The URL can be used to link to this page

Home My WebLink About20180322 Ver 1_(Wood Site) - Memo & Figures_20180307 Pre‐Construction Notification Memorandum To: Andrew Williams – US Army Corps of Engineers Karen Higgins – North Carolina Division of Water Resources From: Ian Eckardt, PWS Date: March 6, 2018 Re: Pre‐Construction Notification Pursuant to Nationwide Permit No. 27 and Water Quality Certification No. 4087 Disaster Recovery Act Technical Services (DRATS) – Stream Repair Project (Wood Site) Lee County, North Carolina Wildlands Engineering, Inc. (Wildlands) is submitting a Pre‐Construction Notification (PCN) package for a proposed stream repair project that will involve fallen tree removal and channel enhancement to approximately 1,112 linear feet (LF) of Lick Creek. The project area is located immediately downstream of Lick Creek Road approximately four miles northeast of downtown Sanford, North Carolina in central Lee County on agricultural land owned by Chris Wood (Figures 1 ‐ 3). An Agent Authorization Form is attached which provides verification that Wildlands is acting on behalf of Mr. Wood. Project Overview The project work is primarily funded by the Disaster Recovery Act of 2016 to help communities and citizens recover from damage that resulted from Hurricane Matthew and wildfires. Heavy flooding from Hurricane Matthew resulted in numerous fallen trees and bank erosion throughout the portion of Lick Creek on the Wood property. The proposed work involves removing fallen trees, stream enhancement, and bank stabilization to approximately 1,112 LF of Lick Creek. Proposed stream enhancement will involve natural channel design techniques including the construction of in‐stream structures and reshaping of bed material to center flow within the channel. In‐stream structures will include angled log sills, boulder spur vanes, and log vanes to improve stream functionality and stability. Bank stabilization will be a combination of bank grading and engineered structures. Bank grading will involve laying back banks at a 3:1 ratio, seeding, matting, and planting with native riparian species. Additional bank stabilization will involve engineered structures including vegetated soil lifts, brush toe, and spot riprap toe protection. Jurisdictional Waters Potential jurisdictional waters of the U.S. were delineated within and immediately adjacent to the project area by Wildlands Engineering using the USACE Routine On‐Site Determination Method. This method is defined by the 1987 U.S. Army Corps of Engineers (USACE) Wetlands Delineation Manual and subsequent Eastern Mountain and Piedmont Regional Supplement. The only jurisdictional feature identified in the project area was Lick Creek which is classified as Water Supply (WS) IV waters by the North Carolina Department of Water Resources (NCDWR Index No. 18‐5‐(2)). Lick Creek has a drainage area of approximately eight square miles at the upstream extend of the project area and an average bankfull width of 20 LF. The channel exhibited continuous baseflow, frequent riffle/pool sequences, frequent deposition bars, and supported aquatic biota (including stoneflies & Asiatic clams) indicative of a perennial stream. Lick Creek received a score of 43.5 using the NCDWR Stream Identification Form (Version 4.11) supporting a perennial stream determination. No wetlands were observed within or immediately adjacent to the project area. Representative upland data points (DP 1 – 2) were taken during the delineation. One floodplain swale feature was observed in the left floodplain of Lick Creek at station 3+30 on the plan sheets. During the site visit the swale was dry and lacked hydric soil indicators. See Figure 4 for the location of delineated resources and data points. A NCDWR Stream Classification Form and USACE Wetland Determination Data Forms representative of non‐jurisdictional uplands are enclosed with this submittal. Soils Soil types within the proposed project area are mapped by the Natural Resource Conservation Service (NRCS) as Chewacla silt loam (Ch), Congaree silt loam (Cp), and Mayodan fine sandy loam (MfE) Enon sandy loam (EnD) and Monacan soils (MO). The Chewacla silt loam is classified a as somewhat poorly drained soil found on floodplains. The unit typically experiences frequent flooding put not ponding. The Congaree silt loam is classified as a moderately well‐drained soil commonly found on floodplains. The unit is listed as frequently experiencing flooding but not ponding. The Mayodan fine sandy loam is a well‐drained soil generally found on uplands including hillsides and Enon sandy loam is a well‐drained soil found on hillslopes. The unit typically doesn’t experience flooding or ponding. On‐site soils are mapped in Figure 5. Proposed Impacts The stream enhancement work will temporary impact 1,112 LF of Lick Creek (see Table 1 for impact summary). Enhancement activities include reshaping the channel bed, installing in‐stream structures for grade control and bank stability, bank grading/engineered structures, and planting native riparian species along the project area. Measures to avoid and/or minimize impacts to Lick Creek include avoiding relatively stable stream sections and limiting construction access only to the immediate project area. Impacted areas will be reseeded and/or replanted with riparian species. If necessary, a pump around system will be employed during stream construction. See Figure 6 for locations of stream impacts. Table 1: PCN Impact Summary Table Potential Jurisdictional Feature (Perennial/ Intermittent) Impact Type NWP Plan Sheet(s) Temporary Impacts (LF/AC) Permanent Impacts (LF/AC) Notes/Comments Lick Creek (P) Enhancement ‐ Stabilization 27 1.1 299 Lick Creek (P) Enhancement ‐ Stabilization 27 1.1 – 1.3 749 Lick Creek (P) Enhancement ‐ Stabilization 27 1.3 64 Total Temporary Impacts 1,112 LF Total Permanent Impacts The following supporting data is included with this submittal:  Vicinity, USGS Topographic, Parcel, Existing Conditions, Soils, and Impact Site Maps  photolog,  USACE Routine Wetland Determination Forms and NCDWR Stream Classification Form,  11” x 17” copy of the plan set. 03030003060080 03030004010010 03030003060050 03030004010020 0303000405003003030004050010 Hydrologic Unit Code (14 digit) Project Parcel Figure 1: Vicinity MapDisaster Recovery Act Technical Services (DRATS)Stream Repair Project - Wood Site Cape Fear River Basin 030300 4 Lee County, NC ¹0 1 Mile s 2017 Aeri al Photography Project Parcel Project Area Figure 2: Vicinity MapDisaster Recovery Act Technical Services (DRATS)Stream Repair Project - Wood Site Cape Fear River Basin 030300 4 Lee County, NC ¹0 1,000 Fee t Moncure, NC USGS 7.5' Topographic Quadrangle CHRISTOPHER S.WOOD9664-40-4577-00 Project Parcel Project Area Project Stream Figure 3: Parcel MapDisaster Recovery Act Technical Services (DRATS)Stream Repair Project - Wood Site Cape Fear River Basin 030300 4 Lee County, NC ¹0 400 Fee t 2017 Aeri al Photography !( !( ( ( ( ( ( ( ( ( ( DP1 DP2 1 2 3 4 7 9 8 5 6 Project Parcel Project Area Project Stream !(Data Points (Photolog Locations Figure 4: Site MapDisaster Recovery Act Technical Services (DRATS)Stream Repair Project - Wood Site Cape Fear River Basin 030300 4 Lee County, NC ¹0 200 Fee t 2017 Aeri al Photography LickCreek !( !( ( ( ( ( ( ( ( ( ( DP1 DP2 ToB Ch ToB MfE MfD MfD MfD MfB MfD Cp 1 2 3 4 7 9 8 5 6 Ch - Chewacla silt loam, 0-2% slopes Cp - Congaree silt loam , 0-2% slopes MfB - Mayodan fine sandy loam, 2-8% slopes MfD - Mayodan fine sandy loam, 8-15% slopes MfE - Mayodan fine sandy loam, 15-25% slopes ToB - Tillery fine sandy loam, 1-4% slopes Project Parcel Project Area Project Stream !(Data Points (Photolog Locations Figure 5: Soils MapDisaster Recovery Act Technical Services (DRATS)Stream Repair Project - Wood Site Cape Fear River Basin 030300 4 Lee County, NC ¹0 200 Fee t 2017 Aeri al Photography LickCreek Stream Impact (S1) Stream Impact (S2) Stream Impact (S3) Project Parcel Project Area Project Stream Proposed Stream Impacts Figure 6: Impact MapDisaster Recovery Act Technical Services (DRATS)Stream Repair Project - Wood Site Cape Fear River Basin 030300 4 Lee County, NC ¹0 200 Fee t 2017 Aeri al Photography LickCreek