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Home My WebLink AboutNCS000546_Emails RE Wastewater Reroutes and Other Info_20160616From: Randall, Mike To: "Hartfield. Ross" Subject: RE: Allen Steam Station Wastewater Reroutes Date: Thursday, June 16, 2016 9:33:00 AM Attachments: imaae001 Jga Ross I looked at the permit and determined that the permit will not need to be modified for project the outfalls SW001, SW001A, SW002, and SW018. Mike Randall Stormwater Permitting Program NC Division of Energy, Mineral and Land Resources (DEMLR) Land Quality Section Stormwater Permitting 1612 Mail Service Center Raleigh, NC 27699-1612 Office: 919-807-6374 Cell: 919-389-7801 Email correspondence to and from this address may be subject to public records laws From: Hartfield, Ross [mailto:Ross. Hartfield@duke-energy.com] Sent: Wednesday, June 15, 2016 10:01 AM To: Randall, Mike <mike.randall@ncdenr.gov> Subject: FW: Allen Steam Station Wastewater Reroutes Mike, As of now, this is what we have planned. The project would influence outfalls SW001, SW001A, SW002, and SW018. The drainage area descriptions for these outfalls are provided in the first attachment. Let me know if you have any questions. ®❑ Ross E. Hartiield Environmental Specialist 2 1 EHS CCP Compliance and Permitting 526 South Church Street I EC13K I Charlotte, NC 28202 Office: 980 373 6583 Cell: 225 2813971 Fax: 704 382 0249 Ross. HartfieldPduke-eneray.com From: Randall, Mike[mailto:mike. randaII(a)ncdenr.gov] Sent: Friday, May 06, 2016 3:49 PM To: Hartfield, Ross Subject: Re: Allen Steam Station Wastewater Reroutes *** Exercise caution. This is an EXTERNAL email. DO NOT open attachments or click links from unknown senders or unexpected email. *** Duke will need to modify SPPP. Send me the description and I'll check to see if we need to modify the permit. Sent from my iPhone Mike Randall Stormwater Permitting Program (DEMLR) Office: 919-807-6374 Cell: 919-389-7801 1612 Mail Service Center Raleigh, INC 27699-1612 NC Division of Energy, Mineral and Land Resources Email correspondence to and from this address may be subject to public records laws On May 6, 2016, at 3:26 PM, Hartfield, Ross <Ross.Hartfield (@duke-energy.com> wrote: Mike, Since the three drainage areas will be altered, I imagine that will need to adjust the descriptions in the SPPP, correct? Will we need to do anything in addition to that? <i mage001.j pg> Ross E. Hartfield Environmental Specialist 2 1 EHS CCP Compliance and Permitting 526 South Church Street I EC13K I Charlotte, NC 28202 Office: 980 373 6583 Cell: 225 2813971 Fax: 704 382 0249 Ross. HartfieldPduke-eneray.com From: Hartfield, Ross Sent: Friday, May 06, 2016 3:21 PM To: 'Chernikov, Sergei'; Randall, Mike Subject: Allen Steam Station Wastewater Reroutes Sergei and Mike, As part of a major effort to reroute both wastewater and stormwater at Allen Steam Station, Duke is planning to install a retention basin in the northern part of the Allen property. This basin will be located in portions of the stormwater drainage areas 1, 2, and 18. The basin is planned to receive flows from the coal yard sump, the yard sump, the FGD stormwater sump, and wastewater effluent. See attachments for more detail. We do not yet have the specifics for the outfall structure or when this will be completely implemented, but we plan to have a discharge to the Catawba River. I wanted to give you a heads up on this effort so that you can become familiar with it, and if Land Quality talks to you about it, you will not be unaware. If you have any comments, questions, or concerns, please feel free to contact me. <image001.jpg> Ross E. Hartiield Environmental Specialist 2 1 EHS CCP Compliance and Permitting 526 South Church Street I EC13K I Charlotte, NC 28202 Office: 980 373 6583 Cell: 225 2813971 Fax: 704 382 0249 Ross. HartfieldPduke-energy.com <Retention Basin WR Summary Allen.pdf> <Area for Allen Retention Basin.jpg> Retention Basin Description 1. Primary Settling a. Two equally sized primary settling basins will be provided. b. The primary