NCG030127_2023 DMR_20230616

June 16, 2023
DEQ Mooresville Regional Office
Attn: DEMLR Stormwater Program
610 East Center Avenue, Suite 301
Mooresville, NC 28115
Re: Stormwater Discharge Outfall Monitoring Report: May Monthly, 2nd Q 2023
Granges Americas Inc.
Rowan County
General Permit NCG030000, Certificate of Coverage NCG030127
Dear Stormwater Permitting Unit;
We respectfully submit the enclosed original signed copy of the Stormwater Discharge Outfall
Monitoring Report (DMR)for the Granges Americas Inc. facility under General Permit Number
NCG030000, Certificate of Coverage Number NCG030127. This submission serves as the Tier
III monthly sampling event for MAY during the 2nd Q 2023 term as outlined in our stormwater
permit. We will continue monthly sampling until three consecutive sample results are below the
benchmark values or within benchmark range as described in our permit.
If you have any questions or comments regarding this Stormwater Discharge Outfall Monitoring
Report(DMR) submission, please contact us at your convenience.
Sincerely,
Gary Gray
Environmental, HealW and Safety Manager
Granges Americas Inc.
Enclosures: Stormwater Discharge Outfall Monitoring Report(DMR)

NCDEQ Division of Energy, Mineral and Land Resources
Stormwater Discharge Monitoring Report(DMR) Form for NCG030000
Metal Fabrication
Click here for instructions
Complete,sign,scan and submit the DMR via the Stormwater NPDES Permit Data Monitoring Report(DMR)Upload form within
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30 days of receiving sampling results. Mail the original,signed hard copy of the DMR to the appropriate DEMIR Regional Office.
I
Certificate of Coverage No. NCGO3 0127 Person Collecting Samples: Ryan R.Osborne(INENCO,INC.)
Facility Name:Granges Americas Inc. Laboratory Name: Pace Analytical Services,LLC
Facility County: Rowan Laboratory Cert. No.: 12,40,381,37706,37712
Discharge during this period:Dyes 0 No (if no,skip to signature and date)
Has your facility implemented mandatory Tier response actions this sample period for any benchmark exceedances?E Yes 0 No
If so,which Tier(I, II,or III)? Ill
A copy of this DMR has been uploaded electronically via https://edocs.deq.nc.gov/Forms/SW-DMR a Yes ❑No
Date Uploaded:
Analytical Monitoring Requirements for Outfalls with Industrial Activities—Benchmarks in(Red)
Parameter Parameter Outfall 1 Outfall 3 Outfall Outfall Outfall
Code
N/A Receiving Stream Class Class C Class C
N/A Date Sample Collected MM/DD/YYYY 05/27/2023 05/27/2023
46529 24-Hour Rainfall in inches 0.50 0.50
C0530 TSS in mg/L(100 or 501 2.5 10.9
00400 pH in standard units(6.0—9.0 FW, 6.38 6.39
6.8-8.5 SW)
01119 Copper,total recoverable in mg/L 0.0197 0.0088
(0.010 FW,0.0058 SW)
01051 Lead,total recoverable in mg/L <0.0010 <0.0010
(0.075 FW,0.22 SW)
Zinc,total recoverable in mg/L(0.126
01094 FW,0.095 SW) 0.0765 0.1200
00340 Chemical Oxygen Demand(COD)in 71 9 64.8
mg/L(120)
00552 Non-Polar Oil&Grease in mg/L(15) <4.8 <4.8
' Outfalls to Outstanding Resource Waters(ORW),High Quality Waters(HQW),Trout Waters(Tr)and Primary Nursery Areas(PNA)
have a benchmark TSS limit of 50 mg/L.All other water classifications have a benchmark of 100 mg/L
n:•,+(Freshwater) ,YY (Saltwater)
Notes(optional): pH sample collected and analyzed by Ryan R.Osborne of INENCO, INC.,North Carolina Field Services Certification#: 5540
"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 knowle*and belief,true,accurate,and complete.I am aware that there are significant penalties for submitting
false information,ipduding the possib fi(y of fines and imprisonment for knowing violations."
.L___ (P —/(o —,20.23
Signature of ittteee or Delegated Authorized Individual Date y l Q /�([/
Email Address Phone Number