# URS Corp. - RTP

1600 Perimeter Park Dr. Morrisville, NC 27560



# AES ICR Test - Units 1 & 2 Guayama, PR

Client # 39682175

PO # 226013.US



# Analytical Report (0310-107)

EPA Method 316

Formaldehyde



# Enthalpy Analytical, Inc.

Phone: (919) 850 - 4392 / Fax: (919) 850 - 9012 / www.enthalpy.com
2202 Ellis Road Durham, NC 27703 - 5518

### I certify that to the best of my knowledge a ll analytical data presented in this report:

 Have been checked for completeness

 Are accurate, error-free, and legible

 Have been conducted in accordance with approved prot ocol, and that all deviations and analytical problems are summarized in the appropriate narrative(s)

This analytical report was prepared in Portable Document Format (.PDF) and contains  pages.

# Summary of Results

## Compound Sample ID / Catch Weight ( μ g)

U1-1 U1- 2 U1-3 Formaldehyde 17.6 J 17.4 J 12.4 ND

U2-1 U2- 2 U2-3 Formaldehyde 11.3 ND 18.1 J 12.6 ND

U1-FB U1-H2O-RB Eng 14 R3 Formaldehyde 10.3 J 3.22 ND 2 ND Company

Analyst
Parameters # Samples URS Corp.
EO

EPA Method 316 6 runs, 1 RB, 1 FB Client #
Job #
PO # Report Date 39682175
0310-107
226013.US
03/23/10

# ResultsMDL 0.0200 ( μ g/mL) Lower Curve Limit 0.273 ( μ g/mL) LOQ 0.273 ( μ g/mL) Upper Curve Limit 3.28 ( μ g/mL) Compound Formaldehyde

Sample ID Lab ID Absorbance Analytical
Concentration (μg/mL) Dilution Volume (mL) Catch Weight

(μg) Qual

U1-1 Imp 1 11 0.0159 0.0335 1 527 17.6 J U1-1 Imp 2 & 3 14 0.0032 0.0200 1 177 3.54 ND

17.6 J

U1-2 Imp 1 12 0.0181 0.0382 1 454 17.4 J U1-2 Imp 2 & 3 15 0.0004 0.0200 1 210 4.20 ND

17.4 J

U1-3 Imp 1 13 0.0050 0.0200 1 618 12.4 ND U1-3 Imp 2 & 3 16 0.0089 0.0200 1 209 4.18 ND

12.4 ND

U2-1 Imp 1 21 0.0000 0.0200 1 565 11.3 ND U2-1 Imp 2 & 3 24 0.0000 0.0200 1 212 4.23 ND

11.3 ND

U2-2 Imp 1 22 0.0145 0.0305 1 593 18.1 J U2-2 Imp 2 & 3 25 0.0000 0.0200 1 156 3.12 ND

18.1 J

U2-3 Imp 1 23 0.0064 0.0200 1 629 12.6 ND U2-3 Imp 2 & 3 26 0.0000 0.0200 1 153 3.07 ND

12.6 ND

U1-FB Imp 1 17 0.0207 0.0435 1 237 10.3 J U1-FB Imp 2 & 3 20 0.0067 0.0200 1 209 4.18 ND

10.3 J

U1-H2O-RB 19 0.0049 0.0200 1 161 3.22 ND

Method Blank 10 0.0000 0.0200 1 1.00 0.0200 ND

Method Blank 3 0.0003 0.0200 1 1.00 0.0200 ND

Method Blank 3 0.0009 0.0200 1 1.00 0.0200 ND Company

Analyst
Parameters # Samples URS Corp.
EO

EPA Method 316 6 runs, 1 RB, 1 FB Client #
Job #
PO # Report Date 39682175
0310-107
226013.US
03/23/10MDL 0.0200 ( μ g/mL) Lower Curve Limit 0.273 ( μ g/mL) LOQ 0.273 ( μ g/mL) Upper Curve Limit 3.28 ( μ g/mL) Compound Formaldehyde

Sample ID Lab ID Absorbance Analytical
Concentration (μg/mL) Dilution Volume (mL) Catch Weight

(μg) Qual Company

Analyst
Parameters # Samples URS Corp.
EO

EPA Method 316 6 runs, 1 RB, 1 FB Client #
Job #
PO # Report Date 39682175
0310-107
226013.US
03/23/10

LD / U1-1 Imp 2&3 4 0.0000 0.0200 1 177 3.54 ND
% Difference NA

AD / U1-1 Imp 2&3 5 0.0000 0.0200 2 177 7.08 ND
%Difference NA

MS / U1-2 Imp 2&3 6 0.5096 1.0727 1 2.50 2.68 Spike Amount 2.73

Native Amount 0.00 Spike Recovery (%) 98.2%

MS / U2-1 Imp 1 4 0.4688 0.9869 1 2.50 2.47 Spike Amount 2.73

Native Amount 0.00 Spike Recovery (%) 90.4%

Spec32pg103 SS#1 8 0.6231 1.3117 1 1.00 1.31 Spike Amount 1.20 Spike Recovery (%) 109%

Spec32pg103 SS#2 9 0.6222 1.3098 1 1.00 1.31 Spike Amount 1.20 Spike Recovery (%) 109%

# Narrative Summary

# Enthalpy Analytical Narrative Summary

Company 

### URS Corp. - RTP Client # 

### 39682175

Analyst 

### EO Job # 

### 0310-107

Parameters 

### EPA Method 316 PO # 

### 226013.US

# Samples 

### 6 runs, 1 RB, and 1 FB Report Date 

### March 23, 2010

Custody Heather Tarjeft received the samples on 3/18/10 after being relinquished by URS Corp. - RTP. The samples were received at 4.2 oC in good condition. Prior to, during, and after analysis, the samples were kept under lock with access only to authorized personnel by Enthalpy Analytical, Inc.

