-MDLGP-06-MDLGP-01-MDFigure 9a. Total Kjeldahl Nitrogen in Shallow Surface Water00.20.40.60.811.2

0 7/05/ 2 006 0 7/12/ 2 006 0 7/19/ 2 006 0 7/26/ 2 006 0 8/02/ 2 006 0 8/09/ 2 006 0 8/16/ 2 006 0 8/23/ 2 006 0 8/30/ 2 006 0 9/06/ 2 006 0 9/13/ 2 006 0 9/20/ 2 006 0 9/27/ 2 006 1 0/04/ 2 006 1 0/11/ 2 006 1 0/18/ 2 006Sample Depth

TKN (mg/L)SR-REF-SCR-REF-SLGP-13-SLGP-11-SLGP-09-S(Avg withDup)LGP-06-SLGP-01-SFigure 9b. Total Kjeldahl Nitrogen in Mid-Depth Surface-Water00.20.40.60.811.21.41.61.8

0 7 / 0 5/2 0 06 0 7 / 1 2/2 0 06 0 7 / 1 9/2 0 06 0 7 / 2 6/2 0 06 0 8 / 0 2/2 0 06 0 8 / 0 9/2 0 06 0 8 / 1 6/2 0 06 0 8 / 2 3/2 0 06 0 8 / 3 0/2 0 06 0 9 / 0 6/2 0 06 0 9 / 1 3/2 0 06 0 9 / 2 0/2 0 06 0 9 / 2 7/2 0 06 1 0 / 0 4/2 0 06 1 0 / 1 1/2 0 06 1 0 / 1 8/2 0 06Sample Date

TKN (mg/L)SR-REFMDLGP-13-MDLGP-11-MDLGP-09-MDLGP-06-MDLGP-01-MDFigure 10a. Total Phosphorus in Shallow Surface Water00.020.040.060.080.10.120.140.160.18 07/05/2006 07/11/2006 07/18/2006 07/25/2006 07/31/2006 08/08/2006 08/15/2006 08/21/2006 08/30/2006 09/05/2006 09/12/2006 09/19/2006 09/26/2006 10/03/2006 10/09/2006 10/16/2006 10/23/2006Sample Date

Total P (mg/L)SR-REF-SCR-REF-SLGP-13-SLGP-11-SLGP-09-S (Avgwith Dup)LGP-06-SLGP-01-SFigure 10b. Total Phosphorus in Mid-Depth Surface Water00.020.040.060.080.10.120.140.16

0 7 / 0 5/2 0 06 0 7 / 1 1/2 0 06 0 7 / 1 8/2 0 06 0 7 / 2 5/2 0 06 0 7 / 3 1/2 0 06 0 8 / 0 8/2 0 06 0 8 / 1 5/2 0 06 0 8 / 2 1/2 0 06 0 8 / 3 0/2 0 06 0 9 / 0 5/2 0 06 0 9 / 1 2/2 0 06 0 9 / 1 9/2 0 06 0 9 / 2 6/2 0 06 1 0 / 0 3/2 0 06 1 0 / 0 9/2 0 06 1 0 / 1 6/2 0 06 1 0 / 2 3/2 0 06Sample Date

Total P (mg/L)SR-REF-MDLGP-13-MDLGP-11-MDLGP-09-MDLGP-06-MDLGP-01-MDFigure 11a. Orthophosphate Phosphorus in Shallow Surface Water00.010.020.030.040.050.060.070.08

0 7 / 0 5/2 0 06 0 7 / 1 1/2 0 06 0 7 / 1 8/2 0 06 0 7 / 2 5/2 0 06 0 7 / 3 1/2 0 06 0 8 / 0 8/2 0 06 0 8 / 1 5/2 0 06 0 8 / 2 1/2 0 06 0 8 / 3 0/2 0 06 0 9 / 0 5/2 0 06 0 9 / 1 2/2 0 06 0 9 / 1 9/2 0 06 0 9 / 2 6/2 0 06

1 0 / 0 3/2 0 06

1 0 / 0 9/2 0 06

1 0 / 1 6/2 0 06

1 0 / 2 3/2 0 06Sample Depth

Orthophosphate (mg/L)SR-REF-SCR-REF-SLGP-13-SLGP-11-SLGP-09-S (Avgwith Dup)LGP-06-SLGP-01-SFigure 11b. Orthophosphate Phosphorus in Mid-Depth Surface Water00.010.020.030.040.050.060.070.080.090.1

0 7 / 0 5/2 0 06 0 7 / 1 1/2 0 06 0 7 / 1 8/2 0 06 0 7 / 2 5/2 0 06 0 7 / 3 1/2 0 06 0 8 / 0 8/2 0 06 0 8 / 1 5/2 0 06 0 8 / 2 1/2 0 06 0 8 / 3 0/2 0 06 0 9 / 0 5/2 0 06 0 9 / 1 2/2 0 06 0 9 / 1 9/2 0 06 0 9 / 2 6/2 0 06

1 0 / 0 3/2 0 06

1 0 / 0 9/2 0 06

1 0 / 1 6/2 0 06

1 0 / 2 3/2 0 06Sample Date

Orthophosphate (mg/L)SR-REF-MDLGP-13-MDLGP-11-MDLGP-09-MDLGP-06-MDLGP-01-MDFigure 12. Quarterly Resin Acids in Receiving WaterFigure 12a Resin Acids in Receiving WaterNovember 20050.00010.0010.010.11CR-REF SR-REF LGP-14 LGP-13 LGP-11 LGP-09 LGP-06 LGP-01Location

Concentration (ug/L)Pimaric AcidSandaracopimaric AcidIsopimaric AcidPalustric AcidDehydroabietic AcidAbietic AcidNeoabietic Acid12,14-DichlorodehydroabieticAcidsTotal 12/14-ChlorodehydroabieticAcidFigure 12b Resin Acids in Receiving WaterMarch 20060.00010.0010.010.11CR-REF SR-REF LGP-13-14 LGP-11 LGP-09 LGP-06 LGP-01 (Avg.with Dup)Location

Concentration (ug/L)Pimaric AcidSandaracopimaric AcidIsopimaric AcidPalustric AcidDehydroabietic AcidAbietic AcidNeoabietic AcidTotal 12/14-ChlorodehydroabieticAcid12,14-DichlorodehydroabieticAcidsFigure 12c Resin Acids in Receiving WaterJune 20060.00010.0010.010.11CR-REF SR-REF LGP-13-14 LGP-11 LGP-09 LGP-06 LGP-01 (Avg.with Dup)Location

Concentration (ug/L)Pimaric AcidSandaracopimaric AcidIsopimaric AcidPalustric AcidDehydroabietic AcidAbietic AcidNeoabietic Acid12,14-DichlorodehydroabieticAcidsTotal 12/14-ChlorodehydroabieticAcidFigure 12d Resin Acids in Receiving WaterSeptember 20060.00010.0010.010.1110100CR-REF SR-REF LGP-13-14(Avg. withDup)LGP-11 LGP-09 LGP-06 LGP-01Location

Concentration (ug/L)Pimaric AcidIsopimaric AcidDehydroabietic AcidAbietic AcidTotal 12/14-ChlorodehydroabieticAcid9,10-DichlorostearicAcidLinoleic Acid

## Figure 13 Resin Acids in Effluent

Figure 13a Resin Acids in Effluent (Dissolved Phase)

0.0001 0.001 0.01 0.1

1 10 100

Nov-05 Feb-06 May-06 Aug-06Concentration (ug/L) 12,14-Dichlorodehydroabietic Acids

Abietic Acid

Dehydroabietic Acid

Isopimaric Acid

Neoabietic Acid

Palustric Acid

Pimaric Acid

Sandaracopimaric Acid

Total 12/14-Chlorodehydroabietic Acid Results from these sampling rounds are for total effluent because no sample was collected

for dissolved phase analysis. Results are estimated maximum possible dissolved phase

concentrations and likely overestimate actual dissolved phase concentrations.

Figure 13b Resin Acids in Effluent (Solid Phase)

0.001 0.01 0.1

1 10 100 1000

Nov-05 Feb-06 May-06 Aug-06Concentration (ug/g) 12,14-Dichlorodehydroabietic Acids

Abietic Acid

Dehydroabietic Acid

Isopimaric Acid

Neoabietic Acid

Palustric Acid

Pimaric Acid

Sandaracopimaric Acid

Total 12/14-Chlorodehydroabietic Acid Results from these sampling rounds are calculated from total effluent only (not from total

effluent minus dissolved phase effluent) because no sample was collected for dissolved

phase analysis. Results are estimated maximum possible solid phase concentrations and

may overestimate actual solid phase concentrations.Figure 14. Phytosterols in Receiving WaterFigure 14a Phytosterols in Receiving WaterNovember 20050.0010.010.11CR-REF SR-REF LGP-14 LGP-13 LGP-11 LGP-09 LGP-06 LGP-01(Avg. withDup)Location

Concentration (ug/L)beta-SitosterolCampesterolStigmastanolStigmasterolReteneFigure 14b Phytosterols in Receiving WaterMarch 20060.00010.0010.010.1110CR-REF SR-REF LGP-13-14 LGP-11 LGP-09 LGP-06 LGP-01(Avg. withDup)Location

Concentration (ug/L)CampesterolStigmasterolbeta-SitosterolStigmastanolReteneFigure 14c Phytosterols in Receiving WaterJune 20060.00010.0010.010.1110CR-REF SR-REF LGP-13-14 LGP-11 LGP-09 LGP-06 LGP-01 (Avg.with Dup)Location

Concentration (ug/L)beta-SitosterolCampesterolStigmastanolStigmasterolReteneFigure 14d Phytosterols in Receiving WaterSeptember 20060.0010.010.11CR-REF SR-REF LGP-13-14(Avg. withDup)LGP-11 LGP-09 LGP-06 LGP-01Location

Concentration (ug/L)beta-SitosterolRetene

## Figure 15 Phytosterols in Effluent

Figure 15a Phytosterols in Effluent (Dissolved Phase)

0.001 0.01 0.1

1 10 100 1000

Nov-05 Feb-06 May-06 Aug-06Concentration (ug/L) beta-Sitosterol

Campesterol

Stigmastanol

Stigmasterol

Retene Results from these sampling rounds are for total effluent because no sample was collected

for dissolved phase analysis. Results are estimated maximum possible dissolved phase

concentrations and likely overestimate actual dissolved phase concentrations.

Figure 15b Phytosterols in Effluent (Solid Phase)

0.01 0.1

1 10 100 1000 10000

Nov-05 Feb-06 May-06 Aug-06Concentration (ug/g) beta-Sitosterol

Campesterol

Stigmastanol

Stigmasterol

Retene Results from these sampling rounds are calculated from total effluent only (not from total

effluent minus dissolved phase effluent) because no sample was collected for dissolved

phase analysis. Results are estimated maximum possible solid phase concentrations and

may overestimate actual solid phase concentrations.Figure 16. Quarterly Chlorophenols in Receiving WaterFigure 16a Chlorophenols in Receiving WaterNovember 20050.00010.0010.010.11CR-REF SR-REF LGP-14 LGP-13 LGP-11 LGP-09 LGP-06 LGP-01 (Avg.with Dup)Location

Concentration (ug/L)2,3,4,6-Tetrachlorophenol2,4,5-Trichlorophenol2,4,6-Trichlorophenol3,4,5-TrichlorocatecholPentachlorophenol3,4,6-TrichlorocatecholTetrachlorocatechol3,4,5-Trichloroguaiacol3,4,6-Trichloroguaiacol4,5,6-TrichloroguaiacolTetrachloroguaiacolTrichlorosyringolFigure 16b Chlorophenols in Receiving WaterMarch 20060.0010.010.11CR-REF SR-REF LGP-13-14 LGP-11 LGP-09 LGP-06 LGP-01 (Avg.with Dup)Location

Concentration (ug/L)2,3,4,6-Tetrachlorophenol2,4,5-Trichlorophenol2,4,6-Trichlorophenol3,4,5-TrichlorocatecholPentachlorophenol3,4,6-TrichlorocatecholTetrachlorocatechol3,4,5-Trichloroguaiacol3,4,6-Trichloroguaiacol4,5,6-TrichloroguaiacolTetrachloroguaiacolTrichlorosyringolFigure 16c Chlorophenols in Receiving WaterJune 20060.0010.010.11CR-REF SR-REF LGP-13-14 LGP-11 LGP-09 LGP-06 LGP-01 (Avg.with Dup)Location

Concentration (ug/L)2,3,4,6-Tetrachlorophenol2,4,5-Trichlorophenol2,4,6-Trichlorophenol3,4,5-TrichlorocatecholPentachlorophenol3,4,6-TrichlorocatecholTetrachlorocatechol3,4,5-Trichloroguaiacol3,4,6-Trichloroguaiacol4,5,6-TrichloroguaiacolTetrachloroguaiacolTrichlorosyringolFigure 16d Chlorophenols in Receiving WaterSeptember 20060.00010.0010.010.11CR-REF SR-REF LGP-13-14(Avg. with Dup)LGP-11 LGP-09 LGP-06 LGP-01Location

Concentration (ug/L)2,3,4,6-Tetrachlorophenol2,4,5-Trichlorophenol2,4,6-Trichlorophenol3,4,5-TrichlorocatecholPentachlorophenol3,4,6-TrichlorocatecholTetrachlorocatechol3,4,5-Trichloroguaiacol3,4,6-Trichloroguaiacol4,5,6-TrichloroguaiacolTetrachloroguaiacolTrichlorosyringol

## Figure 17 Chlorophenols in Effluent

Figure 17a Chlorophenols in Effluent (Dissolved Phase)

0.0001 0.001 0.01 0.1

1

Nov-05 Feb-06 May-06 Aug-06Concentration (ug/L) 2,3,4,6-Tetrachlorophenol

2,4,5-Trichlorophenol

2,4,6-Trichlorophenol

3,4,5-Trichlorocatechol

Pentachlorophenol

3,4,6-Trichlorocatechol

Tetrachlorocatechol

3,4,5-Trichloroguaiacol

3,4,6-Trichloroguaiacol

4,5,6-Trichloroguaiacol

Tetrachloroguaiacol

Trichlorosyringol Results from these sampling rounds are for total effluent because no sample was collected

for dissolved phase analysis. Results are estimated maximum possible dissolved phase

concentrations and likely overestimate actual dissolved phase concentrations.

Figure 17b Chlorophenols in Effluent (Solid Phase)

0.00 0.00 0.01 0.10 1.00 10.00

Nov-05 Feb-06 May-06 Aug-06Concentration (ug/g) 2,3,4,6-Tetrachlorophenol

2,4,5-Trichlorophenol

2,4,6-Trichlorophenol

3,4,5-Trichlorocatechol

Pentachlorophenol

3,4,6-Trichlorocatechol

Tetrachlorocatechol

3,4,5-Trichloroguaiacol

3,4,6-Trichloroguaiacol

4,5,6-Trichloroguaiacol

Tetrachloroguaiacol

Trichlorosyringol Results from these sampling rounds are calculated from total effluent only (not from total

effluent minus dissolved phase effluent) because no sample was collected for dissolved

phase analysis. Results are estimated maximum possible solid phase concentrations and

may overestimate actual solid phase concentrations.Figure 18. Quarterly Chloroform in Receiving WaterFigure 18a Chloroform in Receiving WaterNovember 2005, March 2006, June 2006, & September 200600.050.10.150.20.250.3CR-REF SR-REF LGP-14 LGP-13 LGP-11 LGP-09 LGP-06 LGP-01(Avg. withDup)Location

Concentration (mg/L)ChloroformFigure 18b Chloroform in Effluent (Solid Phase)0510152025Nov-05 Feb-06 May-06 Aug-06Location

Concentration (mg/L)ChloroformFigure 19. Quarterly Physical Parameters in Receiving WaterFigure 19a Physical Parameters in Receiving WaterNovember 2005012345678910CR-REF SR-REF LGP-14 LGP-13 LGP-11 LGP-09 LGP-06 LGP-01(Avg. withDup)Location

Concentration (mg/L)Carbon, DissolvedOrganic (DOC)Carbon, TotalOrganic (TOC)Solids, TotalSuspended (TSS)Figure 19b Physical Parameters in Receiving WaterMarch 2006024681012CR-REF SR-REF LGP-13-14 LGP-11 LGP-09 LGP-06 LGP-01 (Avg.with Dup)Location

Concentration (mg/L)Carbon, DissolvedOrganic (DOC)Carbon, TotalOrganic (TOC)Solids, TotalSuspended (TSS)Figure 19c Physical Parameters in Receiving WaterJune 20060510152025303540CR-REF SR-REF LGP-13-14 LGP-11 LGP-09 LGP-06 LGP-01 (Avg.with Dup)Location

Concentration (mg/L)Carbon, DissolvedOrganic (DOC)Carbon, TotalOrganic (TOC)Solids, TotalSuspended (TSS)Figure 19d Physical Parameters in Receiving WaterSeptember 200601234567CR-REF SR-REF LGP-13-14(Avg. withDup)LGP-11 LGP-09 LGP-06 LGP-01Location

Concentration (mg/L)Carbon, DissolvedOrganic (DOC)Carbon, TotalOrganic (TOC)Solids, TotalSuspended (TSS)Figure 20. Quarterly Dioxins in Receiving WaterFigure 20c Dioxins in Receiving WaterJune 20060.0010.010.1110CR-REF SR-REF LGP-13-14 LGP-11 LGP-09 LGP-06 LGP-01 (Avg.with Dup)Location

Concentration (pg/L)2,3,7,8-TCDD1,2,3,7,8-PeCDD1,2,3,4,7,8-HxCDD1,2,3,6,7,8-HxCDD1,2,3,7,8,9-HxCDD1,2,3,4,6,7,8-HpCDDOCDDFigure 20b Dioxins in Receiving WaterMarch 20060.0010.010.1110CR-REF SR-REF LGP-13-14 LGP-11 LGP-09 LGP-06 LGP-01 (Avg.with Dup)Location

Concentration (pg/L)2,3,7,8-TCDD1,2,3,7,8-PeCDD1,2,3,4,7,8-HxCDD1,2,3,6,7,8-HxCDD1,2,3,7,8,9-HxCDD1,2,3,4,6,7,8-HpCDDOCDDFigure 20a Dioxins in Receiving WaterNovember 20050.0010.010.1110CR-REF SR-REF LGP-14 LGP-13 LGP-11 LGP-09 LGP-06 LGP-01 (Avgwith Dup)Location

Concentration (pg/L)2,3,7,8-TCDD1,2,3,7,8-PeCDD1,2,3,4,7,8-HxCDD1,2,3,6,7,8-HxCDD1,2,3,7,8,9-HxCDD1,2,3,4,6,7,8-HpCDDOCDDFigure 20d Dioxins in Receiving WaterSeptember 20060.0010.010.1110CR-REF SR-REF LGP-13-14(Avg. with Dup)LGP-11 LGP-09 LGP-06 LGP-01Location

Concentration (pg/L)2,3,7,8-TCDD

## Figure 21 Dioxins in Effluent

Figure 21a Dioxins in Effluent (Dissolved Phase)

0.001 0.01 0.1

1

Nov-05 Feb-06 May-06 Aug-06Concentration (pg/L) 2,3,7,8-TCDD

1,2,3,7,8-PeCDD

1,2,3,4,7,8-HxCDD

1,2,3,6,7,8-HxCDD

1,2,3,7,8,9-HxCDD

1,2,3,4,6,7,8-HpCDD

OCDD

Figure 21b Dioxins in Effluent (Solid Phase)

0.00 0.01 0.10 1.00 10.00 100.00

Nov-05 Feb-06 May-06 Aug-06Concentration (pg/g) 2,3,7,8-TCDD

1,2,3,7,8-PeCDD

1,2,3,4,7,8-HxCDD

1,2,3,6,7,8-HxCDD

1,2,3,7,8,9-HxCDD

1,2,3,4,6,7,8-HpCDD

OCDDFigure 22. Quarterly Furans in Receiving WaterFigure 22c Furans in Receiving WaterJune 20060.0010.010.11CR-REF SR-REF LGP-13-14 LGP-11 LGP-09 LGP-06 LGP-01 (Avg.with Dup)Location

Concentration (pg/L)2,3,7,8-TCDF1,2,3,7,8-PeCDF2,3,4,7,8-PeCDF1,2,3,4,7,8-HxCDF1,2,3,6,7,8-HxCDF1,2,3,7,8,9-HxCDFFigure 22b Furans in Receiving WaterMarch 20060.0010.010.11CR-REF SR-REF LGP-13-14 LGP-11 LGP-09 LGP-06 LGP-01 (Avg.with Dup)Location

Concentration (pg/L)2,3,7,8-TCDF1,2,3,7,8-PeCDF2,3,4,7,8-PeCDF1,2,3,4,7,8-HxCDF1,2,3,6,7,8-HxCDF1,2,3,7,8,9-HxCDFFigure 22a Furans in Receiving WaterNovember 20050.0010.010.11CR-REF SR-REF LGP-14 LGP-13 LGP-11 LGP-09 LGP-06 LGP-01 (Avgwith Dup)Location

Concentration (pg/L)2,3,7,8-TCDF1,2,3,7,8-PeCDF2,3,4,7,8-PeCDF1,2,3,4,7,8-HxCDF1,2,3,6,7,8-HxCDF1,2,3,7,8,9-HxCDFFigure 22d Furans in Receiving WaterSeptember 20060.0010.010.11CR-REF SR-REF LGP-13-14(Avg. with Dup)LGP-11 LGP-09 LGP-06 LGP-01Location

Concentration (pg/L)2,3,7,8-TCDF

## Figure 23 Furans in Effluent

) Figure 23a Furans in Effluent (Dissolved Phase)

0.001 0.01 0.1

1

Nov-05 Feb-06 May-06 Aug-06Concentration (pg/L) 2,3,7,8-TCDF

1,2,3,7,8-PeCDF

2,3,4,7,8-PeCDF

1,2,3,4,7,8-HxCDF

1,2,3,6,7,8-HxCDF

1,2,3,7,8,9-HxCDF

2,3,4,6,7,8-HxCDF

1,2,3,4,6,7,8-HpCDF

1,2,3,4,7,8,9-HpCDF

OCDF

Figure 23b Furans in Effluent (Solid Phase)

0.00 0.01 0.10 1.00 10.00

Nov-05 Feb-06 May-06 Aug-06Concentration (pg/g) 2,3,7,8-TCDF

1,2,3,7,8-PeCDF

2,3,4,7,8-PeCDF

1,2,3,4,7,8-HxCDF

1,2,3,6,7,8-HxCDF

1,2,3,7,8,9-HxCDF

2,3,4,6,7,8-HxCDF

1,2,3,4,6,7,8-HpCDF

1,2,3,4,7,8,9-HpCDF

OCDF

### E r

Tier 1 Endangered Species Act Mo nitoring and

NPDES Co mpliance Monitoring

Studies Conducted in 20 05

Potlatch Le wiston Facil i t y

Submitted to:

Potlatch Corporation

Lewiston, Id aho

Submitted by:

AMEC Earth & Environmental



### Westford, Massachu s ett s

January 2006

7 7050 0800Potlatch Cor p o r ation

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 05

Le w i st on, ID

Janu ar y 20 06



### TABLE OF CONT ENTS

Page

1.0 INTRODUCTION

.................................................................................................................. 1

2.0 FIELD SA MPLING AND ANALYTI C AL MET H ODS

........................................................... 3

2.1 FIELD SAMPLING

....................................................................................................... 3

2.1.1 Weekly Receiving Water Monitoring Study Sa mp ling Methods

....................... 3

2.1.2 Quarterly Surface Wate r and Effluent Study Sa mpling Meth ods

..................... 4

3.0 DATA HANDLING MET H ODS

............................................................................................ 6

3.1 FIELD DAT A

................................................................................................................ 6

3.2 ANALYTICAL DATA

.................................................................................................... 6

4.0 RESULT S

........................................................................................................................ .... 7

4.1 FIELD-MEASURED PARAMETERS

........................................................................... 7

4.1.1 Water Velocity

................................................................................................. 7

4.1.2 pH

.................................................................................................................... 7

4.1.3 Dissolved Oxygen

............................................................................................ 8

4.1.4 Water Temperature

......................................................................................... 8

4.2 CONVENTI ONAL PARAMET E RS

.............................................................................. 9

4.2.1 Total Suspe nded Solids

................................................................................... 9

4.2.2 Biochemical Oxygen De mand

......................................................................... 9

4.3 NUTRIENT S

................................................................................................................ 9

4.3.1 Ammonia Nitrogen

......................................................................................... 10

4.3.2 Nitrate/Nitrite Nitrogen

................................................................................... 10

4.3.3 Total Kjelda hl Nitrogenh

................................................................................ 10

4.3.4 Total Phosphorus

.......................................................................................... 11

4.3.5 Orthophosphate Phosphorus

......................................................................... 11

4.3.6 2,3,7,8-TCDD

................................................................................................ 11

4.3.7 2,3,7,8-TCDF

................................................................................................. 11

4.4 QUARTERL Y SURF ACE WATER AND EFFLUENT MONIT O RING STUDY........... 12

4.4.1 Resin Acids

.................................................................................................... 12

4.4.2 Phytosterols

................................................................................................... 12

4.4.3 Chlorophenolics

............................................................................................. 13

4.4.4 Chloroform

..................................................................................................... 13

4.4.5 Dissolved and Total Organic Carbon

............................................................. 13

4.4.6 Dioxin Cong eners

.......................................................................................... 13

4.4.7 Furans

........................................................................................................... 14

5.0 SUMMA R Y AND CON C L USIONS

.................................................................................... 16

REFERENCES

..................................................................................................................... ...... 17

Page iPotlatch Cor p o r ation

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 05

Le w i st on, ID

Janu ar y 20 06



### TABLE OF CONT ENTS

Page

LIST OF FI GUR ES

Figure 1 – L o cations for Sediment, Benthic Community, and Receiving Water Samp les

Figure 2 – Mean Water Velocity

Figure 3 – Mean Water pH

Figure 4 – Mean Dissolved Oxygen

Figure 5 – Mean Water Temperature

Figure 6a – Biochemical Oxygen De mand in Shallow Surface Water

Figure 6b – Biochemical Oxygen De mand in Mid

- Depth Surface Water

Figure 7a – Ammonia Nitrogen in Shallow Surface Water

Figure 7b – Ammonia Nitrogen in Mid-Depth Surface Water

Figure 8a – Nitrate/Nitrite Nitrogen i n Shallow Surface Wate r

Figure 8b – Nitrate/Nitrite Nitrogen i n Mid-Depth Surface Water

Figure 9a – Total Kjelda hl Nitrogen i n Shallow Surface Wate r

Figure 9b – Total Kjelda hl Nitrogen i n Mid-Depth Surface Water

Figure 10a – Total Phosphorus in S hallow Surface Water

Figure 10b – Total Phosphorus in Mid-Depth Surface Wate r

Figure 11a – Orthophosphate Phosphorus in S hallow Surface Water

Figure 11b – Orthophosphate Phosphorus in Mid-Depth Surface Water

Figure 12a – Resin Aci d s in Receiving Water

Figure 12b – Resin Aci d s in Effluen t

Figure 13a – Phytosterols in Recei v ing Water

Figure 13b – Phytosterols in Efflue nt

Figure 14 – Quarterly Chloroform Concentration s

Figure 15 – Quarterly DOC and TOC in Receiving Water

Figure 16a – Dioxins in Receiving Water

Figure 16b – Dioxins in Effluent

Figure 17a – Furans in Receiving Water

Figure 17b – Furans in Effluent

LIST OF TA BLES

Table 1 – Sample Locations

Table 2 – Mean Velocity Results fro m W eekly Receiving Water Monitoring Study

Table 3 – Mean pH Results from Week ly Receiving Water Monitoring Study

Table 4 – Mean Dissolved Oxygen (DO) Results from Weekly Receiving Water Monitoring

Study

Table 5 – Mean Temperature Result s from W eekly Receiving Water Monitoring Stu d y

Table 6 – T o tal Suspen ded Solids ( T SS, mg/L) Results fro m Weekly Receiving Water

Monitoring Study

Table 7 – Bi ochemical Oxygen Demand (BOD, mg/L ) Results from Weekly Receiving Water

Monitoring Study

Table 8 – Ammonia Nitrogen Result s (mg/L) from Weekly Receiving Water Monitoring Study

Table 9 – Ni trate/Nitrite Nitrogen Results (mg/L) from Weekly Receiving Water Monitoring Study

Page i iPotlatch Cor p o r ation

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 05

Le w i st on, ID

Janu ar y 20 06



### TABLE OF CONT ENTS

Page

Table 10 – Total Kjelda hl Nitrogen Results (mg/L) from Weekly Receiving Water Monitoring

Study

Table 11 – Total Phosp horus Resul t s (mg/L) fr om Weekly Receiving Water Monitoring Study

Table 12 – Orthophosphate Phosphorus Resul t s (m g/L) from Weekly Receiving Water

Monitoring 7 7050 0800Study

Table 13 – 2,3,7,8-TCDD Results (pg/L) from Weekly Receiving Water Monitoring Study

Table 14 – 2

, 3,7,8-TCDF Results (pg / L) from Weekly Receiving Water Monitoring St udy

Table 15 – Resin Acid Results fro m the Quarterly Surface Water and Effluent Monitoring Stu d y

Table 16 – Phytosterol Results fro m the Quarterly Surface Water and Effluent Monitoring Stu d y

Table 17 – Chlorophenolic Result s from the Qu arterly Surface Water an d Effluent Monitoring

Study

Table 18 – Chloroform Results fro m the Quarterly Surface Water and Effluent Monitoring Stu d y

Table 19 – Total Organic Carbon (TOC) and Dis s olved Organic Carbon (DOC) Results from the

Quarterly Surface Wate r and Effluent Monitoring Study

Table 20 – Dioxin and Furan Congener Result s from the Quarterly Surface Water a nd Effluent

Monitoring Study

LIST OF AP PENDI CES

Appendix 1 – Field Data Reports

Appendix 2 – Analytical Laboratory Reports

Appendix 3 – Validation Reports

Page i i iPotlatch Cor p o r ation

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 05

Le w i st on, ID

Janu ar y 20 06



### 1.0 INTRODUCTION

The Potlatch Corporation - Lewiston Facility (“th e Facility”) i s owned and operated by Potlatch

Corporation, which has it s headquart e rs in Spoka ne, Washing ton. The Fa cility is locat ed

approximate l y one mile east of the Clearwater Memorial Bridge in Lewi s ton, Idaho. It is situate d

on the south bank of the Clearwater River appro x imately three miles ea st of the con f luence of

the Clearwater and Snake River. The location of t he Lewiston complex is shown in Figure 1-1.

The Facility discharges t r eated wastewater via a submerged 48 inch dia meter, 400 foot long

multiport diff u ser located in the confl uence. The diffuser is re ferred to as Outfall 001 (“the

Outfall”). EPA has recently reissued Potlatch’s National Pollutant Discharge Elimination

System (NPDES) Permit No. ID00001163, autho riz ing di scha r ge from the Outfall, to t he Snake

River and seeps from the secondary treatment pond to the Clearwater River. The Facility

discharges approximate l y 34 million gallons a da y of treated effluent from the Outfall i n to the

Snake River under NPDES permit No. ID00001163, which was re-issued by EPA on May 1,

2005.

Because EPA’s re-issuance of the Facility’s NP DES permit constituted a discretionary action

that could b eneficial ly or adversely affect th reate ned and end angered spe c ies or the i r critica l

habitat in the vicinity of the discharge, EPA was required to consult with t he U. S. Fish and

Wildlife Service (USFWS) and the National Marine Fisheries Service (NOAA Fisheries)

(collect i vely referred to as “the Services”) as specified in the E ndangered Species Act. EPA

prepared a Biological E v aluation (BE) to evaluate whether the reissuan ce of the per mit might

affect speci e s and/or th eir criti c al h abitat under the jurisdi cti on of both th e USFWS a nd NOAA

Fisheries. Subsequent t o NOAA Fis heries’ and USFWS’ review of the BE, the two agencies

prepared Biological Opinions (BO) consistent wit h the requir ements of the ESA. NOAA

Fisheries’ BO conclude d that the rei ssuance of t he permit “is not likely to jeopardize t he

continued e x istence of Snake River steelhead, Snake River spring/summer and fall chinook

salmon, and Snake River sockeye salmon, nor res ult in the destruction or adverse modification

of designate d critica l ha bitat for Snake River spring/summer and fall ch in ook salmon and Snake

Riv e r sockey e salmon.”

Although the NOAA Fis heries BO concluded th at the permit reissuance would not je opardize the

continued e x istence of t he listed sp ecies, the B O specified non-discreti onary terms and

conditions which must b e met by EPA and Potlatch to minimize “take” of l i sted spe c ie s as a

result of per mit reissuan ce. One of the non-discr etionary terms and conditions speci f ied in the

BO was imp lementation of a monitoring and asse ssment plan to character i ze condi tion s in

effluent, receiving water, sediment, and biologi c al media in t he vicinity of the Facili ty.

Attachment 1 to the per mit provides a summary of the requir ed monitoring and a sch edule for

it’s implementation. The monitoring plan summary identifies several Tier 1 studies that must be

performed during the first two years of the permit, as well as Tier 2 studie s that may o r may not

be performed during late r years of the permit, depending upo n the outco mes of the Tier 1

studies.

Page 1Potlatch Cor p o r ation

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 05

Le w i st on, ID

Janu ar y 20 06



### The purpose of this report is to present the results of ESA Tier 1 studies undertaken during

2005 that evaluate efflue nt and natur al waters ab ove and below the Facili ty. In particular, this

sampling was performed to fulfill req uirements of the Surface Water and Effluent Study, Benthic

Community Study, and the Receiving Water Monitoring Stu d y, that are described in detail in

Appendix A, Appendix D, and Appendix H, respectiv ely, of the Quality Assurance Pro ject Plan

(QAPP) for Tier 1 Endangered Species Act and NP DES Permit Complia nce Monitoring (AMEC,

2005). Whi le sediment samples from the Snake River and Clearwater River were c ollected

during sedi ment sampling conducte d by Anchor Environme n tal during t he summer of 2005. Th e

samples were submitted to the labor atory for benthic community analysis. However, the results

from this stu d y were not reported to Potlatch, Anchor or AMEC until Janu ary, 9 2006.

Therefore, the results of this study will not be incl uded in this report. These results will be

reported at a later date either as a supplement to this monit oring report or as part of the January

2007 monitoring report.

Surface Water and Effluent Study principal ly addresses the measureme n t of trace o r ganic

compounds and dioxins/ f urans (some of which a r e required f o r compliance with the NPDES

permit). To do this, a sp eciali zed sa mpling tech nique know n as High Volume Sampling was

employed. The Receiving Water Monitoring St udy primarily evaluates conventional water

quality parameters that are routinely measured in t he field (such as BOD, temperature, pH, and

TSS). Both studies u s e d an upstrea m/downstre a m study de sign, and th e stations th at were

selected an d sampled during the 20 05 sampling event are shown in Table 1 and on Figure 1.

Page 2Potlatch Cor p o r ation

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 05

Le w i st on, ID

Janu ar y 20 06



### 2.0 FIELD SA MPLING AND ANALYTI C AL MET H ODS

The field sa mpling meth ods and lab oratory analytical methods used to collect and a nalyze

samples for the Quarterly Surface Water and Effluent Study and the Weekly Receiving Water

Monitoring Study are d e scribed in t his sect ion.

2.1 Field Sampling

Field sampli ng methods for collect i n g river water and effluent samples are described below for

the Weekly Receiving Water Monitoring Study and the Quarterly Surface Water and Effluent

Study. For both weekly and quarterl y samples , chain of cust ody forms, p r ovided by the

analytical la bs, were co mpleted and accompani ed all sampl e s shipped t o the labs.

2.1.1 Weekly Rec e iving Water Monitorin g Stud y Sa mpling Methods

Water colu mn sampling was cond ucted at every sample site each week during the monitoring

period. Fiel d-measured water qualit y data and water samples for water quality analyses were

collected

. Collection s typically took 2 days per week to co mplete and occurred du ring: 8/3-

4/05, 8/10-1 1 /05, 8/17-1 8 /05, 8/24-2 5 /05, 8/30-3 1 /05, 9/7-8/ 05, 9/15/05, 9/21-22/05, 9/27-28/05,

10/5-6/05, 1 0 /11-12/05, 10/19-20/05, and 10/25- 26/05. For t he remainder of this repo rt,

collect ion da tes will ind icate the first day of collection for any given week (e.g., samples

collected on 8/3 or 8/4 will be ind icat ed as 8/3/05 ).

The parameters selecte d for the weekly monitor ing are grou ped as follo ws to facili ta te

discussion o f the colle cti on methods and results:

• Field-measured parameters: physical and c hemical properti es measured in the filed

using water quality monitoring instru m ents: velocity, pH, dissolved oxyg en (DO), an d

temperature;

• Conventional parameters: laborato r y measured parameters that are typically monitored

in water quality studies: total suspen ded solids ( T SS) and biochemical o xygen de ma nd

(BOD);

• Nutrients: T he nutrient p a rameters measured in this study in cluded ammonia nitroge n

(NH 3 

### -N), nitrate-nitrite nit rogen (NO 3 

### /N O 2 

### -N), tota l Kjedahl nitr ogen (TKN), total

phosphorus, and orthophosphate ph osphorus (Ortho-PO 4 

### ).

The sampling methods used in the fi eld close l y followed those described in Appendix H,

Sampling and Analysis Plan for Rece iving Water M onitoring, of the Quality Assurance Project

Plan (QAPP). Three deviations from the QAPP were noted: in two instances the water quality

meter failed to operate p r operly and parameters were not reported, in one instance th e flow

meter was damaged and readings w e re not available, in one instance the water qualit y meter

was not cali brated by Potlatch prior to f ield oper ation. These deviations were recorded in the

field logs an d reported to Potlatch.

