From: "Scott Unze" <Scott.Unze@pacelabs.com> 

To: <jrickun@chorus.net>, Ron Myers/RTP/USEPA/US@EPA, Jeff 

Telander/RTP/USEPA/US@EPA, 

<David.McKeown@hanson.biz>, <Paul.Anderson@hanson.biz>, "Steve Hannan" 

<Steve.Hannan@pacelabs.com> 

Date: 10/20/2010 04:19 PM 

Subject: Re: Fwd: Additional Pace Analytical Laboratory Report 

David, 

 

Attached is a revised dioxin report per your request. 

 

Thanks 

 

*************************************** 

Scott Unze 

Specialty Analytical Project Manager 

Pace Analytical Services, Inc. 

Minneapolis, MN 

(612) 607-6383 

www.pacelabs.com 

 

Pace Minnesota has transitioned to a paperless reporting system. Reports are available via email or online through Pace Port. If you have not registered for Pace Port, Pace's on-line report system, please 

contact your Project Manager or Sales Representative for details. 

>>> Steve Hannan 10/20/2010 9:42 AM >>> 

>>> "McKeown, David (Columbia) NA" <David.McKeown@hanson.biz> 10/20/2010 9:40 AM 

>>> 

Mr. Armstrong: 

 

Related to the Hanson Brick Mineral Wells stack test you conducted on August 17 - 19, 2010, 

Pace Analytical Laboratories will be sending you an additional report containing re-processed data that 

was requested by the EPA. 

 

In addition to the hardcopy report, I have asked that this additional report also be sent via e-mail to you 

while copying the EPA and me. 

 

I just wanted to make you aware of this anticipated report and please let me know if you have any 

further questions. 

 
Mr. Hannan: 

 

Please send an electronic version of the report to the email addresses receiving this message. 

 

Thank you. 

 

J. David McKeown 

Lehigh Hanson 

5100 Brickyard Road 

Columbia, SC 29203 

Tel: 803 691 3121 

Cell: 803 351 0635 

Fax: 803 786 9703 

David.McKeown@Hanson.Biz
This report contains results for EPA Method 23 which is not included in

Pace Analytical Service's, Inc. NELAC scope of accreditation

This report should not be reproduced, except in full,

without the written consent of Pace Analytical Services, Inc.

The results relate only to the samples included in this report.

Report of Laboratory Analysis

www.pacelabs.com

Pace Analytical Services, Inc.

1700 Elm Street

Minneapolis, MN 55414

Phone: 612.607.1700

Fax: 612.607.6444

Tom Armstrong

Armstrong Environmental, Inc.

1748 Hlavek Road

Decatur TX 76234

REPORT OF

LABORATORY

ANALYSIS FOR

PCDD/PCDF

This report has been reviewed by:

Invoicing & Reporting Options:

Report Information:

Report Prepared Date:

October 20, 2010

Pace Project #: 10136336

Sample Receipt Date: 08/23/2010

Client Project #: Hansen Brick

Client Sub PO #: N/A

The report provided has been invoiced as a Level 2

PCDD/PCDF Report. If an upgrade of this report

package is requested, an additional charge may be

applied.

Please review the attached invoice for accuracy and

forward any questions to Scott Unze, your Pace

Project Manager.

State Cert #: T104704192-06-TX

Report Prepared for:

Report No.....10136336_M23 Revision 1 Page 1 of 17

October 20, 2010

Scott Unze, Project Manager

(612) 607-6383

(612) 607-6444 (fax)

scott.unze@pacelabs.com
Pace Analytical Services, Inc.

1700 Elm Street

Minneapolis, MN 55414

Phone: 612.607.1700

Fax: 612.607.6444

REPORT OF LABORATORY ANALYSIS

This report shall not be reproduced, except in full,

without the written consent of Pace Analytical Services, Inc.

This report presents the results from the analyses performed on four samples submitted by a

representative of Armstrong Environmental, Inc. The samples were analyzed for the presence or

absence of polychlorodibenzo-p-dioxins (PCDDs) and polychlorodibenzofurans (PCDFs) using a modified

version of USEPA Method 23. This report was revised to include detection limits corresponding to

concentrations of 2.5 times the background instrument noise levels.

The recoveries of the isotopically labeled PCDD/PCDF internal standards in the sample extracts ranged

from 61-87%. All of the labeled internal standard recoveries obtained for this project were within the

target ranges for the method. Also, since the internal standards were added to the samples prior to the

extraction step, the data were automatically corrected for recovery and accurate values were obtained.

The recoveries of the PCDD/PCDF surrogate compounds in the field samples ranged from 85-122%. All

of the surrogate recovery values obtained for this project were within the 70-130% target range specified

in Method 23. These results indicate that no significant breakthrough occurred during sample collection.

In some cases, interfering substances impacted the determinations of PCDD or PCDF congeners. The

affected values were flagged "I" where incorrect isotope ratios were obtained.

A laboratory method blank was prepared and analyzed with the sample batch as part of our routine quality

control procedures. The results show the blank to contain trace levels of selected congeners. These

were below the calibration range of the method. Sample levels similar to the corresponding blank levels

were flagged "B" on the results tables and may be, at least partially, attributed to the background. It

should be noted that levels less than ten times the background are not generally considered to be

statistically different from the background.

Laboratory quality control PCDD/PCDF spike samples were also prepared with the sample batch using

clean XAD that had been fortified with native standards. The results show that the spiked native

compounds were recovered at 86-108%, with relative percent differences of 0.0-5.2%. These results

indicate high degrees of accuracy and precision for these determinations. Matrix spikes were not

prepared with the sample batch.

DISCUSSION

Report No.....10136336_M23 Revision 1 Page 2 of 17
REPORT OF LABORATORY ANALYSIS

This report shall not be reproduced, except in full,

without the written consent of Pace Analytical Services, Inc.

Pace Analytical Services, Inc.

