NCG140470_2023 DMR_20230707

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. NCG140470 Person Collecting Samples:Nicholas Murphrey
Facility Name: Carolina Sunrock-Kittrell Concrete Laboratory Name: Eurofins
Facility County: Laboratory Cert. No.: 269
Discharge during this period:0 Yes ❑ No (if no,skip to signature and date)
Has your facility implemented mandatory Tier response actions 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:
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 WS-IV;NSW
N/A Date Sample Collected MM/DD/YYYY 6/20/2023
82220 Daily Flow Rate in cfs(50%of 7Q10
for HQW/ORW)
C0530 TSS in mg/L(30,20,or 10*) 46.5
Settleable Solids in HOW,ORW,SA, .
00545 SB,Tr&PNA(5 mL/L)
00400 pH in standard units(6.0-9.0 7.
freshwater,6.8-8.5 saltwater) V
Non-Polar Oil&Grease in mg/L(N/A, .
00552 but samples above 15 require tiered
responses)
* Outfalls to Outstanding Resource Waters(ORW),High Quality Waters(HOW)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 30 mg/L
Notes(optional):TSS was measured to be 46.5mg/I based upon our stonnwaler sample collected by a third party on 5120/2023;all other parameters were well below benchmark limits;significant site improvements were made 6/66/12/2023 including grading and permanent stabdizal
"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
knowing violations."
Tracy E. Davis PE Digitally signed by Tracy E. Davis, P 7/7/2023
Date:2023.07.07 13:52:10-04 00
Signature of Permittee or Delegated Authorized Individual Date

Carolina Sunrock- Kittrell Concrete eDMR NCG140470 for WW Sample Taken Q2 2023 at Stormwater
Pond Outfall 001
Action Plan to Reduce TSS Below Benchmark Limits in NPDES General Stormwater:
TSS was measured to be 46.5 mg/I based upon our stormwater sample collected by a third party on
6/20/2023; all other parameters were well below benchmark limits; significant site improvements were
made 6/6-6/12/2023 including grading and permanent stabilization of an upstream concrete washout
weir ditch line to the SW pond; installation of a retaining wall along the asphalt fines storage area;
deepening of the sediment catchment pit and installation of a subsurface retaining wall and block
spillway section at the asphalt plant prior to flow into the SW pond forebay; SW pond forebay cleanout;
and replacement of the level spreader that serves as the SW pond's outfall/sampling location;
ACTION PLAN: as the mentioned site improvements were completed just prior to the SW sampling event
and heavy rains persisted during this time,there is a chance that the disturbance caused by these
improvements may have caused elevated TSS in the SW pond and discharge; also algae has been
prevalent in the SW pond that is likely the direct cause of the high TSS readings; we will continue to treat
the pond with algae control treatments and adjust dosage accordingly to bring the TSS down