NC0024872_Pretreatment_Compliance_Inspection_20241028

Docusign Envelope ID: 03E4D73D-60AB-49D7-9E98-CECB19943E4B
ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
RICHARD E. ROGERS, JR. NORTH CAROLINA
Director Environmental Quality
10/28/2024
Via Electronic Mail (mweir(cr�,daviecoun nc. og_v)
Mr. Michael C. Weir
Water Resources Superintendent
Davie County Public Utilities
728 Sparks Rd.
Mocksville, NC 27028
Subject: Pretreatment Compliance Inspection
Program: Davie County Public Utilities
Wastewater Treatment Plant: Cooleemee WWTP
NPDES #: NC0024872, Davie County
Dear Mr. Weir:
Enclosed is a copy of the Pretreatment Compliance Inspection (PCI) Report for the inspection of the Davie County
Public Utilities' industrial pretreatment program on September 30, 2024, by Mr. Keyes McGee of the Division's
Central Office.
Background
Davie County Public Utilities presently has 1 Significant Industrial User (SIU) discharging effluent to
the Cooleemee Wastewater Treatment Plant. The Town of Mocksville will soon be discharging to the
Cooleemee WWTP, and will become the 2ml SIU for Davie County Utilities,
Publicly Owned Treatment Works (POTW) Interview
Discussions with Mr. Michael Weir (Water Resources Superintendent), Johnny Lambert (Utilities
Director) and Tim Smith (ORC) indicate the POTW adequately maintains the county's pretreatment
program and is preparing to soon add Mocksville as its second SIU.
Pretreatment Program Elements Review
The most recent Headworks Analysis (HWA) was submitted to the Division on September 28, 2021,
and is awaiting Division review.
The Industrial Waste Survey (IWS) was approved August 25, 2020.
The Sewer Use Ordinance (SUO) was approved on December 30, 2013.
The Enforcement Response Plan (ERP) was approved September 02, 2020.
The Long Term Monitoring Plan (LIMP) was approved March 28, 2018.
D E Q �J North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 1 1611 Mail Service Center I Raleigh, North Carolina 27699-1611
NORTH C of Envi A a 919.707.9000
Deparlmem of Envlronmenml Duali�

Docusign Envelope ID: 03E4D73D-60AB-49D7-9E98-CECB19943E4B
STMP File Review Findings
The POTW is sampling as per the approved STMP at the appropriate PQLs.
Industrial User Permit (IUP) File Review
File review for Ingersol Rand (0004), indicates well organized records and data. The SIUs was not in
SNC for the last complete 6-month reporting period.
No Action Items Necessary for the Pretreatment Program
Final Comments
Davie County's industrial pretreatment program is satisfactory. The POTW administrates an adequate
pretreatment program.
Please inform all of the control authority's staff of our findings by forwarding a copy of this letter and the enclosed
report.
The report should be self-explanatory; however, should you have any questions, please do not hesitate to contact
Mr. McGee at [phone], email: ke. e�geekdeq.nc.gov.
tkm/davie county_pci_2024
Enclosure: 09/30/2024 Inspection Report
Ec: Municipal Unit File
Jenny Graznak, WSRO
Central Files (Laserfiche)
Sincerely,
Signed by:
E
in
...