1700 Elm Street - Suite 200

Minneapolis, MN 55414

Tel: 612-607-1700

Fax: 612- 607-6444

Report No.....10136336

Minnesota Laboratory Certifications

Authority Certificate # Authority Certificate #

Alabama 40770 Montana 92

Alaska MN00064 Nebraska

Arizona AZ0014 Nevada MN000642010A

Arkansas 88-0680 New Jersey (NE MN002

California 01155CA New Mexico MN00064

Colorado MN00064 New York (NEL 11647

Connecticut PH-0256 North Carolina 27700

EPA Region 5 WD-15J North Dakota R-036

EPA Region 8 8TMS-Q Ohio 4150

Florida (NELAP E87605 Ohio VAP CL101

Georgia (DNR) 959 Oklahoma D9922

Guam 09-019r Oregon (ELAP) MN200001-005

Hawaii SLD Oregon (OREL MN200001-005

Idaho MN00064 Pennsylvania 68-00563

Illinois 200012 Saipan MP0003

Indiana C-MN-01 South Carolina 74003001

Indiana C-MN-01 Tennesee 2818

Iowa 368 Tennessee 02818

Kansas E-10167 Texas T104704192-08

Kentucky 90062 Utah (NELAP) PAM

Louisiana LA0900016 Virginia 00251

Maine 2007029 Washington C755

Maryland 322 West Virginia 9952C

Michigan 9909 Wisconsin 999407970

Minnesota 027-053-137 Wyoming 8TMS-Q

Mississippi MN00064

Report No.....10136336_M23 Revision 1 Page 3 of 17
Appendix A

Sample Management

Pace Analytical Services, Inc. Report No.....10136336_M23 Revision 1 Page 4 of 17
Armstrong Environmental, Inc.

1748 Hlavek Rd

Decatur, TX 76234

\ \2- l/) 1\50 PHONE NO.

g - fIOtil

iol3632~

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CHAr N OF CUSTODY RECORD

---------.----_._---

.;....

~V's~ ßr1cJ~) M;t1e.~l we1k/T~ ~ ~Pl

-0 t' Tng l'i\J1I1\)urS ~ W ~ '- C ,!!I -..-..-,-------, -"'--"'--.., '--''''-'-, .-.---'-------- :.~ ïii ~ SJ",pl, _ 0", n"" 0,,,, ;110' 01 s"" "" . ~ .jj' ~ I'lurnbor SOf1pliid Sil/1ipl()d r r z ü qr r r r' _'_...__.__.................__....

2s.'.~-"'-" 'I, ~.'. .- '-'--'--,- ,M() ;- T r.;---C~~ t-i :,~~~:i-'-- 'i .-....r-(~ = _= ... 7~~Ød ~..--..,-'--~"t..--..-'-~~,. . . ..----- ,.,;., .~~ ~~~(..._.,_.,.._,I, " jt2lj6 ;$ 0 ~((1l f.__cl I A~f.", fb -.e .. i/",s.,P""" 'I ,___ _ _ .-r,...._-'-, -----..... _....~--. ----....-. --- -----0-__,_. -'i'-'r-ii. i i

.' J' -. ( '. (Li ì( lUè!i'c: ' , 3i ~ ii.. 1 Ð ''''-~.e tif"" H'V.o~)( _ _,_ --......,--_._--,-,,-. ,-~'5-..-,-_, '---'--'--, '-_, ,.....,____ _.____.___.___ "-1--'1'-' , .31. "$lrø;'; c;CG F;kr (1 I fe, ~1 t~~ ~ _____ ~1~C--- .a -', ~- -lij140- ~ --" '1- -- - æl~ 'l! - i' l), i- 1 fbp -- .-- irri~ __ _ _ __ _ _ ___~____

~.l..s c . 'L l .. v "- I .1-i4: "".,,~_.._ 35' \ ~¡'JS 'TL; Iii : . .--..'1--'--'-1------.._---'--- , -- '--~-

------¡--..--.-- '--'--------~--. :--'--'-lE'-t=:T,-r- -1-1--1---1--'--.- % ~/ig ___ _ G:lo,~ r¡L"' r-iiw . ¡."'~""~ r'._ _________

- '~-. .. - - - -_. ------,-- -----..,-.. -'-"-'--_.. .---.....71-....'-.._--..--. --.. '--- --"- ,--, -- ~ 1 81 I., /Ae-eJ (A-c¿'f.~__ . ... f-" ~~:1' 'i ~----ll

.._--....--'- '-..-_...... ".-.._----,. . -- ---- '-- ._-~--- -. -, -- -_. "'- "-- al .)'S ati'l ~ L'_M .. . t!!l '¡(.- ,e'''j( .. \Y i i fk~ ,_._ "_'''_ _,__. _.______.._..,..,___..._,.,_"_,....,

------::~=-~~~=-__l~_ ~~ _R~~t :::::~ ~I ~~æ D", T,,," n"",,, d by, ISlo"""'''1 ~ I .' i ii~;,,',b;¡-by~ís~~,~I--- i~~~i. T'","~~;'"'",iI"' I;i~~,lo~~¡~+:~ --():~-I~::-- """~ee --R:-r is -h;--;j;/¡:---I

HoniiJrl\s

, i . - v - ~e.

Dhi"

Disliibulion: Oii~)in¡il Accoripanios Sliiprioiil'

Copy 10 CliOf1!1Piojccl Co\;,din¡ilor

1-=//_

Report No.....10136336_M23 Revision 1 Page 5 of 17
Armstrong Environmental, Inc.

