NCG140328_2023 DMR_20230421

NCDEQ Division of Energy,Mineral and Land Resources
Wastewater Discharge Monitoring Report (DMR) Form for NCG140000
Ready-Mixed Concrete
Click here for instructions
Complete,sign,scan and submit the DMR via the Stormwater NPDES Permit Data Monitoring Report(DMR) Upload form within
30 days of receiving sampling results. Mail the original,signed hard copy of the DMR to the appropriate DEMLR Regional Office.
Mailed in DMRs must contain an original wet signature. Electronic signatures will not be accepted for mailed in DMRs.This is a
requirement until the permittee has registered for eDMR for reporting.
Certificate of Coverage No. NCG140328 Person Collecting Samples:Nicholas Murphrey
Facility Name: CarolinaSunrock-NorthRaleighConcrete Laboratory Name: Eurofins
Facility County: Wake Laboratory Cert.No.: 269
Discharge during this period:ID Yes ❑ No (if no,skip to signature and date)
Has your facility implemented mandatory Tier response actions for any benchmark exceedances?Q 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 Q Yes ❑ No
Date Uploaded:
Part A:Analytical Monitoring Requirements for Outfalls with Industrial Activities—Effluent Limits in(Red)
Parameter Parameter Outfall Outfall Outfall Outfall Outfall
Code
N/A Receiving Stream Class C; NSW
N/A Date Sample Collected MM/DD/YYYY 03/02/2023
82220 Daily Flow Rate in cfs(50%of 7Q10
for HQW/ORW)
C0530 TSS in mg/L(30,20,or 10*) 58.8
00545 Settleable Solids in HQW,ORW,SA, <0.
SB,Tr&PNA(5 mL/L)
00400 pH in standard units(6.0-9.0 O p.9
freshwater,6.8-8.5 saltwater)
Non-Polar Oil&Grease in mg/L(N/A, ■
00552 but samples above 15 require tiered1 responses)
* Outfalls to Outstanding Resource Waters(ORW),High Quality Waters(HQW)have a TSS limit of 20 mg/L,outfalls to Trout Waters(Tr)and
Primary Nursery Areas(PNA)have a TSS limit of 10 mg/L.All other water classifications have a benchmark of
Notes(optional):TSS of sample taken on March 2,2023 during a 0.69.rainfall event was tested to be 50.6 moll in eeceedence of process water permit limit All other parameters were below the benchmark limits.The nonrempllant sample can be attributed to rune(from our nelghbo
"I 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 information,including the possibility of fines and imprisonment for
knowin violations."
4/21/2023
Sign e f P mittee or Delegated Authorized Individual Date

Carolina Sunrock—North Raleigh Concrete eDMR NCG140328 and Kittrell Asphalt eDMR NCG16O242 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.