NCG020096_Tier 1 Report_20230413

AdhkMartin Jay Nivens
Uariettc Regional Manager Environmental Services
East Division
April 12,2023 Submitted FedEx
DEQ Winston Salem Regional Office
Attn:DEMLR Stormwater Program NC Department of
450 West Hanes Mill Road Environmental Quality
Winston Salem,NC 27105 Received
APR 13 2023
RE: Martin Marietta Salem Stone Quarry
NPDES Permit#NCG020096 Winston-Salem
Stormwater Sample Tier 1 Exceedance Report Regional Office
Dear DEMLR Stormwater Program:
This letter is to complete the required sample exceedance notifications as outlined in Part F, Sect. F-7 of the
NPDES permit for our Salem Stone Quarry located at 4572 High Point Road Kernersville,NC. I have attached the
Stormwater Sample Exceedance Report for the first quarter 2023 stormwater sample which resulted in an exceedance
of the Turbidity baseline.
Should you have any questions or need any additional information,please contact me at 704-409-1475 or via e-
mail at [e-mail]
Sincerely,
Charlotte District Office
8701 Red Oak Blvd.Suite 540,Charlotte,NC 28217
t.[phone] m.[phone] [e-mail]
www.martinmarietta.com

Martin
Marietta
Stormwater Sample Exceedance Report
Site: Salem Stone Quarry
Date sample was collected: March 27, 2023
Outfall location: Stormwater Outfall #1
Benchmark Parameter Exceeded:
• Turbidity—84 NTU (Tier l Exceedance for Turbidity benchmark of 50 NTU)
Date of Lab Results: April 4, 2023
Date of Stormwater Management Inspection: April 6, 2023
Personnel in attendance: Ryan Balint—Asst. Plant Manager, Salem Stone Quarry
Barry McConnell—Forman, Salem Stone Quarry
Inspection Observations: Maintenance needed at inlet of basin.
Proposed Actions: Provide maintenance at inlet of basin and upstream to provide better
treatment of stormwater runoff.
Date Actions Implemented: Completed by the end of April 2023.