1748 Hlavek Rd

Decatur, TX 76234 - - VI a c. \. ~

.~ ïii

E.ë'

:: Q :z 0

Tng Nu,iibo,;

PHONE NO.. (214)\6~Jl~002-i

¿ ~ fvtCill AryVs't-§2;'x, t1¿:h:O,tt'i.. COrn

'-____~_ i 01 :J 67;1 k -'_.__'''~'-'._-~--_-:'___.h:____. L t-l ~ l~'~~-U~-'~-~i-Ã~i-~~'~;;---'--~----- CHAIN OF CUSTODY RECORD ------~._------_._- -;,,

(fCVl-50.. ßdck, Mi",L(~1 Wa.llfi )'l

SAl1plu Dolo Tirno l) '.1. f S I I' oscrip ion 0 ,amp os ~~~~:.~~:_, ~:.:!:llP!?~f S(\ri~i:.~~ --___.._______

., --, .-;~- --..------..,-.-- ---(....-.1,.._-,,,- -1'L -~~ ------- - MD-i- \f':_ . . ( ¡¡''lt.~s:~ _ _ f__ __ -------

--~- ~~.-...-_-_ ýr..S-S t'!. ~ 0 ¡fer _~ ___-"~~ ~.. _ _ _ __ _~_____ .' ~ " ~ !tl,er i; -ji_ !l~_ ---- -~~~ !M,,ct__ __!__ !~r_ _ '¡ :..._ __ __ ----ltl -,'f2-:I:~ --- ~~. ~~ . - -l --J~~- ~ __ __ _ _ _ ___+__

-~L Ja -- -- "'p ---------------_ ___. _ _ ---(-

~'t f Li, , t-¡ (fer (La-~ iFf'her . F1C-fr8/ei-v/cY' '-"''''''- --. -_., ---"- ._---'-_.._---'------,--- '-"--_. ._-------- --- -- '-, -'---- '- ..-._-----_..........,---.._-----_. --------- Honiniks

--:----.I-.---- ~-~---~--

~

.---------_._ i _'_,.__

..--.---..--.-..-----, -,1,-1'__. __,_ ..___.__ .____.___..___.._.____.._....._ ---------------- -'-"-:--'.I'--_.--~-._.._-"-~-'---i/--.I__hl:__~' __.__. ___.

-- ,.__. ._-----..-._--._----~----"-"-~.

'---1'--_._--.. _.._,. __ ,__, ,..._,..__. ______.._..,__,_______,_

"JI.~liY:i~o~~---I-~: T;m':~~r"'.';í~;.~~¡:i. --o':;-i::-- """"'~~;--¡~~h -~~-~;~O-----'

i .... ..,... -......,..,_.---..,c-....-,.._'-'..,~L..l;;1

Disliibuliori: Oiiuin¡ill\ccoriipaiiios Ship!1olit.

COPY'IO CliOllllProjeGl Coordinator

Report No.....10136336_M23 Revision 1 Page 6 of 17
ßAnO Client Name: A rmstr o~ r n v: f\.. ..I Project #

c:"" Lex 0 lJS 0 USPS 0 Cllont 0 Comm_ 0 Pa Oter

Tracking## ~,)blloI9) D'Sir:/3buJr32-ì;C¿f( /

Custod Sel on ColerlBox Prent: GÍ yes 0 no Seals Intact: i! yes

Packing Material: 0 Bubble Wrap ~bble Bas 0 Nons 0 Oter

Thermometer Use 802 or ~ Type of loe~ Blue Noe

Coer Temperature \ ,k BlologlOlI Tlnue I. Frozen: Ves No

Temp should be above freezing to 6°C Comment.:

Sample Condition Upon Receipt

j¿)1l7t(.S7h

o no

Temp Blank: Yes -L No

o Sam les on Ice, colin ocess has begun

Date and Inillal, 01 ~.fn examflng

contente: 9.B:¥L ¡USb~

oc

Corret Contaners Used:

.Pace Containers Used:

Contaners Intact:

Filered volume received for Disslved tests

, Sample Lals match COC:

.Includes dateltlmellD/Anal sls Matrix:

All contaners needing ac di preervation have been

checked. Noncomollanc are noted In 13.

All contalnera neing prervation are found to be In Dves DNo

compliance wih EPA remmendaon.

Excepllon: VOA,Colfor, TOC. 011 and Greas, WI-OAO (wele( Dves SC

Dves DNo

DVee DNo

Dves DNo

Dves DNo

o HN03 0 H2SO4 0 NaOH o Hei

Lot # of added

preservtie

Client Notificaion! ReslutIon:

Persn Contacted:

Comments! Resolution:

Field Data Required? Y I N

DatelTme:

Proec Manager Review: ß Date: l)gtp 3 / tV

Note: Whenever there is a disrepancy affting Nort Carolina compliance samples, a copy of this form will be sent to thJNl- SI, Inc. F-L213Rev.OO.05Aug200 1700 Elm Strt SE, Suite 200, Minneapolis, MN 55414

Report No.....10136336_M23 Revision 1 Page 7 of 17
REPORT OF LABORATORY ANALYSIS

This report shall not be reproduced, except in full,

without the written consent of Pace Analytical Services, Inc.

Pace Analytical Services, Inc.

1700 Elm Street - Suite 200

Minneapolis, MN 55414

Tel: 612-607-1700

Fax: 612- 607-6444

Report No.....10136336

Reporting Flags

A =

B =

C =

D =

E =

I =

J =

Nn =

P =

R =

S =

U =

V =

X =

Y =

* =

Reporting Limit based on signal to noise

Less than 10x higher than method blank level

Result obtained from confirmation analysis

Result obtained from analysis of diluted sample

Exceeds calibration range

Interference present

Estimated value

Value obtained from additional analysis

PCDE Interference

Recovery outside target range

Peak saturated

Analyte not detected

Result verified by confirmation analysis

%D Exceeds limits

Calculated using average of daily RFs

See Discussion

Report No.....10136336_M23 Revision 1 Page 8 of 17
Appendix B

Sample Analysis Summary

Pace Analytical Services, Inc. Report No.....10136336_M23 Revision 1 Page 9 of 17
REPORT OF LABORATORY ANALYSIS

This report shall not be reproduced, except in full,

without the written consent of Pace Analytical Services, Inc.

Pace Analytical Services, Inc.

