NC0021211_Chemical Addendum_20220104

CITY
G
I
January 3, 2022
OF I
R A H A M
IVIr. IVlichael Montebello
N .C. Department of Environmental Quality
Division of Water Resources
Water Quality Permitting - NPDES
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
NON 11.1 C AROI INA I
Re: City of Graham
Graham WWTP
NPDES Permit Renewal — Chemical Addendum
Permit No. NC0021211
Dear Mr. Montebello:
As a supplement to the Graham Wastewater Treatment Plant NPDES Application package that is
currently under review, the City of Graham is submitting additional information per Session Law
2018-5, Senate Bill 99, Section 13.1(r). At the request of the Division of Environmental Quality
(DEQ), the City conducted additional WWTP influent sampling in July, August, and September
2019 for 1,4-Dioxane. This analysis was done in accordance with EPA IVlethod 624.1 which is a
certified method in 40 CFR Part 136. Accordingly, the City is providing a Chemical Addendum to
the NPDES Application for the 1,4 Dioxane influent sampling results.
Additionally, at the request of DEQ, the City performed WWTP influent sampling for a series of
P FOA/PFAS analytes in July, August, and September 2019. This sampling is not certified by the
City as there is not a 40 CFR Part 136 certified analysis method for these analytes. This data was
previously provided to DEQ following the three sampling events in 2019. Although this data is not
being certified by the City and was already provided to DEQ, we are providing a summary of the
results as an attachment to this for clarity.
The following three attachments are being provided as a supplement to the Graham VVWTP
N PDES Permit Application.
Attachment 1: Chemical Addendum to NPDES Application
O Attachment 2: Lab Reports from 1,4 Dioxane Sampling Results
© Attachment 3: Uncertified Emerging Compound Sampling Data Summary
Please let us know if you have any questions on the information provided.
Respectfully,
114a''W
Tonya'A. Mann
Utilities Director

EPA Identification Number
NPDES Number
Facility Name
Outfall Number
FRS ID: 110000761890
Pollutant (Required)
NC 0021211
Method Number (if
CAS number Applicable)
City of Graham WWTP
001
Reason Pollutant Believed Present in Discharge
Estimated Concentration (If
Known)
1,4 Dioxane
123-91-1
EPA 624.1
Influent sampling results (July, August, and September 2019)
Median of three influent
sampling events (July, August,
and September 2019) was
1.59 pg/L

Meritech, Inc.
Environmental Laboratory
Laboratory Certification No. 165
Contact: Shelby Smith
Client: Graham, City of
P.O. Drawer 357
Graham, NC 27253
Report Date: 7/25/2019
NPDES #: NC0021211
Date Sample Rcvd: 7/15/2019
Meritech Work Order # 07151915
Parameters
1,4 Dioxane + Trip Blank
Results
Attached
Sample: Plt. Influent Grab
Analysis Date
7/17/19
Remitting Limit
7/15/19
Method
EPA 624.1
I hereby certify that I have reviewed and approve these data.
Lan)
0
esentative
642 Tamco Road, Reidsville, North Carolina 27320
tel.[phone] fax.[phone]

Client:
Project:
Client Sample ID:
Sample Collection:
MERITECH, INC.
Environmental Laboratories
Laboratory Certification #165
City of Graham W W TP
1,4 Dioxane
Plt. Influent
07/15/19
Meritech ID#:
Analysis:
Analyst:
Dilution Factor:
Report Date:
EPA 624.1 VOLATILE ORGANICS
Parameter
1,4-Dioxane (p-Dioxane)
Trip Blank
Batch Blank = Below Reporting Limit
Internal Standards method criteria acceptable
Surrogate Recoveries
Toluene-d8
Bromofluorobenzene
Spike Cone
30 ug/L
30 ug/L
* - If "no" is selected, see second page for details.
I hereby certify that I have reviewed and approve these data.
Result
3.29 ug/L
< 1.00 ug/L
(Yes)/No
(Yes) / No
Spike Recovery
98%
95%
07151915
07/17/19
VWV
1
07/19/19
Limits
67-151%
45-161%
642 Tamco Road * Reidsville, NC 27320
[phone] * [e-mail]

8/9/18 Chain of Custody Record (COC)
NPDES#:
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ITECH, INC.
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Meritech, Inc.
Environmental Laboratory
Laboratory Certification No. 165
Contact: Shelby Smith
Client: Graham, City of
P.O. Drawer 357
Graham, NC 27253
Report Date: 8/23/2019
NPDES #: NC0021211
Date Sample Rcvd: 8/19/2019
Meritech Work Order # 08191910
Parameters
1,4 Dioxane + Trip Blank
Results
Attached
Sample: Plt. Influent Grab
Analysis Date
8/19/19
Reporting Limit
8/19/19
Method
EPA 624.1
I hereby certify that I have reviewed and approve these data.
Laboratory epresentative
642 Tamco Road, Reidsville, North Carolina 27320
tel.[phone] fax.[phone]

Client:
Project:
Client Sample ID:
Sample Collection:
MERI TECH, INC.
Environmental Laboratories
Laboratory Certification #165
City of Graham WWTP
1,4-Dioxane
Pit. Influent
08/19/19
Meritech ID#:
Analysis:
Analyst:
Dilution Factor:
Report Date:
EPA 624.1 VOLATILE ORGANICS
Parameter
1,4-Dioxane (p-Dioxane)
Trip Blank
Batch Blank = Below Reporting Limit
Internal Standards method criteria acceptable
Surrogate Recoveries
Toluene-d8
Bromofluorobenzene
Spike Cone
30 ug/L
30 ug/L
* - If "no" is selected, see second page for details.
I hereby certify that I have reviewed and approve these data.
Result
1.18 ug/L
< 1.00 ug/L
(Yes) / No
(Yes) / No
08191910
08/19/19
VWV
l
08/20/19
Spike Recovery Limits
104%
101%
67-151%
45-161%
a.S1 atory Rep P ative
642 Tamco Road * Reidsville, NC 27320
[phone] * [e-mail]

