NCG020081_Tier I_20240125

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Materials Company
Via email
January 25, 2024
Tamera Eplin, PE
Regional Engineer, Land Quality Section
NCDEQ Winston Salem Regional Office
450 West Hanes Mill Road,Suite 300
Winston-Salem, NC 27105
RE: Vulcan Materials Company—Smith Grove Quarry
COC No. NCG020081
Stormwater Outfall 003
Ms. Eplin:
In accordance with General Permit NO. NCG020000 Vulcan Materials Company, LLC(Vulcan) is
submitting notification within the two weeks of receipt (January 22, 2024) of analytical results indicating
an exceedance of a benchmark value as outlined in Part F Table 2 and Section F-5. In this case our
Outfall 003 turbidity analysis indicated a result of 84.2 NTLI.
Vulcan is in the process of implementing the Tier One response requirements for turbidity exceedance,
as detailed in Part F,Table 5 of General Permit No. NCG020000. On January 24, 2024, Chandler Wooten
of Vulcan and I attempted to identify and evaluate the possible causes of the benchmark exceedance
from the sample taken on January 9, 2024. From this evaluation,we believe that the source of the
higher turbidity may have been the result of material build up within the basin area. Vulcan will
schedule the basin to be maintained by removing accumulated leaf litter, debris, and sediment and
adding clean filter stone to the spillway.The facility plans to take another sample during the next
qualified storm event to assess the effectiveness of our corrective actions.
Documentation of all responses and corrective actions performed in accordance with the Tier One
requirements for turbidity will be maintained with the facility's Stormwater Pollution Prevention Plan.
If you have any questions about the above information, please contact Bert Bond, Plant Supervisor at
336-835-1439 or me at 704-547-7076.
Sincerely,
Tony Johnson
Environmental Engineer
cc: Bert Bond
CHARLOTTE REGIONAL OFFICE—VULCAN CONSTRUCTION MATERIALS, L.L.C.
11020 David Taylor Drive,SUITE 400,CHARLOTTE, NC 28262,TELEPHONE [phone], FAX [phone]