### FW: Conference Call Follow Up , Trimatrix revisions

Terri Zick to: Christopher Lambesis
Cc: 'Kathy Wilson' 08/02/2010 01:09 PM

From:

To:

Cc:

History:



### ChrisTerri Zick <tzick@cticompanies.com >

Christopher Lambesis/R5/USEPA/US@EPA

'Kathy Wilson' <kathywilson@owossographic.com >
This message has been forwarded.



### Attached, please find the final version of the revisions and additional information as discussed in our
recent conference call. I will speak with you after you have had a chance to review the attached
information to confirm that it satisfies the remaining needs for compiling the delisting package.

Thank you



### Terri Zick

313-300-7401 cell tzick@cticompanies.com

CTI and Associates, Inc.
51331 W. Pontiac Trail, Wixom, MI 48393

248.486.5100 Phone / 248.486.5050 Fax

From: Gary Wood [mailto:woodgl@trimatrixlabs.com]


### Sent: Friday, July 30, 2010 3:57 PM



### To: Terri Zick 

### Subject: Conference Call Follow Up

Terri,

Please find attached a couple of files regarding this project. One contains the revised forms for the data package as requested (revised result forms, including the revised units for 1003151-01, plus the revised prep batch sheets). They are all paginated for easy insertion as replacement pages into the package. The other contains the additional library searches for the retention times Chris mentioned during the conference call. They are obviously not the sample peak/spectra as n-methylpyrrolidone, but it does appear that they are related — all of them have some sort of pyrrolidine as one or more of the matches, but none are exact matches (best Qual value was 59).

Also attached is the revised page to the SDG case narrative where I've added the discussion with Chris' edit and revised Statement of Data Qualifications page.

Gary Wood
Senior Project ChemistCorporate / Laboratory Main: 616.975.4500

5560 Corporate Exchange Court SE Direct: 616.940.4206 Grand Rapids, Michigan 49512 Fax: 616.942.7463 woodgl @ trim atrixlabs.com www.trimatrixlabs.com

The information contained in, or files attached to, this email is intended only for the use of the individual or entity to whom it is addressed, and others who have been specifically authorized to receive it. This email and its attachments may contain information that is privileged, confidential, and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient nor the employee or agent responsible for delivery to the intended recipient, you are hereby notified that any disclosure, copying, distribution, or use of the contents of this email and its attachments without the consent of TriMatrix Laboratories, Inc. is strictly prohibited and may be unlawful.

The information contained in this electronic message is privileged and/or confidential information intended only for the use of the individual or entity named above. If the reader of this message is not the intended recipient, or the employee or agent responsible to deliver it to the intended recipient, you are hereby notified that any dissemination, distribution or copying of the communication is neither allowed nor intended. If you have received this communication in error, please immediately notify us by return e-mail or by
calling 800-CTI-TODAY and delete the message. Thank You!

## METHOD BLANK DATA SHEET

USEPA-8270C

Laboratory: TriMatrix Laboratories, Inc. SDG: 1003151

Client: CTI and Associates, Inc. Project: Owosso Graphic Arts

Matrix: Waste Laboratory ID: 1002373-BLK1 File ID: 1002373-blkl.D

Prepared: 03/17/10 10:40 Preparation: 3550B Sonication Extract Initial/Final: 30 g / 10 mL