Analysis The samples were analyzed for formaldehyde using the analytical procedures in EPA Method 316, Sampling and Analysis for Formaldehyde Emissions from Stationary Sources in the Mineral Wool and Wool Fiberglass Industries (40 CFR Part 63, Appendix A).

The reagents (pararosaniline, sodium sulfite, standards) were made following the procedures in Section 7.5. The sodium sulfite reagent was used within 24 hours of prepara tion. Formaldehyde standards were made by diluting a certified solution with DI water. Samples and standards are analyzed following the procedures in Section 11.0. Any sample dilutions were performed on an aliquot of the original sample prior to the addition of acetylacetone reagent.

The Hewlett Packard Model 8452A, Diode Array Spectrophotometer ("Larry" S/N 2610A 00705) was operated at 570 nm.

Calibration The calibration curves are located in the Calibration Curve Spectra section of this report.

QC Notes The following Quality Control Samples (9.0) were analyzed: field blank (9.2.1), method blank (9.2.3) and an a lternate dilution (not required by the method). All samples met the method-specified quality control
limits.

All sample preparation and analytical holding times specified in the
method were met.

Reporting Notes The results presented in this report are representative of the samples as provided to the laboratory.

Enthalpy Analytical, Inc. is accredited to perform this method for compliance purposes by the National Environmental Laboratory Accreditation Conference (NELAC) through the Louisiana Environmental Laboratory Accreditation Program (LELAP), certificate
number 04010.

# General Reporting Notes

The following are general reporting notes that are a pplicable to all Enthalpy Analytical, Inc. data reports, unless specifically noted otherwise.

 The acronym MDL represents the Minimum Detection Limit. Below this value the laboratory cannot determine the presence of the analyte of interest reliably.

 The acronym LOQ represents the Limit of Quantification. Below this value the laboratory cannot quantitate the analyte of interest within the criteria of the method.

 The acronym ND following a value indicates a non-detect or analytical result below the MDL.

 The letter J following a value indicates an analytical r esult between the MDL and the LOQ. A J flag indicates that the laboratory can positively identify th e analyte of interest as present, but the value
should be considered an estimate.

 The letter E following a value indicates an analytical r esult exceeding 100% of the highest calibration point. The associated value should be considered as an estimate.

 The acronym DF represents Dilution Factor. This number represents dilution of the sample during the preparation and/or analysis process. The analyti cal result taken from a laboratory instrument is multiplied by the DF to determine the final undiluted sample results.

 The addition of MS to the Sample ID represents a Matrix Sp ike. An aliquot of an actual sample is spiked with a known amount of analyte so that a per cent recovery value can be determined. This shows what effect the sample matrix may have on the target analyte, i.e. whether or not anything in the sample matrix interferes with the analysis of the analyte(s).

 The addition of MSD to the Sample ID represents a Matrix Spike Duplicate. Prepared in the same manner as an MS, the use of duplicate matrix spikes allows further confirmation of laboratory quality by showing the consistency of results gained by performing the same steps multiple times.

 The addition of LD to the Sample ID represents a Laborat ory Duplicate. The analyst prepares an additional aliquot of sample for testing and the resu lts of the duplicate analysis are compared to the
initial result. The result should have a difference value of within 10% of the initial result (if the results of the original analysis are greater than the LOQ).

 The addition of AD to the Sample ID represents an Alte rnate Dilution. The analyst prepares an additional aliquot at a different dilution factor (usu ally double the initial factor). This analysis helps confirm that no additional compound is present and coel uting or sharing absorbance with the analyte of interest, as they would have a different res ponse/absorbance than the analyte of interest.

 The Sample ID LCS represents a Laboratory Control Sample. Clean matrix, similar to the client sample matrix, prepared and analyzed by the laborator y using the same reagents, spiking standards and procedures used for the client samples. The LCS is used to assess the control of the laboratory’s analytical system. Whenever spikes are prepared for our client projects, two extra spikes are prepared. The extras (randomly chosen) are labeled with the asso ciated project number and kept in-house at the appropriate temperature conditions. When the project samples are received for analysis, the LCSs are analyzed to confirm that the analyte could be recovered from the media, separate from the samples which were used on the project and which may have been affected by source matrix, sample collection and/or sample transport.

# General Reporting Notes

(continued)

 Significant Figures : Where the reported value is much greater than unity (1.00) in the units expressed, the number is rounded to a whole number of units, rather than to 3 significant figures. For example, a value of 10,456.45 ug catch is rounded to 10,456 ug. Ther e are five significant digits displayed, but no confidence should be placed on more than two significant digits.

 Manual Integration : The data systems used for processing w ill flag manually integrated peaks with an “M”. There are several reasons a peak may be manually integrated. These reasons will be identified by the following two letter designations. The peak was not integrated by the software “NI” , the peak

was integrated incorrectly by the software “II” or the wrong peak was integrated by the software
“WP” . These codes will accompany the analyst’s ma nual integration stamp placed next to the compound name.

# Sample Custody

# Sample Spectra

# Calibration Curve Spectra

# This Is The Last Page Of This Report.