settling basin is expected to settle out particles and provide access for maintenance equipment to remove the accumulated solids. c. Flow to the primary settling basins will be pumped and regulated by an inlet box with two discharge sluice gates. The sluice gates will channel the flow to either one of the primary basin. d. Each basin will have a vacuum truck unloading pad. e. A partition berm will separate the primary and secondary basin. The partition berm will incorporate an overflow weir. Weir elevation will be set to maintain normal pool elevation. f. The basin will have a Geosynthetic Clay Liner (GCL) for leak prevention along with a granular protective cover over the liner system. 2. Secondary Settling a. The secondary settling basin will be a single cell and designed to allow positive flow through the basin channel. b. The basin will have a Geosynthetic Clay Liner (GCL) for leak prevention along with a granular protective cover over the liner system. c. The following general pond geometry criteria will be use: 1) Minimum depth: 5 feet 2) Free board ❑ Wave action: 1.5 feet ❑ Rainfall: 1.0 feet ❑ Surge volume: 1.5 feet Water Redirection Description The water flows that will be rerouted from the ash basin to the new retention basin are identified in the following list. a. Coal Yard Sump b. Yard Drainage Sump c. Truck Wash Drains -to FGD SW Sump d. Landfill leachate-to CY Sump e. FGD Storm Water Sump f. WWT effluent 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 CD E 2 I .. z Q 0 U C� z E w w z z w J J W z z 0 0 U 06 U) z m 0 N c� o no. I date I by I ckd I 0 660 656 652 648 644 640 636 632 628 624 620 616 612 608 604 600 596 592 588 584 580 652 648 644 640 636 632 628 624 620 616 612 608 604 600 596 660 656 652 648 644 640 636 632 628 624 620 616 612 608 604 600 596 0+00 1+00 2+00 3+00 4+00 5+00 6+00 7+00 8+00 9+00 10+00 SECTION ! H� 0 60' 120' SKC014 HORIZONTAL `0-1F SCALE IN FEET 0 10' 20' 40' VERTICAL SCALE IN FEET 0+00 1+00 2+00 3+00 4+00 5+00 SECTION ! a� 0 60' 120' SKC014 HORIZONTAL `O-r SCALE IN FEET 0 10, 20' 40' VERTICAL SCALE IN FEET 0+00 1+00 2+00 3+00 4+00 5+00 SECTION �1 0 60' 120' SKC014 HORIZONTAL N%./ SCALE IN FEET 0 10, 20' 40' VERTICAL SCALE IN FEET description no. I date I by I ckd 6+00 6+00 7+00 7+50 7+00 652 648 644 640 636 632 628 624 620 616 612 608 604 600 596 description F-01101 660 656 652 648 644 640 636 632 628 624 620 616 612 608 604 9+00 9+50 0+00 660 656 652 648 644 640 636 632 628 624 620 616 612 608 604 600 596 11+00 12+00 13+00 14+00 15+00 16+00 1+00 2+00 3+00 4+00 5+00 6+00 SECTION �1 0 60' 120' SKC014 HORIZONTAL `O-r SCALE IN FEET 0 10, 20' 40' VERTICAL SCALE IN FEET 17+00 7+00 BURNS �MSDONNELL 9400 WARD PARKWAY KANSAS CITY, MO 64114 816-333-9400 FIRM LICENSE NO C-1435 designed detailed D.KUNSTEL I M. COCHRAN 18+00 • 19+00 19+50 9+00 9+50 660 656 652 648 644 640 636 632 628 624 620 616 612 608 604 600 596 592 588 584 580 660 656 652 648 644 640 636 632 628 624 620 616 612 608 604 PRELIMINARY -NOT FOR CONSTRUCTION ALLEN RETENTION BASIN DUKE SECTIONS project contract ENERGYo 88679 drawing rev. SKC015 - A sheet of sheets GASTON COUNTY, NORTH CAROLINA file 88679SKC015.DWG = 10, = ■ -? = L C I IF Li I K IL w a> E 9 10 11 12 13 14 15 16 � I \ I \ RB-10 ) \ I \ I I I J I \ \ WA -N tio � l I / C,9T\ .k 193 RB-06 RB-07 X c I \ ` I GRAVEL PARKING ' ` ...JI I LV C) / ► s 1 �. PAVED / Q \ TRAILERS ecr� TR -------- �•� �� \ 2 \\ 642.7 X FP 6) 643.0 V 612.7 m - ------ ---- ------ 0 17 18 19 ' A FE \ �.9 589 IH I 1 2 3 4 5 6 7 ° FOOTBALL FIELD o \ \ ALI \\ RB-05 -RB-01 0 RB-04 ° GRAVEL PARKING 4 O 0 626.8 x ° 4 RB-02 BORING# NORTHING EASTING DEPTH REMARKS RB- 1 532,095.27 1,398,083.15 RB-02 531 998.90 1,398,369,17.. RB-03 532 282.20 1,398,691.20 RB-04 ... 532 355.43 1,398,277.09 RB-05 532,615.44 1,398,243.94 RB-06 532 606.38 1,398,839.96 RB-m7 53Z576.36 1,399,18M2 RB-10 532 890.82 1,399,306.30 1 Google'earth 3 In sm1b (S-7 S-6 `S-5 W^ Google earth N o20s0009la r000rc M, �t 3 OW001 and SWO01A ro�' SWO02 aSW003 ' �Alte rn ale Sam^lin( Gbogle earth oo ♦ NI s�1�` W