Analyzed: 03/17/10 14:50 Instrument: 308

QC Batch: 1002373 Sequence: 0C18017 Calibration: 0C 18005

CAS No. Tentatively Identified Compound RT Concentration Unit Q



### 872-50-4 n-methylpyrrolidone I Not found mg/kg N

Internal Standard Area RT 1 Ref. Area Ref. RT



### 1,4-Dichlorobenzene-d4 322253 7.901 223342 7.896

Naphthalene-d8 983790 10.64 668992 10.635

Acenaphthene-d10 629471 14.761 445098 14.762

Phenanthrene-d 10 1059263 18.142 793306 18.137

Chrysene-d12 1272751 21.697 805004 21.698

Perylene-d12 1044725 23.475 649569 23.464

### Laboratory: TriMatrix Laboratories. Inc.



### Client: CTI and Associates, Inc. 

### SDG: 1003151



### Project: Owosso Graphic Arts 

## ORGANIC ANALYSIS DATA SHEET

USEPA-8270C

Matrix: Liquid Waste 

### Laboratory ID: 1003151-01 

### File ID: 1003151-01.D



### Sampled: 03/08/10 10:03 

### Prepared: 03/17/10 10:40 

### Analyzed: 03/17/10 15:25



### Solids: Preparation: Direct Injection 

### Initial/Final: 0.05 mL / 50 mL



### OC Batch: 1006710 Sequence: 0C18017 

### Calibration: 0 C 

### 18005 Instrument: 308

872-50-4 n-methylpyrrolidone I 8.257 

### EST. CONC. (mg/L) Q CAS No. Tentatively Identified Compound RT

3800 000 

# 1 Internal Standard 1 Area I RT Ref. Area Ref. RT 

### Q

1,4-Dichlorobenzene-d4 338939 7.901 223342 7.896 

### Naphthalene-d8 1049485 10.641 668992 10.635 

### Acenaphthene-d10 671734 14.762 445098 14.762



### Phenanthrene-d10 1147886 18.147 793306 18.137 

### Chrysene-d12 1498334 21.698 805004 21.698 

### Perylene-d12 1185613 23.475 649569 23.464

## ORGANIC ANALYSIS DATA SHEET

USEPA-8270C

Laboratory: TriMatrix Laboratories, Inc. SDG: 1003151

Client: CTI and Associates, Inc. Project: Owosso Graphic Arts

Matrix: Sludge Laboratory ID: 1003151-03 File ID: 1003151-03.D

Sampled: 03/08/10 09:33 Prepared: 03/17/10 10:40 Analyzed: 03/17/10 16:00

Solids: Preparation: 3550B Sonication Extract Initial/Final: 29.8 g / 10 mL

QC Batch: 1002373 Sequence: 0C18017 Calibration: 0C18005 Instrument: 308

CAS No. Tentatively Identified Compound RT EST. CONC. (mg/kg) 

## Q

872-50-4 n-methylpyrrolidone 1 8.262 0.40 N

Internal Standard Area RT Ref. Area Ref. RT 

## Q

1,4-Dichlorobenzene-d4 286895 7.93 223342 7.896 Naphthalene-d8 857595 10.664 668992 10.635 Acenaphthene-d10 550531 14.814 445098 14.762

Phenanthrene-d10 1554446 18.218 793306 18.137 Chrysene-d12 437514 21.715 805004 21.698 Perylene-d12 195889 23.504 649569 23.464 *

## ORGANIC ANALYSIS DATA SHEET

USEPA-8270C

Laboratory: 

### TriMatrix Laboratories, Inc. SDG: 

### 1003151

Client: 

### CTI and Associates, Inc. Project: 

### Owosso Graphic Arts

Matrix: 

### Sludge Laboratory ID: 

### 1003151-04 File ID: 

### 1003151-04.D

Sampled: 

### 03/08/10 09:37 Prepared: 

### 03/17/10 10:40 Analyzed: 

### 03/17/10 16:3f

Solids: Preparation: 

### 3550B Sonication Extract Initial/Final: 

### 30.2 g / 10 mL

QC Batch: 

