1941 Reymet Road l Richmond, Virginia 23237 l Certificate

1941 Reymet Road l Richmond, Virginia 23237 l Tel: (804)-358-8295 Fax: (804)-358-8297

Laboratory Order ID 17I0487

Certificate of Analysis

Client Name:

Enclosed are the results of analyses for samples received by the laboratory on 09/15/2017 14:20. If you

have any questions concerning this report, please feel free to contact the laboratory.

Sincerely,

Ted Soyars

Laboratory Manager

Manassas, VA 20109

8854 Rixlew Lane

Purchase Order:

2500489Project Number:

Date Issued:

Date Received:

Submitted To:

Client Site I.D.:

September 22, 2017 15:54

September 15, 2017 14:20APEX Companies, LLC. -Manassas

William Thomas

End Notes:

The test results listed in this report relate only to the samples submitted to the laboratory and as received by the Laboratory.

Unless otherwise noted, the test results for solid materials are calculated on a wet weight basis. Analyses for pH, dissolved oxygen,

temperature, residual chlorine and sulfite that are performed in the laboratory do not meet NELAC requirements due to extremely

short holding times. These analyses should be performed in the field. The results of field analyses performed by the Sampler

included in the Certificate of Analysis are done so at the client�s request and are not included in the laboratory�s fields of certification

nor have they been audited for adherence to a reference method or procedure.

The signature on the final report certifies that these results conform to all applicable NELAC standards unless otherwise specified.

For a complete list of the Laboratory�s NELAC certified parameters please contact customer service.

This report shall not be reproduced except in full without the expressed and written approval of an authorized representative of Air

Water & Soil Laboratories, Inc.

North Stafford High School

Final Report

Page 1 of 24

Client Site I.D.:

Project Number:Submitted To:

Date Issued:APEX Companies, LLC. -Manassas

8854 Rixlew Lane

2500489William Thomas

Manassas VA, 20109



Client Name:

Purchase Order:

9/22/2017 15:54


Final Report

ANALYTICAL REPORT FOR SAMPLES

Laboratory Order ID 17I0487

MatrixSample ID Laboratory ID Date Sampled Date Received

NSH3-BS-RM117 17I0487-01 09/15/2017 14:20Drinking Water 09/15/2017 06:04

NSH3-CS-RM502A5 17I0487-02 09/15/2017 14:20Drinking Water 09/15/2017 06:32

NSH3-CS-RM525 17I0487-03 09/15/2017 14:20Drinking Water 09/15/2017 06:42



NSH3-CF-RM534 17I0487-06 09/15/2017 14:20Drinking Water 09/15/2017 06:35

NSH3-CS-RM538-ST 17I0487-07 09/15/2017 14:20Drinking Water 09/15/2017 06:39

NSH3-CS-RM433-1 17I0487-08 09/15/2017 14:20Drinking Water 09/15/2017 06:51

NSH3-CS-RM303-A 17I0487-09 09/15/2017 14:20Drinking Water 09/15/2017 06:59

NSH3-CS-Prep 17I0487-10 09/15/2017 14:20Drinking Water 09/15/2017 07:09

NSH3-CS-RM302-2 17I0487-11 09/15/2017 14:20Drinking Water 09/15/2017 06:56


NSH3-CS-324-322 17I0487-13 09/15/2017 14:20Drinking Water 09/15/2017 07:04


NSH3-Field Blank 17I0487-15 09/15/2017 14:20Drinking Water 09/15/2017 05:54

Page 2 of 20Page 2 of 24

Client Site I.D.:



8854 Rixlew Lane


Manassas VA, 20109



Client Name:

Purchase Order:

9/22/2017 15:54


Final Report

Laboratory Order ID: 17I0487

ResultParameter

Reporting

LimitMethod Qual AnalystAnalysis

Date/TimeD.F. Samp IDSample Prep

Date/Time

NSH3-BS-RM117 Laboratory Sample ID:Sample I.D. 17I0487-01

Analytical Results

Grab Date/Time: 09/15/2017 06:04

Metals (Total) by EPA 200 Series Methods

EPA200.8 R5.4 2.00 ug/L BG1.00 101 09/18/17 15:00 09/19/17 15:28Lead


Client Site I.D.:



8854 Rixlew Lane


Manassas VA, 20109



Client Name:

Purchase Order:

9/22/2017 15:54


Final Report


ResultParameter

Reporting



Date/Time

NSH3-CS-RM502A5 Laboratory Sample ID:Sample I.D. 17I0487-02

Analytical Results

Grab Date/Time: 09/15/2017 06:32


EPA200.8 R5.4 <1.00 ug/L BG1.00 102 09/18/17 15:00 09/19/17 15:32Lead


Client Site I.D.:



8854 Rixlew Lane


Manassas VA, 20109



Client Name:

Purchase Order:

9/22/2017 15:54


Final Report


ResultParameter

Reporting



Date/Time

NSH3-CS-RM525 Laboratory Sample ID:Sample I.D. 17I0487-03

Analytical Results

Grab Date/Time: 09/15/2017 06:42


EPA200.8 R5.4 4.66 ug/L BG1.00 103 09/18/17 15:00 09/19/17 15:36Lead


Client Site I.D.:



8854 Rixlew Lane


Manassas VA, 20109



Client Name:

Purchase Order:

9/22/2017 15:54


Final Report


ResultParameter

Reporting



Date/Time


Analytical Results

Grab Date/Time: 09/15/2017 06:46


EPA200.8 R5.4 <1.00 ug/L BG1.00 104 09/18/17 15:00 09/19/17 15:40Lead


Client Site I.D.:



8854 Rixlew Lane


Manassas VA, 20109



Client Name:

Purchase Order:

9/22/2017 15:54


Final Report


ResultParameter

Reporting



Date/Time


Analytical Results

Grab Date/Time: 09/15/2017 06:16


EPA200.8 R5.4 1.44 ug/L BG1.00 105 09/18/17 15:00 09/19/17 15:43Lead


Client Site I.D.:



8854 Rixlew Lane


Manassas VA, 20109



Client Name:

Purchase Order:

9/22/2017 15:54


Final Report


ResultParameter

Reporting



Date/Time

NSH3-CF-RM534 Laboratory Sample ID:Sample I.D. 17I0487-06

Analytical Results

Grab Date/Time: 09/15/2017 06:35


EPA200.8 R5.4 233 ug/L BG10.0 1006RE1 09/18/17 15:00 09/20/17 10:49Lead


Client Site I.D.:



8854 Rixlew Lane


Manassas VA, 20109



Client Name:

Purchase Order:

9/22/2017 15:54


Final Report


ResultParameter

Reporting



Date/Time

NSH3-CS-RM538-ST Laboratory Sample ID:Sample I.D. 17I0487-07

Analytical Results

Grab Date/Time: 09/15/2017 06:39


EPA200.8 R5.4 7.58 ug/L BG1.00 107 09/18/17 15:00 09/19/17 15:58Lead


Client Site I.D.:



8854 Rixlew Lane


Manassas VA, 20109



Client Name:

Purchase Order:

9/22/2017 15:54


Final Report


ResultParameter

Reporting



Date/Time

NSH3-CS-RM433-1 Laboratory Sample ID:Sample I.D. 17I0487-08

Analytical Results

Grab Date/Time: 09/15/2017 06:51


EPA200.8 R5.4 3.27 ug/L BG1.00 108 09/18/17 15:00 09/19/17 16:02Lead


Client Site I.D.:



8854 Rixlew Lane


Manassas VA, 20109



Client Name:

Purchase Order:

9/22/2017 15:54


Final Report


ResultParameter

Reporting



Date/Time

NSH3-CS-RM303-A Laboratory Sample ID:Sample I.D. 17I0487-09

Analytical Results

Grab Date/Time: 09/15/2017 06:59


EPA200.8 R5.4 95.8 ug/L BG1.00 109 09/18/17 15:00 09/19/17 16:05Lead


Client Site I.D.:



8854 Rixlew Lane


Manassas VA, 20109



Client Name:

Purchase Order:

9/22/2017 15:54


Final Report


ResultParameter

Reporting



Date/Time

NSH3-CS-Prep Laboratory Sample ID:Sample I.D. 17I0487-10

Analytical Results

Grab Date/Time: 09/15/2017 07:09


EPA200.8 R5.4 <1.00 ug/L BG1.00 110 09/18/17 15:00 09/19/17 16:09Lead


Client Site I.D.:



8854 Rixlew Lane


Manassas VA, 20109



Client Name:

Purchase Order:

9/22/2017 15:54


Final Report


ResultParameter

Reporting



Date/Time

NSH3-CS-RM302-2 Laboratory Sample ID:Sample I.D. 17I0487-11

Analytical Results

Grab Date/Time: 09/15/2017 06:56


EPA200.8 R5.4 1.26 ug/L BG1.00 111 09/18/17 15:00 09/19/17 16:20Lead


Client Site I.D.:



8854 Rixlew Lane


Manassas VA, 20109



Client Name:

Purchase Order:

9/22/2017 15:54


Final Report


ResultParameter

Reporting



Date/Time


Analytical Results

Grab Date/Time: 09/15/2017 07:06


EPA200.8 R5.4 <1.00 ug/L BG1.00 112 09/18/17 15:00 09/19/17 16:24Lead


Client Site I.D.:



8854 Rixlew Lane


Manassas VA, 20109



Client Name:

Purchase Order:

9/22/2017 15:54


Final Report


ResultParameter

Reporting



Date/Time

NSH3-CS-324-322 Laboratory Sample ID:Sample I.D. 17I0487-13

Analytical Results

Grab Date/Time: 09/15/2017 07:04


EPA200.8 R5.4 <1.00 ug/L BG1.00 113 09/18/17 15:00 09/19/17 16:28Lead


Client Site I.D.:



8854 Rixlew Lane


Manassas VA, 20109



Client Name:

Purchase Order:

9/22/2017 15:54


Final Report


ResultParameter

Reporting



Date/Time


Analytical Results

Grab Date/Time: 09/15/2017 07:01


EPA200.8 R5.4 <1.00 ug/L BG1.00 114 09/18/17 15:00 09/19/17 16:39Lead


Client Site I.D.:



8854 Rixlew Lane


Manassas VA, 20109



Client Name:

Purchase Order:

9/22/2017 15:54


Final Report


ResultParameter

Reporting



Date/Time

NSH3-Field Blank Laboratory Sample ID:Sample I.D. 17I0487-15

Analytical Results

Grab Date/Time: 09/15/2017 05:54


EPA200.8 R5.4 BG<1.00 ug/L 1.00 115 09/18/17 15:00 09/19/17 16:42Lead

Analytical Summary

Sample IDPreparation Factors

Initial / FinalSequence ID Calibration IDBatch IDMethod

EPA200.2/R2.8Preparation Method:Metals (Total) by EPA 200 Series Methods

17I0487-01 BAI0402 SAI0444EPA200.8 R5.4 AI7008250.0 mL / 50.0 mL






17I0487-06RE1 BAI0402 SAI0498EPA200.8 R5.4 AI7009550.0 mL / 50.0 mL











Client Site I.D.:



8854 Rixlew Lane


Manassas VA, 20109



Client Name:

Purchase Order:

9/22/2017 15:54


Final Report

Result Limit

Reporting

Units Level

Spike

Result

Source

%REC

%REC

Limits RPD

RPD

Limit Qual Analyte

Metals (Total) by EPA 200 Series Methods - Quality Control

Air Water and Soil Laboratories, Inc.

Batch BAI0402 - EPA200.2/R2.8

Blank (BAI0402-BLK1) Prepared: 09/18/2017 Analyzed: 09/19/2017

1.00 ug/L<1.00 ug/LLead

LCS (BAI0402-BS1) Prepared: 09/18/2017 Analyzed: 09/19/2017

1.00 50.0 85-11595.6ug/L47.8 ug/L ug/LLead

LCS Dup (BAI0402-BSD1) Prepared: 09/18/2017 Analyzed: 09/19/2017

1.00 50.0 2085-11599.3 3.79ug/L49.7 ug/L ug/LLead

Matrix Spike (BAI0402-MS1) Prepared: 09/18/2017 Analyzed: 09/19/2017Source: 17I0484-01

1.00 50.0 70-13094.3ug/L48.4 ug/L 1.22 ug/LLead

Matrix Spike (BAI0402-MS2) Prepared: 09/18/2017 Analyzed: 09/19/2017Source: 17I0487-10

1.00 50.0 70-13092.7ug/L46.7 ug/L <1.00 ug/LLead

Matrix Spike Dup (BAI0402-MSD1) Prepared: 09/18/2017 Analyzed: 09/19/2017Source: 17I0484-01