Page 3Potlatch Cor p o r ation

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 05

Le w i st on, ID

Janu ar y 20 06



### 2.1.2 Quarterly Surface Water and Effluent Stud y Sampling Methods

Sampling for the quarterly monitoring was cond ucted from 8/24/05 to 8/3 1 /05 and fro m 11/13/05

to 11/19/05. Because an alytical resul t s from the second round of quarter sampling conducted in

Nove mber a r e not yet available, thi s report prese n ts only the results of th e first round conducted

in August. Nove mber 2 005 sampling data will b e presented in the Janua ry 2007 Data Report.

Field-measured water quality data and water samples for wat e r quality analyses were collected

at each sample locatio n on the Snake River and Clearwater River at mid

- depth. Effl uent

samples were taken at t he Facility a t the aeratio n basin. All high-volume samples were

collected usi ng the Infiltr e x 300 high volume water sampler. Other samples were coll ected

using the Inf iltrex 300 as a standard pump (i.e., the high-volume filters an d resin col u m ns were

bypassed). All field personnel wore pow der free latex gloves when handli ng sampling

equipment and samples.

Three types of samples were collect ed for qualit y control: tri p blanks, f iel d blanks, an d field

duplicates. A set of trip blanks (sam ple vials fil l e d with ultrap u re lab water) accompanied

sample bottl es to and fro m the field. One equipment blank w a s colle cted during the sampling

event. All sampling equipment was decontaminated accordi ng to methods describ e d in the

Quality Assurance Project Plan (QAPP) and th en rins ed with ultrapure lab water. This rinsate

was then sa mpled to produce the eq uipment blank.

The sampling methods used in the fi eld close l y followed those described in Appendix A,

Sampling and Analysis Plan for Surface Water and Effluent Study, of the QAPP. A few minor

deviations r elating to th e use of the high volume sampler, the Infiltrex 300, occurred during the

sampling event. For hig h volume samples, two sa mples were taken per day on some days,

although the QAPP state d only one sample would be taken per day. The QAPP also stated that

up to four fib e rglass fi lter s would be needed, to collect su spe nded solid s, per sample. During

the samplin g event, each sample required only one f ilter. Fi nally, rather than use a Kemmerer

or other grab sampling device for non-high volume samples, the Infiltrex 300 was used as a

standard pu mp to obtain these samples.

The parameters selecte d for the qu arterly monitoring are:

• Resin Acids: Abietic, De hydroabietic, Isopimaric, Neoabietic, Palustric, Pi maric,

Sandaracopimaric, and Total 12/14 Chlorodehydroabietic a c id;

• Phytosterols: B-sisoster ol, Campesterol, Stigmastanol, Stig masterol, and Retene;

• Chlorophenolics: 2

, 4,6- Trichlorophe nol, 2,4,5-Tr ichlorophen ol, 2,3,4,6-T e trachlorphe nol,

3,4,6-Trichlo rocatechol, 3,4,5-Trichlo rocatechol, 3,4,6-Tricho roguaiacol, 3,4,5-

Trichlorogua iacol, Tri c hl orosyringol, 4,5,6-Trichlo roguaiacol, Pentachloro phenol,

Tetrachloro guaiacol, an d Tetrachlor ocatechol;

• Chloroform;

• Dioxins: 2,3,7,8-Tetrachlorodibenz odioxin (2,3,7,8-TCDD), 1

, 2,3,7,8-

Pentachlorodibenzodioxin (1,2,3,7,8-PeCDD), 1, 2,3,4,7,8-Hexachlorodibenzodioxin

(1,2,3,7,8-HxCDD), 1,2,3,6,7,8-Hexachlorodibe nzodioxin (1,2,3,6,7,8-HxCDD),

1,2,3,7,8,9- Hexachlorodibenzodioxi n (1,2,3,7,8, 9 -HxCDD), 1,2,3,4,6,7,8

-

Page 4Potlatch Cor p o r ation

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 05

Le w i st on, ID

Janu ar y 20 06



### Heptachlorodibenzodioxin (1,2,3,4,6, 7 ,8-HpCDD), and Octachlorodibenzodioxins

(OCD D); an d

• Furans: 2,3

, 7,8-Tetrach lorodibenzof uran (2,3,7,8-TCDF), 1,2,3,7,8-

Pentachloro dibenzofura n (1,2,3,7,8-PeCDF), 2,3

, 4,7,8-Pentachlorodiben zofuran

(2,3,4,7,8-PeCDF), 1,2,3,4,7,8-Hexachlorodibe nzofuran (1, 2 ,3,4,7,8-HxCDF),

1,2,3,6,7,8- Hexachlorodibenzofura n (1,2,3,6,7, 8 -HxCDF), 1,2,3,7,8,9-

Hexachlordibenzofuran (1,2,3,7,8,9-HxCDF), 2,3

, 4,6,7,8-Hexachlorodibe nzofuran

(2,3,4,6,7,8-HxCDF), 1,2

, 3,4,6,7,8-Heptachlorodi benzofuran (1,2,3,4,6,7, 8 -HpCDF),

1,2,3,4,7,8,9

- Heptachlorodibenzofur an (1,2,3,4, 7 ,8,9-HpCDF), and

Octachlordi benzofurans (OCDD).

Page 5Potlatch Cor p o r ation

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 05

Le w i st on, ID

Janu ar y 20 06



### 3.0 DATA H A N D LING MET H OD S

Procedures for handling in the field a nd at the an alytical labor atory are described belo w.

3.1 Field Data

Data collect ed during fie ld activities were recorded in field n o tebooks an d then enter ed into

database for m at. Because water quality measurements were taken at several depths at one or

more points at a sample location, a ll measureme n ts are summarized as averages to provide an

overview of conditions p r esent at a l o ca tion. Th e mean water quality data were then

summarized in two ways: by locatio n and by sampling day. Summaries consist of calculated

maxi mum, minimu m , mean, and median values as well as st andard deviations and coefficient s

of variation for each par ameter. App endix 1 contains the fie l d data and summaries.

3.2 Analy t ical Data

Data received from the laboratories were entered into datab ase format, including dat a qualifiers.

When duplicates were collected, the results of th e two samples are repor ted as the mean

concentratio n of the two. If the result ing mean was less than the laborato r y detection limit for

that analyte, the result w a s recorded as nondetect (ND).

Analytical d a ta colle cte d for the Weekly Re ceiving Water Monitoring St udy and the Quarterly

Surface Water and Effluent Study have been summarized separately. For each Study, data

have been analyzed in t w o ways: b y sample site and by sample day. Summaries consist of

calculated maxi mum, minimu m , median, and mean value s. Undetect ed values were reported

as one half of the detect ion limit when a parameter was detected at least once at a sample site.

Appendix 2 contains the data reported from the analytical la boratories. Validation re ports are

shown in Appendix 3.

Page 6Potlatch Cor p o r ation

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 05

Le w i st on, ID

Janu ar y 20 06



### 4.0 RESULT S

This section reports the results of th e 2005 Weekly Receiving Water Monitoring Stu d y and the

August 2005 round of t he Quarterly Surface Water and Effluent Study.

4.1 Field-Measured Param e ters

The parameters measured in the fiel d were wa ter velocity, pH, dissolved oxygen (DO), and

temperature. These par ameters were measur ed at each loca t ion during e a ch samplin g period.

Measureme n ts were taken at several depths at o ne or more points along a transect o f the river

channel at e a ch sample site. A mean daily value for each pa rameter was calculat ed f r om all

measureme n ts colle cted on a sample day. This mean represents the co nditions at t he sample

location at t he time of monitoring. T ables 2 thro ugh 5 prese n t the means for each sampling day

for water velocity, pH, DO, and temp erature, res pectively. Data are liste d in these ta bles in the

following or der:

• Clearwater River refere nce locat ion (CR REF)

• Snake River reference lo cation (SR REF)

• Locations d o wnsteam of the effluent from nearest to farthest :

o LGP-13

o LGP-09

o LGP-06

o LGP-01

These data are also pre s ented in Fi gures 2 thro ugh 5.

4.1.1 Water Velocity

Table 2 and Figure 2 sho w mean water velocity m easureme n ts colle cted during the Weekly

Receiving Water Monitoring Study. Mean wate r velocity at the Clearwater River reference

location was typically greater and more variable than velocity measured at all locat ions in the

Snake River. Over the e n tire monitoring period, velocity in the Clearwater River decreased from

a maxi mum of 1.8 ft/s to a minimum of 0.4 ft/s. Velocity in t he Snake River remaine d fairly

uniform throughout the monitoring period and ge nerally rema ined within 0

. 4 ft/s and 0. 01 ft/s.

4.1.2 pH

Table 3 and Figure 3 sho w mean pH measureme n ts colle cted during the Weekly Receiving

Water Monitoring Study. Mean pH was very sta ble througho ut the monitoring period at all

locations, ra nging from 7.31 to 8.72. During most sampling d a tes, pH was lowest in t he

Clearwater River. The maxi mum p H values observed in the Snake River occurred i n different

locations fro m week to week. All pH measur eme n ts were in t he range of the Idaho Department

of Environmental Quality (IDEQ) water quality st andard range for pH of 6.5 to 9.5. All but three

of the pH measurements were in th e range of t he Washingt on Department of Ecolo gy (WDOE)

Page 7Potlatch Cor p o r ation

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 05

Le w i st on, ID

Janu ar y 20 06



### water qualit y standard range for pH of 6.5 to 8.5. The three pH measure m ents that were

outside the WDOE stan dard range were collect ed on July 13, 2005, fro m the Snake River

reference lo cation (pH = 8.56) and a t the two locations farthe st downstre a m from the Facility

(pH = 8.72 at LGP-06 an d pH = 8.68 at LGP-01)

. These very minor deviations from the water

quality stan dard range at such a di stance dow nstream from the Facilit y are highly unlikely to b e

attributable t o the Facil it y’s discharg e

.

4.1.3 Dissolved Ox y gen

Table 4 and Figure 4 sho w mean DO measureme n ts colle cted during the Weekly Receiving

Water Monitoring Study. Mean DO generally incr eased at a ll locat ions o v er the moni toring

period. The highest DO concentratio n s were typically observed at the Clearwater River

reference lo cation (CR-REF), while the lowest DO concentrations were o b served at the Snake

River refere nce locat ion s (SR-REF) for all dates before October, when the lowest DO

concentratio n s were observed at LGP-01. Conc entrations of DO at the other sample locations

were similar throughout the monitoring period. With the exception of the Snake River reference

location duri ng the perio d from July 13, 2005 thr ough August 10, 2005 ( w hen DO ra nged from

6.25 to 7.68 mg/L), DO a t all loca t ion s and dates exceeded the WDOE water quality st andard

for DO, which is a minimum of 8 mg/L DO. EPA used this wa ter quality st andard as th e toxicity

benchmark for DO in its Biological E v aluation and as the basis for the co mputation of the

effluent limit ations for Bi ochemical Oxygen Demand (BOD) i n the permit. The finding that all

downstream DO measurements were at least 8 mg/L, and were therefore compliant with the

WDOE water quality sta ndard, indicates that the Facility discharge is not affecting DO

downstream of the Facil i t y.

4.1.4 Water Temperature

Mean water temperatures generally decreased a t all loca t ion s over the monitoring per iod. The

highest temperatures were always observed at SR-REF e x c ept for 8/3/0 5 , where the highest

temperature was at LGP-01. The lo west temper atures were always observed at CR-REF. At

the other Snake River locations, wat e r temperatures tended to increase moving fro m upstream

to downstream, such that the lowest Snake River temperatures were measured clo s est to the

Facility, and the highest temperatures were mea s ured farthe st from the Facility (app roaching

the Lower Granite Dam). During July, only the Snake River reference loca t ion temperatures

exceeded the temperature benchmark for July and August of 20 degrees C used in EPA’s

Biological E v aluation.

During August, the temperature benchmark of 20 degrees C was exceeded only at the Snake

River refere nce locat ion and on one day at locati on LGP-01 (the farthest downstream location),

when a temperature of 20.3 degrees C was recorded.

EPA’s Biological Evaluation used a t e mperature benc hmark of 18 degrees C for September and

October. During September, the temperature at the Snake River refere nce locat ion exceeded

the benchmark on all sa mpling dates. The temperature measured at the three farthest

downstream Snake River sampling l o cations (L GP-09, LGP-06, and LGP-01) exceeded the

benchmark of 18 degrees C on the first one or t w o sampling dates in the monitoring period, and

Page 8Potlatch Cor p o r ation

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 05

Le w i st on, ID

Janu ar y 20 06



### were below the benchmark from September 19, 2005 through the end o f October. The

temperature measured at LGP-13 (closest to the Facility) did not exceed the benchmark of 18

degrees C on any sampling date.

4.2 Conventional Parameters

Conventional parameters analyzed during this study were to tal suspend ed solids (TSS) and

biochemical oxygen de mand (BOD). For those samples with nondetectab le concentra tions, the

concentratio n was calcul ated by using one half th e detection l i mit. If an analyte was not

detectable a c ross al l site s on a given sample day, it was considered not p r esent.

4.2.1 Total Suspended Solids

Table 6 presents the Tot al suspende d solids (TS S ) concentr a tions for ea ch sampling day of the

monitoring period. TSS concentratio n s were ND in all but 17 out of 221 samples. The detection

limit for TSS was 5 mg/L. Detected concentratio n s ranged fr om 5 mg/L to 12 mg/L with the

maxi mum c oncentration occurring at SR-REF-MD, on 7/7/05. Among the upstream samples,

TSS concentrations rang ed from ND to 12 mg/L. Among downstream samples, TSS

concentratio n s ranged fr om ND to 1 1 mg/L.

EPA’s Biological Evaluation used a t o xicity benchmark of 10 mg/L for TSS. Two of the 221

measureme n ts colle cted during the study exc eed ed 10 mg/L. One excee dance of 12 mg/L

occurred on July 7, 2005 at the Snake River reference locat io n, and the ot her exceedance 11

mg/L occurred at LGP-0 1 (the farthest downstre a m sampling location). Average concentrations

by date or by location were well bel ow the toxicity benchmark.

4.2.2 Biochemical Ox y gen Demand

Table 7 and Figures 6a ( s hallow surf ace water) and 6b (mid-depth surface water) present the

BOD concentrations for each sampli ng day of the monitoring period. Bio c hemical oxygen

demand (BOD) concentrations rang ed from ND to 7 mg/L. The maxi mu m concentration was

measured in a sample collected at station LGP-01-S on 9/7/05 and 9/21/ 05. Among the

upstream samples, BOD concentrati ons ranged f r om ND to 1

. 7 mg/L. Among the downstream

samples, BOD concentrations rang ed from ND to 7 mg/L. With the exception of the three

measureme n ts colle cted from shallow surfac e water at LGP-01 (the farthest downstr eam

sampling location) during September, all BOD c oncentrations were below 2 mg/L at all

locations. Concentration s typically hovered around 1 mg/L in July and August, and de creased

to non-detect by mid-October.

4.3 Nutrients

During weekly monitoring, samples were analyzed for several nitrogen- and phosph oruscontaining n u trients. Th e nitrogen-containing nu trients were ammonia nitrogen, nitrat e and

nitrite nitrog en, and total Kjeldahl nitr ogen. The phosphorus- c ontaining n u trients were total

phosphorus and orthophosphate. Fo r those samples with no ndetectable concentratio n s, the

concentratio n was calcul ated by using one half th e detection l i mit. If an analyte was not

Page 9Potlatch Cor p o r ation

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 05

Le w i st on, ID

Janu ar y 20 06



### detectable a c ross al l site s on a given sample day, it was considered not p r esent and t hus not

considered present.

4.3.1 Ammonia Nitrogen

Table 8 and Figures 7a ( s hallow surf ace water) and 7b (mid-depth surface water) present

ammonia nitrogen conce n trations for each sam pli ng day of the monitoring period. Ammonia

nitrogen con c entrations during the monitoring per iod ranged f r om nondetect to 0.11 mg/L. The

maxi mum c oncentration was measured in a sample colle cted at station L G P-13-S on 7/27/05.

Among the upstream samples, ammonia nitroge n c oncentrat ions ranged from ND to 0.03 mg/L.

Among the downstream samples, a mmonia nitrogen conce n trations ran ged from ND to 0.11

mg/L. In both shallow an d mid-depth samples, co ncentrations were typically below 0.04 mg/L.

During each week, the l o cation of th e maxi mum concentratio n varied among mid-depth

samples. In shallow sa mples, the maxi mum c oncentration s were often detected at LGP-01 (the

farthest downstream sample locatio n).

4.3.2 Nitrate/Nitrite Nitrogen

Table 9 and Figures 8a ( s hallow surf ace water) and 8b (mid-depth surface water) present

nitrate/nitrite nitrogen co ncentrations for each sa mpling day of the monitoring period.

Concentrati ons of nitrat e /nitrite nitro gen ranged from nondetect to 0.62 mg/L. The maxi mum

concentratio n was measured in a sa mple collect ed in the Sn ake River reference loca t ion on

10/11/05. T he minimum concentrati on, and the only nondetectable con c entration, was

measured in a sample collected in t he Clearwater River refe rence locat i on, also on 10/11/05.

Among the upstream samples, nitrat e /nitrite nitro gen concent rations rang ed from ND to 0.62

mg/L. Amo ng the downstream samples, nitrate/ nitrite nitrog en concentr a tions range d from

0.042 mg/L to 0.57 mg/L. Maxi mum concentratio n s in both shallow and mid-depth samples

were generally observed in the Snake River reference locat io n. Concentrations tende d to

increase ov er the durati on of the stu d y at both depths, with t he exception of the Clearwater

River refere nce locat ion , where concentrations r e mained constant over the duration of the

study. The concentratio n profile observed in the Snake River samples su ggests the e x istence

of a non-poi nt source co ntribution of nitrate/nitrite nitrogen alo ng the lengt h of the River.

4.3.3 Total Kjeldahl Nitrogen

Table 10 an d Figures 9a (shallow su rface water) and 9b (mid-depth surfa c e water) present the

total Kjeldah l nitrogen (T KN) concentrations for e a ch samplin g day of the monitoring period.

TKN concentrations rang ed from nondetect to 1.5 mg/L. Non detectable concentration s were

observed at several site l o cations a s well as the Clearwater River refere nce locat ion . The

maxi mum c oncentration was measured in a sample colle cted at station L G P-01-S on 9/21/05.

Among the upstream samples, TKN concentratio n s ranged fr om ND to 0.7 mg/L. Among the

downstream samples, T K N concentrations range d from ND to 1.5 mg/L. Concentrati ons of TKN

were fairly constant duri ng the durati on of the stu d y with perhaps a small i n crease over time.

Concentrati ons at locat i on LGP-01 (the farthest downstream sample location) are sli ghtly higher

than concen trations at lo cations closer to the Fa cility.

Page 1 0Potlatch Cor p o r ation

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 05

Le w i st on, ID

Janu ar y 20 06



### 4.3.4 Total Phosphorus

Table 11 an d Figures 10 a (shallow surface water) and 10b (mid-depth surface water) present

the total pho sphorus con c entrations f o r each sampling day of the monitoring period.

Total phosp horus conce n trations ran ged from ND to 0.13 mg/L. Nondetect concentr a tions were

observed three times, all at the Clearwater River reference lo cation. The maxi mum

concentratio n was measured in a sa mple collect ed at station LGP-01-S o n 9/21/05. Among

upstream samples, total phosphorus ranged from ND to 0.12 mg/L. Amo ng downstream

samples, tot al phosphor us ranged fr om 0.02 mg/L to 0.13 mg/L. Maximu m concentrations in

shallow samples were o b served in different loc at ions from week to week. In mid-depth

samples, maximu m concentrations were often obser ved at the Snake River reference location.

Concentrati ons remained constant a t the Clearwater River re ference loca t ion. At bot h depths,

concentratio n s in the Sn ake River tended to incr ease over the duration of the study through

September, then decrea s ed in Octo ber. The co ncentration profile obser ved in the Snake River

samples su ggests the e x istence of a non-point source contr ibution of ph osphorus al ong the

length of the River.

4.3.5 Orthophos phate Phosphorus

Table 12 an d Figures 11 a (shallow surface water) and 11b (mid-depth surface water) present

the orthophosphate pho sphorus con c entrations f o r each sampling day of the monitoring period.

Orthophosphate phosph orus concen trations rang ed from ND to 0.10 mg/L. Nondetectable

concentratio n s were observed three times, all at the Clearwater River reference locat ion. The

maxi mum c oncentration was measured in a sample colle cted at station L G P-09-S an d LGP-06-

S on 10/5/05. Among u p stream samples, orthophosphate concentration s ranged fro m ND to

0.09 mg/L. Among downstream samples, orthophosphate concentration s ranged fro m 0.009

mg/L to 0.1 mg/L. Ma ximum conce n trations in shallow samples were o b served in different

locations fro m week to week. In mid-depth samples, maximu m concentrations were o ften

observed at the Snake River reference location. Concentrati ons remained constant a t the

Clearwater River refere nce locat ion . At both depths, conce n trations in t he Snake River tended

to increase over the duration of the study th rough Septembe r, then decr eased in October. The

concentratio n profile observed in the Snake River samples su ggests the e x istence of a nonpoint source contribution of orthopho sphate phosphorus alon g the length of the River.

4.3.6 2,3,7,8-TCDD

Table 13 pr esents the 2,3,7,8-TCDD concentrat ions for each sampling day of the monitoring

period. 2,3, 7,8-TCDD was not detected in any sample on any date during the study.

4.3.7 2,3,7,8-TCDF

Table 14 pr esents the 2

, 3,7,8-TCDF concentrati ons for each sampling d a y of the mo nitoring

period. 2,3, 7,8-TCDF was not detected in any sample on any date during the study.

Page 1 1Potlatch Cor p o r ation

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 05

Le w i st on, ID

Janu ar y 20 06



### 4.4 Quarterly Surface Water and Effluent Monitoring Stud y

Parameters with nondetectable con c entrations were represented by one half the de tection limit.

If an analyte was not detectable acro ss all sites, i t was consid ered not present and thu s not

considered i n further cal c ulations.

4.4.1 Resin Acids

Table 15 an d Figures 12 a (river samples) and 12 b (effluent samples) present the resi n acid

concentratio n s for each r i ver location and effluent . Most resin acids were not detected in the

Snake River and Clearwater River: Dehydroabi etic, Neoabi etic, Palustr i c , Pimaric,

Sandaracopimaric, and Total 12/14- Chlorodehydroabietic a c id. Abieti c acid was det ected at all

locations an d ranged from 0.009 ug/L at the Snake River reference locat ion to 0.035 ug/L at

LGP-09-SW -A, with a mean concent ration of 0.0 24 ug/L and a median concentration of 0.021

ug/L. Isopi maric acid r anged from ND at LGP-13-SW-A and LGP-14-SW-A to 0.006 ug/L at

LGP-09-SW -A. All resin acid con c e n trations are below the toxicity benchmark of 2.2 ug/L used

in EPA’s Monitoring Plan, attached to NOAA Fis h e ries’ Biological Opinion. Figure 12a shows

that resin acids show no trend in con c entration w i th distan c e from the diffuser. The r e sin acid

with the most variation i n concentrat ions was abi etic acid . Even among the results fo r this

compound, concentratio n s hovered around 0.02 ug/L, with some concentrations sl ig htly above

and some concentration s slight ly below 0.02 ug/L.

Table 15 also presents t he concentr a tions in the effluent as both disso lved and total.

Dehydroabi etic acid an d Palustric a c id were not detected in dissolved eff luent. In the total

effluent, Pal u stric acid was not detected. Figure 12b shows a substantia l difference between

the concentr a tions in the total and di ssolved samples, indi cati ng that the majority of resin acid s

are associ at ed with the solid fract i o n of effluent, rather than the disso lved fraction.

4.4.2 Ph y t oste r ols

Table 16 an d Figures 13 a (river samples) and 13 b (effluent samples) present the phytosterol

concentratio n s for each r i ver location and effluent . Retene was not detected in river or effluent

samples. Stigmastanol was not detected in rive r samples. B-sitosterol concentratio n s ranged

from 0.46 ug/L at the Clearwater River reference location to 3.39 ug/L at LGP-01-SW-A, with a

mean concentration of 1. 12 ug/L and a median concentration of 0.679 ug/ L. Campesterol

concentratio n s ranged fr om 0.038 ug/L at the Clearwater River reference location to 0.27 ug/L

at LGP-01-SW-A, with a mean concentration of 0. 076 ug/L an d a median concentratio n of 0.054

ug/L. Stigmasterol con c entrations ra nged from ND at the Clearwater Reference locat ion to

0.331 ug/L a t LGP-01-SW-A, with a mean concentration of 0. 095 ug/L an d a median

concentratio n of 0.067 u g /L. All phytosterol con c entrations, e x cept the maximu m concentration

of B-sitoster ol in LGP-01 (the farthest location fro m the Facilit y) (3.39 ug/L), were lower than the

toxicity benchmark of 2.5 ug/L used in EPA’s Mo nitoring Plan, attached to NOAA Fish e ries’

Biological O pinion.

Figure 13a shows that, with the exception of t he concentratio n of B-sitost erol in LGP-01,

concentratio n s were fairl y constant i n all sample s. B-sitoster ol had slig htl y elevated

Page 1 2Potlatch Cor p o r ation

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 05

Le w i st on, ID

Janu ar y 20 06



### concentratio n s in the tw o samples cl osest to the diffuser (LGP-013 and LGP-14), the n

decreased d o wnstream. This con c e n tration profi le may repre s ent a limite d area of sli ghtly

elevated concentrations associa t ed with the Facility. However, given that the maximum

concentratio n of this co mpound in LGP-01, it is certainly po ssible th at a source of B

- sitosterol

exists in are a between the Facility a nd sampling location LG P-01.

Figure 13b shows a substantial differ ence between t he concentrations in the total an d dissolved

samples, in dicating that the majority of phytosterols are associated with the solid fra c tion of

effluent, rath er than the dissolved fr action.

4.4.3 Chlorophe nolics

Table 17 pr esents the chlorophenoli cs concentr a tions for ea ch locati on. Chlorophenolics were

not detected in any river water samples, nor were they detected in the effl uent samples.

4.4.4 Chloroform

Table 18 an d Figure 16 present the chloroform concentration s for each lo cation. Chlo roform

was not detected with t he exception of LGP-01 and the Effl uent. At LGP-01, the chloroform

concentratio n was 0.19 ug/L. In the effluent, the chloroform concentration was 1.08 ug/L. The

detection l i m it for chloroform was 0.14 ug/L. Both detected concentrati ons of chlor oform are

less than the toxicity benchmark for chlorofor m of 12.4 ug/L used in EPA’s Biological Evaluation.

4.4.5 Dissolved and Total Organic Carbon

Table 19 an d Figure 17 present the Dissolved Organic Carbon (DOC) a nd Total Organic Carbon

(TOC) concentrations fo r each river sampling location. Table 19 also pre s ents DOC and TOC in

effluent samples. Conce n trations of DOC and T O C were ge nerally constant in river water

samples. DOC at LGP-11, 11.8 mg/L, was c onsi derably greater than any other observed

concentratio n of either DOC or TOC and could b e the result of sampling or analytical error. At

the other sa mpling locati ons, DOC concentration s ranged fro m 1.9 mg/L at CR REF to 3.1 mg/L

at LGP-01. Concentrati ons of TOC ranged from 2.1 mg/L at CR-REF to 2.9 mg/L at LGP-14,

LGP-09, LGP-06, and LGP-01.

In the efflue nt, DOC wa s 125 mg/L and TOC was 150 mg/L.

4.4.6 Dioxin Congeners

Table 20 an d Figures 18 a (river wate r samples) and 18b (efflu ent samples) presents th e dioxin

congener concentrations for each location and the effluent. 2,3,7,8-TCDD was not detected in

any river sa mpling locati on except LGP-13-SW-A , where the concentrat ion was 0.0 22 pg/L.

The mean river water concentration was 0.0038 pg/L and the median was 0.0013 pg/ L. The

single dete c ted concentr a tion, as wel l as the mean and median concentrat ions, are bel ow the

toxicity benchmark of 0.06 pg/L used in EPA’s Monitoring Plan as appended to NOAA Fisheries’

Biological O pinion.

Page 1 3Potlatch Cor p o r ation

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 05

Le w i st on, ID

Janu ar y 20 06



### 1,2,3,7,8-PeCDD was ND at all locat ions except LGP-06-SW -A and LGP-13-SW-A. The

maxi mum c oncentration of 1,2,3,7,8-PeCDD wa s 0.051 pg/L (at LGP-13-SW-A), the mean

concentratio n was 0.0076 pg/L, and t he median concentration was 0.0013 pg/L. The

concentratio n of 1,2,3,4, 7,8-HxCDD ranged from ND at two locations to 0.008 pg/L a t LGP-13-

SW-A. The mean concentration was 0.0032 pg/L and the median concen tration was 0.003

pg/L. The concentration of 1,2,3,6,7, 8-HxCDD ra nged from ND at three locations to 0. 04 pg/L

at LGP-13-SW-A. The mean concentration was 0.013 pg/L and the median concentr a tion was

0.0093 pg/L. The concentration of 1, 2,3,7,8,9-HxCDD ranged from 0.004 pg/L at the Clearwater

River refere nce locat ion to 0.038 pg/ L at LGP-13 -SW-A. The mean concentration was 0.012

pg/L and the median concentration w a s 0.0083. The concent ration of 1,2, 3,4,6,7,8-HpCDD

ranged from 0.056 pg/L at the Clearwater River reference lo cation to 0.2 66 pg/L at L G P-01-SWA. The mea n concentrat ion was 0.1 67 pg/L and the median concentratio n was 0.17 pg/L.

OCDD concentrations ra nged from 0.307 pg/L at the Clearwater River reference locat ion to 1.66

pg/L at LGP-01-SW-A. The mean concentration was 0.85 pg/L and the median concentration

was 0.83 pg/L.

Figure 18a i ndicates tha t concentrati ons of tetra- and penta-chlorinated di oxin congeners at

location LG P-13 (near the Facility) were s lightly higher than upstream or downstream

concentratio n s. Subseq uent rounds of quarterly sampling wil l be helpful i n evaluating whether

phenomenon represents a trend or a random eve n t. In either case, however, concentr a tions at

LGP-13 were lower than the toxicity benchmark for 2,3,7,8-TCDD.

2,3,7,8-TCDD was not detected in either the dissolv ed fraction of effluent or the solid f r action of

effluent. So me higher-chlorinated di oxin congeners (that is, t hose conge ners that ar e not

associat ed with pulp an d paper manufacturing processes) were detected in either t he dissolved

or solid fract ions of efflu ent. As sho w n on Figure 18b, the majority of dio xin congeners detected

in effluent w e re observed in the sol i d fraction.

4.4.7 Furans

Table 20 an d Figures 19 a (river wate r samples) and 19b (efflu ent samples) presents th e furan

congener co ncentrations for each location and th e effluent. 2

, 3,7,8-TCDF ranged from ND at

two location s to 0.006 p g /L at three l o cations. T he mean concentration was 0.0044 pg/L and

the median was 0.005 pg/L. The sin gle detected concentrati on, as well a s the mean and

median concentrations, are below the toxicity benchmark of 0.2 pg/L used in EPA’s Monitoring

Plan as app ended to NOAA Fisheries’ Biologi cal Opinion.

1,2,3,7,8-PeCDF ranged from ND at all locat ions except LGP-06-SW-A, where the

concentratio n was 0.003 pg/L. 2,3,4, 7,8-PeCDF concentratio n s ranged fr om ND at five

locations to 0.003 pg/L a t LGP-09-SW-A and LGP- 14-SW-A. 1,2,3,4,7,8

- HxCDF concentrations

ranged from ND at four locations to 0.006 pg/L a t LGP-14-SW-A. The mean concentration of

1,2,3,4,7,8- HxCDF was 0.0032 pg/L and the m edian was 0. 00325 pg/L. 1,2,3,6,7,8- HxCDF

concentratio n s ranged fr om ND at fo ur location s to 0.004 pg/ L at LGP-11 -SW-A. The mean

concentratio n was 0.0023 pg/L and t he median was 0.0023 pg/L. 1,2,3, 7,8,9-HxCDF was not

detected at any location . 2,3,4,6,7,8

- HxCDF wa s ND at all l o cations but LGP-06-SW-A, where

the concentr a tion was 0. 0021 pg/L. 1,2,3,4,6,7,8

- HpCDF wa s ND at all l o cations but LGP-13-

SW-A, where the conce n tration was 0.03 pg/L. 1,2,3,4,7,8,9

- HpCDF wa s ND at all l o cations but

Page 1 4Potlatch Cor p o r ation

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 05

Le w i st on, ID

Janu ar y 20 06



### LGP-11-SW -A, where the concentrat ion was 0.0 03 pg/L. OCDF concentrations rang ed from

0.007 pg/L a t LGP-13-SW-A to 0.045 pg/L at LGP-01-SW-A. The mean concentratio n was

0.026 pg/L a nd the mean was 0.025 pg/L.

2,3,7,8-TCDF was detected in both t he dissolved fraction of e ffluent and t he solid fra c tion of

effluent. Th e detected concentration of 2,3,7,8-T CDF in effluent is below the toxicity benchmark

for this com pound used in EPA’s Monitoring P lan as appended to NOAA Fisheries Biological

Opinion. Additionally, ce rtain higher- c hlorinated f u ran congen ers (that is, t hose conge ners that

are not asso ciated with p ulp and pap er manufacturing processes) were detected in ei ther the

dissolved or solid fractio n s of effluen t. As s hown on Figure 1 9b, the majority of furan congeners

detected in effluent were observed in the solid fr action.

Page 1 5Potlatch Cor p o r ation

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 05

Le w i st on, ID

Janu ar y 20 06



### 5.0 SUMMA R Y AND CON C L USIONS

This report presents the results of sampling conducted durin g 2005 to co mplete the Quarterly

Surface Water and Effluent Study and the Weekly Receiving Water Monitoring Stu d y, both part

of the Tier 1 Endangered Species A c t Monitoring and NPDES Permit Co mpliance Monitoring

required in n on-discretio nary terms a nd condition s set forth b y the Servic es in their Bi ological

Opinions on the re-issua n ce of Potlat ch’s NPDES permit by EPA. Additionally, the Behthic

Community Study, also required as a Tier 1 study, was condu cted. However, because the

results of th e study were not reported to Potlatch until Janu ary 9, 2005, the Benthic Community

Study results will be pre s ented in a subsequent Monitoring Study Report.

Receiving water and effl uent data co llected durin g the monitoring program has characterized

the water quality at:

• Two reference locati ons (Snake Rive r upstream of the efflue nt and the Clearwater River

upstream of the confluen ce with the Snake River) during bot h weekly and quarterly

monitoring programs;

• Four locatio ns in the Sn ake River, downstream of the Potlat ch effluent d u ring weekly

monitoring; and

• Six location s in the Sna k e River, downstream of the Potlatch effluent duri ng quarterly

monitoring.

The report presents all a nalytical results and di scusses the te mporal and spatial trend s in

measured parameters selected for t his investiga tion.

The results of both the Weekly Receiving Wate r Monitoring Study and the Quarterly Surface

Water and Effluent Study revealed no indication s t hat the Facil ity’s effluent has any infl uence on

downstream parameter measureme n ts. No m eaningful diff e rences bet ween reference locat ion

conditions a nd downstream conditio ns were observed. With a few exceptions, al l

measureme n ts complie d with toxicit y benchmarks and appl i c able water quality stan dards. The

few exceptions occurred at reference location s or at the farth e st downstr eam sampling location

from the Facility.

In conclu sio n , the result s of samplin g and analysis upstre a m and down s tream of the Facility

support the f inding in EP A’s Biological Evaluation and t he Services’ Biol ogical Opini ons that the

EPA’s re-issuance of Potlatch’s NPDES permi t is not likely to jeopardize the continued

existence of Snake River steelhead, Snake River spring/summer and fall chinook sal m on, and

Snake River sockeye sal m on, nor result in the d e struction or adverse mo dification of designated

critica l habit at for Snake River spring/summer a nd fall ch ino ok salmon a nd Snake River sockeye

salmon.

Page 1 6Potlatch Cor p o r ation

T i er 1 Endang ered Sp eci e s Act Monitorin g a nd NPDES Per m it Compli anc e Monitor ing

Studies C o n d u c ted in 20 05

Le w i st on, ID

Janu ar y 20 06



### REFER E NC ES

AMEC Earth and Environmental, Inc. (AMEC) and Anchor Environmental (Anchor). 2005.

Quality Assurance Proj ect Plan for Endangered Species Act Monitoring and NPDES Permit

Compliance Monitoring. Potlatch Corporation Le wiston Facil i t y. Ma y 200 5.

National Oceanic and At mospheric Adminstration Fis heries S e rvice (NOAA Fisheries)

. 2004.

Endangered Species Act Section 7 Consultation Biological O pinion And Magnuson-Stevens

Fishery Conservation and Management Act Essential Fish Habitat Consultation. Ap ril 2004.

U.S. EPA. 2003. Biological Evaluation of the P o tlatch Corporation Pulp and Paper Mill in

Lewiston, Id aho. December 2003.

U.S. EPA. 2005. Authorization to Discharge Under the National Pollutant Discharge

Elimination System. Pe rmit No.: ID0001163. Po tlatch Corp oration 803 Mill Road, Lewiston,

Idaho.