### 1002373 Sequence: 

### 0C18017 Calibration: 

### 0C 18005 Instrument: 308

CAS No. Tentatively Identified Compound 

# 1 RT EST. CONC. (mg/kg) 

## Q

872-50-4 n-methylpyrrolidone I I Not found N

Internal Standard RT Ref. Area

l,4-Dichlorobenzene-d4 Area



### 325633 7.93 223342 Ref. RT Q



### 7.896
Naphthalene-d8 

### 906324 10.687 668992 10.635
Acenaphthene-d10 

### 682657 14.837 445098 14.762

Phenanthrene-d10 

### 1543854 18.247 793306 18.137
Chrysene-d12 

### 382828 21.727 805004 21.698 * Perylene-d12 185367 23.516 649569 23.464 * ,

## ORGANIC ANALYSIS DATA SHEET

USEPA-8270C

Laboratory: TriMatrix Laboratories, Inc. SDG: 1003151

Client: CTI and Associates, Inc. Project: Owosso Graphic Arts

Matrix: Sludge Laboratory ID: 1003151-05 File ID: 1003151-05.D

Sampled: 03/08/10 09:41 Prepared: 03/17/10 10:40 Analyzed: 03/17/10 17:10

Solids: Preparation: 3550B Sonication Extract Initial/Final: 29.9 g / 10 mL



### QC Batch: 1002373 Sequence: 0C18017 Calibration: 0C18005 Instrument: 308

Q CAS No. Tentatively Identified Compound RT

0.020 N 

### 872-50-4 n-methylpyrrolidone I 8.286 EST. CONC. (mg/kg)



# I Internal Standard Area RT Ref. Area Ref. RT Q



### 1,4-Dichlorobenzene-d4 300582 7.954 223342 7.896 Naphthalene-d8 847473 10.699 668992 10.635 Acenaphthene-d10 705088 14.861 445098 14.762

Phenanthrene-d10 1772739 18.264 793306 18.137 * Chrysene-d12 823485 21.674 805004 21.698 Perylene-d12 161946 23.539 649569 23.464 *

## ORGANIC ANALYSIS DATA SHEET

USEPA-8270C

Laboratory: 

### TriMatrix Laboratories, Inc. SDG: 

### 1003151

Client: 

### CTI and Associates, Inc. Project: 

### Owosso Graphic Arts

Matrix: 

### Sludge Laboratory ID: 

### 1003151-06 File ID: 

### 1003151-06.D

Sampled: 

### 03/08/10 09:49 Prepared: 

### 03/17/10 10:40 Analyzed: 

### 03/17/10 17:45

Solids: Preparation: 

### 3550B Sonication Extract Initial/Final: 

### 29.7 g / 10 mL

QC Batch: 

### 1002373 Sequence: 

### 0C18017 Calibration: 

### 0C18005 Instrument: 

### 308

CAS No. Tentatively Identified Compound



### 872-50-4 n-methylpyrrolidone 

# I 1 RT EST. CONC. (mg/kg) Q



### Not found N

Internal Standard Area RT Ref. Area Ref. RT

1,4-Dichlorobenzene-d4 

### 295350 7.954 223342 7.896 Naphthalene-d8 

### 850290 10.716 668992 10.635 Acenaphthene-d10 

### 593990 14.878 445098 14.762

Phenanthrene-d10 

### 1565170 18.276 793306 18.137 Chrysene-d12 

### 319297 21.756 805004 21.698 Perylene-d12 

### 153242 23.563 649569 23.464 *

# METHOD BLANK DATA SHEET

USEPA-8270C

Laboratory: TriMatrix Laboratories, Inc. 

### SDG: 1003151



### Client: CTI and Associates, Inc. 

### Project: Owosso Graphic Arts



### Matrix: Waste 

### Laboratory ID: 1002373-BLK1 

### File ID: 1002373-blkl.D



### Prepared: 03/17/10 10:40 

### Preparation: 3550B Sonication Extract 

### lnitial/Final: 30 g / 10 mL



### Analyzed: 03/17/10 14:50 

### Instrument: 308

QC Batch: 1002373 

### Sequence: 0C18017 

### Calibration: 0C18005

CAS No. Tentatively Identified Compound RT Concentration 

### Unit Q



### 872-50-4 n-methylpyrrolidone I Not found mg/kg N

Internal Standard Area RT Ref. Area Ref. RT 

### Q

I ,4-Dichlorobenzene-d4 322253 7.901 223342 7.896

Naphthalene-d8 983790 10.64 668992 10.635

Acenaphthene-d10 629471 14.761 445098 14.762

Phenanthrene-d10 1059263 18.142 793306 18.137

Chrysene-d12 1272751 21.697 805004 21.698 t Perylene-d12 1044725 23.475 649569 23.464