Karen Preston, NPDES Permitting Supervisor
Division of Water Resources
D E Q � North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11611 Mail Service Center I Raleigh, North Carolina 27699-1611
NORTH CAROLINA 919.707.9000
Depa"mem of Environmental Duality

Docusign Envelope ID: 03E4D73D-60AB-49D7-9E98-CECB19943E4B
NORTH CAROLINA DIVISION OF WATER RESOURCES
. PRETREATMENT COMPLIANCE INSPECTION (PCI) REPORT
Water Resources
ENVIRONMENTAL QUALITY
BACKGROUND INFORMATION [Complete Prior To PCI; Review Program Info Database Sheet(s)]
1. Control Authority (POTW) Name: Davie County
2. Control Authority Representative(s): Michael Weir, Johnny Lambert, Tim Smith
3. Title(s): _Water Resources Superintendent; Utilities Director; Operator in Responsible Charge
4. Last Inspection Date: 06/27/2023 Inspection Type (Check One): ® PCI ❑ Audit
5. Has Program Completed All Requirements from the Previous Inspection and Program Info Sheet(s)? ® YES ❑ NO
6. Is POTW under an Order That Includes Pretreatment Conditions? ❑ YES ® NO
Order Type, Number, Parameters:
ICIS CODING
Main Program Permit Number
I NICI0 Io 12 14 Ig 17 12 l
N/A
MM/DD/YY
109130124 1
Are Milestone Dates Being Met? ❑ YES ❑ NO
7. Current Number Of Significant Industrial Users (SIUs)?
1
8. Number of SIUs With No IUP, or With an Expired IUP?
0
9. Number of SIUs Not Inspected By POTW in the Last Calendar Year?
0
10. Number of SIUs Not Sampled By POTW in the Last Calendar Year?
0
11. Number of SIUs In SNC For Limits Violations During Either of the Last 2 Semi -Annual
Periods?
0
12. Number of SIUs in SNC For Reporting During Either of the Last 2 Semi -Annual Periods?
0
13. Number of SIUs in SNC with Pretreatment Schedule?
0
14. Number of SIUs on Schedules?
0
15. Current Number Of Categorical Industrial Users CIUs ?
0
16. Number of CIUs in SNC? 11
N/A
POTW INTERVIEW
17. Since the Last PCI, has the POTW had any NPDES Limits Violations?
If Yes, What are the Parameters and How are these Problems Being Addressed?
18. Since the Last PCI, has the POTW had any Problems Related to an Industrial
Discharge (Interference, Pass -Through, Blockage, Citizens' Complaints, Increased
Sludge Production, Etc.)?
If Yes, How are these Problems Being Addressed?
19. Which Industries have been in SNC for Limits or Reporting during SNC for
either of the Last 2 Semi -Annual Periods? Not Been Published for SNC for
Public Notice?(May refer to PAR if Excessive SIUs in SNC) Not Pul
20. Which Industries are on Compliance Schedules or Orders? For all SIUs on an
Order, Has a Signed Copy of the Order been sent to the Division?
21. Are Any Permits or Civil Penalties Currently Under Adjudication? If Yes, Which
Ones?
❑YES ®NO
No violations this year
❑ YES ®NO
Limits: N/A
Reporting: N/A
1lished: N/A
F7---
DYES ® NO
LTMP/STMP FILE REVIEW:
22. Is LTMP/STMP Monitoring Being Conducted at Appropriate Locations and Frequencies? ® YES ❑ NO ®N/A
23. Are Correct Detection Levels being used for all LTMP/STMP Monitoring? ® YES ❑ NO
24. Is LTMP/STMP Data Maintained in a Table or Equivalent? EYES ❑ NO Is Table Adequate? ®YES ❑ NO
25. All LTMP/STMP effluent data reported on Discharge Monitoring Report? ® YES ❑ NO Division Inspector, please verify
yourself!
26. If NO to 23 - 26, list violations
27. Should any Pollutants of Concern be Eliminated from or Added to LTMP/STMP?
If yes, which ones? Eliminated: N/A Added:
NC DWR Pretreatment Compliance Inspection (PCI) Form Updated October 2024
❑YES ®NO
N/A
Page 1

Docusign Envelope ID: 03E4D73D-60AB-49D7-9E98-CECB19943E4B
28. PRETREATMENT PROGRAM ELEMENTS REVIEW— Please review POTW files, verify POTW has copy of Program Element in
their files, complete with supporting documents and copy of PERCS Approval Letter, and dates consistent with Program Info:
Program Element
Last Submittal
Date In file?