1700 Elm Street - Suite 200

Minneapolis, MN 55414

Tel: 612-607-1700

Fax: 612- 607-6444

Lab Sample ID

Injected By

Filename

Amount Extracted

ICAL ID

CCal Filename(s)

Method Blank ID

Client's Sample ID Hansen R7

10136336001

U100902A_09

SMT

1.00 Sample

U100607

U100902A_02

BLANK-26210

Matrix

Dilution

Collected

Received

Extracted

Analyzed

XAD

NA

08/18/2010

08/23/2010 09:30

08/26/2010 19:30

09/02/2010 17:42

Client - Armstrong Environmental, Inc.

Method 23 Sample Analysis Results

Native

Isomers

Conc

ng/S ng/S

LRL Internal

Standards Added

ng's Percent

Recovery

EMPC

ng/S

2,3,7,8-TCDF ND ----- 0.0041 2,3,7,8-TCDF-13C 2.00 71

Total TCDF 0.0470 ----- 0.0041 2,3,7,8-TCDD-13C 2.00 80

1,2,3,7,8-PeCDF-13C 2.00 77

2,3,7,8-TCDD 0.0054 ----- 0.0033 J 1,2,3,7,8-PeCDD-13C 2.00 84

Total TCDD 0.0460 ----- 0.0033 J 1,2,3,6,7,8-HxCDF-13C 2.00 65

1,2,3,6,7,8-HxCDD-13C 2.00 81

1,2,3,7,8-PeCDF ND ----- 0.0046 1,2,3,4,6,7,8-HpCDF-13C 2.00 87

2,3,4,7,8-PeCDF ND ----- 0.0039 1,2,3,4,6,7,8-HpCDD-13C 2.00 78

Total PeCDF ND ----- 0.0042 OCDD-13C 4.00 72

1,2,3,7,8-PeCDD ND ----- 0.0073 Recovery

Total PeCDD 0.1100 ----- 0.0073 Standards

1,2,3,4-TCDD-13C 2.00 NA

1,2,3,4,7,8-HxCDF ND ----- 0.0055 1,2,3,7,8,9-HxCDD-13C 2.00 NA

1,2,3,6,7,8-HxCDF ND ----- 0.0043

2,3,4,6,7,8-HxCDF 0.0065 ----- 0.0053 J Surrogates

1,2,3,7,8,9-HxCDF ND ----- 0.0054 2,3,7,8-TCDD-37Cl4 2.00 100

Total HxCDF 0.0065 ----- 0.0051 J 2,3,4,7,8-PeCDF-13C 2.00 95

1,2,3,4,7,8-HxCDF-13C 2.00 100

1,2,3,4,7,8-HxCDD ND ----- 0.0060 1,2,3,4,7,8-HxCDD-13C 2.00 114

1,2,3,6,7,8-HxCDD ----- 0.0071 0.0053 I 1,2,3,4,7,8,9-HpCDF-13C 2.00 91

1,2,3,7,8,9-HxCDD ND ----- 0.0045

Total HxCDD ND ----- 0.0053

1,2,3,4,6,7,8-HpCDF ND ----- 0.0037 Total 2,3,7,8-TCDD

1,2,3,4,7,8,9-HpCDF ND ----- 0.0073 Equivalence: 0.0063 ng/S

Total HpCDF ND ----- 0.0055 (Using ITE Factors)

1,2,3,4,6,7,8-HpCDD 0.0160 ----- 0.0038 BJ

Total HpCDD 0.0390 ----- 0.0038 BJ

OCDF ND ----- 0.0046

OCDD 0.0880 ----- 0.0051 BJ

Conc = Concentration (Totals include 2,3,7,8-substituted isomers).

EMPC = Estimated Maximum Possible Concentration

LRL = Lower Reporting Limit

J = Estimated value

B = Less than 10 times higher than method blank level

R = Recovery outside of target range

Nn = Value obtained from additional analysis

A = Detection Limit based on signal to noise

I = Interference

P = PCDE Interference

S = Saturated signal

ND = Not Detected

NA = Not Applicable

NC = Not Calculated

Report No.....10136336_M23 Revision 1 Page 10 of 17
REPORT OF LABORATORY ANALYSIS

This report shall not be reproduced, except in full,

without the written consent of Pace Analytical Services, Inc.

Pace Analytical Services, Inc.

1700 Elm Street - Suite 200

Minneapolis, MN 55414

Tel: 612-607-1700

Fax: 612- 607-6444

Lab Sample ID

Injected By

Filename

Amount Extracted

ICAL ID

CCal Filename(s)

Method Blank ID

Client's Sample ID Hansen R8

10136336002

U100902A_10

SMT

1.00 Sample

U100607

U100902A_02

BLANK-26210

Matrix

Dilution

Collected

Received

Extracted

Analyzed

XAD

NA

08/18/2010

08/23/2010 09:30

08/26/2010 19:30

09/02/2010 18:29

Client - Armstrong Environmental, Inc.