## INTERNAL STANDARD AREA AND RT SUMMARY

USEPA-8270C

Laboratory: TriMatrix Laboratories, Inc. SDG: 1003151

Client: CTI and Associates, Inc. Project: Owosso Graphic Arts

Sequence: 0C18017 Instrument: 308

Matrix: Waste Calibration: 0C18005

Reference Reference Area % RT Diff

Internal Standard Response RT Response RT Area % Limits RT Diff Limit Q

Blank (1002373-BLK1 ) Lab File ID: 1002373-blkl.D Analyzed: 03/17/10 14:50

1,4-Dichlorobenzene-d4 322253 7.901 223342 7.896 144 50 - 200 0.0050 +/-0.50

Naphthalene-d8 983790 10.64 668992 10.635 147 50 - 200 0.0050 +1-0.50

Acenaphthene-d 10 629471 14.761 445098 14.762 141 50 - 200 -0.0010 +/-0.50

Phenanthrene-d10 1059263 18.142 793306 18.137 134 50 - 200 0.0050 +1-0.50

Chrysene-d12 1272751 21.697 805004 21.698 158 50 - 200 -0.0010 +/-0.50

Perylene-d12 1044725 23.475 649569 23.464 161 50 - 200 0.0110 +/-0.50

Raw Product - NMP (1003151-01 ) Lab File ID: 1003151-01.D Analyzed: 03/17/10 15:25

