NCG200513_MONITORING REPORT_20201130

November 20, 2020
CERTIFIED MAIL
RETURN RECEIPT REQUESTED .
7017 2680 0000 6540 2347
Mr. James Moore
NCDEQ-Regional Office Engineer
NC Dept. of Energy, Minerals and Land Resources
o°�d�aF�
Mooresville Regional Office 19
610 East Center Avenue, Suite 301 s`"P°` / ��1Q
�P yfL� l
Mooresville, NC 28115
d/OOP
RE: General Stormwater Permit Monthly Sampling Event (October 2020)`P
Certificate of Coverage No. NCG200513
Dear Mr. Moore:
With this submittal, the United Scrap Metal — Charlotte Facility (USM) is providing the October
2020 monthly discharge monitoring report (No Discharge). An updated 'results table is also
enclosed. USM is currently monitoring monthly due to "Tier Three" status for copper and zinc.
Note that business at the facility has increased to the point where combined motor/hydraulic
usage exceeds 55-gallons per month. The current monthly average has been added to the DMR
for October 2020.
Installation of Regenerative Stormwater Conveyances at Outfalls 003 and 004 will be completed
during the month of November 2020. USM continues investigative actions and site specific best
management practices to reduce copper and zinc concentrations in stormwater runoff from the
facility.
Should you have any questions or. comments, please do not hesitate to contact me at 804-621-
7000 or mobile phone [phone].
Sincerely,
UNITED SCRAP METAL, INC.
John Dergo
General Manager
Enclosures
cc: Adam Wilk — USM National Compliance Manager
Tim Monroe— Leaf Environmental & Engineering, P.C.

Semi-annual Stormwater Discharge Monitoring Report (DMR)
for North Carolina DEMLR General Permit No. NCG200000 — Scrap Metal Recycling
Date submitted
CERTIFICATE OF COVERAGE NO. NCG200513
FACILITY NAME United Scrap Metal, Inc.
COUNTY Mecklenburg
PERSON COLLECTING SAMPLES John Dergo
LABORATORY Pace Analytical Services, Inc. Lab Cert. #40 / #37712
Comments on sample collection or analysis:
Part A: Stormwater Benchmarks and Monitoring Results
SAMPLE COLLECTION YEAR 2020
SAMPLE PERIOD
or X Monthly' October (month)
DISCHARGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA
❑Zero -flow ❑Water Supply ❑SA
8 r ❑Saltwater ®Other C
oz_ PLEASE REMEMBER TO SIGN ON THE REVERSE 4
v^
WOW C= M
0= o
X No discharge this period z
Outfall No.
Date Sample
Collected'
(mo/dd/yr)
24-hour rainfall
amount,
Inches'
Total Suspended
Solids
Chemical Oxygen
Demand
Non -polar oil & grease
EPA Method 1664
(SGT-HEM)
Copper,
Total
Lead,
Total
Zinc,
Total
Benchmarks ==>
_
-
100 mg/L or
50 mg/L°
120 mg/L
15 mg/L
0.010 mg/L or
0.005 mg/Ls
0.075 mg/L or
0.210 mg/Ls
0.126 mg/L or
0.090 mg/L'
' Monthly sampling (instead of semi-annual) must begin with the second consecutive benchmark exceedance for the same parameter at the same outfall.
Z For sampling periods with no discharge at any single outfall, you must still submit this discharge monitoring report with a checkmark here.
3The total precipitation must be recorded using data from an on -site rain gauge. Unattended sites may be eligible for a waiver of the rain gauge requirement.
"See General Permit text, Table 3 or Table 4, identifying protected receiving water classifications where the more protective TSS benchmark applies.
s Stormwater discharges into receiving waters classified as saltwater are subject to the second listed benchmark.
Note: Results must be reported in numerical format. For example, do not report Below Detection Limit, BDL, <PQL, Non -detect, ND, or other similar non -
numerical format. When results are below the applicable limits, they must be reported in the format, "<XX me/L", where XX is the numerical value of the
detection limit, reporting limit, quantitation limit, etc. in mg/L.
Note: If you report a sample value in excess of the benchmark, you must implement Tier 1, Tier 2, or Tier 3 responses. See General Permit.
Permit Date: 02/02/2015-12/31/2019 SWU-256, last revised 1/28/2015
Page 1 of 2

Part B: Vehicle Maintenance Area Monitoring Results: only for facilities averaging > 55 gal of new oil per month.
X No discharge this period z
Outfall No.
Date Sample
Collected'
(mo/dd/yr)
24-hour rainfall
amount,
Inches'
Non -polar O&G by EPA
1664 (SGT-HEM)
Total Suspended Solids
New Motor Oil and/or
Hydraulic Oil Usage, annual
Average
(gal/month)
Benchmarks =__>
_
-
15 mg/L
100 mg/L or 50 mg/0
001-004
NA
NA
NA
NA
93
Footnotes from Part A also apply to this Part B
Note: If Vou report a sample value in excess of the benchmark, Vou must implement Tier 1, Tier 2, or Tier 3 responses. See General Permit.
FOR PART A AND PART B MONITORING RESULTS:
• A SINGLE BENCHMARK EXCEEDANCE TRIGGERS TIER 1 REQUIREMENTS.
• 2 EXCEEDANCES IN A ROW FOR THE SAME PARAMETER AT THE SAME OUTFALL TRIGGER TIER 2 REQUIREMENTS.
• TIER 3: HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDANCES FOR THE SAME PARAMETER AT ANYONE OUTFALL? YES ® NO ❑
IF YES, HAVE YOU CONTACTED THE DEMUR REGIONAL OFFICE AS REQUIRED BY THE PERMIT? YES ® NO ❑
REGIONAL OFFICE CONTACT NAME:
Mail an original and one copy of this DMR, including all "No Discharge" reports, within 30 days of receipt of the lab results (or at end of monitoring period
in the case of "No Discharge" reports) to:
Division of Water Resources
Attn: DWR Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, 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 aW significant ➢gnalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
(Signature of
Permit Date: 02/02/2015-12/31/2019
/ /- 023 :_46 do
(Date)
SWU-256, last revised 1/28/201S
Page 2 of 2

Stormwater Quantitative Monitoring - Analytical Results
(NPOES General Peron CM NCG200513)
United Scrap Melal, Inc.
9925 GrOaMON Street, Ciudad , NC 28273
Pineal Sample
Event Number
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66
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