NCG020070_Compliance Evaluation Inspection_20260210

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JOSH STEIN
Governor
D.REID WILSON
Secretary xu
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WILLIAM E.TOBY VINSON,JR. NORTH CAROLINA
Director Environmental Quality
February 10,2026
Martin Martietta Materials Inc.
Attention: Ronald F.Kopplin,PE,President
2235 Gateway Access Pointe, Suite 400
Raleigh,North Carolina 27607
Subject: COMPLIANCE EVALUATION INSPECTION
NPDES Stormwater General Permit NCG020000
Martin Martietta Materials Inc.
Bakers Quarry,Certificate of Coverage NCG020070
Union County
Dear Permittee:
On January 15, 2026, a site inspection was conducted for the Bakers Quarry facility located at 2111 Rocky
River Road, Union County,North Carolina. A copy of the Compliance Inspection Report is enclosed for your
review. The site visit and file review revealed that the subject facility is covered by NPDES Stormwater
General Permit NCG020000 under Certificate of Coverage NCG020070. Permit coverage authorizes the
discharge of stormwater from the facility to receiving waters designated as Dry Creek, class C waters in the
Yadkin-PeeDee River Basin.
As a result of the inspection, the facility was found to be compliant with the conditions of the NCG020000
permit. Please refer to the enclosed Compliance Inspection Report for additional comments and observations
made during the inspection.
Please be advised that violations of the NPDES Stormwater General Permit are subject to a civil
penalty assessment of up to $25,000 per day for each violation. If you or your staff have.any questions,
comments, or needs assistance with understanding any aspect of your permit, please contact me at
[phone] or via e-mail at [e-mail].
Sincerely,
- DocuSigned by: -
4A36D6B02BO2438...
Jerry W.Eplin,PE
Regional Engineer
DEMLR
Enclosure: Compliance Inspection Report
c: Jay Nivens,Martin Marietta Materials,Inc., 8701 Red Oak Boulevard, Suite 540,Charlotte,NC 28217
DEMLR NPDES Stormwater Permit Laserfiche File
North Carolina Department of Environmental Quality I Division of Energy,Mineral,and Land Resources
D E Q� Mooresville Regional Office 610 East Center Avenue,Suite 301 Mooresville,North Carolina 28115
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704-235-2100

Compliance Inspection Report
Permit:NCG020070 Effective: 07/01/25 Expiration: 06/30/30 Owner: Martin Marietta Materials Inc
SOC: Effective: Expiration: Facility:Martin Marietta-Bakers
County: Union 2111 Rocky River Rd
Region: Mooresville
Monroe NC 28110
Contact Person:Jay Nivens Title: Phone:[phone]
Directions to Facility:
System Classifications: SWNC,
Primary ORC: Certification: Phone:
Secondary ORC(s):
On-Site Representative(s):
Related Permits:
Inspection Date: 01/15/2026 : Entry Time 10:OOAM Exit Time: 10:45AM
Primary Inspector:Lily C Kay Phone: [phone]
Secondary Inspector(s):
Reason for Inspection: Routine Inspection Type:Compliance Evaluation
Permit Inspection Type: Mining Activities Stormwater Discharge COC
Facility Status: Compliant ❑ Not Compliant
Question Areas:
Storm Water
(See attachment summary)
Page 1 of 3

Permit: NCG020070 Owner-Facility:Martin Marietta Materials Inc
Inspection Date: 01/15/2026 Inspection Type:Compliance Evaluation Reason for Visit: Routine
Inspection Summary:
The Stormwater Pollution Prevention Plan (SWPPP)and related documentation were complete including the annual
certification and employee training records, and inspection records. The only outlet for the facility is at the tailings pond and
that water is recycled throughout a plant. Therefore,there is no discharge. All secondary containment and maintenance
areas were in good condition and no issues were observed at the facility. If you have questions, contact me at
[e-mail] or by phone at(704)235-2137.
Page 2 of 3

Permit: NCG020070 Owner-Facility:Martin Marietta Materials Inc
Inspection Date: 01/15/2026 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? ❑ ❑ ❑
#Does the Plan include a General Location(USGS)map? ❑ ❑ ❑
#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? ❑ ❑ ❑
#Has the facility evaluated feasible alternatives to current practices? ❑ ❑ ❑
#Does the facility provide all necessary secondary containment? N ❑ ❑ ❑
#Does the Plan include a BMP summary? E ❑ ❑ ❑
#Does the Plan include a Spill Prevention and Response Plan(SPRP)? 0 ❑ ❑ ❑
#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? E ❑ ❑ ❑
Comment: The Stormwater Pollution Prevention Plan (SW PP)and related documentation were complete
including the annual certification and employee training records,and inspection records. The
release valves for secondary containments are scheduled to be replaced, and the valves were
on site.
Qualitative Monitoring Yes No NA NE
Has the facility conducted its Qualitative Monitoring? ❑ ❑ ❑
Comment:
Analytical Monitoring
Yes No NA NE
Has the facility conducted its Analytical monitoring? ❑ ❑ ❑ ❑
#Has the facility conducted its Analytical monitoring from Vehicle Maintenance areas? ❑ ❑ ❑ ❑
Comment: The only outlet for the facility is at the tailings pond and that water is recycled throughout a
plant. Therefore, there is no discharge.
Permit and Outfalls Yes No NA NE
#Is a copy of the Permit and the Certificate of Coverage available at the site? 0 ❑ ❑ ❑
#Were all outfalls observed during the inspection? ❑ ❑ ❑
#If the facility has representative outfall status, is it properly documented by the Division? ❑ ❑ N ❑
#Has the facility evaluated all illicit(non stormwater)discharges? ❑ ❑ 0 ❑
Comment:
Page 3 of 3