Page 1 7P P P P P P

P

P

P

P P P P P P P P P P P P P P P P P P

P

P

P

P

P

P

P

P

P

P P P P P

P

P

P P P

" ) " ) ! .



### # *

# *

# * ! .

" ) L O W E R

G R A N I T E

D A M

1 0 0 0 2 0 0 0 1 0 0 0 1 0 0 0

1 0 0 0 2 0 0 01000 2 0 0 0

2 0 0 0 1 0 0 0 2 0 0 0

2 0 0 0 2 0 0 0

2 0 0 0

2 0 0 0 2 0 0 0

1 0 0 0

1 0

0 0 S t e p t o e C a n y o n N i s q u a l l y J

o

h

n

C

a

n y

o

n

C l a y t o n G

u l c h

S o u t h D

e a d m a n G u l c h Y a k a w a w a

C

a n y o n

K e i t h C a n y o n

W

a w a w a i C

a n y o n

M a c M

u r r a y C a n y o n B u c k C a n y o n

K

l u g e

C

a

n y o n A l m

o t a C r e e

k

O f f i e l d

C

a n y

o n M A T C H

L I N E

L G P

- B L G P

- C

L G P

- A L G P

- 0 6

L G P

- 0 4 L G P

- 0 3 L G P

- 0 2 L G P

- 0 1

1 2 7

1 2 6 1 2 5 1 2 4 1 2 3 1 2 2 1 2 1 1 2 0

1 1 9

1 1 8

1 1 7

1 1 6

1 1 5

1 1 4

1 1 3

1 1 2 1 1 1 1 1 0

1 0 9

1 0 8

! P

P

P

P

P

P

P

P

P P P P P P P

P

P

P

P

P P P P P P

P

P

P

P

P P

P

P

P

P P P P P P

P

P

" " "

" ) ) ) 

### #

#

# # # # # *

*

* * * * *

!

! ! ! !

.

. . . . I D

A

H

O W

A

S

H

I N

G

T

O

N

1 0 0 0

1 0 0 0 2 0 0 0

1 0 0 0 3 0 0 0

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

2 0 0 0

1 0 0 0

1 0 0 0 2 0 0 0 2 0 0 0

D r y

C

r e e k H

a t w a i C

r e e k

L i n d s a y

C r e e k S t e p t o e C a n y o n

M A

T C H

L I N E

L E W I S T O N C L A R K S T O N L G P

- D

L G P

- E

L G P

- F L G P

- 0 7 L G P

- 1 4

L G P

- 1 3 L G P

- 1 2

L G P

- 1 0 L G P

- 1 1

L G P

- 0 9 L G P

- 0 8 L G P

- 0 6

L G P

- 0 5 L G P

- 0 4 L G P

- 0 3

P O T L A T C H

M I L L

O U T F A L L 5 4

3

2 1 0

1 4 0 1 3 9 1 3 8 1 3 7

1 3 6

1 3 5 1 3 4 1 3 3

1 3 2

1 3 1

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



## L o c a t i o n s f o r S e d i m e n t

, B e n t h i c C o m m u n i t y

, a n d R e c e i v i n g W a t e r S a m p l e s

P o t l a t c h P u l p & P a p e r M i l l

L e w i s t o n

, I d a h o 0 1 2 0

. 5

S c a l e i n M i l e s 

### L E G E N D

! . S e d i m e n t

, B e n t h i c C o m m u n i t y

, & W a t e r S a m p l e s



### # * S e d i m e n t S a m p l e s O n l y

" ) N o t P r o p o s e d f o r S a m p l i n g

P A p p r o x

. R i v e r M i l e s

R e c e i v i n g W a t e r S a m p l i n g T r a n s e c t s

1 0 0 0

- f t T o p o g r a p h i c C o n t o u r s

2 0 0

- f t T

o p o g r a p h i c C o n t o u r s

S t r e a m s

R i v e r

N o r t h A m e r i c a n D a t u m 1 9 8 3

, W a s h i n g t o n

S t a t e P l a n e

, S o u t h Z o n e

, U

. S

. f e e tJ:\Jobs\050297-Potlatch\Maps\2005_07\recon_station_locs.mxdEI07/12/20053:26PMFigure 2. Mean Water Velocity0.000.200.400.600.801.001.201.401.601.802.00 07/04/2005 07/11/2005 07/18/2005 07/25/2005 08/01/2005 08/08/2005 08/15/2005 08/22/2005 08/29/2005 09/05/2005 09/12/2005 09/19/2005 09/26/2005 10/03/2005 10/10/2005 10/17/2005 10/24/2005 10/31/2005Sample Date

Velocity (ft/s)CR REFSR REFLGP-13LGP-09LGP-06LGP-01Figure 3. Mean Water pH6.007.008.009.00 07/04/2005 07/11/2005 07/18/2005 07/25/2005 08/01/2005 08/08/2005 08/15/2005 08/22/2005 08/29/2005 09/05/2005 09/12/2005 09/19/2005 09/26/2005 10/03/2005 10/10/2005 10/17/2005 10/24/2005 10/31/2005Sample Date

pHCR REFSR REFLGP-13LGP-09LGP-06LGP-01Figure 4. Mean Dissolved Oxygen5.006.007.008.009.0010.0011.0012.0013.0014.00 07/04/2005 07/11/2005 07/18/2005 07/25/2005 08/01/2005 08/08/2005 08/15/2005 08/22/2005 08/29/2005 09/05/2005 09/12/2005 09/19/2005 09/26/2005 10/03/2005 10/10/2005 10/17/2005 10/24/2005 10/31/2005Sample Date

DO (mg/L)CR REFSR REFLGP-13LGP-09LGP-06LGP-01Figure 5. Mean Water Temperature910111213141516171819202122232425 07/04/2005 07/11/2005 07/18/2005 07/25/2005 08/01/2005 08/08/2005 08/15/2005 08/22/2005 08/29/2005 09/05/2005 09/12/2005 09/19/2005 09/26/2005 10/03/2005 10/10/2005 10/17/2005 10/24/2005 10/31/2005Sample Date

Degrees CelsiusCR REFSR REFLGP-13LGP-09LGP-06LGP-01Figure 6a. Biological Oxygen Demand in Shallow Surface Water012345678 06/25/2005 07/02/2005 07/09/2005 07/16/2005 07/23/2005 07/30/2005 08/06/2005 08/13/2005 08/20/2005 08/27/2005 09/03/2005 09/10/2005 09/17/2005 09/24/2005 10/01/2005 10/08/2005 10/15/2005 10/22/2005 10/29/2005 11/05/2005Sample Date

BOD (mg/L)SR-REF-SCR-REF-SLGP-13-SLGP-11-SLGP-09-SLGP-06-SLGP-01-SFigure 6b. Biological Oxygen Demand in Mid-Depth Surface Water00.20.40.60.811.21.41.6 06/25/2005 07/02/2005 07/09/2005 07/16/2005 07/23/2005 07/30/2005 08/06/2005 08/13/2005 08/20/2005 08/27/2005 09/03/2005 09/10/2005 09/17/2005 09/24/2005 10/01/2005 10/08/2005 10/15/2005 10/22/2005 10/29/2005 11/05/2005Sample Date

BOD (mg/L)SR-REF-MDLGP-13-MDLGP-11-MDLGP-09-MDLGP-06-MDLGP-01-MDFigure 7a. Ammonia Nitrogen in Shallow Surface Water00.020.040.060.080.10.12 06/25/2005 07/02/2005 07/09/2005 07/16/2005 07/23/2005 07/30/2005 08/06/2005 08/13/2005 08/20/2005 08/27/2005 09/03/2005 09/10/2005 09/17/2005 09/24/2005 10/01/2005 10/08/2005 10/15/2005 10/22/2005 10/29/2005 11/05/2005Sample Date

NH3-N (mg/L)SR-REF-SCR-REF-SLGP-13-SLGP-11-SLGP-09-SLGP-06-SLGP-01-SFigure 7b. Ammonia Nitrogen in Mid-Depth Surface Water00.020.040.060.080.10.12 06/25/2005 07/02/2005 07/09/2005 07/16/2005 07/23/2005 07/30/2005 08/06/2005 08/13/2005 08/20/2005 08/27/2005 09/03/2005 09/10/2005 09/17/2005 09/24/2005 10/01/2005 10/08/2005 10/15/2005 10/22/2005 10/29/2005 11/05/2005Sample Date

NH3-N (mg/L)SR-REF-MDLGP-13-MDLGP-11-MDLGP-09-MDLGP-06-MDLGP-01-MDFigure 8a. Nitrate/Nitrite Nitrogen in Shallow Surface Water00.10.20.30.40.50.60.7 06/25/2005 07/02/2005 07/09/2005 07/16/2005 07/23/2005 07/30/2005 08/06/2005 08/13/2005 08/20/2005 08/27/2005 09/03/2005 09/10/2005 09/17/2005 09/24/2005 10/01/2005 10/08/2005 10/15/2005 10/22/2005 10/29/2005 11/05/2005Sample Date

NO2/NO3-N (mg/L)SR-REF-SCR-REF-SLGP-13-SLGP-11-SLGP-09-SLGP-06-SLGP-01-SFigure 8b. Nitrate/Nitrite Nitrogen in Mid-Depth Surface Water00.10.20.30.40.50.60.7 06/25/2005 07/02/2005 07/09/2005 07/16/2005 07/23/2005 07/30/2005 08/06/2005 08/13/2005 08/20/2005 08/27/2005 09/03/2005 09/10/2005 09/17/2005 09/24/2005 10/01/2005 10/08/2005 10/15/2005 10/22/2005 10/29/2005 11/05/2005Sample Date

NO2/NO3-N (mg/L)SR-REF-MDLGP-13-MDLGP-11-MDLGP-09-MDLGP-06-MDLGP-01-MDFigure 9a. Total Kjeldahl Nitrogen in Shallow Surface Water00.20.40.60.811.21.41.6 06/25/2005 07/02/2005 07/09/2005 07/16/2005 07/23/2005 07/30/2005 08/06/2005 08/13/2005 08/20/2005 08/27/2005 09/03/2005 09/10/2005 09/17/2005 09/24/2005 10/01/2005 10/08/2005 10/15/2005 10/22/2005 10/29/2005 11/05/2005Sample Depth

TKN (mg/L)SR-REF-SCR-REF-SLGP-13-SLGP-11-SLGP-09-SLGP-06-SLGP-01-SFigure 9b. Total Kjeldahl Nitrogen in Mid-Depth Surface-Water00.10.20.30.40.50.60.70.80.91 

### 06/25/2005 07/02/2005 07/09/2005 07/16/2005 07/23/2005 07/30/2005 08/06/2005 08/13/2005 08/20/2005 08/27/2005 09/03/2005 09/10/2005 09/17/2005 09/24/2005 10/01/2005 10/08/2005 10/15/2005 10/22/2005 10/29/2005 11/05/2005Sample Date

TKN (mg/L)SR-REF-MDLGP-13-MDLGP-11-MDLGP-09-MDLGP-06-MDLGP-01-MDFigure 10a. Total Phosphorus in Shallow Surface Water00.020.040.060.080.10.120.14 06/25/2005 07/02/2005 07/09/2005 07/16/2005 07/23/2005 07/30/2005 08/06/2005 08/13/2005 08/20/2005 08/27/2005 09/03/2005 09/10/2005 09/17/2005 09/24/2005 10/01/2005 10/08/2005 10/15/2005 10/22/2005 10/29/2005 11/05/2005Sample Date

Total P (mg/L)SR-REF-SCR-REF-SLGP-13-SLGP-11-SLGP-09-SLGP-06-SLGP-01-S10b. Total Phosphorus in Mid-Depth Surface Water00.020.040.060.080.10.120.14 06/25/2005 07/02/2005 07/09/2005 07/16/2005 07/23/2005 07/30/2005 08/06/2005 08/13/2005 08/20/2005 08/27/2005 09/03/2005 09/10/2005 09/17/2005 09/24/2005 10/01/2005 10/08/2005 10/15/2005 10/22/2005 10/29/2005 11/05/2005Sample Date

Total P (mg/L)SR-REF-MDLGP-13-MDLGP-11-MDLGP-09-MDLGP-06-MDLGP-01-MDFigure 11a. Orthophosphate Phosphorus in Shallow Surface Water00.020.040.060.080.10.12 06/25/2005 07/02/2005 07/09/2005 07/16/2005 07/23/2005 07/30/2005 08/06/2005 08/13/2005 08/20/2005 08/27/2005 09/03/2005 09/10/2005 09/17/2005 09/24/2005 10/01/2005 10/08/2005 10/15/2005 10/22/2005 10/29/2005 11/05/2005Sample Depth

Orthophosphate (mg/L)SR-REF-SCR-REF-SLGP-13-SLGP-11-SLGP-09-SLGP-06-SLGP-01-SFigure 11b. Orthophosphate Phosphorus in Mid-Depth Surface Water00.010.020.030.040.050.060.070.080.090.1 06/25/2005 07/02/2005 07/09/2005 07/16/2005 07/23/2005 07/30/2005 08/06/2005 08/13/2005 08/20/2005 08/27/2005 09/03/2005 09/10/2005 09/17/2005 09/24/2005 10/01/2005 10/08/2005 10/15/2005 10/22/2005 10/29/2005 11/05/2005Sample Date

Orthophosphate (mg/L)SR-REF-MDLGP-13-MDLGP-11-MDLGP-09-MDLGP-06-MDLGP-01-MDFigure 12a. Resin Acids in Receiving Water00.0050.010.0150.020.0250.030.0350.04CR-REF SR REF LGP-14 LGP-13 LGP-11 LGP-09 LGP-06 LGP-01

(ug/L)Abietic AcidDehydroabietic AcidDehydroabietic AcidNeoabietic AcidPalustric AcidPimaric AcidSandaracopimaric AcidTotal 12/14-Chlorodehydroabietic AcidFigure 12b. Resin Acids in Effluent0123456 Abie t ic Ac id D e hyd r oa b ietic Acid Is o pima r ic Acid N e oabie t ic A cid Palu s tric Ac id Pimaric Ac id San d aracop ima r i c A c id

To t a l 1 2 / 1 4 - C h lor o de h y d r o ab ie t ic Ac i d

(ug/L)EFFA - DissolvedEFFA TotalFigure 13a. Phytosterols in Receiving Water00.511.522.533.54CR-REF SR REF LGP-14 LGP-13 LGP-11 LGP-09 LGP-06 LGP-01

(ug/L)B-sitosterolCampesterolStigmastanolStigmasterolReteneFigure 13b. Phytosterols in Effluent01020304050607080B-sitosterol Campesterol Stigmastanol Stigmasterol Retene

(ug/L)EFFA - DissolvedEFFA TotalFigure 14. Quarterly Chloroform Concentrations00.020.040.060.080.10.120.140.160.180.2CR-REF SR-REF LGP-14 LGP-13 LGP-11 LGP-09 LGP-06 LGP-01

(ug/L)Chloroform (ug/L)Figure 15. Quarterly DOC and TOC in Receiving Water02468101214CR-REF SR-REF LGP-14 LGP-13 LGP-11 LGP-09 LGP-06 LGP-01

mg/LDOC (mg/L)TOC (mg/L)Figure 16a. Dioxins in Receiving Water0.00010.0010.010.1110CR-REF SR REF LGP-14 LGP-13 LGP-11 LGP-09 LGP-06 LGP-01

(pg/L)2,3,7,8-TCDD1,2,3,7,8-PeCDD1,2,3,4,7,8-HxCDD1,2,3,6,7,8-HxCDD1,2,3,7,8,9-HxCDD1,2,3,4,6,7,8-HpCDDOCDDFigure 16b. Dioxins in Effluent0.0010.010.111010010002,3,7,8-TCDD 1,2,3,7,8-PeCDD1,2,3,4,7,8-HxCDD1,2,3,6,7,8-HxCDD1,2,3,7,8,9-HxCDD1,2,3,4,6,7,8-HpCDDOCDD

(pg/L)EFFA - Dissolved (pg/L)EFFA Total (pg/g)Figure 17a. Furans in Receiving Water0.0010.010.1CR-REF SR REF LGP-14 LGP-13 LGP-11 LGP-09 LGP-06 LGP-01

(pg/L)2,3,7,8-TCDF1,2,3,7,8-PeCDF2,3,4,7,8-PeCDF1,2,3,4,7,8-HxCDF1,2,3,6,7,8-HxCDF1,2,3,7,8,9-HxCDF2,3,4,6,7,8-HxCDF1,2,3,4,6,7,8-HpCDF1,2,3,4,7,8,9-HpCDFOCDFFigure 17b. Furans in Effluent0.0010.010.1110

2 , 3 , 7 , 8 - TCD F 1 , 2 , 3 , 7 , 8 - PeCD F 2 , 3 , 4 , 7 , 8 - PeCD F

1 , 2 , 3 , 4 , 7 , 8 - Hx C D F

1 , 2 , 3 , 6 , 7 , 8 - Hx C D F

1 , 2 , 3 , 7 , 8 , 9 - Hx C D F 2 , 3 , 4 , 6 , 7 , 8 - Hx C D F

1 , 2 , 3 , 4 , 6 , 7 , 8-HpCD F

1 , 2 , 3 , 4 , 7 , 8 , 9-HpCD F O C D F

(pg/L)EFFA - Dissolved (pg/L)EFFA Total (pg/g)

### Table 1

Coordinates of Sample Locations on the Snake River and Clearwater River.

