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Home My WebLink About20190612 Ver 1_More Info Received_20190827Homewood, Sue From: Adam Williams <adam@bfec.org> Sent: Tuesday, August 27, 2019 9:54 AM To: Homewood, Sue Subject: RE: [External] RE: Academy St apartments Attachments: Pipe Details for Permitting.pdf; ammendment narrative 8-27-19.pdf Follow Up Flag: Follow up Flag Status: Flagged r7offrarnal email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment Sue, Attached please find the information you requested: • A narrative explaining the proposed measures — pipe installation will occur in dry via pump around and also highlighting pipe installation information; • Detail outlining the pipe installation: pump around, and pipe installation detail. All of this information has been attached/added to the digital submission of the PCN as well. Let me know if you have any questions. Thank you, Adam Williams, PWS Brushy Fork Environmental Consulting, Inc. 10565 Highway 421 South Trade, Tennessee 37691 ph: 423.727.4476 cell: 828.773.3820 www.bfec.org "Whether you think you can, or you think you can't --you're right." - Henry Ford 1 From: Homewood, Sue [mailto:sue.homewood@ncdenr.gov] Sent: Monday, August 19, 2019 8:45 PM To: Adam Williams Subject: RE: [External] RE: Academy St apartments Adam, In order to meet the conditions of the General Certification, the installation of the pipe must be done in the dry and temporary impacts above and/or below the pipe will need to be accounted for in the PCN table and called out on the plans. We'll also need a detail of a construction sequence that includes dewatering, as well as a profile view of the pipe showing proper installation (burial) as required by the GC. Thanks, Sue Homewood Division of Water Resources, Winston Salem Regional Office Department of Environmental Quality 336 776 9693 office 336 813 1863 mobile Sue. Homewood@ncdenr.gov 450 W. Hanes Mill Rd, Suite 300 Winston Salem NC 27105 Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. From: Adam Williams <adam@bfec.org> Sent: Monday, August 19, 2019 3:08 PM To: Homewood, Sue <sue.homewood@ncdenr.gov> Subject: [External] RE: Academy St apartments External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to report.spam@nc.gov Sue, Our client has decided to proposed a pipe rather than relocation. See attached — which has been added and edited with the PCN. Let me know if you have any questions or anticipate any unforeseen hurdles. Thanks, Adam Williams, PWS Brushy Fork Environmental Consulting, Inc. 10565 Highway 421 South Trade, Tennessee 37691 ph: 423.727.4476 cell: 828.773.3820 www.bfec.org "Whether you think you can, or you think you can't --you're right." - Henry Ford From: Homewood, Sue[mailto:sue.homewood(a)ncdenr.Qov] Sent: Thursday, August 15, 2019 4:23 PM To: Adam Williams (adamabfec.org) Cc: Fuemmeler, Amanda J CIV (US) Subject: Academy St apartments Adam, The proposed relocation of 27' of stream appears to be as cut into a hillside. I'm unclear how this channel will function properly (hydrologic flow and permanent stability) if it is excavated into a hillside adjacent to the current channel location (the plan doesn't show any changes to grade where the existing channel is now, it appears they just need to meet a buffer and instead of designing the building to meet the buffer they want to move the stream to meet the buffer). Maybe if you could provide final grading plans for the area it would help? Also, can you please provide a longitudinal profile and slope and a discussion of whether you evaluated any needed for a grade control structure. And a discussion of how the radius of curvature was determined to be stable given the steepness of the site. Mountain streams don't often have meanders of this magnitude in them. I apologize that I haven't seen the site and maybe this would make more sense if I had but I don't have time to get up there right now. Thanks, Sue Homewood Division of Water Resources, Winston Salem Regional Office Department of Environmental Quality 336 776 9693 office 336 813 1863 mobile Sue. Homewood@ncdenr.gov 450 W. Hanes Mill Rd, Suite 300 Winston Salem NC 27105 Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. Project Narrative: Action ID: SAW -2019-00778; Academy Street Development Project Edit 8-27-19: This permit was previously resubmitted with a request to impact an additional 27 linear feet of an unnamed tributary to Naked Creek, as outlined below. Rather than implement the proposed relocation of 27 linear feet of stream, the plan has been altered to culvert 20 linear feet of stream instead using 18" HDPE. Approximately 4 linear feet of stream upstream and downstream of the culvert (8 feet total) will be impacted by the installation of boulder wing walls. Culvert installation will be conducted in the dry and the stream will be pumped around as shown on the culvert installation detail sheet. With this design change the total amount of stream impacts is 149 linear feet. 7-30-19: The existing permit for the above referenced project originally proposed 121 linear feet of stream impact. Due to construction complications a new design has been proposed, adding an additional 27 linear feet of stream impact to the original plan. The proposed impacts are now 148 Linear feet of impact to the unnamed tributary to Naked Creek. The channel will be relocated approximately 10 feet away from the proposed residential complex (See Attached Red Line Drawing). The channel will be constructed with a mini excavator and skid steer. The constructed channel will be approximately two (2) feet wide and one (1) foot deep (to match existing upstream and downstream channel width/depths). Proposed streambanks will be sloped at 2:1 or less to meet natural existing grade at the site. The banks of the channel will then be seeded, strawed, and matted with coconut coir erosion control matting to stabilize the soil. Construction of the new channel will be completed and stabilized in one day. Culvert Installation D PUMP AROUND TYPICAL CULVERT DETAIL Consfiucfion Seouence far Pu1nG1;7a >. C/eai area for -al dam of debris 2. Loynuf hose and pump a/ong route odequafe to a//aw for proper insfa//afion of cu/wrt. Pioride sp/ash pad of of hose 71W fa spread 0120' slaw ue%city of flow before reentering 20' /ire sfreom flaw. 4 /12Sto// Sandbags Or Rip Rap (NCOOT Class Bj ^+ perpendc lar fo flow 0f wafer 5. A//ow far overflow weir �4' min width 0120' ->.5min Mdepth _ 6. O✓er/oy dam sfiucture with non permeab/e- -' - ` p/aslic or Simi/ar materia/. 7. Begin pumping Process, with regu/ar monifoiing - — _ -,., _ _— - ro, �B wk !o ensure hose flaw to ulEn XEAnwALL 0120' check ensure does lot clog and restrict flow. 8. /f %n-sfreom "work exfends 0':7e o0'oy, - - - - aoen weir Secf/on of sand bogs !o !!ow through work area ownloL AtlY-XAIFAHFIMILMC .Vt.IO BIC 2lP 8' ROPE PIPE fYBP 9a•A22Y/.I!£ ICBRW 77 .i 5. OULOER NIHCWALL � � -77 ANK kE PLAN VIEW �2" MIN. 8" HDPE PIPE- — — — _ _ 1-1 I 1-1 I I-III-I _ _ _ 11-1 11-1 I 1= 2' MIN. 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