1.00 50.0 2070-13092.0 2.40ug/L47.2 ug/L 1.22 ug/LLead

Matrix Spike Dup (BAI0402-MSD2) Prepared: 09/18/2017 Analyzed: 09/19/2017Source: 17I0487-10

1.00 50.0 2070-13094.4 1.78ug/L47.6 ug/L <1.00 ug/LLead


Client Site I.D.:



8854 Rixlew Lane


Manassas VA, 20109



Client Name:

Purchase Order:

9/22/2017 15:54


Final Report

Certified Analyses included in this Report

CertificationsAnalyte

EPA200.8 R5.4 in Potable Water

Lead VELAP

Code Description Lab Number Expires

341 12/31/2017Maryland DE Drinking WaterMdDOE

495 12/31/2017North Carolina DENRNC

001 10/31/2017NELAC-PennsylvaniaPADEP

460021 06/14/2018NELAC-Virginia Certificate #9316VELAP

350 11/30/2017West Virginia DEPWVDEP


Client Site I.D.:



8854 Rixlew Lane


Manassas VA, 20109



Client Name:

Purchase Order:

9/22/2017 15:54


Final Report

Summary of Data Qualifiers

Relative Percent DifferenceRPD

QualifersQual

Denotes sample was re-analyzed-RE

Dilution Factor. Please also see the Preparation Factor in the Analysis Summary section.D.F.

TIC Tentatively Identified Compounds are compounds that are identified by comparing the analyte mass spectral pattern with the NIST spectral library .

A TIC spectral match is reported when the pattern is at least 75% consistent with the published pattern. Compound concentrations are estimated

and are calculated using an internal standard response factor of 1.

PCBs, Total Total PCBs are defined as the sum of detected Aroclors 1016, 1221, 1232, 1248, 1254, 1260, 1262, and 1268.


Pa

ge

21

of 2

4

Page 2

2 o

f 24

Pag

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3 o

f 24

Client Site I.D.:



8854 Rixlew Lane


Manassas VA, 20109



Client Name:

Purchase Order:

9/22/2017 15:54


Final Report

Samples Received at: 22.30°C

How were samples received?

NA

Sample Conditions Checklist

NA

Yes

Yes

Yes

No

Yes

Yes

Yes

No

Yes

Courier

Work Order Comments

Were Custody Seals used? If so, were they received intact?

Are the custody papers filled out completely and correctly?

Do all bottle labels agree with custody papers?

Is the temperature blank or representative sample within acceptable limits? (above freezing to 6°C) or received on ice and

recently taken?

Are all samples within holding time for requested laboratory tests?

Is a sufficient amount of sample provided to perform the tests included?

Are all samples in appropriate containers for the analyses requested?

Were volatile organic containers received?

Are all volatile organic and TOX containers free of headspace?

Is a trip blank provided for each VOC sample set? VOC sample sets include EPA8011, EPA504, EPA8260, EPA624,

EPA8015 GRO, EPA8021, EPA524, and RSK-175.

Are all samples received appropriately preserved? Note that metals containers do not require field preservation but lab

preservation may delay analysis.

Page 24 of 24


Laboratory Order ID 17K0328


Client Name:

Enclosed are the results of analyses for samples received by the laboratory on 11/09/2017 13:50. If you have

any questions concerning this report, please feel free to contact the laboratory.

Sincerely,

Ted Soyars

Laboratory Manager

Manassas, VA 20109

8854 Rixlew Lane

Purchase Order:

[none]Project Number:

Date Issued:

Date Received:

Submitted To:

Client Site I.D.:

November 20, 2017 15:19

November 9, 2017 13:50APEX Companies, LLC. -Manassas

William Thomas

End Notes:

The test results listed in this report relate only to the samples submitted to the laboratory and as received by the Laboratory.

Unless otherwise noted, the test results for solid materials are calculated on a wet weight basis. Analyses for pH, dissolved oxygen,

temperature, residual chlorine and sulfite that are performed in the laboratory do not meet NELAC requirements due to extremely

short holding times. These analyses should be performed in the field. The results of field analyses performed by the Sampler

included in the Certificate of Analysis are done so at the client�s request and are not included in the laboratory�s fields of certification

nor have they been audited for adherence to a reference method or procedure.

