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Home My WebLink About20190418 Ver 1_More Info Received Email_20190510Strickland, Bev From: Joey Lawler <JLawler@smeinc.com> Sent: Friday, May 10, 2019 8:01 AM To: Annino, Amy M; James Hubbard; Chris Stahl Cc: Fuemmeler, Amanda J CIV (US) Subject: RE: [External] Marion Lake Dam Attachments: REVISED PCN PAGES.PDF I email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to Aov Amy— I have attached a revised PCN page that changes the impacts from wetlands to open waters. With respect to your other question - once the stream has been restored and vegetation re-established within the footprint of the former reservoir, the coffer dam and filter socks will be removed and the pipe day -lighted. Although we don't anticipate that removal/replacement of the filter socks will be required, sediment loading within the micro -pool will be periodically monitored during construction, and minor maintenance may be performed if necessary. Thanks and let me know if you need anything else - j Joey Lawler, PWS Natural Resources Project Manager S&ME 9751 Southern Pine Blvd. Charlotte, NC 28273 0: 704.523.4726 111 E M: 704 604 6474 www.smeinc.com BUILT F O R Linkedln I Twitter I Facebook VERSATILITY This electronic message is subject to the terms of use set forth at www.smeinc.com/email. If you received this message in error please advise the sender by reply and delete this electronic message and any attachments. Please consider the environment before printing this email. From: Annino, Amy M [mailto:amy.annino@ncdenr.gov] Sent: Thursday, May 9, 2019 3:30 PM To: James Hubbard <jhubbard@smeinc.com> Cc: Joey Lawler <JLawler@smeinc.com> Subject: RE: [External] Marion Lake Dam James, Thank you for this latest drawing set. The PCN lists impacts under the wetlands category. After discussion with Amanda Jones at USACE, she indicated that impacts should be listed under the open water impact table. Can you revise the PCN and resend? Also, do you anticipate the need to periodically clean out the 10' x 10' micro pool or maintain/replace filter sock? We are wondering if access to this area for maintenance will be needed. Thanks, Amy Annino Environmental Specialist —Asheville Regional Office Water Quality Regional Operations Section NCDEQ — Division of Water Resources 828 296 4656 office amy.annino(cancdenr.gov 2090 U.S. Hwy. 70 Swannanoa, N.C. 28711 1�-�Nothtng Compares] Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties From: James Hubbard <jhubbard@smeinc.com> Sent: Thursday, May 09, 2019 11:40 AM To: Annino, Amy M <amy.annino@ncdenr.gov> Cc: Joey Lawler <JLawler@smeinc.com> Subject: [External] Marion Lake Dam External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to report.spam@nc.gov Hey Amy, Attached is our latest drawing set which includes the cross section you were looking for. After receiving some data in the field, we updated the culvert size to 18 inches in diameter. Below I have included a summary of our culvert calculations. S&ME did not want the dam to overtop during the 100 year storm. Also, we did not want the soil coffer dam (elevation of 1291.5') to overtop during a 2 year storm. The 18 inch diameter culvert is the only size that could meet our goals. Please let us know if you have any other concerns. Long Terrn Dewatering Peak Stage (ft) Culvert Diameter 24 -Hour Design Storm 121nCh 15 Inch 18 Inch 1 -Year 1288.7 1287.9 1287.8 2 -Year 1290.7 1289.6 1288.9 10 -Year 1298th 1296.3 1294.8 Year 1308.0 1305.9 1818.7 100 -Year Overtop Overtop 1308.4 Thanks, James Hubbard, P.E. Project Engineer This electronic message is