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HomeMy WebLinkAbout20051950 Ver 2_More Info Received_20180801Strickland, Bev From: Jennifer Robertson <jrobertson@atlasenvi.com> Sent: Monday, July 23, 2018 11:27 AM To: Fuemmeler, Amanda J CIV (US) Cc: Price, Zan (George) Subject: [External] High Hickory Permit Modification Additional Information Package Corps Action ID 2017-00488 / DWR 05-1950 V2 Attachments: 0 Site Visit response.pdf, l.pdf, 2.pdf Amanda, Attached is the additional information you requested for the area around impact location 13. Please let me know if you have any additional questions about the permit modification request. I will call to discuss this week. Zan, Do you want to meet on site sometime for a compliance site visit? Thank you, Jennifer L Robertson, President ATLASEnvironmental, Inc. 712 English Tudor Lane Charlotte, NC 28211 (704) 512-1206 office (828) 712-9205 mobile www.atiasenvi.com Offices in Asheville and Charlotte 1010=410"R r11 IN , � • July 6, 2018 US Army Corps of Engineers Asheville Regulatory Field Office Attn: Mrs. Amanda Jones 151 Patton Avenue, Room 208 Asheville, North Carolina 28801-5006 Re: High Hickory Falls Subdivision —351.89 Acres 563-599 Patton Cove Road, Swannanoa, NC 28778 29/3 Permit Modification Request SAW -2017-00488, DWR# 05-1950 V2 Amanda: On July 6th 2018 Atlas Environmental staff conducted a site visit to determine if impacts had taken place at the stream end point upstream of the arched culvert, referenced as #13, on the impact map. Geospatial analysis has indicated that the stream layer on the impact map was skewed by approximately 38 feet to the West. This distance was measured by overlaying the AutoCAD map with winter/fall aerial imagery. Included with this response are two maps used to make the deremination showing overlays with the site plan and aerial imagery. The end point on the impact map also does not align with LiDAR or topographic layers. On the aerial imagery the tops of the culverts are clear and directly align with GPS points collected by Atlas. After consulting with the project engineer that we meet on site, John Kinnaird, he assures that they were well above the flag representing the endpoint that was field verified during the JD/permitting process in 2017. In addition to the GIS analysis Atlas compared photographs from the most recent site visit to the ones from delineation field work in 2016 and believes to have located the same trees. In both photographs a large tulip poplar is directly adjacent to a smaller tree that appears to be a birch. Despite the photos being taken from a different aspect the trees appear to be the same relative size and location in both photographs. In the 2018 photograph the tree is broken off and is a likely reason for not being able to locate the flagged end point. In addition there are few large tulip poplars in the vicinity of area #13 on the impact map. ATLAS Environmental, Inc. 712 English Tudor Lane Charlotte, North Carolina 28211 704-512-1206 (m) / 828-712-9205 (m) www.atlasenvi.com / Offices in Asheville and Charlotte We believe due to the current hydrology and evidence of long established flow combined with the geospatial analysis and vegetation comparisons that the stream has not been impacted by the constructed driveway. Best regards, Jennifer L Robertson ]Robertson@atlasenvi.com ATLAS Environmental, Inc. 712 English Tudor Lane Charlotte, North Carolina 28211 704-512-1206(m)/ 828-712-9205(m) www.atlasenvi.com / Offices in Asheville and Charlotte M7 g • End Point : July 06, 2018 End Point : August 16, 2016 ATLAS Environmental, Inc. 712 English Tudor Lane Charlotte, North Carolina 28211 704-512-1206(m)/ 828-712-9205(m) www.atlasenvi.com / Offices in Asheville and Charlotte VA Legend Contours 2 Ft Site Plan July 6, 2018 GPS points Boulders Culvert Drainage Road Edge Stream Toe of slope Impact Analysis of Area #13 i -el 0 50 100 150 200 ft Project Name: High Hickory Falls Location: 563-599 Patton Cove Road, Swannanoa, NC 28778 For: High Hickory of Asheville, LLC Attn: Mr. Andy Baker Coordinates: 35.57716, -82.39997 Date: July 06, 2018 I { 1`P' � ,;, syr •.�}4. Impact Analysis of Area #13 Z*t Legend July 6, 2018 GPS points Boulders F'qRW; A ■w �A5