The signature on the final report certifies that these results conform to all applicable NELAC standards unless otherwise specified.

For a complete list of the Laboratory�s NELAC certified parameters please contact customer service.

This report shall not be reproduced except in full without the expressed and written approval of an authorized representative of Air

Water & Soil Laboratories, Inc.

North Stafford HS

Final Report

Page 1 of 12

Client Site I.D.:



8854 Rixlew Lane

[none]William Thomas

Manassas VA, 20109



Client Name:

Purchase Order:

11/20/2017 15:19

North Stafford HS

Final Report

ANALYTICAL REPORT FOR SAMPLES

Laboratory Order ID 17K0328

MatrixSample ID Laboratory ID Date Sampled Date Received

NSH3-Field Blank 17K0328-01 11/09/2017 13:50Drinking Water 11/08/2017 14:21

NSH3-FS-EXTENT-17 17K0328-02 11/09/2017 13:50Drinking Water 11/08/2017 14:15

NSH3-FS-EXTENT-7 17K0328-03 11/09/2017 13:50Drinking Water 11/08/2017 14:09

NSH3-FS-EXTENT-2/3 17K0328-04 11/09/2017 13:50Drinking Water 11/08/2017 14:05


Client Site I.D.:



8854 Rixlew Lane


Manassas VA, 20109



Client Name:

Purchase Order:

11/20/2017 15:19

North Stafford HS

Final Report

Laboratory Order ID: 17K0328

ResultParameter

Reporting



Date/Time

NSH3-Field Blank Laboratory Sample ID:Sample I.D. 17K0328-01

Analytical Results

Grab Date/Time: 11/08/2017 14:21


EPA200.8 R5.4 BG<1.00 ug/L 1.00 101 11/14/17 15:00 11/15/17 18:24Lead


Client Site I.D.:



8854 Rixlew Lane


Manassas VA, 20109



Client Name:

Purchase Order:

11/20/2017 15:19

North Stafford HS

Final Report


ResultParameter

Reporting



Date/Time

NSH3-FS-EXTENT-17 Laboratory Sample ID:Sample I.D. 17K0328-02

Analytical Results

Grab Date/Time: 11/08/2017 14:15


EPA200.8 R5.4 <1.00 ug/L BG1.00 102 11/14/17 15:00 11/15/17 18:28Lead


Client Site I.D.:



8854 Rixlew Lane


Manassas VA, 20109



Client Name:

Purchase Order:

11/20/2017 15:19

North Stafford HS

Final Report


ResultParameter

Reporting



Date/Time

NSH3-FS-EXTENT-7 Laboratory Sample ID:Sample I.D. 17K0328-03

Analytical Results

Grab Date/Time: 11/08/2017 14:09


EPA200.8 R5.4 3.21 ug/L BG1.00 103 11/14/17 15:00 11/15/17 18:32Lead


Client Site I.D.:



8854 Rixlew Lane


Manassas VA, 20109



Client Name:

Purchase Order:

11/20/2017 15:19

North Stafford HS

Final Report


ResultParameter

Reporting



Date/Time

NSH3-FS-EXTENT-2/3 Laboratory Sample ID:Sample I.D. 17K0328-04

Analytical Results

Grab Date/Time: 11/08/2017 14:05


EPA200.8 R5.4 1.24 ug/L BG1.00 104 11/14/17 15:00 11/15/17 18:36Lead

Analytical Summary

Sample IDPreparation Factors

Initial / FinalSequence ID Calibration IDBatch IDMethod

EPA200.8 R5.4Preparation Method:Metals (Total) by EPA 200 Series Methods

17K0328-01 BAK0401 SAK0500EPA200.8 R5.4 AK7009750.0 mL / 50.0 mL





Client Site I.D.:



8854 Rixlew Lane


Manassas VA, 20109



Client Name:

Purchase Order:

11/20/2017 15:19

North Stafford HS

Final Report

Result Limit

Reporting

Units Level

Spike

Result

Source

%REC

%REC

Limits RPD

RPD

Limit Qual Analyte

Metals (Total) by EPA 200 Series Methods - Quality Control

Air Water and Soil Laboratories, Inc.