Method 23 Sample Analysis Results

Native

Isomers

Conc

ng/S ng/S

LRL Internal

Standards Added

ng's Percent

Recovery

EMPC

ng/S

2,3,7,8-TCDF ND ----- 0.0034 2,3,7,8-TCDF-13C 2.00 75

Total TCDF 0.0940 ----- 0.0034 2,3,7,8-TCDD-13C 2.00 80

1,2,3,7,8-PeCDF-13C 2.00 82

2,3,7,8-TCDD ----- 0.0058 0.0044 I 1,2,3,7,8-PeCDD-13C 2.00 86

Total TCDD 0.0420 ----- 0.0044 1,2,3,6,7,8-HxCDF-13C 2.00 69

1,2,3,6,7,8-HxCDD-13C 2.00 78

1,2,3,7,8-PeCDF ND ----- 0.0051 1,2,3,4,6,7,8-HpCDF-13C 2.00 85

2,3,4,7,8-PeCDF ND ----- 0.0054 1,2,3,4,6,7,8-HpCDD-13C 2.00 72

Total PeCDF 0.0220 ----- 0.0052 J OCDD-13C 4.00 68

1,2,3,7,8-PeCDD ND ----- 0.0097 Recovery

Total PeCDD 0.1900 ----- 0.0097 Standards

1,2,3,4-TCDD-13C 2.00 NA

1,2,3,4,7,8-HxCDF 0.0062 ----- 0.0051 J 1,2,3,7,8,9-HxCDD-13C 2.00 NA

1,2,3,6,7,8-HxCDF ----- 0.0110 0.0042 P

2,3,4,6,7,8-HxCDF ND ----- 0.0046 Surrogates

1,2,3,7,8,9-HxCDF ND ----- 0.0045 2,3,7,8-TCDD-37Cl4 2.00 96

Total HxCDF 0.0200 ----- 0.0046 J 2,3,4,7,8-PeCDF-13C 2.00 93

1,2,3,4,7,8-HxCDF-13C 2.00 96

1,2,3,4,7,8-HxCDD ----- 0.0080 0.0079 I 1,2,3,4,7,8-HxCDD-13C 2.00 117

1,2,3,6,7,8-HxCDD ND ----- 0.0074 1,2,3,4,7,8,9-HpCDF-13C 2.00 85

1,2,3,7,8,9-HxCDD ----- 0.0073 0.0072 I

Total HxCDD ND ----- 0.0075

1,2,3,4,6,7,8-HpCDF ----- 0.0110 0.0095 I Total 2,3,7,8-TCDD

1,2,3,4,7,8,9-HpCDF ND ----- 0.0130 Equivalence: 0.0015 ng/S

Total HpCDF ND ----- 0.0110 (Using ITE Factors)

1,2,3,4,6,7,8-HpCDD 0.0510 ----- 0.0045 B

Total HpCDD 0.1500 ----- 0.0045

OCDF 0.0110 ----- 0.0052 J

OCDD 0.3100 ----- 0.0110 B

Conc = Concentration (Totals include 2,3,7,8-substituted isomers).

EMPC = Estimated Maximum Possible Concentration

LRL = Lower Reporting Limit

J = Estimated value

B = Less than 10 times higher than method blank level

R = Recovery outside of target range

Nn = Value obtained from additional analysis

A = Detection Limit based on signal to noise

I = Interference

P = PCDE Interference

S = Saturated signal

ND = Not Detected

NA = Not Applicable

NC = Not Calculated

Report No.....10136336_M23 Revision 1 Page 11 of 17
REPORT OF LABORATORY ANALYSIS

This report shall not be reproduced, except in full,

without the written consent of Pace Analytical Services, Inc.

Pace Analytical Services, Inc.

1700 Elm Street - Suite 200

Minneapolis, MN 55414

Tel: 612-607-1700

Fax: 612- 607-6444

Lab Sample ID

Injected By

Filename

Amount Extracted

ICAL ID

CCal Filename(s)

Method Blank ID

Client's Sample ID Hansen R9

10136336003

U100902A_11

SMT

1.00 Sample

U100607

U100902A_02

BLANK-26210

Matrix

Dilution

Collected

Received

Extracted

Analyzed

XAD

NA

08/19/2010

08/23/2010 09:30

08/26/2010 19:30

09/02/2010 19:16

Client - Armstrong Environmental, Inc.

Method 23 Sample Analysis Results

Native

Isomers

Conc

ng/S ng/S

LRL Internal

Standards Added

ng's Percent

Recovery

EMPC

ng/S

2,3,7,8-TCDF ND ----- 0.0060 2,3,7,8-TCDF-13C 2.00 61

Total TCDF 0.088 ----- 0.0060 2,3,7,8-TCDD-13C 2.00 74

1,2,3,7,8-PeCDF-13C 2.00 79

2,3,7,8-TCDD ----- 0.0061 0.0037 I 1,2,3,7,8-PeCDD-13C 2.00 86

Total TCDD 0.013 ----- 0.0037 J 1,2,3,6,7,8-HxCDF-13C 2.00 67

1,2,3,6,7,8-HxCDD-13C 2.00 79

1,2,3,7,8-PeCDF ND ----- 0.0055 1,2,3,4,6,7,8-HpCDF-13C 2.00 83

2,3,4,7,8-PeCDF ND ----- 0.0054 1,2,3,4,6,7,8-HpCDD-13C 2.00 76

Total PeCDF ND ----- 0.0055 OCDD-13C 4.00 64

1,2,3,7,8-PeCDD ND ----- 0.0065 Recovery

Total PeCDD 0.088 ----- 0.0065 J Standards

1,2,3,4-TCDD-13C 2.00 NA

1,2,3,4,7,8-HxCDF ND ----- 0.0075 1,2,3,7,8,9-HxCDD-13C 2.00 NA

1,2,3,6,7,8-HxCDF ----- 0.0068 0.0058 I

2,3,4,6,7,8-HxCDF ----- 0.0069 0.0050 I Surrogates

1,2,3,7,8,9-HxCDF ND ----- 0.0064 2,3,7,8-TCDD-37Cl4 2.00 101

Total HxCDF ND ----- 0.0061 2,3,4,7,8-PeCDF-13C 2.00 102

1,2,3,4,7,8-HxCDF-13C 2.00 104

1,2,3,4,7,8-HxCDD ND ----- 0.0092 1,2,3,4,7,8-HxCDD-13C 2.00 122

1,2,3,6,7,8-HxCDD ND ----- 0.0082 1,2,3,4,7,8,9-HpCDF-13C 2.00 96

1,2,3,7,8,9-HxCDD ND ----- 0.0075

Total HxCDD ND ----- 0.0083

1,2,3,4,6,7,8-HpCDF ND ----- 0.0074 Total 2,3,7,8-TCDD

1,2,3,4,7,8,9-HpCDF ND ----- 0.0095 Equivalence: 0.00037 ng/S

Total HpCDF ND ----- 0.0084 (Using ITE Factors)

1,2,3,4,6,7,8-HpCDD 0.021 ----- 0.0074 BJ

Total HpCDD 0.052 ----- 0.0074 BJ

OCDF ND ----- 0.0065

OCDD 0.150 ----- 0.0070 B

Conc = Concentration (Totals include 2,3,7,8-substituted isomers).

