NCG160242_2023 DMR_20230421

NCDEQ Division of Energy, Mineral and Land Resources
Stormwater Discharge Monitoring Report(DMR) Form for NCG160000
Asphalt Paving Mixtures and Blocks
Click here for instructions
Complete,sign,scan and submit the DMR via the Stormwater NPDES Permit Data Monitoring Report(DMR) Upload form within
I
30 days of receiving sampling results. Mail the original,signed hard copy of the DMR to the appropriate DEMLR Regional Office.
Certificate of Coverage No. NCG160242 Person Collecting Samples: Nicholas Murphrey
Facility Name:Carolina Sunrock- North Raleigh Asphalt Laboratory Name:Eurofins
Facility County:Wake Laboratory Cert. No.:269
Discharge during this period:El Yes 0 No (if no,skip to signature and date)
Has your facility implemented mandatory Tier response actions this sample period for any benchmark exceedances?❑✓ Yes ❑ No
If so,which Tier(I, II,or III)?
A copy of this DMR has been uploaded electronically via https://edocs.deq.nc.gov/Forms/SW-DMR ❑✓ Yes ❑ No
Date Uploaded:
Analytical Monitoring Requirements for Outfalls with Industrial Activities—Benchmarks in(Red)
I
Parameter
Code Parameter Outfall Outfall Outfall Outfall Outfall
N/A Receiving Stream Class C; NSW
N/A Date Sample Collected MM/DD/YYYY 03/02/2023
46529 24-Hour Rainfall in inches 0.69
C0530 TSS in mg/L(100 or 50*) 58.8
Additional parameters for outfalls in drainage areas that use>55 gallons per month of new hydraulic oil on average
00552 Non-Polar Oil&Grease in mg/L(15) 1.6
NCOIL Estimated New Motor/Hydraulic Oil
Usage in gal/month
Outfalls to Outstanding Resource Waters(ORW),High Quality Waters(HQW),Trout Waters(Tr)and Primary Nursery Areas(PNA)
have a benchmark TSS limit of 60 mg/L.All other water classifications have a benchmark of
Notes(optional):TSS of sample taken on March 2.2023 during a 0.89"rainlall event was lasted to be 58.8 mgll in exceedan.of process water permit limit.All other parameters were below the benchmark limits.The noncampbant sample can be atnbuted to runoff tram ourneighbl
llI certify by my signature below,under penalty of law,that this document and all attachments were prepared under my direction or supervision in
accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my
inquiry of the person or persons who manage the system,or those persons directly responsible for gathering the information,the information
submitted is„to the best of my knowledge and belief,true,accurate,and complete.I am aware that there are significant penalties for submitting
false inforr ation,including the possibility of fines and imprisonment for knowing violations."
4/21/2023
Signature a mittee or Delegated Authorized Individual Date
Email Address [e-mail] Phone Number 9197476400

Carolina Sunrock—North Raleigh Concrete eDMR NCG140328 and Kittrell Asphalt eDMR NCG160242 for
WW Sample Taken Q1 2023 at Stormwater Pond Outfall 001
Action Plan to Reduce TSS Below Benchmark Limits in NPDES General Stormwater Permit (both plants
drain to this outfall):
TSS of sample taken on March 2,2023 during a 0.69" rainfall event was tested to be 58.8 mg/I in
exceedance of the process water permit limit.All other parameters were below the benchmark limits.
The non-compliant sample can be attributed to runoff from our neighbor's exposed soil (graded area
along property boundary for tree plantings)flowing into our diversion ditch that leads to our SW Pond.
Additionally,some sediments from our concrete yard that make it to our SW Pond could be contributing
to this elevated TSS reading;our action plan is underway to work with our neighbors to ensure that they
achieve a well established groundcover on their disturbed areas draining onto our site,continue our
diligence in scraping our yard of sediment and properly disposing in our concrete recycle pile,and
cleaning out our sediment catch basin at the concrete plant more often.This action plan will be
completed by the end of Q2.