Batch BAK0401 - EPA200.8 R5.4

Blank (BAK0401-BLK1) Prepared: 11/14/2017 Analyzed: 11/15/2017

1.00 ug/L<1.00 ug/LLead

LCS (BAK0401-BS1) Prepared: 11/14/2017 Analyzed: 11/15/2017

1.00 50.0 85-11596.8ug/L48.4 ug/L ug/LLead

LCS Dup (BAK0401-BSD1) Prepared: 11/14/2017 Analyzed: 11/15/2017

1.00 50.0 2085-11594.8 2.10ug/L47.4 ug/L ug/LLead

Matrix Spike (BAK0401-MS1) Prepared: 11/14/2017 Analyzed: 11/15/2017Source: 17K0326-04

1.00 50.0 70-13094.7ug/L47.9 ug/L <1.00 ug/LLead

Matrix Spike (BAK0401-MS2) Prepared: 11/14/2017 Analyzed: 11/15/2017Source: 17K0328-04

1.00 50.0 70-13097.1ug/L49.8 ug/L 1.24 ug/LLead

Matrix Spike Dup (BAK0401-MSD1) Prepared: 11/14/2017 Analyzed: 11/15/2017Source: 17K0326-04

1.00 50.0 2070-13095.3 0.595ug/L48.1 ug/L <1.00 ug/LLead

Matrix Spike Dup (BAK0401-MSD2) Prepared: 11/14/2017 Analyzed: 11/15/2017Source: 17K0328-04

1.00 50.0 2070-13097.9 0.833ug/L50.2 ug/L 1.24 ug/LLead


Client Site I.D.:



8854 Rixlew Lane


Manassas VA, 20109



Client Name:

Purchase Order:

11/20/2017 15:19

North Stafford HS

Final Report

Certified Analyses included in this Report

CertificationsAnalyte

EPA200.8 R5.4 in Potable Water

Lead VELAP

Code Description Lab Number Expires

341 12/31/2017Maryland DE Drinking WaterMdDOE

495 12/31/2017North Carolina DENRNC

460021 06/14/2018NELAC-Virginia Certificate #9439VELAP

350 11/30/2017West Virginia DEPWVDEP


Client Site I.D.:



8854 Rixlew Lane


Manassas VA, 20109



Client Name:

Purchase Order:

11/20/2017 15:19

North Stafford HS

Final Report

Summary of Data Qualifiers

Relative Percent DifferenceRPD

QualifersQual

Denotes sample was re-analyzed-RE

Dilution Factor. Please also see the Preparation Factor in the Analysis Summary section.D.F.

TIC Tentatively Identified Compounds are compounds that are identified by comparing the analyte mass spectral pattern with the NIST spectral library .

A TIC spectral match is reported when the pattern is at least 75% consistent with the published pattern. Compound concentrations are estimated

and are calculated using an internal standard response factor of 1.

PCBs, Total Total PCBs are defined as the sum of detected Aroclors 1016, 1221, 1232, 1248, 1254, 1260, 1262, and 1268.


Page 1

0 o

f 12

Page 1

1 o

f 12

Client Site I.D.:



8854 Rixlew Lane


Manassas VA, 20109



Client Name:

Purchase Order:

11/20/2017 15:19

North Stafford HS

Final Report

Samples Received at: 18.50°C

How were samples received?

NA

Sample Conditions Checklist

NA

Yes

Yes

Yes

No

Yes

Yes

Yes

No

Yes

Courier

Work Order Comments

Were Custody Seals used? If so, were they received intact?

Are the custody papers filled out completely and correctly?

Do all bottle labels agree with custody papers?

Is the temperature blank or representative sample within acceptable limits? (above freezing to 6°C) or received on ice and

recently taken?

Are all samples within holding time for requested laboratory tests?

Is a sufficient amount of sample provided to perform the tests included?

Are all samples in appropriate containers for the analyses requested?

Were volatile organic containers received?

Are all volatile organic and TOX containers free of headspace?

Is a trip blank provided for each VOC sample set? VOC sample sets include EPA8011, EPA504, EPA8260, EPA624,

EPA8015 GRO, EPA8021, EPA524, and RSK-175.

Are all samples received appropriately preserved? Note that metals containers do not require field preservation but lab

preservation may delay analysis.

Page 12 of 12

Documents

1941 Reymet Road l Richmond, Virginia 23237 l Certificate