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HomeMy WebLinkAbout20200504 Ver 2_cover letter_revised PCN_10-6-21_20211117Environmental Consultants, 8412 Fails of Neuse Road, Suite 104, Raleigh, NC 27615 • Phone: (919) 846-5900 sandec.com To: RALEIGH REGULATORY FIELD OFFICE US Army Corps of Engineers Attn: Lyle Phillips 3331 Heritage Trade Drive, Suite 105 Wake Forest, North Carolina 27587 From: Kevin C. Martin Soil & Environmental Consultants, PA October 6th, 2021 S&EC Project #13587 NC DWR, Raleigh Regional Office Attn: Stephanie Goss 3800 Barrett Drive Raleigh, NC 27609 Re: The Pointe at Town Center DWR Project # 20200504, Corps SAW-2020-00674 Raleigh, Wake County, NC On behalf of the applicant, Triangle Town Center Holding, LLC (Attn: Mark Tipton) please find attached a revised PCN application form and supplemental information addressing comments by the USACE and NCDWR. The applicant is requesting approval to utilize Nationwide permit 29 from the USACE and associated the 401 Water Quality Certifications as well as a Buffer Authorization from N.C. Division of Water Resources (NCDWR). Impacts are below wetland and stream loss mitigation thresholds but Impact 2 will require buffer mitigation. The proposed project is a residential apartment complex. For more details see the attached site plans, maps and PCN form. The proposed impacts are for fill for two road crossings (NWP29). Impact 1 is a culverted crossing. Impact 2 is an arch span but due to width and height of the incised stream footings cannot be constructed without impacting the stream channel. We have chosen to consider these to be permanent impacts underneath the span, only the temporary construction access at each end of the span is considered temporary. The arch span is required to avoid backwater on the adjacent upstream property. No rip rap is required at the arch span. An aerial sewer line is proposed that has no stream or wetland impacts and is deemed allowable by the buffer rules. Please contact me at (919) 270-7941 if you have any questions or require additional information. PROJECT SUMMARY Project Name The Pointe at Town Center Project Type Residential Apartments Owner / Applicant Triangle Town Center Holding, LLC County Wake Nearest Town Raleigh Waterbody Name UT to Perry Creek Basin Neuse Class C; NSW IMPACT SUMMARY Stream Impact (total ac): 0.03379 Perennial loss (USAGE mitigation if >0.02) 0.01779 intermittent loss 0 Perennial Temporary 0.0143 Intermittent Temporary 0 Perennial Rip Rap 0.0017 Intermittent Rip Rap 0 Wetland Impact (total acres): 0.021 Headwater Loss (2:1 mitigation USACE if over 0.1 ac 0.021 Headwater Conversion (1:1 mitigation USACE) 0 Headwater Temporary 0 Open Water Impact (acres): 0.0 Total Stream Impact (linear feet): 290 Perennial Temporary 50 Intermittent Temporary 0 Intermittent Rip Rap 0 Perennial Rip Rap 20 Perennial loss 220 Intermittent loss 0 Zone 1 Buffer 18,200 sgft Zone 2 Buffer 12,710 sgft Total Buffer (Zone 1 and 2) 30,910 sgft Attachments: (USAGE and DWR) Revised Pre -construction Notification (PCN) Application Form Revised Impact Exhibits (9 pages) Geotechnical Report Footing Correspondence