EMPC = Estimated Maximum Possible Concentration

LRL = Lower Reporting Limit

J = Estimated value

B = Less than 10 times higher than method blank level

R = Recovery outside of target range

Nn = Value obtained from additional analysis

A = Detection Limit based on signal to noise

I = Interference

P = PCDE Interference

S = Saturated signal

ND = Not Detected

NA = Not Applicable

NC = Not Calculated

Report No.....10136336_M23 Revision 1 Page 12 of 17
REPORT OF LABORATORY ANALYSIS

This report shall not be reproduced, except in full,

without the written consent of Pace Analytical Services, Inc.

Pace Analytical Services, Inc.

1700 Elm Street - Suite 200

Minneapolis, MN 55414

Tel: 612-607-1700

Fax: 612- 607-6444

Lab Sample ID

Injected By

Filename

Amount Extracted

ICAL ID

CCal Filename(s)

Method Blank ID

Client's Sample ID Field Blank

10136336004

U100902A_07

SMT

1.00 Sample

U100607

U100902A_02

BLANK-26210

Matrix

Dilution

Collected

Received

Extracted

Analyzed

XAD

NA

08/19/2010

08/23/2010 09:30

08/26/2010 19:30

09/02/2010 16:08

Client - Armstrong Environmental, Inc.

Method 23 Sample Analysis Results

Native

Isomers

Conc

ng/S ng/S

LRL Internal

Standards Added

ng's Percent

Recovery

EMPC

ng/S

2,3,7,8-TCDF ND ----- 0.0029 2,3,7,8-TCDF-13C 2.00 71

Total TCDF ND ----- 0.0029 2,3,7,8-TCDD-13C 2.00 82

1,2,3,7,8-PeCDF-13C 2.00 75

2,3,7,8-TCDD ND ----- 0.0025 1,2,3,7,8-PeCDD-13C 2.00 82

Total TCDD ND ----- 0.0025 1,2,3,6,7,8-HxCDF-13C 2.00 66

1,2,3,6,7,8-HxCDD-13C 2.00 84

1,2,3,7,8-PeCDF ND ----- 0.0045 1,2,3,4,6,7,8-HpCDF-13C 2.00 86

2,3,4,7,8-PeCDF ND ----- 0.0041 1,2,3,4,6,7,8-HpCDD-13C 2.00 78

Total PeCDF ND ----- 0.0043 OCDD-13C 4.00 69

1,2,3,7,8-PeCDD ND ----- 0.0049 Recovery

Total PeCDD ND ----- 0.0049 Standards

1,2,3,4-TCDD-13C 2.00 NA

1,2,3,4,7,8-HxCDF ND ----- 0.0035 1,2,3,7,8,9-HxCDD-13C 2.00 NA

1,2,3,6,7,8-HxCDF ND ----- 0.0034

2,3,4,6,7,8-HxCDF ND ----- 0.0039 Surrogates

1,2,3,7,8,9-HxCDF ND ----- 0.0046 2,3,7,8-TCDD-37Cl4 2.00 103

Total HxCDF ND ----- 0.0038 2,3,4,7,8-PeCDF-13C 2.00 96

1,2,3,4,7,8-HxCDF-13C 2.00 99

1,2,3,4,7,8-HxCDD ND ----- 0.0039 1,2,3,4,7,8-HxCDD-13C 2.00 112

1,2,3,6,7,8-HxCDD ND ----- 0.0036 1,2,3,4,7,8,9-HpCDF-13C 2.00 91

1,2,3,7,8,9-HxCDD ND ----- 0.0031

Total HxCDD ND ----- 0.0035

1,2,3,4,6,7,8-HpCDF ND ----- 0.0042 Total 2,3,7,8-TCDD

1,2,3,4,7,8,9-HpCDF ND ----- 0.0044 Equivalence: 0.000065 ng/S

Total HpCDF ND ----- 0.0043 (Using ITE Factors)

1,2,3,4,6,7,8-HpCDD 0.0047 ----- 0.0036 BJ

Total HpCDD 0.0047 ----- 0.0036 BJ

OCDF ----- 0.0038 0.0034 I

OCDD 0.0190 ----- 0.0039 BJ

Conc = Concentration (Totals include 2,3,7,8-substituted isomers).

EMPC = Estimated Maximum Possible Concentration

LRL = Lower Reporting Limit

J = Estimated value

B = Less than 10 times higher than method blank level

R = Recovery outside of target range

Nn = Value obtained from additional analysis

A = Detection Limit based on signal to noise

I = Interference

P = PCDE Interference

S = Saturated signal

ND = Not Detected

NA = Not Applicable

NC = Not Calculated

Report No.....10136336_M23 Revision 1 Page 13 of 17
REPORT OF LABORATORY ANALYSIS

This report shall not be reproduced, except in full,

without the written consent of Pace Analytical Services, Inc.

Pace Analytical Services, Inc.

