NCG140001_Cover Letter & Insp Rpt (Signed)_20240409

�, STi17'E t,
ROY COOPER
Governor �' ' 'C�
ELIZABETH S.BISER � ,«_..•«''
Secretary 'w..
WILLIAM E.TOBY VINSON.JR NO,, TH CAROLINA
Interim Directoa Environmental Quality
April 16, 2024
Thomas Concrete of Carolinas, Inc
ATTN: Jason Blyth
3733 National Drive#124
Raleigh, NC 27612
Subject: Compliance Evaluation Inspection
Thomas Concrete of Carolinas-Raleigh Plant
Permit Number: NCG140001
Wake County
Mr. Blyth:
Enclosed please find a copy of the Compliance Evaluation Inspection Report for the inspection
conducted on April 9, 2024.
Should you have any questions concerning this report, please contact me at [phone] or by
email at Thad.Valentine(@ncdenr.gov.
Sincerely,
Thad Valentine
Environmental Senior Specialist
Land Quality Section
Enclosure: Inspection Report
,D-E -y�S North Carolina Department of Environmental Qu�rfity ; Division of Energy,'tineral and Land Resources
`'�` Raleigh Regional Office 1628 Mail Service Center 3800 Barrett Drive I Raleigh.North Carolina 27601)
40011 919.7()L4200

Compliance Inspection Report
Permit:NCG140001 Effective: 08/29/23 Expiration: 06/30/27 Owner: Thomas Concrete of Carolina Inc-Charlotte
SOC: Effective: Expiration: Facility: Thomas Concrete Of Carolina Inc-Raleigh
County: Wake 1131 N W St
Region: Raleigh
Raleigh NC 27603
Contact Person:Justin Hartley Title: Phone:[phone]
Directions to Facility:
System Classifications: SWNC
Primary ORC: Certification: Phone:
Secondary ORC(s):
On-Site Representative(s):
Related Permits:
Inspection Date: 04/09/2024 Entry Time 09:OOAM Exit Time: 10 55AM
Primary Inspector:Thaddeus W Valentine Phone:
Secondary Inspector(s):
Reason for Inspection: Routine Inspection Type: Compliance Evaluation
Permit Inspection Type: Ready Mix Concrete Stormwater/Wastewater Discharge COC
Facility Status: Compliant [] Not Compliant
Question Areas:
Storm Water
(See attachment summary)
Page 1 of 4

Permit: NCG140001 Owner•Facility:Thomas Concrete of Carolina Inc-Charlotte
Inspection Date: 04/09/2024 Inspection Type:Compliance Evaluation Reason for Visit: Routine
Inspection Summary:
Meet with the City of Raleigh (Justin Harcum, Stephen Jeltema)and reviewed stormwater records with Thomas Concrete
personnel (Jason Holland, Daniel Lentz&Eugene)and the consultant from Synterra (David McIntyre)
Stormwater Management Plan
The inspections of the road and sweeping times are being recorded as required.There should be an SOP for how and when
to inspect streets with directions for cars parked on the road and in the way.The SOP should further describe how the street
is swept and what is done with the materials after they are swept. Some of the street sweepings were seen to be swept up
onto the curb and not removed, that shouldn't be done.
All potential pollutants should be identified on the site map including the despencer area and the coolent drum area and any
other area with potential stormwater pollutants.
SOPs for the inspection and cleanup of both storage areas should be developed that details what to look for when assessing
the basins for cleanout and accumulated water removal. Provide detail on how and when pumps are operated.
Provide a detailed SOP for the cleanup and pump down of the washout basin. At what point is it cleaned out and pumped
out.
The pH treatment system SOP should be developed on how to ensure that the system is functioning as intended and the
discharges from that system are performed as required.
Provide a SOP for the inspection and cleanup of the areas around the AST and fuel dispenser. Absorbent pads were noticed
to be completely full of oil and should have been replaced with the cause of the leak identified and fixed.
The wastewater sample should be taken each month from the pH system outlet. Samples should be taken during times
when water is removed form large settling basin, but at least once a month.The annual stormwater sample data for 2023
provides monthly dates for 2022. Pleaase provide the dates in month/day/year as specified so there is no confusion about
the dates. Provide a copy of the DMR(not eDMR data sheet)for each sample event sentto the Raleigh Regional Office.
Waste water samples should be taken at two outlet areas. One sample from the pH treatment system and one from the
smaller basin by the road when it overflows. Please contact Brittany Cook for direction on adding that additional outfall (a
new NOI is not required in this particular instance)
The checklist and inspections look good for the sweeping and the road looked good when we arrived.Work on the SOP's for
teh different tasks.
Site Walk Through
The walk through identified the process for pumping down basin at pH system and taking the sample for WW#1. Discussed
the addition of a WW outfall.Wastewater outfall should be added at retention basin by the road. The additional WW outfall
should be designated WW SDO-03 so the existing oufalls keep their same numbering.
Used oil absorbant was found under despencer that was completely full of oil and should have been cleaned out before that
stage. Fix the leak on the dispenser and develope an SOP for replacing absorbent pads until thafs accomplished.
Coolent drums are on temporary secondary containment. Size requirement of secondary containment should be verified and
drums should be sheltered or covered when not in use. Size requirement for secondary containment is large enough to
contain the single largest tank and the 25 year 24 hour storm event. Include an inspection of the drums and containment to
the inspection checklist with an SOP for removal and disposal of accumulated stormwater if not moved to permanent
Page 2 of 4