1,4-Dichlorobenzene-d4 338939 7.901 223342 7.896 152 50 - 200 0.0050 +/-0.50

Naphthalene-d8 1049485 10.641 668992 10.635 157 50 - 200 0.0060 +/-0.50

Acenaphthene-d10 671734 14.762 445098 14.762 151 50 - 200 0.0000 +/-0.50

Phenanthrene-d10 1147886 18.142 793306 18.137 145 50 - 200 0.0050 +1-0.50

Chrysene-d12 1498334 21.698 805004 21.698 186 50 - 200 0.0000 +/-0.50

Perylene-d12 1185613 23.475 649569 23.464 183 50 - 200 0.0110 +/-0.50

OGA Composite 1 (1003151-03 ) Lab File ID: 1003151-03.D Analyzed: 03/17/10 16:00

1,4-Dichlorobenzene-d4 286895 7.93 223342 7.896 128 50 - 200 0.0340 +1-0.50

Naphthalene-d8 857595 10.664 668992 10.635 128 50 - 200 0.0290 +/-0.50

Acenaphthene-d10 550531 14.814 445098 14.762 124 50 - 200 0.0520 +1-0.50

Phenanthrene-d10 1554446 18.218 793306 18.137 196 50 - 200 0.0810 +/-0.50

Chrysene-d12 437514 21.715 805004 21.698 54 50 - 200 0.0170 +/-0.50

Perylene-d12 195889 23.504 649569 23.464 30 50 - 200 0.0400 +/-0.50 *

OGA Composite 2 (1003151-04) Lab File ID: 1003151-04.D Analyzed: 03/17/10 16:35

1,4-Dichlorobenzene-d4 325633 7.93 223342 7.896 146 50 - 200 0.0340 +/-0.50

Naphthalene-d8 906324 10.687 668992 10.635 135 50 - 200 0.0520 +1-0.50

Acenaphthene-d10 682657 14.837 445098 14.762 153 50 - 200 0.0750 +/-0.50

Phenanthrene-d10 1543854 18.247 793306 18.137 195 50 - 200 0.1100 +/-0.50

Chrysene-d12 382828 21.727 805004 21.698 48 50 - 200 0.0290 +/-0.50 *

Perylene-d12 185367 23.516 649569 23.464 29 50 - 200 0.0520 +/-0.50 *

OGA Composite 3 (1003151-05) Lab File ID: 1003151-05.D Analyzed: 03/17/10 17:10

1,4-Dichlorobenzene-d4 300582 7.954 223342 7.896 135 50 - 200 0.0580 +/-0.50

Naphthalene-d8 847473 10.699 668992 10.635 127 50 - 200 0.0640 +/-0.50

Acenaphthene-d10 705088 14.861 445098 14.762 158 50 - 200 0.0990 +/-0.50

Phenanthrene-d10 1772739 18.264 793306 18.137 223 50 - 200 0.1270 +/-0.50 *

Chrysene-d12 823485 21.674 805004 21.698 102 50 - 200 -0.0240 +1-0.50

Perylene-d12 161946 23.539 649569 23.464 25 50 - 200 0.0750 +1-0.50 *

## INTERNAL STANDARD AREA AND RT SUMMARY

USEPA-8270C

Laboratory: TriMatrix Laboratories, Inc. SDG: 1003151

Client: CTI and Associates, Inc. Project: Owosso Graphic Arts

Sequence: 0C18017 Instrument: 308

Matrix: Waste Calibration: 0C18005



### Reference Reference Area % RT Diff

Internal Standard Response RT Response RT Area % Limits RT Diff Limit

OGA Composite 4 (1003151-06) Lab File ID: 1003151-06.0 Analyzed: 03/17/10 17:45

l,4-Dichlorobenzene-d4 295350 7.954 223342 7.896 132 50 - 200 0.0580 +/-0.50

Naphthalene-d8 850290 10.716 668992 10.635 127 50 - 200 0.0810 +/-0.50

Acenaphthene-d10 593990 14.878 445098 14.762 133 50 - 200 0.1160 +/-0.50

Phenanthrene-d10 1565170 18.276 793306 18.137 197 50 - 200 0.1390 +1-0.50

Chr y sene-d12 319297 21.756 805004 21.698 40 50 - 200 0.0580 +/-0.50 *

Perylene-d 12 153242 23.563 649569 23.464 24 50 - 200 0.0990 +1-0.50 *

## PREPARATION BATCH 1002373 

## I Page 1 of 1



### Semivolatiles MS, Waste, 3550B Sonication Extraction

Surrogate #1 = 9100689 (Pre-Prep)

Batch Comments: (none)

Work Order Analysis Work Order Analysis Work Order Analysis

1003151 8270C TIC Analysis

Initial Final uL
Lab Number Contain Prepared By (g) (m L) Surrogate Source ID Spike ID uL Spike Client / QC Type Extraction Comments

1002373-BLK1 Mar-17-10 10:40 BJH 30 10 1000 BLANK

1003151-03 A Mar-17-10 10:40 BJH 29.8 10 1000 CTI and Associates, Inc. n-methylpyrrolidone (NMP)

1003151-04 A Mar-17-10 10:40 BJH 30.2 10 1000 CTI and Associates, Inc. n-methylpyrrolidone (NMP)

1 0031 51-05 A Mar-17-10 10:40 BJH 29.9 10 1000 CTI and Associates, Inc. n-methylpyrrolidone (NMP)

1003151-06 A Mar-17-10 10:40 BJH 29.7 10 1000 CTI and Associates, Inc. n-methylpyrrolidone (NMP)

### TriMatrix Laboratories, Inc. 

## PREPARATION BATCH 

# J 1006710 Page 1 of 1



### Semivolatiles MS, Water, Direct Injection

Surrogate #1 = 9100689 (Pre-Prep)

Batch Comments: From 1002373 on Jul-09-10 by JPG Printed: 7/9/2010 8:35:44AM



### Work Order Analysis Work Order 

### Analysis Work Order Analysis

1003151 8270C TIC Analysis

Initial Final uL
Lab Number Contain Prepared By (mL) (mL) Surrogate Source ID Spike ID uL Spike Client / QC Type Extraction Comments

