Table 1 Summary of First-Draw Drinking Water Sample

Table 1Summary of First-Draw Drinking Water Sample Analytical Results

Guilford County SchoolsMendenhall Middle School

Greensboro, North CarolinaH&H Job No. GCS-001

Lead

Cop

per

ppb(1) ppm(2)

MEN-001-002-BP-P 002 4/24/2021 <1.0 0.0281

MEN-001-003-KF-P 003 4/24/2021 <1.0 0.0751

MEN-001-004-KF-P 004 4/24/2021 <1.0 0.0647

MEN-001-005-KF-P 005 4/24/2021 <1.0 0.0604

MEN-001-006-KF-P 006 4/24/2021 6.7 0.240

MEN-001-007-KF-P 007 4/24/2021 <1.0 0.0702

MEN-001-036-IM-P 036 4/24/2021 <1.0 <0.0020

10 1.3

Notes1.) Lead results reported in parts per billion (ppb).2.) Copper results reported in parts per million (ppm).3.) Action threshold established by Guilford County Schools.

Sam

ple

ID

Gui

lford

Cou

nty

Sam

ple

Loca

tion

Cod

e

Sam

plin

g D

ate

Ana

lytic

al M

etho

d

District Action Threshold(3)

200.8

File: M:\AAA-Master Projects\Guilford County Schools (GCS)\Reports\Mendenhall MS\Mendenhall MS Pb and Cu Data TablesMendenhall MS Pb and Cu Data TablesDate: 5/4/2021

Table 1 (Page 1 of 1)

Hart & Hickman, PC

020braising pan

022

023

Hart & Hickman notes: - Only kitchen samples were collected on 4/24/21. Other fixtures were out of service due to COVID-19.

braising pan

Laboratory's liability in any claim relating to analyses performed shall be limited to, at laboratory's option, repeating the analysis in question at laboratory's expense, or the refund of the charges paid for performance of said analysis.

4/30/2021 Hart & Hickman (Charlotte) Christine Schaefer 2923 South Tryon St. Ste 100 Charlotte, NC, 28203 Ref: Analytical Testing

Lab Report Number: 21-118-0008 Client Project Description: Mendenhall Middle Project Number: GCS-001

Dear Christine Schaefer: Waypoint Analytical, LLC (Charlotte) received sample(s) on 4/28/2021 for the analyses presented in the following report. The above referenced project has been analyzed per your instructions. The analyses were performed in accordance with the applicable analytical method. The analytical data has been validated using standard quality control measures performed as required by the analytical method. Quality Assurance, method validations, instrumentation maintenance and calibration for all parameters were performed in accordance with guidelines established by the USEPA (including 40 CFR 136 Method Update Rule May 2012) unless otherwise indicated. Certain parameters (chlorine, pH, dissolved oxygen, sulfite...) are required to be analyzed within 15 minutes of sampling. Usually, but not always, any field parameter analyzed at the laboratory is outside of this holding time. Refer to sample analysis time for confirmation of holding time compliance. The results are shown on the attached Report of Analysis(s). Results for solid matrices are reported on an as-received basis unless otherwise indicated. This report shall not be reproduced except in full and relates only to the samples included in this report. Please do not hesitate to contact me or client services if you have any questions or need additional information. Sincerely,

Angela D Overcash Senior Project Manager

Page 1 of 15

Certification Summary

Laboratory ID: WP CNC: Waypoint Analytical Carolina, Inc. (C), Charlotte, NC

State Program Lab ID Expiration Date

07/31/202137735State ProgramNorth Carolina

12/31/2021402State ProgramNorth Carolina

07/31/202199012State ProgramSouth Carolina

12/31/202099012State ProgramSouth Carolina

Page 1 of 1 00016/21-118-0008

Page 2 of 15

Report Number:

Sample Summary Table

Client Project Description:

21-118-0008

Mendenhall Middle

Lab No Client Sample ID Matrix Date Collected Date Received

04/24/2021 07:45Aqueous 97708 MEN-001-002-BP-P 04/28/2021 10:45

04/24/2021 07:47Aqueous 97709 MEN-001-003-KF-P 04/28/2021 10:45

04/24/2021 07:53Aqueous 97710 MEN-001-004-KF-P 04/28/2021 10:45

04/24/2021 07:56Aqueous 97711 MEN-001-005-KF-P 04/28/2021 10:45

04/24/2021 07:59Aqueous 97712 MEN-001-006-KF-P 04/28/2021 10:45

04/24/2021 08:01Aqueous 97713 MEN-001-007-KF-P 04/28/2021 10:45

04/24/2021 08:03Aqueous 97714 MEN-001-036-IM-P 04/28/2021 10:45

Page 3 of 15

Summary of Detected Analytes

QualifiersAnalyzedUnitsResult

Report Number:

Client Sample ID

Method Parameters

Lab Sample ID

21-118-0008

Report Limit

Project: Mendenhall Middle

V 97708MEN-001-002-BP-P

0.0281 04/29/2021 21:27200.8 Copper mg/L 0.0020

V 97709MEN-001-003-KF-P

0.0751 04/29/2021 21:34200.8 Copper mg/L 0.0020

V 97710MEN-001-004-KF-P

0.0647 04/29/2021 21:40200.8 Copper mg/L 0.0020

V 97711MEN-001-005-KF-P

0.0604 04/29/2021 21:47200.8 Copper mg/L 0.0020

V 97712MEN-001-006-KF-P

0.240 04/29/2021 21:53200.8 Copper mg/L 0.0020

0.0067 04/29/2021 21:53200.8 Lead mg/L 0.0010

V 97713MEN-001-007-KF-P

0.0702 04/29/2021 22:00200.8 Copper mg/L 0.0020

Page 4 of 15

,

REPORT OF ANALYSISReport Number :

Project

Information :

NC 28203

21-118-0008

01102

Hart & Hickman (Charlotte)

2923 South Tryon St. Ste 100

Christine Schaefer

Charlotte

Project ID :

Received : 04/28/2021

Mendenhall Middle

Report Date : 04/30/2021

Sample ID :

Lab No :

Sampled:MEN-001-002-BP-P

97708 Matrix:

4/24/2021 7:45

Aqueous

Test Results Units MQL By AnalyticalMethod

Date / TimeAnalyzed

DF

0.0281 mg/L 0.0020Copper 1 04/29/21 21:27 200.8MMR

<0.0010 mg/L 0.0010Lead 1 04/29/21 21:27 200.8MMR

Qualifiers/Definitions

Limit ExceededLDilution FactorDF

Method Quantitation LimitMQL

Page 5 of 15

,


Project

Information :

NC 28203

21-118-0008

01102



Christine Schaefer

Charlotte

Project ID :

Received : 04/28/2021

Mendenhall Middle


Sample ID :

Lab No :

Sampled:MEN-001-003-KF-P

97709 Matrix:

4/24/2021 7:47

Aqueous


Date / TimeAnalyzed

DF

0.0751 mg/L 0.0020Copper 1 04/29/21 21:34 200.8MMR

<0.0010 mg/L 0.0010Lead 1 04/29/21 21:34 200.8MMR




Page 6 of 15

,


Project

Information :

NC 28203

21-118-0008

01102



Christine Schaefer

Charlotte

Project ID :

Received : 04/28/2021

Mendenhall Middle


Sample ID :

Lab No :


97710 Matrix:

4/24/2021 7:53

Aqueous


Date / TimeAnalyzed

DF

0.0647 mg/L 0.0020Copper 1 04/29/21 21:40 200.8MMR

<0.0010 mg/L 0.0010Lead 1 04/29/21 21:40 200.8MMR




Page 7 of 15

,


Project

Information :

NC 28203

21-118-0008

01102



Christine Schaefer

Charlotte

Project ID :

Received : 04/28/2021

Mendenhall Middle


Sample ID :

Lab No :


97711 Matrix:

4/24/2021 7:56

Aqueous


Date / TimeAnalyzed

DF

0.0604 mg/L 0.0020Copper 1 04/29/21 21:47 200.8MMR

<0.0010 mg/L 0.0010Lead 1 04/29/21 21:47 200.8MMR




Page 8 of 15

,


Project

Information :

NC 28203

21-118-0008

01102



Christine Schaefer

Charlotte

Project ID :

Received : 04/28/2021

Mendenhall Middle


Sample ID :

Lab No :


97712 Matrix:

4/24/2021 7:59

Aqueous


Date / TimeAnalyzed

DF

0.240 mg/L 0.0020Copper 1 04/29/21 21:53 200.8MMR

0.0067 mg/L 0.0010Lead 1 04/29/21 21:53 200.8MMR




Page 9 of 15

,


Project

Information :

NC 28203

21-118-0008

01102



Christine Schaefer

Charlotte

Project ID :

Received : 04/28/2021

Mendenhall Middle


Sample ID :

Lab No :


97713 Matrix:

4/24/2021 8:01

Aqueous


Date / TimeAnalyzed

DF

0.0702 mg/L 0.0020Copper 1 04/29/21 22:00 200.8MMR

<0.0010 mg/L 0.0010Lead 1 04/29/21 22:00 200.8MMR




Page 10 of 15

,


Project

Information :

NC 28203

21-118-0008

01102



Christine Schaefer

Charlotte

Project ID :