Last Approval
Date In isle
Date Next Due,
If Applicable
Headworks Analysis A
09/28/2021
® Yes ❑ No
N/A
❑ Yes ❑ No
TBD
Industrial Waste Survey IWS
05/29/2020
® Yes ❑ No
08/25/2020
® Yes ❑ No
06/17/2027
Sewer Use Ordinance SUO
10/23/2013
® Yes ❑ No
12/30/2013
® Yes ❑ No
Enforcement Response Plan ERP
06/02/2013
® Yes ❑ No
09/02/2020
® Yes ❑ No
Long Term Monitoring Plan (LTMP)
1 03/12/2018
® Yes ❑ No
03/28/2018
® Yes ❑ No
INDUSTRIAL USER PERMIT (IUP) FILE REVIEW (3 IUP FILE REVIEWS OR 1 FILE REVIEW AND 1 IU INSPECTION)
29. User Name
1. Ingersol Rand
2.
3.
30. IUP Number
004
31. Does File Contain Current Permit?
® Yes ❑
I ❑ Yes ❑ No
I ❑ Yes ❑ No
32. Permit Expiration Date
1 01/01/2025
33. Categorical Standard Applied I.E. 40 CFR, Etc. Or N/A
I N/A
34. Does File Contain Permit Application Completed Within One Year Prior
® Yes ❑ No
❑ Yes ❑ No
❑ Yes ❑ No
to Permit Issue Date?
35. Does File Contain an Inspection Completed Within Last Calendar Year?
I ❑ Yes ® No
❑ Yes ❑ No
❑ Yes ❑ No
36. a. Does the File Contain a Slug/Spill Control Plan?
a. ®Yes ❑No
a. ❑Yes ❑N7-1
o
a. ❑Yes ❑No
b. If No, is One Needed? See Inspection Form from POTW
b.❑Yes❑No®N/A
b. El es ❑No I
b. ❑Yes ❑No
37. For 40 CFR 413 and 433 TTO Certification, Does File Contain a Toxic
❑Yes❑No®N/A
❑Yes❑No❑N/A
❑Yes❑No❑N/A
Organic Management Plan (TOMP)?
38. a. Does File Contain Original Permit Review Letter from the Division?
a. ❑Yes ®No
I
a. ❑Yes ❑No
a. ❑Yes ❑No
b. All Issues Resolved?
b.❑Yes❑NOON/A
b.❑Yes❑No❑N/A
b.❑Yes❑No❑N/A
39. During the Most Recent Semi -Annual Period, Did the POTW Complete
® Yes ❑ No
F
❑ Yes ❑ No
❑ Yes ❑ No
1
its Sampling as Required b IUP, includingflow?
40. Does File Contain POTW Sampling Chain -Of -Custody Forms?
® Yes ❑ =1
❑ Yes ❑ No 11
❑ Yes ❑ No
41. During the Most Recent Semi -Annual Period, Did the SIU Complete its
®Yes❑No❑N/A
❑Yes❑No❑N/A
❑Yes❑No❑N/A
Sampling as Required b IUP, includingflow?
41b. During the Most Recent Semi -Annual Period, Did SIU submit all reports
®Yes❑No❑N/A
❑Yes❑No❑N/A
❑Yes❑No❑N/A
on time?
42a. For categorical IUs with Combined Wastestream Formula (CWF), does
❑Yes❑No®N/A
❑Yes❑No❑N/A
❑Yes❑No❑N/A
file include process/dilution flows as Required b IUP?
42b. For categorical IUs with Production based limits, does file include
❑Yes❑NoON/A
P YesE]NoE]N/A
❑Yes❑No❑N/A
production rates and/or flows as Required by IUP?
43a. During the Most Recent Semi -Annual Period, Did the POTW Identify
® Yes ❑ No
❑ Yes ❑ No
❑ Yes ❑ No
All Limits Non -Compliance from Both POTW and SIU Sampling?
43b. During the Most Recent Semi -Annual Period, Did the POTW Identify
❑Yes❑No®N/A
❑Yes❑No❑N/A
❑Yes❑No❑N/A
All Re ortin Non -Compliance from SIU Sampling?
