NCS000546_MONITORING REPORT_20210604

DUKE
rt EN`
June 3, 2021
NCDEQ, Mooresville Regional Office
Attn: DEMLR Stormwater Program
610 East Center Ave., Suite 301
Mooresville, N.C. 28115
Subject: Duke Energy Carolinas, LLC
NPDES Storm Water Discharge Monitoring Report for:
Allen Steam Station — NCS000546 — Gaston County
Allen Steam Station
253 Plant Allen Rd.
Belmont, NC 28012
704 829-2587
N
In accordance with Part III, E(2) of the above referenced NPDES Storm Water permit, the original and one
copy of the monthly monitoring reports are attached. The samples collected are required monthly due to
Tier Two or Tier Three Status. The period for sampling ended May 31, 2021. Samples were collected for the
period at outfalls SW007, SW009, SW010, SW016, SW018 and SW020 on May 3, 2021. The laboratory
analysis results were received on May 14, 2021. Duke Energy has performed the steps required by the Tier
II and Tier III for these outfalls. There were no samples collected at outfalls SW001, SW013-10 and SW013-
13 for the period, due to No Qualifying Flow condition.
Analytes sampled above the benchmark values for analytical monitoring are as follows.
Outfall
Parameter
Result
Benchmark
SW016
Zinc
0.243 mg/L
0.126 mg/L
All values reported on the attached reports are dependent on the accuracy of approved analytical methods
used to measure parameters.
Please direct any correspondence or questions concerning the Allen Steam Station NPDES Storm Water
Program to Elizabeth Glenn [phone] or Randy Gantt [phone].
Yours truly,
Rick R. Roper, General Manager III
Allen Steam Station
Duke Energy Carolinas, LLC

Attachments
bc: w/attachment Elizabeth Glenn
UPS Tracking: 1Z X67 601 42 9439 5403

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