NCG030666_DMR_20210928

6
St
4 '.8).\U.S. CHEMICAL 10 NC
River
Wilkesboro,,NC 28697
Storage Office: [phone]
Fax: [phone]
NC Department of
September 21, 2021 Environmental ivedQuality
Division of Water Quality SEP 2 8 2021
Attn: DWQ Central Files
450 West Hanes Mill Road Suite 300 Winston-Salem
Winston-Salem, NC 27105 Regional Office
Re: Stormwater Discharge Monitoring Report—2021 Period 2
US Chemical Storage (Wilkesboro)
1806 River St
Wilkesboro, NC 28697
Permit Number: NCG030666
To Whom It May Concern:
Please find enclosed the completed Semi-Annual Stormwater Discharge Monitoring Report for North
Carolina Division of Water Resources General Permit No.NCG030000 for US Chemical Storage,
located at the above mentioned address.
Unfortunately the parameter for Zinc was not in line with the benchmark level. For this sample, we are
now in Tier I response for single benchmark exceedance.
If you have any questions or concerns, please feel free to contact Adrianne Brookshire at (336) 990-
0912 or via email at abrookshire(cuuschemicalstorage.com.
Sincerely,
C(�
L1/u ,
Adrianne Brookshire
HR/Safety Manager
Enclosures

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
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. NCGO3 0666 Person Collecting Samples: Adrianne Brookshire
Facility Name: US Chemical Storage, LLC Laboratory Name: Pace Analytical
Facility County: Wilkes Laboratory Cert. No.: 12
Discharge during this period:Q Yes No (if no,skip to signature and date)
Has your facility implemented mandatory Tier response actions this sample period for any benchmark exceedances?Q Yes 0 No
If so,which Tier(I, II, or III)? I
A copy of this DMR has been uploaded electronically via https://edocs.deq.nc.gov/Forms/SW-DMR E Yes D No
Date Uploaded:9/21/2021
Analytical Monitoring Requirements for Outfalls with Industrial Activities—Benchmarks in (Red)
Parameter Parameter Outfall 1 Outfall Outfall Outfall Outfall
Code
N/A Receiving Stream Class Yadkin
N/A Date Sample Collected MM/DD/YYYY 8/17/2021
46529 24-Hour Rainfall in inches 2.25
C0530 TSS in mg/L(100 or 50*) 9.6
00400 pH in standard units (6.0-9.0 FW,
6.8-8.5 SW)
01119 Copper,total recoverable in mg/L ND
(0.010 FW,0.0058 SW)
Lead,total recoverable in mg/L
01051 ND
(0.075 FW,0.22 SW)
01094 Zinc,total recoverable in mg/L(0.126
FW,0.095 SW)
00340 Chemical Oxygen Demand(COD) in N/A
mg/L(120)
00552 Non-Polar Oil&Grease in mg/L(15) N/A
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
w (Freshwater)sw(Saltwater)
Notes(optional):Pace Analytical did not have enough sample to get pH. They have corrected this going forward.
"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 inf.' ation,l*ncl i e possibility of fines and imprisonment for knowing violations."
UJ 9/14/2021
Signature of Permitte or Delegated Authorized Individual Date
[e-mail] 336-990-0912
Email Address Phone Number