44. a. Was the POTW Notified by SIU (Within 24 Hours) of All Self-
a.❑Yes❑NOON/A
a.❑Yes❑No❑N/A
a.❑Yes❑No❑N/A
Monitoring Violations?
b. Did Industry Resample and submit results to POTW Within 30 Days?
b.❑Yes❑No®N/A
b.❑ Yes❑No❑N/A
b.❑Yes❑No❑N/A
c. If applicable, Did POTW resample within 30 days of becoming aware
c.❑Yes❑No®N/A
of SIU limit violations in the POTW's sampling of the SIU?
c.❑Yes❑No ❑N/A
c.❑Yes❑No ❑N/A
46. During the Most Recent Semi -Annual Period, Was the SIU in SNC?
❑ Yes ® No 11
❑ Yes ❑ No
I ❑ Yes ❑ No
47. During the Most Recent Semi -Annual Period, Was Enforcement Taken
❑Yes❑No1Z
❑Yes❑No❑N/A
❑Yes❑No❑N/A
as Specified in the POTW's ERP (NOVs, Penalties, timing, etc.)?
48. Does the File Contain Penalty Assessment Notices?
❑Yes❑NoON/A
❑Yes❑No❑N/A 11
❑Yes❑No❑N/A
49. Does The File Contain Proof Of Penalty Collection?
❑Yes❑No®N/A
❑Yes❑No❑N/A 11
❑Yes❑No❑N/A
50. a. Does the File Contain Any Current Enforcement Orders?
a.❑Yes❑No®N/A
a.❑Yes❑No❑N/A
a.❑Yes❑No❑N/A
[b.E:]YesE]NoE]N/A
b. Is SIU in Compliance with Order?
b.❑Yes❑No®N/A
b.❑Yes❑No❑N/A
51. Did the POTW Representative Have Difficulty in Obtaining Any of This
❑ Yes ® No
❑ Yes ❑ No
❑Yes ❑ No
Requested Information For You?
FILE REVIEW COMMENTS:
NC DWR Pretreatment Compliance Inspection (PCI) Form Updated October 2024 Page 2

Docusign Envelope ID: 03E4D73D-60AB-49D7-9E98-CECB19943E4B
Hazen and Sawyer will update the monitoring plan soon — this will be determined when the initial sampling is completed on the
Mocksville Force Main.
The Division apparently overlooked doing a review of the 01/01/2021 Ingersol Rand IUP — there is no record of this review in the
Division's files.
Ingersol Rand was inspected by BOTH Davie County and Mocksville on 10/11/2024 (after this PCI).
INDUSTRY INSPECTION ICIS CODING:
Main Program Permit Number
1. Industry Inspected:
2. Industry Address:
3. Type of Industry/Product:
4. Industry Contact:
Phone:
MM/DD/YY N/A For Industry Inspection
NO INDUSTRIAL INSPECTION REQUIRED
Fax:
Title:
5. Does the POTW Use the Division Model Inspection Form or Equivalent? ❑ YES ❑ NO
6. Did the POTW Contact Conduct the Following Parts of the Industrial Inspection Thoroughly?
Comments:
A. Initial Interview ❑ YES ❑ NO
B. Plant Tour ❑ YES ❑ NO
C. Pretreatment Tour ❑ YES ❑ NO
D. Sampling Review ❑ YES ❑ NO
E. Exit Interview ❑ YES ❑ NO
Industrial Inspection Comments:
N/A For Industry Inspection
OVERALL SUMMARY AND COMMENTS:
Comments: Davie County has a well -organized pretreatment program capable of taking industrial flow from the Town of Mocksville.
Requirements
None
Recommendations: None
NOD: ❑ YES ® NO
NOV: ❑ YES ® NO
QNCR: ❑ YES ® NO
POTW Rating:
Satisfactory_-) es Marginal N/A UnSatisfactory N/A
PCI COMPLETED BY: Keyes McGee DATE:09/30/2024
NC DWR Pretreatment Compliance Inspection (PCI) Form Updated October 2024 Page 3