Potlatch Lewiston Mill

Sample ID Latitude Longitude

CR-REF 46 15.2988 -116 33.51

SR-REF 46 23.247 -117 02.731

LGP-14 46 25.8579 -117 02.4506

LGP-13 46 25.5650 -117 02.5940

LGP-11 46 25.5418 -117 03.9994

LGP-09 46 24.9105 -117 05.4103

LGP-06 46 25.6274 -117 09.5797

LGP-01 46 33.2666 -117 16.5655Table 2Mean Velocity Results from Weekly Receiving Water Monitoring StudyPotlatch Lewiston MillMean Velocity (ft/sec)Sampling DateSR REF CR REF LGP-13 LGP-09 LGP-06 LGP-0107/07/200507/13/20050.23 1.57 0.26 0.55 0.40 0.2907/20/20050.40 1.54 0.18 0.52 0.17 0.1907/27/20050.20 1.77 0.12 0.43 0.29 0.1908/03/20050.19 1.62 0.19 0.26 0.31 0.0908/10/20050.40 1.58 0.17 0.35 0.03 0.1908/17/20050.06 1.39 0.39 0.12 0.17 0.0808/24/20050.23 1.08 0.19 0.20 0.1808/30/20050.33 0.86 0.12 0.14 0.24 0.3109/07/20050.14 0.84 0.14 0.07 0.14 0.0309/14/20050.23 1.27 0.05 0.15 0.15 0.0809/21/20050.18 0.43 0.07 0.16 0.06 0.0209/27/20050.22 0.39 0.13 0.0810/05/20050.28 0.43 0.14 0.16 0.56 0.1810/11/20050.18 0.83 0.09 0.12 0.15 0.2110/19/20050.10 0.50 0.16 0.06 0.13 0.2110/25/20050.22 0.72 0.11 0.09 0.13 0.19Average0.22 1.05 0.16 0.22 0.21 0.16Median0.22 0.97 0.14 0.15 0.16 0.19Min0.06 0.39 0.05 0.06 0.03 0.02Max0.40 1.77 0.39 0.55 0.56 0.31Table 3Mean pH Results from Weekly Receiving Water Monitoring StudyPotlatch Lewiston MillMean pHSampling DateSR REF CR REF LGP-13 LGP-09 LGP-06 LGP-0107/07/2005 8.23 7.81 8.28 8.18 7.92 7.7707/13/20058.56 8.09 8.48 8.29 8.72 8.6807/20/20058.03 7.31 8.20 8.25 8.12 8.1507/27/20058.18 7.61 8.08 8.13 7.97 7.8908/03/20058.07 7.75 8.15 8.37 8.05 7.9108/10/20058.02 7.61 8.13 8.25 8.26 8.1308/17/20058.01 7.83 8.13 8.03 7.87 8.0008/24/20057.97 7.80 8.10 8.30 8.03 7.9708/30/20057.97 7.38 8.10 7.78 7.87 8.1209/07/20058.00 7.94 8.29 7.75 8.09 8.1809/14/20057.72 7.41 8.33 7.86 7.79 7.9809/21/20058.10 7.73 8.21 8.16 8.16 7.9909/27/20057.69 7.95 8.03 7.8410/05/20057.46 7.83 8.04 8.06 7.87 7.6210/11/20058.11 8.11 7.9910/19/20057.96 7.88 8.22 8.22 8.20 8.0510/25/20058.23 8.22 7.56Average8.00 7.73 8.20 8.12 8.08 7.99Median8.01 7.80 8.18 8.16 8.07 7.99Min7.46 7.31 8.04 7.75 7.79 7.56Max8.56 8.09 8.48 8.37 8.72 8.68Table 4Mean Dissolved Oxygen (DO) Results from Weekly Receiving Water Monitoring StudyPotlatch Lewiston MillMean Dissolved Oxygen (mg/L)Sampling DateSR REF CR REF LGP-13 LGP-09 LGP-06 LGP-0107/07/2005 9.2 10.1 9.2 10.1 9.507/13/20057.5 8.0 8.1 9.2 8.9 10.407/20/20057.1 9.2 8.7 9.7 8.4 9.307/27/20057.7 9.3 9.0 9.1 9.1 9.108/03/20057.6 10.3 9.9 10.2 9.4 9.208/10/20056.2 11.0 9.4 9.9 9.4 9.108/17/20058.2 11.0 9.4 10.1 9.6 9.908/24/20058.0 10.6 9.2 9.6 8.9 9.108/30/20058.9 11.3 9.9 10.1 9.6 9.709/07/20058.8 10.0 10.0 10.0 9.5 9.909/14/20059.7 12.3 11.1 10.9 10.1 9.909/21/20059.0 11.2 9.9 9.6 9.9 10.109/27/20059.6 11.5 9.8 9.310/05/200510.4 12.8 10.8 10.7 10.5 9.410/11/200510.3 10.6 9.610/19/20059.8 11.1 10.2 10.0 10.6 9.910/25/20059.9 10.2 9.3Average8.5 10.6 9.6 9.9 9.6 9.6Median8.8 11.0 9.6 10.0 9.5 9.5Min6.2 8.0 8.1 9.1 8.4 9.1Max10.4 12.8 11.1 10.9 10.6 10.4Table 5Mean Temperature Results from Weekly Receiving Water Monitoring StudyPotlatch Lewiston MillMean Temperature (degrees Celsius)Sampling DateSR REF CR REF LGP-13 LGP-09 LGP-06 LGP-0107/07/2005 20.65 14.05 18.90 19.14 19.82 20.0907/13/200521.67 14.44 18.71 18.74 19.18 19.6407/20/200522.52 11.71 16.51 18.38 18.95 19.4207/27/200518.40 11.34 16.10 16.98 17.92 19.0308/03/200522.08 11.15 16.49 16.75 18.21 20.3308/10/200523.09 11.68 16.17 17.49 19.08 19.3908/17/200522.02 10.67 17.27 16.88 17.63 19.4308/24/200521.10 11.57 16.58 18.28 19.12 19.6808/30/200521.26 11.70 16.74 18.16 18.68 19.4509/07/200520.60 11.70 16.53 17.52 17.67 18.7109/14/200519.13 11.55 15.89 15.44 16.25 17.2509/21/200518.31 13.23 17.04 17.61 17.77 17.4009/27/200517.47 12.31 16.60 16.9410/05/200515.34 9.66 14.76 14.71 14.70 15.4910/11/200515.43 15.65 14.38 14.64 14.9310/19/200514.98 10.66 14.86 14.35 14.43 14.5310/25/200514.07 9.78 14.61 14.31 14.41 15.38Average19.30 11.70 16.42 16.81 17.40 18.06Median 20.60 11.62 16.50 16.98 17.85 19.03Min 14.07 9.66 14.61 14.31 14.41 14.53Max 23.09 14.44 18.90 19.14 19.82 20.33Table 6Total Suspended Solids (TSS, mg/L) Results from Weekly Receiving Water Monitoring StudyPotlatch Lewiston MillSampling Date07/07/20058 12 2.5 U 2 3 2.5 12 12 807/13/20057 6 2.5 U 2 3 2.5 7 7 607/20/20052.5 U 2.5 U 2.5 U 0 3 ND ND ND ND07/27/20052.5 U 2.5 U 2.5 U 0 3 ND ND ND ND08/03/20052.5 U 2.5 U 2.5 U 0 3 ND ND ND ND08/10/20052.5 U 2.5 U 2.5 U 0 3 ND ND ND ND08/17/20052.5 U 2.5 U 2.5 U 0 3 ND ND ND ND08/24/20052.5 U 2.5 U 2.5 U 0 3 ND ND ND ND08/30/20052.5 U 2.5 U 2.5 U 0 3 ND ND ND ND09/07/20052.5 U 2.5 U 2.5 U 0 3 ND ND ND ND09/15/20052.5 U 2.5 U 2.5 U 0 3 ND ND ND ND09/21/20052.5 U 2.5 U 2.5 U 0 3 ND ND ND ND09/27/20052.5 U 2.5 U 2.5 U 0 3 ND ND ND ND10/05/20052.5 U 2.5 U 2.5 U 0 3 ND ND ND ND10/11/20052.5 U 2.5 U 2.5 U 0 3 ND ND ND ND10/19/20052.5 U 2.5 U 2.5 U 0 3 ND ND ND ND10/25/20052.5 U 2.5 U 2.5 U 0 3 ND ND ND NDAverage3.088 3.265 2.500Median2.5 2.5 2.5Min2.5 2.5 2.5Max8 12 2.5Samples17 17 17Detects220Sampling DateDetects Samples Minimum Maximum Average Median07/07/20058 7 2.5 U 2.5 U 5 2.5 U 2.5 U 5 2.5 U 65 10 2.5 8 4.35 3.7507/13/20058 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 9 113 10 2.5 11 4.55 2.507/20/20052.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U0 10 ND ND ND ND07/27/20052.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U0 10 ND ND ND ND08/03/20051.25 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U0 10 ND ND ND ND08/10/20051.25 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U0 10 ND ND ND ND08/17/20051.25 U 2.5 U 2.5 U 7 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U1 10 1.25 7 2.825 2.508/24/20051.25 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U0 10 ND ND ND ND08/30/20051.25 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 71 10 1.25 7 2.825 2.509/07/20051.25 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 8 2.5 U1 10 1.25 8 2.925 2.509/15/20051.25 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U0 10 ND ND ND ND09/21/20051.25 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 8 2.5 U1 10 1.25 8 2.925 2.509/27/20051.25 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U0 10 ND ND ND ND10/05/20051.25 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U0 10 ND ND ND ND10/11/20051.25 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U0 10 ND ND ND ND10/19/20052.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U0 10 ND ND ND ND10/25/20052.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 5 2.5 U1 10 2.5 5 2.75 2.5Average2.338 2.765 2.500 2.765 2.647 2.500 2.500 2.647 3.676 3.471Median1.25 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5Min1.25 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5Max8 7 2.5 7 5 2.5 2.5 5 9 11Samples17 17 17 17 17 17 17 17 17 17Detects210110014 3Notes:U indicates undetectedLGP-01-S LGP-01-MDLGP-09-S LGP-09-MD LGP-06-S LGP-06-MDLGP-13-S LGP-13-MD LGP-11-S LGP-11-MDSummary of Downstream SamplesSR-REF-S SR-REF-MD CR-REF-SSummary of Upstream SamplesDetects Samples Minimum Maximum Average MedianTable 7Biochemical Oxygen Demand (BOD, mg/L) Results from Weekly Receiving Water Monitoring StudyPotlatch Lewiston MillSampling Date07/07/20051.2 J 1.2 J 1.7 J 3 3 1.2 1.7 1.7 1.207/13/20051.1 JX 0.8 JX 0.5 JX 3 3 0.5 1.1 1.1 0.807/20/20050.6 JX 0.7 JX 0.7 JX 3 3 0.6 0.7 0.7 0.707/27/20050.25 U 0.25 U 0.25 U 0 3 ND ND ND ND08/03/20050.5 0.6 0.5 3 3 0.5 0.6 0.6 0.508/10/20050.25 U 0.25 U 0.25 U 0 3 ND ND ND ND08/17/20051.3 1.5 0.9 3 3 0.9 1.5 1.5 1.308/24/20050.25 U 0.25 U 0.25 U 0 3 ND ND ND ND08/30/20050.6 0.25 U 0.8 2 3 0.25 0.8 0.8 0.609/07/20050.25 U 0.25 U 0.25 U 0 3 ND ND ND ND09/15/20050.25 U 0.25 U 0.25 U 0 3 ND ND ND ND09/21/20050.25 U 0.25 U 0.25 U 0 3 ND ND ND ND09/27/20051 0.25 U 0.25 U 1 3 0.25 1 1 0.2510/05/20050.9 0.25 U 0.25 U 1 3 0.25 0.9 0.9 0.2510/11/20050.25 U 0.25 U 0.25 U 0 3 ND ND ND ND10/19/20050.25 UX 0.25 UX 0.25 UX 3 3 0.25 0.25 0.25 0.2510/25/20050.25 UX 0.25 UX 0.25 UX 3 3 0.25 0.25 0.25 0.25Average0.556 0.459 0.462Median0.25 0.25 0.25Min0.25 0.25 0.25Max1.3 1.5 1.7Samples17 17 17Detects10 7 8Sampling DateDetects Samples Minimum Maximum Average Median07/07/20051.1 J 1 J 0.9 J 1 J 1 J 1.2 J 0.45 U 0.45 U 1.5 J 1 J8 10 0.45 1.5 0.96 107/13/20051 J 1 J 0.8 J 0.7 J 1.2 J 1 J 1.2 JX 0.8 JX 1.7 JX 1.1 JX10 10 0.7 1.7 1.05 107/20/20050.7 J 0.8 J 0.8 J 1 J 1.1 J 0.8 J 1.3 JX 1.1 JX 1.7 JX 1.1 JX10 10 0.7 1.7 1.04 1.0507/27/20050.25 U 0.6 J 0.6 J 0.6 J 0.25 U 0.25 U 0.25 U 0.25 U 0.6 J 0.25 U4 10 0.25 0.6 0.39 0.2508/03/20050.7 0.25 U 0.7 1 0.7 0.7 1.9 0.25 U 1.5 0.78 10 0.25 1.9 0.84 0.708/10/20050.125 U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0.8 0.25 U1 10 0.125 0.8 0.2925 0.2508/17/20051.5 1.1 1.2 1 1.3 1.4 1 1.2 1.7 1.210 10 1 1.7 1.26 1.208/24/20050.125 U 0.25 U 0.25 U 0.7 0.25 U 0.25 U 0.6 0.25 U 1.3 0.25 U3 10 0.125 1.3 0.4225 0.2508/30/20050.2375 U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0.6 1.1 0.73 10 0.2375 1.1 0.41375 0.2509/07/20050.375 0.25 U 0.25 U 0.5 0.375 0.25 U 1 0.8 7 0.87 10 0.25 7 1.16 0.437509/15/20050.125 U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 3.6 0.25 U1 10 0.125 3.6 0.5725 0.2509/21/20050.125 U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 7 0.62 10 0.125 7 0.9475 0.2509/27/20050.2125 U 0.25 U 0.6 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U1 10 0.2125 0.6 0.28125 0.2510/05/20050.125 U 0.6 0.25 U 0.25 U 0.825 0.25 U 0.6 0.6 0.25 U 0.25 U4 10 0.125 0.825 0.4 0.2510/11/20050.125 U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U0 10 ND ND ND ND10/19/20050.25 U 0.25 U 0.25 UX 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U1 10 0.25 0.25 0.25 0.2510/25/20050.25 U 0.25 U 0.25 UX 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U1 10 0.25 0.25 0.25 0.25Average0.43088240.46176470.47647060.51470590.52941180.47647060.60588240.47352941.80882350.555882353Median0.250 0.250 0.250 0.250 0.250 0.250 0.250 0.250 1.300 0.250Min0.125 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25Max1.5 1.1 1.2 1 1.3 1.4 1.9 1.2 7 1.2Samples17 17 17 17 17 17 17 17 17 17Detects6 6 9 8 7 5 7 6 12 8Notes:U indicates undetectedJ indicates estimated valueX - Holding time exceededSummary of Downstream SamplesSummary of Upstream SamplesDetects Samples Minimum Maximum Average MedianLGP-06-MD LGP-01-S LGP-01-MDLGP-11-MD LGP-09-S LGP-09-MD LGP-06-SSR-REF-S SR-REF-MD CR-REF-SLGP-13-S LGP-13-MD LGP-11-STable 8Ammonia Nitrogen Results (mg/L) from Weekly Receiving Water Monitoring StudyPotlatch Lewiston MillSampling Date07/07/20050.02 J 0.02 J 0.02 J 3 3 0.02 0.02 0.02 0.0207/13/20050.006 J 0.004 J 0.005 J 3 3 0.004 0.006 0.006 0.00507/20/20050.01 U 0.01 U 0.01 U 0 3 ND ND ND ND07/27/20050.01 U 0.01 U 0.01 U 0 3 ND ND ND ND08/03/20050.03 0.03 0.02 3 3 0.02 0.03 0.03 0.0308/10/20050.01 U 0.01 U 0.01 U 0 3 ND ND ND ND08/17/20050.01 U 0.01 U 0.01 U 0 3 ND ND ND ND08/24/20050.02 0.02 0.005 3 3 0.005 0.02 0.02 0.0208/30/20050.01 U 0.01 U 0.01 U 0 3 ND ND ND ND09/07/20050.01 U 0.01 U 0.01 U 0 3 ND ND ND ND09/15/20050.01 U 0.01 U 0.01 U 0 3 ND ND ND ND09/21/20050.01 0.02 0.02 3 3 0.01 0.02 0.02 0.0209/27/20050.03 0.03 0.03 3 3 0.03 0.03 0.03 0.0310/05/20050.01 U 0.01 U 0.01 U 0 3 ND ND ND ND10/11/20050.01 U 0.01 U 0.01 U 0 3 ND ND ND ND10/19/20050.01 U 0.01 U 0.01 U 0 3 ND ND ND ND10/25/20050.01 U 0.01 U 0.01 U 0 3 ND ND ND NDAverage0.013 0.0140.012Median0.01 0.01 0.01Min0.006 0.0040.005Max0.03 0.03 0.03Samples17 17 17Detects666Sampling DateDetects Samples Minimum Maximum Average Median07/07/20050.01 U 0.03 J 0.025 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.02 J 0.02 J3 10 0.01 0.03 0.0155 0.0107/13/20050.02 0.002 U 0.09 0.04 0.008 J 0.008 J 0.01 0.01 0.01 0.049 10 0.002 0.09 0.0238 0.0107/20/20050.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U0 10 ND ND ND ND07/27/20050.11 0.1 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U2 10 0.01 0.11 0.029 0.0108/03/20050.005 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.02 0.03 0.05 0.044 10 0.005 0.05 0.0195 0.0108/10/20050.04 0.04 0.01 U 0.04 0.025 0.01 U 0.02 0.01 U 0.06 0.027 10 0.01 0.06 0.0275 0.022508/17/20050.005 U 0.01 U 0.01 U 0.01 U 0.015 0.05 0.01 U 0.01 U 0.09 0.054 10 0.005 0.09 0.026 0.0108/24/20050.02 0.008 0.01 0.02 0.02 0.02 0.01 0.01 0.05 0.0610 10 0.008 0.06 0.0228 0.0208/30/20050.005 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U0 10 ND ND ND ND09/07/20050.005 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.041 10 0.005 0.04 0.0125 0.0109/15/20050.005 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U1 10 0.005 0.01 0.0095 0.0109/21/20050.025 0.02 0.02 0.03 0.02 0.02 0.01 0.03 0.07 0.0210 10 0.01 0.07 0.0265 0.0209/27/20050.025 0.03 0.03 0.04 0.03 0.04 0.03 0.04 0.03 0.0310 10 0.025 0.04 0.0325 0.0310/05/20050.005 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.04 0.033 10 0.005 0.04 0.0145 0.0110/11/20050.005 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U0 10 ND ND ND ND10/19/20050.01 U 0.01 U 0.01 U 0.02 J 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U1 10 0.01 0.02 0.011 0.0110/25/20050.01 U 0.01 U 0.01 U 0.01 U 0.015 J/U 0.01 U 0.02 J 0.01 U 0.03 J 0.03 J4 10 0.01 0.03 0.0155 0.01Average0.01852940.01941180.01735290.0176471 0.01370590.01517650.01294120.01411760.03058820.025882353Median0.010 0.010 0.010 0.010 0.010 0.010 0.010 0.010 0.020 0.020Min0.005 0.002 0.01 0.01 0.008 0.008 0.01 0.01 0.01 0.01Max0.11 0.1 0.09 0.04 0.03 0.05 0.03 0.04 0.09 0.06Samples17 17 17 17 17 17 17 17 17 17Detects8 6 4 6 7 5 7 5 10 11Notes:U indicates undetectedJ indicates estimated valueLGP-01-S LGP-01-MDLGP-09-S LGP-09-MD LGP-06-S LGP-06-MDSummary of Upstream SamplesDetects Samples Minimum Maximum Average MedianLGP-13-S LGP-13-MD LGP-11-S LGP-11-MDSummary of Downstream SamplesSR-REF-S SR-REF-MD CR-REF-STable 9Nitrate/Nitrite Nitrogen Results (mg/L) from Weekly Receiving Water Monitoring StudyPotlatch Lewiston MillSampling Date07/07/20050.16 0.16 0.02 J 3 3 0.02 0.16 0.16 0.1607/13/20050.11 0.11 0.01 J 3 3 0.01 0.11 0.11 0.1107/20/20050.16 0.22 0.01 J 3 3 0.01 0.22 0.22 0.1607/27/20050.18 0.18 0.009 J 3 3 0.009 0.18 0.18 0.1808/03/20050.27 0.27 0.02 3 3 0.02 0.27 0.27 0.2708/10/20050.34 0.34 0.01 3 3 0.01 0.34 0.34 0.3408/17/20050.32 0.32 0.01 3 3 0.01 0.32 0.32 0.3208/24/20050.38 0.38 0.02 3 3 0.02 0.38 0.38 0.3808/30/20050.4 0.4 0.02 3 3 0.02 0.4 0.4 0.409/07/20050.38 0.38 0.013 3 3 0.013 0.38 0.38 0.3809/15/20050.41 0.4 0.02 3 3 0.02 0.41 0.41 0.409/21/20050.43 0.44 0.012 3 3 0.012 0.44 0.44 0.4309/27/20050.52 0.51 0.017 3 3 0.017 0.52 0.52 0.5110/05/20050.53 0.52 0.035 3 3 0.035 0.53 0.53 0.5210/11/20050.62 0.61 0.0015 U 2 3 0.0015 0.62 0.62 0.6110/19/20050.53 0.53 0.004 J 3 3 0.004 0.53 0.53 0.5310/25/20050.55 0.55 0.009 J 3 3 0.009 0.55 0.55 0.55Average0.370 0.372 0.014Median0.38 0.38 0.012Min0.11 0.11 0.0015Max0.62 0.61 0.035Samples17 17 17Detects17 17 16Sampling DateDetects Samples Minimum Maximum Average Median07/07/20050.17 0.19 0.18 0.17 0.21 0.17 0.18 0.16 0.13 0.1610 10 0.13 0.21 0.172 0.1707/13/20050.13 0.09 0.12 0.14 0.11 0.09 0.07 0.05 J 0.07 0.0510 10 0.05 0.14 0.092 0.0907/20/20050.18 0.09 0.19 0.14 0.175 0.09 0.16 0.1 0.06 0.1210 10 0.06 0.19 0.1305 0.1307/27/20050.16 0.13 0.16 0.09 0.14 0.06 0.12 0.1 0.045 J 0.042 J10 10 0.042 0.16 0.1047 0.1108/03/20050.2 0.12 0.21 0.1 0.19 0.11 0.23 0.16 0.08 0.1310 10 0.08 0.23 0.153 0.14508/10/20050.22 0.12 0.25 0.13 0.245 0.12 0.22 0.15 0.06 0.1710 10 0.06 0.25 0.1685 0.1608/17/20050.26 0.18 0.24 0.14 0.24 0.17 0.23 0.17 0.08 0.1210 10 0.08 0.26 0.183 0.17508/24/20050.315 0.23 0.32 0.22 0.31 0.21 0.28 0.24 0.14 0.1410 10 0.14 0.32 0.2405 0.23508/30/20050.3 0.19 0.31 0.22 0.32 0.23 0.3 0.28 0.17 0.1710 10 0.17 0.32 0.249 0.25509/07/20050.3 0.21 0.32 0.2 0.325 0.19 0.29 0.24 0.1 0.210 10 0.1 0.325 0.2375 0.22509/15/20050.32 0.22 0.34 0.25 0.335 0.23 0.32 0.23 0.2 0.2810 10 0.2 0.34 0.2725 0.26509/21/20050.4 0.34 0.39 0.38 0.39 0.38 0.39 0.37 0.21 0.2610 10 0.21 0.4 0.351 0.3809/27/20050.49 0.49 0.5 0.46 0.485 0.46 0.43 0.41 0.39 0.3710 10 0.37 0.5 0.4485 0.4610/05/20050.57 0.51 0.55 0.52 0.56 0.53 0.49 0.48 0.41 0.4110 10 0.41 0.57 0.503 0.51510/11/20050.57 0.48 0.52 0.45 0.52 0.49 0.47 0.47 0.49 0.4810 10 0.45 0.57 0.494 0.48510/19/20050.52 0.47 0.48 0.44 0.49 0.44 0.43 0.43 0.44 0.4310 10 0.43 0.52 0.457 0.4410/25/20050.53 0.51 0.51 0.45 0.47 0.47 0.46 0.44 0.43 0.4310 10 0.43 0.53 0.47 0.465Average0.3314706 0.2688235 0.3288235 0.2647059 0.3244118 0.2611765 0.2982353 0.2635294 0.2061765 0.233058824Median0.300 0.210 0.320 0.220 0.320 0.210 0.290 0.240 0.140 0.170Min0.13 0.09 0.12 0.09 0.11 0.06 0.07 0.05 0.045 0.042Max0.57 0.51 0.55 0.52 0.56 0.53 0.49 0.48 0.49 0.48Samples17 17 17 17 17 17 17 17 17 17Detects17 17 17 17 17 17 17 17 17 17Notes:J indicates estimated valueSummary of Upstream SamplesDetects Samples Minimum Maximum Average MedianLGP-06-MD LGP-01-S LGP-01-MDSummary of Downstream SamplesLGP-11-MD LGP-09-S LGP-09-MD LGP-06-SSR-REF-S SR-REF-MD CR-REF-SLGP-13-S LGP-13-MD LGP-11-STable 10Total Kjeldahl Nitrogen (TKN, mg/L) Results from Weekly Receiving Water Monitoring StudyPotlatch Lewiston MillSampling Date07/07/20050.4 0.2 0.2 3 3 0.2 0.4 0.4 0.207/13/20050.1 0.1 0.2 3 3 0.1 0.2 0.2 0.107/20/20050.2 0.2 0.2 3 3 0.2 0.2 0.2 0.207/27/20050.2 0.2 0.1 3 3 0.1 0.2 0.2 0.208/03/20050.4 0.3 0.3 3 3 0.3 0.4 0.4 0.308/10/20050.2 0.3 0.3 3 3 0.2 0.3 0.3 0.308/17/20050.2 0.2 0.2 3 3 0.2 0.2 0.2 0.208/24/20050.4 0.4 0.1 3 3 0.1 0.4 0.4 0.408/30/20050.4 0.4 0.4 3 3 0.4 0.4 0.4 0.409/07/20050.3 0.3 0.2 3 3 0.2 0.3 0.3 0.309/15/20050.3 0.3 0.7 3 3 0.3 0.7 0.7 0.309/21/20050.5 0.5 0.6 3 3 0.5 0.6 0.6 0.509/27/20050.3 0.2 0.035 U 2 3 0.035 0.3 0.3 0.210/05/20050.3 0.2 0.2 3 3 0.2 0.3 0.3 0.210/11/20050.2 0.2 0.08 3 3 0.08 0.2 0.2 0.210/19/20050.2 0.035 U 0.2 2 3 0.035 0.2 0.2 0.210/25/20050.4 0.4 0.3 3 3 0.3 0.4 0.4 0.4Average0.294 0.261 0.254Median0.3 0.2 0.2Min0.1 0.035 0.035Max0.5 0.5 0.7Samples17 17 17Detects17 16 16Sampling DateDetects Samples Minimum Maximum Average Median07/07/20050.3 0.2 0.4 0.2 0.2 0.2 0.2 0.2 0.2 0.210 10 0.2 0.4 0.23 0.207/13/20050.2 0.1 0.2 0.2 0.2 0.2 0.2 0.1 0.2 0.110 10 0.1 0.2 0.17 0.207/20/20050.2 0.2 0.2 0.2 0.25 0.2 0.3 0.2 0.3 0.410 10 0.2 0.4 0.245 0.207/27/20050.2 0.2 0.1 0.4 0.2 0.2 0.3 0.2 0.3 0.310 10 0.1 0.4 0.24 0.208/03/20050.45 0.2 0.4 0.4 0.35 0.4 0.4 0.4 0.3 0.410 10 0.2 0.45 0.37 0.408/10/20050.2 0.3 0.2 0.2 0.2 0.035 U 0.3 0.1 0.4 0.29 10 0.035 0.4 0.2135 0.208/17/20050.3 0.5 0.2 0.2 0.25 0.2 0.3 0.2 0.3 0.310 10 0.2 0.5 0.275 0.27508/24/20050.2 0.2 0.3 0.3 0.35 0.5 0.3 0.3 0.3 0.310 10 0.2 0.5 0.305 0.308/30/20050.3 0.5 0.3 0.4 0.45 0.4 0.3 0.6 0.4 0.410 10 0.3 0.6 0.405 0.409/07/20050.35 0.2 0.2 0.2 0.2 0.2 0.3 0.2 0.8 0.310 10 0.2 0.8 0.295 0.209/15/20050.3 0.035 U 0.2 0.2 0.1675 0.1 0.2 0.1 0.6 0.49 10 0.035 0.6 0.23025 0.209/21/20050.45 0.4 0.3 0.5 0.35 0.2 0.5 0.7 1.5 0.510 10 0.2 1.5 0.54 0.47509/27/20050.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.210 10 0.2 0.2 0.2 0.210/05/20050.3 0.3 0.3 0.2 0.2 0.2 0.2 0.2 0.3 0.210 10 0.2 0.3 0.24 0.210/11/20050.2 0.4 0.035 U 0.1 0.15 0.2 0.3 0.3 0.4 0.39 10 0.035 0.4 0.2385 0.2510/19/20050.2 0.3 0.2 0.1 0.3 0.2 0.2 0.2 0.3 0.110 10 0.1 0.3 0.21 0.210/25/20050.2 0.4 0.3 0.3 0.5 0.9 0.3 0.4 0.6 0.510 10 0.2 0.9 0.44 0.4Average0.268 0.273 0.237 0.253 0.266 0.267 0.282 0.271 0.435 0.300Median0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 0.3 0.3Min0.2 0.035 0.035 0.1 0.15 0.035 0.2 0.1 0.2 0.1Max0.45 0.5 0.4 0.5 0.5 0.9 0.5 0.7 1.5 0.5Samples17 17 17 17 17 17 17 17 17 17Detects17 16 16 17 17 16 17 17 17 17Notes:U indicates undetectedLGP-01-MDSummary of Downstream SamplesLGP-06-SAverage MedianLGP-06-MD LGP-01-SLGP-11-MDSamplesLGP-09-SMinimumLGP-09-MDLGP-13-S LGP-13-MDCR-REF-SLGP-11-SSummary of Upstream SamplesSR-REF-S SR-REF-MD Detects MaximumTable 11Total Phosphorus Results (mg/L) from Weekly Receiving Water Monitoring StudyPotlatch Lewiston MillSampling Date07/07/20050.04 0.04 0.01 3 3 0.01 0.04 0.04 0.0407/13/20050.04 0.04 0.02 3 3 0.02 0.04 0.04 0.0407/20/20050.04 0.04 0.02 3 3 0.02 0.04 0.04 0.0407/27/20050.04 0.04 0.007 J 3 3 0.007 0.04 0.04 0.0408/03/20050.06 0.06 0.007 3 3 0.007 0.06 0.06 0.0608/10/20050.06 0.07 0.009 3 3 0.009 0.07 0.07 0.0608/17/20050.06 0.06 0.008 3 3 0.008 0.06 0.06 0.0608/24/20050.08 0.08 0.01 3 3 0.01 0.08 0.08 0.0808/30/20050.08 0.09 0.009 3 3 0.009 0.09 0.09 0.0809/07/20050.09 0.08 0.01 3 3 0.01 0.09 0.09 0.0809/15/20050.08 0.08 0.007 3 3 0.007 0.08 0.08 0.0809/21/20050.08 0.08 0.0025 U 2 3 0.0025 0.08 0.08 0.0809/27/20050.1 0.1 0.005 3 3 0.005 0.1 0.1 0.110/05/20050.09 0.12 0.006 3 3 0.006 0.12 0.12 0.0910/11/20050.1 0.09 0.0025 U 2 3 0.0025 0.1 0.1 0.0910/19/20050.09 0.09 0.0025 U 2 3 0.0025 0.09 0.09 0.0910/25/20050.07 0.07 0.008 J 3 3 0.008 0.07 0.07 0.07Average0.071 0.072 0.008Median0.08 0.08 0.008Min0.04 0.04 0.0025Max0.1 0.12 0.02Samples17 17 17Detects17 17 14Sampling DateDetects Samples Minimum Maximum Average Median07/07/20050.04 0.04 0.03 0.04 0.04 0.04 0.03 0.05 0.03 0.0410 10 0.03 0.05 0.038 0.0407/13/20050.03 0.03 0.05 0.03 0.02 0.04 0.04 0.03 0.03 0.0310 10 0.02 0.05 0.033 0.0307/20/20050.04 0.02 0.03 0.04 0.04 0.03 0.04 0.03 0.05 0.0410 10 0.02 0.05 0.036 0.0407/27/20050.04 0.03 0.03 0.03 0.04 0.03 0.03 0.03 0.03 0.0310 10 0.03 0.04 0.032 0.0308/03/20050.05 0.03 0.05 0.03 0.04 0.03 0.05 0.04 0.04 0.0410 10 0.03 0.05 0.04 0.0408/10/20050.05 0.03 0.06 0.04 0.055 0.05 0.05 0.04 0.05 0.0410 10 0.03 0.06 0.0465 0.0508/17/20050.05 0.04 0.06 0.04 0.05 0.04 0.05 0.04 0.05 0.0610 10 0.04 0.06 0.048 0.0508/24/20050.06 0.05 0.07 0.06 0.065 0.06 0.06 0.06 0.06 0.0610 10 0.05 0.07 0.0605 0.0608/30/20050.07 0.05 0.07 0.05 0.07 0.05 0.07 0.07 0.06 0.0610 10 0.05 0.07 0.062 0.06509/07/20050.07 0.06 0.08 0.06 0.07 0.05 0.07 0.06 0.09 0.0610 10 0.05 0.09 0.067 0.06509/15/20050.065 0.05 0.07 0.06 0.075 0.06 0.06 0.05 0.07 0.0610 10 0.05 0.075 0.062 0.0609/21/20050.085 0.07 0.08 0.08 0.08 0.07 0.07 0.07 0.13 0.0610 10 0.06 0.13 0.0795 0.07509/27/20050.1 0.1 0.1 0.1 0.1 0.1 0.09 0.09 0.09 0.0910 10 0.09 0.1 0.096 0.110/05/20050.11 0.09 0.09 0.09 0.105 0.09 0.09 0.08 0.08 0.0810 10 0.08 0.11 0.0905 0.0910/11/20050.11 0.1 0.11 0.09 0.12 0.11 0.11 0.08 0.1 0.110 10 0.08 0.12 0.103 0.10510/19/20050.09 0.09 0.1 0.07 0.105 0.07 0.05 0.08 0.1 0.0610 10 0.05 0.105 0.0815 0.08510/25/20050.08 0.07 0.07 0.06 0.085 0.07 0.07 0.07 0.07 0.0710 10 0.06 0.085 0.0715 0.07Average0.067 0.056 0.068 0.057 0.068 0.058 0.061 0.057 0.066 0.058Median0.065 0.05 0.07 0.06 0.07 0.05 0.06 0.06 0.06 0.06Min0.03 0.02 0.03 0.03 0.02 0.03 0.03 0.03 0.03 0.03Max0.11 0.1 0.11 0.1 0.12 0.11 0.11 0.09 0.13 0.1Samples17 17 17 17 17 17 17 17 17 17Detects17 17 17 17 17 17 17 17 17 17Notes:U indicates undetectedJ indicates estimated valueLGP-01-S LGP-01-MDLGP-09-S LGP-09-MD LGP-06-S LGP-06-MDLGP-13-S LGP-13-MD LGP-11-S LGP-11-MDSummary of Downstream SamplesSR-REF-S SR-REF-MD CR-REF-SSummary of Upstream SamplesDetects Samples Minimum Maximum Average MedianTable 12Orthophosphate Phosphorus Results (mg/L) from Weekly Receiving Water Monitoring StudyPotlatch Lewiston MillSampling Date07/07/20050.02 0.02 0.006 J 3 3 0.006 0.02 0.02 0.0207/13/20050.01 0.02 0.01 3 3 0.01 0.02 0.02 0.0107/20/20050.03 0.02 0.003 J 3 3 0.003 0.03 0.03 0.0207/27/20050.03 0.03 0.006 J 3 3 0.006 0.03 0.03 0.0308/03/20050.04 0.04 0.003 3 3 0.003 0.04 0.04 0.0408/10/20050.05 0.05 0.002 3 3 0.002 0.05 0.05 0.0508/17/20050.05 0.05 0.002 3 3 0.002 0.05 0.05 0.0508/24/20050.06 0.06 0.005 3 3 0.005 0.06 0.06 0.0608/30/20050.07 0.08 0.004 3 3 0.004 0.08 0.08 0.0709/07/20050.07 0.07 0.005 3 3 0.005 0.07 0.07 0.0709/15/20050.07 0.07 0.001 U 2 3 0.001 0.07 0.07 0.0709/21/20050.07 0.07 0.007 3 3 0.007 0.07 0.07 0.0709/27/20050.09 0.09 0.007 3 3 0.007 0.09 0.09 0.0910/05/20050.07 0.08 0.007 3 3 0.007 0.08 0.08 0.0710/11/20050.09 0.08 0.001 U 2 3 0.001 0.09 0.09 0.0810/19/20050.07 X 0.06 X 0.001 U 2 3 0.001 0.07 0.07 0.0610/25/20050.07 X 0.06 X 0.006 JX 3 3 0.006 0.07 0.07 0.06Average0.056 0.056 0.004Median0.07 0.06 0.005Min0.01 0.02 0.001Max0.09 0.09 0.01Samples17 17 17Detects17 17 14Sampling DateDetects Samples Minimum Maximum Average Median07/07/20050.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.01 0.0110 10 0.01 0.02 0.018 0.0207/13/20050.02 0.01 0.01 0.02 0.01 0.02 0.01 0.009 J 0.01 X 0.01 X10 10 0.009 0.02 0.0129 0.0107/20/20050.03 0.01 0.02 0.02 0.02 0.01 0.02 0.01 0.01 0.0110 10 0.01 0.03 0.016 0.01507/27/20050.03 0.02 0.03 0.02 0.03 0.02 0.02 0.02 0.01 0.0210 10 0.01 0.03 0.022 0.0208/03/20050.04 0.02 0.03 0.02 0.03 0.02 0.03 0.03 0.02 0.0210 10 0.02 0.04 0.026 0.02508/10/20050.04 0.02 0.05 0.03 0.04 0.03 0.04 0.03 0.02 0.0310 10 0.02 0.05 0.033 0.0308/17/20050.04 0.03 0.04 0.03 0.04 0.03 0.04 0.03 0.02 0.0310 10 0.02 0.04 0.033 0.0308/24/20050.05 0.04 0.05 0.04 0.05 0.04 0.05 0.05 0.04 0.0410 10 0.04 0.05 0.045 0.04508/30/20050.055 0.04 0.06 0.04 0.06 0.04 0.06 0.05 0.05 0.0410 10 0.04 0.06 0.0495 0.0509/07/20050.06 0.05 0.07 0.05 0.06 0.04 0.06 0.05 0.03 0.0510 10 0.03 0.07 0.052 0.0509/15/20050.06 0.04 0.06 0.05 0.065 0.05 0.05 0.04 0.06 0.0510 10 0.04 0.065 0.0525 0.0509/21/20050.07 0.06 0.07 0.07 0.07 0.06 0.06 0.06 0.01 0.0510 10 0.01 0.07 0.058 0.0609/27/20050.09 0.085 0.09 0.09 0.09 0.08 0.08 0.08 0.08 0.0810 10 0.08 0.09 0.0845 0.082510/05/20050.08 0.08 0.08 0.08 0.095 0.08 0.07 0.07 0.07 0.0710 10 0.07 0.095 0.0775 0.0810/11/20050.09 0.07 0.08 0.06 0.1 0.09 0.1 0.06 0.08 0.0910 10 0.06 0.1 0.082 0.08510/19/20050.07 0.07 0.08 0.07 0.07 0.06 0.05 0.07 0.08 0.0610 10 0.05 0.08 0.068 0.0710/25/20050.06 0.04 0.06 X 0.06 X 0.055 0.04 0.05 0.05 0.04 0.0510 10 0.04 0.06 0.0505 0.05Average0.053 0.041 0.053 0.045 0.053 0.043 0.048 0.043 0.038 0.042Median0.055 0.04 0.06 0.04 0.055 0.04 0.05 0.05 0.03 0.04Min0.02 0.01 0.01 0.02 0.01 0.01 0.01 0.009 0.01 0.01Max0.09 0.085 0.09 0.09 0.1 0.09 0.1 0.08 0.08 0.09Samples17 17 17 17 17 17 17 17 17 17Detects17 17 17 17 17 17 17 17 17 17Notes:U indicates undetectedJ indicates estimated valueX - Holding time exceededLGP-01-S LGP-01-MDLGP-09-S LGP-09-MD LGP-06-S LGP-06-MDLGP-13-S LGP-13-MD LGP-11-S LGP-11-MDSummary of Downstream SamplesSR-REF-S SR-REF-MD CR-REF-SSummary of Upstream SamplesDetects Samples Minimum Maximum Average MedianTable 132,3,7,8-TCDD Results (pg/L) from Weekly Receiving Water Monitoring StudyPotlatch Lewiston MillSampling Date07/07/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND07/13/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND07/20/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND07/27/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND08/03/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND08/10/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND08/17/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND08/24/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND08/30/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND09/07/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND09/15/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND09/21/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND09/27/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND10/05/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND10/11/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND10/19/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND10/25/20050.2 U 0.2 U 0.2 U 0 3 ND ND ND NDAverage0.482 0.482 0.482Median0.5 0.5 0.5Min0.2 0.2 0.2Max0.5 0.5 0.5Samples17 17 17Detects000Sampling DateDetects Samples Minimum Maximum Average Median07/07/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND07/13/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND07/20/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND07/27/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND08/03/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND08/10/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND08/17/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND08/24/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND08/30/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND09/07/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND09/15/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND09/21/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND09/27/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND10/05/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND10/11/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND10/19/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND10/25/20050.2 U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U0 10 ND ND ND NDAverage0.482 0.482 0.482 0.482 0.482 0.482 0.482 0.482 0.482 0.482Median0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5Min0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2Max0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5Samples17 17 17 17 17 17 17 17 17 17Detects000000000 0Notes:U indicates undetectedJ indicates estimated valueLGP-01-S LGP-01-MDLGP-09-S LGP-09-MD LGP-06-S LGP-06-MDLGP-13-S LGP-13-MD LGP-11-S LGP-11-MDSummary of Downstream SamplesSR-REF-S SR-REF-MD CR-REF-SSummary of Upstream SamplesDetects Samples Minimum Maximum Average MedianTable 142,3,7,8-TCDF Results (pg/L) from Weekly Receiving Water Monitoring StudyPotlatch Lewiston MillSampling Date07/07/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND07/13/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND07/20/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND07/27/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND08/03/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND08/10/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND08/17/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND08/24/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND08/30/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND09/07/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND09/15/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND09/21/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND09/27/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND10/05/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND10/11/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND10/19/20050.5 U 0.5 U 0.5 U 0 3 ND ND ND ND10/25/20050.2 U 0.2 U 0.2 U 0 3 ND ND ND NDAverage0.482 0.482 0.482Median0.5 0.5 0.5Min0.2 0.2 0.2Max0.5 0.5 0.5Samples17 17 17Detects000Sampling DateDetects Samples Minimum Maximum Average Median07/07/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND07/13/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND07/20/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND07/27/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND08/03/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND08/10/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND08/17/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND08/24/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND08/30/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND09/07/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND09/15/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND09/21/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND09/27/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND10/05/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND10/11/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND10/19/20050.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U0 10 ND ND ND ND10/25/20050.2 U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U0 10 ND ND ND NDAverage0.482 0.482 0.482 0.482 0.482 0.482 0.482 0.482 0.482 0.482Median0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5Min0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2Max0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5Samples17 17 17 17 17 17 17 17 17 17Detects000000000 0Notes:U indicates undetectedJ indicates estimated valueSummary of Upstream SamplesDetects Samples Minimum Maximum Average MedianSummary of Downstream SamplesSR-REF-S SR-REF-MD CR-REF-SLGP-13-S LGP-13-MD LGP-11-S LGP-11-MDLGP-01-S LGP-01-MDLGP-09-S LGP-09-MD LGP-06-S LGP-06-MDTable 15Resin Acid Results from the Quarterly Surface Water and Effluent Monitoring StudyPotlatch Lewiston MillResin Acids (ug/L)Detects Samples Minimum Maximum Average MedianAbietic Acid 0.021 J 0.009 J 0.021 J 0.0265 J 0.021 J 0.035 J 0.034 J 0.02 J8 8 0.009 0.035 0.0234375 0.0210.373 5.08Dehydroabietic Acid 0.011 U 0.0085 U 0.011 U 0.01475 U 0.0105 U 0.013 U 0.013 U 0.011 U0 8 ND ND ND ND0.044 U 0.47Isopimaric Acid 0.003 J 0.002 J 0.0015 U 0.00225 U 0.003 J 0.006 J 0.005 J 0.003 J6 8 0.0015 0.006 0.00321875 0.0030.074 J 2.56Neoabietic Acid 0.01485 U 0.015 U 0.01485 U 0.0146 U 0.01485 U 0.01485 U 0.01485 U 0.0147 U0 8 ND ND ND ND0.006 J 0.063 JPalustric Acid 0.0005 U 0.01965 U 0.0195 U 0.0005 U 0.0005 U 0.001 U 0.0005 U 0.0193 U0 8 ND ND ND ND0.009 U 0.1415 UPimaric Acid 0.001 U 0.001 U 0.001 U 0.002 U 0.001 U 0.002 U 0.002 U 0.0015 U0 8 ND ND ND ND0.064 J 3.15Sandaracopimaric Acid 0.0005 U 0.02655 U 0.0005 U 0.0005 U 0.0005 U 0.0005 U 0.0005 U 0.0005 U0 8 ND ND ND ND0.015 J 0.124Total 12/14-Chlorodehydroabietic Acid 0.0275 U 0.02775 U 0.0275 U 0.02725 U 0.0275 U 0.0275 U 0.0275 U 0.02725 U0 8 ND ND ND ND0.028 J 0.08 JNotes:U indicates undetectedJ indicates estimated valueSR REFCR-REFLGP-09LGP-11LGP-13LGP-14EFFA TotalEFFA - DissolvedLGP-01LGP-06Table 16Phytosterol Results from the Quarterly Surface Water and Effluent Monitoring StudyPotlatch Lewiston MillPhytosterols (ug/L)Detects Samples Minimum Maximum AverageMedianB-sitosterol 0.46 J 0.563 J 1.36 J 1.1985 J 0.632 J 0.679 J 0.596 J 3.398 8 0.46 3.39 1.1098130.65624.2 68.3Campesterol 0.038 J 0.05 J 0.059 J 0.0635 J 0.044 J 0.054 J 0.046 J 0.278 8 0.038 0.27 0.0780630.0521.41 4.45Stigmastanol 0.3441 U 0.3474 U 0.3441 U 0.34575 U 0.3441 U 0.3441 U 0.3441 U 0.3441 U0 8 ND ND ND ND3.96 9.5Stigmasterol 0.034 U 0.06 J 0.076 J 0.082 J 0.06 J 0.07 J 0.062 J 0.3317 8 0.0340.331 0.0968750.0660.584 3.18Retene 0.0005 U 0.0005 U 0.0015 U 0.0015 U 0.0025 U 0.0005 U 0.0005 U 0.001 U0 8 ND ND ND ND0.003 U 0.005 UNotes:U indicates undetectedJ indicates estimated valueEFFA - Dissolved EFFA TotalLGP-11 LGP-09 LGP-06 LGP-01CR-REF SR REF LGP-14 LGP-13Figure 17Chlorophenol Results from the Quarterly Surface Water and Effluent Monitoring StudyPotlatch Lewiston MillChlorophenolicsDetects Samples Minimum Maximum Average Median2,4,6-Trichlorophenol 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U0 10 ND ND ND ND0.0505 U 0.0545 U2,4,5-Trichlorophenol 0.0002 U 0.0002 U 0.0005 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U0 10 ND ND ND ND0.0002 U 0.0002 U2,3,4,6-Tetrachlorophenol 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U0 10 ND ND ND ND0.0002 U 0.0002 U3,4,6-Trichlorocatechol 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U0 10 ND ND ND ND0.0002 U 0.0002 U3,4,5-Trichlorocatechol 0.0002 U 0.0002 U 0.0002 U 0.00085 U 0.004 U 0.0025 U 0.0002 U 0.0002 U0 10 ND ND ND ND0.116 U 0.3375 U3,4,6-Trichoroguaiacol 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U0 10 ND ND ND ND0.0075 U 0.0035 U3,4,5-Trichloroguaiacol 0.0005 U 0.0003 U 0.0003 U 0.0003 U 0.0005 U 0.0003 U 0.0005 U 0.0003 U0 10 ND ND ND ND0.0155 U 0.0255 UTrichlorosyringol 0.001 U 0.0005 U 0.0005 U 0.0005 U 0.0015 U 0.001 U 0.001 U 0.001 U0 10 ND ND ND ND0.004 U 0.0035 U4,5,6-Trichloroguaiacol 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0005 U 0.0002 U0 10 ND ND ND ND0.0145 U 0.0525 UPentachlorophenol 0.002 U 0.002 U 0.002 U 0.0015 U 0.0015 U 0.002 U 0.003 U 0.002 U0 10 ND ND ND ND0.0002 U 0.0002 UTetrachloroguaiacol 0.00145 U 0.0014 U 0.0014 U 0.0014 U 0.0014 U 0.0014 U 0.0014 U 0.0014 U0 10 ND ND ND ND0.002 U 0.00145 UTetrachlorocatechol 0.0003 U 0.0003 U 0.0003 U 0.0003 U 0.0003 U 0.0003 U 0.002 U 0.0003 U0 10 ND ND ND ND0.0003 U 0.0003 UNotes:U indicates undetectedCR-REF SR REF LGP-14 LGP-13EFFA - Dissolved EFFA TotalLGP-11 LGP-09 LGP-06 LGP-01Table 18Chloroform Results from the Quarterly Surface Water and Effluent Monitoring StudyPotlatch Lewiston MillDetects Samples Minimum MaximumAverageMedianChloroform (ug/L) 0.07 U 0.07 U 0.07 U 0.07 U 0.07 U 0.07 U 0.07 U 0.19 J 1.08 2 9 0.07 1.08 0.195556 0.07Notes:U indicates undetectedJ indicates estimated valueCR-REF SR REF LGP-14 LGP-13EFFALGP-11 LGP-09 LGP-06 LGP-01Table 19Dissolved Organic Carbon (DOC) and Total Organic Carbon (TOC) Results from the Quarterly Surface Water and Effluent MonitoringStudyPotlatch Lewiston MillDetects Samples Minimum MaximumAverageMedianDOC (mg/L) 1.9 2.7 2.5 2.5 11.8 2.6 2.8 3.1 125 9 9 1.9 125 17.21111 2.7TOC (mg/L) 2.1 2.8 2.9 2.6 2.8 2.9 2.9 2.9 150 9 9 2.1 150 19.1 2.9CR-REF SR REF LGP-14 LGP-13EFFALGP-11 LGP-09 LGP-06 LGP-01Table 20Dioxin and Furan Congener Results from the Quarterly Surface Water and Effluent Monitoring StudyPotlatch Lewiston MillCongenerDetects Samples Minimum Maximum AverageMedian2,3,7,8-TCDD 0.00125 U 0.00125 U 0.00125 U 0.022 0.00125 U 0.00125 U 0.00125 U 0.00125 U1 8 0.001 0.022 0.0040.0010.0015 U 0.28981481 U1,2,3,7,8-PeCDD 0.00125 U 0.00125 U 0.00125 U 0.051 J 0.00125 U 0.00125 U 0.002125 0.00125 U2 8 0.001 0.051 0.008 0.0010.00125 U 1.740740741,2,3,4,7,8-HxCDD 0.003 J 0.003 J 0.003 J 0.008 J 0.002 U 0.003 J 0.0025 0.00125 U6 8 0.001 0.008 0.003 0.0030.003 J 1.01851852 U1,2,3,6,7,8-HxCDD 0.002 U 0.0075 U 0.016 J 0.04 J 0.007 J 0.011 J 0.006 U 0.012 J5 8 0.002 0.040 0.013 0.0090.002 U 1.41666667 U1,2,3,7,8,9-HxCDD 0.004 J 0.011 J 0.011 J 0.038 J 0.007 J 0.007 J 0.0085 0.008 J8 8 0.0040.038 0.012 0.0080.003 J 1.55555556 U1,2,3,4,6,7,8-HpCDD 0.056 J 0.214 0.186 0.151 0.128 0.203 0.148 0.2668 8 0.056 0.266 0.169 0.1690.0215 U 21.6666667OCDD 0.307 0.81 0.902 0.478 0.748 1.01 0.8505 1.668 8 0.307 1.660 0.846 0.8300.0795 U 124.4444442,3,7,8-TCDF 0.00125 U 0.002 U 0.006 J 0.006 J 0.006 J 0.005 J 0.005 0.004 J6 8 0.001 0.006 0.0040.0050.025 9.055555561,2,3,7,8-PeCDF 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0.003 0.00125 U1 8 0.001 0.003 0.001 0.0010.005 J 2.592592592,3,4,7,8-PeCDF 0.00125 U 0.00125 U 0.0015 U 0.003 J 0.003 J 0.003 J 0.0015 U 0.00125 U3 8 0.001 0.003 0.002 0.0020.003 J 2.851851851,2,3,4,7,8-HxCDF 0.00125 U 0.0025 U 0.006 J 0.0015 U 0.005 J 0.004 J 0.004 0.0015 U4 8 0.001 0.006 0.003 0.0030.0015 U 1.24074074 U1,2,3,6,7,8-HxCDF 0.00125 U 0.0015 U 0.003 J 0.00125 U 0.004 J 0.003 J 0.0035 0.00125 U4 8 0.001 0.0040.002 0.0020.00125 U 1.01851852 U1,2,3,7,8,9-HxCDF 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0.00125 U0 8 ND ND ND ND0.00125 U 1.15740741 U2,3,4,6,7,8-HxCDF 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0.002125 0.00125 U1 8 0.001 0.002 0.001 0.0010.00125 U 0.86296296 U1,2,3,4,6,7,8-HpCDF 0.006 J 0.018 J 0.028 J 0.007 U 0.018 J 0.022 J 0.025 0.03 J7 8 0.006 0.030 0.019 0.0200.003 J 4.870370371,2,3,4,7,8,9-HpCDF 0.00125 U 0.00125 U 0.00125 U 0.00125 U 0.003 J 0.00125 U 0.001375 U 0.00125 U1 8 0.001 0.003 0.001 0.0010.00125 U 0.82685185 UOCDF 0.011 J 0.02 J 0.026 J 0.007 J 0.024 J 0.037 J 0.0375 0.045 J8 8 0.007 0.045 0.026 0.0250.003 J 5.2962963Notes:U indicates undetectedJ indicates estimated valueSR REF LGP-14 LGP-13EFFA - Dissolved (pg/L)EFFA Total (pg/g)Furans (pg/L)Dioxins (pg/L)LGP-11 LGP-09 LGP-06 LGP-01CR-REF

# HIGH VOLUME QUARTERLY STUDY

SAMPLING AND ANALYSIS REPORT

POTLATCH NPDES PERMIT RENEWAL

COMPLIANCE MONITORING

Prepared for

Potlatch Corporation

Lewiston, Idaho



## Prepared by

Anchor Environmental, L.L.C.

1423 Third Avenue, Suite 300

Seattle, Washington 98101



## January 2008

# HIGH VOLUME QUARTERLY STUDY

SAMPLING AND ANALYSIS REPORT

POTLATCH NPDES PERMIT RENEWAL

COMPLIANCE MONITORING

Prepared for

Potlatch Corporation

Lewiston, Idaho



## Prepared by

Anchor Environmental, L.L.C.

1423 Third Avenue, Suite 300

Seattle, Washington 98101



## January 2008

### Table of Contents

1 INTRODUCTION................................................................................................................................ 1

1.1 Background................................................................................................................................. 1

1.2 Document Organization and Focus......................................................................................... 2

2 HIGH VOLUME FIELD SAMPLING METHODS.......................................................................... 3

2.1 Synopsis of Field Activities....................................................................................................... 3

2.1.1 QA/QC samples ................................................................................................................... 4

2.2 Overview of Field Methods...................................................................................................... 4

2.3 Sampling Deviations from the QAPP ..................................................................................... 4

3 HIGH VOLUME ANALYTICAL METHODS ................................................................................. 5

3.1 Sample Analysis ......................................................................................................................... 5

3.2 Data Validation........................................................................................................................... 5

3.3 Analytical Deviations from the QAPP .................................................................................... 6

4 ANALYTICAL RESULTS AND COMPARISON WITH BENCHMARK CRITERIA................ 9

4.1 Results.......................................................................................................................................... 9

4.1.1 Resin Acids ......................................................................................................................... 1 0

4.1.2 Phytosterols ................................................................................................................... ..... 11

4.1.3 Chloroform ..................................................................................................................... .... 11

4.1.4 Total and Dissolved and Organic Carbon...................................................................... 11

4.1.5 Dioxin/Furan Congeners................................................................................................... 12

4.1.6 Retene ......................................................................................................................... ......... 12

4.1.7 Chlorinated Phenols .......................................................................................................... 12

5 SUMMARY........................................................................................................................ ................. 14

6 REFERENCES ..................................................................................................................... ............... 15

List of Tables

Table 1 Summary of Analytical Results and Comparison with Benchmark Criteria

–

March 2007 Sampling Episode

Table 2 Summary of Analytical Results and Comparison with Benchmark Criteria

– June

2007 Sampling Episode

Table 3 Summary of Chemical and Conventional Analyses

Table 4 Statistical Summary of High Volume Water Sample Results by Analyte

List of Figures

Figure 1 Vicinity Map

Figure 2 Approximate Locations of High Volume Water Sampling Stations

High Volume Quarterly Study Sampling and Analysis Report January 2008

Potlatch NPDES Permit Renewal Compliance Monitoring i 050297

‐ 01

### Table of Contents

List of Appendices

Appendix A Chain

‐ of

‐ custody Forms and Laboratory Data Reports

Appendix B Data Validation Reports

High Volume Quarterly Study Sampling and Analysis Report January 2008

Potlatch NPDES Permit Renewal Compliance Monitoring ii 050297

‐ 01Introduction



## 1 INTRODUCTION

This section provides a brief background of the purpose for conducting high volume sampling

and analysis, describes the studies that were conducted, and outlines the contents of the

remainder of this report.