Received : 04/28/2021

Mendenhall Middle


Sample ID :

Lab No :

Sampled:MEN-001-036-IM-P

97714 Matrix:

4/24/2021 8:03

Aqueous


Date / TimeAnalyzed

DF

<0.0020 mg/L 0.0020Copper 1 04/29/21 22:06 200.8MMR

<0.0010 mg/L 0.0010Lead 1 04/29/21 22:06 200.8MMR




Page 11 of 15

Quality Control Data

21-118-0008Report No:

Project Description:

Client ID: Hart & Hickman (Charlotte)

Mendenhall Middle

QC Prep Batch Method:

Metals Analyses

200.8

V3737QC Analytical Batch(es):

Analysis Method:

Analysis Description:

200.8 (PREP)

QC Prep: V3672

Associated Lab Samples: 97708, 97709, 97710, 97711, 97712, 97713, 97714

LRB-V3672 Matrix: AQULab Reagent Blank

ParameterAnalyzedMQLBlank

ResultUnits

04/29/21 20:100.0020<0.0020mg/LCopper

04/29/21 20:100.0010<0.0010mg/LLead

LCS-V3672Laboratory Control Sample

ParameterLCS %RecLCS

Result

Spike

Conc.Units% Rec

Limits

1030.1030.100mg/LCopper 85-115

99.00.09940.100mg/LLead 85-115

V 97721-MS-V3672Matrix Spike

MS ResultParameter

Max

RPD

MS

%Rec

MSD

Result

MSD

Spike

Conc.

MS Spike

Conc.ResultUnits%Rec

Limits

0.164 1010.1000.0633mg/LCopper 70-130

V 97703-MS-V3672 V 97703-MSD-V3672Matrix Spike & Matrix Spike Duplicate

MS ResultParameter

Max

RPD

MS

%Rec

MSD

Result

MSD

Spike

Conc.

MS Spike


Limits

MSD

%Rec RPD

0.151 99.00.1500.1000.1000.0516mg/LCopper 98.0 70-130 0.6 20

V 97721-MS-V3672Matrix Spike

MS ResultParameter

Max

RPD

MS

%Rec

MSD

Result

MSD

Spike

Conc.

MS Spike


Limits

0.0982 98.00.100<0.0010mg/LLead 70-130

Page 1 of 2Date: 04/30/2021 02:51 PM

Page 12 of 15

Quality Control Data

21-118-0008Report No:

Project Description:

Client ID: Hart & Hickman (Charlotte)

Mendenhall Middle

QC Prep Batch Method:

Metals Analyses

200.8

V3737QC Analytical Batch(es):

Analysis Method:

Analysis Description:

200.8 (PREP)

QC Prep: V3672

V 97703-MS-V3672 V 97703-MSD-V3672Matrix Spike & Matrix Spike Duplicate

MS ResultParameter

Max

RPD

MS

%Rec

MSD

Result

MSD

Spike

Conc.

MS Spike


Limits

MSD

%Rec RPD

0.0994 98.00.1000.1000.1000.0011mg/LLead 99.0 70-130 0.6 20

Page 2 of 2Date: 04/30/2021 02:51 PM

Page 13 of 15

Fed Ex

UPS

US Postal

Client

Lab

Courier

Other :

Shipment Receipt Form

Customer Number:

Customer Name:

Report Number: 21-118-0008


01102

Shipping Method

Shipping container/cooler uncompromised?

Thermometer ID: IRT-15 4.0C

Chain of Custody (COC) present? Yes No

Yes No Not Present

Yes No Not Present

Yes No

COC agrees with sample label(s)? Yes No

COC properly completed

Samples in proper containers?

Sample containers intact?

Sufficient sample volume for indicated test(s)?

All samples received within holding time?

Cooler temperature in compliance?

Yes No

Yes No

Yes No

Yes No

Yes No

Yes NoCooler/Samples arrived at the laboratory on ice. Samples were considered acceptable as cooling process had begun.

Yes No

Yes No N/A

Yes No N/A

Yes No N/ASoil VOA method 5035 – compliance criteria met

Water - Sample containers properly preserved

Water - VOA vials free of headspace Yes No N/A

Trip Blanks received with VOAs

Low concentration EnCore samplers (48 hr)

High concentration pre-weighed (methanol -14 d) Low conc pre-weighed vials (Sod Bis -14 d)

High concentration container (48 hr)

Custody seals intact on shipping container/cooler?

Custody seals intact on sample bottles?

Number of coolers/boxes received

Yes No

1

Signature: Talon J Yelton Date & Time: 04/28/2021 11:32:05

Special precautions or instructions included?

Comments:

Page 14 of 15

Page 15 of 15

Documents

Table 1 Summary of First-Draw Drinking Water Sample