1700 Elm Street - Suite 200

Minneapolis, MN 55414

Tel: 612-607-1700

Fax: 612- 607-6444

Lab Sample ID

Injected By

Filename

Amount Extracted

ICAL ID

CCal Filename(s)

BLANK-26210

U100902A_08

SMT

1.00 Sample

U100607

U100902A_02

Matrix

Dilution

Extracted

Analyzed

XAD

08/26/2010 19:30

09/02/2010 16:55

NA

Method 23 Blank Analysis Results

Native Internal ng's Percent

Isomers Standards Added Recovery

Conc EMPC LRL

ng/S ng/S ng/S

2,3,7,8-TCDF ND ----- 0.0018 2,3,7,8-TCDF-13C 2.00 78

Total TCDF ND ----- 0.0018 2,3,7,8-TCDD-13C 2.00 87

1,2,3,7,8-PeCDF-13C 2.00 82

2,3,7,8-TCDD ND ----- 0.0024 1,2,3,7,8-PeCDD-13C 2.00 93

Total TCDD ND ----- 0.0024 1,2,3,6,7,8-HxCDF-13C 2.00 75

1,2,3,6,7,8-HxCDD-13C 2.00 96

1,2,3,7,8-PeCDF ND ----- 0.0053 1,2,3,4,6,7,8-HpCDF-13C 2.00 103

2,3,4,7,8-PeCDF ND ----- 0.0053 1,2,3,4,6,7,8-HpCDD-13C 2.00 93

Total PeCDF ND ----- 0.0053 OCDD-13C 4.00 86

1,2,3,7,8-PeCDD ND ----- 0.0074 Recovery

Total PeCDD ND ----- 0.0074 Standards

1,2,3,4-TCDD-13C 2.00 NA

1,2,3,4,7,8-HxCDF ND ----- 0.0036 1,2,3,7,8,9-HxCDD-13C 2.00 NA

1,2,3,6,7,8-HxCDF ND ----- 0.0029

2,3,4,6,7,8-HxCDF ND ----- 0.0040 Surrogates

1,2,3,7,8,9-HxCDF ND ----- 0.0046 2,3,7,8-TCDD-37Cl4 2.00 106

Total HxCDF ND ----- 0.0038 2,3,4,7,8-PeCDF-13C 2.00 100

1,2,3,4,7,8-HxCDF-13C 2.00 101

1,2,3,4,7,8-HxCDD ND ----- 0.0037 1,2,3,4,7,8-HxCDD-13C 2.00 118

1,2,3,6,7,8-HxCDD ND ----- 0.0029 1,2,3,4,7,8,9-HpCDF-13C 2.00 94

1,2,3,7,8,9-HxCDD ND ----- 0.0026

Total HxCDD ND ----- 0.0031

1,2,3,4,6,7,8-HpCDF ND ----- 0.0020 Total 2,3,7,8-TCDD

1,2,3,4,7,8,9-HpCDF ND ----- 0.0024 Equivalence: 0.00015 ng/S

Total HpCDF ND ----- 0.0022 (Using ITE Factors)

1,2,3,4,6,7,8-HpCDD 0.0077 ----- 0.0032 J

Total HpCDD 0.0130 ----- 0.0032 J

OCDF ----- 0.0055 0.0030 I

OCDD 0.0750 ----- 0.0034 J

Conc = Concentration (Totals include 2,3,7,8-substituted isomers).

EMPC = Estimated Maximum Possible Concentration

LRL = Lower Reporting Limit

J = Estimated value

Nn = Value obtained from additional analysis

A = Detection Limit based on signal to noise

R = Recovery outside of target range

I = Interference

P = PCDE Interference

ND = Not Detected

NA = Not Applicable

NC = Not Calculated

Report No.....10136336_M23 Revision 1 Page 14 of 17
REPORT OF LABORATORY ANALYSIS

This report shall not be reproduced, except in full,

without the written consent of Pace Analytical Services, Inc.

Pace Analytical Services, Inc.

1700 Elm Street - Suite 200

Minneapolis, MN 55414

Tel: 612-607-1700

Fax: 612- 607-6444

Lab Sample ID

Injected By

Filename

Total Amount Extracted

ICAL ID

CCal Filename(s)

LCS-26211

U100902A_04

SMT

1.00 Sample

U100607

U100902A_02

Matrix

Dilution

Extracted

Analyzed

XAD

08/26/2010 19:30

09/02/2010 13:48

NA

Method Blank ID BLANK-26210

Method 23 Laboratory Control Spike Results

Native Qs Qm Internal ng's Percent

Isomers Standards Added Recovery

%

Rec. (ng) (ng)

2,3,7,8-TCDF 0.20 0.19 97 2,3,7,8-TCDF-13C 2.0 71

Total TCDF 2,3,7,8-TCDD-13C 2.0 78

1,2,3,7,8-PeCDF-13C 2.0 76

2,3,7,8-TCDD 0.20 0.19 95 1,2,3,7,8-PeCDD-13C 2.0 85

Total TCDD 1,2,3,6,7,8-HxCDF-13C 2.0 69

1,2,3,6,7,8-HxCDD-13C 2.0 90

1,2,3,7,8-PeCDF 1.0 0.93 93 1,2,3,4,6,7,8-HpCDF-13C 2.0 91

2,3,4,7,8-PeCDF 1.0 0.90 90 1,2,3,4,6,7,8-HpCDD-13C 2.0 82

Total PeCDF OCDD-13C 4.0 78

1,2,3,7,8-PeCDD 1.0 0.95 95 Recovery

Total PeCDD Standards

1,2,3,4-TCDD-13C 2.0 NA

1,2,3,4,7,8-HxCDF 1.0 1.1 107 1,2,3,7,8,9-HxCDD-13C 2.0 NA

1,2,3,6,7,8-HxCDF 1.0 0.96 96

2,3,4,6,7,8-HxCDF 1.0 1.1 107 Surrogates

1,2,3,7,8,9-HxCDF 1.0 1.0 101 2,3,7,8-TCDD-37Cl4 2.0 109

Total HxCDF 2,3,4,7,8-PeCDF-13C 2.0 101

1,2,3,4,7,8-HxCDF-13C 2.0 105

1,2,3,4,7,8-HxCDD 1.0 1.0 100 1,2,3,4,7,8-HxCDD-13C 2.0 112

1,2,3,6,7,8-HxCDD 1.0 0.92 92 1,2,3,4,7,8,9-HpCDF-13C 2.0 94

1,2,3,7,8,9-HxCDD 1.0 0.86 86

Total HxCDD

1,2,3,4,6,7,8-HpCDF 1.0 1.0 102

1,2,3,4,7,8,9-HpCDF 1.0 0.97 97

Total HpCDF

1,2,3,4,6,7,8-HpCDD 1.0 0.99 99

Total HpCDD

OCDF 2.0 1.9 96

OCDD 2.0 2.2 108

Qs = Quantity Spiked

Qm = Quantity Measured

Rec. = Recovery (Expressed as Percent)

R = Outside the method specified target recovery range

NA = Not Applicable

Nn = Value obtained from additional analysis

Report No.....10136336_M23 Revision 1 Page 15 of 17
REPORT OF LABORATORY ANALYSIS

This report shall not be reproduced, except in full,

without the written consent of Pace Analytical Services, Inc.

