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NCS000546_MRO Copy Monitoring Report_20210319Allen Steam Station DUKE ENERGY March 18, 2021 R�CA� AM ��® Mo res d Q R /s on ° �n a/ Office 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 Duke Energy 253 Plant Allen Rd. Belmont, NC 28012 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 February 28, 2021. Samples were collected for the period at outfalls SW010, SW016, and SWO18 on February 11, 2021 and samples were collected at outfalls SW007, SWO09 and SW020 on February 22, 2021. The laboratory analysis results were received on March 2, 2021 and March 9, 2021 respectively. 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. OutfaIll Parameter I Result I Benchmark SWO07 I Zinc 10.386 m /L 10.126 m /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 (980) 373-0530 or Randy Gantt (704) 829-2587. Yours truly, Rick R. Roper, General Manager III Allen Steam Station Duke Energy Carolinas, LLC Allen Steam Station (ow) DUKE ENEIII RGY Attachments bc: w/attachment Elizabeth Glenn UPS Tracking: 1Z X67 601 42 9594 3934 Duke Energy 253 Plant Allen Rd. Belmont, NC 28012 0 A cn ^d �U N •� � O O O O O O O R o O U H o 0 0 0 0V 0 a � •�y O O O O O O � +0,, o0.1H o00 00I VI 0 H N O CG `a c��00000000000 N N N O F� V C;c; V V V o z zz o ;,, w000ww��o c d o 0 o F H o 0 V 0 00 0 00 o a aPk azz��'r ea W W r . Ha.� o00 Z, Zo00 rs a e� c � oC7 Q�d��ddQ� kn FGao zzzzzzzzz � � N N z N N N z z N N N O M ��aor�M�c000 o 0 0 0 0 0 0 0 0 lO z 3333�3333 O N O N O N � as C7 w w w 00 O O O d o � OV]C%U E O�O��COON�N fs w Gar z zz H ►4 z N N N z z N N N- o � oz 333333333'� � u U U U cl� O ' � •V a. O C ~' C 3 a U Nj_T>.1A NW A �