8/9(18 Chain of Custody RecoMERrd ((COC)
NPDES#:
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Meritech, Inc.
Environmental Laboratory
Laboratory Certification No. 165
Contact: Shelby Smith
Client: Graham, City of
P.O. Drawer 357
Graham, NC 27253
Report Date: 9/25/2019
NPDES #: NC0021211
Date Sample Rcvd: 9/17/2019
Meritech Work Order # 09171916
Parameters
1,4 Dioxane + Trip Blank
Results
Attached
Sample: Plt. Influent Grab
Analysis Date
9/18/19
Renorting Limit
9/16/19
Method
EPA 624.1
I hereby certify that I have reviewed and approve these data.
Lab • ratory Repre entative
642 Tamco Road, Reidsville, North Carolina 27320
tel.[phone] fax.[phone]

Client:
Project:
Client Sample ID:
Sample Collection:
MERITECH, INC.
Environmental Laboratories
Laboratory Certification #165
City of Graham WWTP
1,4 Dioxane
Plt. Influent
09/16/19
Meritech ID#:
Analysis:
Analyst:
Dilution Factor:
Report Date:
EPA 624.1 VOLATILE ORGANICS
Parameter
1,4-Dioxane (p-Dioxane)
Trip Blank
Batch Blank = Below Reporting Limit
Internal Standards method criteria acceptable
Surrogate Recoveries
Toluene-d8
Bromofluorobenzene
Spike Cone
30 ug/L
30 ug/L
* - If "no" is selected, see second page for details.
I hereby certify that I have reviewed and approve these data.
Result
1.59 ug/L
< 1.00 ug/L
(Yes) / No
(Yes) / No
09171916
09/18/19
VWV
1
09/23/19
Spike Recovery Limits
104%
96%
67-151%
45-161%
642 Tamco Road * Reidsville, NC 27320
[phone] * [e-mail]

8/9/18 Chain of Custody Record
(COC)
NPDES#:
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Address:
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Email: [e-mail]
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Compositor #
Shipment
UPS
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Enter data ONLY in blue cells!
POTW Name:
City of Graham
INPDES#:
I NC0021211 I
Influent Grab (ng/L)
CAS Number
Analyte Name
Acronym
7/23/2019
*
8/22/2019
*
9/18/2019
335-67-1
Perfluorooctanoic acid
PFOA
6.5
8.97
8.37
1763-23-1
Perfluorooctanesulfonic acid
PFOS
ND
U
12.8
9.59
375-22-4
Perfluorobutanoic acid
PFBA
ND
U
ND
U
ND
U
375-73-5
Perfluorobutanesulfonic acid
PFBS
ND
U
ND
U
ND
U
335-77-3
Perfluorodecanesulfonic acid
PFDS
ND
U
ND
U
ND
U
335-76-2
Perfluorodecanoic acid
PFDA
1.25
1.44
2.14
307-55-1
Perfluorododecanoic acid
PFDoA
ND
U
0.726
J,B
ND
U
375-92-8
Perfluoroheptanesulfonic acid
PFHpS
ND
U
ND
U
ND
U
375-85-9
Perfluoroheptanoic acid
PFHpA
ND
U
4.28
ND
U
355-46-4
Perfluorohexanesulfonic acid
PFHxS
ND
U
0.144
J,B
ND
U
307-24-4
Perfluorohexanoic acid
PFHxA
ND
U
11.8
0.822
68259-12-1
Perfluorononanesulfonic acid
PFNS
ND
U
ND
U
ND
U
375-95-1
Perfluorononanoic acid
PFNA
1.77
1.62
2.46
754-91-6
Perfluorooctanesulfonamide
PFOSA
ND
U
ND
U
ND
U
2991-50-6
2-(N-Ethylperfluorooctanesulfonamido) acetic acid
N-EtFOSAA
ND
U
ND
U
ND
U
2355-31-9
2-(N-Methylperfluorooctanesulfonamido) acetic acid
N-MeFOSAA
ND
U
ND
U
ND
U
2706-91-4
Perfluoropentanesulfonic acid
PFPeS
ND
U
ND
U
ND
U
2706-90-3
Perfluoropentanoic acid
PFPeA
65.6
ND
U
ND
U
376-06-7
Perfluorotetradecanoic acid
PFTeA
NR
NR
2.82
B
ND
U
72629-94-8
Perfluorotridecanoic acid
PFTriA
ND
U
2.02
B
0.776
2058-94-8
Perfluoroundecanoic acid
PFUnA
ND
U
ND
U
ND
U
757124-72-4
4:2 fluorotelomer sulfonic acid
4:2 FTS
ND
U
ND
U
ND
U
27619-97-2
6:2 fluorotelomer sulfonic acid
6:2 FTS
3.19
1.33
B
1.48
39108-34-4
8:2 fluorotelomer sulfonic acid
8:2 FTS
0.769
0.354
J,B
ND
U
62037-80-3
2,3,3,3-Tetrafluoro-(1,1,2,2,3,3,3-heptafluoropropoxy)-propanoicacid(Gen-X)
HFPO-DA
ND
U
ND
U
ND
U
ENTER OTHER PARAMETERS TESTED
_
Sum of PFOA and PFOS
6.5
21.77
17.96
Total
79.079
48.304
25.638
Influent Grab (ug/L)
7/15/2019
8/19/2019
9/16/2019
1, 4 - Dioxane
3.29
1.18
1.59
* Please enter applicable lab qualifiers