Permit: NCG 140001 Owner-Facility:Thomas Concrete of Carolina Inc-Charlotte
Inspection Date: 04/09/2024 Inspection Type:Compliance Evaluation Reason for Visit: Routine
sheltered area or permanent secondary containment.
Page 3 of 4

Permit: NCG140001 Owner-Facility:Thomas Concrete of Carolina Inc-Charlotte
Inspection Date: 04/09/2024 Inspection Type:Compliance Evaluation Reason for Visit: Routine
Stormwater Pollution Prevention Plan Yes No NA NE
Does the site have a Stormwater Pollution Prevention Plan? 0 ❑ ❑ ❑
#Does the Plan include a General Location (USGS)map? 0 ❑ ❑ ❑
#Does the Plan include a"Narrative Description of Practices"? 0 ❑ ❑ ❑
#Does the Plan include a detailed site map including outfall locations and drainage areas? 0 ❑ ❑ ❑
#Does the Plan include a list of significant spills occurring during the past 3 years? 0 ❑ ❑ ❑
#Has the facility evaluated feasible alternatives to current practices? 0 ❑ ❑ ❑
#Does the facility provide all necessary secondary containment? 0 ❑ ❑ ❑
#Does the Plan include a BMP summary? ■ ❑ ❑ ❑
#Does the Plan include a Spill Prevention and Response Plan (SPRP)? E ❑ ❑ ❑
#Does the Plan include a Preventative Maintenance and Good Housekeeping Plan? 0 ❑ ❑ ❑
#Does the facility provide and document Employee Training? 0 ❑ ❑ ❑
#Does the Plan include a list of Responsible Party(s)? 0 ❑ ❑ ❑
#Is the Plan reviewed and updated annually? 0 ❑ ❑ ❑
#Does the Plan include a Stormwater Facility Inspection Program? 0 ❑ ❑ ❑
Has the Stormwater Pollution Prevention Plan been implemented? 0 ❑ ❑ ❑
Comment: Documents were reviewed and found to be in order. We request a few modifications to those
documents and the changes can be found in the summery
Qualitative Monitoring Yes No NA NE
Has the facility conducted its Qualitative Monitoring? N ❑ ❑ ❑
Comment: Okav
Analytical Monitoring Yes No NA NE
Has the facility conducted its Analytical monitoring? No ❑ ❑
#Has the facility conducted its Analytical monitoring from Vehicle Maintenance areas? ❑ ❑ 0 ❑
Comment: Analytical data indicates there are multiple and continuous exceedances for TSS in wastewater
outfall SDO-1 in 2021 2022 &2023 with exceedance in pH and TSS for the March sample of
2024. The annual report sent for the 2023 sample data shows only the month and year for
2022. Additional directions provided in summery,
Permit and Outfalls
Yes No NA NE
#Is a copy of the Permit and the Certificate of Coverage available at the site? E ❑ ❑ ❑
#Were all outfalls observed during the inspection? 0000
#If the facility has representative outfall status, is it properly documented by the Division? ❑ ❑ N ❑
#Has the facility evaluated all illicit(non stormwater)discharges? 0000
Comment: Outfall SDO-01 wastewater and SDO-02 stormwater were viewed. There is another wastewater
out fall not sampled. Additional direction in summery
Page 4 of 4