1.1 Background

In accordance with renewal of a National Pollutant Discharge Elimination System (NPDES)

Permit granting Authorization to Discharge (EPA 2005), Potlatch Corporation was required

to conduct monitoring studies in the vicinity and downstream of Outfall 001 associated with

Potlatch’s pulp and paper mill (Mill) in Lewiston, Idaho (Figure 1). The goal of the

monitoring program was to support the effort to characterize the potential effects of

discharges from Potlatch’s mill to the Clearwater and Snake Rivers on endangered and

listed species and the environment.

The purpose of this report is to present the results of Endangered Species Act (ESA) Tier 1

studies undertaken during 2007 that evaluate effluent and natural waters above and below

the Mill. In particular, this sampling was performed to fulfill requirements of the Surface

Water and Effluent Study that are described in detail in Appendix A and Appendix H,

respectively, of the Quality Assurance Project Plan (QAPP) for Tier 1 Endangered Species Act and

NPDES Permit Compliance Monitoring (AMEC and Anchor 2005).

The Surface Water and Effluent Study principally addresses the measurement of trace

organic compounds and dioxins/furans (some of which are required for compliance with the

NPDES permit). To do this, a specialized sampling technique known as high volume

sampling was employed. High volume water sampling allows for a large volume of site

water to be sampled and concentrated on different media for different constituents while

reporting these constituents at trace levels. The high volume sampler is a water sampling

system capable of sampling 2 liters per minute. Samples are pushed through a pre

‐ cleaned

glass

‐ wound cartridge filter via a peristaltic pump. The pre

‐ filter removes the suspended

particulates in the water. The effluent then passes through a stainless steel tube containing

the polyurethane foam (PUF), which collects the dissolved

‐ phase constituents. Both the

filter and the PUF are used for dioxin/furan analysis. Sample for analysis for the additional

parameters were collected via the high volume water sampler by bypassing all filters and

High Volume Quarterly Study Sampling and Analysis Report January 2008

Potlatch NPDES Permit Renewal Compliance Monitoring 1 050297

‐ 01Introduction



### pumping directly into the sample bottles. The study used an upstream/downstream study

design, and the stations that were selected and sampled during the 2007 sampling event are

shown on Figure 2.

1.2 Document Organization and Focus

Section 2 describes the field effort for the collection and analysis of high volume samples.

This section is meant to be a summary rather than a detailed account of the field activities.

Section 3 presents aspects related to chemical analysis of samples and data validation.

Section 4 summarizes the results and offers comparison with benchmark criteria. Section 5

is a brief, overall summary of the field activities and analytical results. Section 6 contains

references.

The focus of this report is on data, data quality, and comparisons to criteria determined

from the analytical results. The QAPP (AMEC and Anchor 2005) provides additional detail

on the design, implementation, and testing associated with the sampling program.

High Volume Quarterly Study Sampling and Analysis Report January 2008

Potlatch NPDES Permit Renewal Compliance Monitoring 2 050297

‐ 01High Volume Field Sampling Methods



## 2 HIGH VOLUME FIELD SAMPLING METHODS

This section provides an overview of information specific to the collection of high volume

samples as required by the Mill’s permit (EPA 2005).

2.1 Synopsis of Field Activities

First round quarterly sampling for the monitoring program was conducted in August 2005,

and the second round was conducted in November 2005. Sampling for the 2006 quarterly

monitoring was conducted in March (third round), June (fourth round), September (fifth

round), and November (sixth round). Sampling for 2007 quarterly monitoring period was

conducted in March (seventh round) and June (eighth round). This report covers only the

2007 sampling events; results from previous sampling events were previously reported. As

specified in the NPDES permit, the eighth round of sampling completed the required high

volume study.

Locations for collection of the high volume samples were chosen to coincide with sample

stations from prior sediment and receiving water monitoring activities and to provide

spatial representation of the study area (See Figure 2). Sampling areas were located at two

upstream reference locations and at six locations distributed between the Potlatch Mill

discharge and the Lower Granite Dam. A final sample was collected directly from the

Potlatch effluent.

Field

‐ measured water quality data and water samples for water quality analyses were

collected at each sample location on the Snake River and Clearwater River at mid

‐ depth.

Effluent samples were taken at the Mill’s aeration basin. All high

‐ volume samples were

collected using a high volume water sampler. Other samples were collected using either the

high

‐ volume pump system or a Niskin Grab Sampler.

The sampling methods used in the field closely followed those described in the Sampling and

Analysis Plan for Surface Water and Effluent Study (Appendix A of the QAPP; AMEC and

Anchor 2005). Deviations from the original method were documented in the 2006 data

summary report and were also followed through in the 2007 sampling period.

Samples were shipped to the laboratories once all samples were collected.

High Volume Quarterly Study Sampling and Analysis Report January 2008

Potlatch NPDES Permit Renewal Compliance Monitoring 3 050297

‐ 01High Volume Field Sampling Methods



### 2.1.1 QA/QC samples

Three types of samples were collected for quality control: trip blanks, field blanks, and

field duplicates. A set of trip blanks (sample vials filled with ultrapure lab water)

accompanied sample bottles to and from the field. One equipment blank was collected

during each sampling event. All sampling equipment was decontaminated according to

methods described in the QAPP (AMEC and Anchor 2005) and then rinsed with

ultrapure lab water. This rinsate was then sampled to produce the equipment blank.

2.2 Overview of Field Methods

Field sampling was conducted from a jet boat equipped with an onboard Differential Global

Positioning System (DGPS), which provided navigation support for finding sampling

locations and recording the actual locations occupied. For transport to the laboratory,

sample coolers were packed with ice to ensure maintenance of cold temperatures. Coolers

were shipped to the laboratories under standard chain

‐ of

‐ custody procedures.

2.3 Sampling Deviations from the QAPP

Deviations from the QAPP (AMEC and Anchor 2005) are documented below for the 2007

year sampling events:

• 

### In some cases, more than one sample was collected in a day. The QAPP (AMEC and

Anchor 2005) indicated only one sample per day would be collected.

• 

### The QAPP (AMEC and Anchor 2005) indicates that the high volume sampling

technique will utilize XAD resin as the collection media. The 2007 sampling events

used PUF material in the columns, which was approved after consultation with EPA.

• 

### Resin acids, retene, beta

‐ sitosterol, chloroform, chlorinated phenols, and

conventional samples collected in conjunction with the June 6, 7, and 8, 2007

dioxin/furan samples were received by the laboratory outside allowable cooler

temperatures. Samples shipped for Saturday delivery were delivered on Monday

morning because of aircraft mechanical problems. Fresh samples were collected on

June 21, 2007 and forwarded with no incidents to the laboratory.

High Volume Quarterly Study Sampling and Analysis Report January 2008

Potlatch NPDES Permit Renewal Compliance Monitoring 4 050297

‐ 01High Volume Analytical Methods



## 3 HIGH VOLUME ANALYTICAL METHODS

High volume sample analysis was conducted in accordance with Appendix H of the QAPP

(AMEC and Anchor 2005). Guidance included specification of methods, method detection

limits, and applicable QA/QC measures. Complete details are included in the QAPP (AMEC

and Anchor 2005).

3.1 Sample Analysis

Two laboratories were used to perform the chemical analyses on the high volume water

samples. Analytical Perspectives (AP) was responsible for the dioxin and furan analysis

while Columbia Analytical Services (CAS) conducted the analyses for the resin acids; retene;

beta

‐ sitosterol, and phenol analyses. AP is located in Wilmington, North Carolina, and CAS

is located in Kelso, Washington. Both laboratories are accredited under the National

Environmental Laboratories Accreditation Program (NELAP). Appendix A contains

electronic files for chain

‐ of

‐ custody forms and all laboratory data reports.

3.2 Data Validation

Data validation was performed by Laboratory Data Consultants, Inc. (LDC), located in

Carlsbad, California. A full data validation was performed in accordance with guidance

provided in the following documents:

• 

### Quality Assurance Project Plan for Endangered Species Act Monitoring and NPDES Permit

Compliance Monitoring (AMEC and Anchor 2005)

• 

### EPA Functional Guidelines for Organic and Inorganic Data

, October 2004 and 1999

• 

### EPA Functional Guidelines for the Validation of Polychlorinated Dibenzodioxin (PCDD)

and Polychlorinated Dibenzofuran (PCDF) Data

, 1996

• 

### EPA Functional Guidelines for the Validation of Inorganic Analyses

Each data package was reviewed initially against chain

‐ of

‐ custody forms to ensure that the

requested analyses were performed. Requirements for each analytical parameter were

reviewed to ensure the technical holding time was met for both the extraction and analytical

requirements. Results were reviewed to assess target compound identification, compound

quantification and calculations, and achievement of compound quantitation limits. Field

blanks were reviewed for possible contamination issues. All initial and continuing

calibrations were reviewed for method compliance. All surrogates, method blanks, internal

High Volume Quarterly Study Sampling and Analysis Report January 2008

Potlatch NPDES Permit Renewal Compliance Monitoring 5 050297

‐ 01High Volume Analytical Methods



### standards, instrument performance checks, method blank(s), matrix spikes, laboratory

control samples, and system performance checks were performed at the required frequency

and within specified QAPP (AMEC and Anchor 2005) and method criteria. Field duplicates

were checked for consistency and compliance with relative percent difference (RPD) criteria.

Any omitted or discrepant data were resubmitted to the respective laboratory for

clarification and re

‐ analysis, if needed. Any sample or standard data not meeting the

guidelines in the documents listed above were flagged and qualified accordingly. All

discrepancies were tabulated and described in the validation reports. Copies of the

qualified sample data sheets with flags are also contained in the validation reports.

Appendix B contains all data validation reports.

All data presented in this report were considered useable as qualified from the validation

reports. Tables 2 and 3 contain data with the appropriate data validation qualifiers, where

applicable. Copies of all laboratory analytical reports can be found in Appendix A.

3.3 Analytical Deviations from the QAPP

The QAPP (AMEC and Anchor 2005) identified the laboratory to be used for dioxin/furan

analysis for the high volume water analyses as AXYS Laboratory (AXYS). AP replaced

AXYS as the dioxin/furan laboratory. Two data reports were generated by AP for the

dioxin/furan analysis of the high volume water samples. The data were reported under AP

reports P7609 and P7923. There were no deviations noted for these analyses. LDC, the

validation firm, noted in their narrative that the compound quantitation and contract

required control limits (CRQLs) for 2,3,7,8

‐ TCDF were not reported using second column

confirmation as required by the analytical method. The AP laboratory report indicates that

they use a modified DB

‐ 5 MS column, where each calibration sequence is evaluated by their

chemist to show that the method criteria for resolution is met for both 2,3,7,8

‐ TCDD and

2,3,7,8

‐ TCDF. For Method 1613 samples, this evaluation is an integral part of AP’s ongoing

precision and accuracy (OPR) analysis. All 17 specific 2,3,7,8

‐ isomers and their close eluters

for TCDD and TCDF can be resolved in a single analysis. As method 1613 allows for the use

of alternative columns that meet the resolution requirements as a means to forgo the second

column confirmation, this requirement was met by AP’s analytical procedures and the data

reported without qualification.

High Volume Quarterly Study Sampling and Analysis Report January 2008

Potlatch NPDES Permit Renewal Compliance Monitoring 6 050297

‐ 01High Volume Analytical Methods



### The QAPP (AMEC and Anchor 2005) identified the laboratory to be used for chlorophenols,

resin acids, chloroform, phytosterols, retenes, and general chemistry as AXYS. For the 2007

sampling events, CAS replaced AXYS as the laboratory performing these analyses. The

change from AXYS to CAS resulted in a change to the analyte list as several analytes

identified in the QAPP for resin acids and phytosterols are not reported in the current 2007

results. The change resulted in four resin acids being excluded (sandaracopimaric acid,

palustric acid, neobietic acid, and total 12/14 chlorodehdroabietic acid). Three phytosterols

were also excluded in the current analyte list (campesterol, stigmastanol, and stigmasterol).

At the time of the change of laboratories in 2006, CAS did not have current method

detection limits (MDLs) for the missing analytes and had never analyzed the analytes

before. The EPA was notified of the change in laboratories, as well as the change in analyte

lists, in 2006.

Two data reports for the high volume water analyses were generated by CAS. The CAS

data reports are identified as K0701767 and K0705381. The following deviations occurred in

the CAS reports for the high volume water sampling events:

• 

### Total suspended solids

- 

### SR

‐ REF

‐ SW

‐ A was analyzed one day outside the technical holding time. Sample

CR

‐ REF

‐ SW

‐ A was analyzed two days outside the holding time. Data were

qualified accordingly. (CAS report K0701767).

• 

### Total organic carbon (TOC)/dissolved organic carbon (DOC)

- 

### The field blank contained low level hits for TOC (0.030 milligrams per liter

[mg/L]) and DOC (0.12 mg/L).

• 

### Resin acids

- 

### The reporting limit used in previous reports as reported by AXYS Laboratory

was below 1 microgram per liter ( μ g/L), CAS reporting limits were 20 μ g/L,

which is higher than the requested benchmark of 2.2 μ g/L.

- 

### 3,4,5

‐ trichloroguaiacol percent difference (%D) in the continuing calibration was

outside the method criteria (CAS report K0701767). Data were qualified

accordingly.

High Volume Quarterly Study Sampling and Analysis Report January 2008

Potlatch NPDES Permit Renewal Compliance Monitoring 7 050297

‐ 01High Volume Analytical Methods

- 

### Several sample surrogate percent recoveries (%R) were outside the QAPP

‐

specified control limits the data was qualified accordingly. Both laboratory

reports were impacted.

- 

### The matrix spike duplicate (MSD) %R was outside the QAPP

‐ specified control

limits for dehydrabietic acid, 9,10

‐ dichlorostearic acid, and 14

‐

chlorodehydroabietic acid. The sample was qualified accordingly (CAS report

K0705381).

- 

### The Laboratory Control Sample (LCS) for linoleic acid, isopimaric acid, and

abietic acid %R were low, and these data were qualified accordingly (CAS report

K0701767). Dehyroabietic acid %R was high in the LCS for CAS report

K0705381). Data were qualified accordingly.

• 

### Retene

- 

### Samples reported in CAS report K0705381 were reported using a raised reporting

limit of 1 μ g/L due to laboratory error. Sample holding times had already

expired when the error was detected at the laboratory.

- 

### Sample SR

‐ REF

‐ SW

‐ A was analyzed two days outside the holding time, and

sample CR

‐ REF

‐ SW

‐ A was analyzed three days outside the holding time. These

data were qualified accordingly (CAS report K0701767).

• 

### Beta

‐ Sitosterol

- 

### Sample SR

‐ REF

‐ SW

‐ A was analyzed one day outside the technical holding time,

and sample CR

‐ REF

‐ SW

‐ A was analyzed two days outside the holding time.

These data were qualified accordingly (CAS K071767).

- 

### The initial calibration relative response factor (RRF) for this analytes was low,

and the continuing calibration RRF was also outside method criteria. These data

were qualified accordingly (CAS K071767).

- 

### Surrogate %R was low and outside the QAPP (AMEC and Anchor 2005) criteria

in samples LGP2

‐ EFF

‐ AQ

‐ A and LGP2

‐ EFF

‐ AQ

‐ D. These data were qualified

accordingly (CAS K071767).

- 

### The MS and MSD %R was low and outside QAPP (AMEC and Anchor 2005)

criteria, and the sample results were qualified (CAS K071767).

- 

### The LCS %R was low in both data reports. These data were qualified

accordingly.

High Volume Quarterly Study Sampling and Analysis Report January 2008

Potlatch NPDES Permit Renewal Compliance Monitoring 8 050297

‐ 01Analytical Results and Comparison with Benchmark Criteria



## 4 ANALYTICAL RESULTS AND COMPARI SON WITH BEN CHMARK CRITERIA

4.1 Results

This section reports the results of the 2007 Quarterly Surface Water and Effluent Study.

Data are listed in these tables for:

• 

### Clearwater River reference location (CR REF)

• 

### Snake River reference location (SR REF)

• 

### Lower Granite Pool Effluent location (LGP EFF)

Locations downstream of the outfall from nearest to farthest:

• 

### LGP

‐ 13 (Sample LGP

‐ 05)

• 

### LGP

‐ 11 (Sample LGP

‐ 04)

• 

### LGP

‐ 09 (Sample LGP

‐ 03)

• 

### LGP

‐ 06 (Sample LGP

‐ 02)

• 

### LGP

‐ 01 (Sample LGP

‐ 01)

Quarterly results are summarized by chemical group, then by quarter in chronological order

(March 2007 and June, 2007). The results for the June re

‐ sampling (June 21, 2007) follow the

original sample date of June 6, 2007. Tabulated results are presented separately for March

(Table 1) and June (Table 2). Parameters with non

‐ detectable concentrations were

represented by the detection limit. If an analyte was not detectable across all sites, it was

considered not present and thus not evaluated further. Table 3, the data summary table,

shows the comparison of both quarters’ high volume water data with the toxicity

benchmarks using the sample station and parameter list. The statistical presentation of

these data can be found in Table 4. Tables 1 and 2 provide the results discussed in the

following subsections.

Toxicity equivalency factors (TEFs) were calculated for all dioxin/furan congeners. The total

concentrations for each dioxin or furan congener detected in each sample was multiplied by

its respective TEF using the World Health Organization (WHO) (Van den Berg et al 1998)

value. The results for each congener were expressed in terms of 2,3,7,8

‐ TCDD equivalents

(TEQs). A sum of the individual congener TEQs was calculated for each sample to

determine the TEQ concentration for that sample. In the verification step (database

calculation versus manual calculations were compared to the laboratory’s calculation), a

High Volume Quarterly Study Sampling and Analysis Report January 2008

Potlatch NPDES Permit Renewal Compliance Monitoring 9 050297

‐ 01Analytical Results and Comparison with Benchmark Criteria



### discrepancy was noted in the TEF reported in permit ID000116

‐ 3 Attachment A (page A5

‐

12) with WHO

‐ reported TEFs. The discrepancies were:

Congener Permit TEF WHO TEF

1,2,3,4,7,8

‐ HxCDD 0.5 0.1

1,2,3,6,7,8

‐ HxCDD 0.01 0.1

1,2,3,7,8,9

‐ HxCDD 0.01 0.1

1,2,3,4,6,7,8

‐ HpCDD 0.001 0.01

All calculations were made using the WHO TEF values.

4.1.1 Resin Acids

All detection limits reported were above the 2.2 μ g/L water column benchmark. The

laboratory reporting limit for this analysis was 20 μ g/L. Twenty samples were collected

with six of the samples having reportable concentrations.

March 2007

All reporting limits were above the water column benchmark criteria. Non

‐ detect

results were reported at a reporting limit of 20 μ g/L, which negated the ability to

evaluate these data against the toxicity benchmark. LGP2

‐ EFF

‐ AQ

‐ A and its duplicate

(

‐ D) sample showed detectable amounts of linoleic acid (59 μ g/L and 17 μ g/L

respectively). Oleic acid/linolenic acid (23 μ g/L) and dehydroabietic acid (13 μ g/L) were

only detected in the primary sample.

June 2007

All reporting limits were above the water column benchmark criteria. Non

‐ detect

results were reported at a reporting limit of 20 μ g/L, which negated the ability to

evaluate these data against the toxicity benchmark. Four samples contained detectable

concentrations of resin acids. LGP2

‐ 01

‐ A

‐ 070621, LGP2

‐ 02

‐ 070621, and LGP2

‐ SR

‐ REF

‐

070621 had detectable amounts of linoleic acid (4.0 μ g/L, 4.4 μ g/L, and 13 μ g/L

respectively). Sample LGP2

‐ EFF

‐ 070621 contained linoleic acid (54 μ g/L), oleic

acid/linolenic acid (74 μ g/L), pimaric acid (4.2 μg/L ), isopimaric acid (13 μ g/L),

dehydroabietic acid (9.3 μ g/L), and abietic acid (11 μ g/L).

High Volume Quarterly Study Sampling and Analysis Report January 2008

Potlatch NPDES Permit Renewal Compliance Monitoring 10 050297

‐ 01Analytical Results and Comparison with Benchmark Criteria



### 4.1.2 Phytosterols

The water column benchmark for phytosterols is 2.5 μ g/L.

March 2007

Two samples had reported concentrations above the water column benchmark. The

samples were LGP2

‐ EFF

‐ AQ

‐ A

‐ 070302 and its duplicate LGP2

‐ EFF

‐ AQ

‐ D

‐ 070302 (7.8

μ g/L and 4.5 μ g/L, respectively).

June 2007

One sample, LGP2

‐ EFF

‐ 070621 (11 μ g/L), exceeded the water column benchmark.

4.1.3 Chloroform

The water column benchmark for chloroform is 12.4 μ g/L.

March 2007

All sample results were below the water column benchmark.

June 2007

All sample results were below the water column benchmark.

4.1.4 Total and Dissolved and Organic Carbon

March 2007

There are no water column benchmarks established for the TOC and DOC analyses.

TOC results ranged from 2.3 to 143 milligrams per liter (mg/L). DOC results ranged

from 2.1 to 111 mg/L.

June 2007

There are no water column benchmarks established for the TOC and DOC analyses.

TOC results ranged from 0.12 to 112 mg/L. DOC results ranged from 0.3 to 97.6 mg/L.

High Volume Quarterly Study Sampling and Analysis Report January 2008

Potlatch NPDES Permit Renewal Compliance Monitoring 11 050297

‐ 01Analytical Results and Comparison with Benchmark Criteria



### 4.1.5 Dioxin/Furan Congeners

Tables 1 and 2 present the tabulated results for dioxin congeners. Water column

benchmarks exist for only two of the dioxin/furan congeners. The benchmark for 2,3,7,8

‐

TCDD is 0.06 pg/L and for 2,3,7,8

‐ TCDF is 0.20 pg/L.

March 2007

Reported concentrations were below the water column benchmarks for those

compounds with benchmarks. Sixty

‐ one of the 306 detectable results were for

dioxin/furan congeners.

June 2007

Reported results were below the water column benchmarks for those compounds with

benchmarks. Fifty

‐ eight of the 306 detectable results were for dioxin/furan congeners.

4.1.6 Retene

The water column benchmark for retene is 3.2 μ g/L.

March 2007

All samples were non

‐ detect for retene. The non

‐ detect results were below the water

column benchmark for all samples.

June 2007

All sample results were non

‐ detect; however due to laboratory error, the reporting limit

was raised to 1 μ g/L, which remained below the water column benchmark.

4.1.7 Chlorinated Phenols

Tables 1 and 2 present the tabulated results for chlorophenolics. The water column

benchmarks ranged from 0.18 to 11 μ g/L and are listed for each analyte in the tables.

March 2007

Two samples contained detectable concentrations of chlorophenolics. The samples were

LGP2

‐ EFF

‐ AQ

‐ A

‐ 070302 and its duplicate LGP2

‐ EFF

‐ AQ_D

‐ 070302. The reported

results were below the water column benchmarks.

High Volume Quarterly Study Sampling and Analysis Report January 2008

Potlatch NPDES Permit Renewal Compliance Monitoring 12 050297

‐ 01Analytical Results and Comparison with Benchmark Criteria



### June 2007

One sample contained detectable concentrations for chlorophenolics. The sample was

LGP2

‐ EFF

‐ 070621. The reported results were below the water column benchmarks.

High Volume Quarterly Study Sampling and Analysis Report January 2008

Potlatch NPDES Permit Renewal Compliance Monitoring 13 050297

‐ 01Summary



## 5 SUMMARY

This report presents the results of sampling conducted during 2007 to complete the Quarterly

Surface Water and Effluent Study both part of the Tier 1 ESA Monitoring and NPDES Permit

Compliance Monitoring required in non

‐ discretionary terms and conditions set forth by the

Services in their Biological Opinions on the re

‐ issuance of Potlatch’s NPDES permit by EPA.

Surface water and effluent data were collected to monitor the water quality at:

• 

### Two reference locations (Snake River upstream of the effluent and the Clearwater River

upstream of the confluence with the Snake River)

• 

### Six locations in the Snake River, downstream of the Potlatch effluent during quarterly

monitoring.

All measurements from the 2007 monitoring complied with toxicity benchmarks and applicable

water quality standards with the exception of the resin acids. Due to laboratory error, the

detection limits reported for the resin acids were above the water column benchmark criteria.

The resin acids were reported at 20 μ g/L, while the water column benchmark for this analyte is

2.2 μ g/L.

In conclusion, the results of sampling and analysis upstream and downstream of the Facility are

consistent with the finding in EPA’s Biological Evaluation and the Services’ Biological Opinions

that the EPA’s re

‐ issuance of Potlatch’s NPDES permit is not likely to jeopardize the continued

existence of Snake River steelhead, Snake River spring/summer and fall Chinook salmon, and

Snake River sockeye salmon, nor result in the destruction or adverse modification of designated

critical habitat for Snake River spring/summer and fall Chinook salmon and Snake River

sockeye salmon.

High Volume Quarterly Study Sampling and Analysis Report January 2008

Potlatch NPDES Permit Renewal Compliance Monitoring 14 050297

‐ 01References



## 6 REFERENCES

AMEC Earth and Environmental, Inc. (AMEC) and Anchor Environmental (Anchor). 2005.

Quality Assurance Project Plan for Endangered Species Act Monitoring and NPDES

Permit Compliance Monitoring. Potlatch Corporation Lewiston Facility. May 2005.

Davidson, T. 2007. Email from Toni Davidson of USFWS to Ali Wick of Anchor Environmental

L.L.C. January 31, 2007. Subject: Re: Potlatch caged bivalve study option.

EPA. 2003. Biological Evaluation of the Potlatch Corporation Pulp and Paper Mill in Lewiston,

Idaho. December 2003.

EPA. 199 9. USEPA Contract Laboratory Program National Functional Guidelines for Organic Data

Review. EPA

‐ 540/R

‐ 99

‐ 008 (PB99

‐ 963506). October 1999

EPA. 2004. EPA’s Monitoring and Assessment Plan for Exposure and Effects of Effluents from

the Potlatch Pulp and Paper Mill to ESA Listed Salmonids and their Habitats. U.S.

Environmental Protection Agency, Region 10, Seattle, Washington. March 1, 2004.

EPA. 2004

. USEPA Contract Laboratory Program National Functional Guidelines for Inorganic Data

Review. OSWER 9240.1

‐ 45. EPA 540

‐ R

‐ 04

‐ 004. October 2004

EPA. 2005. USEPA Contract Laboratory Program National Functional Guidelines for Chlorinated

Dioxin/Furan Data Review. EPA

‐ 540

‐ R

‐ 05

‐ 001. September 2005

EPA. 2005. Authorization to Discharge Under the National Pollutant Discharge Elimination

System. Permit No.: ID0001163. Potlatch Corporation 803 Mill Road, Lewiston, Idaho.

U.S. Environmental Protection Agency, Region 10, Seattle, Washington.

Mebane, C. 2007. Personal communication (phone call) between Chris Mebane of NMFS and

Shawn Hinz of Anchor Environmental L.L.C. December 2006.

National Oceanic and Atmospheric Administration Fisheries Service (NOAA Fisheries). 2004.

Endangered Species Act Section 7 Consultation Biological Opinion and Magnuson

‐

High Volume Quarterly Study Sampling and Analysis Report January 2008

Potlatch NPDES Permit Renewal Compliance Monitoring 15 050297

‐ 01References



### Stevens Fishery Conservation and Management Act Essential Fish Habitat Consultation.

April 2004.

Van den Berg, Martin, et. al. 1998. “Toxic Equivalency Factors (TEFs) for PCBs, PCDDs, PCDFs

for Humans and Wildlife.” Environmental Health Perspectives. Volume 106, Number

12, December 1998.