1003151-01 A Mar-17-10 10:40 BJH 0.05 50 100 CTI and Associates, Inc. Diluted 100 ul/10mI prior to injectionLibrary Search Compound Report

Data Path : C:\msdchem\1\DATA\031710\

Data File : 1003151-03.D Acq On : 17 Mar 2010 16:00

Operator : JLB
Sample : 1003151-03

Misc

ALS Vial : 34 Sample Multiplier: 1

Quant Method : C:\msdchem\l\METHODS\030910bna.M Quant Title : 8270/625 BNA

TIC Library : C:\Database\NIST05.L TIC Integration Parameters:.lscint.p

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

Peak Number 1 4-(Pyrrolidin-2-ylcarbonyl)... Concentration Rank 1

R.T. EstConc Area Relative to ISTD R.T.

8.117 5.00 ng/uL 2252810 1,4-Dichlorobenzene-d4 7.930

Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 4-(Pyrrolidin-2-ylcarbonyl)morph... 184 C9H16N202 1000305-37-7 56

2 (S)-(+)-2-Pyrrolidinemethanol 101 C5H11NO 023356-96-9 40 3 (S)-(+)-2-(Methoxymethyl)pyrroll... 115 C6H13NO 063126-47-6 40
4 (2-Pyrrolidinyljmethylamine 100 C5H12N2 1000131-13-6 39 5 Azetidine, 1,1'-methylenebis- 126 C7H14N2 038455-24-2 17Library Search Compound Report

Data Path : C:\msdchem\1\DATA\031710\

Data File : 1003151-04.D Acq On : 17 Mar 2010 16:35 Operator : JLB
Sample : 1003151-04

Misc

ALS Vial : 35 Sample Multiplier: 1

Quant Method : C:\msdchem\1\METHODS\030910bna.M Quant Title : 8270/625 BNA

TIC Library : C:\Database\NIST05.L TIC Integration Parameters: lscint.p

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

Peak Number 1 3,7-Dimethy1-1,7-octadien-3... Concentration Rank 1

R.T. EstConc Area Relative to ISTD R.T.

8.134 5.00 ng/uL 2495340 1,4-Dichlorobenzene-d4 7.930

Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 3,7-Dimethy1-1,7-octadien-3-amine 153 C1OH19N 077984-56-6 59 2 Pyrrolidine, 2-(hydroxymethyl)- 101 C5H11NO 1000163-39-1 56 3 L-Proline, ethyl ester 143 C7H13NO2 005817-26-5 50 4 [2-Pyrrolidinyllmethylamine 100 C5H12N2 1000131-13-6 40 5 4-(Pyrrolidin-2-ylcarbonyl)morph... 184 C9H16N202 1000305-37-7 39Library Search Compound Report

Data Path : C:\msdchem\1\DATA\031710\

Data File : 1003151-05.D

Acq On : 17 Mar 2010 17:10

Operator : JLB
Sample : 1003151-05

Misc

ALS Vial : 37 Sample Multiplier: 1

Quant Method : C:\msdchem\l\METHODS\030910bna.M
Quant Title : 8270/625 BNA

TIC Library : C:\Database\NIST05.L TIC Integration Parameters: lscint.p

Peak Number 1 Phenol-d6- Concentration Rank 1

R.T. EstConc Area Relative to ISTD R.T.