Pace Analytical Services, Inc.

1700 Elm Street - Suite 200

Minneapolis, MN 55414

Tel: 612-607-1700

Fax: 612- 607-6444

Lab Sample ID

Injected By

Filename

Total Amount Extracted

ICAL ID

CCal Filename(s)

LCSD-26212

U100903A_03

CVS

1.00 Sample

U100607

U100903A_02

Matrix

Dilution

Extracted

Analyzed

XAD

08/26/2010 19:30

09/03/2010 14:23

NA

Method Blank ID BLANK-26210

Method 23 Laboratory Control Spike Results

Native Qs Qm Internal ng's Percent

Isomers Standards Added Recovery

%

Rec. (ng) (ng)

2,3,7,8-TCDF 0.20 0.19 94 2,3,7,8-TCDF-13C 2.0 68

Total TCDF 2,3,7,8-TCDD-13C 2.0 79

1,2,3,7,8-PeCDF-13C 2.0 70

2,3,7,8-TCDD 0.20 0.19 93 1,2,3,7,8-PeCDD-13C 2.0 80

Total TCDD 1,2,3,6,7,8-HxCDF-13C 2.0 66

1,2,3,6,7,8-HxCDD-13C 2.0 87

1,2,3,7,8-PeCDF 1.0 0.90 90 1,2,3,4,6,7,8-HpCDF-13C 2.0 94

2,3,4,7,8-PeCDF 1.0 0.87 87 1,2,3,4,6,7,8-HpCDD-13C 2.0 86

Total PeCDF OCDD-13C 4.0 76

1,2,3,7,8-PeCDD 1.0 0.92 92 Recovery

Total PeCDD Standards

1,2,3,4-TCDD-13C 2.0 NA

1,2,3,4,7,8-HxCDF 1.0 1.0 103 1,2,3,7,8,9-HxCDD-13C 2.0 NA

1,2,3,6,7,8-HxCDF 1.0 0.97 97

2,3,4,6,7,8-HxCDF 1.0 1.0 103 Surrogates

1,2,3,7,8,9-HxCDF 1.0 0.97 97 2,3,7,8-TCDD-37Cl4 2.0 105

Total HxCDF 2,3,4,7,8-PeCDF-13C 2.0 101

1,2,3,4,7,8-HxCDF-13C 2.0 103

1,2,3,4,7,8-HxCDD 1.0 0.98 98 1,2,3,4,7,8-HxCDD-13C 2.0 117

1,2,3,6,7,8-HxCDD 1.0 0.92 92 1,2,3,4,7,8,9-HpCDF-13C 2.0 94

1,2,3,7,8,9-HxCDD 1.0 0.86 86

Total HxCDD

1,2,3,4,6,7,8-HpCDF 1.0 0.99 99

1,2,3,4,7,8,9-HpCDF 1.0 0.93 93

Total HpCDF

1,2,3,4,6,7,8-HpCDD 1.0 0.94 94

Total HpCDD

OCDF 2.0 1.9 93

OCDD 2.0 2.1 104

Qs = Quantity Spiked

Qm = Quantity Measured

Rec. = Recovery (Expressed as Percent)

R = Outside the method specified target recovery range

NA = Not Applicable

Nn = Value obtained from additional analysis

Report No.....10136336_M23 Revision 1 Page 16 of 17
REPORT OF LABORATORY ANALYSIS

This report shall not be reproduced, except in full,

without the written consent of Pace Analytical Services, Inc.

Pace Analytical Services, Inc.

1700 Elm Street - Suite 200

Minneapolis, MN 55414

Tel: 612-607-1700

Fax: 612- 607-6444

Client

Spike 1 ID

Spike 1 Filename U100902A_04

LCS-26211

Armstrong Environmental, Inc.

Spike Recovery Relative Percent Difference (RPD) Results

Spike 2 ID

Spike 2 Filename U100903A_03

LCSD-26212

Method 23

Spike 1 Spike 2

Compound %REC %REC %RPD

2,3,7,8-TCDF 97 94 3.1

2,3,7,8-TCDD 95 93 2.1

1,2,3,7,8-PeCDF 93 90 3.3

2,3,4,7,8-PeCDF 90 87 3.4

1,2,3,7,8-PeCDD 95 92 3.2

1,2,3,4,7,8-HxCDF 107 103 3.8

1,2,3,6,7,8-HxCDF 96 97 1.0

2,3,4,6,7,8-HxCDF 107 103 3.8

1,2,3,7,8,9-HxCDF 101 97 4.0

1,2,3,4,7,8-HxCDD 100 98 2.0

1,2,3,6,7,8-HxCDD 92 92 0.0

1,2,3,7,8,9-HxCDD 86 86 0.0

1,2,3,4,6,7,8-HpCDF 102 99 3.0

1,2,3,4,7,8,9-HpCDF 97 93 4.2

1,2,3,4,6,7,8-HpCDD 99 94 5.2

OCDF 96 93 3.2

OCDD 108 104 3.8

%REC = Percent Recovered

RPD = The difference between the two values divided by the mean value

Report No.....10136336_M23 Revision 1 Page 17 of 17