High Volume Quarterly Study Sampling and Analysis Report January 2008

Potlatch NPDES Permit Renewal Compliance Monitoring 16 050297

‐ 01

# TABLESTable 1Summary of Analytical Results and Comparison with Benchmark Criteria – March 2007 Sampling EpisodeSampling Category 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersSample Location Water CR-REF CR-REF LGP-01 LGP-01 LGP-01 LGP-01 LGP-02Sample Identification Column CR-REF-SW-A FILTER-070226 CR-REF-SW-A-070226 LGP2-01-SW-A FILTER-070302 LGP2-01-SW-A-070302 LGP2-01-SW-DFILTER-070302 LGP2-01-SW-D-070302 LGP2-02-SW-A FILTER-070301Sample Date Benchmark 2/26/2007 2/26/2007 3/2/2007 3/2/2007 3/2/2007 3/2/2007 3/1/2007Sample Matrix μg/L W W W W W W WConventionals (mg/L)Dissolved organic carbon --3.0--2.6--2.4--Total organic carbon --3.0--2.8--2.8--Total suspended solids -- 5 UJ -- 5 U -- 5 U --Dioxin/Furans (pg/L)2,3,7,8-TCDD 0.06 0.00114 U 0.00162 U 0.00143 U 0.00171 U 0.00165 U 0.00108 U 0.00199 U1,2,3,7,8-PeCDD 0.00224 U 0.00907 U0.00699 J0.00362 U 0.00672 U 0.0162 U 0.00279 U1,2,3,4,7,8-HxCDD 0.00391 U 0.00354 U0.0148 J0.00474 U 0.00507 U 0.00214 U 0.00514 U1,2,3,6,7,8-HxCDD 0.00625 U 0.00357 U0.0377 J0.00486 U 0.00625 U 0.00211 U 0.00625 U1,2,3,7,8,9-HxCDD 0.00625 U 0.00368 U0.0287 J0.0049 U 0.00625 U 0.00218 U 0.00528 U1,2,3,4,6,7,8-HpCDD0.0829 0.016 J 0.33 0.00853 J 0.103 0.0142 J 0.106OCDD0.635 0.0834 J 1.04 0.0676 J 1.09 0.0656 J 0.7322,3,7,8-TCDF 0.20 0.00185 U0.00174 J0.00412 UJ 0.00183 U0.003 J 0.00172 J0.00159 U1,2,3,7,8-PeCDF 0.00624 U 0.00302 U0.0113 J0.00162 U 0.00625 U 0.00216 U 0.00566 U2,3,4,7,8-PeCDF 0.00543 U 0.00284 U0.0232 J0.00143 U 0.00223 U 0.00206 U 0.00539 U1,2,3,4,7,8-HxCDF 0.00625 U 0.00625 U0.0374 J0.00625 U 0.00625 U 0.000954 U 0.000693 U1,2,3,6,7,8-HxCDF 0.00625 U 0.00625 U0.0497 J0.00625 U 0.00625 U 0.00625 U 0.000594 U2,3,4,6,7,8-HxCDF 0.00625 U 0.00625 U0.07250.0013 U 0.00625 U 0.00625 U 0.000665 U1,2,3,7,8,9-HxCDF 0.000827 U 0.00113 U0.0249 J0.00625 U 0.00113 U 0.00122 U 0.000781 U1,2,3,4,6,7,8-HpCDF0.0173 J0.00625 U0.182 0.0097 J 0.0148 J0.00625 U0.0122 J1,2,3,4,7,8,9-HpCDF 0.00163 U 0.00321 U0.06680.00625 U 0.00199 U 0.00132 U 0.00256 UOCDF0.0404 J0.0125 U0.33 J 0.184 0.0338 J0.0125 U0.0244 JTotal Dioxin/Furan0.776 0.101 2.26 0.27 1.24 0.0815 0.875Total Dioxin/Furan TEQ 1998 (Bird)0.000323 0.00176 0.0608 0.000131 0.00336 0.00174 0.000304Total Dioxin/Furan TEQ 1998 (Fish)0.000323 0.000111 0.0488 0.000131 0.000513 0.000107 0.000304Total Dioxin/Furan TEQ 1998 (Mammal) 90.00107 0.000342 0.0521 0.000207 0.00159 0.000321 0.00126Total Dioxin/Furan TEQ (Bird)0.000323 0.00176 0.0608 0.000131 0.00336 0.00174 0.000304Total Dioxin/Furan TEQ (Fish)0.000323 0.000111 0.0488 0.000131 0.000513 0.000107 0.000304Total Dioxin/Furan TEQ (Mammal)0.0012 0.000359 0.0475 0.000258 0.00182 0.000334 0.00141Resin Acids (μg/L)1.03,4,5-Trichloroguaiacol -- 20 UJ -- 20 UJ -- 20 UJ --Tetrachloroguaiacol -- 20 UJ -- 20 U -- 20 U --Linoleic Acid -- 20 UJ -- 20 UJ -- 20 UJ --Oleic Acid/Linolenic Acid -- 20 UJ -- 20 U -- 20 U --Pimaric acid -- 20 UJ -- 20 U -- 20 U --Isopimaric acid -- 20 UJ -- 20 UJ -- 20 UJ --Dehydroabietic acid -- 20 UJ -- 20 U -- 20 U --Abietic acid -- 20 UJ -- 20 UJ -- 20 UJ --9,10-Dichlorostearic Acid -- 20 UJ -- 20 U -- 20 U --14-Chlorodehydroabietic acid -- 20 UJ -- 20 U -- 20 U --12-Chlorodehydroabietic acid -- 20 UJ -- 20 U -- 20 U --Dichlorodehydroabietic acid -- 20 UJ -- 20 U -- 20 U --Phenols (μg/L)2,4,5-Trichlorophenol 3.4 -- 0.005 U -- 0.005 U -- 0.005 U --2,4,6-Trichlorophenol 7.3 -- 0.005 U -- 0.005 U -- 0.005 U --2,3,4,6-Tetrachlorophenol 3.3 -- 0.005 U -- 0.005 U -- 0.005 U --Pentachlorophenol 0.18 -- 0.01 U -- 0.01 U -- 0.01 U --3,4,5-Trichloroguaiacol 3.4 -- 0.005 U -- 0.005 U -- 0.005 U --HighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring1of6January2008050297‐01Table 1Summary of Analytical Results and Comparison with Benchmark Criteria – March 2007 Sampling EpisodeSampling Category 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersSample Location Water CR-REF CR-REF LGP-01 LGP-01 LGP-01 LGP-01 LGP-02Sample Identification Column CR-REF-SW-A FILTER-070226 CR-REF-SW-A-070226 LGP2-01-SW-A FILTER-070302 LGP2-01-SW-A-070302 LGP2-01-SW-DFILTER-070302 LGP2-01-SW-D-070302 LGP2-02-SW-A FILTER-070301Sample Date Benchmark 2/26/2007 2/26/2007 3/2/2007 3/2/2007 3/2/2007 3/2/2007 3/1/2007Sample Matrix μg/L W W W W W W W3,4,6-Trichloroguaiacol 3.4 -- 0.005 U -- 0.005 U -- 0.005 U --4,5,6-Trichloroguaiacol 11 -- 0.005 U -- 0.005 U -- 0.005 U --Tetrachloroguaiacol 7.5 -- 0.01 U -- 0.01 U -- 0.01 U --3,4,5-Trichlorocatechol 3.4 -- 0.01 U -- 0.01 U -- 0.01 U --3,4,6-Trichlorocatechol 3.4 -- 0.01 U -- 0.01 U -- 0.01 U --Tetrachlorocatechol 2.0 -- 0.01 U -- 0.01 U -- 0.01 U --Trichlorosyringol 3.4 -- 0.005 U -- 0.005 U -- 0.005 U --Chlorophenols toxic unit sumRetene (μg/L)Retene 0.5 -- 0.05 UJ -- 0.059 U -- 0.052 U --beta-Sitosterol (μg/L)beta-Sitosterol 1.0 -- 0.54 UJ --0.29 J--0.5 J--VOCs (μg/L)Chloroform 12.4 -- 0.5 U -- 0.5 U -- 0.5 U --HighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring2of6January2008050297‐01Table 1Summary of Analytical Results and Comparison with Benchmark Criteria – March 2007 Sampling EpisodeSampling CategorySample LocationSample IdentificationSample DateSample MatrixConventionals (mg/L)Dissolved organic carbonTotal organic carbonTotal suspended solidsDioxin/Furans (pg/L)2,3,7,8-TCDD1,2,3,7,8-PeCDD1,2,3,4,7,8-HxCDD1,2,3,6,7,8-HxCDD1,2,3,7,8,9-HxCDD1,2,3,4,6,7,8-HpCDDOCDD2,3,7,8-TCDF1,2,3,7,8-PeCDF2,3,4,7,8-PeCDF1,2,3,4,7,8-HxCDF1,2,3,6,7,8-HxCDF2,3,4,6,7,8-HxCDF1,2,3,7,8,9-HxCDF1,2,3,4,6,7,8-HpCDF1,2,3,4,7,8,9-HpCDFOCDFTotal Dioxin/FuranTotal Dioxin/Furan TEQ 1998 (Bird)Total Dioxin/Furan TEQ 1998 (Fish)Total Dioxin/Furan TEQ 1998 (Mammal)Total Dioxin/Furan TEQ (Bird)Total Dioxin/Furan TEQ (Fish)Total Dioxin/Furan TEQ (Mammal)Resin Acids (μg/L)3,4,5-TrichloroguaiacolTetrachloroguaiacolLinoleic AcidOleic Acid/Linolenic AcidPimaric acidIsopimaric acidDehydroabietic acidAbietic acid9,10-Dichlorostearic Acid14-Chlorodehydroabietic acid12-Chlorodehydroabietic acidDichlorodehydroabietic acidPhenols (μg/L)2,4,5-Trichlorophenol2,4,6-Trichlorophenol2,3,4,6-TetrachlorophenolPentachlorophenol3,4,5-Trichloroguaiacol2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersLGP-02 LGP-03 LGP-03 LGP-04 LGP-04 LGP-05 LGP-05LGP2-02-SW-A-070301 LGP2-03-SW-A FILTER-070301 LGP2-03-SW-A-070301 LGP2-04-SW-A FILTER-070228 LGP2-04-SW-A-070302 LGP2-05-SW-A FILTER-070228 LGP2-05-SW-A-0703023/1/2007 3/1/2007 3/1/2007 2/28/2007 2/28/2007 2/28/2007 2/28/2007W WWWWWW2.4--2.2--2.1--2.62.7--2.4--2.7--3.05 U -- 5 U --5-- 5 U0.0007 U 0.00116 U 0.00258 U 0.00167 U 0.00224 U 0.00167 U 0.0016 U0.00826 U 0.00111 U 0.0113 U 0.00234 U 0.00644 U 0.00246 U 0.00926 U0.002 U 0.00342 U 0.00374 U 0.003 U 0.00411 U 0.00398 U 0.00261 U0.00193 U 0.00339 U 0.00383 U 0.00625 U 0.00429 U 0.00396 U 0.00257 U0.0019 U 0.00625 U 0.00389 U 0.00303 U 0.00417 U 0.00394 U 0.00263 U0.0098 J 0.0546 J 0.0101 J 0.131 0.015 J 0.0788 0.0106 J0.0359 J 0.546 0.0477 J 0.952 0.0741 J 0.729 0.0643 J0.0024 J0.00255 U 0.00167 U0.00275 J 0.00256 J0.00174 U 0.00117 U0.00256 U 0.00409 U 0.00294 U 0.00366 U 0.00274 U 0.00555 U 0.00172 U0.00625 U 0.00378 U 0.0028 U 0.00302 U 0.00625 U 0.00493 U 0.00159 U0.000695 U 0.000811 U 0.000903 U 0.00625 U 0.00625 U 0.00122 U 0.000542 U0.000634 U 0.000781 U 0.000806 U 0.00625 U 0.00625 U 0.00114 U 0.000505 U0.00625 U 0.000875 U 0.000932 U 0.00098 U 0.00625 U 0.00131 U 0.00625 U0.000925 U 0.00106 U 0.00111 U 0.00118 U 0.00188 U 0.00151 U 0.000671 U0.00625 U0.0124 J0.00625 U0.0188 J 0.00779 J 0.011 J0.00625 U0.00266 U 0.0017 U 0.00285 U 0.00253 U 0.00198 U 0.00225 U 0.00383 U0.0068 U0.0298 J0.0137 U0.0422 J 0.0162 J 0.0195 J0.00849 U0.0481 0.643 0.0578 1.15 0.116 0.838 0.07490.00241 0.000236 0.0000149 0.00317 0.00266 0.000264 0.0000170.000133 0.000236 0.0000149 0.000556 0.00023 0.000264 0.0000170.000342 0.000728 0.000106 0.00187 0.000493 0.000973 0.0001120.00241 0.000236 0.0000149 0.00317 0.00266 0.000264 0.0000170.000133 0.000236 0.0000149 0.000556 0.00023 0.000264 0.0000170.000349 0.000843 0.000115 0.00207 0.000511 0.00112 0.00012520 UJ -- 20 UJ -- 20 UJ -- 20 UJ20 U -- 20 U -- 20 U -- 20 U20 UJ -- 20 UJ -- 20 UJ -- 20 UJ20 U -- 20 U -- 20 U -- 20 U20 U -- 20 U -- 20 U -- 20 U20 UJ -- 20 UJ -- 20 UJ -- 20 UJ20 U -- 20 U -- 20 U -- 20 U20 UJ -- 20 UJ -- 20 UJ -- 20 UJ20 U -- 20 U -- 20 U -- 20 U20 U -- 20 U -- 20 U -- 20 U20 U -- 20 U -- 20 U -- 20 U20 U -- 20 U -- 20 U -- 20 U0.005 U -- 0.005 U -- 0.005 U -- 0.005 U0.005 U -- 0.005 U -- 0.005 U -- 0.005 U0.005 U -- 0.005 U -- 0.005 U -- 0.005 U0.01 U -- 0.01 U -- 0.01 U -- 0.01 U0.005 U -- 0.005 U -- 0.005 U -- 0.005 UHighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring3of6January2008050297‐01Table 1Summary of Analytical Results and Comparison with Benchmark Criteria – March 2007 Sampling EpisodeSampling CategorySample LocationSample IdentificationSample DateSample Matrix3,4,6-Trichloroguaiacol4,5,6-TrichloroguaiacolTetrachloroguaiacol3,4,5-Trichlorocatechol3,4,6-TrichlorocatecholTetrachlorocatecholTrichlorosyringolChlorophenols toxic unit sumRetene (μg/L)Retenebeta-Sitosterol (μg/L)beta-SitosterolVOCs (μg/L)Chloroform2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersLGP-02 LGP-03 LGP-03 LGP-04 LGP-04 LGP-05 LGP-05LGP2-02-SW-A-070301 LGP2-03-SW-A FILTER-070301 LGP2-03-SW-A-070301 LGP2-04-SW-A FILTER-070228 LGP2-04-SW-A-070302 LGP2-05-SW-A FILTER-070228 LGP2-05-SW-A-0703023/1/2007 3/1/2007 3/1/2007 2/28/2007 2/28/2007 2/28/2007 2/28/2007W WWWWWW0.005 U -- 0.005 U -- 0.005 U -- 0.005 U0.005 U -- 0.005 U -- 0.005 U -- 0.005 U0.01 U -- 0.01 U -- 0.01 U -- 0.01 U0.01 U -- 0.01 U -- 0.01 U -- 0.01 U0.01 U -- 0.01 U -- 0.01 U -- 0.01 U0.01 U -- 0.01 U -- 0.01 U -- 0.01 U0.005 U -- 0.005 U -- 0.005 U -- 0.005 U0.054 U -- 0.05 U -- 0.053 U -- 0.05 U0.44 J--0.42 J--0.40 J--0.32 J0.5 U -- 0.5 U -- 0.5 U -- 0.5 UHighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring4of6January2008050297‐01Table 1Summary of Analytical Results and Comparison with Benchmark Criteria – March 2007 Sampling EpisodeSampling CategorySample LocationSample IdentificationSample DateSample MatrixConventionals (mg/L)Dissolved organic carbonTotal organic carbonTotal suspended solidsDioxin/Furans (pg/L)2,3,7,8-TCDD1,2,3,7,8-PeCDD1,2,3,4,7,8-HxCDD1,2,3,6,7,8-HxCDD1,2,3,7,8,9-HxCDD1,2,3,4,6,7,8-HpCDDOCDD2,3,7,8-TCDF1,2,3,7,8-PeCDF2,3,4,7,8-PeCDF1,2,3,4,7,8-HxCDF1,2,3,6,7,8-HxCDF2,3,4,6,7,8-HxCDF1,2,3,7,8,9-HxCDF1,2,3,4,6,7,8-HpCDF1,2,3,4,7,8,9-HpCDFOCDFTotal Dioxin/FuranTotal Dioxin/Furan TEQ 1998 (Bird)Total Dioxin/Furan TEQ 1998 (Fish)Total Dioxin/Furan TEQ 1998 (Mammal)Total Dioxin/Furan TEQ (Bird)Total Dioxin/Furan TEQ (Fish)Total Dioxin/Furan TEQ (Mammal)Resin Acids (μg/L)3,4,5-TrichloroguaiacolTetrachloroguaiacolLinoleic AcidOleic Acid/Linolenic AcidPimaric acidIsopimaric acidDehydroabietic acidAbietic acid9,10-Dichlorostearic Acid14-Chlorodehydroabietic acid12-Chlorodehydroabietic acidDichlorodehydroabietic acidPhenols (μg/L)2,4,5-Trichlorophenol2,4,6-Trichlorophenol2,3,4,6-TetrachlorophenolPentachlorophenol3,4,5-Trichloroguaiacol2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersLGP-EFF LGP-EFF SR-REF SR-REFLGP2-EFF-AQ-A FILTER-070302 LGP2-EFF-AQ-A-070302 SR-REF-SW-A FILTER-070227 SR-REF-SW-A-0702273/2/2007 3/2/2007 2/27/2007 2/27/2007WW W W--111--2.4--143--2.3--60-- 5 UJ0.00498 J0.0037 U 0.00121 U 0.00163 U0.00625 U 0.00294 U 0.0018 U 0.00936 U0.00689 J0.0039 U 0.00436 U 0.00272 U0.00625 U 0.00625 U 0.00405 U 0.00272 U0.007 J0.00625 U 0.00427 U 0.00278 U0.0833 0.0153 J 0.0597 J 0.0129 J0.494 0.0461 J 0.428 0.0632 J0.0448 0.01610.00359 U 0.00133 U0.00848 J0.00625 U 0.00607 U 0.00251 U0.0161 J0.00625 U 0.00562 U 0.00235 U0.00895 J0.00129 U 0.000643 U 0.0014 U0.00625 U 0.00127 U 0.000621 U 0.00133 U0.00973 J0.00138 U 0.000702 U 0.00143 U0.00625 U 0.00158 U 0.00086 U 0.00162 U0.0186 J0.00625 U0.00812 J0.00625 U0.00209 U 0.00242 U 0.00189 U 0.00236 U0.017 J0.0101 U0.0231 J0.0125 U0.72 0.0775 0.519 0.07610.07 0.0161 0.000186 0.00001920.0214 0.000825 0.000186 0.00001920.0223 0.00177 0.000723 0.0001350.07 0.0161 0.000186 0.00001920.0214 0.000825 0.000186 0.00001920.019 0.00178 0.000814 0.000148-- 20 UJ -- 20 UJ-- 20 U -- 20 U--59 J-- 20 UJ--23-- 20 U-- 20 U -- 20 U-- 20 UJ -- 20 UJ--13 J-- 20 U-- 20 U -- 20 UJ-- 20 U -- 20 U-- 20 U -- 20 U-- 20 U -- 20 U-- 20 U -- 20 U-- 0.005 U -- 0.005 U--0.15-- 0.005 U-- 0.005 U -- 0.005 U-- 0.01 U -- 0.01 U--0.02 J-- 0.005 UHighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring5of6January2008050297‐01Table 1Summary of Analytical Results and Comparison with Benchmark Criteria – March 2007 Sampling EpisodeSampling CategorySample LocationSample IdentificationSample DateSample Matrix3,4,6-Trichloroguaiacol4,5,6-TrichloroguaiacolTetrachloroguaiacol3,4,5-Trichlorocatechol3,4,6-TrichlorocatecholTetrachlorocatecholTrichlorosyringolChlorophenols toxic unit sumRetene (μg/L)Retenebeta-Sitosterol (μg/L)beta-SitosterolVOCs (μg/L)Chloroform2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersLGP-EFF LGP-EFF SR-REF SR-REFLGP2-EFF-AQ-A FILTER-070302 LGP2-EFF-AQ-A-070302 SR-REF-SW-A FILTER-070227 SR-REF-SW-A-0702273/2/2007 3/2/2007 2/27/2007 2/27/2007WW W W--0.016-- 0.005 U--0.093-- 0.005 U--0.011-- 0.01 U-- 0.01 U -- 0.01 U-- 0.01 U -- 0.01 U-- 0.01 U -- 0.01 U-- 0.005 U -- 0.005 U0.29-- 0.052 U -- 0.05 UJ--7.8 J--0.86 J--1.0-- 0.5 UNote:DenotesreportinglimitabovetoxicitybenchmarkDenotesresultabovetoxicitybenchmarkBold=DetectedU=Thecompoundwasanalyzedfor,butwasnotdetected(ʺNon‐detectʺ)atorabovethemethodreportinglimit/methoddetectionlimit.J=Theresultisanestiinatedconcentrationthatislessthanthemethodreportinglimitbutgreaterthanorequaltothemethoddetectionlimit.CR‐REF=ClearwaterReferencestationSR‐REF=SnakeRiverReferencestationLGP=LowerGranitePoolDioxin/FuranTEQispersectionJ,ofpermitID0001163.HighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring6of6January2008050297‐01Table 2Summary of Analytical Results and Comparison with Benchmark Criteria – June 2007 Sampling EpisodeSampling Category 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersSample Location Water CR-REF CR-REF LGP-01 LGP-01 LGP-01 LGP-01Sample Identification Column CR-REF-SW-A-FILTER-070606 CR-REF-SW-A-PUF_N/A-070606 LGP2-01-SW-A-FILTER-070608 LGP2-01-SW-A-PUF_N/A-070608 LGP2-01-SW-D FILTER-070302 LGP2-01-SW-D-070302Sample Date Benchmark 6/6/2007 6/6/2007 6/8/2007 6/8/2007 3/2/2007 3/2/2007Sample Matrix μg/L W W W W W WConventionals (mg/L)Dissolved organic carbon -- -- -- -- --2.4Total organic carbon -- -- -- -- --2.8Total suspended solids -- -- -- -- -- 5 UDioxin/Furans (pg/L)2,3,7,8-TCDD 0.06 0.00472 U 0.00257 U 0.00315 U 0.00172 U 0.00165 U 0.00108 U1,2,3,7,8-PeCDD 0.00496 U 0.00711 U 0.00864 U 0.00406 U 0.00672 U 0.0162 U1,2,3,4,7,8-HxCDD 0.00654 U 0.00781 U 0.00696 U 0.00862 U 0.00507 U 0.00214 U1,2,3,6,7,8-HxCDD 0.0125 U 0.0078 U 0.0125 U 0.00878 U 0.00625 U 0.00211 U1,2,3,7,8,9-HxCDD 0.00707 U 0.00901 U 0.00794 U 0.00953 U 0.00625 U 0.00218 U1,2,3,4,6,7,8-HpCDD0.3050.0083 U0.1470.011 U0.103 0.0142 JOCDD1.94 0.0426 J 1.02 0.0597 J 1.09 0.0656 J2,3,7,8-TCDF 0.20 0.00254 U 0.00449 U0.00462 J0.00147 U0.003 J 0.00172 J1,2,3,7,8-PeCDF 0.00386 U 0.00455 U 0.00428 U 0.00325 U 0.00625 U 0.00216 U2,3,4,7,8-PeCDF 0.00328 U 0.00407 U 0.00384 U 0.00281 U 0.00223 U 0.00206 U1,2,3,4,7,8-HxCDF 0.0125 U 0.00234 U 0.00188 U 0.00625 U 0.00625 U 0.000954 U1,2,3,6,7,8-HxCDF 0.00157 U 0.00224 U 0.00186 U 0.00124 U 0.00625 U 0.00625 U2,3,4,6,7,8-HxCDF 0.00179 U 0.00249 U 0.0125 U 0.00138 U 0.00625 U 0.00625 U1,2,3,7,8,9-HxCDF 0.00216 U 0.00341 U 0.00262 U0.00723 J0.00113 U 0.00122 U1,2,3,4,6,7,8-HpCDF0.0403 J0.00371 U0.0304 J0.00625 U0.0148 J0.00625 U1,2,3,4,7,8,9-HpCDF 0.00395 U 0.00563 U 0.00343 U 0.00202 U 0.00199 U 0.00132 UOCDF0.0709 J0.013 U0.0889 J0.0065 U0.0338 J0.0125 UTotal Dioxin/Furan2.36 0.0426 1.29 0.0669 1.24 0.0815Total Dioxin/Furan TEQ 1998 (Bird)0.000909 0.00000426 0.00518 0.000729 0.00336 0.00174Total Dioxin/Furan TEQ 1998 (Fish)0.000909 0.00000426 0.000793 0.000729 0.000513 0.000107Total Dioxin/Furan TEQ 1998 (Mammal) 90.00365 0.00000426 0.00235 0.000729 0.00159 0.000321Total Dioxin/Furan TEQ (Bird)0.000909 0.00000426 0.00518 0.000729 0.00336 0.00174Total Dioxin/Furan TEQ (Fish)0.000909 0.00000426 0.000793 0.000729 0.000513 0.000107Total Dioxin/Furan TEQ (Mammal)0.00406 0.0000128 0.00257 0.000741 0.00182 0.000334Resin Acids (μg/L)1.03,4,5-Trichloroguaiacol -- -- -- -- -- 20 UJTetrachloroguaiacol -- -- -- -- -- 20 ULinoleic Acid -- -- -- -- -- 20 UJOleic Acid/Linolenic Acid -- -- -- -- -- 20 UPimaric acid -- -- -- -- -- 20 UIsopimaric acid -- -- -- -- -- 20 UJDehydroabietic acid -- -- -- -- -- 20 UAbietic acid -- -- -- -- -- 20 UJ9,10-Dichlorostearic Acid -- -- -- -- -- 20 U14-Chlorodehydroabietic acid -- -- -- -- -- 20 U12-Chlorodehydroabietic acid -- -- -- -- -- 20 UDichlorodehydroabietic acid -- -- -- -- -- 20 UPhenols (μg/L)2,4,5-Trichlorophenol 3.4 -- -- -- -- -- 0.005 U2,4,6-Trichlorophenol 7.3 -- -- -- -- -- 0.005 U2,3,4,6-Tetrachlorophenol 3.3 -- -- -- -- -- 0.005 UPentachlorophenol 0.18 -- -- -- -- -- 0.01 U3,4,5-Trichloroguaiacol 3.4 -- -- -- -- -- 0.005 UHighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring1of12January2008050297‐01Table 2Summary of Analytical Results and Comparison with Benchmark Criteria – June 2007 Sampling EpisodeSampling Category 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersSample Location Water CR-REF CR-REF LGP-01 LGP-01 LGP-01 LGP-01Sample Identification Column CR-REF-SW-A-FILTER-070606 CR-REF-SW-A-PUF_N/A-070606 LGP2-01-SW-A-FILTER-070608 LGP2-01-SW-A-PUF_N/A-070608 LGP2-01-SW-D FILTER-070302 LGP2-01-SW-D-070302Sample Date Benchmark 6/6/2007 6/6/2007 6/8/2007 6/8/2007 3/2/2007 3/2/2007Sample Matrix μg/L W W W W W W3,4,6-Trichloroguaiacol 3.4 -- -- -- -- -- 0.005 U4,5,6-Trichloroguaiacol 11 -- -- -- -- -- 0.005 UTetrachloroguaiacol 7.5 -- -- -- -- -- 0.01 U3,4,5-Trichlorocatechol 3.4 -- -- -- -- -- 0.01 U3,4,6-Trichlorocatechol 3.4 -- -- -- -- -- 0.01 UTetrachlorocatechol 2.0 -- -- -- -- -- 0.01 UTrichlorosyringol 3.4 -- -- -- -- -- 0.005 UChlorophenols toxic unit sumRetene (μg/L)Retene 0.5 -- -- -- -- -- 0.052 Ubeta-Sitosterol (μg/L)beta-Sitosterol 1.0 -- -- -- -- --0.5 JVOCs (μg/L)Chloroform 12.4 -- -- -- -- -- 0.5 UHighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring2of12January2008050297‐01Table 2Summary of Analytical Results and Comparison with Benchmark Criteria – June 2007 Sampling EpisodeSampling CategorySample LocationSample IdentificationSample DateSample MatrixConventionals (mg/L)Dissolved organic carbonTotal organic carbonTotal suspended solidsDioxin/Furans (pg/L)2,3,7,8-TCDD1,2,3,7,8-PeCDD1,2,3,4,7,8-HxCDD1,2,3,6,7,8-HxCDD1,2,3,7,8,9-HxCDD1,2,3,4,6,7,8-HpCDDOCDD2,3,7,8-TCDF1,2,3,7,8-PeCDF2,3,4,7,8-PeCDF1,2,3,4,7,8-HxCDF1,2,3,6,7,8-HxCDF2,3,4,6,7,8-HxCDF1,2,3,7,8,9-HxCDF1,2,3,4,6,7,8-HpCDF1,2,3,4,7,8,9-HpCDFOCDFTotal Dioxin/FuranTotal Dioxin/Furan TEQ 1998 (Bird)Total Dioxin/Furan TEQ 1998 (Fish)Total Dioxin/Furan TEQ 1998 (Mammal)Total Dioxin/Furan TEQ (Bird)Total Dioxin/Furan TEQ (Fish)Total Dioxin/Furan TEQ (Mammal)Resin Acids (μg/L)3,4,5-TrichloroguaiacolTetrachloroguaiacolLinoleic AcidOleic Acid/Linolenic AcidPimaric acidIsopimaric acidDehydroabietic acidAbietic acid9,10-Dichlorostearic Acid14-Chlorodehydroabietic acid12-Chlorodehydroabietic acidDichlorodehydroabietic acidPhenols (μg/L)2,4,5-Trichlorophenol2,4,6-Trichlorophenol2,3,4,6-TetrachlorophenolPentachlorophenol3,4,5-Trichloroguaiacol2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersLGP-01 LGP-01 LGP-02 LGP-02 LGP-02 LGP-02LGP2-01-SW-D-FILTER-070608 LGP2-01-SW-D-PUF_N/A-070608 LGP2-02-070621 LGP2-02-SW-A FILTER-070301 LGP2-02-SW-A-070301 LGP2-02-SW-A-FILTER-0706076/8/2007 6/8/2007 6/21/2007 3/1/2007 3/1/2007 6/7/2007W W WW W W-- --2.2--2.4---- --2.3--2.7---- --7-- 5 U --0.00566 U 0.00178 U -- 0.00199 U 0.0007 U 0.00396 U0.00961 U 0.00469 U -- 0.00279 U 0.00826 U 0.00702 U0.00606 U 0.0142 U -- 0.00514 U 0.002 U 0.00682 U0.0132 J0.0136 U -- 0.00625 U 0.00193 U 0.00704 U0.0125 U 0.0154 U -- 0.00528 U 0.0019 U 0.00785 U0.3160.00842 U --0.106 0.0098 J 0.1622.05 0.0223 J--0.732 0.0359 J 1.240.00662 J0.00214 U -- 0.00159 U0.0024 J 0.00374 J0.0125 U 0.00371 U -- 0.00566 U 0.00256 U 0.00334 U0.0125 U 0.00338 U -- 0.00539 U 0.00625 U 0.00316 U0.0125 U 0.00198 U -- 0.000693 U 0.000695 U 0.0125 U0.0125 U 0.00198 U -- 0.000594 U 0.000634 U 0.0125 U0.0125 U 0.00211 U -- 0.000665 U 0.00625 U 0.00259 U0.00272 U 0.00295 U -- 0.000781 U 0.000925 U 0.00313 U0.0455 J0.00397 U --0.0122 J0.00625 U0.0394 J0.00667 U 0.00608 U -- 0.00256 U 0.00266 U 0.00609 U0.16 J0.0127 U --0.0244 J0.0068 U0.0995 J2.59 0.0223--0.875 0.0481 1.540.00774 0.00000223--0.000304 0.00241 0.004430.00146 0.00000223--0.000304 0.000133 0.0008770.00582 0.00000223--0.00126 0.000342 0.002520.00774 0.00000223--0.000304 0.00241 0.004430.00146 0.00000223--0.000304 0.000133 0.0008770.00626 0.00000669--0.00141 0.000349 0.00279-- -- 20 U -- 20 UJ ---- -- 20 U -- 20 U ---- --4.4 J-- 20 UJ ---- -- 20 U -- 20 U ---- -- 20 U -- 20 U ---- -- 20 U -- 20 UJ ---- -- 20 U -- 20 U ---- -- 20 U -- 20 UJ ---- -- 20 U -- 20 U ---- -- 20 U -- 20 U ---- -- 20 U -- 20 U ---- -- 20 U -- 20 U ---- -- 0.005 U -- 0.005 U ---- -- 0.005 U -- 0.005 U ---- -- 0.005 U -- 0.005 U ---- -- 0.01 U -- 0.01 U ---- -- 0.005 U -- 0.005 U --HighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring3of12January2008050297‐01Table 2Summary of Analytical Results and Comparison with Benchmark Criteria – June 2007 Sampling EpisodeSampling CategorySample LocationSample IdentificationSample DateSample Matrix3,4,6-Trichloroguaiacol4,5,6-TrichloroguaiacolTetrachloroguaiacol3,4,5-Trichlorocatechol3,4,6-TrichlorocatecholTetrachlorocatecholTrichlorosyringolChlorophenols toxic unit sumRetene (μg/L)Retenebeta-Sitosterol (μg/L)beta-SitosterolVOCs (μg/L)Chloroform2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersLGP-01 LGP-01 LGP-02 LGP-02 LGP-02 LGP-02LGP2-01-SW-D-FILTER-070608 LGP2-01-SW-D-PUF_N/A-070608 LGP2-02-070621 LGP2-02-SW-A FILTER-070301 LGP2-02-SW-A-070301 LGP2-02-SW-A-FILTER-0706076/8/2007 6/8/2007 6/21/2007 3/1/2007 3/1/2007 6/7/2007W W WW W W-- -- 0.005 U -- 0.005 U ---- -- 0.005 U -- 0.005 U ---- -- 0.01 U -- 0.01 U ---- -- 0.01 U -- 0.01 U ---- -- 0.01 U -- 0.01 U ---- -- 0.01 U -- 0.01 U ---- -- 0.005 U -- 0.005 U ---- -- 1 U -- 0.054 U ---- --0.41 J--0.44 J---- -- 0.5 U -- 0.5 U --HighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring4of12January2008050297‐01Table 2Summary of Analytical Results and Comparison with Benchmark Criteria – June 2007 Sampling EpisodeSampling CategorySample LocationSample IdentificationSample DateSample MatrixConventionals (mg/L)Dissolved organic carbonTotal organic carbonTotal suspended solidsDioxin/Furans (pg/L)2,3,7,8-TCDD1,2,3,7,8-PeCDD1,2,3,4,7,8-HxCDD1,2,3,6,7,8-HxCDD1,2,3,7,8,9-HxCDD1,2,3,4,6,7,8-HpCDDOCDD2,3,7,8-TCDF1,2,3,7,8-PeCDF2,3,4,7,8-PeCDF1,2,3,4,7,8-HxCDF1,2,3,6,7,8-HxCDF2,3,4,6,7,8-HxCDF1,2,3,7,8,9-HxCDF1,2,3,4,6,7,8-HpCDF1,2,3,4,7,8,9-HpCDFOCDFTotal Dioxin/FuranTotal Dioxin/Furan TEQ 1998 (Bird)Total Dioxin/Furan TEQ 1998 (Fish)Total Dioxin/Furan TEQ 1998 (Mammal)Total Dioxin/Furan TEQ (Bird)Total Dioxin/Furan TEQ (Fish)Total Dioxin/Furan TEQ (Mammal)Resin Acids (μg/L)3,4,5-TrichloroguaiacolTetrachloroguaiacolLinoleic AcidOleic Acid/Linolenic AcidPimaric acidIsopimaric acidDehydroabietic acidAbietic acid9,10-Dichlorostearic Acid14-Chlorodehydroabietic acid12-Chlorodehydroabietic acidDichlorodehydroabietic acidPhenols (μg/L)2,4,5-Trichlorophenol2,4,6-Trichlorophenol2,3,4,6-TetrachlorophenolPentachlorophenol3,4,5-Trichloroguaiacol2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersLGP-02 LGP-03 LGP-03 LGP-03 LGP-03 LGP-03 LGP-04LGP2-02-SW-A-PUF_N/A-070607 LGP2-03-070621 LGP2-03-SW-A FILTER-070301 LGP2-03-SW-A-070301 LGP2-03-SW-A-FILTER-070607 LGP2-03-SW-A-PUF_N/A-070607 LGP2-04-0706216/7/2007 6/21/2007 3/1/2007 3/1/2007 6/7/2007 6/7/2007 6/21/2007W WW W W W W--2.3--2.2-- --2.2--2.5--2.4-- --2.3-- 5 U -- 5 U -- -- 5 U0.00225 U -- 0.00116 U 0.00258 U 0.00565 U 0.00371 U --0.00585 U -- 0.00111 U 0.0113 U 0.013 U 0.00254 U --0.00874 U -- 0.00342 U 0.00374 U 0.0106 U 0.00763 U --0.0091 U -- 0.00339 U 0.00383 U0.0173 J0.00782 U --0.00993 U -- 0.00625 U 0.00389 U 0.0123 U 0.00842 U --0.0313 U --0.0546 J 0.0101 J 0.4110.00778 U --0.068 J--0.546 0.0477 J 2.36 0.0519 J--0.00274 U -- 0.00255 U 0.00167 U 0.00536 U 0.00242 U --0.00519 U -- 0.00409 U 0.00294 U 0.0107 U 0.00651 U --0.00447 U -- 0.00378 U 0.0028 U 0.0101 U 0.00576 U --0.0033 U -- 0.000811 U 0.000903 U 0.00224 U 0.00203 U --0.00311 U -- 0.000781 U 0.000806 U 0.0125 U 0.00192 U --0.00365 U -- 0.000875 U 0.000932 U 0.00222 U 0.00212 U --0.00479 U -- 0.00106 U 0.00111 U 0.00409 U 0.00277 U --0.00342 U --0.0124 J0.00625 U0.0428 J0.00232 U --0.00505 U -- 0.0017 U 0.00285 U 0.0582 UJ 0.00351 U --0.0153 U --0.0298 J0.0137 U 0.925 UJ 0.0147 U --0.068--0.643 0.0578 2.83 0.0519--0.0000068--0.000236 0.0000149 0.00125 0.00000519--0.0000068--0.000236 0.0000149 0.00125 0.00000519--0.0000068--0.000728 0.000106 0.0065 0.00000519--0.0000068--0.000236 0.0000149 0.00125 0.00000519--0.0000068--0.000236 0.0000149 0.00125 0.00000519--0.0000204--0.000843 0.000115 0.00698 0.0000156---- 20 U -- 20 UJ -- -- 20 U-- 20 U -- 20 U -- -- 20 U-- 20 U -- 20 UJ -- -- 20 U-- 20 U -- 20 U -- -- 20 U-- 20 U -- 20 U -- -- 20 U-- 20 U -- 20 UJ -- -- 20 U-- 20 U -- 20 U -- -- 20 U-- 20 U -- 20 UJ -- -- 20 U-- 20 U -- 20 U -- -- 20 U-- 20 U -- 20 U -- -- 20 U-- 20 U -- 20 U -- -- 20 U-- 20 U -- 20 U -- -- 20 U-- 0.005 U -- 0.005 U -- -- 0.005 U-- 0.005 U -- 0.005 U -- -- 0.005 U-- 0.005 U -- 0.005 U -- -- 0.005 U-- 0.01 U -- 0.01 U -- -- 0.01 U-- 0.005 U -- 0.005 U -- -- 0.005 UHighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring5of12January2008050297‐01Table 2Summary of Analytical Results and Comparison with Benchmark Criteria – June 2007 Sampling EpisodeSampling CategorySample LocationSample IdentificationSample DateSample Matrix3,4,6-Trichloroguaiacol4,5,6-TrichloroguaiacolTetrachloroguaiacol3,4,5-Trichlorocatechol3,4,6-TrichlorocatecholTetrachlorocatecholTrichlorosyringolChlorophenols toxic unit sumRetene (μg/L)Retenebeta-Sitosterol (μg/L)beta-SitosterolVOCs (μg/L)Chloroform2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersLGP-02 LGP-03 LGP-03 LGP-03 LGP-03 LGP-03 LGP-04LGP2-02-SW-A-PUF_N/A-070607 LGP2-03-070621 LGP2-03-SW-A FILTER-070301 LGP2-03-SW-A-070301 LGP2-03-SW-A-FILTER-070607 LGP2-03-SW-A-PUF_N/A-070607 LGP2-04-0706216/7/2007 6/21/2007 3/1/2007 3/1/2007 6/7/2007 6/7/2007 6/21/2007W WW W W W W-- 0.005 U -- 0.005 U -- -- 0.005 U-- 0.005 U -- 0.005 U -- -- 0.005 U-- 0.01 U -- 0.01 U -- -- 0.01 U-- 0.01 U -- 0.01 U -- -- 0.01 U-- 0.01 U -- 0.01 U -- -- 0.01 U-- 0.01 U -- 0.01 U -- -- 0.01 U-- 0.005 U -- 0.005 U -- -- 0.005 U-- 1 U -- 0.05 U -- -- 1 U--0.35 J--0.42 J-- --0.21 J-- 0.5 U -- 0.5 U -- -- 0.5 UHighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring6of12January2008050297‐01Table 2Summary of Analytical Results and Comparison with Benchmark Criteria – June 2007 Sampling EpisodeSampling CategorySample LocationSample IdentificationSample DateSample MatrixConventionals (mg/L)Dissolved organic carbonTotal organic carbonTotal suspended solidsDioxin/Furans (pg/L)2,3,7,8-TCDD1,2,3,7,8-PeCDD1,2,3,4,7,8-HxCDD1,2,3,6,7,8-HxCDD1,2,3,7,8,9-HxCDD1,2,3,4,6,7,8-HpCDDOCDD2,3,7,8-TCDF1,2,3,7,8-PeCDF2,3,4,7,8-PeCDF1,2,3,4,7,8-HxCDF1,2,3,6,7,8-HxCDF2,3,4,6,7,8-HxCDF1,2,3,7,8,9-HxCDF1,2,3,4,6,7,8-HpCDF1,2,3,4,7,8,9-HpCDFOCDFTotal Dioxin/FuranTotal Dioxin/Furan TEQ 1998 (Bird)Total Dioxin/Furan TEQ 1998 (Fish)Total Dioxin/Furan TEQ 1998 (Mammal)Total Dioxin/Furan TEQ (Bird)Total Dioxin/Furan TEQ (Fish)Total Dioxin/Furan TEQ (Mammal)Resin Acids (μg/L)3,4,5-TrichloroguaiacolTetrachloroguaiacolLinoleic AcidOleic Acid/Linolenic AcidPimaric acidIsopimaric acidDehydroabietic acidAbietic acid9,10-Dichlorostearic Acid14-Chlorodehydroabietic acid12-Chlorodehydroabietic acidDichlorodehydroabietic acidPhenols (μg/L)2,4,5-Trichlorophenol2,4,6-Trichlorophenol2,3,4,6-TetrachlorophenolPentachlorophenol3,4,5-Trichloroguaiacol2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersLGP-04 LGP-04 LGP-04 LGP-04 LGP-05 LGP-05 LGP-05LGP2-04-SW-A FILTER-070228 LGP2-04-SW-A-070302 LGP2-04-SW-A-FILTER-070607 LGP2-04-SW-A-PUF_N/A-070607 LGP2-05-070621 LGP2-05-SW-A FILTER-070228 LGP2-05-SW-A-0703022/28/2007 2/28/2007 6/7/2007 6/7/2007 6/21/2007 2/28/2007 2/28/2007W W W W WW W--2.1-- --2.1--2.6--2.7-- --2.3--3.0--5-- -- 5 U -- 5 U0.00167 U 0.00224 U 0.00581 U 0.00184 U -- 0.00167 U 0.0016 U0.00234 U 0.00644 U 0.00743 U 0.00406 U -- 0.00246 U 0.00926 U0.003 U 0.00411 U 0.0125 U 0.00622 U -- 0.00398 U 0.00261 U0.00625 U 0.00429 U0.0293 J0.00633 U -- 0.00396 U 0.00257 U0.00303 U 0.00417 U0.0179 J0.00687 U -- 0.00394 U 0.00263 U0.131 0.015 J 0.7980.00731 U --0.0788 0.0106 J0.952 0.0741 J 5.47 0.0503 J--0.729 0.0643 J0.00275 J 0.00256 J 0.00731 J0.00184 U -- 0.00174 U 0.00117 U0.00366 U 0.00274 U 0.0125 U 0.00323 U -- 0.00555 U 0.00172 U0.00302 U 0.00625 U 0.0125 U 0.00298 U -- 0.00493 U 0.00159 U0.00625 U 0.00625 U 0.0125 U 0.00259 U -- 0.00122 U 0.000542 U0.00625 U 0.00625 U 0.0125 U 0.00245 U -- 0.00114 U 0.000505 U0.00098 U 0.00625 U 0.0125 U 0.00288 U -- 0.00131 U 0.00625 U0.00118 U 0.00188 U 0.00155 U 0.0036 U -- 0.00151 U 0.000671 U0.0188 J 0.00779 J 0.102 J0.00304 U --0.011 J0.00625 U0.00253 U 0.00198 U 0.00564 U 0.00456 U -- 0.00225 U 0.00383 U0.0422 J 0.0162 J 0.181 J0.0204 U --0.0195 J0.00849 U1.15 0.116 6.61 0.0503--0.838 0.07490.00317 0.00266 0.0118 0.00000503--0.000264 0.0000170.000556 0.00023 0.00322 0.00000503--0.000264 0.0000170.00187 0.000493 0.015 0.00000503--0.000973 0.0001120.00317 0.00266 0.0118 0.00000503--0.000264 0.0000170.000556 0.00023 0.00322 0.00000503--0.000264 0.0000170.00207 0.000511 0.0161 0.0000151--0.00112 0.000125-- 20 UJ -- -- 20 U -- 20 UJ-- 20 U -- -- 20 U -- 20 U-- 20 UJ -- -- 20 U -- 20 UJ-- 20 U -- -- 20 U -- 20 U-- 20 U -- -- 20 U -- 20 U-- 20 UJ -- -- 20 U -- 20 UJ-- 20 U -- -- 20 U -- 20 U-- 20 UJ -- -- 20 U -- 20 UJ-- 20 U -- -- 20 U -- 20 U-- 20 U -- -- 20 U -- 20 U-- 20 U -- -- 20 U -- 20 U-- 20 U -- -- 20 U -- 20 U-- 0.005 U -- -- 0.005 U -- 0.005 U-- 0.005 U -- -- 0.005 U -- 0.005 U-- 0.005 U -- -- 0.005 U -- 0.005 U-- 0.01 U -- -- 0.01 U -- 0.01 U-- 0.005 U -- -- 0.005 U -- 0.005 UHighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring7of12January2008050297‐01Table 2Summary of Analytical Results and Comparison with Benchmark Criteria – June 2007 Sampling EpisodeSampling CategorySample LocationSample IdentificationSample DateSample Matrix3,4,6-Trichloroguaiacol4,5,6-TrichloroguaiacolTetrachloroguaiacol3,4,5-Trichlorocatechol3,4,6-TrichlorocatecholTetrachlorocatecholTrichlorosyringolChlorophenols toxic unit sumRetene (μg/L)Retenebeta-Sitosterol (μg/L)beta-SitosterolVOCs (μg/L)Chloroform2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersLGP-04 LGP-04 LGP-04 LGP-04 LGP-05 LGP-05 LGP-05LGP2-04-SW-A FILTER-070228 LGP2-04-SW-A-070302 LGP2-04-SW-A-FILTER-070607 LGP2-04-SW-A-PUF_N/A-070607 LGP2-05-070621 LGP2-05-SW-A FILTER-070228 LGP2-05-SW-A-0703022/28/2007 2/28/2007 6/7/2007 6/7/2007 6/21/2007 2/28/2007 2/28/2007W W W W WW W-- 0.005 U -- -- 0.005 U -- 0.005 U-- 0.005 U -- -- 0.005 U -- 0.005 U-- 0.01 U -- -- 0.01 U -- 0.01 U-- 0.01 U -- -- 0.01 U -- 0.01 U-- 0.01 U -- -- 0.01 U -- 0.01 U-- 0.01 U -- -- 0.01 U -- 0.01 U-- 0.005 U -- -- 0.005 U -- 0.005 U-- 0.053 U -- -- 1 U -- 0.05 U--0.40 J-- --0.19 J--0.32 J-- 0.5 U -- -- 0.5 U -- 0.5 UHighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring8of12January2008050297‐01Table 2Summary of Analytical Results and Comparison with Benchmark Criteria – June 2007 Sampling EpisodeSampling CategorySample LocationSample IdentificationSample DateSample MatrixConventionals (mg/L)Dissolved organic carbonTotal organic carbonTotal suspended solidsDioxin/Furans (pg/L)2,3,7,8-TCDD1,2,3,7,8-PeCDD1,2,3,4,7,8-HxCDD1,2,3,6,7,8-HxCDD1,2,3,7,8,9-HxCDD1,2,3,4,6,7,8-HpCDDOCDD2,3,7,8-TCDF1,2,3,7,8-PeCDF2,3,4,7,8-PeCDF1,2,3,4,7,8-HxCDF1,2,3,6,7,8-HxCDF2,3,4,6,7,8-HxCDF1,2,3,7,8,9-HxCDF1,2,3,4,6,7,8-HpCDF1,2,3,4,7,8,9-HpCDFOCDFTotal Dioxin/FuranTotal Dioxin/Furan TEQ 1998 (Bird)Total Dioxin/Furan TEQ 1998 (Fish)Total Dioxin/Furan TEQ 1998 (Mammal)Total Dioxin/Furan TEQ (Bird)Total Dioxin/Furan TEQ (Fish)Total Dioxin/Furan TEQ (Mammal)Resin Acids (μg/L)3,4,5-TrichloroguaiacolTetrachloroguaiacolLinoleic AcidOleic Acid/Linolenic AcidPimaric acidIsopimaric acidDehydroabietic acidAbietic acid9,10-Dichlorostearic Acid14-Chlorodehydroabietic acid12-Chlorodehydroabietic acidDichlorodehydroabietic acidPhenols (μg/L)2,4,5-Trichlorophenol2,4,6-Trichlorophenol2,3,4,6-TetrachlorophenolPentachlorophenol3,4,5-Trichloroguaiacol2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersLGP-05 LGP-05 LGP-EFF LGP-EFF LGP-EFF LGP-EFFLGP2-05-SW-A-FILTER-070607 LGP2-05-SW-A-PUF_N/A-070607 LGP2-EFF-070621 LGP2-EFF-AQ-A FILTER-070302 LGP2-EFF-AQ-A-070302 LGP2-EFF-AQ-A-FILTER-0706066/7/2007 6/7/2007 6/21/2007 3/2/2007 3/2/2007 6/6/2007W W WW W W-- --97.6--111---- --112--143---- --43--60--0.00301 U 0.00386 U --0.00498 J0.0037 U0.0148 J0.00579 U 0.00304 U -- 0.00625 U 0.00294 U 0.0125 U0.00388 U 0.00823 U --0.00689 J0.0039 U 0.0125 U0.0125 U 0.00829 U -- 0.00625 U 0.00625 U 0.0125 U0.0042 U 0.00922 U --0.007 J0.00625 U 0.0125 U0.1330.00625 U --0.0833 0.0153 J 0.107 J0.993 0.0452 J--0.494 0.0461 J 0.7430.00276 U 0.00187 U --0.0448 0.0161 0.1080.00228 U 0.00736 U --0.00848 J0.00625 U 0.0125 U0.00198 U 0.0067 U --0.0161 J0.00625 U0.013 J0.0125 U 0.00146 U --0.00895 J0.00129 U 0.0125 U0.0125 U 0.00141 U -- 0.00625 U 0.00127 U 0.00131 U0.00188 U 0.00154 U --0.00973 J0.00138 U 0.00144 U0.00243 U 0.0021 U -- 0.00625 U 0.00158 U 0.00168 U0.0276 J0.00275 U --0.0186 J0.00625 U0.0147 J0.00297 U 0.00421 U -- 0.00209 U 0.00242 U 0.00249 U0.068 J0.0248 U --0.017 J0.0101 U0.0309 J1.22 0.0452--0.72 0.0775 1.030.000515 0.00000452--0.07 0.0161 0.1360.000515 0.00000452--0.0214 0.000825 0.0270.00171 0.00000452--0.0223 0.00177 0.03340.000515 0.00000452--0.07 0.0161 0.1360.000515 0.00000452--0.0214 0.000825 0.0270.00192 0.0000136--0.019 0.00178 0.0309-- -- 20 U -- 20 UJ ---- -- 20 U -- 20 U ---- --54 J--59 J---- --74 J--23---- --4.2 J-- 20 U ---- --13 J-- 20 UJ ---- --9.3 J--13 J---- --11 J-- 20 U ---- -- 20 U -- 20 U ---- -- 20 U -- 20 U ---- -- 20 U -- 20 U ---- -- 20 U -- 20 U ---- -- 0.005 U -- 0.005 U ---- --0.21--0.15---- -- 0.005 U -- 0.005 U ---- -- 0.01 U -- 0.01 U ---- --0.031--0.02 J--HighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring9of12January2008050297‐01Table 2Summary of Analytical Results and Comparison with Benchmark Criteria – June 2007 Sampling EpisodeSampling CategorySample LocationSample IdentificationSample DateSample Matrix3,4,6-Trichloroguaiacol4,5,6-TrichloroguaiacolTetrachloroguaiacol3,4,5-Trichlorocatechol3,4,6-TrichlorocatecholTetrachlorocatecholTrichlorosyringolChlorophenols toxic unit sumRetene (μg/L)Retenebeta-Sitosterol (μg/L)beta-SitosterolVOCs (μg/L)Chloroform2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersLGP-05 LGP-05 LGP-EFF LGP-EFF LGP-EFF LGP-EFFLGP2-05-SW-A-FILTER-070607 LGP2-05-SW-A-PUF_N/A-070607 LGP2-EFF-070621 LGP2-EFF-AQ-A FILTER-070302 LGP2-EFF-AQ-A-070302 LGP2-EFF-AQ-A-FILTER-0706066/7/2007 6/7/2007 6/21/2007 3/2/2007 3/2/2007 6/6/2007W W WW W W-- -- 0.005 U --0.016---- --0.052--0.093---- --0.012--0.011---- -- 0.01 U -- 0.01 U ---- -- 0.01 U -- 0.01 U ---- -- 0.01 U -- 0.01 U ---- -- 0.005 U -- 0.005 U --0.305 0.29-- -- 1 U -- 0.052 U ---- --11 J--7.8 J---- --1.3--1.0--HighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring10of12January2008050297‐01Table 2Summary of Analytical Results and Comparison with Benchmark Criteria – June 2007 Sampling EpisodeSampling CategorySample LocationSample IdentificationSample DateSample MatrixConventionals (mg/L)Dissolved organic carbonTotal organic carbonTotal suspended solidsDioxin/Furans (pg/L)2,3,7,8-TCDD1,2,3,7,8-PeCDD1,2,3,4,7,8-HxCDD1,2,3,6,7,8-HxCDD1,2,3,7,8,9-HxCDD1,2,3,4,6,7,8-HpCDDOCDD2,3,7,8-TCDF1,2,3,7,8-PeCDF2,3,4,7,8-PeCDF1,2,3,4,7,8-HxCDF1,2,3,6,7,8-HxCDF2,3,4,6,7,8-HxCDF1,2,3,7,8,9-HxCDF1,2,3,4,6,7,8-HpCDF1,2,3,4,7,8,9-HpCDFOCDFTotal Dioxin/FuranTotal Dioxin/Furan TEQ 1998 (Bird)Total Dioxin/Furan TEQ 1998 (Fish)Total Dioxin/Furan TEQ 1998 (Mammal)Total Dioxin/Furan TEQ (Bird)Total Dioxin/Furan TEQ (Fish)Total Dioxin/Furan TEQ (Mammal)Resin Acids (μg/L)3,4,5-TrichloroguaiacolTetrachloroguaiacolLinoleic AcidOleic Acid/Linolenic AcidPimaric acidIsopimaric acidDehydroabietic acidAbietic acid9,10-Dichlorostearic Acid14-Chlorodehydroabietic acid12-Chlorodehydroabietic acidDichlorodehydroabietic acidPhenols (μg/L)2,4,5-Trichlorophenol2,4,6-Trichlorophenol2,3,4,6-TetrachlorophenolPentachlorophenol3,4,5-Trichloroguaiacol2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersLGP-EFF LGP-EFF SR-REF SR-REF SR-REF SR-REF SR-REFLGP2-EFF-AQ-A-PUF_N/A-070606 LGP2-EFF-AQ-D-070302 LGP2-SR-REF-070621 SR-REF-SW-A FILTER-070227 SR-REF-SW-A-070227 SR-REF-SW-A-FILTER-070606 SR-REF-SW-A-PUF_N/A-0706066/6/2007 3/2/2007 6/21/2007 2/27/2007 2/27/2007 6/6/2007 6/6/2007W WG W W W W W--108 2.1--2.4-- ----142 2.2--2.3-- ----585 U -- 5 UJ -- --0.00217 U -- -- 0.00121 U 0.00163 U 0.00404 U 0.00363 U0.00334 U -- -- 0.0018 U 0.00936 U 0.00383 U 0.00277 U0.00569 U -- -- 0.00436 U 0.00272 U 0.0125 U 0.00456 U0.00569 U -- -- 0.00405 U 0.00272 U 0.0125 U 0.00481 U0.00635 U -- -- 0.00427 U 0.00278 U 0.0125 U 0.00551 U0.0161 J-- --0.0597 J 0.0129 J 0.1290.0055 U0.0303 J-- --0.428 0.0632 J 1.04 0.0381 J0.0102 J-- -- 0.00359 U 0.00133 U 0.0025 U 0.00167 U0.00455 U -- -- 0.00607 U 0.00251 U 0.0019 U 0.00244 U0.00422 U -- -- 0.00562 U 0.00235 U 0.00173 U 0.00209 U0.00188 U -- -- 0.000643 U 0.0014 U 0.00163 U 0.00161 U0.00188 U -- -- 0.000621 U 0.00133 U 0.00155 U 0.0016 U0.00198 U -- -- 0.000702 U 0.00143 U 0.00162 U 0.00173 U0.00271 U -- -- 0.00086 U 0.00162 U 0.00195 U 0.00223 U0.00281 U -- --0.00812 J0.00625 U0.0263 J0.00242 U0.00423 U -- -- 0.00189 U 0.00236 U 0.00344 U 0.00355 U0.0197 U -- --0.0231 J0.0125 U0.0696 J0.0201 U0.0566-- --0.519 0.0761 1.26 0.03810.0102-- --0.000186 0.0000192 0.000503 0.000003810.000529-- --0.000186 0.0000192 0.000503 0.000003810.00118-- --0.000723 0.000135 0.00166 0.000003810.0102-- --0.000186 0.0000192 0.000503 0.000003810.000529-- --0.000186 0.0000192 0.000503 0.000003810.00119-- --0.000814 0.000148 0.00189 0.0000114-- 20 UJ 20 U -- 20 UJ -- ---- 20 U 20 U -- 20 U -- ----17 J 13 J-- 20 UJ -- ----2520 U -- 20 U -- ---- 20 U 20 U -- 20 U -- ---- 20 UJ 20 U -- 20 UJ -- ---- 20 U 20 U -- 20 U -- ---- 20 UJ 20 U -- 20 UJ -- ---- 20 U 20 U -- 20 U -- ---- 20 U 20 U -- 20 U -- ---- 20 U 20 U -- 20 U -- ---- 20 U 20 U -- 20 U -- ---- 0.005 U 0.005 U -- 0.005 U -- ----0.130.005 U -- 0.005 U -- ---- 0.005 U 0.005 U -- 0.005 U -- ---- 0.01 U 0.01 U -- 0.01 U -- ----0.0190.005 U -- 0.005 U -- --HighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring11of12January2008050297‐01Table 2Summary of Analytical Results and Comparison with Benchmark Criteria – June 2007 Sampling EpisodeSampling CategorySample LocationSample IdentificationSample DateSample Matrix3,4,6-Trichloroguaiacol4,5,6-TrichloroguaiacolTetrachloroguaiacol3,4,5-Trichlorocatechol3,4,6-TrichlorocatecholTetrachlorocatecholTrichlorosyringolChlorophenols toxic unit sumRetene (μg/L)Retenebeta-Sitosterol (μg/L)beta-SitosterolVOCs (μg/L)Chloroform2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersLGP-EFF LGP-EFF SR-REF SR-REF SR-REF SR-REF SR-REFLGP2-EFF-AQ-A-PUF_N/A-070606 LGP2-EFF-AQ-D-070302 LGP2-SR-REF-070621 SR-REF-SW-A FILTER-070227 SR-REF-SW-A-070227 SR-REF-SW-A-FILTER-070606 SR-REF-SW-A-PUF_N/A-0706066/6/2007 3/2/2007 6/21/2007 2/27/2007 2/27/2007 6/6/2007 6/6/2007W WG W W W W W--0.0170.005 U -- 0.005 U -- ----0.0910.005 U -- 0.005 U -- ----0.0120.01 U -- 0.01 U -- ----0.0340.01 U -- 0.01 U -- ---- 0.01 U 0.01 U -- 0.01 U -- ---- 0.01 U 0.01 U -- 0.01 U -- ---- 0.005 U 0.005 U -- 0.005 U -- --0.303-- 0.054 U 1 U -- 0.05 UJ -- ----4.5 J 0.33 J--0.86 J-- ----1.00.5 U -- 0.5 U -- --Notes:DenotesreportinglimitabovetoxicitybenchmarkDenotesresultabovetoxicitybenchmarkBold=DetectedU=Thecompoundwasanalyzedfor,butwasnotdetected(ʺNon‐detectʺ)atorabovethemethodreportinglimit/methoddetectionlimit.J=Theresultisanestiinatedconcentrationthatislessthanthemethodreportinglimitbutgreaterthanorequaltothemethoddetectionlimit.CR‐REF=ClearwaterReferencestationSR‐REF=SnakeRiverReferencestationLGP=LowerGranitePoolDioxin/FuranTEQispersectionJ,ofpermitID0001163.HighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring12of12January2008050297‐01Table 3Summary of Chemical and Conventional AnalysesSampling Category 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersSample Location CR-REF CR-REF CR-REF CR-REF CR-REF LGP-01 LGP-01Sample Identification CR-REF-SW-A FILTER-070226 CR-REF-SW-A-070226 CR-REF-SW-A-FILTER-070606 CR-REF-SW-A-PUF_N/A-070606 LGP2-CR-REF-070621 LGP2-01-A-070621 LGP2-01-B-070621Sample Date Toxicity 2/26/2007 2/26/2007 6/6/2007 6/6/2007 6/21/2007 6/21/2007 6/21/2007Sample Matrix Benchmark W W W W W W WConventionals (mg/L)Dissolved organic carbon mg/L --3.0-- --1.7 2.4 0.3 JTotal organic carbon mg/L --3.0-- --1.8 2.3 0.12 JTotal suspended solids mg/L -- 5 UJ -- -- 5 U 5 U 5 UDioxin/Furans (pg/L)(pg/L)2,3,7,8-TCDD pg/L 0.06 0.00114 U 0.00162 U 0.00472 U 0.00257 U -- -- --1,2,3,7,8-PeCDD pg/L 0.00224 U 0.00907 U 0.00496 U 0.00711 U -- -- --1,2,3,4,7,8-HxCDD pg/L 0.00391 U 0.00354 U 0.00654 U 0.00781 U -- -- --1,2,3,6,7,8-HxCDD pg/L 0.00625 U 0.00357 U 0.0125 U 0.0078 U -- -- --1,2,3,7,8,9-HxCDD pg/L 0.00625 U 0.00368 U 0.00707 U 0.00901 U -- -- --1,2,3,4,6,7,8-HpCDD pg/L0.0829 0.016 J 0.3050.0083 U -- -- --OCDD pg/L0.635 0.0834 J 1.94 0.0426 J-- -- --2,3,7,8-TCDF pg/L 0.20 0.00185 U0.00174 J0.00254 U 0.00449 U -- -- --1,2,3,7,8-PeCDF pg/L 0.00624 U 0.00302 U 0.00386 U 0.00455 U -- -- --2,3,4,7,8-PeCDF pg/L 0.00543 U 0.00284 U 0.00328 U 0.00407 U -- -- --1,2,3,4,7,8-HxCDF pg/L 0.00625 U 0.00625 U 0.0125 U 0.00234 U -- -- --1,2,3,6,7,8-HxCDF pg/L 0.00625 U 0.00625 U 0.00157 U 0.00224 U -- -- --2,3,4,6,7,8-HxCDF pg/L 0.00625 U 0.00625 U 0.00179 U 0.00249 U -- -- --1,2,3,7,8,9-HxCDF pg/L 0.000827 U 0.00113 U 0.00216 U 0.00341 U -- -- --1,2,3,4,6,7,8-HpCDF pg/L0.0173 J0.00625 U0.0403 J0.00371 U -- -- --1,2,3,4,7,8,9-HpCDF pg/L 0.00163 U 0.00321 U 0.00395 U 0.00563 U -- -- --OCDF pg/L0.0404 J0.0125 U0.0709 J0.013 U -- -- --Total Dioxin/Furan pg/L0.776 0.101 2.36 0.0426-- -- --Total Dioxin/Furan TEQ 1998 (Bird) pg/L0.000323 0.00176 0.000909 0.00000426-- -- --Total Dioxin/Furan TEQ 1998 (Fish) pg/L0.000323 0.000111 0.000909 0.00000426-- -- --Total Dioxin/Furan TEQ 1998 (Mammal) pg/L0.00107 0.000342 0.00365 0.00000426-- -- --Total Dioxin/Furan TEQ (Bird) pg/L0.000323 0.00176 0.000909 0.00000426-- -- --Total Dioxin/Furan TEQ (Fish) pg/L0.000323 0.000111 0.000909 0.00000426-- -- --Total Dioxin/Furan TEQ (Mammal) pg/L0.0012 0.000359 0.00406 0.0000128-- -- --Resin Acids (μg/L)2.2 μg/LLinoleic Acid μg/L -- 20 UJ -- -- 20 U4.0 J20 UOleic Acid/Linolenic Acid μg/L -- 20 UJ -- -- 20 U 20 U 20 UPimaric acid μg/L -- 20 UJ -- -- 20 U 20 U 20 UIsopimaric acid μg/L -- 20 UJ -- -- 20 U 20 U 20 UDehydroabietic acid μg/L -- 20 UJ -- -- 20 U 20 U 20 UAbietic acid μg/L -- 20 UJ -- -- 20 U 20 U 20 U9,10-Dichlorostearic Acid μg/L -- 20 UJ -- -- 20 U 20 U 20 U14-Chlorodehydroabietic acid μg/L -- 20 UJ -- -- 20 U 20 U 20 U12-Chlorodehydroabietic acid μg/L -- 20 UJ -- -- 20 U 20 U 20 UDichlorodehydroabietic acid μg/L -- 20 UJ -- -- 20 U 20 U 20 UPhenols (μg/L)(μg/L)2,4,5-Trichlorophenol μg/L 2.6 -- 0.005 U -- -- 0.005 U 0.005 U 0.005 U2,4,6-Trichlorophenol μg/L 7.3 -- 0.005 U -- -- 0.005 U 0.005 U 0.005 U2,3,4,6-Tetrachlorophenol μg/L 3.3 -- 0.005 U -- -- 0.005 U 0.005 U 0.005 UPentachlorophenol μg/L 0.18 -- 0.01 U -- -- 0.01 U 0.01 U 0.01 U3,4,5-Trichloroguaiacol μg/L 7.5 -- 0.005 U -- -- 0.005 U 0.005 U 0.005 U3,4,6-Trichloroguaiacol μg/L 2.6 -- 0.005 U -- -- 0.005 U 0.005 U 0.005 U4,5,6-Trichloroguaiacol μg/L 2.6 -- 0.005 U -- -- 0.005 U 0.005 U 0.005 UUnitsHighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring1of14January2008050297‐01Table 3Summary of Chemical and Conventional AnalysesSampling Category 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersSample Location CR-REF CR-REF CR-REF CR-REF CR-REF LGP-01 LGP-01Sample Identification CR-REF-SW-A FILTER-070226 CR-REF-SW-A-070226 CR-REF-SW-A-FILTER-070606 CR-REF-SW-A-PUF_N/A-070606 LGP2-CR-REF-070621 LGP2-01-A-070621 LGP2-01-B-070621Sample Date Toxicity 2/26/2007 2/26/2007 6/6/2007 6/6/2007 6/21/2007 6/21/2007 6/21/2007Sample Matrix Benchmark W W W W W W WUnitsTetrachloroguaiacol μg/L 10 -- 0.01 U -- -- 0.01 U 0.01 U 0.01 U3,4,5-Trichlorocatechol μg/L 2.6 -- 0.01 U -- -- 0.01 U 0.01 U 0.01 U3,4,6-Trichlorocatechol μg/L 2.6 -- 0.01 U -- -- 0.01 U 0.01 U 0.01 UTetrachlorocatechol μg/L 11.0 -- 0.01 U -- -- 0.01 U 0.01 U 0.01 UTrichlorosyringol μg/L 2.6 -- 0.005 U -- -- 0.005 U 0.005 U 0.005 UChlorophenols toxic unit sumRetene (μg/L)Retene μg/L 3.2 -- 0.05 UJ -- -- 1 U 1 U 1 Ubeta-Sitosterol (μg/L)beta-Sitosterol μg/L 2.5 -- 0.54 UJ -- -- 0.53 UJ0.55 J0.54 UJVOCs (μg/L)Chloroform μg/L 12.4 -- 0.5 U -- -- 0.5 U 0.5 U2.5HighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring2of14January2008050297‐01Table 3Summary of Chemical and Conventional AnalysesSampling CategorySample LocationSample IdentificationSample DateSample MatrixConventionals (mg/L)Dissolved organic carbonTotal organic carbonTotal suspended solidsDioxin/Furans (pg/L)2,3,7,8-TCDD1,2,3,7,8-PeCDD1,2,3,4,7,8-HxCDD1,2,3,6,7,8-HxCDD1,2,3,7,8,9-HxCDD1,2,3,4,6,7,8-HpCDDOCDD2,3,7,8-TCDF1,2,3,7,8-PeCDF2,3,4,7,8-PeCDF1,2,3,4,7,8-HxCDF1,2,3,6,7,8-HxCDF2,3,4,6,7,8-HxCDF1,2,3,7,8,9-HxCDF1,2,3,4,6,7,8-HpCDF1,2,3,4,7,8,9-HpCDFOCDFTotal Dioxin/FuranTotal Dioxin/Furan TEQ 1998 (Bird)Total Dioxin/Furan TEQ 1998 (Fish)Total Dioxin/Furan TEQ 1998 (Mammal)Total Dioxin/Furan TEQ (Bird)Total Dioxin/Furan TEQ (Fish)Total Dioxin/Furan TEQ (Mammal)Resin Acids (μg/L)Linoleic AcidOleic Acid/Linolenic AcidPimaric acidIsopimaric acidDehydroabietic acidAbietic acid9,10-Dichlorostearic Acid14-Chlorodehydroabietic acid12-Chlorodehydroabietic acidDichlorodehydroabietic acidPhenols (μg/L)2,4,5-Trichlorophenol2,4,6-Trichlorophenol2,3,4,6-TetrachlorophenolPentachlorophenol3,4,5-Trichloroguaiacol3,4,6-Trichloroguaiacol4,5,6-Trichloroguaiacol2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersLGP-01 LGP-01 LGP-01 LGP-01 LGP-01 LGP-01 LGP-01LGP2-01-D-070621 LGP2-01-SW-A FILTER-070302 LGP2-01-SW-A-070302 LGP2-01-SW-A-FILTER-070608 LGP2-01-SW-A-PUF_N/A-070608 LGP2-01-SW-DFILTER-070302 LGP2-01-SW-D-0703026/21/2007 3/2/2007 3/2/2007 6/8/2007 6/8/2007 3/2/2007 3/2/2007WW W W W W W2.1--2.6-- -- --2.42.4--2.8-- -- --2.85 U -- 5 U -- -- -- 5 U-- 0.00143 U 0.00171 U 0.00315 U 0.00172 U 0.00165 U 0.00108 U--0.00699 J0.00362 U 0.00864 U 0.00406 U 0.00672 U 0.0162 U--0.0148 J0.00474 U 0.00696 U 0.00862 U 0.00507 U 0.00214 U--0.0377 J0.00486 U 0.0125 U 0.00878 U 0.00625 U 0.00211 U--0.0287 J0.0049 U 0.00794 U 0.00953 U 0.00625 U 0.00218 U--0.33 0.00853 J 0.1470.011 U0.103 0.0142 J--1.04 0.0676 J 1.02 0.0597 J 1.09 0.0656 J-- 0.00412 UJ 0.00183 U0.00462 J0.00147 U0.003 J 0.00172 J--0.0113 J0.00162 U 0.00428 U 0.00325 U 0.00625 U 0.00216 U--0.0232 J0.00143 U 0.00384 U 0.00281 U 0.00223 U 0.00206 U--0.0374 J0.00625 U 0.00188 U 0.00625 U 0.00625 U 0.000954 U--0.0497 J0.00625 U 0.00186 U 0.00124 U 0.00625 U 0.00625 U--0.07250.0013 U 0.0125 U 0.00138 U 0.00625 U 0.00625 U--0.0249 J0.00625 U 0.00262 U0.00723 J0.00113 U 0.00122 U--0.182 0.0097 J 0.0304 J0.00625 U0.0148 J0.00625 U--0.06680.00625 U 0.00343 U 0.00202 U 0.00199 U 0.00132 U--0.33 J 0.184 0.0889 J0.0065 U0.0338 J0.0125 U--2.26 0.27 1.29 0.0669 1.24 0.0815--0.0608 0.000131 0.00518 0.000729 0.00336 0.00174--0.0488 0.000131 0.000793 0.000729 0.000513 0.000107--0.0521 0.000207 0.00235 0.000729 0.00159 0.000321--0.0608 0.000131 0.00518 0.000729 0.00336 0.00174--0.0488 0.000131 0.000793 0.000729 0.000513 0.000107--0.0475 0.000258 0.00257 0.000741 0.00182 0.00033420 U -- 20 UJ -- -- -- 20 UJ20 U -- 20 U -- -- -- 20 U20 U -- 20 U -- -- -- 20 U20 U -- 20 UJ -- -- -- 20 UJ20 U -- 20 U -- -- -- 20 U20 U -- 20 UJ -- -- -- 20 UJ20 U -- 20 U -- -- -- 20 U20 U -- 20 U -- -- -- 20 U20 U -- 20 U -- -- -- 20 U20 U -- 20 U -- -- -- 20 U0.005 U -- 0.005 U -- -- -- 0.005 U0.005 U -- 0.005 U -- -- -- 0.005 U0.005 U -- 0.005 U -- -- -- 0.005 U0.01 U -- 0.01 U -- -- -- 0.01 U0.005 U -- 0.005 U -- -- -- 0.005 U0.005 U -- 0.005 U -- -- -- 0.005 U0.005 U -- 0.005 U -- -- -- 0.005 UHighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring3of14January2008050297‐01Table 3Summary of Chemical and Conventional AnalysesSampling CategorySample LocationSample IdentificationSample DateSample MatrixTetrachloroguaiacol3,4,5-Trichlorocatechol3,4,6-TrichlorocatecholTetrachlorocatecholTrichlorosyringolChlorophenols toxic unit sumRetene (μg/L)Retenebeta-Sitosterol (μg/L)beta-SitosterolVOCs (μg/L)Chloroform2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersLGP-01 LGP-01 LGP-01 LGP-01 LGP-01 LGP-01 LGP-01LGP2-01-D-070621 LGP2-01-SW-A FILTER-070302 LGP2-01-SW-A-070302 LGP2-01-SW-A-FILTER-070608 LGP2-01-SW-A-PUF_N/A-070608 LGP2-01-SW-DFILTER-070302 LGP2-01-SW-D-0703026/21/2007 3/2/2007 3/2/2007 6/8/2007 6/8/2007 3/2/2007 3/2/2007WW W W W W W0.01 U -- 0.01 U -- -- -- 0.01 U0.01 U -- 0.01 U -- -- -- 0.01 U0.01 U -- 0.01 U -- -- -- 0.01 U0.01 U -- 0.01 U -- -- -- 0.01 U0.005 U -- 0.005 U -- -- -- 0.005 U1 U -- 0.059 U -- -- -- 0.052 U0.37 J--0.29 J-- -- --0.5 J0.5 U -- 0.5 U -- -- -- 0.5 UHighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring4of14January2008050297‐01Table 3Summary of Chemical and Conventional AnalysesSampling CategorySample LocationSample IdentificationSample DateSample MatrixConventionals (mg/L)Dissolved organic carbonTotal organic carbonTotal suspended solidsDioxin/Furans (pg/L)2,3,7,8-TCDD1,2,3,7,8-PeCDD1,2,3,4,7,8-HxCDD1,2,3,6,7,8-HxCDD1,2,3,7,8,9-HxCDD1,2,3,4,6,7,8-HpCDDOCDD2,3,7,8-TCDF1,2,3,7,8-PeCDF2,3,4,7,8-PeCDF1,2,3,4,7,8-HxCDF1,2,3,6,7,8-HxCDF2,3,4,6,7,8-HxCDF1,2,3,7,8,9-HxCDF1,2,3,4,6,7,8-HpCDF1,2,3,4,7,8,9-HpCDFOCDFTotal Dioxin/FuranTotal Dioxin/Furan TEQ 1998 (Bird)Total Dioxin/Furan TEQ 1998 (Fish)Total Dioxin/Furan TEQ 1998 (Mammal)Total Dioxin/Furan TEQ (Bird)Total Dioxin/Furan TEQ (Fish)Total Dioxin/Furan TEQ (Mammal)Resin Acids (μg/L)Linoleic AcidOleic Acid/Linolenic AcidPimaric acidIsopimaric acidDehydroabietic acidAbietic acid9,10-Dichlorostearic Acid14-Chlorodehydroabietic acid12-Chlorodehydroabietic acidDichlorodehydroabietic acidPhenols (μg/L)2,4,5-Trichlorophenol2,4,6-Trichlorophenol2,3,4,6-TetrachlorophenolPentachlorophenol3,4,5-Trichloroguaiacol3,4,6-Trichloroguaiacol4,5,6-Trichloroguaiacol2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersLGP-01 LGP-01 LGP-06 LGP-06 LGP-06 LGP-06 LGP-06LGP2-01-SW-D-FILTER-070608 LGP2-01-SW-D-PUF_N/A-070608 LGP2-02-070621 LGP2-02-SW-A FILTER-070301 LGP2-02-SW-A-070301 LGP2-02-SW-A-FILTER-070607 LGP2-02-SW-A-PUF_N/A-0706076/8/2007 6/8/2007 6/21/2007 3/1/2007 3/1/2007 6/7/2007 6/7/2007W W WW W W W-- --2.2--2.4-- ---- --2.3--2.7-- ---- --7-- 5 U -- --0.00566 U 0.00178 U -- 0.00199 U 0.0007 U 0.00396 U 0.00225 U0.00961 U 0.00469 U -- 0.00279 U 0.00826 U 0.00702 U 0.00585 U0.00606 U 0.0142 U -- 0.00514 U 0.002 U 0.00682 U 0.00874 U0.0132 J0.0136 U -- 0.00625 U 0.00193 U 0.00704 U 0.0091 U0.0125 U 0.0154 U -- 0.00528 U 0.0019 U 0.00785 U 0.00993 U0.3160.00842 U --0.106 0.0098 J 0.1620.0313 U2.05 0.0223 J--0.732 0.0359 J 1.24 0.068 J0.00662 J0.00214 U -- 0.00159 U0.0024 J 0.00374 J0.00274 U0.0125 U 0.00371 U -- 0.00566 U 0.00256 U 0.00334 U 0.00519 U0.0125 U 0.00338 U -- 0.00539 U 0.00625 U 0.00316 U 0.00447 U0.0125 U 0.00198 U -- 0.000693 U 0.000695 U 0.0125 U 0.0033 U0.0125 U 0.00198 U -- 0.000594 U 0.000634 U 0.0125 U 0.00311 U0.0125 U 0.00211 U -- 0.000665 U 0.00625 U 0.00259 U 0.00365 U0.00272 U 0.00295 U -- 0.000781 U 0.000925 U 0.00313 U 0.00479 U0.0455 J0.00397 U --0.0122 J0.00625 U0.0394 J0.00342 U0.00667 U 0.00608 U -- 0.00256 U 0.00266 U 0.00609 U 0.00505 U0.16 J0.0127 U --0.0244 J0.0068 U0.0995 J0.0153 U2.59 0.0223--0.875 0.0481 1.54 0.0680.00774 0.00000223--0.000304 0.00241 0.00443 0.00000680.00146 0.00000223--0.000304 0.000133 0.000877 0.00000680.00582 0.00000223--0.00126 0.000342 0.00252 0.00000680.00774 0.00000223--0.000304 0.00241 0.00443 0.00000680.00146 0.00000223--0.000304 0.000133 0.000877 0.00000680.00626 0.00000669--0.00141 0.000349 0.00279 0.0000204-- --4.4 J-- 20 UJ -- ---- -- 20 U -- 20 U -- ---- -- 20 U -- 20 U -- ---- -- 20 U -- 20 UJ -- ---- -- 20 U -- 20 U -- ---- -- 20 U -- 20 UJ -- ---- -- 20 U -- 20 U -- ---- -- 20 U -- 20 U -- ---- -- 20 U -- 20 U -- ---- -- 20 U -- 20 U -- ---- -- 0.005 U -- 0.005 U -- ---- -- 0.005 U -- 0.005 U -- ---- -- 0.005 U -- 0.005 U -- ---- -- 0.01 U -- 0.01 U -- ---- -- 0.005 U -- 0.005 U -- ---- -- 0.005 U -- 0.005 U -- ---- -- 0.005 U -- 0.005 U -- --HighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring5of14January2008050297‐01Table 3Summary of Chemical and Conventional AnalysesSampling CategorySample LocationSample IdentificationSample DateSample MatrixTetrachloroguaiacol3,4,5-Trichlorocatechol3,4,6-TrichlorocatecholTetrachlorocatecholTrichlorosyringolChlorophenols toxic unit sumRetene (μg/L)Retenebeta-Sitosterol (μg/L)beta-SitosterolVOCs (μg/L)Chloroform2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersLGP-01 LGP-01 LGP-06 LGP-06 LGP-06 LGP-06 LGP-06LGP2-01-SW-D-FILTER-070608 LGP2-01-SW-D-PUF_N/A-070608 LGP2-02-070621 LGP2-02-SW-A FILTER-070301 LGP2-02-SW-A-070301 LGP2-02-SW-A-FILTER-070607 LGP2-02-SW-A-PUF_N/A-0706076/8/2007 6/8/2007 6/21/2007 3/1/2007 3/1/2007 6/7/2007 6/7/2007W W WW W W W-- -- 0.01 U -- 0.01 U -- ---- -- 0.01 U -- 0.01 U -- ---- -- 0.01 U -- 0.01 U -- ---- -- 0.01 U -- 0.01 U -- ---- -- 0.005 U -- 0.005 U -- ---- -- 1 U -- 0.054 U -- ---- --0.41 J--0.44 J-- ---- -- 0.5 U -- 0.5 U -- --HighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring6of14January2008050297‐01Table 3Summary of Chemical and Conventional AnalysesSampling CategorySample LocationSample IdentificationSample DateSample MatrixConventionals (mg/L)Dissolved organic carbonTotal organic carbonTotal suspended solidsDioxin/Furans (pg/L)2,3,7,8-TCDD1,2,3,7,8-PeCDD1,2,3,4,7,8-HxCDD1,2,3,6,7,8-HxCDD1,2,3,7,8,9-HxCDD1,2,3,4,6,7,8-HpCDDOCDD2,3,7,8-TCDF1,2,3,7,8-PeCDF2,3,4,7,8-PeCDF1,2,3,4,7,8-HxCDF1,2,3,6,7,8-HxCDF2,3,4,6,7,8-HxCDF1,2,3,7,8,9-HxCDF1,2,3,4,6,7,8-HpCDF1,2,3,4,7,8,9-HpCDFOCDFTotal Dioxin/FuranTotal Dioxin/Furan TEQ 1998 (Bird)Total Dioxin/Furan TEQ 1998 (Fish)Total Dioxin/Furan TEQ 1998 (Mammal)Total Dioxin/Furan TEQ (Bird)Total Dioxin/Furan TEQ (Fish)Total Dioxin/Furan TEQ (Mammal)Resin Acids (μg/L)Linoleic AcidOleic Acid/Linolenic AcidPimaric acidIsopimaric acidDehydroabietic acidAbietic acid9,10-Dichlorostearic Acid14-Chlorodehydroabietic acid12-Chlorodehydroabietic acidDichlorodehydroabietic acidPhenols (μg/L)2,4,5-Trichlorophenol2,4,6-Trichlorophenol2,3,4,6-TetrachlorophenolPentachlorophenol3,4,5-Trichloroguaiacol3,4,6-Trichloroguaiacol4,5,6-Trichloroguaiacol2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersLGP-09 LGP-09 LGP-09 LGP-09 LGP-09 LGP-11 LGP-11LGP2-03-070621 LGP2-03-SW-A FILTER-070301 LGP2-03-SW-A-070301 LGP2-03-SW-A-FILTER-070607 LGP2-03-SW-A-PUF_N/A-070607 LGP2-04-070621 LGP2-04-SW-A FILTER-0702286/21/2007 3/1/2007 3/1/2007 6/7/2007 6/7/2007 6/21/2007 2/28/2007WW W W W WW2.3--2.2-- --2.2--2.5--2.4-- --2.3--5 U -- 5 U -- -- 5 U ---- 0.00116 U 0.00258 U 0.00565 U 0.00371 U -- 0.00167 U-- 0.00111 U 0.0113 U 0.013 U 0.00254 U -- 0.00234 U-- 0.00342 U 0.00374 U 0.0106 U 0.00763 U -- 0.003 U-- 0.00339 U 0.00383 U0.0173 J0.00782 U -- 0.00625 U-- 0.00625 U 0.00389 U 0.0123 U 0.00842 U -- 0.00303 U--0.0546 J 0.0101 J 0.4110.00778 U --0.131--0.546 0.0477 J 2.36 0.0519 J--0.952-- 0.00255 U 0.00167 U 0.00536 U 0.00242 U --0.00275 J-- 0.00409 U 0.00294 U 0.0107 U 0.00651 U -- 0.00366 U-- 0.00378 U 0.0028 U 0.0101 U 0.00576 U -- 0.00302 U-- 0.000811 U 0.000903 U 0.00224 U 0.00203 U -- 0.00625 U-- 0.000781 U 0.000806 U 0.0125 U 0.00192 U -- 0.00625 U-- 0.000875 U 0.000932 U 0.00222 U 0.00212 U -- 0.00098 U-- 0.00106 U 0.00111 U 0.00409 U 0.00277 U -- 0.00118 U--0.0124 J0.00625 U0.0428 J0.00232 U --0.0188 J-- 0.0017 U 0.00285 U 0.0582 UJ 0.00351 U -- 0.00253 U--0.0298 J0.0137 U 0.925 UJ 0.0147 U --0.0422 J--0.643 0.0578 2.83 0.0519--1.15--0.000236 0.0000149 0.00125 0.00000519--0.00317--0.000236 0.0000149 0.00125 0.00000519--0.000556--0.000728 0.000106 0.0065 0.00000519--0.00187--0.000236 0.0000149 0.00125 0.00000519--0.00317--0.000236 0.0000149 0.00125 0.00000519--0.000556--0.000843 0.000115 0.00698 0.0000156--0.0020720 U -- 20 UJ -- -- 20 U --20 U -- 20 U -- -- 20 U --20 U -- 20 U -- -- 20 U --20 U -- 20 UJ -- -- 20 U --20 U -- 20 U -- -- 20 U --20 U -- 20 UJ -- -- 20 U --20 U -- 20 U -- -- 20 U --20 U -- 20 U -- -- 20 U --20 U -- 20 U -- -- 20 U --20 U -- 20 U -- -- 20 U --0.005 U -- 0.005 U -- -- 0.005 U --0.005 U -- 0.005 U -- -- 0.005 U --0.005 U -- 0.005 U -- -- 0.005 U --0.01 U -- 0.01 U -- -- 0.01 U --0.005 U -- 0.005 U -- -- 0.005 U --0.005 U -- 0.005 U -- -- 0.005 U --0.005 U -- 0.005 U -- -- 0.005 U --HighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring7of14January2008050297‐01Table 3Summary of Chemical and Conventional AnalysesSampling CategorySample LocationSample IdentificationSample DateSample MatrixTetrachloroguaiacol3,4,5-Trichlorocatechol3,4,6-TrichlorocatecholTetrachlorocatecholTrichlorosyringolChlorophenols toxic unit sumRetene (μg/L)Retenebeta-Sitosterol (μg/L)beta-SitosterolVOCs (μg/L)Chloroform2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersLGP-09 LGP-09 LGP-09 LGP-09 LGP-09 LGP-11 LGP-11LGP2-03-070621 LGP2-03-SW-A FILTER-070301 LGP2-03-SW-A-070301 LGP2-03-SW-A-FILTER-070607 LGP2-03-SW-A-PUF_N/A-070607 LGP2-04-070621 LGP2-04-SW-A FILTER-0702286/21/2007 3/1/2007 3/1/2007 6/7/2007 6/7/2007 6/21/2007 2/28/2007WW W W W WW0.01 U -- 0.01 U -- -- 0.01 U --0.01 U -- 0.01 U -- -- 0.01 U --0.01 U -- 0.01 U -- -- 0.01 U --0.01 U -- 0.01 U -- -- 0.01 U --0.005 U -- 0.005 U -- -- 0.005 U --1 U -- 0.05 U -- -- 1 U --0.35 J--0.42 J-- --0.21 J--0.5 U -- 0.5 U -- -- 0.5 U --HighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring8of14January2008050297‐01Table 3Summary of Chemical and Conventional AnalysesSampling CategorySample LocationSample IdentificationSample DateSample MatrixConventionals (mg/L)Dissolved organic carbonTotal organic carbonTotal suspended solidsDioxin/Furans (pg/L)2,3,7,8-TCDD1,2,3,7,8-PeCDD1,2,3,4,7,8-HxCDD1,2,3,6,7,8-HxCDD1,2,3,7,8,9-HxCDD1,2,3,4,6,7,8-HpCDDOCDD2,3,7,8-TCDF1,2,3,7,8-PeCDF2,3,4,7,8-PeCDF1,2,3,4,7,8-HxCDF1,2,3,6,7,8-HxCDF2,3,4,6,7,8-HxCDF1,2,3,7,8,9-HxCDF1,2,3,4,6,7,8-HpCDF1,2,3,4,7,8,9-HpCDFOCDFTotal Dioxin/FuranTotal Dioxin/Furan TEQ 1998 (Bird)Total Dioxin/Furan TEQ 1998 (Fish)Total Dioxin/Furan TEQ 1998 (Mammal)Total Dioxin/Furan TEQ (Bird)Total Dioxin/Furan TEQ (Fish)Total Dioxin/Furan TEQ (Mammal)Resin Acids (μg/L)Linoleic AcidOleic Acid/Linolenic AcidPimaric acidIsopimaric acidDehydroabietic acidAbietic acid9,10-Dichlorostearic Acid14-Chlorodehydroabietic acid12-Chlorodehydroabietic acidDichlorodehydroabietic acidPhenols (μg/L)2,4,5-Trichlorophenol2,4,6-Trichlorophenol2,3,4,6-TetrachlorophenolPentachlorophenol3,4,5-Trichloroguaiacol3,4,6-Trichloroguaiacol4,5,6-Trichloroguaiacol2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersLGP-11 LGP-11 LGP-11 LGP-13 LGP-13 LGP-13 LGP-13LGP2-04-SW-A-070302 LGP2-04-SW-A-FILTER-070607 LGP2-04-SW-A-PUF_N/A-070607 LGP2-05-070621 LGP2-05-SW-A FILTER-070228 LGP2-05-SW-A-070302 LGP2-05-SW-A-FILTER-0706072/28/2007 6/7/2007 6/7/2007 6/21/2007 2/28/2007 2/28/2007 6/7/2007W W W WW W W2.1-- --2.1--2.6--2.7-- --2.3--3.0--5-- -- 5 U -- 5 U --0.00224 U 0.00581 U 0.00184 U -- 0.00167 U 0.0016 U 0.00301 U0.00644 U 0.00743 U 0.00406 U -- 0.00246 U 0.00926 U 0.00579 U0.00411 U 0.0125 U 0.00622 U -- 0.00398 U 0.00261 U 0.00388 U0.00429 U0.0293 J0.00633 U -- 0.00396 U 0.00257 U 0.0125 U0.00417 U0.0179 J0.00687 U -- 0.00394 U 0.00263 U 0.0042 U0.015 J 0.7980.00731 U --0.0788 0.0106 J 0.1330.0741 J 5.47 0.0503 J--0.729 0.0643 J 0.9930.00256 J 0.00731 J0.00184 U -- 0.00174 U 0.00117 U 0.00276 U0.00274 U 0.0125 U 0.00323 U -- 0.00555 U 0.00172 U 0.00228 U0.00625 U 0.0125 U 0.00298 U -- 0.00493 U 0.00159 U 0.00198 U0.00625 U 0.0125 U 0.00259 U -- 0.00122 U 0.000542 U 0.0125 U0.00625 U 0.0125 U 0.00245 U -- 0.00114 U 0.000505 U 0.0125 U0.00625 U 0.0125 U 0.00288 U -- 0.00131 U 0.00625 U 0.00188 U0.00188 U 0.00155 U 0.0036 U -- 0.00151 U 0.000671 U 0.00243 U0.00779 J 0.102 J0.00304 U --0.011 J0.00625 U0.0276 J0.00198 U 0.00564 U 0.00456 U -- 0.00225 U 0.00383 U 0.00297 U0.0162 J 0.181 J0.0204 U --0.0195 J0.00849 U0.068 J0.116 6.61 0.0503--0.838 0.0749 1.220.00266 0.0118 0.00000503--0.000264 0.000017 0.0005150.00023 0.00322 0.00000503--0.000264 0.000017 0.0005150.000493 0.015 0.00000503--0.000973 0.000112 0.001710.00266 0.0118 0.00000503--0.000264 0.000017 0.0005150.00023 0.00322 0.00000503--0.000264 0.000017 0.0005150.000511 0.0161 0.0000151--0.00112 0.000125 0.0019220 UJ -- -- 20 U -- 20 UJ --20 U -- -- 20 U -- 20 U --20 U -- -- 20 U -- 20 U --20 UJ -- -- 20 U -- 20 UJ --20 U -- -- 20 U -- 20 U --20 UJ -- -- 20 U -- 20 UJ --20 U -- -- 20 U -- 20 U --20 U -- -- 20 U -- 20 U --20 U -- -- 20 U -- 20 U --20 U -- -- 20 U -- 20 U --0.005 U -- -- 0.005 U -- 0.005 U --0.005 U -- -- 0.005 U -- 0.005 U --0.005 U -- -- 0.005 U -- 0.005 U --0.01 U -- -- 0.01 U -- 0.01 U --0.005 U -- -- 0.005 U -- 0.005 U --0.005 U -- -- 0.005 U -- 0.005 U --0.005 U -- -- 0.005 U -- 0.005 U --HighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring9of14January2008050297‐01Table 3Summary of Chemical and Conventional AnalysesSampling CategorySample LocationSample IdentificationSample DateSample MatrixTetrachloroguaiacol3,4,5-Trichlorocatechol3,4,6-TrichlorocatecholTetrachlorocatecholTrichlorosyringolChlorophenols toxic unit sumRetene (μg/L)Retenebeta-Sitosterol (μg/L)beta-SitosterolVOCs (μg/L)Chloroform2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersLGP-11 LGP-11 LGP-11 LGP-13 LGP-13 LGP-13 LGP-13LGP2-04-SW-A-070302 LGP2-04-SW-A-FILTER-070607 LGP2-04-SW-A-PUF_N/A-070607 LGP2-05-070621 LGP2-05-SW-A FILTER-070228 LGP2-05-SW-A-070302 LGP2-05-SW-A-FILTER-0706072/28/2007 6/7/2007 6/7/2007 6/21/2007 2/28/2007 2/28/2007 6/7/2007W W W WW W W0.01 U -- -- 0.01 U -- 0.01 U --0.01 U -- -- 0.01 U -- 0.01 U --0.01 U -- -- 0.01 U -- 0.01 U --0.01 U -- -- 0.01 U -- 0.01 U --0.005 U -- -- 0.005 U -- 0.005 U --0.053 U -- -- 1 U -- 0.05 U --0.40 J-- --0.19 J--0.32 J--0.5 U -- -- 0.5 U -- 0.5 U --HighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring10of14January2008050297‐01Table 3Summary of Chemical and Conventional AnalysesSampling CategorySample LocationSample IdentificationSample DateSample MatrixConventionals (mg/L)Dissolved organic carbonTotal organic carbonTotal suspended solidsDioxin/Furans (pg/L)2,3,7,8-TCDD1,2,3,7,8-PeCDD1,2,3,4,7,8-HxCDD1,2,3,6,7,8-HxCDD1,2,3,7,8,9-HxCDD1,2,3,4,6,7,8-HpCDDOCDD2,3,7,8-TCDF1,2,3,7,8-PeCDF2,3,4,7,8-PeCDF1,2,3,4,7,8-HxCDF1,2,3,6,7,8-HxCDF2,3,4,6,7,8-HxCDF1,2,3,7,8,9-HxCDF1,2,3,4,6,7,8-HpCDF1,2,3,4,7,8,9-HpCDFOCDFTotal Dioxin/FuranTotal Dioxin/Furan TEQ 1998 (Bird)Total Dioxin/Furan TEQ 1998 (Fish)Total Dioxin/Furan TEQ 1998 (Mammal)Total Dioxin/Furan TEQ (Bird)Total Dioxin/Furan TEQ (Fish)Total Dioxin/Furan TEQ (Mammal)Resin Acids (μg/L)Linoleic AcidOleic Acid/Linolenic AcidPimaric acidIsopimaric acidDehydroabietic acidAbietic acid9,10-Dichlorostearic Acid14-Chlorodehydroabietic acid12-Chlorodehydroabietic acidDichlorodehydroabietic acidPhenols (μg/L)2,4,5-Trichlorophenol2,4,6-Trichlorophenol2,3,4,6-TetrachlorophenolPentachlorophenol3,4,5-Trichloroguaiacol3,4,6-Trichloroguaiacol4,5,6-Trichloroguaiacol2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersLGP-13 LGP-EFF LGP-EFF LGP-EFF LGP-EFF LGP-EFF LGP-EFFLGP2-05-SW-A-PUF_N/A-070607 LGP2-EFF-070621 LGP2-EFF-AQ-A FILTER-070302 LGP2-EFF-AQ-A-070302 LGP2-EFF-AQ-A-FILTER-070606 LGP2-EFF-AQ-A-PUF_N/A-070606 LGP2-EFF-AQ-D-0703026/7/2007 6/21/2007 3/2/2007 3/2/2007 6/6/2007 6/6/2007 3/2/2007W W W W W W WG--97.6--111-- --108--112--143-- --142--43--60-- --580.00386 U --0.00498 J0.0037 U0.0148 J0.00217 U --0.00304 U -- 0.00625 U 0.00294 U 0.0125 U 0.00334 U --0.00823 U --0.00689 J0.0039 U 0.0125 U 0.00569 U --0.00829 U -- 0.00625 U 0.00625 U 0.0125 U 0.00569 U --0.00922 U --0.007 J0.00625 U 0.0125 U 0.00635 U --0.00625 U --0.0833 0.0153 J 0.107 J 0.0161 J--0.0452 J--0.494 0.0461 J 0.743 0.0303 J--0.00187 U --0.0448 0.0161 0.108 0.0102 J--0.00736 U --0.00848 J0.00625 U 0.0125 U 0.00455 U --0.0067 U --0.0161 J0.00625 U0.013 J0.00422 U --0.00146 U --0.00895 J0.00129 U 0.0125 U 0.00188 U --0.00141 U -- 0.00625 U 0.00127 U 0.00131 U 0.00188 U --0.00154 U --0.00973 J0.00138 U 0.00144 U 0.00198 U --0.0021 U -- 0.00625 U 0.00158 U 0.00168 U 0.00271 U --0.00275 U --0.0186 J0.00625 U0.0147 J0.00281 U --0.00421 U -- 0.00209 U 0.00242 U 0.00249 U 0.00423 U --0.0248 U --0.017 J0.0101 U0.0309 J0.0197 U --0.0452--0.72 0.0775 1.03 0.0566--0.00000452--0.07 0.0161 0.136 0.0102--0.00000452--0.0214 0.000825 0.027 0.000529--0.00000452--0.0223 0.00177 0.0334 0.00118--0.00000452--0.07 0.0161 0.136 0.0102--0.00000452--0.0214 0.000825 0.027 0.000529--0.0000136--0.019 0.00178 0.0309 0.00119----54 J--59 J-- --17 J--74 J--23-- --25--4.2 J-- 20 U -- -- 20 U--13 J-- 20 UJ -- -- 20 UJ--9.3 J--13 J-- -- 20 U--11 J-- 20 U -- -- 20 UJ-- 20 U -- 20 U -- -- 20 U-- 20 U -- 20 U -- -- 20 U-- 20 U -- 20 U -- -- 20 U-- 20 U -- 20 U -- -- 20 U-- 0.005 U -- 0.005 U -- -- 0.005 U--0.21--0.15-- --0.13-- 0.005 U -- 0.005 U -- -- 0.005 U-- 0.01 U -- 0.01 U -- -- 0.01 U--0.031--0.02 J-- --0.019-- 0.005 U --0.016-- --0.017--0.052--0.093-- --0.091HighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring11of14January2008050297‐01Table 3Summary of Chemical and Conventional AnalysesSampling CategorySample LocationSample IdentificationSample DateSample MatrixTetrachloroguaiacol3,4,5-Trichlorocatechol3,4,6-TrichlorocatecholTetrachlorocatecholTrichlorosyringolChlorophenols toxic unit sumRetene (μg/L)Retenebeta-Sitosterol (μg/L)beta-SitosterolVOCs (μg/L)Chloroform2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersLGP-13 LGP-EFF LGP-EFF LGP-EFF LGP-EFF LGP-EFF LGP-EFFLGP2-05-SW-A-PUF_N/A-070607 LGP2-EFF-070621 LGP2-EFF-AQ-A FILTER-070302 LGP2-EFF-AQ-A-070302 LGP2-EFF-AQ-A-FILTER-070606 LGP2-EFF-AQ-A-PUF_N/A-070606 LGP2-EFF-AQ-D-0703026/7/2007 6/21/2007 3/2/2007 3/2/2007 6/6/2007 6/6/2007 3/2/2007W W W W W W WG--0.012--0.011-- --0.012-- 0.01 U -- 0.01 U -- --0.034-- 0.01 U -- 0.01 U -- -- 0.01 U-- 0.01 U -- 0.01 U -- -- 0.01 U-- 0.005 U -- 0.005 U -- -- 0.005 U0.305 0.290.303-- 1 U -- 0.052 U -- -- 0.054 U--11 J--7.8 J-- --4.5 J--1.3--1.0-- --1.0HighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring12of14January2008050297‐01Table 3Summary of Chemical and Conventional AnalysesSampling CategorySample LocationSample IdentificationSample DateSample MatrixConventionals (mg/L)Dissolved organic carbonTotal organic carbonTotal suspended solidsDioxin/Furans (pg/L)2,3,7,8-TCDD1,2,3,7,8-PeCDD1,2,3,4,7,8-HxCDD1,2,3,6,7,8-HxCDD1,2,3,7,8,9-HxCDD1,2,3,4,6,7,8-HpCDDOCDD2,3,7,8-TCDF1,2,3,7,8-PeCDF2,3,4,7,8-PeCDF1,2,3,4,7,8-HxCDF1,2,3,6,7,8-HxCDF2,3,4,6,7,8-HxCDF1,2,3,7,8,9-HxCDF1,2,3,4,6,7,8-HpCDF1,2,3,4,7,8,9-HpCDFOCDFTotal Dioxin/FuranTotal Dioxin/Furan TEQ 1998 (Bird)Total Dioxin/Furan TEQ 1998 (Fish)Total Dioxin/Furan TEQ 1998 (Mammal)Total Dioxin/Furan TEQ (Bird)Total Dioxin/Furan TEQ (Fish)Total Dioxin/Furan TEQ (Mammal)Resin Acids (μg/L)Linoleic AcidOleic Acid/Linolenic AcidPimaric acidIsopimaric acidDehydroabietic acidAbietic acid9,10-Dichlorostearic Acid14-Chlorodehydroabietic acid12-Chlorodehydroabietic acidDichlorodehydroabietic acidPhenols (μg/L)2,4,5-Trichlorophenol2,4,6-Trichlorophenol2,3,4,6-TetrachlorophenolPentachlorophenol3,4,5-Trichloroguaiacol3,4,6-Trichloroguaiacol4,5,6-Trichloroguaiacol2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersSR-REF SR-REF SR-REF SR-REF SR-REFLGP2-SR-REF-070621 SR-REF-SW-A FILTER-070227 SR-REF-SW-A-070227 SR-REF-SW-A-FILTER-070606 SR-REF-SW-A-PUF_N/A-0706066/21/2007 2/27/2007 2/27/2007 6/6/2007 6/6/2007WWWW W2.1--2.4-- --2.2--2.3-- --5 U -- 5 UJ -- ---- 0.00121 U 0.00163 U 0.00404 U 0.00363 U-- 0.0018 U 0.00936 U 0.00383 U 0.00277 U-- 0.00436 U 0.00272 U 0.0125 U 0.00456 U-- 0.00405 U 0.00272 U 0.0125 U 0.00481 U-- 0.00427 U 0.00278 U 0.0125 U 0.00551 U--0.0597 J 0.0129 J 0.1290.0055 U--0.428 0.0632 J 1.04 0.0381 J-- 0.00359 U 0.00133 U 0.0025 U 0.00167 U-- 0.00607 U 0.00251 U 0.0019 U 0.00244 U-- 0.00562 U 0.00235 U 0.00173 U 0.00209 U-- 0.000643 U 0.0014 U 0.00163 U 0.00161 U-- 0.000621 U 0.00133 U 0.00155 U 0.0016 U-- 0.000702 U 0.00143 U 0.00162 U 0.00173 U-- 0.00086 U 0.00162 U 0.00195 U 0.00223 U--0.00812 J0.00625 U0.0263 J0.00242 U-- 0.00189 U 0.00236 U 0.00344 U 0.00355 U--0.0231 J0.0125 U0.0696 J0.0201 U--0.519 0.0761 1.26 0.0381--0.000186 0.0000192 0.000503 0.00000381--0.000186 0.0000192 0.000503 0.00000381--0.000723 0.000135 0.00166 0.00000381--0.000186 0.0000192 0.000503 0.00000381--0.000186 0.0000192 0.000503 0.00000381--0.000814 0.000148 0.00189 0.000011413 J-- 20 UJ -- --20 U -- 20 U -- --20 U -- 20 U -- --20 U -- 20 UJ -- --20 U -- 20 U -- --20 U -- 20 UJ -- --20 U -- 20 U -- --20 U -- 20 U -- --20 U -- 20 U -- --20 U -- 20 U -- --0.005 U -- 0.005 U -- --0.005 U -- 0.005 U -- --0.005 U -- 0.005 U -- --0.01 U -- 0.01 U -- --0.005 U -- 0.005 U -- --0.005 U -- 0.005 U -- --0.005 U -- 0.005 U -- --HighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring13of14January2008050297‐01Table 3Summary of Chemical and Conventional AnalysesSampling CategorySample LocationSample IdentificationSample DateSample MatrixTetrachloroguaiacol3,4,5-Trichlorocatechol3,4,6-TrichlorocatecholTetrachlorocatecholTrichlorosyringolChlorophenols toxic unit sumRetene (μg/L)Retenebeta-Sitosterol (μg/L)beta-SitosterolVOCs (μg/L)Chloroform2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol Waters 2007 Hi-Vol WatersSR-REF SR-REF SR-REF SR-REF SR-REFLGP2-SR-REF-070621 SR-REF-SW-A FILTER-070227 SR-REF-SW-A-070227 SR-REF-SW-A-FILTER-070606 SR-REF-SW-A-PUF_N/A-0706066/21/2007 2/27/2007 2/27/2007 6/6/2007 6/6/2007WWWW W0.01 U -- 0.01 U -- --0.01 U -- 0.01 U -- --0.01 U -- 0.01 U -- --0.01 U -- 0.01 U -- --0.005 U -- 0.005 U -- --1 U -- 0.05 UJ -- --0.33 J--0.86 J-- --0.5 U -- 0.5 U -- --Notes:DenotesresultabovetoxicitybenchmarkBold=DetectedU=Thecompoundwasanalyzedfor,butwasnotdetected(ʺNon‐detectʺ)atorabovethemethodreportinglimit/methoddetectionlimit.J=Theresultisanestiinatedconcentrationthatislessthanthemethodreportinglimitbutgreaterthanorequaltothemethoddetectionlimit.CR‐REF=ClearwaterReferencestationSR‐REF=SnakeRiverReferencestationLGP=LowerGranitePoolDioxin/FuranTEQispersectionJ,ofpermitID0001163.HighVolumeQuarterlyStudySamplingandAnalysisReportPotlatchNPDESPermitRenewalComplianceMonitoring14of14January2008050297‐01