subject to the terms of use set forth at www.smeinc.com/email. If you received this message in error please advise the sender by reply and delete this electronic message and any attachments. Please consider the environment before printing this email. SWE • 9751 Southern Pine Blvd. Charlotte, NC 28273 map 0: 704.523.4726 111 E M: 843.343.7880 wvvw.smeinc.com BUILT FOR Linkedln I Twitter I Facebook VERSATILITY This electronic message is subject to the terms of use set forth at www.smeinc.com/email. If you received this message in error please advise the sender by reply and delete this electronic message and any attachments. Please consider the environment before printing this email. 2ZkHour Design Storm Culvert Diameter 12 Inch 15 Inch 18 Inch I Year 1M.7 IM7.9— IM7.3 2 Year Tavertop 1M.7 IM!L6 IMA lMear 12!)4.8 1�� I= IM9 1305 1303.7 Ovemop I�A =0 III =0 III C. Proposed Impacts Inventory 1. Impacts Summary 1 a. Which sections were completed below for your project (check all that apply): ❑ Wetlands ❑ Streams - tributaries ❑ Buffers ® Open Waters ❑ Pond Construction 2. Wetland Impacts If there are wetland impacts proposed on the site, then complete this question for each wetland area impacted. 2a. 2b. 2c. 2d. 2e. 2f. Wetland impact Type of jurisdiction number — Type of impact Type of wetland Forested (Corps - 404, 10 Area of impact Permanent (P) or (if known) DWQ — non -404, other) (acres) Temporary T W1 ❑ P ❑ T ❑ Yes ❑ Corps ❑ No ❑ DWQ W2 ❑ P ❑ T ❑ Yes ❑ Corps ❑ No ❑ DWQ W3 ❑ P ❑ T ❑ Yes ❑ Corps ❑ No ❑ DWQ W4 ❑ P ❑ T ❑ Yes ❑ Corps ❑ No ❑ DWQ W5 ❑ P ❑ T ❑ Yes ❑ Corps ❑ No ❑ DWQ W6 ❑ P ❑ T ❑ Yes ❑ Corps ❑ No ❑ DWQ 2g. Total wetland impacts 2h. Comments: No wetland impacts will occur. 3. Stream Impacts If there are perennial or intermittent stream impacts (including temporary impacts) proposed on the site, then complete this question for all stream sites impacted. 3a. 3b. 3c. 3d. 3e. 3f. 3g. Stream impact Type of impact Stream name Perennial Type of jurisdiction Average Impact number - (PER) or (Corps - 404, 10 stream length Permanent (P) or intermittent DWQ — non -404, width (linear Temporary (T) (INT)? other) (feet) feet) S1 ❑ P ❑ T ❑ PER ❑ Corps ❑ INT ❑ DWQ S2 ❑ P ❑ T ❑ PER ❑ Corps ❑ INT ❑ DWQ S3 ❑ P ❑ T ❑ PER ❑ Corps ❑ INT ❑ DWQ S4 ❑ P ❑ T ❑ PER ❑ Corps ❑ INT ❑ DWQ S5 ❑ P ❑ T ❑ PER ❑ Corps ❑ INT ❑ DWQ S6 ❑ P ❑ T ❑ PER ❑ Corps ❑ INT ❑ DWQ 3h. Total stream and tributary impacts 3i. Comments: No stream impacts will occur. Page 5of11 PCN Form — Version 1.3 December 10, 2008 Version 4. Open Water Impacts If there are proposed impacts to lakes, ponds, estuaries, tributaries, sounds, the Atlantic Ocean, or any other open water of the U.S. then individually list all open water impacts below. 4a. Open water impact number — Permanent (P) or Temporary T 4b. Name of waterbody (if applicable) 4c. Type of impact 4d. Waterbody type 4e. Area of impact (acres) 01 ❑ P ® T Lady Marian Reservoir Fill placement Lake being drained 0.052 02 ❑P❑T 03 ❑ PEI T 04 ❑P❑T 4L Total open water impacts 4g. Comments: See cover letter for additonal information 5. Pond or Lake Construction If pond or lake construction proposed, then complete the chart below. 5a. Pond ID number 5b. Proposed use or purpose of pond 5c. Wetland Impacts (acres) 5d. Stream Impacts (feet) 5e. Upland (acres) Flooded Filled Excavated Flooded Filled Excavated Flooded P1 P2 5L Total 5g. Comments: 5h. Is a dam high hazard permit required? ❑ Yes ❑ No If yes, permit ID no: 5i. Expected pond surface area (acres): 5j. Size of pond watershed (acres): 5k. Method of construction: Page 6 of 11 PCN Form — Version 1.3 December 10, 2008 Version