8.128 5.00 ng/uL 8459700 1,4-Dichlorobenzene-d4 7.954

Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 Phenol-d6- 100 C6D60 013127-88-3 32 2 Pyrrolidine, 2.alpha.-(1-pyrroli... 168 C9H16N20 1000126-78-6 28 3 5-Amino-3-methyl-1,2,4-oxadiazole 99 C3H5N30 003663-39-6 12 4 3,5-Diamino-1,2,4-triazole 99 C2H5N5 001455-77-2 9 5 2-Piperidinone 99 C5H9NO 000675-20-7 9

## SDG CASE NARRATIVE

Sample Receipt and Login -- Work Order: 1003151

TriMatrix Laboratories received the cooler(s) for this work order on March 09, 2010, at 17: lOpm. Receiving documents include field chain-of-custody (COC) record(s), sample receipt form(s), and TriMatrix Courier shipping document(s). The condition of the custody seals, the type and location of the coolant, and the temperatures recorded for each cooler are presented on the TriMatrix Sample Receiving / Log

- 

### In Checklist provided in section A of this package. The receipt temperature of the samples was determined by using an infrared thermometer to record the temperature of three random samples of varying container types and the accompanying temperature blank, if present.

Samples were scheduled for the analyses listed on the corresponding COC form. Field IDs and assigned laboratory identifiers are presented in the table below.



### Laboratory Date Field Sample Name Matrix Sample ID Sampled

Raw Product - NMP 1003151-01 Liquid Waste 3/8/2010

Trip Blank 1003151-02 Water 3/8/2010

OGA Composite 1 1003151-03 Sludge 3/8/2010

OGA Composite 2 1003151-04 Sludge 3/8/2010

OGA Composite 3 1003151-05 Sludge 3/8/2010

OGA Composite 4 1003151-06 Sludge 3/8/2010

No administrative issues were encountered during the receipt and analysis of this work order.

The following technical issues were encountered during the receipt and analysis of this work order:

During the analysis of the samples for the tentative identification of nmethylpyrrolidone, the samples had very low to no recovery for the acid surrogate compounds that were spiked into them. In addition, all of the samples had failing internal standard recoveries for perylene-d12, and sample
1003151-04 and 1003151-06 had failing internal standard recoveries for chrysene-d12. The poor surrogate recoveries were the direct result of the sample matrix, which caused degradation of the injection port and the analytical column. Further, the non-target analytes in the sample matrix had
concentrations such that the response of the internal standards mentioned above were suppressed below their acceptance limits.

These surrogates and internal standards, however, were not associated with nmethylpyrrolidone, and as such do not have an impact on the data quality of the results. N-methylpyrrolidone is considered a basic analyte, so the low acid recoveries are not applicable. All of the base/neutral surrogate
compounds had acceptable recoveries with one exception - sample 1003151-05 - which also had a low recovery for the base/neutral surrogate ortho-terphenyl.
This sample has been qualified as estimated based on the low recovery. The
internal standard associated with n-methylpyrrolidone is 1,4-dichlorobenzened4, which had acceptable recovery in all of the samples.

## SDG CASE NARRATIVE

Attachment 2 Statement of Data Qualifications

Tentatively Identified Compound Scan - EPA Method 8270C

Qualification: One or more of the internal standards for this sample had recoveries outside of the method

acceptance windows. However, the internal standard associated with the target analyte has
acceptable recovery. No qualification is needed.

Analysis: USEPA-8270C

Sample/Analyte: 1003151-03 OGA Composite 1

1003151-04 OGA Composite 2

1003151-05 OGA Composite 3

1003151-06 OGA Composite 4



### Qualification: This sample was used for peak identification only. No quantitative result was obtained. Sample

was prepared by dilution into methylene chloride then directly injected.

Analysis: USEPA-8270C

Sample/Analyte: 1003151-01 Raw Product - NMP



### Qualification: This sample had recoveries of the acid surrogates that were out of control due to sample matrix

interference. The base/neutral surrogate OTP was also out of control due to matrix interference.

Result should be considered as estimated.

Analysis: USEPA-8270C

Sample/Analyte: 1003151-05 OGA Composite 3



### Qualification: This sample had recoveries of the acid surrogates that were out of control due to sample matrix

interference. The target analyte was not an acidic compound, therefore, no qualification is

necessary.

Analysis: USEPA-8270C

Sample/Analyte: 1003151-03 OGA Composite 1

1003151-04 OGA Composite 2

1003151-06 OGA Composite 4