### Table 4

Statistical Summary of High Volume Water Sample Results by Analyte

Chemical Detection

Frequency Percent

Qualified

as

Estimated Result

Average Max

Detect

Result Min

Detect

Result Max

MDL

Limit Min

MDL

Limit Detected

Standard

Deviation

beta-Sitosterol (μg/L)

beta-Sitosterol 84% 100% 1.37 11.0 0.190 0.120 0.110 3.13

Conventionals (mg/L)

Dissolved organic carbon 100% 5% 12.9 111 0.300 2. 00 0.0400 32.3

Total organic carbon 100% 5% 15.5 143 0.120 2. 00 0.0400 39.8

Total suspended solids 21% 11% 10.0 60.0 5.00 5.00 5.00 27.2

Dissolved organic carbon 100% 0% 108 108 108 1.00 1.00

Total organic carbon 100% 0% 142 142 142 2.00 2.00

Total suspended solids 100% 0% 58.0 58.0 58. 0 5.00 5.00

Dioxin/Furans (pg/L)

1,2,3,4,6,7,8-Hp CDD 78% 36% 0.104 0.798 0.00853 0.171

1,2,3,4,6,7,8-HpCDF 56% 53% 0.0210 0.182 0.00779 0.0409

1,2,3,4,7,8,9-HpCDF 3% 3% 0.00672 0.0668 0.0668

1,2,3,4,7,8-HxCDD 6% 6% 0. 00639 0.0148 0.00689 0.00559

1,2,3,4,7,8-HxCDF 6% 6% 0. 00548 0.0374 0.00895 0.0201

1,2,3,6,7,8-HxCDD 11% 11% 0.00872 0.0377 0.0132 0.0112

1,2,3,6,7,8-HxCDF 3% 3% 0.00539 0.0497 0.0497

1,2,3,7,8,9-HxCDD 8% 8% 0. 00773 0.0287 0.00700 0.0109

1,2,3,7,8,9-HxCDF 6% 6% 0. 00303 0.0249 0.00723 0.0125

1,2,3,7,8-PeCDD 3% 3% 0.00609 0.00699 0.00699

1,2,3,7,8-PeCDF 6% 6% 0. 00521 0.0113 0.00848 0.00199

2,3,4,6,7,8-HxCDF 6% 3% 0. 00568 0.0725 0.00973 0.0444

2,3,4,7,8-PeCDF 8% 8% 0. 00556 0.0232 0.0130 0.00523

2,3,7,8-TCDD 6% 6% 0.003 00 0.0148 0.00498 0.00694

2,3,7,8-TCDF 39% 33% 0. 00747 0.108 0.00172 0.0289

OCDD 100% 50% 0.679 5. 47 0.0223 1.03

OCDF 53% 53% 0.0744 0.330 0.0162 0.0812

Phenols (ng/L)

2,3,4,6-Tetrachlorophenol 0% 0% 5.00 0.830 0.830

2,4,5-Trichlorophenol 0% 0% 5.00 0.370 0.370

2,4,6-Trichlorophenol 11% 0% 23.4 210 150 0.550 0.550 34.6

3,4,5-Trichlorocatechol 0% 0% 10.0 2.80 2.80

3,4,5-Trichloroguaiacol 11% 5% 7.16 31.0 20. 0 0.850 0.850 6.35

3,4,6-Trichlorocatechol 0% 0% 10.0 2.60 2.60

3,4,6-Trichloroguaiacol 5% 0% 5.58 16.0 16. 0 0.290 0.290 0

4,5,6-Trichloroguaiacol 11% 0% 12.1 93.0 52. 0 0.630 0.630 23.7

Pentachlorophenol 0% 0% 10.0 1.30 1.30

Tetrachlorocatechol 0% 0% 10.0 1.00 1.00

Tetrachloroguaiacol 11% 0% 10.2 12.0 11.0 1.40 1.40 0.577

Trichlorosyringol 0% 0% 5.00 0.780 0.780

2,3,4,6-Tetrachlorophenol 0% 0% 5.00 0.830 0.830

2,4,5-Trichlorophenol 0% 0% 5.00 0.370 0.370

High Volume Quarterly Study Sampling and Analysis Report January 2008

Potlatch NPDES Permit Renewal Compliance Monitoring 050297

‐ 01

### Table 4

Statistical Summary of High Volume Water Sample Results by Analyte

Percent

Chemical Detection

Frequency Qualified Max Min Max Min Detected

as Result

Estimated Average Detect

Result Detect

Result MDL

Limit MDL Standard

Limit Deviation

2,4,6-Trichlorophenol 100 % 0% 130 130 130 0.550 0.550 0

3,4,5-Trichlorocatechol 100% 0% 34.0 34.0 34. 0 2.80 2.80 0

3,4,5-Trichloroguaiacol 100% 0% 19.0 19.0 19. 0 0.850 0.850 0

3,4,6-Trichlorocatechol 0% 0% 10.0 2.60 2.60

3,4,6-Trichloroguaiacol 100% 0% 17.0 17.0 17. 0 0.290 0.290 0

4,5,6-Trichloroguaiacol 100% 0% 91.0 91.0 91. 0 0.630 0.630 0

Pentachlorophenol 0% 0% 10.0 1.30 1.30

Tetrachlorocatechol 0% 0% 10.0 1.00 1.00

Tetrachloroguaiacol 100% 0% 12.0 12.0 12. 0 1.40 1.40 0

Trichlorosyringol 0% 0% 5.00 0.780 0.780

Resin Acid (μg/L)

12-Chlorodehydroabietic acid 0% 5% 20.0 2.30 2.30

14-Chlorodehydroabietic acid 0% 5% 20.0 2.40 2.40

3,4,5-Trichloroguaiacol 11% 5% 7.16 31.0 20. 0 0.850 0.850 7.78

9,10-Dichlorostearic Acid 0% 5% 20.0 4.20 4.20

Abietic acid 5% 47% 19.5 11.0 11.0 4.50 4.50 0

Dehydroabietic acid 11% 16% 19.1 13.0 9.30 6.20 6.20 2.14

Dichlorodehydroabietic acid 0% 5% 20.0 7.60 7.60

Isopimaric acid 5% 53% 19.6 13.0 13.0 5.40 5.40 0

Linoleic Acid 26% 68% 21.8 59.0 4.00 3.90 3.90 25.8

Oleic Acid/Linolenic Acid 11% 11% 23.0 74.0 23. 0 6.90 6.90 29.4

Pimaric acid 5% 11% 19.2 4.20 4.20 4.10 4.10 0

Tetrachloroguaiacol 11% 0% 10.2 12.0 11.0 1.40 1.40 0.707

12-Chlorodehydroabietic acid 0% 0% 20.0 2.30 2.30

14-Chlorodehydroabietic acid 0% 0% 20.0 2.40 2.40

3,4,5-Trichloroguaiacol 100% 0% 19.0 19.0 19. 0 0.850 0.850

9,10-Dichlorostearic Acid 0% 0% 20.0 4.20 4.20

Abietic acid 0% 100% 20.0 4.50 4.50

Dehydroabietic acid 0% 0% 20.0 6.20 6.20

Dichlorodehydroabietic acid 0% 0% 20.0 7.60 7.60

Isopimaric acid 0% 100% 20.0 5.40 5.40

Linoleic Acid 100% 100% 17.0 17.0 17.0 3.90 3.90 0

Oleic Acid/Linolenic Acid 100 % 0% 25.0 25.0 25.0 6.90 6.90 0

Pimaric acid 0% 0% 20.0 4.10 4.10

Tetrachloroguaiacol 100% 0% 12.0 12.0 12.0 1.40 1.40

Retene (μg/L)

Retene 0% 11% 0.551 1.00 0.00250

Volatile Organics (μg/L)

Chloroform 16% 0% 0.674 2.50 1.00 0. 140 0.140 0.794

High Volume Quarterly Study Sampling and Analysis Report January 2008

Potlatch NPDES Permit Renewal Compliance Monitoring 050297

‐ 01

# FIGURESS N A K ECLARKSTONCLEARWATER RIVERLOWER GRANITE DAM S N

A

K

E

R

I V E

R W A S H I N GT ON

I D A H OProject Boundary R I V E RSNAKE RIVEROutfallPotlatch Mill0 6Scale in Miles

K:\Jobs\050297-POTLATCH\05029701\05029701-03.dwg FIG 1 Jan 03, 2008 12:52pm cdavidsonFigure 1Vicinity MapPotlatch Pulp and Paper MillNot to ScaleWASHINGTONIDAHOSeattleLewistonClarkstonSource: Google 2007P P P P P P P P P

P P P P P P P P P P P P P P P P P P P P

P

P

P

P P P P P P P P

! .LOWERGRANITEDAM

1 0 0 0 2 0 0 0 1 0 0 0 1 0 0 0

1 0 0 0 2 0 0 0 1000

2 0 0 0

2 0 0 0 1 0 0 0 2 0 0 0 2 0 0 0

2 0 0 0

2 0 0 0 2 0 0 0 1 0 0 0

1 0 0 0 S t e p t o e C a n y o n

l l y

J o h n C a n

y o n C l a y t o n G

u l c h

S o u t h D e a d m a n G u l c h

Y a k aw a w a C a n y o n

K e i t h C a n y o n

W a w a w a i C a n y o n

M a c M u r r a y C a n y o n

B u c k C a n y o n K l u g e C

a n y o n

A l m o t a C r e e k

O f f i e l d C

a n

y o nMATCHLINELGP-01(Sample ID LPG-01)127126125124123122121120119118117116115114113112111110109108!PPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP!.!.!.!.!.!.LGP-13(Sample ID LGP-5)CR-REFSR-REF O N

1 0 0 0

1 0 0 0

2 0 0 0

1 0 0 0 1 0 0 0

1 0 0 0

1 0 0 0 2 0 0 0 1

0 0 0

1 0 0 0 D r y C

r e e k L i n d s a y C r e e k

P a g e C r e e k S t e p t o eMATCHLINELEWISTONCLARKSTONLGP-11(Sample ID LPG-4)LGP-09(Sample ID LPG-03)LGP-06(Sample ID LGP-02)POTLATCHMILLOUTFALL6543210141140139138137136135134133132131130129128127Figure 2Locations of High-Volume Water Sampling StationsPotlatch Pulp and Paper MillLewiston, Idaho0120.5Scale in MilesLEGEND!.Sampling LocationPApprox. River Mile1000-ft Topographic Contour200-ft Topographic ContourStreamRiverNorth American Datum 1983, WashingtonState Plane, South Zone, U.S. feet

J:\Jobs\050297-Potlatch\Maps\2008_01\Fig_2_HighVol.mxd SMS 01/07/2008 11:27 AM

# APPENDIX A

CHAIN-OF-CUSTODY FORMS AND LABORATORY DATA REPORTS

# APPENDIX B

DATA VALIDATION REPORTS